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pragma solidity ^0.8.19;

import {IOwnable} from "@solidstate/contracts/access/ownable/IOwnable.sol";
import {LibFarmStorage} from "./LibFarmStorage.sol";
import {Scale} from "../tokens/Scale.sol";
import {ReentrancyGuard} from "@solidstate/contracts/security/reentrancy_guard/ReentrancyGuard.sol";
import {Pausable} from "@solidstate/contracts/security/pausable/Pausable.sol";
import {OwnableInternal} from "@solidstate/contracts/access/ownable/OwnableInternal.sol";

interface IUniswapV2Router02 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    )
        external
        payable
        returns (uint amountToken, uint amountETH, uint liquidity);

    function getAmountsOut(
        uint amountIn,
        address[] memory path
    ) external view returns (uint[] memory amounts);

    function getAmountsIn(
        uint amountOut,
        address[] memory path
    ) external view returns (uint[] memory amounts);
}

interface IERC20 {
    function totalSupply() external view returns (uint);

    function balanceOf(address account) external view returns (uint);

    function transfer(address recipient, uint amount) external returns (bool);

    function allowance(
        address owner,
        address spender
    ) external view returns (uint);

    function approve(address spender, uint amount) external returns (bool);

    function transferFrom(
        address sender,
        address recipient,
        uint amount
    ) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint value);
    event Approval(address indexed owner, address indexed spender, uint value);
}

contract FarmFacet is IERC20, ReentrancyGuard, Pausable, OwnableInternal {
    uint256 private constant MULTIPLIER = 1 ether;

    error FarmFacet__MinLockDuration();
    error FarmFacet__NotLocker();
    error FarmFacet__AlreadyUnlocked();
    error FarmFacet__StillLocked(uint256 _timeLeft);
    error FarmFacet__NotEnoughRewards();

    error FarmFacet__AlreadyVested();
    error FarmFacet__NotVester();

    error FarmFacet__NotTransferable();

    error FarmFacet__InvalidDuration();

    modifier setLastRewardBalance() {
        _;
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();
        fs.lastRewardBalance = Scale(payable(fs.rewardToken)).baseBalanceOf(
            address(this)
        );
    }

    /* internal */
    function updateRewardIndex(uint reward) internal {
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();

        if (fs.totalSupply != 0) {
            Scale _scale = Scale(payable(fs.rewardToken));
            uint256 currentRewardBalance = _scale.baseBalanceOf(address(this));

            // if S is directly transferred to contract via ERC20.transfer()
            if (reward == 0 && currentRewardBalance > fs.lastRewardBalance) {
                reward = currentRewardBalance - fs.lastRewardBalance;
            }

            fs.rewardIndex = fs.rewardIndex + ((reward * MULTIPLIER) / fs.totalSupply);
        }
    }

    function _calculateRewards(address account) internal view returns (uint) {
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();
        uint shares = fs.balanceOf[account];
        return
            (shares * (fs.rewardIndex - fs.rewardIndexOf[account])) /
            MULTIPLIER;
    }

    function _updateRewards(address account) internal {
        updateRewardIndex(0);
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();
        fs.earned[account] = fs.earned[account] + _calculateRewards(account);

        fs.rewardIndexOf[account] = fs.rewardIndex;
    }

    /* public */
    function lock(
        uint amount,
        uint256 duration
    ) external whenNotPaused nonReentrant setLastRewardBalance {
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();
        uint maxLockDuration = fs.maxLockDuration;
        uint minLockDuration = fs.minLockDuration;

        if (duration < minLockDuration) revert FarmFacet__MinLockDuration();
        if (duration > maxLockDuration) duration = maxLockDuration;

        _updateRewards(msg.sender);

        uint receiptAmount = duration >= maxLockDuration
            ? amount
            : _getReceiptAmount(amount, duration, minLockDuration, maxLockDuration);

        // create lock
        fs.currentLockingIndex = fs.currentLockingIndex + 1;
        fs.lockingIndexToLock[fs.currentLockingIndex] = LibFarmStorage.Lock({
            startTimestamp: block.timestamp,
            amount: amount,
            receiptAmount: receiptAmount,
            duration: duration,
            unlocked: 0,
            locker: msg.sender
        });

        uint256[] storage userLockingIndexList = fs.addressToLockingIndexList[
            msg.sender
        ];
        userLockingIndexList.push(fs.currentLockingIndex);

