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// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";

import {
    IAvKatMorphoFlashLoanableConfigFetcher
} from "../../../../../interfaces/positions/Looping/IAvKatMorphoFlashLoanableCommons.sol";

import { AvKatMorphoFlashLoanablePreviewUtils } from "./AvKatMorphoFlashLoanablePreviewUtils.sol";

contract AvKatMorphoFlashLoanableStrategy is
    IAvKatMorphoFlashLoanableConfigFetcher,
    AvKatMorphoFlashLoanablePreviewUtils
{
    constructor(LoopingStrategyConfig memory config, address positionManager) Ownable(msg.sender) {
        _initVersionedVaultStrategyStorage(positionManager);
        _setLoopingStrategyStorage(config);
    }

    function getLoopingFlashLoanableConfig() external view override returns (LoopingStrategyVersionedConfig memory) {
        LoopingStrategyConfig memory config = _getLoopingStrategyConfig();
        VaultStrategyStorage memory vaultStrategyConfig = _getVaultStrategyStorage();

        return
            LoopingStrategyVersionedConfig({ loopingStrategyConfig: config, vaultStrategyConfig: vaultStrategyConfig });
    }

    /// @dev This call will always be delegated
    function setConfig(address strategy) external override onlyDelegate {
        LoopingStrategyVersionedConfig memory config =
            IAvKatMorphoFlashLoanableConfigFetcher(strategy).getLoopingFlashLoanableConfig();

        _setVaultStrategyStorage(config.vaultStrategyConfig);
        _setLoopingStrategyStorage(config.loopingStrategyConfig);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { IERC4626 } from "@openzeppelin/contracts/interfaces/IERC4626.sol";

import { IAuthorizedSwapRouter } from "../IAuthorizedSwapRouter.sol";
import { IVersionedVaultUtils } from "../IVaultStrategy.sol";

import { IMorphoCommons } from "../BorrowLending/IMorphoCommons.sol";
import { ILoopingFlashLoanableCommons } from "./ILoopingFlashLoanableCommons.sol";

interface IAvKatMorphoFlashLoanableCommons {
    error InvalidSwapParams();

    struct LoopingStrategyStorage {
        IAuthorizedSwapRouter authorizedSwapRouter;
        IERC4626 avKatVault;
    }

    struct LoopingStrategyConfig {
        LoopingStrategyStorage loopingStrategyStorage;
        IMorphoCommons.MorphoStrategyConfig morphoStrategyConfig;
        ILoopingFlashLoanableCommons.LoopingFlashLoanableCommonStorage loopingFlashLoanableCommonStorage;
    }
}

interface IAvKatMorphoFlashLoanableConfigFetcher {
    struct LoopingStrategyVersionedConfig {
        IAvKatMorphoFlashLoanableCommons.LoopingStrategyConfig loopingStrategyConfig;
        IVersionedVaultUtils.VaultStrategyStorage vaultStrategyConfig;
    }

    function getLoopingFlashLoanableConfig() external view returns (LoopingStrategyVersionedConfig memory);
}

// SPDX-License-Identifier: GPL-3.0

pragma solidity 0.8.28;

import {
    StandardWithdrawEstimateResult,
    WithdrawAllEstimateResult
} from "../../../../../interfaces/positions/ILoopingInternals.sol";

import { AvKatMorphoFlashLoanableUtils } from "./AvKatMorphoFlashLoanableUtils.sol";

import { Constants } from "../../../../../positions/Constants.sol";

abstract contract AvKatMorphoFlashLoanablePreviewUtils is AvKatMorphoFlashLoanableUtils {
    function _previewStandardWithdraw(
        address user,
        uint256 shares
    )
        internal
        view
        override
        returns (StandardWithdrawEstimateResult memory result)
    {
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();

        if (_getLeverage(user) == Constants.WAD) {
            result.amountToBeSwapped = shares;
            result.totalSharesReceivedInPrimaryDepositToken = _previewSwapCollateralToPrimaryDepositToken(shares);
            result.deadline = block.timestamp + s.actionDeadline;

            return result;
        }

        uint256 totalBorrow = borrowBalance(user);
        uint256 totalCollateral = collateralBalance(user);

        PreviewStandardWithdrawCalculations memory calc;

        (calc.totalCollateralWithdrawn, calc.flashLoanAmount) =
            _calculateWithdrawalAmountByShares(shares, totalBorrow, totalCollateral);

        if (calc.totalCollateralWithdrawn > totalCollateral) revert MaxCollateralSharesExceeded();

        // Convert withdrawn collateral to primary deposit token
        calc.collateralWithdrawnInPrimaryDepositToken =
            _previewSwapCollateralToPrimaryDepositToken(calc.totalCollateralWithdrawn);

        // Remove buffer from primary deposit token withdrawn to account for potential slippage
        calc.collateralWithdrawnInPrimaryDepositTokenWithBuffer =
            _getSwapAmountWithBuffer(calc.collateralWithdrawnInPrimaryDepositToken);

        if (calc.collateralWithdrawnInPrimaryDepositTokenWithBuffer < calc.flashLoanAmount) {
            revert WithdrawalBalanceExceeded();
        }

        totalBorrow -= calc.flashLoanAmount;
        totalCollateral -= calc.totalCollateralWithdrawn;

        result.risk = _previewRiskInternal(Constants.WAD, totalCollateral, totalBorrow);

        result.totalSharesReceivedInPrimaryDepositToken =
            calc.collateralWithdrawnInPrimaryDepositTokenWithBuffer - calc.flashLoanAmount;

        result.collateralToBePulled = calc.totalCollateralWithdrawn;
        result.amountToBeSwapped = result.collateralToBePulled;
        result.flashLoanAmount = calc.flashLoanAmount;
        result.minAmountOut = calc.flashLoanAmount;
        result.deadline = block.timestamp + s.actionDeadline;
    }

    function _previewWithdrawAll(address user)
        internal
        view
        override
        returns (WithdrawAllEstimateResult memory result)
    {
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();
        uint256 actionDeadline = s.actionDeadline;

        uint256 totalBorrow = borrowBalance(user);
        uint256 totalCollateral = collateralBalance(user);

        // repay complete borrow using flash loan and then pull out collateral to repay the flash loan
        // assuming that flash loan amount is equivalent to total borrow balance
        PreviewWithdrawAllCalculations memory calc = PreviewWithdrawAllCalculations({
            collateralInPrimaryDepositToken: _previewSwapCollateralToPrimaryDepositToken(totalCollateral),
            collateralInPrimaryDepositTokenWithBuffer: 0,
            collateralInBorrowToken: 0
        });

        // Remove buffer from primary deposit token withdrawn to account for potential slippage
        calc.collateralInPrimaryDepositTokenWithBuffer = _getSwapAmountWithBuffer(calc.collateralInPrimaryDepositToken);

        if (calc.collateralInPrimaryDepositTokenWithBuffer < totalBorrow) revert InsufficientWithdrawalLiquidity();

        result.totalSharesReceivedInPrimaryDepositToken = calc.collateralInPrimaryDepositTokenWithBuffer - totalBorrow;
        result.amountToBeSwapped = totalCollateral;
        result.flashLoanAmount = _getFlashLoanAmountWithBuffer(totalBorrow);
        result.minAmountOut = totalBorrow;

        result.deadline = block.timestamp + actionDeadline;
        return result;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC4626.sol)

pragma solidity >=0.6.2;

import {IERC20} from "../token/ERC20/IERC20.sol";
import {IERC20Metadata} from "../token/ERC20/extensions/IERC20Metadata.sol";

/**
 * @dev Interface of the ERC-4626 "Tokenized Vault Standard", as defined in
 * https://eips.ethereum.org/EIPS/eip-4626[ERC-4626].
 */
interface IERC4626 is IERC20, IERC20Metadata {
    event Deposit(address indexed sender, address indexed owner, uint256 assets, uint256 shares);

    event Withdraw(
        address indexed sender,
        address indexed receiver,
        address indexed owner,
        uint256 assets,
        uint256 shares
    );

    /**
     * @dev Returns the address of the underlying token used for the Vault for accounting, depositing, and withdrawing.
     *
     * - MUST be an ERC-20 token contract.
     * - MUST NOT revert.
     */
    function asset() external view returns (address assetTokenAddress);

    /**
     * @dev Returns the total amount of the underlying asset that is “managed” by Vault.
     *
     * - SHOULD include any compounding that occurs from yield.
     * - MUST be inclusive of any fees that are charged against assets in the Vault.
     * - MUST NOT revert.
     */
    function totalAssets() external view returns (uint256 totalManagedAssets);

    /**
     * @dev Returns the amount of shares that the Vault would exchange for the amount of assets provided, in an ideal
     * scenario where all the conditions are met.
     *
     * - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
     * - MUST NOT show any variations depending on the caller.
     * - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
     * - MUST NOT revert.
     *
     * NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
     * “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
     * from.
     */
    function convertToShares(uint256 assets) external view returns (uint256 shares);

    /**
     * @dev Returns the amount of assets that the Vault would exchange for the amount of shares provided, in an ideal
     * scenario where all the conditions are met.
     *
     * - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
     * - MUST NOT show any variations depending on the caller.
     * - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
     * - MUST NOT revert.
     *
     * NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
     * “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
     * from.
     */
    function convertToAssets(uint256 shares) external view returns (uint256 assets);

    /**
     * @dev Returns the maximum amount of the underlying asset that can be deposited into the Vault for the receiver,
     * through a deposit call.
     *
     * - MUST return a limited value if receiver is subject to some deposit limit.
     * - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of assets that may be deposited.
     * - MUST NOT revert.
     */
    function maxDeposit(address receiver) external view returns (uint256 maxAssets);

    /**
     * @dev Allows an on-chain or off-chain user to simulate the effects of their deposit at the current block, given
     * current on-chain conditions.
     *
     * - MUST return as close to and no more than the exact amount of Vault shares that would be minted in a deposit
     *   call in the same transaction. I.e. deposit should return the same or more shares as previewDeposit if called
     *   in the same transaction.
     * - MUST NOT account for deposit limits like those returned from maxDeposit and should always act as though the
     *   deposit would be accepted, regardless if the user has enough tokens approved, etc.
     * - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
     * - MUST NOT revert.
     *
     * NOTE: any unfavorable discrepancy between convertToShares and previewDeposit SHOULD be considered slippage in
     * share price or some other type of condition, meaning the depositor will lose assets by depositing.
     */
    function previewDeposit(uint256 assets) external view returns (uint256 shares);

    /**
     * @dev Mints shares Vault shares to receiver by depositing exactly amount of underlying tokens.
     *
     * - MUST emit the Deposit event.
     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
     *   deposit execution, and are accounted for during deposit.
     * - MUST revert if all of assets cannot be deposited (due to deposit limit being reached, slippage, the user not
     *   approving enough underlying tokens to the Vault contract, etc).
     *
     * NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
     */
    function deposit(uint256 assets, address receiver) external returns (uint256 shares);

    /**
     * @dev Returns the maximum amount of the Vault shares that can be minted for the receiver, through a mint call.
     * - MUST return a limited value if receiver is subject to some mint limit.
     * - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of shares that may be minted.
     * - MUST NOT revert.
     */
    function maxMint(address receiver) external view returns (uint256 maxShares);

    /**
     * @dev Allows an on-chain or off-chain user to simulate the effects of their mint at the current block, given
     * current on-chain conditions.
     *
     * - MUST return as close to and no fewer than the exact amount of assets that would be deposited in a mint call
     *   in the same transaction. I.e. mint should return the same or fewer assets as previewMint if called in the
     *   same transaction.
     * - MUST NOT account for mint limits like those returned from maxMint and should always act as though the mint
     *   would be accepted, regardless if the user has enough tokens approved, etc.
     * - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
     * - MUST NOT revert.
     *
     * NOTE: any unfavorable discrepancy between convertToAssets and previewMint SHOULD be considered slippage in
     * share price or some other type of condition, meaning the depositor will lose assets by minting.
     */
    function previewMint(uint256 shares) external view returns (uint256 assets);

    /**
     * @dev Mints exactly shares Vault shares to receiver by depositing amount of underlying tokens.
     *
     * - MUST emit the Deposit event.
     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the mint
     *   execution, and are accounted for during mint.
     * - MUST revert if all of shares cannot be minted (due to deposit limit being reached, slippage, the user not
     *   approving enough underlying tokens to the Vault contract, etc).
     *
     * NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
     */
    function mint(uint256 shares, address receiver) external returns (uint256 assets);

    /**
     * @dev Returns the maximum amount of the underlying asset that can be withdrawn from the owner balance in the
     * Vault, through a withdraw call.
     *
     * - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
     * - MUST NOT revert.
     */
    function maxWithdraw(address owner) external view returns (uint256 maxAssets);

    /**
     * @dev Allows an on-chain or off-chain user to simulate the effects of their withdrawal at the current block,
     * given current on-chain conditions.
     *
     * - MUST return as close to and no fewer than the exact amount of Vault shares that would be burned in a withdraw
     *   call in the same transaction. I.e. withdraw should return the same or fewer shares as previewWithdraw if
     *   called
     *   in the same transaction.
     * - MUST NOT account for withdrawal limits like those returned from maxWithdraw and should always act as though
     *   the withdrawal would be accepted, regardless if the user has enough shares, etc.
     * - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
     * - MUST NOT revert.
     *
     * NOTE: any unfavorable discrepancy between convertToShares and previewWithdraw SHOULD be considered slippage in
     * share price or some other type of condition, meaning the depositor will lose assets by depositing.
     */
    function previewWithdraw(uint256 assets) external view returns (uint256 shares);

    /**
     * @dev Burns shares from owner and sends exactly assets of underlying tokens to receiver.
     *
     * - MUST emit the Withdraw event.
     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
     *   withdraw execution, and are accounted for during withdraw.
     * - MUST revert if all of assets cannot be withdrawn (due to withdrawal limit being reached, slippage, the owner
     *   not having enough shares, etc).
     *
     * Note that some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
     * Those methods should be performed separately.
     */
    function withdraw(uint256 assets, address receiver, address owner) external returns (uint256 shares);

    /**
     * @dev Returns the maximum amount of Vault shares that can be redeemed from the owner balance in the Vault,
     * through a redeem call.
     *
     * - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
     * - MUST return balanceOf(owner) if owner is not subject to any withdrawal limit or timelock.
     * - MUST NOT revert.
     */
    function maxRedeem(address owner) external view returns (uint256 maxShares);

    /**
     * @dev Allows an on-chain or off-chain user to simulate the effects of their redemption at the current block,
     * given current on-chain conditions.
     *
     * - MUST return as close to and no more than the exact amount of assets that would be withdrawn in a redeem call
     *   in the same transaction. I.e. redeem should return the same or more assets as previewRedeem if called in the
     *   same transaction.
     * - MUST NOT account for redemption limits like those returned from maxRedeem and should always act as though the
     *   redemption would be accepted, regardless if the user has enough shares, etc.
     * - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
     * - MUST NOT revert.
     *
     * NOTE: any unfavorable discrepancy between convertToAssets and previewRedeem SHOULD be considered slippage in
     * share price or some other type of condition, meaning the depositor will lose assets by redeeming.
     */
    function previewRedeem(uint256 shares) external view returns (uint256 assets);

    /**
     * @dev Burns exactly shares from owner and sends assets of underlying tokens to receiver.
     *
     * - MUST emit the Withdraw event.
     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
     *   redeem execution, and are accounted for during redeem.
     * - MUST revert if all of shares cannot be redeemed (due to withdrawal limit being reached, slippage, the owner
     *   not having enough shares, etc).
     *
     * NOTE: some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
     * Those methods should be performed separately.
     */
    function redeem(uint256 shares, address receiver, address owner) external returns (uint256 assets);
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

// @notice This interface is used to calldata from external SDKs
// verify the signature and execute the swap with the verified calldata
interface IAuthorizedSwapRouter {
    struct AuthorizedSwapConfig {
        address authority;
        address router;
    }

    struct SwapNonces {
        mapping(address => uint256) nonces;
    }

    struct SwapAuth {
        address router;
        address tokenIn;
        address tokenOut;
        uint256 amountIn;
        uint256 minAmountOut;
        bytes32 routeCalldataHash;
        uint256 deadline;
        uint256 nonce;
    }

    error Expired();
    error CallFailed(string reason);
    error InvalidSig();
    error SlippageExceeded();
    error NonceMismatch();
    error CalldataMismatch();
    error RouterMismatch();

    function executeAuthorizedSwap(
        SwapAuth calldata auth,
        bytes calldata sig,
        bytes calldata swapCallData
    )
        external
        returns (uint256);
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { IStrategyManager } from "./IStrategyManager.sol";
import { IVaultManager } from "./IVaultManager.sol";

interface IVaultStrategy {
    // errors
    error InvalidToken(address token);
    error InvalidUserConfig();
    error StrategyLoopingNotEnabled();
    error InvalidTransactionCode(uint256 code);

    // read-only functions
    function version() external view returns (uint256);

    function risk(address user, uint256 baseValue) external view returns (uint256);

    function balance(address user) external view returns (uint256);
    function balanceInUSD(address user) external view returns (uint256);
    function balanceInDepositToken(address user) external view returns (uint256);
    function balanceInWithdrawalToken(address user) external view returns (uint256);

    function validatePreDeposit(
        address user,
        uint64 transactionCode,
        address _tokenAddress,
        uint256 _value,
        IStrategyManager.StrategyConfig calldata strategyConfig,
        IVaultManager.VaultStrategyConfig calldata userConfig,
        bytes calldata _extras
    )
        external
        view;

    // write-only functions

    /// @dev This call will always be delegated
    /// @notice Called by vault to copy the strategy config to vault storage slot
    function setConfig(address strategy) external;

    // @dev this call will always be delegated
    function deposit(
        address user,
        uint64 transactionCode,
        address _tokenAddress,
        uint256 _value,
        IStrategyManager.StrategyConfig calldata strategyConfig,
        IVaultManager.VaultStrategyConfig calldata userConfig,
        bytes calldata _extras
    )
        external
        payable;

    // @dev this call will always be delegated
    function withdraw(
        address user,
        uint64 transactionCode,
        address _tokenAddress,
        uint256 _value,
        IStrategyManager.StrategyConfig calldata strategyConfig,
        IVaultManager.VaultStrategyConfig calldata userConfig,
        bytes calldata _extras
    )
        external
        payable;
}

interface IVersionedVaultUtils {
    struct VaultStrategyStorage {
        uint256 version;
        address positionManager;
    }

    struct CallerInfoStorage {
        address self;
    }

    function getConfig() external view returns (VaultStrategyStorage memory);
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { IMorpho, MarketParams } from "@morpho-blue/src/interfaces/IMorpho.sol";

import { IVersionedVaultUtils } from "../IVaultStrategy.sol";
import { IBorrowLendingUtils } from "./IBorrowLendingUtils.sol";

interface IMorphoCommons {
    struct MorphoCommonsStorage {
        MarketParams marketParams;
        IMorpho morpho;
    }

    struct MorphoStrategyConfig {
        MorphoCommonsStorage morphoCommons;
        address priceFeed;
    }

    struct MorphoRepayParams {
        IMorpho morpho;
        MarketParams marketParams;
        address borrowToken;
    }
}

interface IMorphoConfigFetcher {
    struct MorphoStrategyVersionedConfig {
        IMorphoCommons.MorphoStrategyConfig morphoStrategyConfig;
        IVersionedVaultUtils.VaultStrategyStorage vaultStrategyConfig;
    }

    function getMorphoCommonsConfig() external view returns (MorphoStrategyVersionedConfig memory);
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { ILoopingUtil } from "../ILoopingUtil.sol";
import { IPriceFeed } from "../../shared/IPriceFeed.sol";

abstract contract ILoopingFlashLoanableCommons {
    event InitialDeposit(
        address user,
        uint256 leverageInWAD,
        address _tokenAddress,
        uint256 value,
        address _collateralAddress,
        uint256 preDepositCollateral,
        uint256 collateralAdded,
        address _borrowAddress,
        uint256 preDepositBorrow,
        uint256 amountBorrowed
    );

    event StandardDeposit(
        address user,
        address _tokenAddress,
        uint256 value,
        address _collateralAddress,
        uint256 preDepositCollateral,
        uint256 collateralAdded,
        address _borrowAddress,
        uint256 preDepositBorrow,
        uint256 amountBorrowed
    );

    event StandardWithdraw(
        address user,
        address _tokenAddress,
        uint256 value,
        address _collateralAddress,
        uint256 preWithdrawCollateral,
        address _borrowAddress,
        uint256 preWithdrawBorrow,
        uint256 sharesReceivedInBorrowToken,
        address _primaryDepositTokenAddress,
        uint256 sharesReceivedInPrimaryDepositToken
    );

    event WithdrawAll(
        address user,
        address _tokenAddress,
        uint256 value,
        address _collateralAddress,
        uint256 preWithdrawCollateral,
        address _borrowAddress,
        uint256 preWithdrawBorrow,
        uint256 sharesReceivedInBorrowToken,
        address _primaryDepositTokenAddress,
        uint256 sharesReceivedInPrimaryDepositToken
    );

    error DeadlineExceeded();
    error SlippageExceeded();
    error LeverageOutOfBounds();
    error InitialDepositAlreadyMade();
    error WithdrawalBalanceExceeded();
    error MaxCollateralSharesExceeded();
    error InsufficientWithdrawalLiquidity();

    struct DepositParams {
        address user;
        address _tokenAddress;
        uint256 _value;
        uint256 _flashLoanAmount;
        uint256 _leastCollateralSharesAfterSlippage;
        bool isInitial;
    }

    struct DepositResult {
        uint256 leverageInWAD;
        uint256 collateralAdded;
        uint256 amountBorrowed;
    }

    struct LoopingFlashLoanableCommonStorage {
        /// @notice buffer to be applied to the amount to be swapped
        uint256 amountToBeSwappedBufferInWAD;
        /// @notice buffer added to the flash loan amount to ensure that the flash loan amount is sufficient to withdraw
        /// all
        uint256 withdrawAllBufferInWAD;
        uint256 actionDeadline;
        uint256 maxLeverage;
        address primaryDepositToken;
        ILoopingUtil loopingUtil;
        IPriceFeed priceFeed;
        address flashLoanCaller;
    }

    struct StandardWithdrawCoreParams {
        address borrowToken;
        address collateralToken;
        address primaryDepositToken;
        ILoopingUtil loopingUtil;
    }

    struct WithdrawAllCoreParams {
        address borrowToken;
        address collateralToken;
        address primaryDepositToken;
        ILoopingUtil loopingUtil;
    }

    struct WithdrawResult {
        uint256 sharesReceivedInPrimaryDepositToken;
        uint256 sharesReceivedInBorrowToken;
    }

    struct PreviewDepositCoreParams {
        IPriceFeed priceFeed;
        uint256 maxLeverage;
        uint256 actionDeadline;
        address borrowToken;
    }

    struct PreviewDepositCalculations {
        uint256 valueInBorrowToken;
        uint256 flashLoanAmount;
        uint256 collateralSharesOnDeposit;
        uint256 collateralSharesOnFlashLoan;
        uint256 totalCollateralAdded;
    }

    struct DepositCoreParams {
        address borrowToken;
        address collateralToken;
        ILoopingUtil loopingUtil;
    }

    struct StandardDepositBalances {
        uint256 preDepositCollateral;
        uint256 preDepositBorrow;
    }

    struct FlashLoanDepositCalculations {
        uint256 primaryDepositTokenShares;
        uint256 collateralShares;
        uint256 initialShares;
    }

    struct PreviewStandardWithdrawCalculations {
        uint256 totalCollateralWithdrawn;
        uint256 flashLoanAmount;
        uint256 collateralWithdrawnInPrimaryDepositToken;
        uint256 collateralWithdrawnInPrimaryDepositTokenWithBuffer;
        uint256 collateralWithdrawnInBorrowToken;
    }

    struct PreviewWithdrawAllCalculations {
        uint256 collateralInPrimaryDepositToken;
        uint256 collateralInPrimaryDepositTokenWithBuffer;
        uint256 collateralInBorrowToken;
    }

    struct BalanceInUSDParams {
        IPriceFeed priceFeed;
        address collateralToken;
    }

    struct FlashLoanCallerParams {
        address borrowToken;
        address flashLoanCaller;
    }

    struct WithdrawalAmountCalculations {
        uint256 sharesInBorrowToken;
        uint256 totalCollateralInBorrowToken;
        uint256 adjustedRiskRatio;
    }

    function _previewDepositToCollateral(
        address tokenAddress,
        uint256 depositAmount
    )
        internal
        view
        virtual
        returns (uint256);

    function _previewSwapCollateralToBorrow(uint256 shares) internal view virtual returns (uint256);

    function _previewSwapPrimaryDepositTokenToBorrow(uint256 shares) internal view virtual returns (uint256);

    function _previewSwapCollateralToPrimaryDepositToken(uint256 shares) internal view virtual returns (uint256);

    function _previewSwapBorrowToCollateral(uint256 shares) internal view virtual returns (uint256);

    function _swapDepositToCollateral(
        address user,
        address tokenAddress,
        uint256 depositAmount,
        uint256 minShares
    )
        internal
        virtual
        returns (uint256);

    function _swapBorrowToPrimaryDepositToken(
        address user,
        uint256 shares,
        uint256 minShares,
        bytes memory swapCalldata
    )
        internal
        virtual
        returns (uint256);

    function _swapCollateralToBorrow(
        address user,
        uint256 shares,
        uint256 minShares,
        bytes memory swapCalldata
    )
        internal
        virtual
        returns (uint256);

    function _swapCollateralToPrimaryDepositToken(
        address user,
        uint256 shares,
        uint256 minShares,
        bytes memory swapCalldata
    )
        internal
        virtual
        returns (uint256);
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

struct DepositActionParams {
    uint256 deadline;
    uint256 flashLoanAmount;
    uint256 minCollateralSharesAfterSlippage;
}

struct WithdrawActionParams {
    uint256 deadline;
    uint256 flashLoanAmount;
    uint256 collateralToBePulled;
    uint256 minSharesReceivedInPrimaryDepositToken;
    uint256 minSharesReceivedInBorrowToken;
}

