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// SPDX-License-Identifier: BUSL-1.1

/**************************************************************************************************************************************************

 /$$      /$$             /$$     /$$             /$$$$$$$$ /$$                                                  
| $$$    /$$$            | $$    | $$            | $$_____/|__/                                                  
| $$$$  /$$$$  /$$$$$$  /$$$$$$  | $$$$$$$       | $$       /$$ /$$$$$$$   /$$$$$$  /$$$$$$$   /$$$$$$$  /$$$$$$ 
| $$ $$/$$ $$ /$$__  $$|_  $$_/  | $$__  $$      | $$$$$   | $$| $$__  $$ |____  $$| $$__  $$ /$$_____/ /$$__  $$
| $$  $$$| $$| $$  \ $$  | $$    | $$  \ $$      | $$__/   | $$| $$  \ $$  /$$$$$$$| $$  \ $$| $$      | $$$$$$$$
| $$\  $ | $$| $$  | $$  | $$ /$$| $$  | $$      | $$      | $$| $$  | $$ /$$__  $$| $$  | $$| $$      | $$_____/
| $$ \/  | $$|  $$$$$$/  |  $$$$/| $$  | $$      | $$      | $$| $$  | $$|  $$$$$$$| $$  | $$|  $$$$$$$|  $$$$$$$
|__/     |__/ \______/    \___/  |__/  |__/      |__/      |__/|__/  |__/ \_______/|__/  |__/ \_______/ \_______/
                                                                                                                 
                                                                                                                                                                                                                                                                                                                                                           
#### Website: https://moth.finance/
#### Author: kell

**************************************************************************************************************************************************/

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "../interfaces/IBasisAsset.sol";

import "../interfaces/IOracle.sol";

contract MothGenesisRewardPool is ReentrancyGuard {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    // governance
    address public operator;

    // Info of each user.
    struct UserInfo {
        uint256 amount; // How many LP tokens the user has provided.
        uint256 rewardDebt; // Reward debt. See explanation below.
    }

    // Info of each pool.
    struct PoolInfo {
        IERC20 token; // Address of LP token contract.
        uint256 depFee; // deposit fee that is applied to created pool.
        uint256 allocPoint; // How many allocation points assigned to this pool. MOTHs to distribute per block.
        uint256 lastRewardTime; // Last time that MOTHs distribution occurs.
        uint256 accMothPerShare; // Accumulated MOTHs per share, times 1e18. See below.
        bool isStarted; // if lastRewardTime has passed
        uint256 poolMothPerSec; // rewards per second for pool (acts as allocPoint)
    }
    
    IERC20 public moth;
    IOracle public mothOracle;
    mapping(uint256 => bool) public pegStabilityModuleFeeEnabled; // pid => is enabled
    mapping(uint256 => uint256) public pegStabilityModuleFee; // pid => fee in basis points (1000 = 100%)
    uint256 public minClaimThreshold = 1e12; // 0.000001 MOTH
    address public bribesSafe;

    // Info of each pool.
    PoolInfo[] public poolInfo;

    // Info of each user that stakes LP tokens.
    mapping(uint256 => mapping(address => UserInfo)) public userInfo;
    // Pending rewards for each user in each pool (pending rewards accrued since last deposit/withdrawal)
    mapping(uint256 => mapping(address => uint256)) public pendingRewards;

    // Total allocation points. Must be the sum of all allocation points in all pools.
    uint256 public totalAllocPoint = 0;

    // The time when MOTH mining starts.
    uint256 public poolStartTime;

    // The time when MOTH mining ends.
    uint256 public poolEndTime;
    uint256 public mothPerSecond = 0 ether;
    uint256 public runningTime = 4 days;

