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// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.23;
import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import { EnumerableSet } from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";

import { EnumerableMap } from "@openzeppelin/contracts/utils/structs/EnumerableMap.sol";

import { IPVotingEscrowMainchain, IPVeToken } from "../interfaces/IVotingEscrow/IPVotingEscrowMainchain.sol";

import { Checkpoint, CheckpointHelper, Checkpoints, WeekMath } from "../libraries/VeHistoryLib.sol";

import { VeBalanceLib, VeBalance, LockedPosition } from "../libraries/VeBalanceLib.sol";

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

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

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

import { OwnableUpgradeable, MsgSenderAppUpg } from "../CrossChainMsg/MsgSenderAppUpg.sol";

import { IChefIncentivesController } from "../interfaces/IIncentive/IChefIncentivesController.sol";

//
// import { IVeChef } from "../interfaces/IIncentive/IVeChef.sol";

interface IPriceProvider {
    function updateAndBroadcastPrice(uint256[] calldata chainIds) external payable;
}

contract VotingEscrowMainchain is VotingEscrowTokenBase, IPVotingEscrowMainchain, MsgSenderAppUpg {
    using SafeERC20 for IERC20;
    using VeBalanceLib for VeBalance;
    using VeBalanceLib for LockedPosition;
    using Checkpoints for Checkpoints.History;
    using EnumerableMap for EnumerableMap.UintToAddressMap;

    bytes private constant EMPTY_BYTES = abi.encode();
    bytes private constant SAMPLE_SUPPLY_UPDATE_MESSAGE = abi.encode(0, VeBalance(0, 0), EMPTY_BYTES);
    bytes private constant SAMPLE_POSITION_UPDATE_MESSAGE = abi.encode(0, VeBalance(0, 0), abi.encode(address(0), LockedPosition(0, 0)));

    IERC20 public protocolToken;

    IChefIncentivesController public veChef;

    IChefIncentivesController public cic;

    uint256 public executionGasLimit;

    address public keeper;

    uint128 public lastSlopeChangeAppliedAt;
    // [wTime] => slopeChanges
    mapping(uint128 => uint128) public slopeChanges;

    // Saving totalSupply checkpoint for each week, later can be used for reward accounting
    // [wTime] => totalSupply
    mapping(uint128 => uint128) public totalSupplyAt;

    // Saving VeBalance checkpoint for users of each week, can later use binary search
    // to ask for their vePendle balance at any wTime
    mapping(address => Checkpoints.History) internal userHistory;

    uint256[50] private __gap;

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    function initialize(IERC20 _protocolToken, address _msgSendEndpoint, uint256 _approxDstExecutionGas) public initializer {
        if (address(_protocolToken) == address(0)) revert Errors.ZeroAddress();
        protocolToken = _protocolToken;
        __MsgSenderAppUpg_init(_msgSendEndpoint, _approxDstExecutionGas);
    }

    function setLastSlopeChangeAppliedAt() external onlyOwner {
        lastSlopeChangeAppliedAt = getCurrentWeekStart();
    }

    function setKeeperConfig(address _keeper, uint256 _executionGasLimit) external onlyOwner {
        if (_keeper == address(0)) revert Errors.ZeroAddress();
        keeper = _keeper;
        executionGasLimit = _executionGasLimit;
        emit KeeperConfigSet(_keeper, _executionGasLimit);
    }

    //
    function setVeChef(IChefIncentivesController _veChef) external onlyOwner {
        if (address(_veChef) == address(0)) revert Errors.ZeroAddress();
        veChef = _veChef;
        emit VeChefSet(address(veChef));
    }

    //@note in case UpdateInProgress needs to be integrated in the future
    function setCIC(IChefIncentivesController _cic) external onlyOwner {
        if (address(_cic) == address(0)) revert Errors.ZeroAddress();
        cic = _cic;
        emit cicSet(address(cic));
    }

    /// @notice basically a proxy function to call increaseLockPosition & broadcastUserPosition at the same time
    function increaseLockPositionAndBroadcast(
        uint128 additionalAmountToLock,
        uint128 newExpiry,
        uint256[] calldata chainIds
    ) external payable refundUnusedEth returns (uint128 newVeBalance) {
        newVeBalance = increaseLockPosition(additionalAmountToLock, newExpiry);
        broadcastUserPosition(msg.sender, chainIds);
    }

    /**
     * @notice increases the lock position of a user (amount and/or expiry). Applicable even when
     * user has no position or the current position has expired.
     * @param additionalAmountToLock pendle amount to be pulled in from user to lock.
     * @param newExpiry new lock expiry. Must be a valid week beginning, and resulting lock
     * duration (since `block.timestamp`) must be within the allowed range.
     * @dev Will revert if resulting position has zero lock amount.
     * @dev See `_increasePosition()` for details on inner workings.
     * @dev Sidechain broadcasting is not bundled since it can be done anytime after.
     */
    function increaseLockPosition(uint128 additionalAmountToLock, uint128 newExpiry) public payable returns (uint128 newVeBalance) {
        address user = msg.sender;

        if (!WeekMath.isValidWTime(newExpiry)) revert Errors.InvalidWTime(newExpiry);
        if (MiniHelpers.isTimeInThePast(newExpiry)) revert Errors.ExpiryInThePast(newExpiry);

        if (newExpiry < positionData[user].expiry) revert Errors.VENotAllowedReduceExpiry();

        if (newExpiry > block.timestamp + MAX_LOCK_TIME) revert Errors.VEExceededMaxLockTime();
        if (newExpiry < block.timestamp + MIN_LOCK_TIME) revert Errors.VEInsufficientLockTime();

        uint128 newTotalAmountLocked = additionalAmountToLock + positionData[user].amount;
        if (newTotalAmountLocked == 0) revert Errors.VEZeroAmountLocked();

        uint128 additionalDurationToLock = newExpiry - positionData[user].expiry;

        if (additionalAmountToLock > 0) {
            protocolToken.safeTransferFrom(user, address(this), additionalAmountToLock);
        }

        newVeBalance = _increasePosition(user, additionalAmountToLock, additionalDurationToLock);

        if (veChef != IChefIncentivesController(address(0))) {
            veChef.handleWithdrawAfter(user, balanceOf(user));
        }

        if (executionGasLimit > 0 && keeper != address(0)) {
            uint256 estimatedUpdateGas = (executionGasLimit * tx.gasprice * 80) / 100; // 80% of gas limit
            (bool success, ) = keeper.call{ value: estimatedUpdateGas }("");
            if (!success) {
                revert Errors.EthTransferFailed();
            }
        }