/// @dev Preview deposit estimate
struct InitialDepositEstimateResult {
    uint256 totalCollateral;
    uint256 estimatedLeverage;
    uint256 risk;
    uint256 flashLoanAmount;
    uint256 amountToBeSwapped;
    uint256 lendingThreshold;
    uint256 deadline;
    uint64 iteration;
}

/// @dev Preview Standard deposit estimate
struct StandardDepositEstimateResult {
    uint256 totalCollateralBought;
    uint256 flashLoanAmount;
    uint256 amountToBeSwapped;
    uint256 deadline;
    uint256 risk;
}

/// @dev Preview Standard withdraw estimate
struct StandardWithdrawEstimateResult {
    uint256 totalSharesReceivedInPrimaryDepositToken;
    uint256 totalSharesReceivedInBorrowToken;
    uint256 flashLoanAmount;
    uint256 amountToBeSwapped;
    uint256 collateralToBePulled;
    uint256 minAmountOut;
    uint256 deadline;
    uint256 risk;
}

/// @dev Preview Withdraw All estimate
struct WithdrawAllEstimateResult {
    uint256 totalSharesReceivedInPrimaryDepositToken;
    uint256 totalSharesReceivedInBorrowToken;
    uint256 flashLoanAmount;
    uint256 amountToBeSwapped;
    uint256 minAmountOut;
    uint256 deadline;
}

/// @dev Values post simulation for a given lending threshold
struct LoopedDepositPreviewResult {
    uint256 totalCollateral;
    uint256 totalBorrow;
    uint256 lendingThreshold;
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { MarketParams } from "@morpho-blue/src/interfaces/IMorpho.sol";

import { Math } from "@openzeppelin/contracts/utils/math/Math.sol";
import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { IERC4626 } from "@openzeppelin/contracts/interfaces/IERC4626.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import { IPriceFeed } from "../../../../../interfaces/shared/IPriceFeed.sol";
import { IAuthorizedSwapRouter } from "../../../../../interfaces/positions/IAuthorizedSwapRouter.sol";
import { IBorrowLendingUtils } from "../../../../../interfaces/positions/BorrowLending/IBorrowLendingUtils.sol";

import { DepositActionParams } from "../../../../../interfaces/positions/ILoopingInternals.sol";

import {
    IAvKatMorphoFlashLoanableCommons
} from "../../../../../interfaces/positions/Looping/IAvKatMorphoFlashLoanableCommons.sol";

import { BaseMorphoUtils } from "../../../base/BorrowLending/Morpho/BaseMorphoUtils.sol";

import {
    BaseLoopingFlashLoanableCommon
} from "../../../base/Looping/LoopingFlashLoanable/BaseLoopingFlashLoanableCommon.sol";
import {
    BaseLoopingFlashLoanableStrategy
} from "../../../base/Looping/LoopingFlashLoanable/BaseLoopingFlashLoanableStrategy.sol";

import { ZeroAddress } from "../../../../../utils/Helpers.sol";

abstract contract AvKatMorphoFlashLoanableUtils is
    IAvKatMorphoFlashLoanableCommons,
    BaseLoopingFlashLoanableStrategy,
    BaseMorphoUtils
{
    bytes32 constant LOOPING_STRATEGY_STORAGE_POSITION = keccak256("looping.strategy.storage")
        & ~bytes32(uint256(0xff));

    function _previewDepositToCollateral(
        address tokenAddress,
        uint256 depositAmount
    )
        internal
        view
        override
        returns (uint256)
    {
        LoopingStrategyStorage storage l = _getLoopingStrategyStorage();

        if (tokenAddress == address(l.avKatVault)) {
            return depositAmount;
        }
        if (tokenAddress == l.avKatVault.asset()) {
            return l.avKatVault.previewDeposit(depositAmount);
        }
        revert InvalidToken(tokenAddress);
    }

    function _previewSwapBorrowToCollateral(uint256 assets) internal view override returns (uint256) {
        LoopingStrategyStorage storage s = _getLoopingStrategyStorage();
        return s.avKatVault.previewDeposit(assets);
    }

    function _previewSwapCollateralToPrimaryDepositToken(uint256 shares) internal view override returns (uint256) {
        return _previewSwapCollateralToBorrow(shares);
    }

    function _previewSwapCollateralToBorrow(uint256 shares) internal view override returns (uint256) {
        LoopingStrategyStorage storage s = _getLoopingStrategyStorage();
        return s.avKatVault.previewRedeem(shares);
    }

    /// @dev Convert Primary Deposit Token To Borrow Token Using Spot Price
    function _previewSwapPrimaryDepositTokenToBorrow(uint256 shares) internal pure override returns (uint256) {
        return shares;
    }

    function previewAvKatVaultDeposit(address _tokenAddress, uint256 _value) external view returns (uint256) {
        return _previewDepositToCollateral(_tokenAddress, _value);
    }

    /// @dev balance in underlying
    function balance(address user) external view override returns (uint256) {
        LoopingFlashLoanableCommonStorage storage l = _getLoopingFlashLoanableCommonStorage();
        BorrowLendingUtilStorage storage b = _getBorrowLendingStorage();

        return
            b.priceFeed.convertTokenBalance(b.collateralToken, l.primaryDepositToken, _balanceInCollateralToken(user));
    }

    /// @dev balance in underlying
    function balanceInDepositToken(address user) external view override returns (uint256) {
        LoopingFlashLoanableCommonStorage storage l = _getLoopingFlashLoanableCommonStorage();
        BorrowLendingUtilStorage storage b = _getBorrowLendingStorage();

        return
            b.priceFeed.convertTokenBalance(b.collateralToken, l.primaryDepositToken, _balanceInCollateralToken(user));
    }

    function _validateInputForDeposit(
        address _tokenAddress,
        DepositActionParams memory actionParams
    )
        internal
        view
        override
    {
        LoopingStrategyStorage storage s = _getLoopingStrategyStorage();

        if (_tokenAddress != address(s.avKatVault) && _tokenAddress != s.avKatVault.asset()) {
            revert InvalidToken(_tokenAddress);
        }
        super._validateInputForDeposit(_tokenAddress, actionParams);
    }

    function _swapDepositToCollateral(
        address user,
        address tokenAddress,
        uint256 depositAmount,
        uint256 /*minShares*/
    )
        internal
        override
        returns (uint256)
    {
        LoopingStrategyStorage storage s = _getLoopingStrategyStorage();

        if (tokenAddress == s.avKatVault.asset()) {
            SafeERC20.forceApprove(IERC20(tokenAddress), address(s.avKatVault), depositAmount);
            return s.avKatVault.deposit(depositAmount, user);
        } else if (tokenAddress == address(s.avKatVault)) {
            return depositAmount;
        }

        revert InvalidToken(tokenAddress);
    }

    function _swapCollateralToPrimaryDepositToken(
        address user,
        uint256 shares,
        uint256 minShares,
        bytes memory swapCalldata
    )
        internal
        override
        returns (uint256)
    {
        return _swapCollateralToBorrow(user, shares, minShares, swapCalldata);
    }

    function _swapBorrowToPrimaryDepositToken(
        address, /*user*/
        uint256 shares,
        uint256, /*minShares*/
        bytes memory /*swapCalldata*/
    )
        internal
        pure
        override
        returns (uint256)
    {
        return shares;
    }

    function _swapCollateralToBorrow(
        address, /*user*/
        uint256 shares,
        uint256 minShares,
        bytes memory swapCalldata
    )
        internal
        override
        returns (uint256)
    {
        if (shares == 0) return 0;

        LoopingStrategyStorage storage s = _getLoopingStrategyStorage();
        IAuthorizedSwapRouter authorizedSwapRouter = s.authorizedSwapRouter;

        (IAuthorizedSwapRouter.SwapAuth memory auth, bytes memory sig, bytes memory callData) =
            _decodeSwapCalldata(swapCalldata);
        _validateCalldataForCollateralToBorrowSwap(auth, minShares);

        SafeERC20.forceApprove(IERC20(s.avKatVault), address(authorizedSwapRouter), shares);
        return authorizedSwapRouter.executeAuthorizedSwap(auth, sig, callData);
    }

    function _decodeSwapCalldata(bytes memory swapCalldata)
        private
        pure
        returns (IAuthorizedSwapRouter.SwapAuth memory, bytes memory, bytes memory)
    {
        return abi.decode(swapCalldata, (IAuthorizedSwapRouter.SwapAuth, bytes, bytes));
    }

    function _validateCalldataForCollateralToBorrowSwap(
        IAuthorizedSwapRouter.SwapAuth memory auth,
        uint256 minOutShares
    )
        private
        view
    {
        LoopingStrategyStorage storage s = _getLoopingStrategyStorage();

        if (auth.tokenIn != address(s.avKatVault)) revert InvalidSwapParams();
        if (auth.tokenOut != s.avKatVault.asset()) revert InvalidSwapParams();
        if (auth.minAmountOut < minOutShares) revert InvalidSwapParams();
    }

    function _setLoopingStrategyStorage(LoopingStrategyConfig memory config) internal {
        _setMorphoCommonsStorage(config.morphoStrategyConfig);
        _setLoopingFlashLoanableCommonStorage(config.loopingFlashLoanableCommonStorage);

        LoopingStrategyStorage storage s = _getLoopingStrategyStorage();
        s.authorizedSwapRouter = config.loopingStrategyStorage.authorizedSwapRouter;
        s.avKatVault = config.loopingStrategyStorage.avKatVault;
    }

    function _getLoopingStrategyConfig() internal view returns (LoopingStrategyConfig memory) {
        MorphoStrategyConfig memory morphoStrategyConfig = _getMorphoCommonsConfig();
        LoopingStrategyStorage memory loopingStrategyStorage = _getLoopingStrategyStorage();
        LoopingFlashLoanableCommonStorage memory loopingFlashLoanableCommonStorage =
            _getLoopingFlashLoanableCommonStorage();

        return LoopingStrategyConfig({
            loopingStrategyStorage: loopingStrategyStorage,
            loopingFlashLoanableCommonStorage: loopingFlashLoanableCommonStorage,
            morphoStrategyConfig: morphoStrategyConfig
        });
    }

    function _getLoopingStrategyStorage() internal pure returns (LoopingStrategyStorage storage s) {
        bytes32 slot = LOOPING_STRATEGY_STORAGE_POSITION;
        assembly {
            s.slot := slot
        }
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

library Constants {
    uint64 internal constant TRANSACTION_CODE_STANDARD_DEPOSIT = 1001; // Deposit for Permissionless Strategy
    uint64 internal constant TRANSACTION_CODE_LEVERAGED_DEPOSIT = 1002; // Deposit for Looping Borrow-Lending Strategy
    uint64 internal constant TRANSACTION_CODE_REPAY = 1003; // Deposit for Borrow-Lending Repay Strategy
    uint64 internal constant TRANSACTION_CODE_INITIAL_DEPOSIT = 1004; // Deposit at time of initial position creation

    uint64 internal constant TRANSACTION_CODE_STANDARD_WITHDRAW = 2001; // Withdrawal for Permissionless Strategy
    uint64 internal constant TRANSACTION_CODE_WITHDRAW_ALL = 2010; // Withdrawal all the assets (used to close
    // positions)
    uint64 internal constant TRANSACTION_CODE_WITHDRAW_BORROW = 2002; // Withdrawal for Borrow Lending Borrowed Token

    // Deposit user's asset in flash loan callback
    uint64 internal constant TRANSACTION_CODE_FLASH_LOAN_DEPOSIT = 3001;
    // Withdraw user's asset in flash loan callback
    uint64 internal constant TRANSACTION_CODE_FLASH_LOAN_WITHDRAW = 3002;
    // Withdraw All user's asset in flash loan callback
    uint64 internal constant TRANSACTION_CODE_FLASH_LOAN_WITHDRAW_ALL = 3003;

    uint256 constant DOLLAR_BALANCE_PRECISION = 18;
    uint256 constant WEI_DECIMALS = 18;
    uint256 constant WAD = 1e18;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity >=0.6.2;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC-20 standard.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

interface IStrategyManager {
    struct StrategyConfig {
        address underlying;
        address primaryDepositToken; // useful in case of swapping token to primary token for deposits
        address primaryWithdrawalToken; // useful in case of swapping token to primary token for withdrawals
        bool depositEnabled;
        bool loopingEnabled;
    }

    // event
    event StrategyAdded(
        address strategyAddress,
        address primaryDepositToken,
        address primaryWithdrawalToken,
        address underlying,
        bool loopingEnabled
    );
    event StrategyRemoved(address strategyAddress);

    event StrategyDepositFlagUpdated(address strategyAddress, bool flag);
    event StrategyTransactionCodeUpdated(address strategyAddress, uint64 transactionCode, bool flag);
    event StrategyTokenWhitelistingUpdated(address strategyAddress, address tokenAddress, uint64 purpose, bool flag);

    // error
    error InvalidStrategy();
    error StrategyAlreadyExist(address strategy);
    error StrategyDoesNotExist(address strategy);
    error StrategyTokenNotWhitelisted(address strategy, address token, uint64 purpose);

    // read-only function
    function isDepositEnabled(address strategyAddress) external view returns (bool);
    function getStrategyConfig(address strategyAddress) external view returns (StrategyConfig memory);
    function assertStrategyExists(address strategyAddress) external view;
    function isTransactionCodeWhitelisted(address strategyAddress, uint64 transactionCode) external view returns (bool);
    function assertStrategyTokenWhitelisted(
        address strategyAddress,
        address tokenAddress,
        uint64 purpose
    )
        external
        view;

    // write-only functions
    function addStrategy(
        address strategyAddress,
        address primaryDepositToken,
        address primaryWithdrawalToken,
        address underlying,
        bool loopingEnabled
    )
        external;
    function removeStrategy(address strategyAddress) external;
    function upsertDepositEnabled(address strategyAddress, bool flag) external;
    function upsertTransactionCode(address strategyAddress, uint64 transactionCode, bool flag) external;
    function updateTokenWhitelisting(address strategyAddress, address tokenAddress, uint64 purpose, bool flag) external;
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

interface IVaultManager {
    struct VaultStrategyConfig {
        address user;
        address strategy;
        uint64 iteration;
        uint256 lendingThreshold;
        bool depositEnabled;
    }

    // event
    event VaultGlobalDepositFlagUpdated(address sender, bool flag);
    event VaultDepositFlagUpdated(address vault, address sender, bool flag);

    event VaultRegistered(address user, address vault, address strategy, uint256 lendingThreshold, uint64 iteration);

    event VaultRegistryUpdated(address sender, address vaultRegistry);
    event PositionManagerUpdated(address sender, address positionManager);
    event MorphoBlueCallerUpdated(address sender, address morphoBlueCaller);

    // errors
    error InvalidStrategyMapping();
    error VaultNotRegistered();

    // read-only functions
    function assertValidStrategy(address vault, address strategy) external view;
    function getStrategyManager() external view returns (address);
    function getPositionManager() external view returns (address);
    function getVaultStrategyConfig(address vault) external view returns (VaultStrategyConfig memory);
    function getDepositEnabled(address vault) external view returns (bool);
    function getMorphoBlueCaller() external view returns (address);

    // write-only functions
    function upsertGlobalDepositFlag(bool flag) external;
    function registerVault(
        address user,
        address vault,
        address strategy,
        uint256 lendingThreshold,
        uint64 iteration
    )
        external;
    function upsertDepositEnabled(address vault, bool flag) external;
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

type Id is bytes32;

struct MarketParams {
    address loanToken;
    address collateralToken;
    address oracle;
    address irm;
    uint256 lltv;
}

/// @dev Warning: For `feeRecipient`, `supplyShares` does not contain the accrued shares since the last interest
/// accrual.
struct Position {
    uint256 supplyShares;
    uint128 borrowShares;
    uint128 collateral;
}

/// @dev Warning: `totalSupplyAssets` does not contain the accrued interest since the last interest accrual.
/// @dev Warning: `totalBorrowAssets` does not contain the accrued interest since the last interest accrual.
/// @dev Warning: `totalSupplyShares` does not contain the additional shares accrued by `feeRecipient` since the last
/// interest accrual.
struct Market {
    uint128 totalSupplyAssets;
    uint128 totalSupplyShares;
    uint128 totalBorrowAssets;
    uint128 totalBorrowShares;
    uint128 lastUpdate;
    uint128 fee;
}

struct Authorization {
    address authorizer;
    address authorized;
    bool isAuthorized;
    uint256 nonce;
    uint256 deadline;
}

struct Signature {
    uint8 v;
    bytes32 r;
    bytes32 s;
}

/// @dev This interface is used for factorizing IMorphoStaticTyping and IMorpho.
/// @dev Consider using the IMorpho interface instead of this one.
interface IMorphoBase {
    /// @notice The EIP-712 domain separator.
    /// @dev Warning: Every EIP-712 signed message based on this domain separator can be reused on chains sharing the
    /// same chain id and on forks because the domain separator would be the same.
    function DOMAIN_SEPARATOR() external view returns (bytes32);

    /// @notice The owner of the contract.
    /// @dev It has the power to change the owner.
    /// @dev It has the power to set fees on markets and set the fee recipient.
    /// @dev It has the power to enable but not disable IRMs and LLTVs.
    function owner() external view returns (address);

    /// @notice The fee recipient of all markets.
    /// @dev The recipient receives the fees of a given market through a supply position on that market.
    function feeRecipient() external view returns (address);

    /// @notice Whether the `irm` is enabled.
    function isIrmEnabled(address irm) external view returns (bool);

    /// @notice Whether the `lltv` is enabled.
    function isLltvEnabled(uint256 lltv) external view returns (bool);

    /// @notice Whether `authorized` is authorized to modify `authorizer`'s position on all markets.
    /// @dev Anyone is authorized to modify their own positions, regardless of this variable.
    function isAuthorized(address authorizer, address authorized) external view returns (bool);

    /// @notice The `authorizer`'s current nonce. Used to prevent replay attacks with EIP-712 signatures.
    function nonce(address authorizer) external view returns (uint256);

    /// @notice Sets `newOwner` as `owner` of the contract.
    /// @dev Warning: No two-step transfer ownership.
    /// @dev Warning: The owner can be set to the zero address.
    function setOwner(address newOwner) external;

    /// @notice Enables `irm` as a possible IRM for market creation.
    /// @dev Warning: It is not possible to disable an IRM.
    function enableIrm(address irm) external;

    /// @notice Enables `lltv` as a possible LLTV for market creation.
    /// @dev Warning: It is not possible to disable a LLTV.
    function enableLltv(uint256 lltv) external;

    /// @notice Sets the `newFee` for the given market `marketParams`.
    /// @param newFee The new fee, scaled by WAD.
    /// @dev Warning: The recipient can be the zero address.
    function setFee(MarketParams memory marketParams, uint256 newFee) external;

    /// @notice Sets `newFeeRecipient` as `feeRecipient` of the fee.
    /// @dev Warning: If the fee recipient is set to the zero address, fees will accrue there and will be lost.
    /// @dev Modifying the fee recipient will allow the new recipient to claim any pending fees not yet accrued. To
    /// ensure that the current recipient receives all due fees, accrue interest manually prior to making any changes.
    function setFeeRecipient(address newFeeRecipient) external;

    /// @notice Creates the market `marketParams`.
    /// @dev Here is the list of assumptions on the market's dependencies (tokens, IRM and oracle) that guarantees
    /// Morpho behaves as expected:
    /// - The token should be ERC-20 compliant, except that it can omit return values on `transfer` and `transferFrom`.
    /// - The token balance of Morpho should only decrease on `transfer` and `transferFrom`. In particular, tokens with
    /// burn functions are not supported.
    /// - The token should not re-enter Morpho on `transfer` nor `transferFrom`.
    /// - The token balance of the sender (resp. receiver) should decrease (resp. increase) by exactly the given amount
    /// on `transfer` and `transferFrom`. In particular, tokens with fees on transfer are not supported.
    /// - The IRM should not re-enter Morpho.
    /// - The oracle should return a price with the correct scaling.
    /// - The oracle price should not be able to change instantly such that the new price is less than the old price
    /// multiplied by LLTV*LIF. In particular, if the loan asset is a vault that can receive donations, the oracle
    /// should not price its shares using the AUM.
    /// @dev Here is a list of assumptions on the market's dependencies which, if broken, could break Morpho's liveness
    /// properties (funds could get stuck):
    /// - The token should not revert on `transfer` and `transferFrom` if balances and approvals are right.
    /// - The amount of assets supplied and borrowed should not be too high (max ~1e32), otherwise the number of shares
    /// might not fit within 128 bits.
    /// - The IRM should not revert on `borrowRate`.
    /// - The IRM should not return a very high borrow rate (otherwise the computation of `interest` in
    /// `_accrueInterest` can overflow).
    /// - The oracle should not revert `price`.
    /// - The oracle should not return a very high price (otherwise the computation of `maxBorrow` in `_isHealthy` or of
    /// `assetsRepaid` in `liquidate` can overflow).
    /// @dev The borrow share price of a market with less than 1e4 assets borrowed can be decreased by manipulations, to
    /// the point where `totalBorrowShares` is very large and borrowing overflows.
    function createMarket(MarketParams memory marketParams) external;

    /// @notice Supplies `assets` or `shares` on behalf of `onBehalf`, optionally calling back the caller's
    /// `onMorphoSupply` function with the given `data`.
    /// @dev Either `assets` or `shares` should be zero. Most use cases should rely on `assets` as an input so the
    /// caller is guaranteed to have `assets` tokens pulled from their balance, but the possibility to mint a specific
    /// amount of shares is given for full compatibility and precision.
    /// @dev Supplying a large amount can revert for overflow.
    /// @dev Supplying an amount of shares may lead to supply more or fewer assets than expected due to slippage.
    /// Consider using the `assets` parameter to avoid this.
    /// @param marketParams The market to supply assets to.
    /// @param assets The amount of assets to supply.
    /// @param shares The amount of shares to mint.
    /// @param onBehalf The address that will own the increased supply position.
    /// @param data Arbitrary data to pass to the `onMorphoSupply` callback. Pass empty data if not needed.
    /// @return assetsSupplied The amount of assets supplied.
    /// @return sharesSupplied The amount of shares minted.
    function supply(
        MarketParams memory marketParams,
        uint256 assets,
        uint256 shares,
        address onBehalf,
        bytes memory data
    ) external returns (uint256 assetsSupplied, uint256 sharesSupplied);

    /// @notice Withdraws `assets` or `shares` on behalf of `onBehalf` and sends the assets to `receiver`.
    /// @dev Either `assets` or `shares` should be zero. To withdraw max, pass the `shares`'s balance of `onBehalf`.
    /// @dev `msg.sender` must be authorized to manage `onBehalf`'s positions.
    /// @dev Withdrawing an amount corresponding to more shares than supplied will revert for underflow.
    /// @dev It is advised to use the `shares` input when withdrawing the full position to avoid reverts due to
    /// conversion roundings between shares and assets.
    /// @param marketParams The market to withdraw assets from.
    /// @param assets The amount of assets to withdraw.
    /// @param shares The amount of shares to burn.
    /// @param onBehalf The address of the owner of the supply position.
    /// @param receiver The address that will receive the withdrawn assets.
    /// @return assetsWithdrawn The amount of assets withdrawn.
    /// @return sharesWithdrawn The amount of shares burned.
    function withdraw(
        MarketParams memory marketParams,
        uint256 assets,
        uint256 shares,
        address onBehalf,
        address receiver
    ) external returns (uint256 assetsWithdrawn, uint256 sharesWithdrawn);

    /// @notice Borrows `assets` or `shares` on behalf of `onBehalf` and sends the assets to `receiver`.
    /// @dev Either `assets` or `shares` should be zero. Most use cases should rely on `assets` as an input so the
    /// caller is guaranteed to borrow `assets` of tokens, but the possibility to mint a specific amount of shares is
    /// given for full compatibility and precision.
    /// @dev `msg.sender` must be authorized to manage `onBehalf`'s positions.
    /// @dev Borrowing a large amount can revert for overflow.
    /// @dev Borrowing an amount of shares may lead to borrow fewer assets than expected due to slippage.
    /// Consider using the `assets` parameter to avoid this.
    /// @param marketParams The market to borrow assets from.
    /// @param assets The amount of assets to borrow.
    /// @param shares The amount of shares to mint.
    /// @param onBehalf The address that will own the increased borrow position.
    /// @param receiver The address that will receive the borrowed assets.
    /// @return assetsBorrowed The amount of assets borrowed.
    /// @return sharesBorrowed The amount of shares minted.
    function borrow(
        MarketParams memory marketParams,
        uint256 assets,
        uint256 shares,
        address onBehalf,
        address receiver
    ) external returns (uint256 assetsBorrowed, uint256 sharesBorrowed);

    /// @notice Repays `assets` or `shares` on behalf of `onBehalf`, optionally calling back the caller's
    /// `onMorphoRepay` function with the given `data`.
    /// @dev Either `assets` or `shares` should be zero. To repay max, pass the `shares`'s balance of `onBehalf`.
    /// @dev Repaying an amount corresponding to more shares than borrowed will revert for underflow.
    /// @dev It is advised to use the `shares` input when repaying the full position to avoid reverts due to conversion
    /// roundings between shares and assets.
    /// @dev An attacker can front-run a repay with a small repay making the transaction revert for underflow.
    /// @param marketParams The market to repay assets to.
    /// @param assets The amount of assets to repay.
    /// @param shares The amount of shares to burn.
    /// @param onBehalf The address of the owner of the debt position.
    /// @param data Arbitrary data to pass to the `onMorphoRepay` callback. Pass empty data if not needed.
    /// @return assetsRepaid The amount of assets repaid.
    /// @return sharesRepaid The amount of shares burned.
    function repay(
        MarketParams memory marketParams,
        uint256 assets,
        uint256 shares,
        address onBehalf,
        bytes memory data
    ) external returns (uint256 assetsRepaid, uint256 sharesRepaid);