    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event RewardPaid(address indexed user, uint256 amount);

    constructor(
        address _moth,
        address _bribesSafe,
        uint256 _poolStartTime
    ) {
        require(block.timestamp < _poolStartTime, "pool cant be started in the past");
        if (_moth != address(0)) moth = IERC20(_moth);
        if(_bribesSafe != address(0)) bribesSafe = _bribesSafe;

        poolStartTime = _poolStartTime;
        poolEndTime = _poolStartTime + runningTime;
        operator = msg.sender;
        bribesSafe = _bribesSafe;
    }

    modifier onlyOperator() {
        require(operator == msg.sender, "MothGenesisRewardPool: caller is not the operator");
        _;
    }

    function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }

    function checkPoolDuplicate(IERC20 _token) internal view {
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            require(poolInfo[pid].token != _token, "MothGenesisRewardPool: existing pool?");
        }
    }

    // bulk add pools
    function addBulk(uint256[] calldata _allocPoints, uint256[] calldata _depFees, IERC20[] calldata _tokens, bool _withUpdate, uint256 _lastRewardTime) external onlyOperator {
        require(_allocPoints.length == _depFees.length && _allocPoints.length == _tokens.length, "MothGenesisRewardPool: invalid length");
        for (uint256 i = 0; i < _allocPoints.length; i++) {
            add(_allocPoints[i], _depFees[i], _tokens[i], _withUpdate, _lastRewardTime);
        }
    }

    // Add new lp to the pool. Can only be called by operator.
    function add(
        uint256 _allocPoint,
        uint256 _depFee,
        IERC20 _token,
        bool _withUpdate,
        uint256 _lastRewardTime
    ) public onlyOperator {
        checkPoolDuplicate(_token);
        if (_withUpdate) {
            massUpdatePools();
        }
        if (block.timestamp < poolStartTime) {
            // chef is sleeping
            if (_lastRewardTime == 0) {
                _lastRewardTime = poolStartTime;
            } else {
                if (_lastRewardTime < poolStartTime) {
                    _lastRewardTime = poolStartTime;
                }
            }
        } else {
            // chef is cooking
            if (_lastRewardTime == 0 || _lastRewardTime < block.timestamp) {
                _lastRewardTime = block.timestamp;
            }
        }
        bool _isStarted = (_lastRewardTime <= poolStartTime) || (_lastRewardTime <= block.timestamp);
        poolInfo.push(PoolInfo({
            token: _token,
            depFee: _depFee,
            allocPoint: _allocPoint,
            poolMothPerSec: _allocPoint,
            lastRewardTime: _lastRewardTime,
            accMothPerShare: 0,
            isStarted: _isStarted
        }));        

        pegStabilityModuleFeeEnabled[poolInfo.length - 1] = true; // default to true
        pegStabilityModuleFee[poolInfo.length - 1] = 950; // default to 95%

        if (_isStarted) {
            totalAllocPoint = totalAllocPoint.add(_allocPoint);
            mothPerSecond = mothPerSecond.add(_allocPoint);
        }
    }

    // Update the given pool's MOTH allocation point. Can only be called by the operator.
    function set(uint256 _pid, uint256 _allocPoint, uint256 _depFee) public onlyOperator {
        massUpdatePools();

        PoolInfo storage pool = poolInfo[_pid];
        require(_depFee < 100);  // deposit fee cant be more than 1%;
        pool.depFee = _depFee;

        if (pool.isStarted) {
            totalAllocPoint = totalAllocPoint.sub(pool.allocPoint).add(_allocPoint);
            mothPerSecond = mothPerSecond.sub(pool.poolMothPerSec).add(_allocPoint);
        }
        pool.allocPoint = _allocPoint;
        pool.poolMothPerSec = _allocPoint;
    }

    function bulkSet(uint256[] calldata _pids, uint256[] calldata _allocPoints, uint256[] calldata _depFees) external onlyOperator {
        require(_pids.length == _allocPoints.length && _pids.length == _depFees.length, "MothGenesisRewardPool: invalid length");
        for (uint256 i = 0; i < _pids.length; i++) {
            set(_pids[i], _allocPoints[i], _depFees[i]);
        }
    }