        emit UpdateRequestedFromVe(user, 0);

        emit NewLockPosition(user, newTotalAmountLocked, newExpiry);
    }

    /**
     * @notice Withdraws an expired lock position, returns locked PENDLE back to user
     * @dev reverts if position is not expired, or if no locked PENDLE to withdraw
     * @dev broadcast is not bundled since it can be done anytime after
     */
    function withdraw() external returns (uint128 amount) {
        address user = msg.sender;

        if (!_isPositionExpired(user)) revert Errors.VEPositionNotExpired();
        amount = positionData[user].amount;

        if (amount == 0) revert Errors.VEZeroPosition();

        delete positionData[user];

        protocolToken.safeTransfer(user, amount);

        if (veChef != IChefIncentivesController(address(0))) {
            veChef.handleWithdrawAfter(user, 0);
        }

        emit Withdraw(user, amount);
    }

    /**
     * @notice update & return the current totalSupply, but does not broadcast info to other chains
     * @dev See `broadcastTotalSupply()` and `broadcastUserPosition()` for broadcasting
     */
    function totalSupplyCurrent() public virtual override(IPVeToken, VotingEscrowTokenBase) returns (uint128) {
        (VeBalance memory supply, ) = _applySlopeChange();
        return supply.getCurrentValue();
    }

    /// @notice updates and broadcast the current totalSupply to different chains
    function broadcastTotalSupply(uint256[] calldata chainIds) public payable refundUnusedEth {
        _broadcastPosition(address(0), chainIds);
    }

    /**
     * @notice updates and broadcast the position of `user` to different chains, also updates and
     * broadcasts totalSupply
     */
    function broadcastUserPosition(address user, uint256[] calldata chainIds) public payable refundUnusedEth {
        if (user == address(0)) revert Errors.ZeroAddress();
        _broadcastPosition(user, chainIds);
    }

    function getUserHistoryLength(address user) external view returns (uint256) {
        return userHistory[user].length();
    }

    function getUserHistoryAt(address user, uint256 index) external view returns (Checkpoint memory) {
        return userHistory[user].get(index);
    }

    function getBroadcastSupplyFee(uint256[] calldata chainIds) external view returns (uint256 fee) {
        for (uint256 i = 0; i < chainIds.length; i++) {
            fee += _getSendMessageFee(chainIds[i], SAMPLE_SUPPLY_UPDATE_MESSAGE);
        }
    }

    function getBroadcastPositionFee(uint256[] calldata chainIds) external view returns (uint256 fee) {
        for (uint256 i = 0; i < chainIds.length; i++) {
            fee += _getSendMessageFee(chainIds[i], SAMPLE_POSITION_UPDATE_MESSAGE);
        }
    }

    /**
     * @notice increase the locking position of the user
     * @dev works by simply removing the old position from all relevant data (as if the user has
     * never locked) and then add in the new position
     */
    function _increasePosition(address user, uint128 amountToIncrease, uint128 durationToIncrease) internal returns (uint128) {
        LockedPosition memory oldPosition = positionData[user];

        (VeBalance memory newSupply, ) = _applySlopeChange();

        if (!MiniHelpers.isCurrentlyExpired(oldPosition.expiry)) {
            // remove old position not yet expired
            VeBalance memory oldBalance = oldPosition.convertToVeBalance();
            newSupply = newSupply.sub(oldBalance);
            slopeChanges[oldPosition.expiry] -= oldBalance.slope;
        }

        LockedPosition memory newPosition = LockedPosition(oldPosition.amount + amountToIncrease, oldPosition.expiry + durationToIncrease);

        VeBalance memory newBalance = newPosition.convertToVeBalance();
        // add new position
        newSupply = newSupply.add(newBalance);
        slopeChanges[newPosition.expiry] += newBalance.slope;

        _totalSupply = newSupply;
        positionData[user] = newPosition;
        userHistory[user].push(newBalance);
        return newBalance.getCurrentValue();
    }

    /**
     * @notice updates the totalSupply, processing all slope changes of past weeks. At the same time,
     * set the finalized totalSupplyAt
     */
    function _applySlopeChange() internal returns (VeBalance memory, uint128) {
        VeBalance memory supply = _totalSupply;
        uint128 wTime = lastSlopeChangeAppliedAt;
        uint128 currentWeekStart = WeekMath.getCurrentWeekStart();

        if (wTime >= currentWeekStart) {
            return (supply, wTime);
        }

        while (wTime < currentWeekStart) {
            wTime += WEEK;
            supply = supply.sub(slopeChanges[wTime], wTime);
            totalSupplyAt[wTime] = supply.getValueAt(wTime);
        }

        _totalSupply = supply;
        lastSlopeChangeAppliedAt = wTime;

        return (supply, wTime);
    }

    /// @notice broadcast position to all chains in chainIds
    function _broadcastPosition(address user, uint256[] calldata chainIds) internal {
        if (chainIds.length == 0) revert Errors.ArrayEmpty();

        (VeBalance memory supply, ) = _applySlopeChange();

        bytes memory userData = (user == address(0) ? EMPTY_BYTES : abi.encode(user, positionData[user]));

        for (uint256 i = 0; i < chainIds.length; ++i) {
            if (!destinationContracts.contains(chainIds[i])) revert Errors.ChainNotSupported(chainIds[i]);
            _broadcast(chainIds[i], uint128(block.timestamp), supply, userData);
            emit UpdateRequestedFromVeCrossChain(user, 0, chainIds[i]);
        }

        if (user != address(0)) {
            emit BroadcastUserPosition(user, chainIds);
        }
        emit BroadcastTotalSupply(supply, chainIds);
    }

    function _broadcast(uint256 chainId, uint128 msgTime, VeBalance memory supply, bytes memory userData) internal {
        _sendMessage(chainId, abi.encode(msgTime, supply, userData));
    }

    function getCurrentWeekStart() public view returns (uint128) {
        return WeekMath.getCurrentWeekStart();
    }
}

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

pragma solidity ^0.8.20;

import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
    /// @custom:storage-location erc7201:openzeppelin.storage.Ownable
    struct OwnableStorage {
        address _owner;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant OwnableStorageLocation = 0x9016d09d72d40fdae2fd8ceac6b6234c7706214fd39c1cd1e609a0528c199300;

    function _getOwnableStorage() private pure returns (OwnableStorage storage $) {
        assembly {
            $.slot := OwnableStorageLocation
        }
    }

