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// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.18;

import { AccessControlEnumerable } from "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { Errors } from "src/libraries/Errors.sol";
import { IStakingDelegateRewards } from "src/interfaces/IStakingDelegateRewards.sol";
import { IYearnStakingDelegate } from "src/interfaces/IYearnStakingDelegate.sol";

/**
 * @title Staking Delegate Rewards
 * @notice Contract for managing staking rewards with functionality to update balances, notify new rewards, and recover
 * tokens.
 * @dev Inherits from IStakingDelegateRewards and AccessControlEnumerable.
 */
contract StakingDelegateRewards is IStakingDelegateRewards, AccessControlEnumerable {
    // Libraries
    using SafeERC20 for IERC20;

    // Constants
    /// @dev Default duration of rewards period in seconds (7 days).
    uint256 private constant _DEFAULT_DURATION = 7 days;
    /// @dev Role identifier used for protecting functions with timelock access.
    bytes32 public constant TIMELOCK_ROLE = keccak256("TIMELOCK_ROLE");
    // slither-disable-start naming-convention
    /// @dev Address of the token used for rewards, immutable.
    address private immutable _REWARDS_TOKEN;
    /// @dev Address of the staking delegate, immutable.
    address private immutable _STAKING_DELEGATE;
    // slither-disable-end naming-convention

    // State variables
    /// @dev Mapping of staking tokens to the period end timestamp.
    mapping(address => uint256) public periodFinish;
    /// @dev Mapping of staking tokens to their respective reward rate.
    mapping(address => uint256) public rewardRate;
    /// @dev Mapping of staking tokens to their rewards duration.
    mapping(address => uint256) public rewardsDuration;
    /// @dev Mapping of staking tokens to the last update time for rewards.
    mapping(address => uint256) public lastUpdateTime;
    /// @dev Mapping of staking tokens to the accumulated reward per token.
    mapping(address => uint256) public rewardPerTokenStored;
    /// @dev Mapping of staking tokens to the leftover rewards.
    mapping(address => uint256) public leftOver;
    /// @dev Mapping of staking tokens and users to the paid-out reward per token.
    mapping(address => mapping(address => uint256)) public userRewardPerTokenPaid;
    /// @dev Mapping of staking tokens and users to their respective rewards.
    mapping(address => mapping(address => uint256)) public rewards;
    /// @dev Mapping of staking tokens to their reward distributors.
    mapping(address => address) public rewardDistributors;
    /// @dev Mapping of users to their designated reward receivers.
    mapping(address => address) public rewardReceiver;

    // Events
    /**
     * @notice Emitted when rewards are added for a staking token.
     * @param stakingToken The staking token for which rewards are added.
     * @param rewardAmount The amount of rewards added.
     * @param rewardRate The rate at which rewards will be distributed.
     * @param start The start time of the reward period.
     * @param end The end time of the reward period.
     */
    event RewardAdded(
        address indexed stakingToken, uint256 rewardAmount, uint256 rewardRate, uint256 start, uint256 end
    );
    /**
     * @notice Emitted when a staking token is added to the rewards program.
     * @param stakingToken The staking token that was added.
     * @param rewardDistributioner The address authorized to distribute rewards for the staking token.
     */
    event StakingTokenAdded(address indexed stakingToken, address rewardDistributioner);
    /**
     * @notice Emitted when a user's balance is updated for a staking token.
     * @param user The user whose balance was updated.
     * @param stakingToken The staking token for which the balance was updated.
     */
    event UserBalanceUpdated(address indexed user, address indexed stakingToken);
    /**
     * @notice Emitted when rewards are paid out to a user for a staking token.
     * @param user The user who received the rewards.
     * @param stakingToken The staking token for which the rewards were paid.
     * @param reward The amount of rewards paid.
     * @param receiver The address that received the rewards.
     */
    event RewardPaid(address indexed user, address indexed stakingToken, uint256 reward, address receiver);
    /**
     * @notice Emitted when the rewards duration is updated for a staking token.
     * @param stakingToken The staking token for which the duration was updated.
     * @param newDuration The new duration for rewards.
     */
    event RewardsDurationUpdated(address indexed stakingToken, uint256 newDuration);
    /**
     * @notice Emitted when tokens are recovered from the contract.
     * @param token The address of the token that was recovered.
     * @param amount The amount of the token that was recovered.
     */
    event Recovered(address token, uint256 amount);
    /**
     * @notice Emitted when a user sets a reward receiver address.
     * @param user The user who set the reward receiver.
     * @param receiver The address set as the reward receiver.
     */
    event RewardReceiverSet(address indexed user, address receiver);

