/// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

import {IDAO} from "@aragon/osx-commons-contracts/src/dao/IDAO.sol";
import {IDynamicExitQueue, IDynamicExitQueueFee} from "./IDynamicExitQueue.sol";
import {
    IERC20Upgradeable as IERC20
} from "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";
import {IVotingEscrowIncreasing as IVotingEscrow} from "@escrow/IVotingEscrowIncreasing.sol";
import {IClockUser, IClock} from "@clock/IClock.sol";

import {
    SafeERC20Upgradeable as SafeERC20
} from "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol";

import {UUPSUpgradeable} from "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
import {
    DaoAuthorizableUpgradeable as DaoAuthorizable
} from "@aragon/osx-commons-contracts/src/permission/auth/DaoAuthorizableUpgradeable.sol";

/// @title DynamicExitQueue
/// @notice Token IDs associated with an NFT are given a ticket when they are queued for exit.
/// After a cooldown period, the ticket holder can exit the NFT with dynamic fee calculations.
contract DynamicExitQueue is IDynamicExitQueue, IClockUser, DaoAuthorizable, UUPSUpgradeable {
    using SafeERC20 for IERC20;

    /// @notice role required to manage the exit queue
    bytes32 public constant QUEUE_ADMIN_ROLE = keccak256("QUEUE_ADMIN");

    /// @notice role required to withdraw tokens from the escrow contract
    bytes32 public constant WITHDRAW_ROLE = keccak256("WITHDRAW_ROLE");

    /// @dev 10_000 = 100%
    uint16 private constant MAX_FEE_PERCENT = 10_000;

    /// @dev 1e18 is used for internal precision in fee calculations
    uint256 private constant INTERNAL_PRECISION = 1e18;

    /// @notice the highest fee someone will pay on exit
    uint256 public feePercent;

    /// @notice address of the escrow contract
    address public escrow;

    /// @notice clock contract for epoch duration
    address public clock;

    /// @notice time in seconds between entering queue and exiting on optimal terms
    uint48 public cooldown;

    /// @notice minimum time from the original lock date before one can enter the queue
    uint48 public minLock;

    /// @notice tokenId => TicketV2
    mapping(uint256 => TicketV2) internal _queue;

    /*//////////////////////////////////////////////////////////////
			  Dynamic Fee Params
    //////////////////////////////////////////////////////////////*/

    /// @notice Minimum fee percent charged after full cooldown period
    uint256 public minFeePercent;

    /// @notice Minimum wait time before any exit is possible
    uint48 public minCooldown;

    /// @notice Fee decrease per second (basis points/second) during decay period
    /// @dev Set to 0 when minCooldown == cooldown to prevent division by zero
    uint256 internal _slope;

    /*//////////////////////////////////////////////////////////////
                              Constructor
    //////////////////////////////////////////////////////////////*/
    constructor() {
        _disableInitializers();
    }

    /// @param _escrow address of the escrow contract where tokens are stored
    /// @param _cooldown time in seconds between exit and withdrawal
    /// @param _dao address of the DAO that will be able to set the queue
    function initialize(
        address _escrow,
        uint48 _cooldown,
        address _dao,
        uint256 _feePercent,
        address _clock,
        uint48 _minLock
    ) external initializer {
        __DaoAuthorizableUpgradeable_init(IDAO(_dao));
        escrow = _escrow;
        clock = _clock;
        _setMinLock(_minLock);

        // Initialize with fixed fee system, no early exits
        if (_feePercent > MAX_FEE_PERCENT) revert FeePercentTooHigh(MAX_FEE_PERCENT);
        _setFixedExitFeePercent(_feePercent, _cooldown, false);
    }

    /*//////////////////////////////////////////////////////////////
                              Modifiers
    //////////////////////////////////////////////////////////////*/

    modifier onlyEscrow() {
        if (msg.sender != escrow) revert OnlyEscrow();
        _;
    }

    /*//////////////////////////////////////////////////////////////
			      Admin Functions
    //////////////////////////////////////////////////////////////*/

    /// @notice The exit queue manager can set the minimum lock time
    function setMinLock(uint48 _minLock) external auth(QUEUE_ADMIN_ROLE) {
        _setMinLock(_minLock);
    }

    function _setMinLock(uint48 _minLock) internal {
        if (_minLock == 0) revert MinLockOutOfBounds();
        minLock = _minLock;
        emit MinLockSet(_minLock);
    }

    /// @inheritdoc IDynamicExitQueueFee
    function setDynamicExitFeePercent(
        uint256 _minFeePercent,
        uint256 _maxFeePercent,
        uint48 _cooldown,
        uint48 _minCooldown
    ) external auth(QUEUE_ADMIN_ROLE) {
        if (_minFeePercent > MAX_FEE_PERCENT || _maxFeePercent > MAX_FEE_PERCENT) {
            revert FeePercentTooHigh(MAX_FEE_PERCENT);
        }
        if (_maxFeePercent <= _minFeePercent) revert InvalidFeeParameters();
        // setting cooldown == minCooldown would imply a vertical slope
        if (_cooldown <= _minCooldown) revert CooldownTooShort();

        _setDynamicExitFeePercent(_minFeePercent, _maxFeePercent, _cooldown, _minCooldown);
    }

    /// @inheritdoc IDynamicExitQueueFee
    function setTieredExitFeePercent(
        uint256 _baseFeePercent,
        uint256 _earlyFeePercent,
        uint48 _cooldown,
        uint48 _minCooldown
    ) external auth(QUEUE_ADMIN_ROLE) {
        if (_baseFeePercent > MAX_FEE_PERCENT || _earlyFeePercent > MAX_FEE_PERCENT) {
            revert FeePercentTooHigh(MAX_FEE_PERCENT);
        }
        if (_earlyFeePercent <= _baseFeePercent) revert InvalidFeeParameters();
        if (_cooldown <= _minCooldown) revert CooldownTooShort();

        _setTieredExitFeePercent(_baseFeePercent, _earlyFeePercent, _cooldown, _minCooldown);
    }

    /// @inheritdoc IDynamicExitQueueFee
    function setFixedExitFeePercent(
        uint256 _feePercent,
        uint48 _cooldown,
        bool _allowEarlyExit
    ) external auth(QUEUE_ADMIN_ROLE) {
        if (_feePercent > MAX_FEE_PERCENT) revert FeePercentTooHigh(MAX_FEE_PERCENT);