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

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

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    function __Ownable_init(address initialOwner) internal onlyInitializing {
        __Ownable_init_unchained(initialOwner);
    }

    function __Ownable_init_unchained(address initialOwner) internal onlyInitializing {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.20;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Storage of the initializable contract.
     *
     * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions
     * when using with upgradeable contracts.
     *
     * @custom:storage-location erc7201:openzeppelin.storage.Initializable
     */
    struct InitializableStorage {
        /**
         * @dev Indicates that the contract has been initialized.
         */
        uint64 _initialized;
        /**
         * @dev Indicates that the contract is in the process of being initialized.
         */
        bool _initializing;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00;

    /**
     * @dev The contract is already initialized.
     */
    error InvalidInitialization();

    /**
     * @dev The contract is not initializing.
     */
    error NotInitializing();

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint64 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any
     * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in
     * production.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        // Cache values to avoid duplicated sloads
        bool isTopLevelCall = !$._initializing;
        uint64 initialized = $._initialized;

        // Allowed calls:
        // - initialSetup: the contract is not in the initializing state and no previous version was
        //                 initialized
        // - construction: the contract is initialized at version 1 (no reininitialization) and the
        //                 current contract is just being deployed
        bool initialSetup = initialized == 0 && isTopLevelCall;
        bool construction = initialized == 1 && address(this).code.length == 0;

        if (!initialSetup && !construction) {
            revert InvalidInitialization();
        }
        $._initialized = 1;
        if (isTopLevelCall) {
            $._initializing = true;
        }
        _;
        if (isTopLevelCall) {
            $._initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint64 version) {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing || $._initialized >= version) {
            revert InvalidInitialization();
        }
        $._initialized = version;
        $._initializing = true;
        _;
        $._initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        _checkInitializing();
        _;
    }

    /**
     * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}.
     */
    function _checkInitializing() internal view virtual {
        if (!_isInitializing()) {
            revert NotInitializing();
        }
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing) {
            revert InvalidInitialization();
        }
        if ($._initialized != type(uint64).max) {
            $._initialized = type(uint64).max;
            emit Initialized(type(uint64).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint64) {
        return _getInitializableStorage()._initialized;
    }

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

    /**
     * @dev Returns a pointer to the storage namespace.
     */
    // solhint-disable-next-line var-name-mixedcase
    function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
        assembly {
            $.slot := INITIALIZABLE_STORAGE
        }
    }
}

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

pragma solidity ^0.8.20;
import {Initializable} from "../proxy/utils/Initializable.sol";

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.20;

/**
 * @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 v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC20Permit} from "../extensions/IERC20Permit.sol";
import {Address} from "../../../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 An operation with an ERC20 token failed.
     */
    error SafeERC20FailedOperation(address token);

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

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

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

    /**
     * @dev 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);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

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

    /**
     * @dev 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);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that 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(token).code.length > 0;
    }
}

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

pragma solidity ^0.8.20;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error AddressInsufficientBalance(address account);

    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedInnerCall();

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

        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert FailedInnerCall();
        }
    }

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

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

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

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

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

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {FailedInnerCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
     */
    function _revert(bytes memory returndata) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert FailedInnerCall();
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/structs/EnumerableMap.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableMap.js.

pragma solidity ^0.8.20;