    /// @notice Supplies `assets` of collateral on behalf of `onBehalf`, optionally calling back the caller's
    /// `onMorphoSupplyCollateral` function with the given `data`.
    /// @dev Interest are not accrued since it's not required and it saves gas.
    /// @dev Supplying a large amount can revert for overflow.
    /// @param marketParams The market to supply collateral to.
    /// @param assets The amount of collateral to supply.
    /// @param onBehalf The address that will own the increased collateral position.
    /// @param data Arbitrary data to pass to the `onMorphoSupplyCollateral` callback. Pass empty data if not needed.
    function supplyCollateral(MarketParams memory marketParams, uint256 assets, address onBehalf, bytes memory data)
        external;

    /// @notice Withdraws `assets` of collateral on behalf of `onBehalf` and sends the assets to `receiver`.
    /// @dev `msg.sender` must be authorized to manage `onBehalf`'s positions.
    /// @dev Withdrawing an amount corresponding to more collateral than supplied will revert for underflow.
    /// @param marketParams The market to withdraw collateral from.
    /// @param assets The amount of collateral to withdraw.
    /// @param onBehalf The address of the owner of the collateral position.
    /// @param receiver The address that will receive the collateral assets.
    function withdrawCollateral(MarketParams memory marketParams, uint256 assets, address onBehalf, address receiver)
        external;

    /// @notice Liquidates the given `repaidShares` of debt asset or seize the given `seizedAssets` of collateral on the
    /// given market `marketParams` of the given `borrower`'s position, optionally calling back the caller's
    /// `onMorphoLiquidate` function with the given `data`.
    /// @dev Either `seizedAssets` or `repaidShares` should be zero.
    /// @dev Seizing more than the collateral balance will underflow and revert without any error message.
    /// @dev Repaying more than the borrow balance will underflow and revert without any error message.
    /// @dev An attacker can front-run a liquidation with a small repay making the transaction revert for underflow.
    /// @param marketParams The market of the position.
    /// @param borrower The owner of the position.
    /// @param seizedAssets The amount of collateral to seize.
    /// @param repaidShares The amount of shares to repay.
    /// @param data Arbitrary data to pass to the `onMorphoLiquidate` callback. Pass empty data if not needed.
    /// @return The amount of assets seized.
    /// @return The amount of assets repaid.
    function liquidate(
        MarketParams memory marketParams,
        address borrower,
        uint256 seizedAssets,
        uint256 repaidShares,
        bytes memory data
    ) external returns (uint256, uint256);

    /// @notice Executes a flash loan.
    /// @dev Flash loans have access to the whole balance of the contract (the liquidity and deposited collateral of all
    /// markets combined, plus donations).
    /// @dev Warning: Not ERC-3156 compliant but compatibility is easily reached:
    /// - `flashFee` is zero.
    /// - `maxFlashLoan` is the token's balance of this contract.
    /// - The receiver of `assets` is the caller.
    /// @param token The token to flash loan.
    /// @param assets The amount of assets to flash loan.
    /// @param data Arbitrary data to pass to the `onMorphoFlashLoan` callback.
    function flashLoan(address token, uint256 assets, bytes calldata data) external;

    /// @notice Sets the authorization for `authorized` to manage `msg.sender`'s positions.
    /// @param authorized The authorized address.
    /// @param newIsAuthorized The new authorization status.
    function setAuthorization(address authorized, bool newIsAuthorized) external;

    /// @notice Sets the authorization for `authorization.authorized` to manage `authorization.authorizer`'s positions.
    /// @dev Warning: Reverts if the signature has already been submitted.
    /// @dev The signature is malleable, but it has no impact on the security here.
    /// @dev The nonce is passed as argument to be able to revert with a different error message.
    /// @param authorization The `Authorization` struct.
    /// @param signature The signature.
    function setAuthorizationWithSig(Authorization calldata authorization, Signature calldata signature) external;

    /// @notice Accrues interest for the given market `marketParams`.
    function accrueInterest(MarketParams memory marketParams) external;

    /// @notice Returns the data stored on the different `slots`.
    function extSloads(bytes32[] memory slots) external view returns (bytes32[] memory);
}

/// @dev This interface is inherited by Morpho so that function signatures are checked by the compiler.
/// @dev Consider using the IMorpho interface instead of this one.
interface IMorphoStaticTyping is IMorphoBase {
    /// @notice The state of the position of `user` on the market corresponding to `id`.
    /// @dev Warning: For `feeRecipient`, `supplyShares` does not contain the accrued shares since the last interest
    /// accrual.
    function position(Id id, address user)
        external
        view
        returns (uint256 supplyShares, uint128 borrowShares, uint128 collateral);

    /// @notice The state of the market corresponding to `id`.
    /// @dev Warning: `totalSupplyAssets` does not contain the accrued interest since the last interest accrual.
    /// @dev Warning: `totalBorrowAssets` does not contain the accrued interest since the last interest accrual.
    /// @dev Warning: `totalSupplyShares` does not contain the accrued shares by `feeRecipient` since the last interest
    /// accrual.
    function market(Id id)
        external
        view
        returns (
            uint128 totalSupplyAssets,
            uint128 totalSupplyShares,
            uint128 totalBorrowAssets,
            uint128 totalBorrowShares,
            uint128 lastUpdate,
            uint128 fee
        );

    /// @notice The market params corresponding to `id`.
    /// @dev This mapping is not used in Morpho. It is there to enable reducing the cost associated to calldata on layer
    /// 2s by creating a wrapper contract with functions that take `id` as input instead of `marketParams`.
    function idToMarketParams(Id id)
        external
        view
        returns (address loanToken, address collateralToken, address oracle, address irm, uint256 lltv);
}

/// @title IMorpho
/// @author Morpho Labs
/// @custom:contact [email protected]
/// @dev Use this interface for Morpho to have access to all the functions with the appropriate function signatures.
interface IMorpho is IMorphoBase {
    /// @notice The state of the position of `user` on the market corresponding to `id`.
    /// @dev Warning: For `feeRecipient`, `p.supplyShares` does not contain the accrued shares since the last interest
    /// accrual.
    function position(Id id, address user) external view returns (Position memory p);

    /// @notice The state of the market corresponding to `id`.
    /// @dev Warning: `m.totalSupplyAssets` does not contain the accrued interest since the last interest accrual.
    /// @dev Warning: `m.totalBorrowAssets` does not contain the accrued interest since the last interest accrual.
    /// @dev Warning: `m.totalSupplyShares` does not contain the accrued shares by `feeRecipient` since the last
    /// interest accrual.
    function market(Id id) external view returns (Market memory m);

    /// @notice The market params corresponding to `id`.
    /// @dev This mapping is not used in Morpho. It is there to enable reducing the cost associated to calldata on layer
    /// 2s by creating a wrapper contract with functions that take `id` as input instead of `marketParams`.
    function idToMarketParams(Id id) external view returns (MarketParams memory);
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { IPriceFeed } from "../../shared/IPriceFeed.sol";
import { ZeroAddress } from "../../../utils/Helpers.sol";

/// @dev Borrow Lending Utils
abstract contract IBorrowLendingUtils {
    bytes32 constant BORROW_LENDING_UTILS_STORAGE_POSITION =
        keccak256("borrow.lending.utils.storage") & ~bytes32(uint256(0xff));

    struct BorrowLendingUtilStorage {
        address borrowToken;
        address collateralToken;
        IPriceFeed priceFeed;
    }

    function _riskInternal(address user, uint256 baseValue) internal view virtual returns (uint256);

    /// @dev calculate TP -> borrow / collateral * 1.04
    function _previewRiskInternal(
        uint256 baseValue,
        uint256 totalCollateral,
        uint256 totalBorrow
    )
        internal
        view
        virtual
        returns (uint256);

    // get balance of borrowed token (with interest) (in borrowed Token)
    function borrowBalance(address user) public view virtual returns (uint256);

    // get balance of collateral token (in collateral Token)
    function collateralBalance(address user) public view virtual returns (uint256);

    /// @return updatedBorrowAmount = borrowAmount + fee
    function _previewBorrow(uint256 borrowAmount) internal view virtual returns (uint256);

    /// @notice Returns balance in terms of collateral token (collateral - debt)
    function _balanceInCollateralToken(address user) internal view virtual returns (uint256);

    /**
     * @dev Use this function to add collateral or borrow amount
     *     @return collateralAdded - Collateral Added to Borrow Lending Pool
     *     @return amountBorrowed - Amount borrowed, this could be greater than debtToBorrow if fee is part of borrow
     */
    function _drawDebt(
        address user,
        uint256 collateralToAdd,
        uint256 debtToBorrow
    )
        internal
        virtual
        returns (uint256, uint256);

    /**
     * @dev Use this function to repay debt or pull out collateral post repayment
     *     @param repayReceipent - Repay remaining amount unpaid back to repayer
     *     @return collateralToPull - Collateral pulled out of Borrow Lending
     *     @return debtRepaid - Debt repaid (could be less than debtToRepay if remaining debt is less than amount
     * provided)
     */
    function _repayDebt(
        address user,
        uint256 collateralToPull,
        uint256 debtToRepay,
        address repayReceipent
    )
        internal
        virtual
        returns (uint256, uint256);

    function _setBorrowLendingStorage(BorrowLendingUtilStorage memory config) internal virtual {
        BorrowLendingUtilStorage storage s = _getBorrowLendingStorage();

        if (config.borrowToken == address(0)) revert ZeroAddress();
        if (config.collateralToken == address(0)) revert ZeroAddress();
        if (address(config.priceFeed) == address(0)) revert ZeroAddress();

        s.borrowToken = config.borrowToken;
        s.collateralToken = config.collateralToken;
        s.priceFeed = config.priceFeed;
    }

    function _getBorrowLendingStorage() internal pure virtual returns (BorrowLendingUtilStorage storage s) {
        bytes32 slot = BORROW_LENDING_UTILS_STORAGE_POSITION;
        assembly {
            s.slot := slot
        }
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

interface ILoopingUtil {
    error WeightsAlreadyCreated();
    error LoopLimitExceeded();
    error ZeroValueError();

    event WeightAdded(
        address user,
        uint64 stage,
        uint256 borrowWeight,
        uint256 collateralWeight,
        uint256 totalBorrowWeight,
        uint256 totalCollateralWeight
    );

    struct WeightInfo {
        uint256[10] borrowWeights; // weight of borrow at each step
        uint256[10] collateralWeights; // weight of collateral at each step
        uint256 totalBorrowWeight; // aggregated at time of deposit and withdrawal
        uint256 totalCollateralWeight; // aggregated at time of deposit and withdrawal
        uint64 loop; // total loops made
    }

    struct TVLInfo {
        uint256 totalCollateralAdded;
        uint256 totalCollateralRemoved;
        uint256 totalBorrowAdded;
        uint256 totalBorrowRemoved;
    }

    struct StageInfo {
        uint256 borrowWeight;
        uint256 collateralWeight;
        uint256 totalBorrowWeight;
        uint256 totalCollateralWeight;
        uint64 stage;
        uint64 loop;
    }

    function assertWeightsCreated(address user) external view;

    function getTVLInfo() external view returns (ILoopingUtil.TVLInfo memory);

    function getStageInfo(address user, uint64 stage) external view returns (ILoopingUtil.StageInfo memory);

    function pushWeightInfo(address user, uint256 borrowWeight, uint256 collateralWeight) external;

    function onDeposit(uint256 collateralAdded, uint256 amountBorrowed) external;

    function onWithdraw(uint256 collateralPulledOut, uint256 amountRepaid) external;
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

abstract contract IPriceFeed {
    error TokenPairMissing();

    // Gets token price in USD (WAD)
    function _getTokenBalanceInUSD(address src, uint256 value) internal view virtual returns (uint256);

    // Converts token src to token dst
    function _convertTokenBalance(address src, address dst, uint256 value) internal view virtual returns (uint256) {
        if (src == dst || value == 0) return value;
        revert TokenPairMissing();
    }

    function getTokenBalanceInUSD(address src, uint256 value) external view returns (uint256) {
        return _getTokenBalanceInUSD(src, value);
    }

    // Converts token src to token dst
    function convertTokenBalance(address src, address dst, uint256 value) external view returns (uint256) {
        return _convertTokenBalance(src, dst, value);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (utils/math/Math.sol)

pragma solidity ^0.8.20;

import {Panic} from "../Panic.sol";
import {SafeCast} from "./SafeCast.sol";

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Floor, // Toward negative infinity
        Ceil, // Toward positive infinity
        Trunc, // Toward zero
        Expand // Away from zero
    }

    /**
     * @dev Return the 512-bit addition of two uint256.
     *
     * The result is stored in two 256 variables such that sum = high * 2²⁵⁶ + low.
     */
    function add512(uint256 a, uint256 b) internal pure returns (uint256 high, uint256 low) {
        assembly ("memory-safe") {
            low := add(a, b)
            high := lt(low, a)
        }
    }

    /**
     * @dev Return the 512-bit multiplication of two uint256.
     *
     * The result is stored in two 256 variables such that product = high * 2²⁵⁶ + low.
     */
    function mul512(uint256 a, uint256 b) internal pure returns (uint256 high, uint256 low) {
        // 512-bit multiply [high low] = x * y. Compute the product mod 2²⁵⁶ and mod 2²⁵⁶ - 1, then use
        // the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
        // variables such that product = high * 2²⁵⁶ + low.
        assembly ("memory-safe") {
            let mm := mulmod(a, b, not(0))
            low := mul(a, b)
            high := sub(sub(mm, low), lt(mm, low))
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, with a success flag (no overflow).
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
        unchecked {
            uint256 c = a + b;
            success = c >= a;
            result = c * SafeCast.toUint(success);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with a success flag (no overflow).
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
        unchecked {
            uint256 c = a - b;
            success = c <= a;
            result = c * SafeCast.toUint(success);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with a success flag (no overflow).
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
        unchecked {
            uint256 c = a * b;
            assembly ("memory-safe") {
                // Only true when the multiplication doesn't overflow
                // (c / a == b) || (a == 0)
                success := or(eq(div(c, a), b), iszero(a))
            }
            // equivalent to: success ? c : 0
            result = c * SafeCast.toUint(success);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a success flag (no division by zero).
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
        unchecked {
            success = b > 0;
            assembly ("memory-safe") {
                // The `DIV` opcode returns zero when the denominator is 0.
                result := div(a, b)
            }
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a success flag (no division by zero).
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
        unchecked {
            success = b > 0;
            assembly ("memory-safe") {
                // The `MOD` opcode returns zero when the denominator is 0.
                result := mod(a, b)
            }
        }
    }

    /**
     * @dev Unsigned saturating addition, bounds to `2²⁵⁶ - 1` instead of overflowing.
     */
    function saturatingAdd(uint256 a, uint256 b) internal pure returns (uint256) {
        (bool success, uint256 result) = tryAdd(a, b);
        return ternary(success, result, type(uint256).max);
    }

    /**
     * @dev Unsigned saturating subtraction, bounds to zero instead of overflowing.
     */
    function saturatingSub(uint256 a, uint256 b) internal pure returns (uint256) {
        (, uint256 result) = trySub(a, b);
        return result;
    }

    /**
     * @dev Unsigned saturating multiplication, bounds to `2²⁵⁶ - 1` instead of overflowing.
     */
    function saturatingMul(uint256 a, uint256 b) internal pure returns (uint256) {
        (bool success, uint256 result) = tryMul(a, b);
        return ternary(success, result, type(uint256).max);
    }

    /**
     * @dev Branchless ternary evaluation for `a ? b : c`. Gas costs are constant.
     *
     * IMPORTANT: This function may reduce bytecode size and consume less gas when used standalone.
     * However, the compiler may optimize Solidity ternary operations (i.e. `a ? b : c`) to only compute
     * one branch when needed, making this function more expensive.
     */
    function ternary(bool condition, uint256 a, uint256 b) internal pure returns (uint256) {
        unchecked {
            // branchless ternary works because:
            // b ^ (a ^ b) == a
            // b ^ 0 == b
            return b ^ ((a ^ b) * SafeCast.toUint(condition));
        }
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return ternary(a > b, a, b);
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return ternary(a < b, a, b);
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds towards infinity instead
     * of rounding towards zero.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        if (b == 0) {
            // Guarantee the same behavior as in a regular Solidity division.
            Panic.panic(Panic.DIVISION_BY_ZERO);
        }

        // The following calculation ensures accurate ceiling division without overflow.
        // Since a is non-zero, (a - 1) / b will not overflow.
        // The largest possible result occurs when (a - 1) / b is type(uint256).max,
        // but the largest value we can obtain is type(uint256).max - 1, which happens
        // when a = type(uint256).max and b = 1.
        unchecked {
            return SafeCast.toUint(a > 0) * ((a - 1) / b + 1);
        }
    }

    /**
     * @dev Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
     * denominator == 0.
     *
     * Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
     * Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            (uint256 high, uint256 low) = mul512(x, y);

            // Handle non-overflow cases, 256 by 256 division.
            if (high == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return low / denominator;
            }

            // Make sure the result is less than 2²⁵⁶. Also prevents denominator == 0.
            if (denominator <= high) {
                Panic.panic(ternary(denominator == 0, Panic.DIVISION_BY_ZERO, Panic.UNDER_OVERFLOW));
            }

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [high low].
            uint256 remainder;
            assembly ("memory-safe") {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                high := sub(high, gt(remainder, low))
                low := sub(low, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator.
            // Always >= 1. See https://cs.stackexchange.com/q/138556/92363.

            uint256 twos = denominator & (0 - denominator);
            assembly ("memory-safe") {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [high low] by twos.
                low := div(low, twos)

                // Flip twos such that it is 2²⁵⁶ / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from high into low.
            low |= high * twos;

            // Invert denominator mod 2²⁵⁶. Now that denominator is an odd number, it has an inverse modulo 2²⁵⁶ such
            // that denominator * inv ≡ 1 mod 2²⁵⁶. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv ≡ 1 mod 2⁴.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
            // works in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2⁸
            inverse *= 2 - denominator * inverse; // inverse mod 2¹⁶
            inverse *= 2 - denominator * inverse; // inverse mod 2³²
            inverse *= 2 - denominator * inverse; // inverse mod 2⁶⁴
            inverse *= 2 - denominator * inverse; // inverse mod 2¹²⁸
            inverse *= 2 - denominator * inverse; // inverse mod 2²⁵⁶

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2²⁵⁶. Since the preconditions guarantee that the outcome is
            // less than 2²⁵⁶, this is the final result. We don't need to compute the high bits of the result and high
            // is no longer required.
            result = low * inverse;
            return result;
        }
    }

    /**
     * @dev Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        return mulDiv(x, y, denominator) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0);
    }

    /**
     * @dev Calculates floor(x * y >> n) with full precision. Throws if result overflows a uint256.
     */
    function mulShr(uint256 x, uint256 y, uint8 n) internal pure returns (uint256 result) {
        unchecked {
            (uint256 high, uint256 low) = mul512(x, y);
            if (high >= 1 << n) {
                Panic.panic(Panic.UNDER_OVERFLOW);
            }
            return (high << (256 - n)) | (low >> n);
        }
    }

    /**
     * @dev Calculates x * y >> n with full precision, following the selected rounding direction.
     */
    function mulShr(uint256 x, uint256 y, uint8 n, Rounding rounding) internal pure returns (uint256) {
        return mulShr(x, y, n) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, 1 << n) > 0);
    }

    /**
     * @dev Calculate the modular multiplicative inverse of a number in Z/nZ.
     *
     * If n is a prime, then Z/nZ is a field. In that case all elements are inversible, except 0.
     * If n is not a prime, then Z/nZ is not a field, and some elements might not be inversible.
     *
     * If the input value is not inversible, 0 is returned.
     *
     * NOTE: If you know for sure that n is (big) a prime, it may be cheaper to use Fermat's little theorem and get the
     * inverse using `Math.modExp(a, n - 2, n)`. See {invModPrime}.
     */
    function invMod(uint256 a, uint256 n) internal pure returns (uint256) {
        unchecked {
            if (n == 0) return 0;

            // The inverse modulo is calculated using the Extended Euclidean Algorithm (iterative version)
            // Used to compute integers x and y such that: ax + ny = gcd(a, n).
            // When the gcd is 1, then the inverse of a modulo n exists and it's x.
            // ax + ny = 1
            // ax = 1 + (-y)n
            // ax ≡ 1 (mod n) # x is the inverse of a modulo n

            // If the remainder is 0 the gcd is n right away.
            uint256 remainder = a % n;
            uint256 gcd = n;

            // Therefore the initial coefficients are:
            // ax + ny = gcd(a, n) = n
            // 0a + 1n = n
            int256 x = 0;
            int256 y = 1;

            while (remainder != 0) {
                uint256 quotient = gcd / remainder;

                (gcd, remainder) = (
                    // The old remainder is the next gcd to try.
                    remainder,
                    // Compute the next remainder.
                    // Can't overflow given that (a % gcd) * (gcd // (a % gcd)) <= gcd
                    // where gcd is at most n (capped to type(uint256).max)
                    gcd - remainder * quotient
                );

                (x, y) = (
                    // Increment the coefficient of a.
                    y,
                    // Decrement the coefficient of n.
                    // Can overflow, but the result is casted to uint256 so that the
                    // next value of y is "wrapped around" to a value between 0 and n - 1.
                    x - y * int256(quotient)
                );
            }

            if (gcd != 1) return 0; // No inverse exists.
            return ternary(x < 0, n - uint256(-x), uint256(x)); // Wrap the result if it's negative.
        }
    }

    /**
     * @dev Variant of {invMod}. More efficient, but only works if `p` is known to be a prime greater than `2`.
     *
     * From https://en.wikipedia.org/wiki/Fermat%27s_little_theorem[Fermat's little theorem], we know that if p is
     * prime, then `a**(p-1) ≡ 1 mod p`. As a consequence, we have `a * a**(p-2) ≡ 1 mod p`, which means that
     * `a**(p-2)` is the modular multiplicative inverse of a in Fp.
     *
     * NOTE: this function does NOT check that `p` is a prime greater than `2`.
     */
    function invModPrime(uint256 a, uint256 p) internal view returns (uint256) {
        unchecked {
            return Math.modExp(a, p - 2, p);
        }
    }

    /**
     * @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m)
     *
     * Requirements:
     * - modulus can't be zero
     * - underlying staticcall to precompile must succeed
     *
     * IMPORTANT: The result is only valid if the underlying call succeeds. When using this function, make
     * sure the chain you're using it on supports the precompiled contract for modular exponentiation
     * at address 0x05 as specified in https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise,
     * the underlying function will succeed given the lack of a revert, but the result may be incorrectly
     * interpreted as 0.
     */
    function modExp(uint256 b, uint256 e, uint256 m) internal view returns (uint256) {
        (bool success, uint256 result) = tryModExp(b, e, m);
        if (!success) {
            Panic.panic(Panic.DIVISION_BY_ZERO);
        }
        return result;
    }

    /**
     * @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m).
     * It includes a success flag indicating if the operation succeeded. Operation will be marked as failed if trying
     * to operate modulo 0 or if the underlying precompile reverted.
     *
     * IMPORTANT: The result is only valid if the success flag is true. When using this function, make sure the chain
     * you're using it on supports the precompiled contract for modular exponentiation at address 0x05 as specified in
     * https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, the underlying function will succeed given the lack
     * of a revert, but the result may be incorrectly interpreted as 0.
     */
    function tryModExp(uint256 b, uint256 e, uint256 m) internal view returns (bool success, uint256 result) {
        if (m == 0) return (false, 0);
        assembly ("memory-safe") {
            let ptr := mload(0x40)
            // | Offset    | Content    | Content (Hex)                                                      |
            // |-----------|------------|--------------------------------------------------------------------|
            // | 0x00:0x1f | size of b  | 0x0000000000000000000000000000000000000000000000000000000000000020 |
            // | 0x20:0x3f | size of e  | 0x0000000000000000000000000000000000000000000000000000000000000020 |
            // | 0x40:0x5f | size of m  | 0x0000000000000000000000000000000000000000000000000000000000000020 |
            // | 0x60:0x7f | value of b | 0x<.............................................................b> |
            // | 0x80:0x9f | value of e | 0x<.............................................................e> |
            // | 0xa0:0xbf | value of m | 0x<.............................................................m> |
            mstore(ptr, 0x20)
            mstore(add(ptr, 0x20), 0x20)
            mstore(add(ptr, 0x40), 0x20)
            mstore(add(ptr, 0x60), b)
            mstore(add(ptr, 0x80), e)
            mstore(add(ptr, 0xa0), m)

            // Given the result < m, it's guaranteed to fit in 32 bytes,
            // so we can use the memory scratch space located at offset 0.
            success := staticcall(gas(), 0x05, ptr, 0xc0, 0x00, 0x20)
            result := mload(0x00)
        }
    }

    /**
     * @dev Variant of {modExp} that supports inputs of arbitrary length.
     */
    function modExp(bytes memory b, bytes memory e, bytes memory m) internal view returns (bytes memory) {
        (bool success, bytes memory result) = tryModExp(b, e, m);
        if (!success) {
            Panic.panic(Panic.DIVISION_BY_ZERO);
        }
        return result;
    }

    /**
     * @dev Variant of {tryModExp} that supports inputs of arbitrary length.
     */
    function tryModExp(
        bytes memory b,
        bytes memory e,
        bytes memory m
    ) internal view returns (bool success, bytes memory result) {
        if (_zeroBytes(m)) return (false, new bytes(0));

        uint256 mLen = m.length;