        _setFixedExitFeePercent(_feePercent, _cooldown, _allowEarlyExit);
    }

    function _setDynamicExitFeePercent(
        uint256 _minFeePercent,
        uint256 _maxFeePercent,
        uint48 _cooldown,
        uint48 _minCooldown
    ) internal {
        feePercent = _maxFeePercent;
        minFeePercent = _minFeePercent;
        cooldown = _cooldown;
        minCooldown = _minCooldown;
        _slope = _computeSlope(_minFeePercent, _maxFeePercent, _cooldown, _minCooldown);

        emit ExitFeePercentAdjusted(
            _maxFeePercent,
            _minFeePercent,
            _minCooldown,
            ExitFeeType.Dynamic
        );
    }

    function _setTieredExitFeePercent(
        uint256 _baseFeePercent,
        uint256 _earlyFeePercent,
        uint48 _cooldown,
        uint48 _minCooldown
    ) internal {
        feePercent = _earlyFeePercent;
        minFeePercent = _baseFeePercent;
        cooldown = _cooldown;
        minCooldown = _minCooldown;
        _slope = 0; // No decay in tiered system

        emit ExitFeePercentAdjusted(
            _earlyFeePercent,
            _baseFeePercent,
            _minCooldown,
            ExitFeeType.Tiered
        );
    }

    function _setFixedExitFeePercent(
        uint256 _feePercent,
        uint48 _cooldown,
        bool _allowEarlyExit
    ) internal {
        feePercent = _feePercent;
        minFeePercent = _feePercent;
        cooldown = _cooldown;
        _slope = 0; // No decay in fixed system

        // immediate or none
        if (_allowEarlyExit) minCooldown = 0;
        else minCooldown = _cooldown;

        emit ExitFeePercentAdjusted(_feePercent, _feePercent, minCooldown, ExitFeeType.Fixed);
    }

    /*//////////////////////////////////////////////////////////////
                              SLOPE
    //////////////////////////////////////////////////////////////*/

    function _computeSlope(
        uint256 _minFeePercent,
        uint256 _maxFeePercent,
        uint48 _cooldown,
        uint48 _minCooldown
    ) internal pure returns (uint256) {
        // Calculate slope in 1e18 scale for maximum precision
        uint256 scaledMaxFee = (_maxFeePercent * INTERNAL_PRECISION) / MAX_FEE_PERCENT;
        uint256 scaledMinFee = (_minFeePercent * INTERNAL_PRECISION) / MAX_FEE_PERCENT;
        uint256 scaledFeeRange = scaledMaxFee - scaledMinFee;
        uint256 timeRange = _cooldown - _minCooldown;
        return scaledFeeRange / timeRange;
    }

    /*//////////////////////////////////////////////////////////////
                              WITHDRAWER
    //////////////////////////////////////////////////////////////*/

    /// @notice withdraw staked tokens sent as part of fee collection to the caller
    /// @dev The caller must be authorized to withdraw by the DAO
    function withdraw(uint256 _amount) external auth(WITHDRAW_ROLE) {
        IERC20 underlying = IERC20(IVotingEscrow(escrow).token());
        underlying.safeTransfer(msg.sender, _amount);
    }

    /*//////////////////////////////////////////////////////////////
                              Exit Logic
    //////////////////////////////////////////////////////////////*/

    /// @notice queue an exit for a given tokenId, granting the ticket to the passed holder
    /// @param _tokenId the tokenId to queue an exit for
    /// @param _ticketHolder the address that will be granted the ticket
    /// @dev we don't check that the ticket holder is the caller
    /// this is because the escrow contract is the only one that can queue an exit
    /// and we leave that logic to the escrow contract
    function queueExit(uint256 _tokenId, address _ticketHolder) external onlyEscrow {
        if (_ticketHolder == address(0)) revert ZeroAddress();
        if (_queue[_tokenId].holder != address(0)) revert AlreadyQueued();

        // get time to min lock and revert if it hasn't been reached
        uint48 minLockTime = timeToMinLock(_tokenId);
        if (minLockTime > block.timestamp) {
            revert MinLockNotReached(_tokenId, minLock, minLockTime);
        }

        uint48 queuedAt = uint48(block.timestamp);
        _queue[_tokenId] = TicketV2(_ticketHolder, queuedAt);

        emit ExitQueuedV2(_tokenId, _ticketHolder, queuedAt);
    }

    /// @notice Exits the queue for that tokenID.
    /// @dev The holder is not checked. This is left up to the escrow contract to manage.
    function exit(uint256 _tokenId) external onlyEscrow returns (uint256 fee) {
        if (!canExit(_tokenId)) revert CannotExit();

        // calculate fee before resetting ticket
        fee = calculateFee(_tokenId);

        // reset the ticket for that tokenId
        _queue[_tokenId] = TicketV2(address(0), 0);

        emit Exit(_tokenId, fee);
    }

    /// @notice Cancels the exit.
    /// @dev The token must have a holder.
    function cancelExit(uint256 _tokenId) external onlyEscrow {
        TicketV2 memory ticket = _queue[_tokenId];

        // This should never occur as escrow already checks this
        // but for safety, still advisable to have this check.
        if (ticket.holder == address(0)) {
            revert CannotCancelExit();
        }

        _queue[_tokenId] = TicketV2(address(0), 0);
        emit ExitCancelled(_tokenId, ticket.holder);
    }

    /// @notice Calculate the absolute fee amount for exiting a specific token
    /// @param _tokenId The token ID to calculate fee for
    /// @return Fee amount in underlying token units
    function calculateFee(uint256 _tokenId) public view returns (uint256) {
        TicketV2 memory ticket = _queue[_tokenId];
        if (ticket.holder == address(0)) return 0;

        uint256 underlyingBalance = IVotingEscrow(escrow).locked(_tokenId).amount;
        if (underlyingBalance == 0) revert NoLockBalance();

        uint256 timeElapsed = block.timestamp - ticket.queuedAt;
        uint256 scaledFeePercent = _getScaledTimeBasedFee(timeElapsed);
        return (underlyingBalance * scaledFeePercent) / INTERNAL_PRECISION;
    }

    /// @notice Internal function to get time-based fee in 1e18 scale
    /// @param timeElapsed Time elapsed since ticket was queued
    /// @return Fee percent in 1e18 scale (0 = 0%, 1e18 = 100%)
    function _getScaledTimeBasedFee(uint256 timeElapsed) internal view returns (uint256) {
        uint256 scaledMaxFee = (feePercent * INTERNAL_PRECISION) / MAX_FEE_PERCENT;
        uint256 scaledMinFee = (minFeePercent * INTERNAL_PRECISION) / MAX_FEE_PERCENT;