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

/**
 * @dev Library for managing an enumerable variant of Solidity's
 * https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
 * type.
 *
 * Maps have the following properties:
 *
 * - Entries are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Entries are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```solidity
 * contract Example {
 *     // Add the library methods
 *     using EnumerableMap for EnumerableMap.UintToAddressMap;
 *
 *     // Declare a set state variable
 *     EnumerableMap.UintToAddressMap private myMap;
 * }
 * ```
 *
 * The following map types are supported:
 *
 * - `uint256 -> address` (`UintToAddressMap`) since v3.0.0
 * - `address -> uint256` (`AddressToUintMap`) since v4.6.0
 * - `bytes32 -> bytes32` (`Bytes32ToBytes32Map`) since v4.6.0
 * - `uint256 -> uint256` (`UintToUintMap`) since v4.7.0
 * - `bytes32 -> uint256` (`Bytes32ToUintMap`) since v4.7.0
 *
 * [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 EnumerableMap, you can either remove all elements one by one or create a fresh instance using an
 * array of EnumerableMap.
 * ====
 */
library EnumerableMap {
    using EnumerableSet for EnumerableSet.Bytes32Set;

    // To implement this library for multiple types with as little code repetition as possible, we write it in
    // terms of a generic Map type with bytes32 keys and values. The Map implementation uses private functions,
    // and user-facing implementations such as `UintToAddressMap` are just wrappers around the underlying Map.
    // This means that we can only create new EnumerableMaps for types that fit in bytes32.

    /**
     * @dev Query for a nonexistent map key.
     */
    error EnumerableMapNonexistentKey(bytes32 key);

    struct Bytes32ToBytes32Map {
        // Storage of keys
        EnumerableSet.Bytes32Set _keys;
        mapping(bytes32 key => bytes32) _values;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function set(Bytes32ToBytes32Map storage map, bytes32 key, bytes32 value) internal returns (bool) {
        map._values[key] = value;
        return map._keys.add(key);
    }

    /**
     * @dev Removes a key-value pair from a map. O(1).
     *
     * Returns true if the key was removed from the map, that is if it was present.
     */
    function remove(Bytes32ToBytes32Map storage map, bytes32 key) internal returns (bool) {
        delete map._values[key];
        return map._keys.remove(key);
    }

    /**
     * @dev Returns true if the key is in the map. O(1).
     */
    function contains(Bytes32ToBytes32Map storage map, bytes32 key) internal view returns (bool) {
        return map._keys.contains(key);
    }

    /**
     * @dev Returns the number of key-value pairs in the map. O(1).
     */
    function length(Bytes32ToBytes32Map storage map) internal view returns (uint256) {
        return map._keys.length();
    }

    /**
     * @dev Returns the key-value pair stored at position `index` in the map. O(1).
     *
     * Note that there are no guarantees on the ordering of entries inside the
     * array, and it may change when more entries are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32ToBytes32Map storage map, uint256 index) internal view returns (bytes32, bytes32) {
        bytes32 key = map._keys.at(index);
        return (key, map._values[key]);
    }

    /**
     * @dev Tries to returns the value associated with `key`. O(1).
     * Does not revert if `key` is not in the map.
     */
    function tryGet(Bytes32ToBytes32Map storage map, bytes32 key) internal view returns (bool, bytes32) {
        bytes32 value = map._values[key];
        if (value == bytes32(0)) {
            return (contains(map, key), bytes32(0));
        } else {
            return (true, value);
        }
    }

    /**
     * @dev Returns the value associated with `key`. O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function get(Bytes32ToBytes32Map storage map, bytes32 key) internal view returns (bytes32) {
        bytes32 value = map._values[key];
        if (value == 0 && !contains(map, key)) {
            revert EnumerableMapNonexistentKey(key);
        }
        return value;
    }

    /**
     * @dev Return the an array containing all the keys
     *
     * 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 map grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function keys(Bytes32ToBytes32Map storage map) internal view returns (bytes32[] memory) {
        return map._keys.values();
    }

    // UintToUintMap

    struct UintToUintMap {
        Bytes32ToBytes32Map _inner;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function set(UintToUintMap storage map, uint256 key, uint256 value) internal returns (bool) {
        return set(map._inner, bytes32(key), bytes32(value));
    }

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

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

    /**
     * @dev Returns the number of elements in the map. O(1).
     */
    function length(UintToUintMap storage map) internal view returns (uint256) {
        return length(map._inner);
    }

    /**
     * @dev Returns the element stored at position `index` in the map. 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(UintToUintMap storage map, uint256 index) internal view returns (uint256, uint256) {
        (bytes32 key, bytes32 value) = at(map._inner, index);
        return (uint256(key), uint256(value));
    }

    /**
     * @dev Tries to returns the value associated with `key`. O(1).
     * Does not revert if `key` is not in the map.
     */
    function tryGet(UintToUintMap storage map, uint256 key) internal view returns (bool, uint256) {
        (bool success, bytes32 value) = tryGet(map._inner, bytes32(key));
        return (success, uint256(value));
    }

    /**
     * @dev Returns the value associated with `key`. O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function get(UintToUintMap storage map, uint256 key) internal view returns (uint256) {
        return uint256(get(map._inner, bytes32(key)));
    }

    /**
     * @dev Return the an array containing all the keys
     *
     * 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 map grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function keys(UintToUintMap storage map) internal view returns (uint256[] memory) {
        bytes32[] memory store = keys(map._inner);
        uint256[] memory result;

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

        return result;
    }

    // UintToAddressMap

    struct UintToAddressMap {
        Bytes32ToBytes32Map _inner;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {
        return set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
    }

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

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

    /**
     * @dev Returns the number of elements in the map. O(1).
     */
    function length(UintToAddressMap storage map) internal view returns (uint256) {
        return length(map._inner);
    }

    /**
     * @dev Returns the element stored at position `index` in the map. 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(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
        (bytes32 key, bytes32 value) = at(map._inner, index);
        return (uint256(key), address(uint160(uint256(value))));
    }

    /**
     * @dev Tries to returns the value associated with `key`. O(1).
     * Does not revert if `key` is not in the map.
     */
    function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
        (bool success, bytes32 value) = tryGet(map._inner, bytes32(key));
        return (success, address(uint160(uint256(value))));
    }

    /**
     * @dev Returns the value associated with `key`. O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
        return address(uint160(uint256(get(map._inner, bytes32(key)))));
    }

    /**
     * @dev Return the an array containing all the keys
     *
     * 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 map grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function keys(UintToAddressMap storage map) internal view returns (uint256[] memory) {