        // Encode call args in result and move the free memory pointer
        result = abi.encodePacked(b.length, e.length, mLen, b, e, m);

        assembly ("memory-safe") {
            let dataPtr := add(result, 0x20)
            // Write result on top of args to avoid allocating extra memory.
            success := staticcall(gas(), 0x05, dataPtr, mload(result), dataPtr, mLen)
            // Overwrite the length.
            // result.length > returndatasize() is guaranteed because returndatasize() == m.length
            mstore(result, mLen)
            // Set the memory pointer after the returned data.
            mstore(0x40, add(dataPtr, mLen))
        }
    }

    /**
     * @dev Returns whether the provided byte array is zero.
     */
    function _zeroBytes(bytes memory byteArray) private pure returns (bool) {
        for (uint256 i = 0; i < byteArray.length; ++i) {
            if (byteArray[i] != 0) {
                return false;
            }
        }
        return true;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
     * towards zero.
     *
     * This method is based on Newton's method for computing square roots; the algorithm is restricted to only
     * using integer operations.
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        unchecked {
            // Take care of easy edge cases when a == 0 or a == 1
            if (a <= 1) {
                return a;
            }

            // In this function, we use Newton's method to get a root of `f(x) := x² - a`. It involves building a
            // sequence x_n that converges toward sqrt(a). For each iteration x_n, we also define the error between
            // the current value as `ε_n = | x_n - sqrt(a) |`.
            //
            // For our first estimation, we consider `e` the smallest power of 2 which is bigger than the square root
            // of the target. (i.e. `2**(e-1) ≤ sqrt(a) < 2**e`). We know that `e ≤ 128` because `(2¹²⁸)² = 2²⁵⁶` is
            // bigger than any uint256.
            //
            // By noticing that
            // `2**(e-1) ≤ sqrt(a) < 2**e → (2**(e-1))² ≤ a < (2**e)² → 2**(2*e-2) ≤ a < 2**(2*e)`
            // we can deduce that `e - 1` is `log2(a) / 2`. We can thus compute `x_n = 2**(e-1)` using a method similar
            // to the msb function.
            uint256 aa = a;
            uint256 xn = 1;

            if (aa >= (1 << 128)) {
                aa >>= 128;
                xn <<= 64;
            }
            if (aa >= (1 << 64)) {
                aa >>= 64;
                xn <<= 32;
            }
            if (aa >= (1 << 32)) {
                aa >>= 32;
                xn <<= 16;
            }
            if (aa >= (1 << 16)) {
                aa >>= 16;
                xn <<= 8;
            }
            if (aa >= (1 << 8)) {
                aa >>= 8;
                xn <<= 4;
            }
            if (aa >= (1 << 4)) {
                aa >>= 4;
                xn <<= 2;
            }
            if (aa >= (1 << 2)) {
                xn <<= 1;
            }

            // We now have x_n such that `x_n = 2**(e-1) ≤ sqrt(a) < 2**e = 2 * x_n`. This implies ε_n ≤ 2**(e-1).
            //
            // We can refine our estimation by noticing that the middle of that interval minimizes the error.
            // If we move x_n to equal 2**(e-1) + 2**(e-2), then we reduce the error to ε_n ≤ 2**(e-2).
            // This is going to be our x_0 (and ε_0)
            xn = (3 * xn) >> 1; // ε_0 := | x_0 - sqrt(a) | ≤ 2**(e-2)

            // From here, Newton's method give us:
            // x_{n+1} = (x_n + a / x_n) / 2
            //
            // One should note that:
            // x_{n+1}² - a = ((x_n + a / x_n) / 2)² - a
            //              = ((x_n² + a) / (2 * x_n))² - a
            //              = (x_n⁴ + 2 * a * x_n² + a²) / (4 * x_n²) - a
            //              = (x_n⁴ + 2 * a * x_n² + a² - 4 * a * x_n²) / (4 * x_n²)
            //              = (x_n⁴ - 2 * a * x_n² + a²) / (4 * x_n²)
            //              = (x_n² - a)² / (2 * x_n)²
            //              = ((x_n² - a) / (2 * x_n))²
            //              ≥ 0
            // Which proves that for all n ≥ 1, sqrt(a) ≤ x_n
            //
            // This gives us the proof of quadratic convergence of the sequence:
            // ε_{n+1} = | x_{n+1} - sqrt(a) |
            //         = | (x_n + a / x_n) / 2 - sqrt(a) |
            //         = | (x_n² + a - 2*x_n*sqrt(a)) / (2 * x_n) |
            //         = | (x_n - sqrt(a))² / (2 * x_n) |
            //         = | ε_n² / (2 * x_n) |
            //         = ε_n² / | (2 * x_n) |
            //
            // For the first iteration, we have a special case where x_0 is known:
            // ε_1 = ε_0² / | (2 * x_0) |
            //     ≤ (2**(e-2))² / (2 * (2**(e-1) + 2**(e-2)))
            //     ≤ 2**(2*e-4) / (3 * 2**(e-1))
            //     ≤ 2**(e-3) / 3
            //     ≤ 2**(e-3-log2(3))
            //     ≤ 2**(e-4.5)
            //
            // For the following iterations, we use the fact that, 2**(e-1) ≤ sqrt(a) ≤ x_n:
            // ε_{n+1} = ε_n² / | (2 * x_n) |
            //         ≤ (2**(e-k))² / (2 * 2**(e-1))
            //         ≤ 2**(2*e-2*k) / 2**e
            //         ≤ 2**(e-2*k)
            xn = (xn + a / xn) >> 1; // ε_1 := | x_1 - sqrt(a) | ≤ 2**(e-4.5)  -- special case, see above
            xn = (xn + a / xn) >> 1; // ε_2 := | x_2 - sqrt(a) | ≤ 2**(e-9)    -- general case with k = 4.5
            xn = (xn + a / xn) >> 1; // ε_3 := | x_3 - sqrt(a) | ≤ 2**(e-18)   -- general case with k = 9
            xn = (xn + a / xn) >> 1; // ε_4 := | x_4 - sqrt(a) | ≤ 2**(e-36)   -- general case with k = 18
            xn = (xn + a / xn) >> 1; // ε_5 := | x_5 - sqrt(a) | ≤ 2**(e-72)   -- general case with k = 36
            xn = (xn + a / xn) >> 1; // ε_6 := | x_6 - sqrt(a) | ≤ 2**(e-144)  -- general case with k = 72

            // Because e ≤ 128 (as discussed during the first estimation phase), we know have reached a precision
            // ε_6 ≤ 2**(e-144) < 1. Given we're operating on integers, then we can ensure that xn is now either
            // sqrt(a) or sqrt(a) + 1.
            return xn - SafeCast.toUint(xn > a / xn);
        }
    }

    /**
     * @dev Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + SafeCast.toUint(unsignedRoundsUp(rounding) && result * result < a);
        }
    }

    /**
     * @dev Return the log in base 2 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log2(uint256 x) internal pure returns (uint256 r) {
        // If value has upper 128 bits set, log2 result is at least 128
        r = SafeCast.toUint(x > 0xffffffffffffffffffffffffffffffff) << 7;
        // If upper 64 bits of 128-bit half set, add 64 to result
        r |= SafeCast.toUint((x >> r) > 0xffffffffffffffff) << 6;
        // If upper 32 bits of 64-bit half set, add 32 to result
        r |= SafeCast.toUint((x >> r) > 0xffffffff) << 5;
        // If upper 16 bits of 32-bit half set, add 16 to result
        r |= SafeCast.toUint((x >> r) > 0xffff) << 4;
        // If upper 8 bits of 16-bit half set, add 8 to result
        r |= SafeCast.toUint((x >> r) > 0xff) << 3;
        // If upper 4 bits of 8-bit half set, add 4 to result
        r |= SafeCast.toUint((x >> r) > 0xf) << 2;

        // Shifts value right by the current result and use it as an index into this lookup table:
        //
        // | x (4 bits) |  index  | table[index] = MSB position |
        // |------------|---------|-----------------------------|
        // |    0000    |    0    |        table[0] = 0         |
        // |    0001    |    1    |        table[1] = 0         |
        // |    0010    |    2    |        table[2] = 1         |
        // |    0011    |    3    |        table[3] = 1         |
        // |    0100    |    4    |        table[4] = 2         |
        // |    0101    |    5    |        table[5] = 2         |
        // |    0110    |    6    |        table[6] = 2         |
        // |    0111    |    7    |        table[7] = 2         |
        // |    1000    |    8    |        table[8] = 3         |
        // |    1001    |    9    |        table[9] = 3         |
        // |    1010    |   10    |        table[10] = 3        |
        // |    1011    |   11    |        table[11] = 3        |
        // |    1100    |   12    |        table[12] = 3        |
        // |    1101    |   13    |        table[13] = 3        |
        // |    1110    |   14    |        table[14] = 3        |
        // |    1111    |   15    |        table[15] = 3        |
        //
        // The lookup table is represented as a 32-byte value with the MSB positions for 0-15 in the last 16 bytes.
        assembly ("memory-safe") {
            r := or(r, byte(shr(r, x), 0x0000010102020202030303030303030300000000000000000000000000000000))
        }
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << result < value);
        }
    }

    /**
     * @dev Return the log in base 10 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 10 ** result < value);
        }
    }

    /**
     * @dev Return the log in base 256 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 x) internal pure returns (uint256 r) {
        // If value has upper 128 bits set, log2 result is at least 128
        r = SafeCast.toUint(x > 0xffffffffffffffffffffffffffffffff) << 7;
        // If upper 64 bits of 128-bit half set, add 64 to result
        r |= SafeCast.toUint((x >> r) > 0xffffffffffffffff) << 6;
        // If upper 32 bits of 64-bit half set, add 32 to result
        r |= SafeCast.toUint((x >> r) > 0xffffffff) << 5;
        // If upper 16 bits of 32-bit half set, add 16 to result
        r |= SafeCast.toUint((x >> r) > 0xffff) << 4;
        // Add 1 if upper 8 bits of 16-bit half set, and divide accumulated result by 8
        return (r >> 3) | SafeCast.toUint((x >> r) > 0xff);
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << (result << 3) < value);
        }
    }

    /**
     * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
     */
    function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
        return uint8(rounding) % 2 == 1;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC20Metadata} from "./extensions/IERC20Metadata.sol";
import {Context} from "../../utils/Context.sol";
import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC-20
 * applications.
 */
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
    mapping(address account => uint256) private _balances;

    mapping(address account => mapping(address spender => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * Both values are immutable: they can only be set once during construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return 18;
    }

    /// @inheritdoc IERC20
    function totalSupply() public view virtual returns (uint256) {
        return _totalSupply;
    }

    /// @inheritdoc IERC20
    function balanceOf(address account) public view virtual returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `value`.
     */
    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

    /// @inheritdoc IERC20
    function allowance(address owner, address spender) public view virtual returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, value);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Skips emitting an {Approval} event indicating an allowance update. This is not
     * required by the ERC. See {xref-ERC20-_approve-address-address-uint256-bool-}[_approve].
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `value`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `value`.
     */
    function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(address from, address to, uint256 value) internal {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            _totalSupply += value;
        } else {
            uint256 fromBalance = _balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                _balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                _totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                _balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` as the allowance of `spender` over the `owner`'s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     *
     * ```solidity
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        _allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner`'s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance < type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(spender, currentAllowance, value);
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    /**
     * @dev An operation with an ERC-20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { Math } from "@openzeppelin/contracts/utils/math/Math.sol";

import { IOracle } from "@morpho-blue/src/interfaces/IOracle.sol";
import { IMorpho, MarketParams, Id } from "@morpho-blue/src/interfaces/IMorpho.sol";

import { MorphoLib } from "@morpho-blue/src/libraries/periphery/MorphoLib.sol";
import { SharesMathLib } from "@morpho-blue/src/libraries/SharesMathLib.sol";
import { MarketParamsLib } from "@morpho-blue/src/libraries/MarketParamsLib.sol";
import { MorphoBalancesLib } from "@morpho-blue/src/libraries/periphery/MorphoBalancesLib.sol";

import { ORACLE_PRICE_SCALE } from "@morpho-blue/src/libraries/ConstantsLib.sol";

import { IPriceFeed } from "../../../../../interfaces/shared/IPriceFeed.sol";

import { Constants } from "../../../../../positions/Constants.sol";
import { BaseMorphoCommons } from "./BaseMorphoCommons.sol";

/// @dev Utility functions to be used by Ajna Borrow Lending strategy and Spectra Looping
abstract contract BaseMorphoUtils is BaseMorphoCommons {
    using SharesMathLib for uint256;
    using MorphoLib for IMorpho;
    using MorphoBalancesLib for IMorpho;

    using MarketParamsLib for MarketParams;

    function _supplyLoanToken(
        address user,
        uint256 amount
    )
        internal
        returns (uint256 assetsSupplied, uint256 sharesReceived)
    {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();
        BorrowLendingUtilStorage storage b = _getBorrowLendingStorage();

        IMorpho morpho = s.morpho;
        IERC20 borrowToken = IERC20(b.borrowToken);
        MarketParams memory params = s.marketParams;

        SafeERC20.forceApprove(borrowToken, address(morpho), amount);
        (assetsSupplied, sharesReceived) = morpho.supply(params, amount, 0, user, hex"");
    }

    /// @notice Withdraws a specified amount of loan tokens from the user's supply position
    /// @dev use max amount if user wants to withdraw all shares
    function _withdrawLoanToken(
        address user,
        uint256 amount
    )
        internal
        returns (uint256 assetsWithdrawn, uint256 sharesBurned)
    {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();
        IMorpho morpho = s.morpho;
        MarketParams memory params = s.marketParams;

        morpho.accrueInterest(params);

        uint256 maxAmount = _supplyBalance(user);
        if (amount > maxAmount) {
            (assetsWithdrawn, sharesBurned) = _withdrawAllLoanToken(user);
            return (assetsWithdrawn, sharesBurned);
        }

        (assetsWithdrawn, sharesBurned) = s.morpho.withdraw(params, amount, 0, user, user);
    }

    function _withdrawAllLoanToken(address user) internal returns (uint256 assetsWithdrawn, uint256 sharesBurned) {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();
        IMorpho morpho = s.morpho;
        MarketParams memory params = s.marketParams;

        uint256 allShares = morpho.supplyShares(params.id(), user);
        (assetsWithdrawn, sharesBurned) = morpho.withdraw(params, 0, allShares, user, user);
    }

    /**
     * @dev To be used via inheritence
     */
    function _drawDebt(
        address user,
        uint256 collateralToAdd,
        uint256 debtToBorrow
    )
        internal
        override
        returns (uint256, uint256)
    {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();
        BorrowLendingUtilStorage storage b = _getBorrowLendingStorage();

        IMorpho morpho = s.morpho;
        MarketParams memory params = s.marketParams;

        if (collateralToAdd > 0) {
            ERC20 collateralToken = ERC20(b.collateralToken);
            SafeERC20.forceApprove(collateralToken, address(morpho), collateralToAdd);
            morpho.supplyCollateral(params, collateralToAdd, user, hex"");
        }

        uint256 debtBorrowed = 0;
        if (debtToBorrow > 0) {
            (debtBorrowed,) = morpho.borrow(params, debtToBorrow, 0, user, user);
        }

        return (collateralToAdd, debtBorrowed);
    }

    /**
     * @dev To be used via inheritence
     */
    function _repayDebt(
        address user,
        uint256 collateralToPull,
        uint256 debtToRepay,
        address repayRecipent
    )
        internal
        override
        returns (uint256, uint256)
    {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();
        BorrowLendingUtilStorage storage b = _getBorrowLendingStorage();

        MorphoRepayParams memory repayParams =
            MorphoRepayParams({ morpho: s.morpho, marketParams: s.marketParams, borrowToken: b.borrowToken });

        repayParams.morpho.accrueInterest(repayParams.marketParams);

        uint256 debtRepaid = 0;
        if (debtToRepay > 0) {
            uint256 assetsMax = repayParams.morpho.expectedBorrowAssets(repayParams.marketParams, user);

            if (debtToRepay >= assetsMax) {
                debtRepaid = _repayAll(user, debtToRepay, repayRecipent);
            } else {
                SafeERC20.forceApprove(IERC20(repayParams.borrowToken), address(repayParams.morpho), debtToRepay);
                (debtRepaid,) = repayParams.morpho.repay(repayParams.marketParams, debtToRepay, 0, user, hex"");
            }
        }

        if (collateralToPull > 0) {
            repayParams.morpho.withdrawCollateral(repayParams.marketParams, collateralToPull, user, user);
        }

        return (collateralToPull, debtRepaid);
    }

    /// @dev it is recommended to use borrow shares in cases where complete debt is to be paid
    function _repayAll(
        address user,
        uint256 amount,
        address repayRecipent
    )
        internal
        override
        returns (uint256 assetRepaid)
    {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();
        BorrowLendingUtilStorage storage b = _getBorrowLendingStorage();

        IERC20 borrowToken = IERC20(b.borrowToken);

        SafeERC20.forceApprove(borrowToken, address(s.morpho), amount);

        // Get Total borrow shares for user
        uint256 shares = s.morpho.borrowShares(s.marketParams.id(), user);

        (assetRepaid,) = s.morpho.repay(s.marketParams, 0, shares, user, hex"");
        SafeERC20.forceApprove(borrowToken, address(s.morpho), 0);

        if (amount > assetRepaid) {
            SafeERC20.safeTransfer(borrowToken, repayRecipent, amount - assetRepaid);
        }
    }

    function _onFlashLoan(uint256 assets, bytes memory data) internal override {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();
        BorrowLendingUtilStorage storage b = _getBorrowLendingStorage();

        IMorpho morpho = s.morpho;
        address borrowToken = b.borrowToken;

        morpho.flashLoan(borrowToken, assets, data);
    }

    // get balance of borrowed token (with interest) (in borrowed Token)
    function borrowBalance(address user) public view override returns (uint256) {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();

        IMorpho morpho = s.morpho;
        MarketParams memory params = s.marketParams;

        uint256 accuredBorrow = morpho.expectedBorrowAssets(params, user);
        return accuredBorrow;
    }

    function _supplyBalance(address user) internal view returns (uint256) {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();

        IMorpho morpho = s.morpho;
        MarketParams memory params = s.marketParams;

        return morpho.expectedSupplyAssets(params, user);
    }

    function _withdrawableSupplyBalance(address user) internal view returns (uint256) {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();

        IMorpho morpho = s.morpho;
        MarketParams memory params = s.marketParams;

        uint256 totalBorrow = morpho.totalBorrowAssets(params.id());
        uint256 totalSupply = morpho.totalSupplyAssets(params.id());
        uint256 supplyBalance = morpho.expectedSupplyAssets(params, user);

        uint256 withdrawableSupply = totalSupply - totalBorrow;

        return Math.min(withdrawableSupply, supplyBalance);
    }

    // get balance of collateral token (in collateral Token)
    function collateralBalance(address user) public view override returns (uint256) {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();

        IMorpho morpho = s.morpho;
        MarketParams memory params = s.marketParams;

        return morpho.collateral(params.id(), user);
    }

    function _riskInternal(address user, uint256 baseValue) internal view override returns (uint256) {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();

        IMorpho morpho = s.morpho;
        MarketParams memory params = s.marketParams;

        uint256 collateralPrice = IOracle(params.oracle).price();
        uint256 collateral = morpho.collateral(params.id(), user);

        uint256 borrowed = morpho.expectedBorrowAssets(params, user);

        uint256 maxBorrowUncapped = Math.mulDiv(collateral, collateralPrice, ORACLE_PRICE_SCALE);
        uint256 maxBorrow = Math.mulDiv(maxBorrowUncapped, params.lltv, Constants.WAD);

        return Math.mulDiv(borrowed, baseValue, maxBorrow);
    }

    /// @dev calculate TP -> borrow / collateral * 1.04
    function _previewRiskInternal(
        uint256 baseValue,
        uint256 totalCollateral,
        uint256 totalBorrow
    )
        internal
        view
        override
        returns (uint256)
    {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();

        MarketParams memory params = s.marketParams;
        IOracle oracle = IOracle(params.oracle);
        uint256 collateralPrice = oracle.price();

        uint256 maxBorrowUncapped = Math.mulDiv(totalCollateral, collateralPrice, ORACLE_PRICE_SCALE);
        uint256 maxBorrow = Math.mulDiv(maxBorrowUncapped, params.lltv, Constants.WAD);

        return Math.mulDiv(totalBorrow, baseValue, maxBorrow);
    }

    /// @return updatedBorrowAmount = borrowAmount + originationFee
    function _previewBorrow(uint256 borrowAmount) internal pure override returns (uint256) {
        return borrowAmount;
    }

    function _balanceInCollateralToken(address user) internal view override returns (uint256) {
        BorrowLendingUtilStorage storage b = _getBorrowLendingStorage();

        IPriceFeed priceFeed = b.priceFeed;
        address collateralToken = b.collateralToken;
        address borrowToken = b.borrowToken;

        uint256 cBalance = collateralBalance(user);
        uint256 bBalance = borrowBalance(user);

        uint256 bBalanceInCollateralToken = priceFeed.convertTokenBalance(borrowToken, collateralToken, bBalance);

        return cBalance > bBalanceInCollateralToken ? cBalance - bBalanceInCollateralToken : 0;
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { Math } from "@openzeppelin/contracts/utils/math/Math.sol";
import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";

import { IPriceFeed } from "../../../../../interfaces/shared/IPriceFeed.sol";
import { ILoopingUtil } from "../../../../../interfaces/positions/ILoopingUtil.sol";
import { IFlashLoanUtils } from "../../../../../interfaces/positions/BorrowLending/IFlashLoanUtils.sol";
import {
    ILoopingFlashLoanableCommons
} from "../../../../../interfaces/positions/Looping/ILoopingFlashLoanableCommons.sol";

import { Constants } from "../../../../../positions/Constants.sol";
import { PermissionDenied, DivideByZeroError, ZeroAddress } from "../../../../../utils/Helpers.sol";

abstract contract BaseLoopingFlashLoanableCommon is ILoopingFlashLoanableCommons, IFlashLoanUtils {
    bytes32 constant LOOPING_FLASH_LOANABLE_COMMON_STORAGE_POSITION =
        keccak256("looping.flash.loanable.common.storage") & ~bytes32(uint256(0xff));

    uint64 constant INITIAL_DEPOSIT_STAGE = 0;

    modifier onlyFlashLoanCaller() {
        LoopingFlashLoanableCommonStorage storage s = _getLoopingFlashLoanableCommonStorage();
        if (s.flashLoanCaller != msg.sender) revert PermissionDenied();
        _;
    }

    /// @notice get current user leverage in WAD
    function _getLeverage(address user) internal view returns (uint256) {
        LoopingFlashLoanableCommonStorage storage s = _getLoopingFlashLoanableCommonStorage();
        ILoopingUtil loopingUtil = s.loopingUtil;

        ILoopingUtil.StageInfo memory stageInfo = loopingUtil.getStageInfo(user, INITIAL_DEPOSIT_STAGE);
        require(stageInfo.collateralWeight != 0, DivideByZeroError());

        return Math.mulDiv(stageInfo.totalCollateralWeight, Constants.WAD, stageInfo.collateralWeight);
    }

    /// @dev Use this function to calculate how much amount needs to borrowed using flash loan
    /// so that `_shares` amount of collateral can be withdrawn from portfolio without affecting the risk
    function _calculateWithdrawalAmountByShares(
        uint256 _shares,
        uint256 totalBorrow,
        uint256 totalCollateral
    )
        internal
        view
        returns (uint256 collateralToBePulled, uint256 flashLoanAmount)
    {
        require(_shares != 0, DivideByZeroError());

        WithdrawalAmountCalculations memory calc = WithdrawalAmountCalculations({
            sharesInBorrowToken: _previewSwapCollateralToBorrow(_shares),
            totalCollateralInBorrowToken: _previewSwapCollateralToBorrow(totalCollateral),
            adjustedRiskRatio: 0
        });

        require(calc.totalCollateralInBorrowToken != 0, DivideByZeroError());

        // Use this value to calculate adjusted risk ratio
        calc.adjustedRiskRatio = Math.mulDiv(totalBorrow, Constants.WAD, calc.totalCollateralInBorrowToken);
        require(calc.adjustedRiskRatio < Constants.WAD, "Risk Ratio exceeds 1");

        // flashLoanAmount = sharesInBorrowToken * adjustedRisk / (1 - adjustedRisk)
        flashLoanAmount =
            Math.mulDiv(calc.sharesInBorrowToken, calc.adjustedRiskRatio, Constants.WAD - calc.adjustedRiskRatio);

        // Swap flash loan amount to collateral token
        collateralToBePulled = _shares + _previewSwapBorrowToCollateral(flashLoanAmount);

        // If flash loan amount exceed total borrow this implies user is withdrawing more shares than existing balance
        if (flashLoanAmount > totalBorrow) revert WithdrawalBalanceExceeded();
        if (collateralToBePulled > totalCollateral) revert MaxCollateralSharesExceeded();
    }

    /// @notice buffer to be applied to the amount to be swapped
    /// @dev The amount to be swapped will be received after selling the PT to get primary deposit token.
    /// @dev Hence we will keep the amount to be swapped lower than the amount previewed, to account for the slippage on
    /// @dev PT -> primary deposit token.
    function _getSwapAmountWithBuffer(uint256 amount) internal view returns (uint256) {
        LoopingFlashLoanableCommonStorage storage s = _getLoopingFlashLoanableCommonStorage();
        return Math.mulDiv(amount, Constants.WAD - s.amountToBeSwappedBufferInWAD, Constants.WAD);
    }

