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// SPDX-License-Identifier: MIT

pragma solidity 0.8.26;

import {IFeeHook} from "src/interfaces/utils/integrations/IFeeHook.sol";
import {IMetaCore} from "src/interfaces/core/IMetaCore.sol";

/**
 * @title FeeHook
 * @author Spinnaker Labs
 * @notice Simple settable fee for PSM
 */
contract FeeHook is IFeeHook {
    struct Fee {
        bool exists;
        uint16 entryFeeInBp;
        uint16 exitFeeInBp;
    }

    IMetaCore metaCore;

    mapping(address actor => Fee) public customFee;

    constructor(address _metaCore) {
        metaCore = IMetaCore(_metaCore);
    }

    function calcFee(address caller, address stable, uint256 amount, Action action) external view returns (uint256 feeInBP) {
        Fee memory fee = customFee[caller];

        if (action == Action.DEPOSIT || action == Action.MINT) {
            return fee.exists ? fee.entryFeeInBp : 20; // 0.2%
        }

        return fee.exists ? fee.exitFeeInBp : 35; // 0.35%
    }

    function setCustomFee(address actor, Fee calldata fee) external {
        require(msg.sender == metaCore.owner(), "Not owner");

        customFee[actor] = fee;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.26;

interface IFeeHook {
    enum Action {
        DEPOSIT,
        MINT,
        WITHDRAW,
        REDEEM
    }

    function calcFee(address caller, address token, uint amount, Action action) external view returns (uint feeInBP);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.26;

interface IMetaCore {
    // ---------------------------------
    // Structures
    // ---------------------------------
    struct FeeInfo {
        bool existsForDebtToken;
        uint16 debtTokenFee;
    }

    struct RebalancerFeeInfo {
        bool exists;
        uint16 entryFee;
        uint16 exitFee;
    }

    // ---------------------------------
    // Public constants
    // ---------------------------------
    function OWNERSHIP_TRANSFER_DELAY() external view returns (uint256);
    function DEFAULT_FLASH_LOAN_FEE() external view returns (uint16);

    // ---------------------------------
    // Public state variables
    // ---------------------------------
    function debtToken() external view returns (address);
    function lspEntryFee() external view returns (uint16);
    function lspExitFee() external view returns (uint16);
    function interestProtocolShare() external view returns (uint16);
    /// @dev Default interest receiver for all PositionManagers, unless overriden in the respective PM
    function defaultInterestReceiver() external view returns (address);

    function feeReceiver() external view returns (address);
    function priceFeed() external view returns (address);
    function owner() external view returns (address);
    function pendingOwner() external view returns (address);
    function ownershipTransferDeadline() external view returns (uint256);
    function guardian() external view returns (address);
    function paused() external view returns (bool);
    function lspBootstrapPeriod() external view returns (uint64);

    // ---------------------------------
    // External functions
    // ---------------------------------
    function setFeeReceiver(address _feeReceiver) external;
    function setPriceFeed(address _priceFeed) external;
    function setGuardian(address _guardian) external;

    /**
     * @notice Global pause/unpause
     *         Pausing halts new deposits/borrowing across the protocol
     */
    function setPaused(bool _paused) external;

    /**
     * @notice Extend or change the LSP bootstrap period,
     *         after which certain protocol mechanics change
     */
    function setLspBootstrapPeriod(uint64 _bootstrapPeriod) external;

    /**
     * @notice Set a custom flash-loan fee for a given periphery contract
     * @param _periphery Target contract that will get this custom fee
     * @param _debtTokenFee Fee in basis points (bp)
     * @param _existsForDebtToken Whether this custom fee is used when the caller = `debtToken`
     */
    function setPeripheryFlashLoanFee(address _periphery, uint16 _debtTokenFee, bool _existsForDebtToken) external;

    /**
     * @notice Begin the ownership transfer process
     * @param newOwner The address proposed to be the new owner
     */
    function commitTransferOwnership(address newOwner) external;

    /**
     * @notice Finish the ownership transfer, after the mandatory delay
     */
    function acceptTransferOwnership() external;

    /**
     * @notice Revoke a pending ownership transfer
     */
    function revokeTransferOwnership() external;

    /**
     * @notice Look up a custom flash-loan fee for a specific periphery contract
     * @param peripheryContract The contract that might have a custom fee
     * @return The flash-loan fee in basis points
     */
    function getPeripheryFlashLoanFee(address peripheryContract) external view returns (uint16);