        bytes32[] memory store = keys(map._inner);
        uint256[] memory result;

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

        return result;
    }

    // AddressToUintMap

    struct AddressToUintMap {
        Bytes32ToBytes32Map _inner;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function set(AddressToUintMap storage map, address key, uint256 value) internal returns (bool) {
        return set(map._inner, bytes32(uint256(uint160(key))), bytes32(value));
    }

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

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

    /**
     * @dev Returns the number of elements in the map. O(1).
     */
    function length(AddressToUintMap storage map) internal view returns (uint256) {
        return length(map._inner);
    }

    /**
     * @dev Returns the element stored at position `index` in the map. 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(AddressToUintMap storage map, uint256 index) internal view returns (address, uint256) {
        (bytes32 key, bytes32 value) = at(map._inner, index);
        return (address(uint160(uint256(key))), uint256(value));
    }

    /**
     * @dev Tries to returns the value associated with `key`. O(1).
     * Does not revert if `key` is not in the map.
     */
    function tryGet(AddressToUintMap storage map, address key) internal view returns (bool, uint256) {
        (bool success, bytes32 value) = tryGet(map._inner, bytes32(uint256(uint160(key))));
        return (success, uint256(value));
    }

    /**
     * @dev Returns the value associated with `key`. O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function get(AddressToUintMap storage map, address key) internal view returns (uint256) {
        return uint256(get(map._inner, bytes32(uint256(uint160(key)))));
    }

    /**
     * @dev Return the an array containing all the keys
     *
     * 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 map grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function keys(AddressToUintMap storage map) internal view returns (address[] memory) {
        bytes32[] memory store = keys(map._inner);
        address[] memory result;

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

        return result;
    }

    // Bytes32ToUintMap

    struct Bytes32ToUintMap {
        Bytes32ToBytes32Map _inner;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function set(Bytes32ToUintMap storage map, bytes32 key, uint256 value) internal returns (bool) {
        return set(map._inner, key, bytes32(value));
    }

    /**
     * @dev Removes a value from a map. O(1).
     *
     * Returns true if the key was removed from the map, that is if it was present.
     */
    function remove(Bytes32ToUintMap storage map, bytes32 key) internal returns (bool) {
        return remove(map._inner, key);
    }

    /**
     * @dev Returns true if the key is in the map. O(1).
     */
    function contains(Bytes32ToUintMap storage map, bytes32 key) internal view returns (bool) {
        return contains(map._inner, key);
    }

    /**
     * @dev Returns the number of elements in the map. O(1).
     */
    function length(Bytes32ToUintMap storage map) internal view returns (uint256) {
        return length(map._inner);
    }

    /**
     * @dev Returns the element stored at position `index` in the map. 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(Bytes32ToUintMap storage map, uint256 index) internal view returns (bytes32, uint256) {
        (bytes32 key, bytes32 value) = at(map._inner, index);
        return (key, uint256(value));
    }

    /**
     * @dev Tries to returns the value associated with `key`. O(1).
     * Does not revert if `key` is not in the map.
     */
    function tryGet(Bytes32ToUintMap storage map, bytes32 key) internal view returns (bool, uint256) {
        (bool success, bytes32 value) = tryGet(map._inner, key);
        return (success, uint256(value));
    }

    /**
     * @dev Returns the value associated with `key`. O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function get(Bytes32ToUintMap storage map, bytes32 key) internal view returns (uint256) {
        return uint256(get(map._inner, key));
    }

    /**
     * @dev Return the an array containing all the keys
     *
     * 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 map grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function keys(Bytes32ToUintMap storage map) internal view returns (bytes32[] memory) {
        bytes32[] memory store = keys(map._inner);
        bytes32[] memory result;

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

        return result;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/structs/EnumerableSet.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.

pragma solidity ^0.8.20;

/**
 * @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 is the index of the value in the `values` array plus 1.
        // Position 0 is used to mean a value is not in the set.
        mapping(bytes32 value => uint256) _positions;
    }

    /**
     * @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._positions[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 cache the value's position to prevent multiple reads from the same storage slot
        uint256 position = set._positions[value];

        if (position != 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 valueIndex = position - 1;
            uint256 lastIndex = set._values.length - 1;

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

                // Move the lastValue to the index where the value to delete is
                set._values[valueIndex] = lastValue;
                // Update the tracked position of the lastValue (that was just moved)
                set._positions[lastValue] = position;
            }

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

            // Delete the tracked position for the deleted slot
            delete set._positions[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._positions[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: GPL-3.0-or-later
pragma solidity ^0.8.23;

import { IPMsgSendEndpoint } from "../interfaces/ICrossChainMsg/IPMsgSendEndpoint.sol";

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

import { EnumerableMap } from "@openzeppelin/contracts/utils/structs/EnumerableMap.sol";
import { Address } from "@openzeppelin/contracts/utils/Address.sol";
import { OwnableUpgradeable } from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";

// solhint-disable no-empty-blocks

abstract contract MsgSenderAppUpg is OwnableUpgradeable {
    using EnumerableMap for EnumerableMap.UintToAddressMap;
    using Address for address;

    uint256 public approxDstExecutionGas;

    IPMsgSendEndpoint public msgSendEndpoint;

    // destinationContracts mapping contains one address for each chainId only
    EnumerableMap.UintToAddressMap internal destinationContracts;

    uint256[50] private __gap;

    event DestinationContractAdded(uint256 chainId, address addr);

    event ApproxDstExecutionGasUpdated(uint256 gas);

    modifier refundUnusedEth() {
        _;
        if (address(this).balance > 0) {
            Address.sendValue(payable(msg.sender), address(this).balance);
        }
    }

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    function __MsgSenderAppUpg_init(address _msgSendEndpoint, uint256 _approxDstExecutionGas) internal onlyInitializing {
        msgSendEndpoint = IPMsgSendEndpoint(_msgSendEndpoint);
        approxDstExecutionGas = _approxDstExecutionGas;
        __Ownable_init(msg.sender);
    }

    function _sendMessage(uint256 chainId, bytes memory message) internal {
        assert(destinationContracts.contains(chainId));
        address toAddr = destinationContracts.get(chainId);
        uint256 estimatedGasAmount = approxDstExecutionGas;
        uint256 fee = msgSendEndpoint.calcFee(toAddr, chainId, message, estimatedGasAmount);
        // LM contracts won't hold ETH on its own so this is fine
        if (address(this).balance < fee) revert Errors.InsufficientFeeToSendMsg(address(this).balance, fee);