    /// @notice buffer to be applied to the flash loan amount
    /// @dev The flash loan amount will be used to repay the borrow.
    /// @dev Since the position can accure some debt at time of repayment, we will add some buffer to cover for that.
    function _getFlashLoanAmountWithBuffer(uint256 amount) internal view returns (uint256) {
        LoopingFlashLoanableCommonStorage storage s = _getLoopingFlashLoanableCommonStorage();
        return Math.mulDiv(amount, Constants.WAD + s.withdrawAllBufferInWAD, Constants.WAD);
    }

    function _setLoopingFlashLoanableCommonStorage(LoopingFlashLoanableCommonStorage memory config) internal {
        if (config.maxLeverage < Constants.WAD) revert LeverageOutOfBounds();
        if (config.primaryDepositToken == address(0)) revert ZeroAddress();
        if (config.flashLoanCaller == address(0)) revert ZeroAddress();
        if (address(config.priceFeed) == address(0)) revert ZeroAddress();
        if (address(config.loopingUtil) == address(0)) revert ZeroAddress();

        LoopingFlashLoanableCommonStorage storage s = _getLoopingFlashLoanableCommonStorage();

        s.amountToBeSwappedBufferInWAD = config.amountToBeSwappedBufferInWAD;
        s.withdrawAllBufferInWAD = config.withdrawAllBufferInWAD;
        s.actionDeadline = config.actionDeadline;
        s.maxLeverage = config.maxLeverage;

        s.primaryDepositToken = config.primaryDepositToken;
        s.flashLoanCaller = config.flashLoanCaller;
        s.loopingUtil = config.loopingUtil;
        s.priceFeed = config.priceFeed;
    }

    function _getLoopingFlashLoanableCommonStorage()
        internal
        pure
        returns (LoopingFlashLoanableCommonStorage storage s)
    {
        bytes32 slot = LOOPING_FLASH_LOANABLE_COMMON_STORAGE_POSITION;
        assembly {
            s.slot := slot
        }
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { Math } from "@openzeppelin/contracts/utils/math/Math.sol";
import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import {
    InitialDepositEstimateResult,
    StandardDepositEstimateResult,
    StandardWithdrawEstimateResult,
    WithdrawAllEstimateResult,
    DepositActionParams,
    WithdrawActionParams
} from "../../../../../interfaces/positions/ILoopingInternals.sol";

import { IVaultManager } from "../../../../../interfaces/positions/IVaultManager.sol";
import { IVaultStrategy } from "../../../../../interfaces/positions/IVaultStrategy.sol";
import { IStrategyManager } from "../../../../../interfaces/positions/IStrategyManager.sol";

import { Constants } from "../../../../../positions/Constants.sol";

import { VersionedVaultUtils } from "../../../base/VersionedVaultUtils.sol";
import { BaseLoopingFlashLoanableUtils } from "./BaseLoopingFlashLoanableUtils.sol";

abstract contract BaseLoopingFlashLoanableStrategy is
    VersionedVaultUtils,
    BaseLoopingFlashLoanableUtils,
    IVaultStrategy
{
    /// =========================== View Functions ==============================================
    function version() external view override returns (uint256) {
        return _getVaultStrategyStorage().version;
    }

    /// @notice Used to preview total PT shares bought by the user and risk taken
    /// @dev This function should be called by static call or in simulated fashion
    /// @param _tokenAddress address of input token (hemiBTC, bfBTC)
    /// @param _value value of deposit token
    /// @param _leverage target leverage user wants to achieve
    /// @dev The remaining two parameters are for internal use and not to be shown by the user
    /// @return InitialDepositEstimateResult -> (totalCollateral, estimatedLeverage, risk, lendingThreshold, iterations)
    function previewInitialDeposit(
        address _tokenAddress,
        uint256 _value,
        uint256 _leverage
    )
        external
        view
        virtual
        returns (InitialDepositEstimateResult memory)
    {
        return _previewInitialDeposit(_tokenAddress, _value, _leverage);
    }

    /// @notice Used to preview total PT shares bought by the user and risk taken
    /// @dev This function should be called by static call or in simulated fashion
    /// @param _tokenAddress address of input token (hemiBTC, bfBTC)
    /// @param _value value of deposit token
    /// @return StandardDepositEstimateResult -> (totalCollateralBought, risk)
    function previewStandardDeposit(
        address user,
        address _tokenAddress,
        uint256 _value
    )
        external
        view
        virtual
        returns (StandardDepositEstimateResult memory)
    {
        return _previewStandardDeposit(user, _tokenAddress, _value);
    }

    /// @notice Used to preview total IBT shares received by the user and risk
    /// @dev This function should be called by static call or in simulated fashion
    /// @param _shares withdrawn by the user
    /// @return StandardWithdrawEstimateResult -> (totalIBTReceived, risk)
    function previewStandardWithdraw(
        address user,
        uint256 _shares
    )
        external
        view
        virtual
        returns (StandardWithdrawEstimateResult memory)
    {
        return _previewStandardWithdraw(user, _shares);
    }

    /// @notice Used to preview max IBT shares received by the user
    /// @dev This function should be called by static call or in simulated fashion
    function previewWithdrawAll(address user) external view virtual returns (WithdrawAllEstimateResult memory) {
        return _previewWithdrawAll(user);
    }

    function encodeConfigForDeposit(
        DepositActionParams memory actionParams,
        bytes calldata swapCalldata
    )
        external
        pure
        returns (bytes memory)
    {
        return abi.encode(actionParams, swapCalldata);
    }

    function encodeConfigForWithdraw(
        WithdrawActionParams memory actionParams,
        bytes calldata swapCalldata
    )
        external
        pure
        returns (bytes memory)
    {
        return abi.encode(actionParams, swapCalldata);
    }

    // read-only functions
    function risk(address user, uint256 baseValue) external view returns (uint256) {
        return _riskInternal(user, baseValue);
    }

    /// @return lev in WAD
    function leverage(address user) external view returns (uint256) {
        return _getLeverage(user);
    }

    function balanceInUSD(address user) external view override returns (uint256) {
        BorrowLendingUtilStorage memory b = _getBorrowLendingStorage();
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();

        BalanceInUSDParams memory params =
            BalanceInUSDParams({ priceFeed: s.priceFeed, collateralToken: b.collateralToken });

        return params.priceFeed.getTokenBalanceInUSD(params.collateralToken, _balanceInCollateralToken(user));
    }

    // Withdrawal Token - PT
    function balanceInWithdrawalToken(address user) external view override returns (uint256) {
        return _balanceInWithdrawalToken(user);
    }

    function validatePreDeposit(
        address, /*user*/
        uint64, /*transactionCode*/
        address _tokenAddress,
        uint256,
        /*value*/ // value in terms of underlying / IBT token.
        IStrategyManager.StrategyConfig calldata, /*strategyConfig*/
        IVaultManager.VaultStrategyConfig calldata, /*userConfig*/
        bytes calldata _extras
    )
        external
        view
        virtual
    {
        (DepositActionParams memory actionParams,) = _decodeConfigForDeposit(_extras);
        _validateInputForDeposit(_tokenAddress, actionParams);
    }

    /// =========================== Write Functions =============================================

    /// @dev this call will always be delegated
    function deposit(
        address user,
        uint64 transactionCode,
        address _tokenAddress,
        uint256 _value,
        IStrategyManager.StrategyConfig calldata, /*strategyConfig*/
        IVaultManager.VaultStrategyConfig calldata, /*userConfig*/
        bytes calldata _extras
    )
        external
        payable
        override
        onlyPositionManager
    {
        (DepositActionParams memory actionParams, bytes memory swapCalldata) = _decodeConfigForDeposit(_extras);

        _validateInputForDeposit(_tokenAddress, actionParams);

        if (transactionCode == Constants.TRANSACTION_CODE_INITIAL_DEPOSIT) {
            return _initialDeposit(user, _tokenAddress, _value, actionParams, swapCalldata);
        } else if (transactionCode == Constants.TRANSACTION_CODE_STANDARD_DEPOSIT) {
            return _standardDeposit(user, _tokenAddress, _value, actionParams, swapCalldata);
        }

        revert InvalidTransactionCode(transactionCode);
    }

    /// @dev this call will always be delegated
    function withdraw(
        address user,
        uint64 transactionCode,
        address _tokenAddress,
        uint256 _value,
        IStrategyManager.StrategyConfig calldata, /*strategyConfig*/
        IVaultManager.VaultStrategyConfig calldata userConfig,
        bytes calldata _extras
    )
        external
        payable
        override
        onlyPositionManager
    {
        (WithdrawActionParams memory actionParams, bytes memory swapCalldata) = _decodeConfigForWithdrawal(_extras);

        _validateInputForWithdrawal(_tokenAddress, actionParams);

        if (transactionCode == Constants.TRANSACTION_CODE_STANDARD_WITHDRAW) {
            return _standardWithdraw(user, _value, userConfig, actionParams, swapCalldata);
        } else if (transactionCode == Constants.TRANSACTION_CODE_WITHDRAW_ALL) {
            return _withdrawAll(user, userConfig, actionParams, swapCalldata);
        }

        revert InvalidTransactionCode(transactionCode);
    }

    function onFlashLoan(
        address user,
        uint64 transactionCode,
        address _tokenAddress,
        uint256 _value,
        uint256 flashLoanAmount,
        bytes calldata _extras
    )
        external
        payable
        onlyFlashLoanCaller
    {
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();
        BorrowLendingUtilStorage storage b = _getBorrowLendingStorage();

        FlashLoanCallerParams memory params =
            FlashLoanCallerParams({ borrowToken: b.borrowToken, flashLoanCaller: s.flashLoanCaller });

        if (transactionCode == Constants.TRANSACTION_CODE_FLASH_LOAN_DEPOSIT) {
            (bool isInitial, bytes memory swapCalldata) = _decodeConfigForFlashLoanDeposit(_extras);
            _onFlashLoanForDeposit(user, flashLoanAmount, _tokenAddress, _value, swapCalldata, isInitial);
        } else if (transactionCode == Constants.TRANSACTION_CODE_FLASH_LOAN_WITHDRAW) {
            (bytes memory swapCalldata) = _decodeConfigForFlashLoanWithdrawal(_extras);
            _onFlashLoanForStandardWithdrawal(user, _value, flashLoanAmount, swapCalldata);
        } else if (transactionCode == Constants.TRANSACTION_CODE_FLASH_LOAN_WITHDRAW_ALL) {
            (bytes memory swapCalldata) = _decodeConfigForFlashLoanWithdrawal(_extras);
            _onFlashLoanForWithdrawAll(user, flashLoanAmount, swapCalldata);
        } else {
            revert InvalidTransactionCode(transactionCode);
        }

        SafeERC20.forceApprove(ERC20(params.borrowToken), params.flashLoanCaller, flashLoanAmount);
    }

    function _validateInputForDeposit(
        address, /*_tokenAddress*/
        DepositActionParams memory actionParams
    )
        internal
        view
        virtual
    {
        if (actionParams.deadline < block.timestamp) revert DeadlineExceeded();
    }

    function _validateInputForWithdrawal(
        address _tokenAddress,
        WithdrawActionParams memory actionParams
    )
        internal
        view
    {
        BorrowLendingUtilStorage storage b = _getBorrowLendingStorage();

        address collateralToken = b.collateralToken;

        if (_tokenAddress != collateralToken) revert InvalidToken(_tokenAddress);
        if (actionParams.deadline < block.timestamp) revert DeadlineExceeded();
    }

    function _decodeConfigForFlashLoanDeposit(bytes calldata _extras) private pure returns (bool, bytes memory) {
        return abi.decode(_extras, (bool, bytes));
    }

    function _decodeConfigForFlashLoanWithdrawal(bytes calldata _extras) private pure returns (bytes memory) {
        return abi.decode(_extras, (bytes));
    }

    function _decodeConfigForDeposit(bytes calldata _extras)
        private
        pure
        returns (DepositActionParams memory, bytes memory)
    {
        return abi.decode(_extras, (DepositActionParams, bytes));
    }

    function _decodeConfigForWithdrawal(bytes calldata _extras)
        private
        pure
        returns (WithdrawActionParams memory, bytes memory)
    {
        return abi.decode(_extras, (WithdrawActionParams, bytes));
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.28;

// common errors
error IncorrectTypeID(uint256 _typeId, address _sender);
error NegativePriceError();
error PriceStaleError();
error CallFailed();
error NotDepositContract(address _address);
error NotExecutor(address _address);
error NotStrategyContract(address _address);
error IncorrectTokenAddress(address _tokenAddress);
error IncorrectValue();
error IncorrectMessageAddress(address _sender);
error ZeroAddress();
error ZeroAmount();
error ZeroValue();
error MinimumDustAmountError();
error NonPayableFunction();
error DivideByZeroError();
error PermissionDenied();
error InvalidLendingThreshold();

error NotImplemented();

// common events

//deposit events

//deposit

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/Panic.sol)

pragma solidity ^0.8.20;

/**
 * @dev Helper library for emitting standardized panic codes.
 *
 * ```solidity
 * contract Example {
 *      using Panic for uint256;
 *
 *      // Use any of the declared internal constants
 *      function foo() { Panic.GENERIC.panic(); }
 *
 *      // Alternatively
 *      function foo() { Panic.panic(Panic.GENERIC); }
 * }
 * ```
 *
 * Follows the list from https://github.com/ethereum/solidity/blob/v0.8.24/libsolutil/ErrorCodes.h[libsolutil].
 *
 * _Available since v5.1._
 */
// slither-disable-next-line unused-state
library Panic {
    /// @dev generic / unspecified error
    uint256 internal constant GENERIC = 0x00;
    /// @dev used by the assert() builtin
    uint256 internal constant ASSERT = 0x01;
    /// @dev arithmetic underflow or overflow
    uint256 internal constant UNDER_OVERFLOW = 0x11;
    /// @dev division or modulo by zero
    uint256 internal constant DIVISION_BY_ZERO = 0x12;
    /// @dev enum conversion error
    uint256 internal constant ENUM_CONVERSION_ERROR = 0x21;
    /// @dev invalid encoding in storage
    uint256 internal constant STORAGE_ENCODING_ERROR = 0x22;
    /// @dev empty array pop
    uint256 internal constant EMPTY_ARRAY_POP = 0x31;
    /// @dev array out of bounds access
    uint256 internal constant ARRAY_OUT_OF_BOUNDS = 0x32;
    /// @dev resource error (too large allocation or too large array)
    uint256 internal constant RESOURCE_ERROR = 0x41;
    /// @dev calling invalid internal function
    uint256 internal constant INVALID_INTERNAL_FUNCTION = 0x51;

    /// @dev Reverts with a panic code. Recommended to use with
    /// the internal constants with predefined codes.
    function panic(uint256 code) internal pure {
        assembly ("memory-safe") {
            mstore(0x00, 0x4e487b71)
            mstore(0x20, code)
            revert(0x1c, 0x24)
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.

pragma solidity ^0.8.20;

/**
 * @dev Wrappers over Solidity's uintXX/intXX/bool casting operators with added overflow
 * checks.
 *
 * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
 * easily result in undesired exploitation or bugs, since developers usually
 * assume that overflows raise errors. `SafeCast` restores this intuition by
 * reverting the transaction when such an operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeCast {
    /**
     * @dev Value doesn't fit in an uint of `bits` size.
     */
    error SafeCastOverflowedUintDowncast(uint8 bits, uint256 value);

    /**
     * @dev An int value doesn't fit in an uint of `bits` size.
     */
    error SafeCastOverflowedIntToUint(int256 value);

    /**
     * @dev Value doesn't fit in an int of `bits` size.
     */
    error SafeCastOverflowedIntDowncast(uint8 bits, int256 value);

    /**
     * @dev An uint value doesn't fit in an int of `bits` size.
     */
    error SafeCastOverflowedUintToInt(uint256 value);

    /**
     * @dev Returns the downcasted uint248 from uint256, reverting on
     * overflow (when the input is greater than largest uint248).
     *
     * Counterpart to Solidity's `uint248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     */
    function toUint248(uint256 value) internal pure returns (uint248) {
        if (value > type(uint248).max) {
            revert SafeCastOverflowedUintDowncast(248, value);
        }
        return uint248(value);
    }

    /**
     * @dev Returns the downcasted uint240 from uint256, reverting on
     * overflow (when the input is greater than largest uint240).
     *
     * Counterpart to Solidity's `uint240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     */
    function toUint240(uint256 value) internal pure returns (uint240) {
        if (value > type(uint240).max) {
            revert SafeCastOverflowedUintDowncast(240, value);
        }
        return uint240(value);
    }

    /**
     * @dev Returns the downcasted uint232 from uint256, reverting on
     * overflow (when the input is greater than largest uint232).
     *
     * Counterpart to Solidity's `uint232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     */
    function toUint232(uint256 value) internal pure returns (uint232) {
        if (value > type(uint232).max) {
            revert SafeCastOverflowedUintDowncast(232, value);
        }
        return uint232(value);
    }

    /**
     * @dev Returns the downcasted uint224 from uint256, reverting on
     * overflow (when the input is greater than largest uint224).
     *
     * Counterpart to Solidity's `uint224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     */
    function toUint224(uint256 value) internal pure returns (uint224) {
        if (value > type(uint224).max) {
            revert SafeCastOverflowedUintDowncast(224, value);
        }
        return uint224(value);
    }

    /**
     * @dev Returns the downcasted uint216 from uint256, reverting on
     * overflow (when the input is greater than largest uint216).
     *
     * Counterpart to Solidity's `uint216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     */
    function toUint216(uint256 value) internal pure returns (uint216) {
        if (value > type(uint216).max) {
            revert SafeCastOverflowedUintDowncast(216, value);
        }
        return uint216(value);
    }

    /**
     * @dev Returns the downcasted uint208 from uint256, reverting on
     * overflow (when the input is greater than largest uint208).
     *
     * Counterpart to Solidity's `uint208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     */
    function toUint208(uint256 value) internal pure returns (uint208) {
        if (value > type(uint208).max) {
            revert SafeCastOverflowedUintDowncast(208, value);
        }
        return uint208(value);
    }

    /**
     * @dev Returns the downcasted uint200 from uint256, reverting on
     * overflow (when the input is greater than largest uint200).
     *
     * Counterpart to Solidity's `uint200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     */
    function toUint200(uint256 value) internal pure returns (uint200) {
        if (value > type(uint200).max) {
            revert SafeCastOverflowedUintDowncast(200, value);
        }
        return uint200(value);
    }

    /**
     * @dev Returns the downcasted uint192 from uint256, reverting on
     * overflow (when the input is greater than largest uint192).
     *
     * Counterpart to Solidity's `uint192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     */
    function toUint192(uint256 value) internal pure returns (uint192) {
        if (value > type(uint192).max) {
            revert SafeCastOverflowedUintDowncast(192, value);
        }
        return uint192(value);
    }

    /**
     * @dev Returns the downcasted uint184 from uint256, reverting on
     * overflow (when the input is greater than largest uint184).
     *
     * Counterpart to Solidity's `uint184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     */
    function toUint184(uint256 value) internal pure returns (uint184) {
        if (value > type(uint184).max) {
            revert SafeCastOverflowedUintDowncast(184, value);
        }
        return uint184(value);
    }

    /**
     * @dev Returns the downcasted uint176 from uint256, reverting on
     * overflow (when the input is greater than largest uint176).
     *
     * Counterpart to Solidity's `uint176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     */
    function toUint176(uint256 value) internal pure returns (uint176) {
        if (value > type(uint176).max) {
            revert SafeCastOverflowedUintDowncast(176, value);
        }
        return uint176(value);
    }

    /**
     * @dev Returns the downcasted uint168 from uint256, reverting on
     * overflow (when the input is greater than largest uint168).
     *
     * Counterpart to Solidity's `uint168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     */
    function toUint168(uint256 value) internal pure returns (uint168) {
        if (value > type(uint168).max) {
            revert SafeCastOverflowedUintDowncast(168, value);
        }
        return uint168(value);
    }

    /**
     * @dev Returns the downcasted uint160 from uint256, reverting on
     * overflow (when the input is greater than largest uint160).
     *
     * Counterpart to Solidity's `uint160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     */
    function toUint160(uint256 value) internal pure returns (uint160) {
        if (value > type(uint160).max) {
            revert SafeCastOverflowedUintDowncast(160, value);
        }
        return uint160(value);
    }

    /**
     * @dev Returns the downcasted uint152 from uint256, reverting on
     * overflow (when the input is greater than largest uint152).
     *
     * Counterpart to Solidity's `uint152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     */
    function toUint152(uint256 value) internal pure returns (uint152) {
        if (value > type(uint152).max) {
            revert SafeCastOverflowedUintDowncast(152, value);
        }
        return uint152(value);
    }

    /**
     * @dev Returns the downcasted uint144 from uint256, reverting on
     * overflow (when the input is greater than largest uint144).
     *
     * Counterpart to Solidity's `uint144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     */
    function toUint144(uint256 value) internal pure returns (uint144) {
        if (value > type(uint144).max) {
            revert SafeCastOverflowedUintDowncast(144, value);
        }
        return uint144(value);
    }

    /**
     * @dev Returns the downcasted uint136 from uint256, reverting on
     * overflow (when the input is greater than largest uint136).
     *
     * Counterpart to Solidity's `uint136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     */
    function toUint136(uint256 value) internal pure returns (uint136) {
        if (value > type(uint136).max) {
            revert SafeCastOverflowedUintDowncast(136, value);
        }
        return uint136(value);
    }

    /**
     * @dev Returns the downcasted uint128 from uint256, reverting on
     * overflow (when the input is greater than largest uint128).
     *
     * Counterpart to Solidity's `uint128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     */
    function toUint128(uint256 value) internal pure returns (uint128) {
        if (value > type(uint128).max) {
            revert SafeCastOverflowedUintDowncast(128, value);
        }
        return uint128(value);
    }

    /**
     * @dev Returns the downcasted uint120 from uint256, reverting on
     * overflow (when the input is greater than largest uint120).
     *
     * Counterpart to Solidity's `uint120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     */
    function toUint120(uint256 value) internal pure returns (uint120) {
        if (value > type(uint120).max) {
            revert SafeCastOverflowedUintDowncast(120, value);
        }
        return uint120(value);
    }

    /**
     * @dev Returns the downcasted uint112 from uint256, reverting on
     * overflow (when the input is greater than largest uint112).
     *
     * Counterpart to Solidity's `uint112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     */
    function toUint112(uint256 value) internal pure returns (uint112) {
        if (value > type(uint112).max) {
            revert SafeCastOverflowedUintDowncast(112, value);
        }
        return uint112(value);
    }

    /**
     * @dev Returns the downcasted uint104 from uint256, reverting on
     * overflow (when the input is greater than largest uint104).
     *
     * Counterpart to Solidity's `uint104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     */
    function toUint104(uint256 value) internal pure returns (uint104) {
        if (value > type(uint104).max) {
            revert SafeCastOverflowedUintDowncast(104, value);
        }
        return uint104(value);
    }

    /**
     * @dev Returns the downcasted uint96 from uint256, reverting on
     * overflow (when the input is greater than largest uint96).
     *
     * Counterpart to Solidity's `uint96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     */
    function toUint96(uint256 value) internal pure returns (uint96) {
        if (value > type(uint96).max) {
            revert SafeCastOverflowedUintDowncast(96, value);
        }
        return uint96(value);
    }

    /**
     * @dev Returns the downcasted uint88 from uint256, reverting on
     * overflow (when the input is greater than largest uint88).
     *
     * Counterpart to Solidity's `uint88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     */
    function toUint88(uint256 value) internal pure returns (uint88) {
        if (value > type(uint88).max) {
            revert SafeCastOverflowedUintDowncast(88, value);
        }
        return uint88(value);
    }

    /**
     * @dev Returns the downcasted uint80 from uint256, reverting on
     * overflow (when the input is greater than largest uint80).
     *
     * Counterpart to Solidity's `uint80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     */
    function toUint80(uint256 value) internal pure returns (uint80) {
        if (value > type(uint80).max) {
            revert SafeCastOverflowedUintDowncast(80, value);
        }
        return uint80(value);
    }

    /**
     * @dev Returns the downcasted uint72 from uint256, reverting on
     * overflow (when the input is greater than largest uint72).
     *
     * Counterpart to Solidity's `uint72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     */
    function toUint72(uint256 value) internal pure returns (uint72) {
        if (value > type(uint72).max) {
            revert SafeCastOverflowedUintDowncast(72, value);
        }
        return uint72(value);
    }

    /**
     * @dev Returns the downcasted uint64 from uint256, reverting on
     * overflow (when the input is greater than largest uint64).
     *
     * Counterpart to Solidity's `uint64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     */
    function toUint64(uint256 value) internal pure returns (uint64) {
        if (value > type(uint64).max) {
            revert SafeCastOverflowedUintDowncast(64, value);
        }
        return uint64(value);
    }

    /**
     * @dev Returns the downcasted uint56 from uint256, reverting on
     * overflow (when the input is greater than largest uint56).
     *
     * Counterpart to Solidity's `uint56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     */
    function toUint56(uint256 value) internal pure returns (uint56) {
        if (value > type(uint56).max) {
            revert SafeCastOverflowedUintDowncast(56, value);
        }
        return uint56(value);
    }

    /**
     * @dev Returns the downcasted uint48 from uint256, reverting on
     * overflow (when the input is greater than largest uint48).
     *
     * Counterpart to Solidity's `uint48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     */
    function toUint48(uint256 value) internal pure returns (uint48) {
        if (value > type(uint48).max) {
            revert SafeCastOverflowedUintDowncast(48, value);
        }
        return uint48(value);
    }

    /**
     * @dev Returns the downcasted uint40 from uint256, reverting on
     * overflow (when the input is greater than largest uint40).
     *
     * Counterpart to Solidity's `uint40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     */
    function toUint40(uint256 value) internal pure returns (uint40) {
        if (value > type(uint40).max) {
            revert SafeCastOverflowedUintDowncast(40, value);
        }
        return uint40(value);
    }