        // Fixed fee system (no decay, no tiers)
        if (minFeePercent == feePercent) return scaledMaxFee;

        // Tiered system (no slope) or fixed system
        if (_slope == 0) {
            return timeElapsed <= cooldown ? scaledMaxFee : scaledMinFee;
        }

        // Dynamic system (linear decay using stored slope)
        if (timeElapsed <= minCooldown) return scaledMaxFee;
        if (timeElapsed >= cooldown) return scaledMinFee;

        // Calculate fee reduction using high-precision slope
        uint256 timeInDecay = timeElapsed - minCooldown;
        uint256 feeReduction = _slope * timeInDecay;

        // Ensure we don't go below minimum fee
        if (feeReduction >= (scaledMaxFee - scaledMinFee)) {
            return scaledMinFee;
        }

        return scaledMaxFee - feeReduction;
    }

    /// @notice Calculate the exit fee percent for a given time elapsed
    /// @param timeElapsed Time elapsed since ticket was queued
    /// @return Fee percent in basis points
    function getTimeBasedFee(uint256 timeElapsed) public view returns (uint256) {
        uint256 scaledFee = _getScaledTimeBasedFee(timeElapsed);
        return (scaledFee * MAX_FEE_PERCENT) / INTERNAL_PRECISION;
    }

    /*//////////////////////////////////////////////////////////////
                              View Functions
    //////////////////////////////////////////////////////////////*/

    /// @notice Check if a token has completed its full cooldown period (minimum fee applies)
    /// @param _tokenId The token ID to check
    /// @return True if full cooldown elapsed, false otherwise
    function isCool(uint256 _tokenId) public view returns (bool) {
        TicketV2 memory ticket = _queue[_tokenId];
        if (ticket.holder == address(0)) return false;
        return block.timestamp - ticket.queuedAt >= cooldown;
    }

    /// @return true if the tokenId corresponds to a valid ticket and the minimum cooldown period has passed
    function canExit(uint256 _tokenId) public view returns (bool) {
        TicketV2 memory ticket = _queue[_tokenId];
        if (ticket.holder == address(0)) return false;
        return block.timestamp - ticket.queuedAt >= minCooldown;
    }

    /// @return holder of a ticket for a given tokenId
    function ticketHolder(uint256 _tokenId) external view returns (address) {
        return _queue[_tokenId].holder;
    }

    function queue(uint256 _tokenId) external view override returns (TicketV2 memory) {
        return _queue[_tokenId];
    }

    function timeToMinLock(uint256 _tokenId) public view returns (uint48) {
        uint48 lockStart = IVotingEscrow(escrow).locked(_tokenId).start;
        return lockStart + minLock;
    }

    /*///////////////////////////////////////////////////////////////
                            UUPS Upgrade
    //////////////////////////////////////////////////////////////*/

    /// @notice Returns the address of the implementation contract in the [proxy storage slot](https://eips.ethereum.org/EIPS/eip-1967) slot the [UUPS proxy](https://eips.ethereum.org/EIPS/eip-1822) is pointing to.
    /// @return The address of the implementation contract.
    function implementation() public view returns (address) {
        return _getImplementation();
    }

    /// @notice Internal method authorizing the upgrade of the contract via the [upgradeability mechanism for UUPS proxies](https://docs.openzeppelin.com/contracts/4.x/api/proxy#UUPSUpgradeable) (see [ERC-1822](https://eips.ethereum.org/EIPS/eip-1822)).
    function _authorizeUpgrade(address) internal virtual override auth(QUEUE_ADMIN_ROLE) {}

    /// @dev Reserved storage space to allow for layout changes in the future.
    uint256[42] private __gap; // Reduced to account for new state variables
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity ^0.8.8;

/// @title IDAO
/// @author Aragon X - 2022-2024
/// @notice The interface required for DAOs within the Aragon App DAO framework.
/// @custom:security-contact [email protected]
interface IDAO {
    /// @notice Checks if an address has permission on a contract via a permission identifier and considers if `ANY_ADDRESS` was used in the granting process.
    /// @param _where The address of the contract.
    /// @param _who The address of a EOA or contract to give the permissions.
    /// @param _permissionId The permission identifier.
    /// @param _data The optional data passed to the `PermissionCondition` registered.
    /// @return Returns true if the address has permission, false if not.
    function hasPermission(
        address _where,
        address _who,
        bytes32 _permissionId,
        bytes memory _data
    ) external view returns (bool);

    /// @notice Updates the DAO metadata (e.g., an IPFS hash).
    /// @param _metadata The IPFS hash of the new metadata object.
    function setMetadata(bytes calldata _metadata) external;

    /// @notice Emitted when the DAO metadata is updated.
    /// @param metadata The IPFS hash of the new metadata object.
    event MetadataSet(bytes metadata);

    /// @notice Emitted when a standard callback is registered.
    /// @param interfaceId The ID of the interface.
    /// @param callbackSelector The selector of the callback function.
    /// @param magicNumber The magic number to be registered for the callback function selector.
    event StandardCallbackRegistered(
        bytes4 interfaceId,
        bytes4 callbackSelector,
        bytes4 magicNumber
    );

    /// @notice Deposits (native) tokens to the DAO contract with a reference string.
    /// @param _token The address of the token or address(0) in case of the native token.
    /// @param _amount The amount of tokens to deposit.
    /// @param _reference The reference describing the deposit reason.
    function deposit(address _token, uint256 _amount, string calldata _reference) external payable;

    /// @notice Emitted when a token deposit has been made to the DAO.
    /// @param sender The address of the sender.
    /// @param token The address of the deposited token.
    /// @param amount The amount of tokens deposited.
    /// @param _reference The reference describing the deposit reason.
    event Deposited(
        address indexed sender,
        address indexed token,
        uint256 amount,
        string _reference
    );

    /// @notice Emitted when a native token deposit has been made to the DAO.
    /// @dev This event is intended to be emitted in the `receive` function and is therefore bound by the gas limitations for `send`/`transfer` calls introduced by [ERC-2929](https://eips.ethereum.org/EIPS/eip-2929).
    /// @param sender The address of the sender.
    /// @param amount The amount of native tokens deposited.
    event NativeTokenDeposited(address sender, uint256 amount);

    /// @notice Setter for the trusted forwarder verifying the meta transaction.
    /// @param _trustedForwarder The trusted forwarder address.
    function setTrustedForwarder(address _trustedForwarder) external;

    /// @notice Getter for the trusted forwarder verifying the meta transaction.
    /// @return The trusted forwarder address.
    function getTrustedForwarder() external view returns (address);