        msgSendEndpoint.sendMessage{ value: fee }(toAddr, chainId, message, estimatedGasAmount);
    }

    function addDestinationContract(address _address, uint256 _chainId) public payable onlyOwner {
        destinationContracts.set(_chainId, _address);
        emit DestinationContractAdded(_chainId, _address);
    }

    function setApproxDstExecutionGas(uint256 gas) external onlyOwner {
        approxDstExecutionGas = gas;
        emit ApproxDstExecutionGasUpdated(gas);
    }

    function getAllDestinationContracts() public view returns (uint256[] memory chainIds, address[] memory addrs) {
        uint256 length = destinationContracts.length();
        chainIds = new uint256[](length);
        addrs = new address[](length);

        for (uint256 i = 0; i < length; ++i) {
            (chainIds[i], addrs[i]) = destinationContracts.at(i);
        }
    }

    function _getSendMessageFee(uint256 chainId, bytes memory message) internal view returns (uint256) {
        return msgSendEndpoint.calcFee(destinationContracts.get(chainId), chainId, message, approxDstExecutionGas);
    }
}

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

pragma solidity >=0.8.0;

interface IPMsgSendEndpoint {
    function calcFee(
        address dstAddress,
        uint256 dstChainId,
        bytes memory payload,
        uint256 estimatedGasAmount
    ) external view returns (uint256 fee);

    function sendMessage(
        address dstAddress,
        uint256 dstChainId,
        bytes calldata payload,
        uint256 estimatedGasAmount
    ) external payable;
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.8.23;
pragma experimental ABIEncoderV2;

interface ICICUserDefinedTypes {
    // Info of each user.
    // reward = user.`amount` * pool.`accRewardPerShare` - `rewardDebt`
    struct UserInfo {
        uint256 amount;
        uint256 rewardDebt;
        uint256 lastClaimTime;
    }

    // Info of each pool.
    struct PoolInfo {
        uint256 totalSupply;
        uint256 allocPoint; // How many allocation points assigned to this pool.
        uint256 lastRewardTime; // Last second that reward distribution occurs.
        uint256 accRewardPerShare; // Accumulated rewards per share, times ACC_REWARD_PRECISION. See below.
    }
    // Info about token emissions for a given time period.
    struct EmissionPoint {
        uint128 startTimeOffset;
        uint128 rewardsPerSecond;
    }
    // Info about ending time of reward emissions
    struct EndingTime {
        uint256 estimatedTime;
        uint256 lastUpdatedTime;
        uint256 updateCadence;
    }

    enum EligibilityModes {
        // check on all rToken transfers
        FULL,
        // only check on Claim
        LIMITED,
        // 0 eligibility functions run
        DISABLED
    }

    /********************** Events ***********************/
    // Emitted when rewardPerSecond is updated
    event RewardsPerSecondUpdated(uint256 indexed rewardsPerSecond);

    event BalanceUpdated(address indexed token, address indexed user, uint256 balance);

    event EmissionScheduleAppended(uint256[] startTimeOffsets, uint256[] rewardsPerSeconds);

    event Disqualified(address indexed user);

    event EligibilityModeUpdated(EligibilityModes indexed _newVal);

    event BatchAllocPointsUpdated(address[] _tokens, uint256[] _allocPoints);

    event AuthorizedContractUpdated(address _contract, bool _authorized);

    event EndingTimeUpdateCadence(uint256 indexed _lapse);

    event RewardDeposit(uint256 indexed _amount);

    event UpdateRequested(address indexed _user, uint256 feePaid);

    event KeeperConfigSet(address indexed keeper, uint256 executionGasLimit);

    event EmissionStarted(uint256 _startTime);

    event PoolAdded(address indexed _token, uint256 indexed _allocPoint);

    event WhitelistUpdated(address indexed _user, bool _status);

    event WhitelistToggled(bool _status);

    /********************** Errors ***********************/
    error AddressZero();

    error UnknownPool();

    error PoolExists();

    error AlreadyStarted();

    error NotAllowed();

    error ArrayLengthMismatch();

    error InvalidStart();

    error InvalidRToken();

    error InsufficientPermission();

    error AuthorizationAlreadySet();

    error NotVeContract();

    error NotWhitelisted();

    error NotEligible();

    error CadenceTooLong();

    error EligibleRequired();

    error NotValidPool();

    error OutOfRewards();

    error DuplicateSchedule();

    error ValueZero();

    error NotKeeper();

    error InsufficientFee();

    error TransferFailed();

    error UpdateInProgress();

    error ExemptedUser();

    error EthTransferFailed();

    error InvalidToken();
}

interface IChefIncentivesController {
    /**
     * @dev Called by the corresponding asset on any update that affects the rewards distribution
     * @param user The address of the user
     **/
    function handleActionBefore(address user) external;

    /**
     * @dev Called by the corresponding asset on any update that affects the rewards distribution
     * @param user The address of the user
     * @param userBalance The balance of the user of the asset in the lending pool
     **/
    function handleWithdrawAfter(address user, uint256 userBalance) external;

    /**
     * @dev Called by the locking contracts after locking or unlocking happens
     * @param user The address of the user
     **/
    function beforeLockUpdate(address user) external;

    /**
     * @notice Hook for lock update.
     * @dev Called by the locking contracts after locking or unlocking happens
     */
    function afterLockUpdate(address _user) external;

    function addPool(address _token, uint256 _allocPoint) external;

    function claim(address _user, address[] calldata _tokens) external;

    // function disqualifyUser(address _user, address _hunter) external returns (uint256 bounty);

    // function bountyForUser(address _user) external view returns (uint256 bounty);

    function allPendingRewards(address _user) external view returns (uint256 pending);

    function claimAll(address _user) external;

    // function claimBounty(address _user, bool _execute) external returns (bool issueBaseBounty);

    function setEligibilityExempt(address _address, bool _value) external;

    function manualStopEmissionsFor(address _user, address[] memory _tokens) external;

    function manualStopAllEmissionsFor(address _user) external;

    function setAddressWLstatus(address user, bool status) external;

    function toggleWhitelist() external;

}

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

pragma solidity ^0.8.23;

interface IPVeToken {
    // ============= USER INFO =============

    function balanceOf(address user) external view returns (uint128);

    function positionData(address user) external view returns (uint128 amount, uint128 expiry);

    // ============= META DATA =============

    function totalSupplyStored() external view returns (uint128);

    function totalSupplyCurrent() external returns (uint128);

    function totalSupplyAndBalanceCurrent(address user) external returns (uint128, uint128);
}

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

pragma solidity ^0.8.23;

import "./IPVeToken.sol";

import "../../libraries/VeBalanceLib.sol";
import "../../libraries/VeHistoryLib.sol";

interface IPVotingEscrowMainchain is IPVeToken {
    event NewLockPosition(address indexed user, uint128 amount, uint128 expiry);

    event Withdraw(address indexed user, uint128 amount);

    event BroadcastTotalSupply(VeBalance newTotalSupply, uint256[] chainIds);

    event BroadcastUserPosition(address indexed user, uint256[] chainIds);

    event UpdateRequestedFromVe(address indexed _user, uint256 feePaid);

    event UpdateRequestedFromVeCrossChain(address indexed _user, uint256 feePaid, uint256 chainId);

    event VeChefSet(address veChef);

    event KeeperConfigSet(address indexed keeper, uint256 indexed fee);

    event cicSet(address cic);

    // ============= ACTIONS =============

    function increaseLockPosition(uint128 additionalAmountToLock, uint128 expiry) payable external returns (uint128);