    /**
     * @dev Returns the downcasted uint32 from uint256, reverting on
     * overflow (when the input is greater than largest uint32).
     *
     * Counterpart to Solidity's `uint32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     */
    function toUint32(uint256 value) internal pure returns (uint32) {
        if (value > type(uint32).max) {
            revert SafeCastOverflowedUintDowncast(32, value);
        }
        return uint32(value);
    }

    /**
     * @dev Returns the downcasted uint24 from uint256, reverting on
     * overflow (when the input is greater than largest uint24).
     *
     * Counterpart to Solidity's `uint24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     */
    function toUint24(uint256 value) internal pure returns (uint24) {
        if (value > type(uint24).max) {
            revert SafeCastOverflowedUintDowncast(24, value);
        }
        return uint24(value);
    }

    /**
     * @dev Returns the downcasted uint16 from uint256, reverting on
     * overflow (when the input is greater than largest uint16).
     *
     * Counterpart to Solidity's `uint16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     */
    function toUint16(uint256 value) internal pure returns (uint16) {
        if (value > type(uint16).max) {
            revert SafeCastOverflowedUintDowncast(16, value);
        }
        return uint16(value);
    }

    /**
     * @dev Returns the downcasted uint8 from uint256, reverting on
     * overflow (when the input is greater than largest uint8).
     *
     * Counterpart to Solidity's `uint8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     */
    function toUint8(uint256 value) internal pure returns (uint8) {
        if (value > type(uint8).max) {
            revert SafeCastOverflowedUintDowncast(8, value);
        }
        return uint8(value);
    }

    /**
     * @dev Converts a signed int256 into an unsigned uint256.
     *
     * Requirements:
     *
     * - input must be greater than or equal to 0.
     */
    function toUint256(int256 value) internal pure returns (uint256) {
        if (value < 0) {
            revert SafeCastOverflowedIntToUint(value);
        }
        return uint256(value);
    }

    /**
     * @dev Returns the downcasted int248 from int256, reverting on
     * overflow (when the input is less than smallest int248 or
     * greater than largest int248).
     *
     * Counterpart to Solidity's `int248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     */
    function toInt248(int256 value) internal pure returns (int248 downcasted) {
        downcasted = int248(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(248, value);
        }
    }

    /**
     * @dev Returns the downcasted int240 from int256, reverting on
     * overflow (when the input is less than smallest int240 or
     * greater than largest int240).
     *
     * Counterpart to Solidity's `int240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     */
    function toInt240(int256 value) internal pure returns (int240 downcasted) {
        downcasted = int240(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(240, value);
        }
    }

    /**
     * @dev Returns the downcasted int232 from int256, reverting on
     * overflow (when the input is less than smallest int232 or
     * greater than largest int232).
     *
     * Counterpart to Solidity's `int232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     */
    function toInt232(int256 value) internal pure returns (int232 downcasted) {
        downcasted = int232(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(232, value);
        }
    }

    /**
     * @dev Returns the downcasted int224 from int256, reverting on
     * overflow (when the input is less than smallest int224 or
     * greater than largest int224).
     *
     * Counterpart to Solidity's `int224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     */
    function toInt224(int256 value) internal pure returns (int224 downcasted) {
        downcasted = int224(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(224, value);
        }
    }

    /**
     * @dev Returns the downcasted int216 from int256, reverting on
     * overflow (when the input is less than smallest int216 or
     * greater than largest int216).
     *
     * Counterpart to Solidity's `int216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     */
    function toInt216(int256 value) internal pure returns (int216 downcasted) {
        downcasted = int216(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(216, value);
        }
    }

    /**
     * @dev Returns the downcasted int208 from int256, reverting on
     * overflow (when the input is less than smallest int208 or
     * greater than largest int208).
     *
     * Counterpart to Solidity's `int208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     */
    function toInt208(int256 value) internal pure returns (int208 downcasted) {
        downcasted = int208(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(208, value);
        }
    }

    /**
     * @dev Returns the downcasted int200 from int256, reverting on
     * overflow (when the input is less than smallest int200 or
     * greater than largest int200).
     *
     * Counterpart to Solidity's `int200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     */
    function toInt200(int256 value) internal pure returns (int200 downcasted) {
        downcasted = int200(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(200, value);
        }
    }

    /**
     * @dev Returns the downcasted int192 from int256, reverting on
     * overflow (when the input is less than smallest int192 or
     * greater than largest int192).
     *
     * Counterpart to Solidity's `int192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     */
    function toInt192(int256 value) internal pure returns (int192 downcasted) {
        downcasted = int192(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(192, value);
        }
    }

    /**
     * @dev Returns the downcasted int184 from int256, reverting on
     * overflow (when the input is less than smallest int184 or
     * greater than largest int184).
     *
     * Counterpart to Solidity's `int184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     */
    function toInt184(int256 value) internal pure returns (int184 downcasted) {
        downcasted = int184(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(184, value);
        }
    }

    /**
     * @dev Returns the downcasted int176 from int256, reverting on
     * overflow (when the input is less than smallest int176 or
     * greater than largest int176).
     *
     * Counterpart to Solidity's `int176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     */
    function toInt176(int256 value) internal pure returns (int176 downcasted) {
        downcasted = int176(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(176, value);
        }
    }

    /**
     * @dev Returns the downcasted int168 from int256, reverting on
     * overflow (when the input is less than smallest int168 or
     * greater than largest int168).
     *
     * Counterpart to Solidity's `int168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     */
    function toInt168(int256 value) internal pure returns (int168 downcasted) {
        downcasted = int168(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(168, value);
        }
    }

    /**
     * @dev Returns the downcasted int160 from int256, reverting on
     * overflow (when the input is less than smallest int160 or
     * greater than largest int160).
     *
     * Counterpart to Solidity's `int160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     */
    function toInt160(int256 value) internal pure returns (int160 downcasted) {
        downcasted = int160(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(160, value);
        }
    }

    /**
     * @dev Returns the downcasted int152 from int256, reverting on
     * overflow (when the input is less than smallest int152 or
     * greater than largest int152).
     *
     * Counterpart to Solidity's `int152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     */
    function toInt152(int256 value) internal pure returns (int152 downcasted) {
        downcasted = int152(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(152, value);
        }
    }

    /**
     * @dev Returns the downcasted int144 from int256, reverting on
     * overflow (when the input is less than smallest int144 or
     * greater than largest int144).
     *
     * Counterpart to Solidity's `int144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     */
    function toInt144(int256 value) internal pure returns (int144 downcasted) {
        downcasted = int144(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(144, value);
        }
    }

    /**
     * @dev Returns the downcasted int136 from int256, reverting on
     * overflow (when the input is less than smallest int136 or
     * greater than largest int136).
     *
     * Counterpart to Solidity's `int136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     */
    function toInt136(int256 value) internal pure returns (int136 downcasted) {
        downcasted = int136(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(136, value);
        }
    }

    /**
     * @dev Returns the downcasted int128 from int256, reverting on
     * overflow (when the input is less than smallest int128 or
     * greater than largest int128).
     *
     * Counterpart to Solidity's `int128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     */
    function toInt128(int256 value) internal pure returns (int128 downcasted) {
        downcasted = int128(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(128, value);
        }
    }

    /**
     * @dev Returns the downcasted int120 from int256, reverting on
     * overflow (when the input is less than smallest int120 or
     * greater than largest int120).
     *
     * Counterpart to Solidity's `int120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     */
    function toInt120(int256 value) internal pure returns (int120 downcasted) {
        downcasted = int120(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(120, value);
        }
    }

    /**
     * @dev Returns the downcasted int112 from int256, reverting on
     * overflow (when the input is less than smallest int112 or
     * greater than largest int112).
     *
     * Counterpart to Solidity's `int112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     */
    function toInt112(int256 value) internal pure returns (int112 downcasted) {
        downcasted = int112(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(112, value);
        }
    }

    /**
     * @dev Returns the downcasted int104 from int256, reverting on
     * overflow (when the input is less than smallest int104 or
     * greater than largest int104).
     *
     * Counterpart to Solidity's `int104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     */
    function toInt104(int256 value) internal pure returns (int104 downcasted) {
        downcasted = int104(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(104, value);
        }
    }

    /**
     * @dev Returns the downcasted int96 from int256, reverting on
     * overflow (when the input is less than smallest int96 or
     * greater than largest int96).
     *
     * Counterpart to Solidity's `int96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     */
    function toInt96(int256 value) internal pure returns (int96 downcasted) {
        downcasted = int96(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(96, value);
        }
    }

    /**
     * @dev Returns the downcasted int88 from int256, reverting on
     * overflow (when the input is less than smallest int88 or
     * greater than largest int88).
     *
     * Counterpart to Solidity's `int88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     */
    function toInt88(int256 value) internal pure returns (int88 downcasted) {
        downcasted = int88(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(88, value);
        }
    }

    /**
     * @dev Returns the downcasted int80 from int256, reverting on
     * overflow (when the input is less than smallest int80 or
     * greater than largest int80).
     *
     * Counterpart to Solidity's `int80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     */
    function toInt80(int256 value) internal pure returns (int80 downcasted) {
        downcasted = int80(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(80, value);
        }
    }

    /**
     * @dev Returns the downcasted int72 from int256, reverting on
     * overflow (when the input is less than smallest int72 or
     * greater than largest int72).
     *
     * Counterpart to Solidity's `int72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     */
    function toInt72(int256 value) internal pure returns (int72 downcasted) {
        downcasted = int72(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(72, value);
        }
    }

    /**
     * @dev Returns the downcasted int64 from int256, reverting on
     * overflow (when the input is less than smallest int64 or
     * greater than largest int64).
     *
     * Counterpart to Solidity's `int64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     */
    function toInt64(int256 value) internal pure returns (int64 downcasted) {
        downcasted = int64(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(64, value);
        }
    }

    /**
     * @dev Returns the downcasted int56 from int256, reverting on
     * overflow (when the input is less than smallest int56 or
     * greater than largest int56).
     *
     * Counterpart to Solidity's `int56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     */
    function toInt56(int256 value) internal pure returns (int56 downcasted) {
        downcasted = int56(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(56, value);
        }
    }

    /**
     * @dev Returns the downcasted int48 from int256, reverting on
     * overflow (when the input is less than smallest int48 or
     * greater than largest int48).
     *
     * Counterpart to Solidity's `int48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     */
    function toInt48(int256 value) internal pure returns (int48 downcasted) {
        downcasted = int48(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(48, value);
        }
    }

    /**
     * @dev Returns the downcasted int40 from int256, reverting on
     * overflow (when the input is less than smallest int40 or
     * greater than largest int40).
     *
     * Counterpart to Solidity's `int40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     */
    function toInt40(int256 value) internal pure returns (int40 downcasted) {
        downcasted = int40(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(40, value);
        }
    }

    /**
     * @dev Returns the downcasted int32 from int256, reverting on
     * overflow (when the input is less than smallest int32 or
     * greater than largest int32).
     *
     * Counterpart to Solidity's `int32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     */
    function toInt32(int256 value) internal pure returns (int32 downcasted) {
        downcasted = int32(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(32, value);
        }
    }

    /**
     * @dev Returns the downcasted int24 from int256, reverting on
     * overflow (when the input is less than smallest int24 or
     * greater than largest int24).
     *
     * Counterpart to Solidity's `int24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     */
    function toInt24(int256 value) internal pure returns (int24 downcasted) {
        downcasted = int24(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(24, value);
        }
    }

    /**
     * @dev Returns the downcasted int16 from int256, reverting on
     * overflow (when the input is less than smallest int16 or
     * greater than largest int16).
     *
     * Counterpart to Solidity's `int16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     */
    function toInt16(int256 value) internal pure returns (int16 downcasted) {
        downcasted = int16(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(16, value);
        }
    }

    /**
     * @dev Returns the downcasted int8 from int256, reverting on
     * overflow (when the input is less than smallest int8 or
     * greater than largest int8).
     *
     * Counterpart to Solidity's `int8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     */
    function toInt8(int256 value) internal pure returns (int8 downcasted) {
        downcasted = int8(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(8, value);
        }
    }

    /**
     * @dev Converts an unsigned uint256 into a signed int256.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxInt256.
     */
    function toInt256(uint256 value) internal pure returns (int256) {
        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
        if (value > uint256(type(int256).max)) {
            revert SafeCastOverflowedUintToInt(value);
        }
        return int256(value);
    }

    /**
     * @dev Cast a boolean (false or true) to a uint256 (0 or 1) with no jump.
     */
    function toUint(bool b) internal pure returns (uint256 u) {
        assembly ("memory-safe") {
            u := iszero(iszero(b))
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/draft-IERC6093.sol)
pragma solidity >=0.8.4;

/**
 * @dev Standard ERC-20 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-20 tokens.
 */
interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

/**
 * @dev Standard ERC-721 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-721 tokens.
 */
interface IERC721Errors {
    /**
     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in ERC-20.
     * Used in balance queries.
     * @param owner Address of the current owner of a token.
     */
    error ERC721InvalidOwner(address owner);

    /**
     * @dev Indicates a `tokenId` whose `owner` is the zero address.
     * @param tokenId Identifier number of a token.
     */
    error ERC721NonexistentToken(uint256 tokenId);

    /**
     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param tokenId Identifier number of a token.
     * @param owner Address of the current owner of a token.
     */
    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC721InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC721InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param tokenId Identifier number of a token.
     */
    error ERC721InsufficientApproval(address operator, uint256 tokenId);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC721InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC721InvalidOperator(address operator);
}

/**
 * @dev Standard ERC-1155 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-1155 tokens.
 */
interface IERC1155Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     * @param tokenId Identifier number of a token.
     */
    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC1155InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC1155InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param owner Address of the current owner of a token.
     */
    error ERC1155MissingApprovalForAll(address operator, address owner);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC1155InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC1155InvalidOperator(address operator);

    /**
     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
     * Used in batch transfers.
     * @param idsLength Length of the array of token identifiers
     * @param valuesLength Length of the array of token amounts
     */
    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC1363.sol)

pragma solidity >=0.6.2;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

/// @title IOracle
/// @author Morpho Labs
/// @custom:contact [email protected]
/// @notice Interface that oracles used by Morpho must implement.
/// @dev It is the user's responsibility to select markets with safe oracles.
interface IOracle {
    /// @notice Returns the price of 1 asset of collateral token quoted in 1 asset of loan token, scaled by 1e36.
    /// @dev It corresponds to the price of 10**(collateral token decimals) assets of collateral token quoted in
    /// 10**(loan token decimals) assets of loan token with `36 + loan token decimals - collateral token decimals`
    /// decimals of precision.
    function price() external view returns (uint256);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

import {IMorpho, Id} from "../../interfaces/IMorpho.sol";
import {MorphoStorageLib} from "./MorphoStorageLib.sol";

/// @title MorphoLib
/// @author Morpho Labs
/// @custom:contact [email protected]
/// @notice Helper library to access Morpho storage variables.
/// @dev Warning: Supply and borrow getters may return outdated values that do not include accrued interest.
library MorphoLib {
    function supplyShares(IMorpho morpho, Id id, address user) internal view returns (uint256) {
        bytes32[] memory slot = _array(MorphoStorageLib.positionSupplySharesSlot(id, user));
        return uint256(morpho.extSloads(slot)[0]);
    }

    function borrowShares(IMorpho morpho, Id id, address user) internal view returns (uint256) {
        bytes32[] memory slot = _array(MorphoStorageLib.positionBorrowSharesAndCollateralSlot(id, user));
        return uint128(uint256(morpho.extSloads(slot)[0]));
    }

    function collateral(IMorpho morpho, Id id, address user) internal view returns (uint256) {
        bytes32[] memory slot = _array(MorphoStorageLib.positionBorrowSharesAndCollateralSlot(id, user));
        return uint256(morpho.extSloads(slot)[0] >> 128);
    }

    function totalSupplyAssets(IMorpho morpho, Id id) internal view returns (uint256) {
        bytes32[] memory slot = _array(MorphoStorageLib.marketTotalSupplyAssetsAndSharesSlot(id));
        return uint128(uint256(morpho.extSloads(slot)[0]));
    }

    function totalSupplyShares(IMorpho morpho, Id id) internal view returns (uint256) {
        bytes32[] memory slot = _array(MorphoStorageLib.marketTotalSupplyAssetsAndSharesSlot(id));
        return uint256(morpho.extSloads(slot)[0] >> 128);
    }

    function totalBorrowAssets(IMorpho morpho, Id id) internal view returns (uint256) {
        bytes32[] memory slot = _array(MorphoStorageLib.marketTotalBorrowAssetsAndSharesSlot(id));
        return uint128(uint256(morpho.extSloads(slot)[0]));
    }

    function totalBorrowShares(IMorpho morpho, Id id) internal view returns (uint256) {
        bytes32[] memory slot = _array(MorphoStorageLib.marketTotalBorrowAssetsAndSharesSlot(id));
        return uint256(morpho.extSloads(slot)[0] >> 128);
    }

    function lastUpdate(IMorpho morpho, Id id) internal view returns (uint256) {
        bytes32[] memory slot = _array(MorphoStorageLib.marketLastUpdateAndFeeSlot(id));
        return uint128(uint256(morpho.extSloads(slot)[0]));
    }

    function fee(IMorpho morpho, Id id) internal view returns (uint256) {
        bytes32[] memory slot = _array(MorphoStorageLib.marketLastUpdateAndFeeSlot(id));
        return uint256(morpho.extSloads(slot)[0] >> 128);
    }

    function _array(bytes32 x) private pure returns (bytes32[] memory) {
        bytes32[] memory res = new bytes32[](1);
        res[0] = x;
        return res;
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

import {MathLib} from "./MathLib.sol";

/// @title SharesMathLib
/// @author Morpho Labs
/// @custom:contact [email protected]
/// @notice Shares management library.
/// @dev This implementation mitigates share price manipulations, using OpenZeppelin's method of virtual shares:
/// https://docs.openzeppelin.com/contracts/4.x/erc4626#inflation-attack.
library SharesMathLib {
    using MathLib for uint256;

    /// @dev The number of virtual shares has been chosen low enough to prevent overflows, and high enough to ensure
    /// high precision computations.
    /// @dev Virtual shares can never be redeemed for the assets they are entitled to, but it is assumed the share price
    /// stays low enough not to inflate these assets to a significant value.
    /// @dev Warning: The assets to which virtual borrow shares are entitled behave like unrealizable bad debt.
    uint256 internal constant VIRTUAL_SHARES = 1e6;

    /// @dev A number of virtual assets of 1 enforces a conversion rate between shares and assets when a market is
    /// empty.
    uint256 internal constant VIRTUAL_ASSETS = 1;

    /// @dev Calculates the value of `assets` quoted in shares, rounding down.
    function toSharesDown(uint256 assets, uint256 totalAssets, uint256 totalShares) internal pure returns (uint256) {
        return assets.mulDivDown(totalShares + VIRTUAL_SHARES, totalAssets + VIRTUAL_ASSETS);
    }

    /// @dev Calculates the value of `shares` quoted in assets, rounding down.
    function toAssetsDown(uint256 shares, uint256 totalAssets, uint256 totalShares) internal pure returns (uint256) {
        return shares.mulDivDown(totalAssets + VIRTUAL_ASSETS, totalShares + VIRTUAL_SHARES);
    }

    /// @dev Calculates the value of `assets` quoted in shares, rounding up.
    function toSharesUp(uint256 assets, uint256 totalAssets, uint256 totalShares) internal pure returns (uint256) {
        return assets.mulDivUp(totalShares + VIRTUAL_SHARES, totalAssets + VIRTUAL_ASSETS);
    }

    /// @dev Calculates the value of `shares` quoted in assets, rounding up.
    function toAssetsUp(uint256 shares, uint256 totalAssets, uint256 totalShares) internal pure returns (uint256) {
        return shares.mulDivUp(totalAssets + VIRTUAL_ASSETS, totalShares + VIRTUAL_SHARES);
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

import {Id, MarketParams} from "../interfaces/IMorpho.sol";

/// @title MarketParamsLib
/// @author Morpho Labs
/// @custom:contact [email protected]
/// @notice Library to convert a market to its id.
library MarketParamsLib {
    /// @notice The length of the data used to compute the id of a market.
    /// @dev The length is 5 * 32 because `MarketParams` has 5 variables of 32 bytes each.
    uint256 internal constant MARKET_PARAMS_BYTES_LENGTH = 5 * 32;

    /// @notice Returns the id of the market `marketParams`.
    function id(MarketParams memory marketParams) internal pure returns (Id marketParamsId) {
        assembly ("memory-safe") {
            marketParamsId := keccak256(marketParams, MARKET_PARAMS_BYTES_LENGTH)
        }
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

import {Id, MarketParams, Market, IMorpho} from "../../interfaces/IMorpho.sol";
import {IIrm} from "../../interfaces/IIrm.sol";

import {MathLib} from "../MathLib.sol";
import {UtilsLib} from "../UtilsLib.sol";
import {MorphoLib} from "./MorphoLib.sol";
import {SharesMathLib} from "../SharesMathLib.sol";
import {MarketParamsLib} from "../MarketParamsLib.sol";

/// @title MorphoBalancesLib
/// @author Morpho Labs
/// @custom:contact [email protected]
/// @notice Helper library exposing getters with the expected value after interest accrual.
/// @dev This library is not used in Morpho itself and is intended to be used by integrators.
/// @dev The getter to retrieve the expected total borrow shares is not exposed because interest accrual does not apply
/// to it. The value can be queried directly on Morpho using `totalBorrowShares`.
library MorphoBalancesLib {
    using MathLib for uint256;
    using MathLib for uint128;
    using UtilsLib for uint256;
    using MorphoLib for IMorpho;
    using SharesMathLib for uint256;
    using MarketParamsLib for MarketParams;

    /// @notice Returns the expected market balances of a market after having accrued interest.
    /// @return The expected total supply assets.
    /// @return The expected total supply shares.
    /// @return The expected total borrow assets.
    /// @return The expected total borrow shares.
    function expectedMarketBalances(IMorpho morpho, MarketParams memory marketParams)
        internal
        view
        returns (uint256, uint256, uint256, uint256)
    {
        Id id = marketParams.id();
        Market memory market = morpho.market(id);

        uint256 elapsed = block.timestamp - market.lastUpdate;

        // Skipped if elapsed == 0 or totalBorrowAssets == 0 because interest would be null, or if irm == address(0).
        if (elapsed != 0 && market.totalBorrowAssets != 0 && marketParams.irm != address(0)) {
            uint256 borrowRate = IIrm(marketParams.irm).borrowRateView(marketParams, market);
            uint256 interest = market.totalBorrowAssets.wMulDown(borrowRate.wTaylorCompounded(elapsed));
            market.totalBorrowAssets += interest.toUint128();
            market.totalSupplyAssets += interest.toUint128();

            if (market.fee != 0) {
                uint256 feeAmount = interest.wMulDown(market.fee);
                // The fee amount is subtracted from the total supply in this calculation to compensate for the fact
                // that total supply is already updated.
                uint256 feeShares =
                    feeAmount.toSharesDown(market.totalSupplyAssets - feeAmount, market.totalSupplyShares);
                market.totalSupplyShares += feeShares.toUint128();
            }
        }

        return (market.totalSupplyAssets, market.totalSupplyShares, market.totalBorrowAssets, market.totalBorrowShares);
    }

    /// @notice Returns the expected total supply assets of a market after having accrued interest.
    function expectedTotalSupplyAssets(IMorpho morpho, MarketParams memory marketParams)
        internal
        view
        returns (uint256 totalSupplyAssets)
    {
        (totalSupplyAssets,,,) = expectedMarketBalances(morpho, marketParams);
    }

    /// @notice Returns the expected total borrow assets of a market after having accrued interest.
    function expectedTotalBorrowAssets(IMorpho morpho, MarketParams memory marketParams)
        internal
        view
        returns (uint256 totalBorrowAssets)
    {
        (,, totalBorrowAssets,) = expectedMarketBalances(morpho, marketParams);
    }

    /// @notice Returns the expected total supply shares of a market after having accrued interest.
    function expectedTotalSupplyShares(IMorpho morpho, MarketParams memory marketParams)
        internal
        view
        returns (uint256 totalSupplyShares)
    {
        (, totalSupplyShares,,) = expectedMarketBalances(morpho, marketParams);
    }

    /// @notice Returns the expected supply assets balance of `user` on a market after having accrued interest.
    /// @dev Warning: Wrong for `feeRecipient` because their supply shares increase is not taken into account.
    function expectedSupplyAssets(IMorpho morpho, MarketParams memory marketParams, address user)
        internal
        view
        returns (uint256)
    {
        Id id = marketParams.id();
        uint256 supplyShares = morpho.supplyShares(id, user);
        (uint256 totalSupplyAssets, uint256 totalSupplyShares,,) = expectedMarketBalances(morpho, marketParams);

        return supplyShares.toAssetsDown(totalSupplyAssets, totalSupplyShares);
    }

    /// @notice Returns the expected borrow assets balance of `user` on a market after having accrued interest.
    /// @dev Warning: The expected balance is rounded up, so it may be greater than the market's expected total borrow
    /// assets.
    function expectedBorrowAssets(IMorpho morpho, MarketParams memory marketParams, address user)
        internal
        view
        returns (uint256)
    {
        Id id = marketParams.id();
        uint256 borrowShares = morpho.borrowShares(id, user);
        (,, uint256 totalBorrowAssets, uint256 totalBorrowShares) = expectedMarketBalances(morpho, marketParams);

        return borrowShares.toAssetsUp(totalBorrowAssets, totalBorrowShares);
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

/// @dev The maximum fee a market can have (25%).
uint256 constant MAX_FEE = 0.25e18;

/// @dev Oracle price scale.
uint256 constant ORACLE_PRICE_SCALE = 1e36;

/// @dev Liquidation cursor.
uint256 constant LIQUIDATION_CURSOR = 0.3e18;