    // Return accumulate rewards over the given _from to _to block.
    function getGeneratedReward(uint256 _fromTime, uint256 _toTime) public view returns (uint256) {
        if (_fromTime >= _toTime) return 0;
        if (_toTime >= poolEndTime) {
            if (_fromTime >= poolEndTime) return 0;
            if (_fromTime <= poolStartTime) return poolEndTime.sub(poolStartTime).mul(mothPerSecond);
            return poolEndTime.sub(_fromTime).mul(mothPerSecond);
        } else {
            if (_toTime <= poolStartTime) return 0;
            if (_fromTime <= poolStartTime) return _toTime.sub(poolStartTime).mul(mothPerSecond);
            return _toTime.sub(_fromTime).mul(mothPerSecond);
        }
    }

    // View function to see pending MOTHs on frontend.
    function pendingMOTH(uint256 _pid, address _user) public view returns (uint256) {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accMothPerShare = pool.accMothPerShare;
        uint256 tokenSupply = pool.token.balanceOf(address(this));
        if (block.timestamp > pool.lastRewardTime && tokenSupply != 0) {
            uint256 _generatedReward = getGeneratedReward(pool.lastRewardTime, block.timestamp);
            uint256 _mothReward = _generatedReward.mul(pool.allocPoint).div(totalAllocPoint);
            accMothPerShare = accMothPerShare.add(_mothReward.mul(1e18).div(tokenSupply));
        }
        return user.amount.mul(accMothPerShare).div(1e18).sub(user.rewardDebt);
    }

    // View function to see pending MOTHs on frontend and any other pending rewards accumulated.
    function pendingMothAndPendingRewards(uint256 _pid, address _user) external view returns (uint256) {
        uint256 _pendingShare = pendingMOTH(_pid, _user);
        return _pendingShare.add(pendingRewards[_pid][_user]);
    }

    function massUpdatePools() public {
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            updatePool(pid);
        }
    }

    // massUpdatePoolsInRange
    function massUpdatePoolsInRange(uint256 _fromPid, uint256 _toPid) public {
        require(_fromPid <= _toPid, "MothGenesisRewardPool: invalid range");
        for (uint256 pid = _fromPid; pid <= _toPid; ++pid) {
            updatePool(pid);
        }
    }

    // Update reward variables of the given pool to be up-to-date.
    function updatePool(uint256 _pid) private {
        PoolInfo storage pool = poolInfo[_pid];
        if (block.timestamp <= pool.lastRewardTime) {
            return;
        }
        uint256 tokenSupply = pool.token.balanceOf(address(this));
        if (tokenSupply == 0) {
            pool.lastRewardTime = block.timestamp;
            return;
        }
        if (!pool.isStarted) {
            pool.isStarted = true;
            totalAllocPoint = totalAllocPoint.add(pool.allocPoint);
            mothPerSecond = mothPerSecond.add(pool.poolMothPerSec);
        }
        if (totalAllocPoint > 0) {
            uint256 _generatedReward = getGeneratedReward(pool.lastRewardTime, block.timestamp);
            uint256 _mothReward = _generatedReward.mul(pool.allocPoint).div(totalAllocPoint);
            pool.accMothPerShare = pool.accMothPerShare.add(_mothReward.mul(1e18).div(tokenSupply));
        }
        pool.lastRewardTime = block.timestamp;
    }

    // Deposit LP tokens.
    function deposit(uint256 _pid, uint256 _amount) public nonReentrant {
        address _sender = msg.sender;
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_sender];
        updatePool(_pid);
        if (user.amount > 0) {
            uint256 _pending = user.amount.mul(pool.accMothPerShare).div(1e18).sub(user.rewardDebt);
            if (_pending > 0) {
                // safeMothTransfer(_sender, _pending);
                // emit RewardPaid(_sender, _pending);