    /// @notice Emitted when a new TrustedForwarder is set on the DAO.
    /// @param forwarder the new forwarder address.
    event TrustedForwarderSet(address forwarder);

    /// @notice Checks whether a signature is valid for a provided hash according to [ERC-1271](https://eips.ethereum.org/EIPS/eip-1271).
    /// @param _hash The hash of the data to be signed.
    /// @param _signature The signature byte array associated with `_hash`.
    /// @return Returns the `bytes4` magic value `0x1626ba7e` if the signature is valid and `0xffffffff` if not.
    function isValidSignature(bytes32 _hash, bytes memory _signature) external returns (bytes4);

    /// @notice Registers an ERC standard having a callback by registering its [ERC-165](https://eips.ethereum.org/EIPS/eip-165) interface ID and callback function signature.
    /// @param _interfaceId The ID of the interface.
    /// @param _callbackSelector The selector of the callback function.
    /// @param _magicNumber The magic number to be registered for the function signature.
    function registerStandardCallback(
        bytes4 _interfaceId,
        bytes4 _callbackSelector,
        bytes4 _magicNumber
    ) external;

    /// @notice Removed function being left here to not corrupt the IDAO interface ID. Any call will revert.
    /// @dev Introduced in v1.0.0. Removed in v1.4.0.
    function setSignatureValidator(address) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {
    IExitQueueMinLock,
    IExitMinLockCooldownErrorsAndEvents,
    IExitQueueCoreErrorsAndEvents,
    IExitQueueCancelErrorsAndEvents
} from "./IExitQueue.sol";

interface ITicketV2 {
    struct TicketV2 {
        address holder;
        uint48 queuedAt;
    }

    event ExitQueuedV2(uint256 indexed tokenId, address indexed holder, uint48 queuedAt);
}

/*///////////////////////////////////////////////////////////////
                        Fee Collection
//////////////////////////////////////////////////////////////*/

interface IExitFeeWithdrawErrorsAndEvents {
    event Withdraw(address indexed to, uint256 amount);
}

interface IExitFeeWithdraw is IExitFeeWithdrawErrorsAndEvents {
    /// @notice withdraw accumulated fees
    function withdraw(uint256 _amount) external;
}

/*///////////////////////////////////////////////////////////////
                        Early Exit Queue
//////////////////////////////////////////////////////////////*/

interface IDynamicExitQueueEventsAndErrors {
    enum ExitFeeType {
        Fixed,
        Tiered,
        Dynamic
    }

    // Events
    event ExitFeePercentAdjusted(
        uint256 maxFeePercent,
        uint256 minFeePercent,
        uint48 minCooldown,
        ExitFeeType feeType
    );

    // Errors
    error EarlyExitDisabled();
    error MinCooldownNotMet();
    error InvalidFeeParameters();
    error FeePercentTooHigh(uint256 maxAllowed);
    error CooldownTooShort();
    error LegacyFunctionDeprecated();
}

interface IDynamicExitQueueFee is IDynamicExitQueueEventsAndErrors {
    /// @notice Calculate the absolute fee amount for exiting a specific token
    /// @param tokenId The token ID to calculate fee for
    /// @return Fee amount in underlying token units
    function calculateFee(uint256 tokenId) external view returns (uint256);

    /// @notice Check if a token has completed its full cooldown period (minimum fee applies)
    /// @param tokenId The token ID to check
    /// @return True if full cooldown elapsed, false otherwise
    function isCool(uint256 tokenId) external view returns (bool);

    /// @notice Configure linear fee decay system where fees decrease continuously over time
    /// @param _minFeePercent Fee percent after full cooldown (basis points, 0-10000)
    /// @param _maxFeePercent Fee percent immediately after minCooldown (basis points, 0-10000)
    /// @param _cooldown Total cooldown period in seconds
    /// @param _minCooldown Minimum wait before any exit allowed in seconds
    function setDynamicExitFeePercent(
        uint256 _minFeePercent,
        uint256 _maxFeePercent,
        uint48 _cooldown,
        uint48 _minCooldown
    ) external;

    /// @notice Configure two-tier fee system with early exit penalty and normal exit rate
    /// @param _baseFeePercent Fee percent for normal exits after cooldown (basis points, 0-10000)
    /// @param _earlyFeePercent Fee percent for early exits after minCooldown (basis points, 0-10000)
    /// @param _cooldown Total cooldown period in seconds
    /// @param _minCooldown Minimum wait before any exit allowed in seconds
    function setTieredExitFeePercent(
        uint256 _baseFeePercent,
        uint256 _earlyFeePercent,
        uint48 _cooldown,
        uint48 _minCooldown
    ) external;

    /// @notice Configure single fee rate system with optional early exit control
    /// @param _feePercent Fee percent for all exits (basis points, 0-10000)
    /// @param _cooldown Total cooldown period in seconds
    /// @param _allowEarlyExit If true, allow exits after minCooldown=0; if false, require full cooldown
    function setFixedExitFeePercent(
        uint256 _feePercent,
        uint48 _cooldown,
        bool _allowEarlyExit
    ) external;

    /// @notice Minimum fee percent charged after full cooldown
    /// @return Fee percent in basis points (0-10000)
    function minFeePercent() external view returns (uint256);

    /// @notice Minimum wait time before any exit is possible
    /// @return Time in seconds
    function minCooldown() external view returns (uint48);
}

/*///////////////////////////////////////////////////////////////
                        Exit Queue
//////////////////////////////////////////////////////////////*/

interface IDynamicExitQueueErrorsAndEvents is
    IExitQueueCoreErrorsAndEvents,
    IExitMinLockCooldownErrorsAndEvents,
    IDynamicExitQueueEventsAndErrors,
    IExitQueueCancelErrorsAndEvents
{}

interface IDynamicExitQueue is
    IDynamicExitQueueErrorsAndEvents,
    ITicketV2,
    IExitQueueMinLock,
    IDynamicExitQueueFee
{
    /// @notice tokenId => TicketV2
    function queue(uint256 _tokenId) external view returns (TicketV2 memory);

    /// @notice queue an exit for a given tokenId, granting the ticket to the passed holder
    /// @param _tokenId the tokenId to queue an exit for
    /// @param _ticketHolder the address that will be granted the ticket
    function queueExit(uint256 _tokenId, address _ticketHolder) external;

    /// @notice exit the queue for a given tokenId. Requires the cooldown period to have passed
    /// @return exitAmount the amount of tokens that can be withdrawn
    function exit(uint256 _tokenId) external returns (uint256 exitAmount);