    /**
     * @notice Constructor that sets the rewards token and staking delegate addresses.
     * @param rewardsToken_ The ERC20 token to be used as the rewards token.
     * @param stakingDelegate_ The address of the staking delegate contract.
     */
    // slither-disable-next-line locked-ether
    constructor(address rewardsToken_, address stakingDelegate_, address admin, address timeLock) payable {
        // Checks
        // Check for zero addresses
        if (rewardsToken_ == address(0) || stakingDelegate_ == address(0)) {
            revert Errors.ZeroAddress();
        }

        _grantRole(DEFAULT_ADMIN_ROLE, admin);
        _grantRole(TIMELOCK_ROLE, timeLock); // This role must be revoked after granting it to the timelock
        _setRoleAdmin(TIMELOCK_ROLE, TIMELOCK_ROLE); // Only those with the timelock role can grant the timelock role
        _REWARDS_TOKEN = rewardsToken_;
        _STAKING_DELEGATE = stakingDelegate_;
    }

    /**
     * @notice Claims reward for a given staking token.
     * @param stakingToken The address of the staking token.
     */
    function getReward(address stakingToken) external {
        _getReward(msg.sender, stakingToken);
    }

    /**
     * @notice Claims reward for a given user and staking token.
     * @param user The address of the user to claim rewards for.
     * @param stakingToken The address of the staking token.
     */
    function getReward(address user, address stakingToken) external {
        _getReward(user, stakingToken);
    }

    /**
     * @notice Sets the reward receiver who will receive your rewards instead.
     * @dev This can be set to the zero address to receive rewards directly.
     * @param receiver The address of the reward receiver.
     */
    function setRewardReceiver(address receiver) external {
        rewardReceiver[msg.sender] = receiver;
        emit RewardReceiverSet(msg.sender, receiver);
    }

    /**
     * @notice Notifies a new reward amount for a given staking token.
     * @param stakingToken The address of the staking token to notify the reward for.
     * @param reward The amount of the new reward.
     */
    function notifyRewardAmount(address stakingToken, uint256 reward) external {
        if (msg.sender != rewardDistributors[stakingToken]) {
            revert Errors.OnlyRewardDistributorCanNotifyRewardAmount();
        }
        _updateReward(address(0), stakingToken);

        uint256 periodFinish_ = periodFinish[stakingToken];
        // slither-disable-next-line similar-names
        uint256 rewardDuration_ = rewardsDuration[stakingToken];
        uint256 leftOverRewards = leftOver[stakingToken];
        // slither-disable-next-line timestamp
        if (block.timestamp < periodFinish_) {
            uint256 remainingTime = periodFinish_ - block.timestamp;
            leftOverRewards = leftOverRewards + (remainingTime * rewardRate[stakingToken]);
        }
        uint256 newRewardAmount = reward + leftOverRewards;
        uint256 newRewardRate = newRewardAmount / rewardDuration_;
        // slither-disable-next-line incorrect-equality
        if (newRewardRate == 0) {
            revert Errors.RewardRateTooLow();
        }
        uint256 newPeriodFinish = block.timestamp + rewardDuration_;
        emit RewardAdded(stakingToken, reward, newRewardRate, block.timestamp, newPeriodFinish);
        rewardRate[stakingToken] = newRewardRate;
        lastUpdateTime[stakingToken] = block.timestamp;
        periodFinish[stakingToken] = newPeriodFinish;
        // slither-disable-next-line weak-prng
        leftOver[stakingToken] = newRewardAmount % rewardDuration_;
        IERC20(_REWARDS_TOKEN).safeTransferFrom(msg.sender, address(this), reward);
    }