                // accrue pending rewards to be claimed later
                pendingRewards[_pid][_sender] = pendingRewards[_pid][_sender].add(_pending);
            }
        }
        if (_amount > 0 ) {
            pool.token.safeTransferFrom(_sender, address(this), _amount);
            uint256 depositDebt = _amount.mul(pool.depFee).div(10000);
            user.amount = user.amount.add(_amount.sub(depositDebt));
            pool.token.safeTransfer(bribesSafe, depositDebt);
        }
        user.rewardDebt = user.amount.mul(pool.accMothPerShare).div(1e18);
        emit Deposit(_sender, _pid, _amount);
    }

    // Withdraw LP tokens.
    function withdraw(uint256 _pid, uint256 _amount) public nonReentrant {
        address _sender = msg.sender;
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_sender];
        require(user.amount >= _amount, "withdraw: not good");
        updatePool(_pid);
        uint256 _pending = user.amount.mul(pool.accMothPerShare).div(1e18).sub(user.rewardDebt);
        if (_pending > 0) {
            // safeMothTransfer(_sender, _pending);
            // emit RewardPaid(_sender, _pending);

            // accrue pending rewards to be claimed later
            pendingRewards[_pid][_sender] = pendingRewards[_pid][_sender].add(_pending);
        }
        if (_amount > 0) {
            user.amount = user.amount.sub(_amount);
            pool.token.safeTransfer(_sender, _amount);
        }
        user.rewardDebt = user.amount.mul(pool.accMothPerShare).div(1e18);
        emit Withdraw(_sender, _pid, _amount);
    }

    function harvest(uint256 _pid) public payable nonReentrant { 
        address _sender = msg.sender;
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_sender];

        // Ensure rewards are updated
        updatePool(_pid);

        // Calculate the latest pending rewards
        uint256 _pending = user.amount.mul(pool.accMothPerShare).div(1e18).sub(user.rewardDebt);
        uint256 _accumulatedPending = pendingRewards[_pid][_sender];
        uint256 _rewardsToClaim = _pending.add(_accumulatedPending);

        // Ensure that the user is claiming an amount above the minimum threshold
        require(_rewardsToClaim >= minClaimThreshold, "Claim amount below minimum threshold");

        if (_rewardsToClaim > 0) {
            pendingRewards[_pid][_sender] = 0;

            uint256 amountEthToPay = 0;
            if (pegStabilityModuleFeeEnabled[_pid]) {
                uint256 currentMOTHPriceInEth = mothOracle.twap(address(moth), 1e18);
                amountEthToPay = (currentMOTHPriceInEth.mul(_rewardsToClaim).div(1e18)).mul(pegStabilityModuleFee[_pid]).div(1000);
                require(msg.value >= amountEthToPay, "insufficient Eth for PSM cost");
            } else {
                require(msg.value == 0, "MothRewardPool: invalid msg.value");
            }

            safeMothTransfer(_sender, _rewardsToClaim);
            emit RewardPaid(_sender, _rewardsToClaim);

            if (pegStabilityModuleFeeEnabled[_pid] && msg.value > amountEthToPay) {
                uint256 refundAmount = msg.value - amountEthToPay;
                (bool success, ) = _sender.call{value: refundAmount}("");
                require(success, "Refund failed");
            }
        }
        // Update the user’s reward debt
        user.rewardDebt = user.amount.mul(pool.accMothPerShare).div(1e18);
    }

    function harvestAll() public payable nonReentrant {
        address _sender = msg.sender;
        uint256 length = poolInfo.length;
        uint256 totalUserRewardsToClaim = 0;
        uint256 amountEthToPay = 0;

        for (uint256 pid = 0; pid < length; ++pid) {
            PoolInfo storage pool = poolInfo[pid];
            UserInfo storage user = userInfo[pid][_sender];

            // Ensure rewards are updated
            updatePool(pid);