/// @dev Max liquidation incentive factor.
uint256 constant MAX_LIQUIDATION_INCENTIVE_FACTOR = 1.15e18;

/// @dev The EIP-712 typeHash for EIP712Domain.
bytes32 constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(uint256 chainId,address verifyingContract)");

/// @dev The EIP-712 typeHash for Authorization.
bytes32 constant AUTHORIZATION_TYPEHASH =
    keccak256("Authorization(address authorizer,address authorized,bool isAuthorized,uint256 nonce,uint256 deadline)");

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { IMorpho, MarketParams } from "@morpho-blue/src/interfaces/IMorpho.sol";

import { IPriceFeed } from "../../../../../interfaces/shared/IPriceFeed.sol";
import { IMorphoCommons } from "../../../../../interfaces/positions/BorrowLending/IMorphoCommons.sol";
import { IFlashLoanUtils } from "../../../../../interfaces/positions/BorrowLending/IFlashLoanUtils.sol";

import { ZeroAddress } from "../../../../../utils/Helpers.sol";

abstract contract BaseMorphoCommons is IMorphoCommons, IFlashLoanUtils {
    error PreviewRiskExceeded();

    bytes32 constant MORPHO_STORAGE_POSITION = keccak256("morpho.commons.storage") & ~bytes32(uint256(0xff));

    function _getMorphoCommonsConfig() internal view virtual returns (MorphoStrategyConfig memory) {
        MorphoCommonsStorage memory morphoCommons = _getMorphoCommonsStorage();
        address priceFeed = address(_getBorrowLendingStorage().priceFeed);

        return MorphoStrategyConfig({ morphoCommons: morphoCommons, priceFeed: priceFeed });
    }

    function _setMorphoCommonsStorage(MorphoStrategyConfig memory config) internal virtual {
        MorphoCommonsStorage storage s = _getMorphoCommonsStorage();

        if (address(config.morphoCommons.morpho) == address(0)) revert ZeroAddress();
        if (config.priceFeed == address(0)) revert ZeroAddress();

        s.marketParams = config.morphoCommons.marketParams;
        s.morpho = config.morphoCommons.morpho;

        _setBorrowLendingStorage(
            BorrowLendingUtilStorage({
                borrowToken: config.morphoCommons.marketParams.loanToken,
                collateralToken: config.morphoCommons.marketParams.collateralToken,
                priceFeed: IPriceFeed(config.priceFeed)
            })
        );
    }

    function _getMorphoCommonsStorage() internal pure virtual returns (MorphoCommonsStorage storage s) {
        bytes32 slot = MORPHO_STORAGE_POSITION;
        assembly {
            s.slot := slot
        }
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { IBorrowLendingUtils } from "./IBorrowLendingUtils.sol";

/// @dev Flash Loan Utility
abstract contract IFlashLoanUtils is IBorrowLendingUtils {
    function _onFlashLoan(uint256 assets, bytes memory data) internal virtual;

    /// @dev Use this function to payback complete borrowed amount
    function _repayAll(address user, uint256 amount, address repayRecipent) internal virtual returns (uint256);
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { Address } from "@openzeppelin/contracts/utils/Address.sol";
import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";

import { IVersionedVaultUtils } from "../../../interfaces/positions/IVaultStrategy.sol";

import { PermissionDenied, ZeroAddress } from "../../../utils/Helpers.sol";

/// @notice Stores version, deep copy and auto increment logic for the strategy
abstract contract VersionedVaultUtils is IVersionedVaultUtils, Ownable {
    event PositionManagerUpdated(address sender, address newPositionManager, uint256 newVersion);

    bytes32 constant VAULT_STRATEGY_STORAGE_POSITION = keccak256("vault.strategy.storage") & ~bytes32(uint256(0xff));
    bytes32 constant CALLER_INFO_STORAGE_POSITION = keccak256("caller.info.storage") & ~bytes32(uint256(0xff));

    modifier onlyPositionManager() {
        if (msg.sender != _getVaultStrategyStorage().positionManager) revert PermissionDenied();
        _;
    }

    modifier onlyDelegate() {
        if (address(this) == _getCallerInfoStorage().self) revert PermissionDenied();
        _;
    }

    function getConfig() external view returns (VaultStrategyStorage memory) {
        VaultStrategyStorage memory config = _getVaultStrategyStorage();
        return config;
    }

    function updatePositionManager(address newPositionManager) external onlyOwner {
        if (newPositionManager == address(0)) revert ZeroAddress();

        VaultStrategyStorage storage s = _getVaultStrategyStorage();
        s.positionManager = newPositionManager;
        s.version += 1;

        emit PositionManagerUpdated(msg.sender, newPositionManager, s.version);
    }

    function _initVersionedVaultStrategyStorage(address positionManager) internal {
        if (positionManager == address(0)) revert ZeroAddress();

        VaultStrategyStorage storage s = _getVaultStrategyStorage();
        CallerInfoStorage storage c = _getCallerInfoStorage();

        s.version = 1;
        s.positionManager = positionManager;

        c.self = address(this);
    }

    function _setVaultStrategyStorage(VaultStrategyStorage memory config) internal {
        VaultStrategyStorage storage s = _getVaultStrategyStorage();
        s.version = config.version;
        s.positionManager = config.positionManager;
    }

    function _getVaultStrategyStorage() internal pure returns (VaultStrategyStorage storage s) {
        bytes32 slot = VAULT_STRATEGY_STORAGE_POSITION;
        assembly {
            s.slot := slot
        }
    }

    function _getCallerInfoStorage() internal pure returns (CallerInfoStorage storage s) {
        bytes32 slot = CALLER_INFO_STORAGE_POSITION;
        assembly {
            s.slot := slot
        }
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { Math } from "@openzeppelin/contracts/utils/math/Math.sol";
import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import { ILoopingUtil } from "../../../../../interfaces/positions/ILoopingUtil.sol";
import { IVaultManager } from "../../../../../interfaces/positions/IVaultManager.sol";
import { IVaultStrategy } from "../../../../../interfaces/positions/IVaultStrategy.sol";
import { DepositActionParams, WithdrawActionParams } from "../../../../../interfaces/positions/ILoopingInternals.sol";

import { Constants } from "../../../../../positions/Constants.sol";

import { BaseLoopingFlashLoanablePreviewUtils } from "./BaseLoopingFlashLoanablePreviewUtils.sol";

abstract contract BaseLoopingFlashLoanableUtils is BaseLoopingFlashLoanablePreviewUtils {
    /// @notice to be called when user deposits into the vault for first time
    /// @param user address of the user on behalf of whom deposit takes place
    /// @param _tokenAddress address of input token (hemiBTC, bfBTC)
    /// @param _value value of deposit token
    /// @param actionParams action parameters for the deposit
    /// @param swapCalldata swap calldata for the flash loan
    function _initialDeposit(
        address user,
        address _tokenAddress,
        uint256 _value,
        DepositActionParams memory actionParams,
        bytes memory swapCalldata
    )
        internal
        virtual
    {
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();
        BorrowLendingUtilStorage memory b = _getBorrowLendingStorage();

        DepositCoreParams memory coreParams = DepositCoreParams({
            borrowToken: b.borrowToken, collateralToken: b.collateralToken, loopingUtil: s.loopingUtil
        });

        DepositResult memory result = _deposit(
            DepositParams(
                user,
                _tokenAddress,
                _value,
                actionParams.flashLoanAmount,
                actionParams.minCollateralSharesAfterSlippage,
                true
            ),
            swapCalldata
        );

        coreParams.loopingUtil.onDeposit(result.collateralAdded, result.amountBorrowed);

        emit InitialDeposit(
            user,
            result.leverageInWAD,
            _tokenAddress,
            _value,
            address(coreParams.collateralToken),
            0,
            result.collateralAdded,
            coreParams.borrowToken,
            0,
            result.amountBorrowed
        );
    }

    /// @notice called in any subsequent deposits, in cases where user wants to add more to their position
    /// @dev since the deposit is made in ratios at the time of position creation, the weights remain unchanged
    /// @param user address of the user on behalf of whom deposit takes place
    /// @param _tokenAddress address of input token (hemiBTC, bfBTC)
    /// @param _value value of deposit token
    /// @param actionParams action parameters for the deposit
    /// @param swapCalldata swap calldata for the flash loan
    /// used to assert leverage is not reduced beyond the slippage
    function _standardDeposit(
        address user,
        address _tokenAddress,
        uint256 _value,
        DepositActionParams memory actionParams,
        bytes memory swapCalldata
    )
        internal
        virtual
    {
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();
        BorrowLendingUtilStorage memory b = _getBorrowLendingStorage();

        DepositCoreParams memory coreParams = DepositCoreParams({
            borrowToken: b.borrowToken, collateralToken: b.collateralToken, loopingUtil: s.loopingUtil
        });

        StandardDepositBalances memory balances = StandardDepositBalances({
            preDepositCollateral: collateralBalance(user), preDepositBorrow: borrowBalance(user)
        });

        DepositResult memory result = _deposit(
            DepositParams(
                user,
                _tokenAddress,
                _value,
                actionParams.flashLoanAmount,
                actionParams.minCollateralSharesAfterSlippage,
                false
            ),
            swapCalldata
        );

        coreParams.loopingUtil.onDeposit(result.collateralAdded, result.amountBorrowed);
        emit StandardDeposit(
            user,
            _tokenAddress,
            _value,
            address(coreParams.collateralToken),
            balances.preDepositCollateral,
            result.collateralAdded,
            coreParams.borrowToken,
            balances.preDepositBorrow,
            result.amountBorrowed
        );
    }

    /// @notice used to withdraw some funds from the position
    /// @param user address of the user on behalf of whom withdrawal takes place
    /// @param _value value of PT shares to be withdrawn
    /// @param actionParams action parameters for the withdrawal
    /// used to assert leverage is not reduced beyond the slippage
    function _standardWithdraw(
        address user,
        uint256 _value,
        IVaultManager.VaultStrategyConfig calldata userConfig,
        WithdrawActionParams memory actionParams,
        bytes memory swapCalldata
    )
        internal
    {
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();
        BorrowLendingUtilStorage memory b = _getBorrowLendingStorage();

        StandardWithdrawCoreParams memory coreParams = StandardWithdrawCoreParams({
            borrowToken: b.borrowToken,
            collateralToken: b.collateralToken,
            primaryDepositToken: s.primaryDepositToken,
            loopingUtil: s.loopingUtil
        });

        uint256 totalBorrow = borrowBalance(user);
        uint256 totalCollateral = collateralBalance(user);

        // encode the flash loan calldata
        bytes memory data = abi.encode(
            user,
            Constants.TRANSACTION_CODE_FLASH_LOAN_WITHDRAW,
            address(0),
            actionParams.collateralToBePulled,
            abi.encode(swapCalldata)
        );

        WithdrawResult memory withdrawResult;
        if (actionParams.flashLoanAmount > 0) {
            _onFlashLoan(actionParams.flashLoanAmount, data);
            withdrawResult.sharesReceivedInPrimaryDepositToken = ERC20(coreParams.primaryDepositToken).balanceOf(user);
            if (coreParams.borrowToken != coreParams.primaryDepositToken) {
                withdrawResult.sharesReceivedInBorrowToken = ERC20(coreParams.borrowToken).balanceOf(user);
            }
        } else {
            withdrawResult.sharesReceivedInPrimaryDepositToken = _pullAndSwapCollateral(user, _value, swapCalldata);
        }

        if (withdrawResult.sharesReceivedInPrimaryDepositToken < actionParams.minSharesReceivedInPrimaryDepositToken) {
            revert SlippageExceeded();
        }
        if (withdrawResult.sharesReceivedInBorrowToken < actionParams.minSharesReceivedInBorrowToken) {
            revert SlippageExceeded();
        }

        SafeERC20.safeTransfer(
            IERC20(coreParams.primaryDepositToken), userConfig.user, withdrawResult.sharesReceivedInPrimaryDepositToken
        );

        if (coreParams.borrowToken != coreParams.primaryDepositToken) {
            SafeERC20.safeTransfer(
                IERC20(coreParams.borrowToken), userConfig.user, withdrawResult.sharesReceivedInBorrowToken
            );
        }

        coreParams.loopingUtil.onWithdraw(totalCollateral - collateralBalance(user), totalBorrow - borrowBalance(user));
        emit StandardWithdraw(
            user,
            address(coreParams.collateralToken),
            _value,
            address(coreParams.collateralToken),
            totalCollateral,
            coreParams.borrowToken,
            totalBorrow,
            withdrawResult.sharesReceivedInBorrowToken,
            coreParams.primaryDepositToken,
            withdrawResult.sharesReceivedInPrimaryDepositToken
        );
    }

    /// @notice used to withdraw all the funds from the position
    /// @param user address of the user on behalf of whom withdrawal takes place
    /// @param actionParams action parameters for the withdrawal
    function _withdrawAll(
        address user,
        IVaultManager.VaultStrategyConfig calldata userConfig,
        WithdrawActionParams memory actionParams,
        bytes memory swapCalldata
    )
        internal
    {
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();
        BorrowLendingUtilStorage memory b = _getBorrowLendingStorage();

        WithdrawAllCoreParams memory coreParams = WithdrawAllCoreParams({
            borrowToken: b.borrowToken,
            collateralToken: b.collateralToken,
            primaryDepositToken: s.primaryDepositToken,
            loopingUtil: s.loopingUtil
        });

        uint256 totalBorrow = borrowBalance(user);
        uint256 totalCollateral = collateralBalance(user);

        // encode the flash loan calldata
        bytes memory data = abi.encode(
            user,
            Constants.TRANSACTION_CODE_FLASH_LOAN_WITHDRAW_ALL,
            address(0),
            actionParams.collateralToBePulled,
            abi.encode(swapCalldata)
        );

        WithdrawResult memory withdrawResult;
        if (totalBorrow > 0) {
            _onFlashLoan(totalBorrow, data);
            withdrawResult.sharesReceivedInPrimaryDepositToken = ERC20(coreParams.primaryDepositToken).balanceOf(user);
            if (coreParams.borrowToken != coreParams.primaryDepositToken) {
                withdrawResult.sharesReceivedInBorrowToken = ERC20(coreParams.borrowToken).balanceOf(user);
            }
        } else {
            withdrawResult.sharesReceivedInPrimaryDepositToken =
                _pullAndSwapCollateral(user, totalCollateral, swapCalldata);
        }

        if (withdrawResult.sharesReceivedInPrimaryDepositToken < actionParams.minSharesReceivedInPrimaryDepositToken) {
            revert SlippageExceeded();
        }
        if (withdrawResult.sharesReceivedInBorrowToken < actionParams.minSharesReceivedInBorrowToken) {
            revert SlippageExceeded();
        }

        if (borrowBalance(user) > 0 || collateralBalance(user) > 0) {
            revert InsufficientWithdrawalLiquidity();
        }

        SafeERC20.safeTransfer(
            IERC20(coreParams.primaryDepositToken), userConfig.user, withdrawResult.sharesReceivedInPrimaryDepositToken
        );

        if (coreParams.borrowToken != coreParams.primaryDepositToken) {
            SafeERC20.safeTransfer(
                IERC20(coreParams.borrowToken), userConfig.user, withdrawResult.sharesReceivedInBorrowToken
            );
        }

        coreParams.loopingUtil.onWithdraw(totalCollateral, totalBorrow);
        emit WithdrawAll(
            user,
            address(coreParams.collateralToken),
            0,
            address(coreParams.collateralToken),
            totalCollateral,
            coreParams.borrowToken,
            totalBorrow,
            withdrawResult.sharesReceivedInBorrowToken,
            coreParams.primaryDepositToken,
            withdrawResult.sharesReceivedInPrimaryDepositToken
        );
    }

    /// @return (ptSharesBoughtOnDeposit, collateralAdded, amountBorrowed)
    function _deposit(DepositParams memory params, bytes memory swapCalldata) private returns (DepositResult memory) {
        uint256 totalCurrentCollateral = collateralBalance(params.user);

        if (params.isInitial && totalCurrentCollateral > 0) revert InitialDepositAlreadyMade();

        // encode the flash loan calldata
        bytes memory data = abi.encode(
            params.user,
            Constants.TRANSACTION_CODE_FLASH_LOAN_DEPOSIT,
            params._tokenAddress,
            params._value,
            abi.encode(params.isInitial, swapCalldata)
        );

        if (params._flashLoanAmount > 0) _onFlashLoan(params._flashLoanAmount, data);
        else _depositWithoutFlashLoan(params.user, params._tokenAddress, params._value, params.isInitial);

        uint256 leverageInWAD = _getLeverage(params.user);
        uint256 collateralAdded = collateralBalance(params.user) - totalCurrentCollateral;

        // Compute slippage bounds and return value
        if (collateralAdded < params._leastCollateralSharesAfterSlippage) revert SlippageExceeded();

        return DepositResult(leverageInWAD, collateralAdded, params._flashLoanAmount);
    }

    function _depositWithoutFlashLoan(
        address user,
        address _tokenAddress,
        uint256 _value,
        bool isInitial
    )
        internal
        returns (uint256)
    {
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();
        ILoopingUtil loopingUtil = s.loopingUtil;

        uint256 collateralShares = _swapDepositToCollateral(user, _tokenAddress, _value, 0);
        (uint256 collateralAdded,) = _drawDebt(user, collateralShares, 0);
        if (isInitial) {
            loopingUtil.pushWeightInfo(user, 0, collateralShares);
        }
        return collateralAdded;
    }

    /// @dev Add flash loan to collateral and pull flash loan equivalent amount from portfolio
    function _onFlashLoanForDeposit(
        address user,
        uint256 flashLoanValue,
        address tokenAddress,
        uint256 _value,
        bytes memory swapCalldata,
        bool isInitial
    )
        internal
    {
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();
        ILoopingUtil loopingUtil = s.loopingUtil;

        FlashLoanDepositCalculations memory calc = FlashLoanDepositCalculations({
            primaryDepositTokenShares: _swapBorrowToPrimaryDepositToken(user, flashLoanValue, 0, swapCalldata),
            collateralShares: 0,
            initialShares: 0
        });

        if (tokenAddress == s.primaryDepositToken) {
            calc.collateralShares =
                _swapDepositToCollateral(user, tokenAddress, _value + calc.primaryDepositTokenShares, 0);
            calc.initialShares = Math.mulDiv(calc.collateralShares, _value, _value + calc.primaryDepositTokenShares);
        } else {
            calc.collateralShares = _swapDepositToCollateral(user, tokenAddress, _value, 0);
            calc.initialShares = calc.collateralShares;
            calc.collateralShares += _swapDepositToCollateral(
                user, s.primaryDepositToken, calc.primaryDepositTokenShares, 0
            );
        }

        _drawDebt(user, calc.collateralShares, flashLoanValue);

        if (isInitial) {
            loopingUtil.pushWeightInfo(user, flashLoanValue, calc.initialShares);
            loopingUtil.pushWeightInfo(user, 0, calc.collateralShares - calc.initialShares);
        }
    }

    function _pullAndSwapCollateral(
        address user,
        uint256 collateralToBePulled,
        bytes memory swapCalldata
    )
        internal
        returns (uint256)
    {
        (uint256 collateralPulled,) = _repayDebt(user, collateralToBePulled, 0, user);
        return _swapCollateralToPrimaryDepositToken(user, collateralPulled, 0, swapCalldata);
    }

    /// @dev Use flash loan to repay borrow and pull collateral from portfolio
    function _onFlashLoanForStandardWithdrawal(
        address user,
        uint256 collateralToBePulled,
        uint256 flashLoanValue,
        bytes memory swapCalldata
    )
        internal
    {
        _repayDebt(user, collateralToBePulled, flashLoanValue, user);

        // Swap the collateral to borrow token for flash loan to be repaid back
        _swapCollateralToBorrow(user, collateralToBePulled, flashLoanValue, swapCalldata);
    }

    /// @dev Use flash loan to repay borrow and pull collateral from portfolio
    function _onFlashLoanForWithdrawAll(address user, uint256 flashLoanValue, bytes memory swapCalldata) internal {
        uint256 collateralToPull = collateralBalance(user);

        // Repay complete debt with flash loan
        uint256 borrowRepaid = _repayAll(user, flashLoanValue, user);

        // Pull complete collateral balance
        _repayDebt(user, collateralToPull, 0, user);

        // Swap the collateral to borrow token for flash loan to be repaid back
        _swapCollateralToBorrow(user, collateralToPull, borrowRepaid, swapCalldata);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC20.sol)

pragma solidity >=0.4.16;

import {IERC20} from "../token/ERC20/IERC20.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC165.sol)

pragma solidity >=0.4.16;

import {IERC165} from "../utils/introspection/IERC165.sol";

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

import {Id} from "../../interfaces/IMorpho.sol";

/// @title MorphoStorageLib
/// @author Morpho Labs
/// @custom:contact [email protected]
/// @notice Helper library exposing getters to access Morpho storage variables' slot.
/// @dev This library is not used in Morpho itself and is intended to be used by integrators.
library MorphoStorageLib {
    /* SLOTS */

    uint256 internal constant OWNER_SLOT = 0;
    uint256 internal constant FEE_RECIPIENT_SLOT = 1;
    uint256 internal constant POSITION_SLOT = 2;
    uint256 internal constant MARKET_SLOT = 3;
    uint256 internal constant IS_IRM_ENABLED_SLOT = 4;
    uint256 internal constant IS_LLTV_ENABLED_SLOT = 5;
    uint256 internal constant IS_AUTHORIZED_SLOT = 6;
    uint256 internal constant NONCE_SLOT = 7;
    uint256 internal constant ID_TO_MARKET_PARAMS_SLOT = 8;

    /* SLOT OFFSETS */

    uint256 internal constant LOAN_TOKEN_OFFSET = 0;
    uint256 internal constant COLLATERAL_TOKEN_OFFSET = 1;
    uint256 internal constant ORACLE_OFFSET = 2;
    uint256 internal constant IRM_OFFSET = 3;
    uint256 internal constant LLTV_OFFSET = 4;

    uint256 internal constant SUPPLY_SHARES_OFFSET = 0;
    uint256 internal constant BORROW_SHARES_AND_COLLATERAL_OFFSET = 1;

    uint256 internal constant TOTAL_SUPPLY_ASSETS_AND_SHARES_OFFSET = 0;
    uint256 internal constant TOTAL_BORROW_ASSETS_AND_SHARES_OFFSET = 1;
    uint256 internal constant LAST_UPDATE_AND_FEE_OFFSET = 2;

    /* GETTERS */

    function ownerSlot() internal pure returns (bytes32) {
        return bytes32(OWNER_SLOT);
    }

    function feeRecipientSlot() internal pure returns (bytes32) {
        return bytes32(FEE_RECIPIENT_SLOT);
    }

    function positionSupplySharesSlot(Id id, address user) internal pure returns (bytes32) {
        return bytes32(
            uint256(keccak256(abi.encode(user, keccak256(abi.encode(id, POSITION_SLOT))))) + SUPPLY_SHARES_OFFSET
        );
    }

    function positionBorrowSharesAndCollateralSlot(Id id, address user) internal pure returns (bytes32) {
        return bytes32(
            uint256(keccak256(abi.encode(user, keccak256(abi.encode(id, POSITION_SLOT)))))
                + BORROW_SHARES_AND_COLLATERAL_OFFSET
        );
    }

    function marketTotalSupplyAssetsAndSharesSlot(Id id) internal pure returns (bytes32) {
        return bytes32(uint256(keccak256(abi.encode(id, MARKET_SLOT))) + TOTAL_SUPPLY_ASSETS_AND_SHARES_OFFSET);
    }

    function marketTotalBorrowAssetsAndSharesSlot(Id id) internal pure returns (bytes32) {
        return bytes32(uint256(keccak256(abi.encode(id, MARKET_SLOT))) + TOTAL_BORROW_ASSETS_AND_SHARES_OFFSET);
    }

    function marketLastUpdateAndFeeSlot(Id id) internal pure returns (bytes32) {
        return bytes32(uint256(keccak256(abi.encode(id, MARKET_SLOT))) + LAST_UPDATE_AND_FEE_OFFSET);
    }

    function isIrmEnabledSlot(address irm) internal pure returns (bytes32) {
        return keccak256(abi.encode(irm, IS_IRM_ENABLED_SLOT));
    }

    function isLltvEnabledSlot(uint256 lltv) internal pure returns (bytes32) {
        return keccak256(abi.encode(lltv, IS_LLTV_ENABLED_SLOT));
    }

    function isAuthorizedSlot(address authorizer, address authorizee) internal pure returns (bytes32) {
        return keccak256(abi.encode(authorizee, keccak256(abi.encode(authorizer, IS_AUTHORIZED_SLOT))));
    }

    function nonceSlot(address authorizer) internal pure returns (bytes32) {
        return keccak256(abi.encode(authorizer, NONCE_SLOT));
    }

    function idToLoanTokenSlot(Id id) internal pure returns (bytes32) {
        return bytes32(uint256(keccak256(abi.encode(id, ID_TO_MARKET_PARAMS_SLOT))) + LOAN_TOKEN_OFFSET);
    }

    function idToCollateralTokenSlot(Id id) internal pure returns (bytes32) {
        return bytes32(uint256(keccak256(abi.encode(id, ID_TO_MARKET_PARAMS_SLOT))) + COLLATERAL_TOKEN_OFFSET);
    }

    function idToOracleSlot(Id id) internal pure returns (bytes32) {
        return bytes32(uint256(keccak256(abi.encode(id, ID_TO_MARKET_PARAMS_SLOT))) + ORACLE_OFFSET);
    }

    function idToIrmSlot(Id id) internal pure returns (bytes32) {
        return bytes32(uint256(keccak256(abi.encode(id, ID_TO_MARKET_PARAMS_SLOT))) + IRM_OFFSET);
    }

    function idToLltvSlot(Id id) internal pure returns (bytes32) {
        return bytes32(uint256(keccak256(abi.encode(id, ID_TO_MARKET_PARAMS_SLOT))) + LLTV_OFFSET);
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

uint256 constant WAD = 1e18;