    /// @notice return true if the tokenId corresponds to a valid ticket and the cooldown period has passed
    function canExit(uint256 _tokenId) external view returns (bool);

    /// @notice return the ticket holder for a given tokenId
    function ticketHolder(uint256 _tokenId) external view returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20Upgradeable {
    /**
     * @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 amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves `amount` 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 amount) 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 `amount` 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 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` 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 amount) external returns (bool);
}

/// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

/*///////////////////////////////////////////////////////////////
                        CORE FUNCTIONALITY
//////////////////////////////////////////////////////////////*/

interface ILockedBalanceIncreasing {
    struct LockedBalance {
        uint208 amount;
        uint48 start; // mirrors oz ERC20 timestamp clocks
    }
}

interface IVotingEscrowCoreErrors {
    error NoLockFound();
    error NotOwner();
    error NoOwner();
    error NotSameOwner();
    error NonExistentToken();
    error NotApprovedOrOwner();
    error ZeroAddress();
    error ZeroAmount();
    error ZeroBalance();
    error SameAddress();
    error LockNFTAlreadySet();
    error MustBe18Decimals();
    error TransferBalanceIncorrect();
    error AmountTooSmall();
    error OnlyLockNFT();
    error OnlyIVotesAdapter();
    error AddressAlreadySet();
}

interface IVotingEscrowCoreEvents {
    event MinDepositSet(uint256 minDeposit);

    event Deposit(
        address indexed depositor,
        uint256 indexed tokenId,
        uint256 indexed startTs,
        uint256 value,
        uint256 newTotalLocked
    );
    event Withdraw(
        address indexed depositor,
        uint256 indexed tokenId,
        uint256 value,
        uint256 ts,
        uint256 newTotalLocked
    );
}

interface IVotingEscrowCore is
    ILockedBalanceIncreasing,
    IVotingEscrowCoreErrors,
    IVotingEscrowCoreEvents
{
    /// @notice Address of the underying ERC20 token.
    function token() external view returns (address);

    /// @notice Address of the lock receipt NFT.
    function lockNFT() external view returns (address);

    /// @notice Total underlying tokens deposited in the contract
    function totalLocked() external view returns (uint256);

    /// @notice Get the raw locked balance for `_tokenId`
    function locked(uint256 _tokenId) external view returns (LockedBalance memory);

    /// @notice Deposit `_value` tokens for `msg.sender`
    /// @param _value Amount to deposit
    /// @return TokenId of created veNFT
    function createLock(uint256 _value) external returns (uint256);

    /// @notice Deposit `_value` tokens for `_to`
    /// @param _value Amount to deposit
    /// @param _to Address to deposit
    /// @return TokenId of created veNFT
    function createLockFor(uint256 _value, address _to) external returns (uint256);

    /// @notice Withdraw all tokens for `_tokenId`
    function withdraw(uint256 _tokenId) external;

    /// @notice helper utility for NFT checks
    function isApprovedOrOwner(address spender, uint256 tokenId) external view returns (bool);
}

/*///////////////////////////////////////////////////////////////
                        WITHDRAWAL QUEUE
//////////////////////////////////////////////////////////////*/

interface IWithdrawalQueueErrors {
    error NotTicketHolder();
    error CannotExit();
    error CannotWithdrawInSameBlock();
}

interface IWithdrawalQueueEvents {}

interface IWithdrawalQueue is IWithdrawalQueueErrors, IWithdrawalQueueEvents {
    /// @notice Enters a tokenId into the withdrawal queue by transferring to this contract and creating a ticket.
    /// @param _tokenId The tokenId to begin withdrawal for. Will be transferred to this contract before burning.
    /// @dev The user must not have active votes in the voter contract.
    function beginWithdrawal(uint256 _tokenId) external;

    /// @notice Address of the contract that manages exit queue logic for withdrawals
    function queue() external view returns (address);
}

/*///////////////////////////////////////////////////////////////
                        SWEEPER
//////////////////////////////////////////////////////////////*/

interface ISweeperEvents {
    event Sweep(address indexed to, uint256 amount);
    event SweepNFT(address indexed to, uint256 tokenId);
}

interface ISweeperErrors {
    error NothingToSweep();
}

interface ISweeper is ISweeperEvents, ISweeperErrors {
    /// @notice sweeps excess tokens from the contract to a designated address
    function sweep() external;

    function sweepNFT(uint256 _tokenId, address _to) external;
}

/*///////////////////////////////////////////////////////////////
                        DYNAMIC VOTER
//////////////////////////////////////////////////////////////*/

interface IDynamicVoterErrors {
    error NotVoter();
    error OwnershipChange();
    error AlreadyVoted();
}

interface IDynamicVoter is IDynamicVoterErrors {
    /// @notice Address of the voting contract.
    /// @dev We need to ensure votes are not left in this contract before allowing positing changes
    function voter() external view returns (address);

    /// @notice Address of the voting Escrow Curve contract that will calculate the voting power
    function curve() external view returns (address);

    /// @notice Get the voting power for _tokenId at the current timestamp
    /// @dev Returns 0 if called in the same block as a transfer.
    /// @param _tokenId .
    /// @return Voting power
    function votingPower(uint256 _tokenId) external view returns (uint256);

    /// @notice Get the voting power for _tokenId at a given timestamp
    /// @param _tokenId .
    /// @param _t Timestamp to query voting power
    /// @return Voting power
    function votingPowerAt(uint256 _tokenId, uint256 _t) external view returns (uint256);

    /// @notice Get the voting power for _account at the current timestamp
    /// Aggregtes all voting power for all tokens owned by the account
    /// @dev This cannot be used historically without token snapshots
    function votingPowerForAccount(address _account) external view returns (uint256);

    /// @notice Calculate total voting power at current timestamp
    /// @return Total voting power at current timestamp
    function totalVotingPower() external view returns (uint256);

    /// @notice Calculate total voting power at a given timestamp
    /// @param _t Timestamp to query total voting power
    /// @return Total voting power at given timestamp
    function totalVotingPowerAt(uint256 _t) external view returns (uint256);

    /// @notice See if a queried _tokenId has actively voted
    /// @return True if voted, else false
    function isVoting(uint256 _tokenId) external view returns (bool);

    /// @notice Set the global state voter
    function setVoter(address _voter) external;
}

/*///////////////////////////////////////////////////////////////
                        INCREASED ESCROW
//////////////////////////////////////////////////////////////*/

interface IVotingEscrowIncreasing is IVotingEscrowCore, IDynamicVoter, IWithdrawalQueue, ISweeper {}