        // mint receipt tokens
        fs.balanceOf[msg.sender] = fs.balanceOf[msg.sender] + receiptAmount;
        fs.totalSupply = fs.totalSupply + receiptAmount;

        IERC20(fs.stakingToken).transferFrom(msg.sender, address(this), amount);
    }

    function unlock(
        uint _lockingIndex
    ) external whenNotPaused nonReentrant setLastRewardBalance {
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();

        LibFarmStorage.Lock storage _lock = fs.lockingIndexToLock[
            _lockingIndex
        ];

        if (_lock.locker != msg.sender) revert FarmFacet__NotLocker(); // prevent others from unlocking your lock
        if (_lock.unlocked != 0) revert FarmFacet__AlreadyUnlocked(); // prevent double spending
        if (_lock.startTimestamp + _lock.duration > block.timestamp)
            revert FarmFacet__StillLocked(
                _lock.startTimestamp + _lock.duration - block.timestamp
            ); // ensure lock period has passed

        _updateRewards(msg.sender);

        _lock.unlocked = 1;

        fs.balanceOf[msg.sender] = fs.balanceOf[msg.sender]- _lock.receiptAmount;
        fs.totalSupply = fs.totalSupply - _lock.receiptAmount;

        IERC20(fs.stakingToken).transfer(msg.sender, _lock.amount);
    }

    function vest() external whenNotPaused nonReentrant setLastRewardBalance {
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();

        _updateRewards(msg.sender);

        if (fs.earned[msg.sender] <= fs.addressToTotalVesting[msg.sender])
            revert FarmFacet__NotEnoughRewards();

        // create vest
        uint256 vestAmount = fs.earned[msg.sender] -
            fs.addressToTotalVesting[msg.sender];
        fs.currentVestIndex = fs.currentVestIndex + 1;
        fs.vestIndexToVest[fs.currentVestIndex] = LibFarmStorage.Vest({
            startTimestamp: block.timestamp,
            amount: vestAmount,
            vested: 0,
            vester: msg.sender
        });
        fs.addressToTotalVesting[msg.sender] = fs.addressToTotalVesting[msg.sender] + vestAmount;

        fs.addressToVestIndexList[msg.sender].push(fs.currentVestIndex);
    }

    function claim(
        uint256 _vestIndex
    ) external whenNotPaused nonReentrant setLastRewardBalance returns (uint) {
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();
        _updateRewards(msg.sender);

        LibFarmStorage.Vest storage _vest = fs.vestIndexToVest[_vestIndex];

        if (_vest.vested != 0) revert FarmFacet__AlreadyVested();
        if (_vest.vester != msg.sender) revert FarmFacet__NotVester();

        uint256 vestAmount = _vest.amount;

        Scale _scale = Scale(payable(fs.rewardToken));
        uint256 reward = _scale.baseToReflectionAmount(vestAmount);

        // early vest penalty
        uint256 toStaker;
        uint256 toTreasury;
        if (block.timestamp < _vest.startTimestamp + fs.vestDuration) {
            uint256 fees = (reward * fs.earlyVestPenalty) / 10_000; // 50%
            toStaker = fees * fs.penaltyToStaker / 10_000;
            toTreasury = fees * (10_000 - fs.penaltyToStaker) / 10_000;
            reward = reward - toStaker - toTreasury;
        }

        _vest.vested = 1;
        fs.earned[msg.sender] = fs.earned[msg.sender] - vestAmount;
        fs.addressToTotalVesting[msg.sender] = fs.addressToTotalVesting[msg.sender] - vestAmount;