    /**
     * @notice Updates the balance of a user for a given staking token.
     * @param user The address of the user to update the balance for.
     * @param stakingToken The address of the staking token.
     * @param currentUserBalance The current balance of staking token of the user.
     * @param currentTotalDeposited The current total deposited amount of the staking token.
     */
    function updateUserBalance(
        address user,
        address stakingToken,
        uint256 currentUserBalance,
        uint256 currentTotalDeposited
    )
        external
    {
        if (msg.sender != _STAKING_DELEGATE) {
            revert Errors.OnlyStakingDelegateCanUpdateUserBalance();
        }
        _updateReward(user, stakingToken, currentUserBalance, currentTotalDeposited);
        emit UserBalanceUpdated(user, stakingToken);
    }

    /**
     * @notice Adds a new staking token to the contract.
     * @param stakingToken The address of the staking token to add.
     * @param rewardDistributioner The address allowed to notify new rewards for the staking token.
     */
    function addStakingToken(address stakingToken, address rewardDistributioner) external {
        if (msg.sender != _STAKING_DELEGATE) {
            revert Errors.OnlyStakingDelegateCanAddStakingToken();
        }
        if (rewardDistributors[stakingToken] != address(0)) {
            revert Errors.StakingTokenAlreadyAdded();
        }
        rewardDistributors[stakingToken] = rewardDistributioner;
        rewardsDuration[stakingToken] = _DEFAULT_DURATION;
        emit StakingTokenAdded(stakingToken, rewardDistributioner);
        emit RewardsDurationUpdated(stakingToken, _DEFAULT_DURATION);
    }

    /**
     * @notice Sets the duration of the rewards period for a given staking token.
     * @param stakingToken The address of the staking token to set the rewards duration for.
     * @param rewardsDuration_ The new duration of the rewards period.
     */
    function setRewardsDuration(address stakingToken, uint256 rewardsDuration_) external onlyRole(TIMELOCK_ROLE) {
        if (rewardsDuration_ == 0) {
            revert Errors.RewardDurationCannotBeZero();
        }
        if (rewardsDuration[stakingToken] == 0) {
            revert Errors.StakingTokenNotAdded();
        }
        // slither-disable-next-line timestamp
        if (block.timestamp <= periodFinish[stakingToken]) {
            revert Errors.PreviousRewardsPeriodNotCompleted();
        }
        rewardsDuration[stakingToken] = rewardsDuration_;
        emit RewardsDurationUpdated(stakingToken, rewardsDuration_);
    }

    /**
     * @notice Allows recovery of ERC20 tokens other than the staking and rewards tokens.
     * @dev Added to support recovering LP Rewards from other systems such as BAL to be distributed to holders
     * @param tokenAddress The address of the token to recover.
     * @param to The address to send the recovered tokens to.
     * @param tokenAmount The amount of tokens to recover.
     */
    function recoverERC20(
        address tokenAddress,
        address to,
        uint256 tokenAmount
    )
        external
        onlyRole(DEFAULT_ADMIN_ROLE)
    {
        if (tokenAddress == _REWARDS_TOKEN || rewardDistributors[tokenAddress] != address(0)) {
            revert Errors.RescueNotAllowed();
        }
        emit Recovered(tokenAddress, tokenAmount);
        IERC20(tokenAddress).safeTransfer(to, tokenAmount);
    }

    /**
     * @notice Calculates the total reward for a given duration for a staking token.
     * @param stakingToken The address of the staking token.
     * @return The total reward for the given duration.
     */
    function getRewardForDuration(address stakingToken) external view returns (uint256) {
        return rewardRate[stakingToken] * rewardsDuration[stakingToken];
    }