/// @dev useful for testing
interface IVotingEscrowEventsStorageErrorsEvents is
    IVotingEscrowCoreErrors,
    IVotingEscrowCoreEvents,
    IWithdrawalQueueErrors,
    IWithdrawalQueueEvents,
    ILockedBalanceIncreasing,
    ISweeperEvents,
    ISweeperErrors
{}

/// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IClockUser {
    function clock() external view returns (address);
}

interface IClock {
    function epochDuration() external pure returns (uint256);

    function checkpointInterval() external pure returns (uint256);

    function voteDuration() external pure returns (uint256);

    function voteWindowBuffer() external pure returns (uint256);

    function currentEpoch() external view returns (uint256);

    function resolveEpoch(uint256 timestamp) external pure returns (uint256);

    function elapsedInEpoch() external view returns (uint256);

    function resolveElapsedInEpoch(uint256 timestamp) external pure returns (uint256);

    function epochStartsIn() external view returns (uint256);

    function resolveEpochStartsIn(uint256 timestamp) external pure returns (uint256);

    function epochStartTs() external view returns (uint256);

    function resolveEpochStartTs(uint256 timestamp) external pure returns (uint256);

    function votingActive() external view returns (bool);

    function resolveVotingActive(uint256 timestamp) external pure returns (bool);

    function epochVoteStartsIn() external view returns (uint256);

    function resolveEpochVoteStartsIn(uint256 timestamp) external pure returns (uint256);

    function epochVoteStartTs() external view returns (uint256);

    function resolveEpochVoteStartTs(uint256 timestamp) external pure returns (uint256);

    function epochVoteEndsIn() external view returns (uint256);

    function resolveEpochVoteEndsIn(uint256 timestamp) external pure returns (uint256);

    function epochVoteEndTs() external view returns (uint256);

    function resolveEpochVoteEndTs(uint256 timestamp) external pure returns (uint256);

    function epochNextCheckpointIn() external view returns (uint256);

    function resolveEpochNextCheckpointIn(uint256 timestamp) external pure returns (uint256);

    function epochNextCheckpointTs() external view returns (uint256);

    function resolveEpochNextCheckpointTs(uint256 timestamp) external pure returns (uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20Upgradeable.sol";
import "../extensions/IERC20PermitUpgradeable.sol";
import "../../../utils/AddressUpgradeable.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 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 SafeERC20Upgradeable {
    using AddressUpgradeable for address;

    /**
     * @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(IERC20Upgradeable token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, 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(IERC20Upgradeable token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20Upgradeable token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 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.
     */
    function safeIncreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Compatible with tokens that require the approval to be set to
     * 0 before setting it to a non-zero value.
     */
    function forceApprove(IERC20Upgradeable token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

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

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20PermitUpgradeable token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @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).
     */
    function _callOptionalReturn(IERC20Upgradeable token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @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 silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20Upgradeable token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && AddressUpgradeable.isContract(address(token));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/UUPSUpgradeable.sol)

pragma solidity ^0.8.0;

import "../../interfaces/draft-IERC1822Upgradeable.sol";
import "../ERC1967/ERC1967UpgradeUpgradeable.sol";
import "./Initializable.sol";

/**
 * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
 * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
 *
 * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
 * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
 * `UUPSUpgradeable` with a custom implementation of upgrades.
 *
 * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
 *
 * _Available since v4.1._
 */
abstract contract UUPSUpgradeable is Initializable, IERC1822ProxiableUpgradeable, ERC1967UpgradeUpgradeable {
    function __UUPSUpgradeable_init() internal onlyInitializing {
    }

    function __UUPSUpgradeable_init_unchained() internal onlyInitializing {
    }
    /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
    address private immutable __self = address(this);

    /**
     * @dev Check that the execution is being performed through a delegatecall call and that the execution context is
     * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case
     * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
     * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
     * fail.
     */
    modifier onlyProxy() {
        require(address(this) != __self, "Function must be called through delegatecall");
        require(_getImplementation() == __self, "Function must be called through active proxy");
        _;
    }

    /**
     * @dev Check that the execution is not being performed through a delegate call. This allows a function to be
     * callable on the implementing contract but not through proxies.
     */
    modifier notDelegated() {
        require(address(this) == __self, "UUPSUpgradeable: must not be called through delegatecall");
        _;
    }

    /**
     * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the
     * implementation. It is used to validate the implementation's compatibility when performing an upgrade.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier.
     */
    function proxiableUUID() external view virtual override notDelegated returns (bytes32) {
        return _IMPLEMENTATION_SLOT;
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     *
     * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
     */
    function upgradeTo(address newImplementation) public virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, new bytes(0), false);
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
     * encoded in `data`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     *
     * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
     */
    function upgradeToAndCall(address newImplementation, bytes memory data) public payable virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, data, true);
    }

    /**
     * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by
     * {upgradeTo} and {upgradeToAndCall}.
     *
     * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}.
     *
     * ```solidity
     * function _authorizeUpgrade(address) internal override onlyOwner {}
     * ```
     */
    function _authorizeUpgrade(address newImplementation) internal virtual;

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity ^0.8.8;

import {ContextUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol";

import {IDAO} from "../../dao/IDAO.sol";
import {_auth} from "./auth.sol";

/// @title DaoAuthorizableUpgradeable
/// @author Aragon X - 2022-2023
/// @notice An abstract contract providing a meta-transaction compatible modifier for upgradeable or cloneable contracts to authorize function calls through an associated DAO.
/// @dev Make sure to call `__DaoAuthorizableUpgradeable_init` during initialization of the inheriting contract.
/// @custom:security-contact [email protected]
abstract contract DaoAuthorizableUpgradeable is ContextUpgradeable {
    /// @notice The associated DAO managing the permissions of inheriting contracts.
    IDAO private dao_;

    /// @notice Initializes the contract by setting the associated DAO.
    /// @param _dao The associated DAO address.
    // solhint-disable-next-line func-name-mixedcase
    function __DaoAuthorizableUpgradeable_init(IDAO _dao) internal onlyInitializing {
        dao_ = _dao;
    }

    /// @notice Returns the DAO contract.
    /// @return The DAO contract.
    function dao() public view returns (IDAO) {
        return dao_;
    }

    /// @notice A modifier to make functions on inheriting contracts authorized. Permissions to call the function are checked through the associated DAO's permission manager.
    /// @param _permissionId The permission identifier required to call the method this modifier is applied to.
    modifier auth(bytes32 _permissionId) {
        _auth(dao_, address(this), _msgSender(), _permissionId, _msgData());
        _;
    }