    function withdraw() external returns (uint128);

    function totalSupplyAt(uint128 timestamp) external view returns (uint128);

    function getUserHistoryLength(address user) external view returns (uint256);

    function getUserHistoryAt(address user, uint256 index) external view returns (Checkpoint memory);
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.23;

library Errors {
    // Liquidity Mining
    error VEInvalidNewExpiry(uint256 newExpiry);
    error VEExceededMaxLockTime();
    error VEInsufficientLockTime();
    error VENotAllowedReduceExpiry();
    error VEZeroAmountLocked();
    error VEPositionNotExpired();
    error VEZeroPosition();
    error VEZeroSlope(uint128 bias, uint128 slope);
    error VEReceiveOldSupply(uint256 msgTime);
    error InvalidWTime(uint256 wTime);
    error ExpiryInThePast(uint256 expiry);
    error ChainNotSupported(uint256 chainId);
    error EthTransferFailed();
    error UpdateInProgress();

    // Cross-Chain
    error MsgNotFromSendEndpoint(uint16 srcChainId, bytes path);
    error MsgNotFromReceiveEndpoint(address sender);
    error InsufficientFeeToSendMsg(uint256 currentFee, uint256 requiredFee);
    error ApproxDstExecutionGasNotSet();
    error InvalidRetryData();

    // GENERIC MSG
    error ArrayLengthMismatch();
    error ArrayEmpty();
    error ArrayOutOfBounds();
    error ZeroAddress();
    error FailedToSendEther();
    error InvalidMerkleProof();

    error OnlyLayerZeroEndpoint();
    error OnlyYT();
    error OnlyYCFactory();
    error OnlyWhitelisted();
    error LzChainIdNotSet(uint256 dstChainId);
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.23;

library MiniHelpers {
    function isCurrentlyExpired(uint256 expiry) internal view returns (bool) {
        return (expiry <= block.timestamp);
    }

    function isExpired(uint256 expiry, uint256 blockTime) internal pure returns (bool) {
        return (expiry <= blockTime);
    }

    function isTimeInThePast(uint256 timestamp) internal view returns (bool) {
        return (timestamp <= block.timestamp); // same definition as isCurrentlyExpired
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity ^0.8.23;

/* solhint-disable private-vars-leading-underscore, reason-string */

library PMath {
    uint256 internal constant ONE = 1e18; // 18 decimal places
    int256 internal constant IONE = 1e18; // 18 decimal places

    function subMax0(uint256 a, uint256 b) internal pure returns (uint256) {
        unchecked {
            return (a >= b ? a - b : 0);
        }
    }

    function subNoNeg(int256 a, int256 b) internal pure returns (int256) {
        require(a >= b, "negative");
        return a - b; // no unchecked since if b is very negative, a - b might overflow
    }

    function mulDown(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 product = a * b;
        unchecked {
            return product / ONE;
        }
    }

    function mulDown(int256 a, int256 b) internal pure returns (int256) {
        int256 product = a * b;
        unchecked {
            return product / IONE;
        }
    }

    function divDown(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 aInflated = a * ONE;
        unchecked {
            return aInflated / b;
        }
    }

    function divDown(int256 a, int256 b) internal pure returns (int256) {
        int256 aInflated = a * IONE;
        unchecked {
            return aInflated / b;
        }
    }

    function rawDivUp(uint256 a, uint256 b) internal pure returns (uint256) {
        return (a + b - 1) / b;
    }

    // @author Uniswap
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }

    function square(uint256 x) internal pure returns (uint256) {
        return x * x;
    }

    function squareDown(uint256 x) internal pure returns (uint256) {
        return mulDown(x, x);
    }

    function abs(int256 x) internal pure returns (uint256) {
        return uint256(x > 0 ? x : -x);
    }

    function neg(int256 x) internal pure returns (int256) {
        return x * (-1);
    }

    function neg(uint256 x) internal pure returns (int256) {
        return Int(x) * (-1);
    }

    function max(uint256 x, uint256 y) internal pure returns (uint256) {
        return (x > y ? x : y);
    }

    function max(int256 x, int256 y) internal pure returns (int256) {
        return (x > y ? x : y);
    }

    function min(uint256 x, uint256 y) internal pure returns (uint256) {
        return (x < y ? x : y);
    }

    function min(int256 x, int256 y) internal pure returns (int256) {
        return (x < y ? x : y);
    }

    /*///////////////////////////////////////////////////////////////
                               SIGNED CASTS
    //////////////////////////////////////////////////////////////*/

    function Int(uint256 x) internal pure returns (int256) {
        require(x <= uint256(type(int256).max));
        return int256(x);
    }

    function Int128(int256 x) internal pure returns (int128) {
        require(type(int128).min <= x && x <= type(int128).max);
        return int128(x);
    }

    function Int128(uint256 x) internal pure returns (int128) {
        return Int128(Int(x));
    }

    /*///////////////////////////////////////////////////////////////
                               UNSIGNED CASTS
    //////////////////////////////////////////////////////////////*/

    function Uint(int256 x) internal pure returns (uint256) {
        require(x >= 0);
        return uint256(x);
    }

    function Uint32(uint256 x) internal pure returns (uint32) {
        require(x <= type(uint32).max);
        return uint32(x);
    }

    function Uint64(uint256 x) internal pure returns (uint64) {
        require(x <= type(uint64).max);
        return uint64(x);
    }

    function Uint112(uint256 x) internal pure returns (uint112) {
        require(x <= type(uint112).max);
        return uint112(x);
    }

    function Uint96(uint256 x) internal pure returns (uint96) {
        require(x <= type(uint96).max);
        return uint96(x);
    }

    function Uint128(uint256 x) internal pure returns (uint128) {
        require(x <= type(uint128).max);
        return uint128(x);
    }

    function Uint192(uint256 x) internal pure returns (uint192) {
        require(x <= type(uint192).max);
        return uint192(x);
    }

    function isAApproxB(uint256 a, uint256 b, uint256 eps) internal pure returns (bool) {
        return mulDown(b, ONE - eps) <= a && a <= mulDown(b, ONE + eps);
    }

    function isAGreaterApproxB(uint256 a, uint256 b, uint256 eps) internal pure returns (bool) {
        return a >= b && a <= mulDown(b, ONE + eps);
    }

    function isASmallerApproxB(uint256 a, uint256 b, uint256 eps) internal pure returns (bool) {
        return a <= b && a >= mulDown(b, ONE - eps);
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.23;

import "./PMath.sol";
import "./Errors.sol";

struct VeBalance {
    uint128 bias;
    uint128 slope;
}

struct LockedPosition {
    uint128 amount;
    uint128 expiry;
}

library VeBalanceLib {
    using PMath for uint256;
    uint128 internal constant MAX_LOCK_TIME = 104 weeks;
    uint256 internal constant USER_VOTE_MAX_WEIGHT = 10 ** 18;

    function add(VeBalance memory a, VeBalance memory b) internal pure returns (VeBalance memory res) {
        res.bias = a.bias + b.bias;
        res.slope = a.slope + b.slope;
    }

    function sub(VeBalance memory a, VeBalance memory b) internal pure returns (VeBalance memory res) {
        res.bias = a.bias - b.bias;
        res.slope = a.slope - b.slope;
    }

    function sub(VeBalance memory a, uint128 slope, uint128 expiry) internal pure returns (VeBalance memory res) {
        res.slope = a.slope - slope;
        res.bias = a.bias - slope * expiry;
    }

    function isExpired(VeBalance memory a) internal view returns (bool) {
        return a.slope * uint128(block.timestamp) >= a.bias;
    }

    function getCurrentValue(VeBalance memory a) internal view returns (uint128) {
        if (isExpired(a)) return 0;

        return getValueAt(a, uint128(block.timestamp));
    }

    function getValueAt(VeBalance memory a, uint128 t) internal pure returns (uint128) {
        if (a.slope * t > a.bias) {