    /**
     * @notice Returns the address of the rewards token.
     * @return The address of the rewards token.
     */
    function rewardToken() external view returns (address) {
        return _REWARDS_TOKEN;
    }

    /**
     * @notice Returns the address of the staking delegate.
     * @return The address of the staking delegate.
     */
    function stakingDelegate() external view returns (address) {
        return _STAKING_DELEGATE;
    }

    /**
     * @notice Calculates the last time a reward was applicable for the given staking token.
     * @param stakingToken The address of the staking token.
     * @return The last applicable timestamp for rewards.
     */
    function lastTimeRewardApplicable(address stakingToken) public view returns (uint256) {
        uint256 finish = periodFinish[stakingToken];
        // slither-disable-next-line timestamp
        return block.timestamp < finish ? block.timestamp : finish;
    }

    /**
     * @notice Calculates the accumulated reward per token stored.
     * @param stakingToken The address of the staking token.
     * @return The accumulated reward per token.
     */
    function rewardPerToken(address stakingToken) external view returns (uint256) {
        return _rewardPerToken(stakingToken, IYearnStakingDelegate(_STAKING_DELEGATE).totalDeposited(stakingToken));
    }

    function _rewardPerToken(address stakingToken, uint256 currentTotalDeposited) internal view returns (uint256) {
        if (currentTotalDeposited == 0) {
            return rewardPerTokenStored[stakingToken];
        }
        return rewardPerTokenStored[stakingToken]
            + (lastTimeRewardApplicable(stakingToken) - lastUpdateTime[stakingToken]) * rewardRate[stakingToken] * 1e18
                / currentTotalDeposited;
    }

    /**
     * @notice Calculates the amount of reward earned by an account for a given staking token.
     * @param account The address of the user's account.
     * @param stakingToken The address of the staking token.
     * @return The amount of reward earned.
     */
    function earned(address account, address stakingToken) external view returns (uint256) {
        return _earned(
            account,
            stakingToken,
            IYearnStakingDelegate(_STAKING_DELEGATE).balanceOf(account, stakingToken),
            _rewardPerToken(stakingToken, IYearnStakingDelegate(_STAKING_DELEGATE).totalDeposited(stakingToken))
        );
    }

    function _earned(
        address account,
        address stakingToken,
        uint256 userBalance,
        uint256 rewardPerToken_
    )
        internal
        view
        returns (uint256)
    {
        return rewards[account][stakingToken]
            + (userBalance * (rewardPerToken_ - userRewardPerTokenPaid[account][stakingToken]) / 1e18);
    }

    /**
     * @notice Updates the reward state for a given user and staking token. If there are any rewards to be paid out,
     * they are sent to the receiver that was set by the user. (Defaults to the user's address if not set)
     * @param user The address of the user to update rewards for.
     * @param stakingToken The address of the staking token.
     */
    function _getReward(address user, address stakingToken) internal {
        _updateReward(user, stakingToken);
        uint256 reward = rewards[user][stakingToken];
        if (reward > 0) {
            rewards[user][stakingToken] = 0;
            address receiver = rewardReceiver[user];
            if (receiver == address(0)) {
                receiver = user;
            }
            emit RewardPaid(user, stakingToken, reward, receiver);
            IERC20(_REWARDS_TOKEN).safeTransfer(receiver, reward);
        }
    }

    function _updateReward(address account, address stakingToken) internal {
        _updateReward(
            account,
            stakingToken,
            IYearnStakingDelegate(_STAKING_DELEGATE).balanceOf(account, stakingToken),
            IYearnStakingDelegate(_STAKING_DELEGATE).totalDeposited(stakingToken)
        );
    }