    /// @notice This empty reserved space is put in place to allow future versions to add new variables without shifting down storage in the inheritance chain (see [OpenZeppelin's guide about storage gaps](https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps)).
    uint256[49] private __gap;
}

/// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IExitQueueCoreErrorsAndEvents {
    error OnlyEscrow();
    error AlreadyQueued();
    error ZeroAddress();
    error CannotExit();
    error NoLockBalance();
    event ExitQueued(uint256 indexed tokenId, address indexed holder, uint256 exitDate);
    event Exit(uint256 indexed tokenId, uint256 fee);
}

interface ITicket {
    struct Ticket {
        address holder;
        uint256 exitDate;
    }
}

/*///////////////////////////////////////////////////////////////
                        Fee Collection
//////////////////////////////////////////////////////////////*/

interface IExitQueueFeeErrorsAndEvents {
    error FeeTooHigh(uint256 maxFee);

    event Withdraw(address indexed to, uint256 amount);
    event FeePercentSet(uint256 feePercent);
}

interface IExitQueueFee is IExitQueueFeeErrorsAndEvents {
    /// @notice optional fee charged for exiting the queue
    function feePercent() external view returns (uint256);

    /// @notice The exit queue manager can set the fee
    function setFeePercent(uint256 _fee) external;

    /// @notice withdraw accumulated fees
    function withdraw(uint256 _amount) external;
}

/*///////////////////////////////////////////////////////////////
                        Cooldown
//////////////////////////////////////////////////////////////*/

interface IExitQueueCooldownErrorsAndEvents {
    error CooldownTooHigh();

    event CooldownSet(uint48 cooldown);
}

interface IExitQueueCooldown is IExitQueueCooldownErrorsAndEvents {
    /// @notice time in seconds between exit and withdrawal
    function cooldown() external view returns (uint48);

    /// @notice The exit queue manager can set the cooldown period
    /// @param _cooldown time in seconds between exit and withdrawal
    function setCooldown(uint48 _cooldown) external;
}

/*///////////////////////////////////////////////////////////////
                        Min Lock
//////////////////////////////////////////////////////////////*/

interface IExitMinLockCooldownErrorsAndEvents {
    event MinLockSet(uint48 minLock);
    error MinLockOutOfBounds();
    error MinLockNotReached(uint256 tokenId, uint48 minLock, uint48 earliestExitDate);
}

interface IExitQueueMinLock is IExitMinLockCooldownErrorsAndEvents {
    /// @notice minimum time from the original lock date before one can enter the queue
    function minLock() external view returns (uint48);

    /// @notice The exit queue manager can set the minimum lock time
    function setMinLock(uint48 _cooldown) external;
}

/*///////////////////////////////////////////////////////////////
                        Exit Queue
//////////////////////////////////////////////////////////////*/

interface IExitQueueCancelErrorsAndEvents {
    error CannotCancelExit();
    event ExitCancelled(uint256 indexed tokenId, address indexed holder);
}

interface IExitQueueCancel {
    function cancelExit(uint256 _tokenId) external;
}

/*///////////////////////////////////////////////////////////////
                        Exit Queue
//////////////////////////////////////////////////////////////*/

interface IExitQueueErrorsAndEvents is
    IExitQueueCoreErrorsAndEvents,
    IExitQueueFeeErrorsAndEvents,
    IExitQueueCooldownErrorsAndEvents,
    IExitMinLockCooldownErrorsAndEvents,
    IExitQueueCancelErrorsAndEvents
{}

interface IExitQueue is
    IExitQueueErrorsAndEvents,
    ITicket,
    IExitQueueFee,
    IExitQueueCooldown,
    IExitQueueMinLock,
    IExitQueueCancel
{
    /// @notice tokenId => Ticket
    function queue(uint256 _tokenId) external view returns (Ticket memory);

    /// @notice queue an exit for a given tokenId, granting the ticket to the passed holder
    /// @param _tokenId the tokenId to queue an exit for
    /// @param _ticketHolder the address that will be granted the ticket
    function queueExit(uint256 _tokenId, address _ticketHolder) external;

    function cancelExit(uint256 _tokenId) external;

    /// @notice exit the queue for a given tokenId. Requires the cooldown period to have passed
    /// @return exitAmount the amount of tokens that can be withdrawn
    function exit(uint256 _tokenId) external returns (uint256 exitAmount);

    /// @return true if the tokenId corresponds to a valid ticket and the cooldown period has passed
    function canExit(uint256 _tokenId) external view returns (bool);

    /// @return the ticket holder for a given tokenId
    function ticketHolder(uint256 _tokenId) external view returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20PermitUpgradeable {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @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/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @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, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * 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.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @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`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)

pragma solidity ^0.8.0;

/**
 * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
 * proxy whose upgrades are fully controlled by the current implementation.
 */
interface IERC1822ProxiableUpgradeable {
    /**
     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
     * address.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy.
     */
    function proxiableUUID() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/ERC1967/ERC1967Upgrade.sol)

pragma solidity ^0.8.2;

import "../beacon/IBeaconUpgradeable.sol";
import "../../interfaces/IERC1967Upgradeable.sol";
import "../../interfaces/draft-IERC1822Upgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/StorageSlotUpgradeable.sol";
import "../utils/Initializable.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 */
abstract contract ERC1967UpgradeUpgradeable is Initializable, IERC1967Upgradeable {
    function __ERC1967Upgrade_init() internal onlyInitializing {
    }

    function __ERC1967Upgrade_init_unchained() internal onlyInitializing {
    }
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal {
        _upgradeTo(newImplementation);
        if (data.length > 0 || forceCall) {
            AddressUpgradeable.functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallUUPS(address newImplementation, bytes memory data, bool forceCall) internal {
        // Upgrades from old implementations will perform a rollback test. This test requires the new
        // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
        // this special case will break upgrade paths from old UUPS implementation to new ones.
        if (StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT).value) {
            _setImplementation(newImplementation);
        } else {
            try IERC1822ProxiableUpgradeable(newImplementation).proxiableUUID() returns (bytes32 slot) {
                require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
            } catch {
                revert("ERC1967Upgrade: new implementation is not UUPS");
            }
            _upgradeToAndCall(newImplementation, data, forceCall);
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(AddressUpgradeable.isContract(newBeacon), "ERC1967: new beacon is not a contract");
        require(
            AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            AddressUpgradeable.functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data);
        }
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
     * constructor.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: setting the version to 255 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized != type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _initializing;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity ^0.8.8;

import {IDAO} from "../../dao/IDAO.sol";