            // Calculate the latest pending rewards
            uint256 _pending = user.amount.mul(pool.accMothPerShare).div(1e18).sub(user.rewardDebt);
            uint256 _accumulatedPending = pendingRewards[pid][_sender];
            uint256 _rewardsToClaim = _pending.add(_accumulatedPending);

            if (_rewardsToClaim > 0) {
                pendingRewards[pid][_sender] = 0;
                totalUserRewardsToClaim = totalUserRewardsToClaim.add(_rewardsToClaim);

                if (pegStabilityModuleFeeEnabled[pid]) {
                    uint256 currentMOTHPriceInEth = mothOracle.twap(address(moth), 1e18);
                    amountEthToPay = amountEthToPay.add((currentMOTHPriceInEth.mul(_rewardsToClaim).div(1e18)).mul(pegStabilityModuleFee[pid]).div(1000));
                }
            }
            // Update the user’s reward debt
            user.rewardDebt = user.amount.mul(pool.accMothPerShare).div(1e18);
        }

        // Ensure that the user is claiming an amount above the minimum threshold
        require(totalUserRewardsToClaim >= minClaimThreshold, "Claim amount below minimum threshold");
        if (amountEthToPay == 0) {
            require(msg.value == 0, "MothRewardPool: invalid msg.value");
        } else {
            require(msg.value >= amountEthToPay, "insufficient Eth for PSM cost");
        }

        if (totalUserRewardsToClaim > 0) {
            safeMothTransfer(_sender, totalUserRewardsToClaim);
            emit RewardPaid(_sender, totalUserRewardsToClaim);

            if (msg.value > amountEthToPay) {
                uint256 refundAmount = msg.value - amountEthToPay;
                (bool success, ) = _sender.call{value: refundAmount}("");
                require(success, "Refund failed");
            }
        }
    }

    // Withdraw without caring about rewards. EMERGENCY ONLY.
    function emergencyWithdraw(uint256 _pid) public nonReentrant {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        uint256 _amount = user.amount;
        pendingRewards[_pid][msg.sender] = 0;
        user.amount = 0;
        user.rewardDebt = 0;
        pool.token.safeTransfer(msg.sender, _amount);
        emit EmergencyWithdraw(msg.sender, _pid, _amount);
    }

    // Safe moth transfer function, just in case if rounding error causes pool to not have enough MOTHs.
    function safeMothTransfer(address _to, uint256 _amount) internal {
        uint256 _mothBal = moth.balanceOf(address(this));
        if (_mothBal > 0) {
            if (_amount > _mothBal) {
                moth.safeTransfer(_to, _mothBal);
            } else {
                moth.safeTransfer(_to, _amount);
            }
        }
    }

    function setOperator(address _operator) external onlyOperator {
        operator = _operator;
    }

    function setBribesSafe(address _bribesSafe) public onlyOperator {
        bribesSafe = _bribesSafe;
    }

    function setPegStabilityModuleFee(uint256 _pegStabilityModuleFee, uint256 _pid) external onlyOperator {
        require(_pegStabilityModuleFee <= 300, "MothRewardPool: invalid peg stability module fee"); // max 30%
        pegStabilityModuleFee[_pid] = _pegStabilityModuleFee;
    }

    function setMothOracle(IOracle _mothOracle) external onlyOperator {
        mothOracle = _mothOracle;
    }

    function setPegStabilityModuleFeeEnabled(bool _enabled, uint256 _pid) external onlyOperator {
        pegStabilityModuleFeeEnabled[_pid] = _enabled;
    }

    function setMinClaimThreshold(uint256 _minClaimThreshold) external onlyOperator {
        require(_minClaimThreshold >= 0, "MothRewardPool: invalid min claim threshold");
        require(_minClaimThreshold <= 1e18, "MothRewardPool: invalid max claim threshold");
        minClaimThreshold = _minClaimThreshold;
    }

    // Can't withdraw MOTH or pool tokens from this contract.
    function governanceRecoverUnsupported(IERC20 _token, uint256 amount, address to) external onlyOperator {
        uint256 length = poolInfo.length;
        require(_token != moth, "MothGenesisRewardPool: Cannot withdraw MOTH");
        for (uint256 pid = 0; pid < length; ++pid) {
            PoolInfo storage pool = poolInfo[pid];
            require(_token != pool.token, "MothGenesisRewardPool: Token cannot be pool token");
        }
        _token.safeTransfer(to, amount);
    }