    /**
     * @dev Updates reward state for a given user and staking token.
     * @param account The address of the user to update rewards for.
     * @param stakingToken The address of the staking token.
     */
    function _updateReward(
        address account,
        address stakingToken,
        uint256 currentUserBalance,
        uint256 currentTotalDeposited
    )
        internal
    {
        uint256 rewardPerToken_ = _rewardPerToken(stakingToken, currentTotalDeposited);
        rewardPerTokenStored[stakingToken] = rewardPerToken_;
        lastUpdateTime[stakingToken] = lastTimeRewardApplicable(stakingToken);
        if (account != address(0)) {
            rewards[account][stakingToken] = _earned(account, stakingToken, currentUserBalance, rewardPerToken_);
            userRewardPerTokenPaid[account][stakingToken] = rewardPerToken_;
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControlEnumerable.sol";
import "./AccessControl.sol";
import "../utils/structs/EnumerableSet.sol";

/**
 * @dev Extension of {AccessControl} that allows enumerating the members of each role.
 */
abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl {
    using EnumerableSet for EnumerableSet.AddressSet;

    mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControlEnumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) public view virtual override returns (address) {
        return _roleMembers[role].at(index);
    }

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) public view virtual override returns (uint256) {
        return _roleMembers[role].length();
    }

    /**
     * @dev Overload {_grantRole} to track enumerable memberships
     */
    function _grantRole(bytes32 role, address account) internal virtual override {
        super._grantRole(role, account);
        _roleMembers[role].add(account);
    }

    /**
     * @dev Overload {_revokeRole} to track enumerable memberships
     */
    function _revokeRole(bytes32 role, address account) internal virtual override {
        super._revokeRole(role, account);
        _roleMembers[role].remove(account);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.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 SafeERC20 {
    using Address 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(IERC20 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(IERC20 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(IERC20 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(IERC20 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(IERC20 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. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 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(
        IERC20Permit 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(IERC20 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(IERC20 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))) && Address.isContract(address(token));
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.18;

/// @title Errors
/// @notice Library containing all custom errors the protocol may revert with.
library Errors {
    //// MASTER REGISTRY ////

    /// @notice Thrown when the registry name given is empty.
    error NameEmpty();

    /// @notice Thrown when the registry address given is empty.
    error AddressEmpty();

    /// @notice Thrown when the registry name is found when calling addRegistry().
    error RegistryNameFound(bytes32 name);

    /// @notice Thrown when the registry name is not found but is expected to be.
    error RegistryNameNotFound(bytes32 name);

    /// @notice Thrown when the registry address is not found but is expected to be.
    error RegistryAddressNotFound(address registryAddress);

    /// @notice Thrown when the registry name and version is not found but is expected to be.
    error RegistryNameVersionNotFound(bytes32 name, uint256 version);

    /// @notice Thrown when a duplicate registry address is found.
    error DuplicateRegistryAddress(address registryAddress);

    //// YEARN STAKING DELEGATE ////

    /// @notice Error for when an address is zero which is not allowed.
    error ZeroAddress();

    /// @notice Error for when an amount is zero which is not allowed.
    error ZeroAmount();

    /// @notice Error for when a reward split is invalid.
    error InvalidRewardSplit();

    /// @notice Error for when the treasury percentage is too high.
    error TreasuryPctTooHigh();

    /// @notice Error for when perpetual lock is enabled and an action cannot be taken.
    error PerpetualLockEnabled();

    /// @notice Error for when perpetual lock is disabled and an action cannot be taken.
    error PerpetualLockDisabled();

    /// @notice Error for when swap and lock settings are not set.
    error SwapAndLockNotSet();

    /// @notice Error for when gauge rewards have already been added.
    error GaugeRewardsAlreadyAdded();

    /// @notice Error for when gauge rewards have not yet been added.
    error GaugeRewardsNotYetAdded();

    /// @notice Error for when execution of an action is not allowed.
    error ExecutionNotAllowed();

    /// @notice Error for when execution of an action has failed.
    error ExecutionFailed();

    /// @notice Error for when Cove YFI reward forwarder is not set.
    error CoveYfiRewardForwarderNotSet();

    //// STAKING DELEGATE REWARDS ////

    /// @notice Error for when a rescue operation is not allowed.
    error RescueNotAllowed();