/// @title DAO Authorization Utilities
/// @author Aragon X - 2022-2024
/// @notice Provides utility functions for verifying if a caller has specific permissions in an associated DAO.
/// @custom:security-contact [email protected]

/// @notice Thrown if a call is unauthorized in the associated DAO.
/// @param dao The associated DAO.
/// @param where The context in which the authorization reverted.
/// @param who The address (EOA or contract) missing the permission.
/// @param permissionId The permission identifier.
error DaoUnauthorized(address dao, address where, address who, bytes32 permissionId);

/// @notice A free function checking if a caller is granted permissions on a target contract via a permission identifier that redirects the approval to a `PermissionCondition` if this was specified in the setup.
/// @param _where The address of the target contract for which `who` receives permission.
/// @param _who The address (EOA or contract) owning the permission.
/// @param _permissionId The permission identifier.
/// @param _data The optional data passed to the `PermissionCondition` registered.
function _auth(
    IDAO _dao,
    address _where,
    address _who,
    bytes32 _permissionId,
    bytes calldata _data
) view {
    if (!_dao.hasPermission(_where, _who, _permissionId, _data))
        revert DaoUnauthorized({
            dao: address(_dao),
            where: _where,
            who: _who,
            permissionId: _permissionId
        });
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)

pragma solidity ^0.8.0;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeaconUpgradeable {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC1967.sol)

pragma solidity ^0.8.0;

/**
 * @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC.
 *
 * _Available since v4.8.3._
 */
interface IERC1967Upgradeable {
    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Emitted when the beacon is changed.
     */
    event BeaconUpgraded(address indexed beacon);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```solidity
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, `uint256`._
 * _Available since v4.9 for `string`, `bytes`._
 */
library StorageSlotUpgradeable {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` with member `value` located at `slot`.
     */
    function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
     */
    function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` with member `value` located at `slot`.
     */
    function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
     */
    function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }
}

{
  "remappings": [
    "@clock/=lib/ve-governance/src/clock/",
    "@curve/=lib/ve-governance/src/curve/",
    "@delegation/=lib/ve-governance/src/delegation/",
    "@escrow-interfaces/=lib/ve-governance/src/escrow/increasing/interfaces/",
    "@escrow/=lib/ve-governance/src/escrow/",
    "@factory/=lib/ve-governance/src/factory/",
    "@foundry-upgrades/=lib/ve-governance/lib/openzeppelin-foundry-upgrades/src/",
    "@helpers/=lib/ve-governance/test/helpers/",
    "@interfaces/=lib/ve-governance/src/interfaces/",
    "@libs/=lib/ve-governance/src/libs/",
    "@lock/=lib/ve-governance/src/lock/",
    "@mocks/=lib/ve-governance/test/mocks/",
    "@openzeppelin/contracts-upgradeable/=lib/ve-governance/lib/openzeppelin-contracts-upgradeable/contracts/",
    "@openzeppelin/contracts/=lib/ve-governance/lib/openzeppelin-contracts/contracts/",
    "@queue/=lib/ve-governance/src/queue/",
    "@setup/=lib/ve-governance/src/setup/",
    "@solmate/=lib/ve-governance/lib/solmate/src/",
    "@utils/=lib/ve-governance/src/utils/",
    "@voting/=lib/ve-governance/src/voting/",
    "@ve/=lib/ve-governance/src/",
    "@aragon/protocol-factory/=lib/protocol-factory/",
    "@openzeppelin/openzeppelin-foundry-upgrades/=lib/staged-proposal-processor-plugin/node_modules/@openzeppelin/openzeppelin-foundry-upgrades/src/",
    "@ensdomains/buffer/=lib/protocol-factory/lib/buffer/",
    "@ensdomains/ens-contracts/=lib/protocol-factory/lib/ens-contracts/",
    "@merkl/=lib/merkl/contracts/",
    "@aragon/osx-commons-contracts/=lib/osx-commons/contracts/",
    "@aragon/osx/=lib/ve-governance/lib/osx/packages/contracts/src/",
    "@aragon/multisig-plugin/=lib/protocol-factory/lib/multisig-plugin/packages/contracts/src/",
    "@aragon/admin-plugin/=lib/protocol-factory/lib/admin-plugin/packages/contracts/src/",
    "@aragon/admin/=lib/ve-governance/lib/osx/packages/contracts/src/plugins/governance/admin/",
    "@aragon/multisig/=lib/ve-governance/lib/multisig-plugin/packages/contracts/",
    "@aragon/staged-proposal-processor-plugin/=lib/protocol-factory/lib/staged-proposal-processor-plugin/src/",
    "@aragon/token-voting-plugin/=lib/protocol-factory/lib/token-voting-plugin/src/",
    "@test/=lib/ve-governance/test/",
    "admin-plugin/=lib/protocol-factory/lib/admin-plugin/",
    "buffer/=lib/protocol-factory/lib/buffer/contracts/",
    "ds-test/=lib/ve-governance/lib/ds-test/src/",
    "ens-contracts/=lib/ve-governance/lib/ens-contracts/contracts/",
    "erc4626-tests/=lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "halmos-cheatcodes/=lib/openzeppelin-contracts-upgradeable/lib/halmos-cheatcodes/src/",
    "merkl/=lib/merkl/",
    "multisig-plugin/=lib/ve-governance/lib/multisig-plugin/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "openzeppelin-foundry-upgrades/=lib/ve-governance/lib/openzeppelin-foundry-upgrades/src/",
    "openzeppelin/=lib/ve-governance/lib/openzeppelin-contracts-upgradeable/contracts/",
    "osx-commons/=lib/osx-commons/",
    "osx/=lib/osx/",
    "oz/=lib/merkl/node_modules/@openzeppelin/contracts/",
    "plugin-version-1.3/=lib/protocol-factory/lib/token-voting-plugin/lib/plugin-version-1.3/",
    "protocol-factory/=lib/protocol-factory/",
    "solidity-stringutils/=lib/protocol-factory/lib/staged-proposal-processor-plugin/node_modules/solidity-stringutils/",
    "solmate/=lib/ve-governance/lib/solmate/src/",
    "staged-proposal-processor-plugin/=lib/protocol-factory/lib/staged-proposal-processor-plugin/src/",
    "token-voting-plugin/=lib/protocol-factory/lib/token-voting-plugin/",
    "utils/=lib/ve-governance/test/utils/",
    "ve-governance/=lib/ve-governance/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 2000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "none",
    "appendCBOR": false
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "cancun",
  "viaIR": false
}

• No Contract Security Audit Submitted- Submit Audit Here

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