    /**
     * @notice Collects the Eth.
     * @param amount The amount of Eth to collect
     */

    function collectEth(uint256 amount) public onlyOperator {
        (bool sent,) = bribesSafe.call{value: amount}("");
        require(sent, "failed to send Eth");
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

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

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

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

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

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

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

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

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

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

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

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

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

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

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

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

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IBasisAsset {
    function mint(address recipient, uint256 amount) external returns (bool);

    function burn(uint256 amount) external;

    function burnFrom(address from, uint256 amount) external;

    function isOperator() external returns (bool);

    function operator() external view returns (address);

    function transferOperator(address newOperator_) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IOracle {
    function update() external;

    function consult(address _token, uint256 _amountIn) external view returns (uint256 amountOut);

    function twap(address _token, uint256 _amountIn) external view returns (uint256 _amountOut);
}

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

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[{"inputs":[{"internalType":"address","name":"_moth","type":"address"},{"internalType":"address","name":"_bribesSafe","type":"address"},{"internalType":"uint256","name":"_poolStartTime","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"EmergencyWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"RewardPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[{"internalType":"uint256","name":"_allocPoint","type":"uint256"},{"internalType":"uint256","name":"_depFee","type":"uint256"},{"internalType":"contract IERC20","name":"_token","type":"address"},{"internalType":"bool","name":"_withUpdate","type":"bool"},{"internalType":"uint256","name":"_lastRewardTime","type":"uint256"}],"name":"add","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"_allocPoints","type":"uint256[]"},{"internalType":"uint256[]","name":"_depFees","type":"uint256[]"},{"internalType":"contract IERC20[]","name":"_tokens","type":"address[]"},{"internalType":"bool","name":"_withUpdate","type":"bool"},{"internalType":"uint256","name":"_lastRewardTime","type":"uint256"}],"name":"addBulk","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"bribesSafe","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"_pids","type":"uint256[]"},{"internalType":"uint256[]","name":"_allocPoints","type":"uint256[]"},{"internalType":"uint256[]","name":"_depFees","type":"uint256[]"}],"name":"bulkSet","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"collectEth","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"}],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_fromTime","type":"uint256"},{"internalType":"uint256","name":"_toTime","type":"uint256"}],"name":"getGeneratedReward","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"to","type":"address"}],"name":"governanceRecoverUnsupported","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"}],"name":"harvest","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"harvestAll","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"massUpdatePools","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_fromPid","type":"uint256"},{"internalType":"uint256","name":"_toPid","type":"uint256"}],"name":"massUpdatePoolsInRange","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"minClaimThreshold","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"moth","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"mothOracle","outputs":[{"internalType":"contract IOracle","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"mothPerSecond","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"operator","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"pegStabilityModuleFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"pegStabilityModuleFeeEnabled","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"address","name":"_user","type":"address"}],"name":"pendingMOTH","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"address","name":"_user","type":"address"}],"name":"pendingMothAndPendingRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"address","name":"","type":"address"}],"name":"pendingRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolEndTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"poolInfo","outputs":[{"internalType":"contract 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000000000000000000000000d3003060e18a7afc318f050255291078e9cf76b3000000000000000000000000ca1416ac2dacd01f1f75bd98bcf6747708446c1f0000000000000000000000000000000000000000000000000000000068c5b120

-----Decoded View---------------
Arg [0] : _moth (address): 0xD3003060E18A7afC318F050255291078e9cf76B3
Arg [1] : _bribesSafe (address): 0xCa1416Ac2daCD01f1f75Bd98Bcf6747708446C1f
Arg [2] : _poolStartTime (uint256): 1757786400

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000d3003060e18a7afc318f050255291078e9cf76b3
Arg [1] : 000000000000000000000000ca1416ac2dacd01f1f75bd98bcf6747708446c1f
Arg [2] : 0000000000000000000000000000000000000000000000000000000068c5b120