            return 0;
        }
        return a.bias - a.slope * t;
    }

    function getExpiry(VeBalance memory a) internal pure returns (uint128) {
        if (a.slope == 0) revert Errors.VEZeroSlope(a.bias, a.slope);
        return a.bias / a.slope;
    }

    function convertToVeBalance(LockedPosition memory position) internal pure returns (VeBalance memory res) {
        res.slope = position.amount / MAX_LOCK_TIME;
        res.bias = res.slope * position.expiry;
    }

    function convertToVeBalance(LockedPosition memory position, uint256 weight) internal pure returns (VeBalance memory res) {
        res.slope = ((position.amount * weight) / MAX_LOCK_TIME / USER_VOTE_MAX_WEIGHT).Uint128();
        res.bias = res.slope * position.expiry;
    }

    function convertToVeBalance(uint128 amount, uint128 expiry) internal pure returns (uint128, uint128) {
        VeBalance memory balance = convertToVeBalance(LockedPosition(amount, expiry));
        return (balance.bias, balance.slope);
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
// Forked from OpenZeppelin (v4.5.0) (utils/Checkpoints.sol)
pragma solidity ^0.8.23;

import { PMath } from "./PMath.sol";
import { VeBalanceLib, VeBalance } from "./VeBalanceLib.sol";
import { WeekMath } from "./WeekMath.sol";

struct Checkpoint {
    uint128 timestamp;
    VeBalance value;
}

library CheckpointHelper {
    function assignWith(Checkpoint memory a, Checkpoint memory b) internal pure {
        a.timestamp = b.timestamp;
        a.value = b.value;
    }
}

library Checkpoints {
    struct History {
        Checkpoint[] _checkpoints;
    }

    function length(History storage self) internal view returns (uint256) {
        return self._checkpoints.length;
    }

    function get(History storage self, uint256 index) internal view returns (Checkpoint memory) {
        return self._checkpoints[index];
    }

    function push(History storage self, VeBalance memory value) internal {
        uint256 pos = self._checkpoints.length;
        if (pos > 0 && self._checkpoints[pos - 1].timestamp == WeekMath.getCurrentWeekStart()) {
            self._checkpoints[pos - 1].value = value;
        } else {
            self._checkpoints.push(Checkpoint({ timestamp: WeekMath.getCurrentWeekStart(), value: value }));
        }
    }
}

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

pragma solidity ^0.8.23;

library WeekMath {
    uint128 internal constant WEEK = 7 days;

    function getWeekStartTimestamp(uint128 timestamp) internal pure returns (uint128) {
        return (timestamp / WEEK) * WEEK;
    }

    function getCurrentWeekStart() internal view returns (uint128) {
        return getWeekStartTimestamp(uint128(block.timestamp));
    }

    function isValidWTime(uint256 time) internal pure returns (bool) {
        return time % WEEK == 0;
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.23;

import { IPVeToken } from "../interfaces/IVotingEscrow/IPVeToken.sol";

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

import { VeBalanceLib, VeBalance, LockedPosition } from "../libraries/VeBalanceLib.sol";
import { WeekMath } from "../libraries/WeekMath.sol";

/**
 * @dev this contract is an abstract for its mainchain and sidechain variant
 * PRINCIPLE:
 *   - All functions implemented in this contract should be either view or pure
 *     to ensure that no writing logic is inherited by sidechain version
 *
 *   - Mainchain version will handle the logic which are:
 *        + Deposit, withdraw, increase lock, increase amount
 *        + Mainchain logic will be ensured to have _totalSupply = linear sum of
 *          all users' veBalance such that their locks are not yet expired
 *        + Mainchain contract reserves 100% the right to write on sidechain
 *        + No other transaction is allowed to write on sidechain storage
 */
abstract contract VotingEscrowTokenBase is IPVeToken {
    using VeBalanceLib for VeBalance;
    using VeBalanceLib for LockedPosition;

    uint128 public constant WEEK = 1 weeks;
    uint128 public constant MAX_LOCK_TIME = 104 weeks;
    uint128 public constant MIN_LOCK_TIME = 1 weeks;

    VeBalance internal _totalSupply;

    mapping(address => LockedPosition) public positionData;

    uint256[50] private __gap;

    constructor() {}

    function balanceOf(address user) public view virtual returns (uint128) {
        return positionData[user].convertToVeBalance().getCurrentValue();
    }

    function totalSupplyStored() public view virtual returns (uint128) {
        return _totalSupply.getCurrentValue();
    }

    function totalSupplyCurrent() public virtual returns (uint128);

    function _isPositionExpired(address user) internal view returns (bool) {
        return MiniHelpers.isCurrentlyExpired(positionData[user].expiry);
    }

    function totalSupplyAndBalanceCurrent(address user) external returns (uint128, uint128) {
        return (totalSupplyCurrent(), balanceOf(user));
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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VeBalance","name":"value","type":"tuple"}],"internalType":"struct Checkpoint","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getUserHistoryLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint128","name":"additionalAmountToLock","type":"uint128"},{"internalType":"uint128","name":"newExpiry","type":"uint128"}],"name":"increaseLockPosition","outputs":[{"internalType":"uint128","name":"newVeBalance","type":"uint128"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint128","name":"additionalAmountToLock","type":"uint128"},{"internalType":"uint128","name":"newExpiry","type":"uint128"},{"internalType":"uint256[]","name":"chainIds","type":"uint256[]"}],"name":"increaseLockPositionAndBroadcast","outputs":[{"internalType":"uint128","name":"newVeBalance","type":"uint128"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_protocolToken","type":"address"},{"internalType":"address","name":"_msgSendEndpoint","type":"address"},{"internalType":"uint256","name":"_approxDstExecutionGas","type":"uint256"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"keeper","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastSlopeChangeAppliedAt","outputs":[{"internalType":"uint128","name":"","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"msgSendEndpoint","outputs":[{"internalType":"contract IPMsgSendEndpoint","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"positionData","outputs":[{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"uint128","name":"expiry","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"protocolToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"gas","type":"uint256"}],"name":"setApproxDstExecutionGas","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IChefIncentivesController","name":"_cic","type":"address"}],"name":"setCIC","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_keeper","type":"address"},{"internalType":"uint256","name":"_executionGasLimit","type":"uint256"}],"name":"setKeeperConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"setLastSlopeChangeAppliedAt","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IChefIncentivesController","name":"_veChef","type":"address"}],"name":"setVeChef","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint128","name":"","type":"uint128"}],"name":"slopeChanges","outputs":[{"internalType":"uint128","name":"","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"totalSupplyAndBalanceCurrent","outputs":[{"internalType":"uint128","name":"","type":"uint128"},{"internalType":"uint128","name":"","type":"uint128"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint128","name":"","type":"uint128"}],"name":"totalSupplyAt","outputs":[{"internalType":"uint128","name":"","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupplyCurrent","outputs":[{"internalType":"uint128","name":"","type":"uint128"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"totalSupplyStored","outputs":[{"internalType":"uint128","name":"","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"veChef","outputs":[{"internalType":"contract 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