/// @title MathLib
/// @author Morpho Labs
/// @custom:contact [email protected]
/// @notice Library to manage fixed-point arithmetic.
library MathLib {
    /// @dev Returns (`x` * `y`) / `WAD` rounded down.
    function wMulDown(uint256 x, uint256 y) internal pure returns (uint256) {
        return mulDivDown(x, y, WAD);
    }

    /// @dev Returns (`x` * `WAD`) / `y` rounded down.
    function wDivDown(uint256 x, uint256 y) internal pure returns (uint256) {
        return mulDivDown(x, WAD, y);
    }

    /// @dev Returns (`x` * `WAD`) / `y` rounded up.
    function wDivUp(uint256 x, uint256 y) internal pure returns (uint256) {
        return mulDivUp(x, WAD, y);
    }

    /// @dev Returns (`x` * `y`) / `d` rounded down.
    function mulDivDown(uint256 x, uint256 y, uint256 d) internal pure returns (uint256) {
        return (x * y) / d;
    }

    /// @dev Returns (`x` * `y`) / `d` rounded up.
    function mulDivUp(uint256 x, uint256 y, uint256 d) internal pure returns (uint256) {
        return (x * y + (d - 1)) / d;
    }

    /// @dev Returns the sum of the first three non-zero terms of a Taylor expansion of e^(nx) - 1, to approximate a
    /// continuous compound interest rate.
    function wTaylorCompounded(uint256 x, uint256 n) internal pure returns (uint256) {
        uint256 firstTerm = x * n;
        uint256 secondTerm = mulDivDown(firstTerm, firstTerm, 2 * WAD);
        uint256 thirdTerm = mulDivDown(secondTerm, firstTerm, 3 * WAD);

        return firstTerm + secondTerm + thirdTerm;
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

import {MarketParams, Market} from "./IMorpho.sol";

/// @title IIrm
/// @author Morpho Labs
/// @custom:contact [email protected]
/// @notice Interface that Interest Rate Models (IRMs) used by Morpho must implement.
interface IIrm {
    /// @notice Returns the borrow rate per second (scaled by WAD) of the market `marketParams`.
    /// @dev Assumes that `market` corresponds to `marketParams`.
    function borrowRate(MarketParams memory marketParams, Market memory market) external returns (uint256);

    /// @notice Returns the borrow rate per second (scaled by WAD) of the market `marketParams` without modifying any
    /// storage.
    /// @dev Assumes that `market` corresponds to `marketParams`.
    function borrowRateView(MarketParams memory marketParams, Market memory market) external view returns (uint256);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

import {ErrorsLib} from "../libraries/ErrorsLib.sol";

/// @title UtilsLib
/// @author Morpho Labs
/// @custom:contact [email protected]
/// @notice Library exposing helpers.
/// @dev Inspired by https://github.com/morpho-org/morpho-utils.
library UtilsLib {
    /// @dev Returns true if there is exactly one zero among `x` and `y`.
    function exactlyOneZero(uint256 x, uint256 y) internal pure returns (bool z) {
        assembly {
            z := xor(iszero(x), iszero(y))
        }
    }

    /// @dev Returns the min of `x` and `y`.
    function min(uint256 x, uint256 y) internal pure returns (uint256 z) {
        assembly {
            z := xor(x, mul(xor(x, y), lt(y, x)))
        }
    }

    /// @dev Returns `x` safely cast to uint128.
    function toUint128(uint256 x) internal pure returns (uint128) {
        require(x <= type(uint128).max, ErrorsLib.MAX_UINT128_EXCEEDED);
        return uint128(x);
    }

    /// @dev Returns max(0, x - y).
    function zeroFloorSub(uint256 x, uint256 y) internal pure returns (uint256 z) {
        assembly {
            z := mul(gt(x, y), sub(x, y))
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (utils/Address.sol)

pragma solidity ^0.8.20;

import {Errors} from "./Errors.sol";

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert Errors.InsufficientBalance(address(this).balance, amount);
        }

        (bool success, bytes memory returndata) = recipient.call{value: amount}("");
        if (!success) {
            _revert(returndata);
        }
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {Errors.FailedCall} error.
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert Errors.InsufficientBalance(address(this).balance, value);
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {Errors.FailedCall}) in case
     * of an unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {Errors.FailedCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {Errors.FailedCall}.
     */
    function _revert(bytes memory returndata) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            assembly ("memory-safe") {
                revert(add(returndata, 0x20), mload(returndata))
            }
        } else {
            revert Errors.FailedCall();
        }
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.28;

import { Math } from "@openzeppelin/contracts/utils/math/Math.sol";
import { IPriceFeed } from "../../../../../interfaces/shared/IPriceFeed.sol";
import {
    InitialDepositEstimateResult,
    StandardDepositEstimateResult,
    StandardWithdrawEstimateResult,
    WithdrawAllEstimateResult
} from "../../../../../interfaces/positions/ILoopingInternals.sol";

import { ILoopingUtil } from "../../../../../interfaces/positions/ILoopingUtil.sol";
import { IVaultStrategy } from "../../../../../interfaces/positions/IVaultStrategy.sol";

import { Constants } from "../../../../../positions/Constants.sol";

import { BaseLoopingFlashLoanableCommon } from "./BaseLoopingFlashLoanableCommon.sol";

abstract contract BaseLoopingFlashLoanablePreviewUtils is BaseLoopingFlashLoanableCommon {
    function _previewInitialDeposit(
        address _tokenAddress,
        uint256 value,
        uint256 leverageInWAD
    )
        internal
        view
        returns (InitialDepositEstimateResult memory)
    {
        return _previewDeposit(_tokenAddress, value, 0, 0, leverageInWAD);
    }

    function _previewStandardDeposit(
        address user,
        address _tokenAddress,
        uint256 value
    )
        internal
        view
        returns (StandardDepositEstimateResult memory)
    {
        uint256 leverageInWAD = _getLeverage(user);
        uint256 initialCollateral = collateralBalance(user);
        uint256 totalBorrow = borrowBalance(user);

        InitialDepositEstimateResult memory result =
            _previewDeposit(_tokenAddress, value, totalBorrow, initialCollateral, leverageInWAD);

        StandardDepositEstimateResult memory standardDepositResult;
        standardDepositResult.totalCollateralBought = result.totalCollateral;
        standardDepositResult.amountToBeSwapped = result.amountToBeSwapped;
        standardDepositResult.flashLoanAmount = result.flashLoanAmount;
        standardDepositResult.deadline = result.deadline;
        standardDepositResult.risk = result.risk;

        return standardDepositResult;
    }

    /// @notice preview in case of partial shares being withdrawn by the user
    /// @param _shares Total PT shares users is willing to withdraw
    /// @dev Since amount to be swapped could be less than amount received on selling PT.
    /// @dev The user will receive the funds in two tokens, primary deposit token and borrow token.
    function _previewStandardWithdraw(
        address user,
        uint256 _shares
    )
        internal
        view
        virtual
        returns (StandardWithdrawEstimateResult memory)
    {
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();
        uint256 actionDeadline = s.actionDeadline;

        StandardWithdrawEstimateResult memory result;
        if (_getLeverage(user) == Constants.WAD) {
            result.totalSharesReceivedInPrimaryDepositToken = _previewSwapCollateralToPrimaryDepositToken(_shares);
            result.deadline = block.timestamp + actionDeadline;
            return result;
        }

        uint256 totalBorrow = borrowBalance(user);
        uint256 totalCollateral = collateralBalance(user);

        PreviewStandardWithdrawCalculations memory calc;

        (calc.totalCollateralWithdrawn, calc.flashLoanAmount) =
            _calculateWithdrawalAmountByShares(_shares, totalBorrow, totalCollateral);

        if (calc.totalCollateralWithdrawn > totalCollateral) revert MaxCollateralSharesExceeded();

        // Convert withdrawn collateral to primary deposit token
        calc.collateralWithdrawnInPrimaryDepositToken =
            _previewSwapCollateralToPrimaryDepositToken(calc.totalCollateralWithdrawn);

        // Remove buffer from primary deposit token withdrawn to account for potential slippage
        calc.collateralWithdrawnInPrimaryDepositTokenWithBuffer =
            _getSwapAmountWithBuffer(calc.collateralWithdrawnInPrimaryDepositToken);

        // Convert deposit token amount after removing buffer to borrow token to pay off flash loan,
        calc.collateralWithdrawnInBorrowToken =
            _previewSwapPrimaryDepositTokenToBorrow(calc.collateralWithdrawnInPrimaryDepositTokenWithBuffer);

        if (calc.collateralWithdrawnInBorrowToken < calc.flashLoanAmount) revert WithdrawalBalanceExceeded();

        // Use flash loan amount to repay borrow
        totalBorrow -= calc.flashLoanAmount;
        totalCollateral -= calc.totalCollateralWithdrawn;

        result.risk = _previewRiskInternal(Constants.WAD, totalCollateral, totalBorrow);
        result.totalSharesReceivedInBorrowToken = calc.collateralWithdrawnInBorrowToken - calc.flashLoanAmount;
        result.totalSharesReceivedInPrimaryDepositToken =
            calc.collateralWithdrawnInPrimaryDepositToken - calc.collateralWithdrawnInPrimaryDepositTokenWithBuffer;

        result.amountToBeSwapped = calc.collateralWithdrawnInPrimaryDepositTokenWithBuffer;
        result.collateralToBePulled = calc.totalCollateralWithdrawn;
        result.flashLoanAmount = calc.flashLoanAmount;
        result.minAmountOut = calc.flashLoanAmount;
        result.deadline = block.timestamp + actionDeadline;

        return result;
    }

    /// @notice preview shares received by users on complete withdrawal
    /// @dev Since amount to be swapped could be less than amount received on selling PT.
    /// @dev The user will receive the funds in two tokens, primary deposit token and borrow token.
    function _previewWithdrawAll(address user) internal view virtual returns (WithdrawAllEstimateResult memory) {
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();
        uint256 actionDeadline = s.actionDeadline;

        uint256 totalBorrow = borrowBalance(user);
        uint256 totalCollateral = collateralBalance(user);
        WithdrawAllEstimateResult memory result;

        // repay complete borrow using flash loan and then pull out collateral to repay the flash loan
        // assuming that flash loan amount is equivalent to total borrow balance
        PreviewWithdrawAllCalculations memory calc = PreviewWithdrawAllCalculations({
            collateralInPrimaryDepositToken: _previewSwapCollateralToPrimaryDepositToken(totalCollateral),
            collateralInPrimaryDepositTokenWithBuffer: 0,
            collateralInBorrowToken: 0
        });

        // Remove buffer from primary deposit token withdrawn to account for potential slippage
        calc.collateralInPrimaryDepositTokenWithBuffer = _getSwapAmountWithBuffer(calc.collateralInPrimaryDepositToken);

        // Convert deposit token amount after removing buffer to borrow token to pay off flash loan,
        calc.collateralInBorrowToken =
            _previewSwapPrimaryDepositTokenToBorrow(calc.collateralInPrimaryDepositTokenWithBuffer);

        if (calc.collateralInBorrowToken < totalBorrow) revert InsufficientWithdrawalLiquidity();

        result.totalSharesReceivedInBorrowToken = calc.collateralInBorrowToken - totalBorrow;
        result.totalSharesReceivedInPrimaryDepositToken =
            calc.collateralInPrimaryDepositToken - calc.collateralInPrimaryDepositTokenWithBuffer;
        result.amountToBeSwapped = calc.collateralInPrimaryDepositTokenWithBuffer;
        result.flashLoanAmount = _getFlashLoanAmountWithBuffer(totalBorrow);
        result.minAmountOut = totalBorrow;

        result.deadline = block.timestamp + actionDeadline;
        return result;
    }

    /// @notice preview result of deposit being made by the user
    /// @dev flash loan is always taken in terms of borrow token
    function _previewDeposit(
        address _tokenAddress,
        uint256 value,
        uint256 totalBorrow,
        uint256 initialCollateral,
        uint256 leverageInWAD
    )
        private
        view
        returns (InitialDepositEstimateResult memory)
    {
        LoopingFlashLoanableCommonStorage memory s = _getLoopingFlashLoanableCommonStorage();
        BorrowLendingUtilStorage memory b = _getBorrowLendingStorage();

        PreviewDepositCoreParams memory coreParams = PreviewDepositCoreParams({
            priceFeed: s.priceFeed,
            maxLeverage: s.maxLeverage,
            actionDeadline: s.actionDeadline,
            borrowToken: b.borrowToken
        });

        if (leverageInWAD < Constants.WAD || leverageInWAD > coreParams.maxLeverage) revert LeverageOutOfBounds();
        InitialDepositEstimateResult memory result;
        if (leverageInWAD == Constants.WAD) {
            result.estimatedLeverage = Constants.WAD;
            result.totalCollateral = _previewDepositToCollateral(_tokenAddress, value);
            result.deadline = block.timestamp + coreParams.actionDeadline;

            return result;
        }

        uint256 valueInBorrowToken =
            coreParams.priceFeed.convertTokenBalance(_tokenAddress, coreParams.borrowToken, value);
        uint256 flashLoanAmount = Math.mulDiv(valueInBorrowToken, leverageInWAD - Constants.WAD, Constants.WAD);

        PreviewDepositCalculations memory calc = PreviewDepositCalculations({
            valueInBorrowToken: valueInBorrowToken,
            flashLoanAmount: flashLoanAmount,
            collateralSharesOnDeposit: _previewDepositToCollateral(_tokenAddress, value),
            collateralSharesOnFlashLoan: 0,
            totalCollateralAdded: 0
        });

        calc.collateralSharesOnFlashLoan = _previewSwapBorrowToCollateral(calc.flashLoanAmount);
        calc.totalCollateralAdded = calc.collateralSharesOnDeposit + calc.collateralSharesOnFlashLoan;

        uint256 totalCollateral = initialCollateral + calc.totalCollateralAdded;

        // Total Borrow Should increase by flash loan amount
        totalBorrow += calc.flashLoanAmount;
        uint256 riskPreviewed = _previewRiskInternal(Constants.WAD, totalCollateral, totalBorrow);

        result.estimatedLeverage = Math.mulDiv(calc.totalCollateralAdded, Constants.WAD, calc.collateralSharesOnDeposit);
        result.iteration = 0;
        result.lendingThreshold = 0;
        result.risk = riskPreviewed;
        result.totalCollateral = calc.totalCollateralAdded;
        result.deadline = block.timestamp + coreParams.actionDeadline;

        // In case of deposit, flash loan amount will be swapped to primary deposit token
        // This primary deposit token will be used to buy Yield Shares to be added as collateral
        // From where we will borrow the amount to pay off the flash loan
        result.flashLoanAmount = calc.flashLoanAmount;
        result.amountToBeSwapped = calc.flashLoanAmount;

        return result;
    }

    /// @notice max number of PT shares which can be withdrawn
    function _balanceInWithdrawalToken(address user) internal view returns (uint256) {
        uint256 totalBorrow = borrowBalance(user);
        uint256 totalCollateral = collateralBalance(user);

        return totalCollateral - _previewSwapBorrowToCollateral(totalBorrow);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/IERC165.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

/// @title ErrorsLib
/// @author Morpho Labs
/// @custom:contact [email protected]
/// @notice Library exposing error messages.
library ErrorsLib {
    /// @notice Thrown when the caller is not the owner.
    string internal constant NOT_OWNER = "not owner";

    /// @notice Thrown when the LLTV to enable exceeds the maximum LLTV.
    string internal constant MAX_LLTV_EXCEEDED = "max LLTV exceeded";

    /// @notice Thrown when the fee to set exceeds the maximum fee.
    string internal constant MAX_FEE_EXCEEDED = "max fee exceeded";

    /// @notice Thrown when the value is already set.
    string internal constant ALREADY_SET = "already set";

    /// @notice Thrown when the IRM is not enabled at market creation.
    string internal constant IRM_NOT_ENABLED = "IRM not enabled";

    /// @notice Thrown when the LLTV is not enabled at market creation.
    string internal constant LLTV_NOT_ENABLED = "LLTV not enabled";

    /// @notice Thrown when the market is already created.
    string internal constant MARKET_ALREADY_CREATED = "market already created";

    /// @notice Thrown when a token to transfer doesn't have code.
    string internal constant NO_CODE = "no code";

    /// @notice Thrown when the market is not created.
    string internal constant MARKET_NOT_CREATED = "market not created";

    /// @notice Thrown when not exactly one of the input amount is zero.
    string internal constant INCONSISTENT_INPUT = "inconsistent input";

    /// @notice Thrown when zero assets is passed as input.
    string internal constant ZERO_ASSETS = "zero assets";

    /// @notice Thrown when a zero address is passed as input.
    string internal constant ZERO_ADDRESS = "zero address";

    /// @notice Thrown when the caller is not authorized to conduct an action.
    string internal constant UNAUTHORIZED = "unauthorized";

    /// @notice Thrown when the collateral is insufficient to `borrow` or `withdrawCollateral`.
    string internal constant INSUFFICIENT_COLLATERAL = "insufficient collateral";

    /// @notice Thrown when the liquidity is insufficient to `withdraw` or `borrow`.
    string internal constant INSUFFICIENT_LIQUIDITY = "insufficient liquidity";

    /// @notice Thrown when the position to liquidate is healthy.
    string internal constant HEALTHY_POSITION = "position is healthy";

    /// @notice Thrown when the authorization signature is invalid.
    string internal constant INVALID_SIGNATURE = "invalid signature";

    /// @notice Thrown when the authorization signature is expired.
    string internal constant SIGNATURE_EXPIRED = "signature expired";

    /// @notice Thrown when the nonce is invalid.
    string internal constant INVALID_NONCE = "invalid nonce";

    /// @notice Thrown when a token transfer reverted.
    string internal constant TRANSFER_REVERTED = "transfer reverted";

    /// @notice Thrown when a token transfer returned false.
    string internal constant TRANSFER_RETURNED_FALSE = "transfer returned false";

    /// @notice Thrown when a token transferFrom reverted.
    string internal constant TRANSFER_FROM_REVERTED = "transferFrom reverted";

    /// @notice Thrown when a token transferFrom returned false
    string internal constant TRANSFER_FROM_RETURNED_FALSE = "transferFrom returned false";

    /// @notice Thrown when the maximum uint128 is exceeded.
    string internal constant MAX_UINT128_EXCEEDED = "max uint128 exceeded";
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/Errors.sol)

pragma solidity ^0.8.20;

/**
 * @dev Collection of common custom errors used in multiple contracts
 *
 * IMPORTANT: Backwards compatibility is not guaranteed in future versions of the library.
 * It is recommended to avoid relying on the error API for critical functionality.
 *
 * _Available since v5.1._
 */
library Errors {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error InsufficientBalance(uint256 balance, uint256 needed);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedCall();

    /**
     * @dev The deployment failed.
     */
    error FailedDeployment();

    /**
     * @dev A necessary precompile is missing.
     */
    error MissingPrecompile(address);
}

{
  "remappings": [
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "@spectra-core/src/=lib/spectra-core/src/",
    "@pythnetwork/pyth-sdk-solidity/=node_modules/@pythnetwork/pyth-sdk-solidity/",
    "hardhat/=node_modules/hardhat/",
    "@morpho-blue/=lib/morpho-blue/",
    "ds-test/=lib/openzeppelin-foundry-upgrades/lib/solidity-stringutils/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts-upgradeable/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "halmos-cheatcodes/=lib/openzeppelin-contracts-upgradeable/lib/halmos-cheatcodes/src/",
    "morpho-blue/=lib/morpho-blue/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "openzeppelin-erc20-basic/=lib/spectra-core/lib/openzeppelin-contracts/contracts/token/ERC20/",
    "openzeppelin-erc20-extensions/=lib/spectra-core/lib/openzeppelin-contracts-upgradeable/contracts/token/ERC20/extensions/",
    "openzeppelin-erc20/=lib/spectra-core/lib/openzeppelin-contracts-upgradeable/contracts/token/ERC20/",
    "openzeppelin-foundry-upgrades/=lib/openzeppelin-foundry-upgrades/src/",
    "openzeppelin-math/=lib/spectra-core/lib/openzeppelin-contracts/contracts/utils/math/",
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}

• No Contract Security Audit Submitted- Submit Audit Here

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000000000000000000000000c7eaefecbb57b7bca1292b6df285486c2873d143000000000000000000000000297612c171fc8adce32ac333085a9ee1f2bcc1da000000000000000000000000cd6863bb697d7cee5b7ed8dea7d803374f7e4aa6000000000000000000000000297612c171fc8adce32ac333085a9ee1f2bcc1da0000000000000000000000001cb453f8d5565643fb20f5d005454db88dc088be0000000000000000000000004f708c0ae7ded3d74736594c2109c2e3c065b4280000000000000000000000000000000000000000000000000bef55718ad60000000000000000000000000000d50f2dfffd62f94ee4aed9ca05c61d0753268abc000000000000000000000000ab162c41ad27df8614edd43f886857bb2054c23e000000000000000000000000000000000000000000000000002386f26fc10000000000000000000000000000000000000000000000000000002386f26fc1000000000000000000000000000000000000000000000000000000000000000000780000000000000000000000000000000000000000000000006f05b59d3b200000000000000000000000000000cd6863bb697d7cee5b7ed8dea7d803374f7e4aa6000000000000000000000000f6f3c8ff7bac29e6a19f9fc1ca1826426f7e2866000000000000000000000000ab162c41ad27df8614edd43f886857bb2054c23e000000000000000000000000d50f2dfffd62f94ee4aed9ca05c61d0753268abc0000000000000000000000005477b94198f12e4e5faab2c8d95b807c061797c5

-----Decoded View---------------
Arg [0] : config (tuple): 
     Arg [1] : loopingStrategyStorage (tuple): 
     Arg [1] : authorizedSwapRouter (address): 0xc7eaEfECBb57B7bCA1292B6DF285486C2873d143
     Arg [2] : avKatVault (address): 0x297612c171fc8ADce32ac333085a9Ee1F2BCC1Da

     Arg [2] : morphoStrategyConfig (tuple): 
     Arg [1] : morphoCommons (tuple): 
     Arg [1] : marketParams (tuple): 
     Arg [1] : loanToken (address): 0xCD6863bB697d7CEE5b7Ed8deA7D803374F7e4Aa6
     Arg [2] : collateralToken (address): 0x297612c171fc8ADce32ac333085a9Ee1F2BCC1Da
     Arg [3] : oracle (address): 0x1cB453F8d5565643fb20F5d005454DB88dC088Be
     Arg [4] : irm (address): 0x4F708C0ae7deD3d74736594C2109C2E3c065B428
     Arg [5] : lltv (uint256): 860000000000000000

     Arg [2] : morpho (address): 0xD50F2DffFd62f94Ee4AEd9ca05C61d0753268aBc

     Arg [2] : priceFeed (address): 0xaB162c41Ad27DF8614eDd43F886857Bb2054C23e

     Arg [3] : loopingFlashLoanableCommonStorage (tuple): 
     Arg [1] : amountToBeSwappedBufferInWAD (uint256): 10000000000000000
     Arg [2] : withdrawAllBufferInWAD (uint256): 10000000000000000
     Arg [3] : actionDeadline (uint256): 120
     Arg [4] : maxLeverage (uint256): 8000000000000000000
     Arg [5] : primaryDepositToken (address): 0xCD6863bB697d7CEE5b7Ed8deA7D803374F7e4Aa6
     Arg [6] : loopingUtil (address): 0xf6F3C8FF7bac29E6a19f9FC1CA1826426f7E2866
     Arg [7] : priceFeed (address): 0xaB162c41Ad27DF8614eDd43F886857Bb2054C23e
     Arg [8] : flashLoanCaller (address): 0xD50F2DffFd62f94Ee4AEd9ca05C61d0753268aBc


Arg [1] : positionManager (address): 0x5477B94198f12E4E5fAab2c8D95B807C061797C5

-----Encoded View---------------
18 Constructor Arguments found :
Arg [0] : 000000000000000000000000c7eaefecbb57b7bca1292b6df285486c2873d143
Arg [1] : 000000000000000000000000297612c171fc8adce32ac333085a9ee1f2bcc1da
Arg [2] : 000000000000000000000000cd6863bb697d7cee5b7ed8dea7d803374f7e4aa6
Arg [3] : 000000000000000000000000297612c171fc8adce32ac333085a9ee1f2bcc1da
Arg [4] : 0000000000000000000000001cb453f8d5565643fb20f5d005454db88dc088be
Arg [5] : 0000000000000000000000004f708c0ae7ded3d74736594c2109c2e3c065b428
Arg [6] : 0000000000000000000000000000000000000000000000000bef55718ad60000
Arg [7] : 000000000000000000000000d50f2dfffd62f94ee4aed9ca05c61d0753268abc
Arg [8] : 000000000000000000000000ab162c41ad27df8614edd43f886857bb2054c23e
Arg [9] : 000000000000000000000000000000000000000000000000002386f26fc10000
Arg [10] : 000000000000000000000000000000000000000000000000002386f26fc10000
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000078
Arg [12] : 0000000000000000000000000000000000000000000000006f05b59d3b200000
Arg [13] : 000000000000000000000000cd6863bb697d7cee5b7ed8dea7d803374f7e4aa6
Arg [14] : 000000000000000000000000f6f3c8ff7bac29e6a19f9fc1ca1826426f7e2866
Arg [15] : 000000000000000000000000ab162c41ad27df8614edd43f886857bb2054c23e
Arg [16] : 000000000000000000000000d50f2dfffd62f94ee4aed9ca05c61d0753268abc
Arg [17] : 0000000000000000000000005477b94198f12e4e5faab2c8d95b807c061797c5