    /**
     * @notice Set / override entry & exit fees for a special rebalancer contract
     */
    function setRebalancerFee(address _rebalancer, uint16 _entryFee, uint16 _exitFee) external;

    /**
     * @notice Set the LSP entry fee globally
     * @param _fee Fee in basis points
     */
    function setEntryFee(uint16 _fee) external;

    /**
     * @notice Set the LSP exit fee globally
     * @param _fee Fee in basis points
     */
    function setExitFee(uint16 _fee) external;

    /**
     * @notice Set the interest protocol share globally to all PositionManagers
     * @param _interestProtocolShare Share in basis points
     */
    function setInterestProtocolShare(uint16 _interestProtocolShare) external;

    /**
     * @notice Look up the LSP entry fee for a rebalancer
     * @param rebalancer Possibly has a special fee
     * @return The entry fee in basis points
     */
    function getLspEntryFee(address rebalancer) external view returns (uint16);

    /**
     * @notice Look up the LSP exit fee for a rebalancer
     * @param rebalancer Possibly has a special fee
     * @return The exit fee in basis points
     */
    function getLspExitFee(address rebalancer) external view returns (uint16);

    // ---------------------------------
    // Events
    // ---------------------------------
    event NewOwnerCommitted(address indexed owner, address indexed pendingOwner, uint256 deadline);
    event NewOwnerAccepted(address indexed oldOwner, address indexed newOwner);
    event NewOwnerRevoked(address indexed owner, address indexed revokedOwner);

    event FeeReceiverSet(address indexed feeReceiver);
    event PriceFeedSet(address indexed priceFeed);
    event GuardianSet(address indexed guardian);
    event PeripheryFlashLoanFee(address indexed periphery, uint16 debtTokenFee);
    event LSPBootstrapPeriodSet(uint64 bootstrapPeriod);
    event RebalancerFees(address indexed rebalancer, uint16 entryFee, uint16 exitFee);
    event EntryFeeSet(uint16 fee);
    event ExitFeeSet(uint16 fee);
    event InterestProtocolShareSet(uint16 interestProtocolShare);
    event DefaultInterestReceiverSet(address indexed defaultInterestReceiver);
    event Paused();
    event Unpaused();
}

{
  "remappings": [
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "@openzeppelin-upgradeable/contracts/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "solady/=lib/solady/src/",
    "@solmate/=lib/solmate/src/",
    "@chimera/=lib/chimera/src/",
    "forge-std/=lib/forge-std/src/",
    "@uniswap/v3-core/=lib/v3-core/",
    "@uniswap/v3-periphery/=lib/v3-periphery/",
    "@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "chimera/=lib/chimera/src/",
    "ds-test/=lib/solmate/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts-upgradeable/lib/erc4626-tests/",
    "halmos-cheatcodes/=lib/openzeppelin-contracts-upgradeable/lib/halmos-cheatcodes/src/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "rewards/=lib/rewards/",
    "solmate/=lib/solmate/src/",
    "uniswap/=lib/uniswap/",
    "v3-core/=lib/v3-core/contracts/",
    "v3-periphery/=lib/v3-periphery/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 1
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "cancun",
  "viaIR": false
}

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[{"inputs":[{"internalType":"address","name":"_metaCore","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"caller","type":"address"},{"internalType":"address","name":"stable","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"enum IFeeHook.Action","name":"action","type":"uint8"}],"name":"calcFee","outputs":[{"internalType":"uint256","name":"feeInBP","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"actor","type":"address"}],"name":"customFee","outputs":[{"internalType":"bool","name":"exists","type":"bool"},{"internalType":"uint16","name":"entryFeeInBp","type":"uint16"},{"internalType":"uint16","name":"exitFeeInBp","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"actor","type":"address"},{"components":[{"internalType":"bool","name":"exists","type":"bool"},{"internalType":"uint16","name":"entryFeeInBp","type":"uint16"},{"internalType":"uint16","name":"exitFeeInBp","type":"uint16"}],"internalType":"struct FeeHook.Fee","name":"fee","type":"tuple"}],"name":"setCustomFee","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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0000000000000000000000008700af942be2a6e5566306d0ee7bcc5a3a6e0ce8

-----Decoded View---------------
Arg [0] : _metaCore (address): 0x8700AF942BE2A6E5566306D0eE7Bcc5a3A6E0ce8

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000008700af942be2a6e5566306d0ee7bcc5a3a6e0ce8