    /// @notice Error for when the previous rewards period has not been completed.
    error PreviousRewardsPeriodNotCompleted();

    /// @notice Error for when only the staking delegate can update a user's balance.
    error OnlyStakingDelegateCanUpdateUserBalance();

    /// @notice Error for when only the staking delegate can add a staking token.
    error OnlyStakingDelegateCanAddStakingToken();

    /// @notice Error for when only the reward distributor can notify the reward amount.
    error OnlyRewardDistributorCanNotifyRewardAmount();

    /// @notice Error for when a staking token has already been added.
    error StakingTokenAlreadyAdded();

    /// @notice Error for when a staking token has not been added.
    error StakingTokenNotAdded();

    /// @notice Error for when the reward rate is too low.
    error RewardRateTooLow();

    /// @notice Error for when the reward duration cannot be zero.
    error RewardDurationCannotBeZero();

    //// WRAPPED STRATEGY CURVE SWAPPER ////

    /// @notice Error for when slippage is too high.
    error SlippageTooHigh();

    /// @notice Error for when invalid tokens are received.
    error InvalidTokensReceived();

    /// CURVE ROUTER SWAPPER ///

    /*
     * @notice Error for when the from token is invalid.
     * @param intendedFromToken The intended from token address.
     * @param actualFromToken The actual from token address received.
     */
    error InvalidFromToken(address intendedFromToken, address actualFromToken);

    /*
     * @notice Error for when the to token is invalid.
     * @param intendedToToken The intended to token address.
     * @param actualToToken The actual to token address received.
     */
    error InvalidToToken(address intendedToToken, address actualToToken);

    /// @notice Error for when the expected amount is zero.
    error ExpectedAmountZero();

    /// @notice Error for when swap parameters are invalid.
    error InvalidSwapParams();

    /// SWAP AND LOCK ///

    /// @notice Error for when the same address is used in a context where it is not allowed.
    error SameAddress();

    //// COVEYFI ////

    /// @notice Error for when only minting is enabled.
    error OnlyMintingEnabled();

    /// RESCUABLE ///

    /// @notice Error for when an ETH transfer of zero is attempted.
    error ZeroEthTransfer();

    /// @notice Error for when an ETH transfer fails.
    error EthTransferFailed();

    /// @notice Error for when a token transfer of zero is attempted.
    error ZeroTokenTransfer();

    /// GAUGE REWARD RECEIVER ///

    /// @notice Error for when an action is not authorized.
    error NotAuthorized();

    /// @notice Error for when rescuing a reward token is not allowed.
    error CannotRescueRewardToken();

    /// DYFI REDEEMER ///

    /// @notice Error for when an array length is invalid.
    error InvalidArrayLength();

    /// @notice Error for when a price feed is outdated.
    error PriceFeedOutdated();

    /// @notice Error for when a price feed round is incorrect.
    error PriceFeedIncorrectRound();

    /// @notice Error for when a price feed returns a zero price.
    error PriceFeedReturnedZeroPrice();

    /// @notice Error for when there is no DYFI to redeem.
    error NoDYfiToRedeem();

    /// @notice Error for when an ETH transfer for caller reward fails.
    error CallerRewardEthTransferFailed();

    /// COVE YEARN GAUGE FACTORY ///

    /// @notice Error for when a gauge has already been deployed.
    error GaugeAlreadyDeployed();

    /// @notice Error for when a gauge has not been deployed.
    error GaugeNotDeployed();

    /// MINICHEF V3 ////

    /// @notice Error for when an LP token is invalid.
    error InvalidLPToken();

    /// @notice Error for when an LP token has not been added.
    error LPTokenNotAdded();

    /// @notice Error for when an LP token does not match the pool ID.
    error LPTokenDoesNotMatchPoolId();

    /// @notice Error for when there is an insufficient balance.
    error InsufficientBalance();

    /// @notice Error for when an LP token has already been added.
    error LPTokenAlreadyAdded();

    /// @notice Error for when the reward rate is too high.
    error RewardRateTooHigh();

    /// Yearn4626RouterExt ///

    /// @notice Error for when there are insufficient shares.
    error InsufficientShares();

    /// @notice Error for when the 'to' address is invalid.
    error InvalidTo();

    /// @notice Error esure the has enough remaining gas.
    error InsufficientGas();

    /// TESTING ///

    /// @notice Error for when there is not enough balance to take away.
    error TakeAwayNotEnoughBalance();

    /// @notice Error for when a strategy has not been added to a vault.
    error StrategyNotAddedToVault();

    /// COVE TOKEN ///

    /// @notice Error for when a transfer is attempted before it is allowed.
    error TransferNotAllowedYet();

    /// @notice Error for when an address is being added as both a sender and a receiver.
    error CannotBeBothSenderAndReceiver();

    /// @notice Error for when an unpause is attempted too early.
    error UnpauseTooEarly();

    /// @notice Error for when the pause period is too long.
    error PausePeriodTooLong();

    /// @notice Error for when minting is attempted too early.
    error MintingAllowedTooEarly();

    /// @notice Error for when the mint amount exceeds the cap.
    error InflationTooLarge();

    /*
     * @notice Error for when an unauthorized account attempts an action requiring a specific role.
     * @param account The account attempting the unauthorized action.
     * @param neededRole The role required for the action.
     */
    error AccessControlEnumerableUnauthorizedAccount(address account, bytes32 neededRole);

    /// @notice Error for when an action is unauthorized.
    error Unauthorized();

    /// @notice Error for when a pause is expected but not enacted.
    error ExpectedPause();

    /// COVE YEARN GAUGE FACTORY ///

    /// @notice Error for when an address is not a contract.
    error AddressNotContract();
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.18;

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

interface IStakingDelegateRewards is IAccessControlEnumerable {
    function getReward(address stakingToken) external;
    function setRewardReceiver(address receiver) external;
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.18;

import { IVotingYFI } from "./deps/yearn/veYFI/IVotingYFI.sol";

interface IYearnStakingDelegate {
    // Struct definitions
    struct RewardSplit {
        uint64 treasury;
        uint64 coveYfi;
        uint64 user;
        uint64 lock;
    }

    struct ExitRewardSplit {
        uint128 treasury;
        uint128 coveYfi;
    }

    struct BoostRewardSplit {
        uint128 treasury;
        uint128 coveYfi;
    }

    function deposit(address gauge, uint256 amount) external;
    function withdraw(address gauge, uint256 amount) external;
    function withdraw(address gauge, uint256 amount, address receiver) external;
    function lockYfi(uint256 amount) external returns (IVotingYFI.LockedBalance memory);
    function harvest(address vault) external returns (uint256);
    function setCoveYfiRewardForwarder(address forwarder) external;
    function setGaugeRewardSplit(
        address gauge,
        uint64 treasuryPct,
        uint64 coveYfiPct,
        uint64 userPct,
        uint64 veYfiPct
    )
        external;

    function setBoostRewardSplit(uint128 treasuryPct, uint128 coveYfiPct) external;
    function setExitRewardSplit(uint128 treasuryPct, uint128 coveYfiPct) external;
    function setSwapAndLock(address swapAndLock) external;
    function balanceOf(address user, address gauge) external view returns (uint256);
    function totalDeposited(address gauge) external view returns (uint256);
    function depositLimit(address gauge) external view returns (uint256);
    function availableDepositLimit(address gauge) external view returns (uint256);
    function gaugeStakingRewards(address gauge) external view returns (address);
    function gaugeRewardReceivers(address gauge) external view returns (address);
    function getGaugeRewardSplit(address gauge) external view returns (RewardSplit memory);
    function getBoostRewardSplit() external view returns (BoostRewardSplit memory);
    function getExitRewardSplit() external view returns (ExitRewardSplit memory);
    function treasury() external view returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
 */
interface IAccessControlEnumerable is IAccessControl {
    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) external view returns (address);

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

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

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(account),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * May emit a {RoleGranted} event.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```solidity
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 *
 * [WARNING]
 * ====
 * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
 * unusable.
 * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
 *
 * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an
 * array of EnumerableSet.
 * ====
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping(bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            if (lastIndex != toDeleteIndex) {
                bytes32 lastValue = set._values[lastIndex];

                // Move the last value to the index where the value to delete is
                set._values[toDeleteIndex] = lastValue;
                // Update the index for the moved value
                set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex
            }

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        bytes32[] memory store = _values(set._inner);
        bytes32[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }
}

// 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 IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

    /**
     * @dev Returns the 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
// OpenZeppelin Contracts (last updated v4.9.4) (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.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @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].
     *
     * CAUTION: See Security Considerations above.
     */
    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 Address {
    /**
     * @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
pragma solidity ^0.8.18;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IVotingYFI is IERC20 {
    event ModifyLock(address indexed sender, address indexed user, uint256 amount, uint256 locktime, uint256 ts);
    event Withdraw(address indexed user, uint256 amount, uint256 ts);
    event Penalty(address indexed user, uint256 amount, uint256 ts);
    event Supply(uint256 oldSupply, uint256 newSupply, uint256 ts);

    struct LockedBalance {
        uint256 amount;
        uint256 end;
    }

    struct Withdrawn {
        uint256 amount;
        uint256 penalty;
    }

    struct Point {
        int128 bias;
        int128 slope;
        uint256 ts;
        uint256 blk;
    }

    function totalSupply() external view returns (uint256);

    function locked(address _user) external view returns (LockedBalance memory);

    function modify_lock(
        uint256 _amount,
        uint256 _unlock_time,
        address _user
    )
        external
        returns (LockedBalance memory);

    function withdraw() external returns (Withdrawn memory);

    function point_history(address user, uint256 epoch) external view returns (Point memory);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

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

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

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

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

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

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

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

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

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

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

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

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

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

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

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

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

{
  "remappings": [
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "@openzeppelin-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "tokenized-strategy/=lib/tokenized-strategy/src/",
    "yearn-vaults-v3/=lib/yearn-vaults-v3/contracts/",
    "Yearn-ERC4626-Router/=lib/Yearn-ERC4626-Router/src/",
    "solmate/=lib/permit2/lib/solmate/src/",
    "permit2/=lib/permit2/src/",
    "forge-std/=lib/forge-std/src/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "@crytic/properties/=lib/properties/",
    "forge-deploy/=lib/forge-deploy/contracts/",
    "script/=script/",
    "src/=src/",
    "test/=test/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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00000000000000000000000041252e8691e964f7de35156b68493bab6797a27500000000000000000000000005dcdbf02f29239d1f8d9797e22589a2de1c152f0000000000000000000000007bd578354b0b2f02e656f1bdc0e41a80f860534b000000000000000000000000705f82bb431fada1a0f11d7b77b3f0586c545cbc

-----Decoded View---------------
Arg [0] : rewardsToken_ (address): 0x41252E8691e964f7DE35156B68493bAb6797a275
Arg [1] : stakingDelegate_ (address): 0x05dcdBF02F29239D1f8d9797E22589A2DE1C152F
Arg [2] : admin (address): 0x7Bd578354b0B2f02E656f1bDC0e41a80f860534b
Arg [3] : timeLock (address): 0x705F82BB431fAdA1a0F11D7b77B3f0586c545CBc

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 00000000000000000000000041252e8691e964f7de35156b68493bab6797a275
Arg [1] : 00000000000000000000000005dcdbf02f29239d1f8d9797e22589a2de1c152f
Arg [2] : 0000000000000000000000007bd578354b0b2f02e656f1bdc0e41a80f860534b
Arg [3] : 000000000000000000000000705f82bb431fada1a0f11d7b77b3f0586c545cbc