        // transfers
        if (toTreasury != 0) {
            // swap fees to ETH
            IUniswapV2Router02 router = IUniswapV2Router02(fs.router);
            address[] memory path = new address[](2);
            path[0] = fs.rewardToken;
            path[1] = router.WETH();
            router.swapExactTokensForETHSupportingFeeOnTransferTokens(
                toTreasury,
                0,
                path,
                fs.treasury,
                block.timestamp
            );
        }
        if (toStaker != 0) {
            updateRewardIndex(_scale.reflectionToBaseAmount(toStaker)); // redistribute to stakers
        }
        _scale.transfer(msg.sender, reward);

        return reward;
    }

    /* internal */
    function _getReceiptAmount(
        uint amount,
        uint _duration, 
        uint _minLockDuration, 
        uint _maxLockDuration
    ) internal pure returns(uint) {

        int duration = int(_duration);
        int minLockDuration = int(_minLockDuration);
        int maxLockDuration = int(_maxLockDuration);

        int durationSpan = maxLockDuration - minLockDuration;
        int linearFactor = 1_000 + (9_000 * (duration - minLockDuration) / durationSpan);
        int limit = durationSpan / 172_800;
        int curveFactor = 1_000 * limit;
        for(
            int i = -limit; 
            i < limit;
        ) {
            curveFactor = 
                curveFactor -
                _abs(
                    500 - 
                    (1_000 * (duration + (i * 86_400) - minLockDuration)) / durationSpan
                );
            unchecked { i = i + 1; }
        }
        return amount * uint(linearFactor + curveFactor / 10_000) / 10_000;
    }

    function _abs(int val) internal pure returns (int) {
        return val > 0 ? val : -val;
    }

    /* admin */
    function setLockDurations(
        uint minLockDuration,
        uint maxLockDuration,
        uint earlyVestPenalty,
        uint penaltyToStaker
    ) external onlyOwner {
        if (minLockDuration >= maxLockDuration)
            revert FarmFacet__InvalidDuration();
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();
        fs.minLockDuration = minLockDuration;
        fs.maxLockDuration = maxLockDuration;
        fs.earlyVestPenalty = earlyVestPenalty; // in BP
        fs.penaltyToStaker = penaltyToStaker; // in BP
    }

    function setVestDuration(uint256 vestDuration) external onlyOwner {
        LibFarmStorage.layout().vestDuration = vestDuration;
    }

    function setTokens(
        address _stakingToken,
        address _rewardToken
    ) external onlyOwner {
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();
        fs.stakingToken = _stakingToken;
        fs.rewardToken = _rewardToken;
    }

    function setTreasury(
        address _treasury,
        address _router
    ) external onlyOwner {
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();
        fs.treasury = _treasury;

        // approve
        Scale _scale = Scale(payable(fs.rewardToken));
        _scale.approve(fs.router, 0);
        fs.router = _router;
        _scale.approve(fs.router, type(uint256).max);
    }

    function setPauseStatus(bool _paused) external onlyOwner {
        if (_paused) {
            _pause();
        } else {
            _unpause();
        }
    }

    /* view */
    function calculateRewardsEarned(
        address account
    ) external view returns (uint) {
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();

        if (fs.totalSupply != 0) {
            // rewardIndex
            Scale _scale = Scale(payable(fs.rewardToken));
            uint256 _currentRewardBalance = _scale.baseBalanceOf(address(this));
            uint256 _reward = _currentRewardBalance - fs.lastRewardBalance;
            uint256 _rewardIndex = fs.rewardIndex +
                (_reward * MULTIPLIER) /
                fs.totalSupply;

            uint256 _shares = fs.balanceOf[account];

            return
                _scale.baseToReflectionAmount(
                    fs.earned[account] +
                        ((_shares *
                            (_rewardIndex - fs.rewardIndexOf[account])) /
                            MULTIPLIER) -
                        fs.addressToTotalVesting[account]
                );
        }
        return 0;
    }

    function getUserLockList(
        address _address
    )
        external
        view
        returns (
            LibFarmStorage.Lock[] memory _lockList,
            uint256[] memory lockingIndexList
        )
    {
        lockingIndexList = addressToLockingIndexList(_address);

        _lockList = new LibFarmStorage.Lock[](lockingIndexList.length);
        for (uint256 i; i < lockingIndexList.length; i++) {
            _lockList[i] = lockingIndexToLock(lockingIndexList[i]);
        }
    }

    function getUserVestList(
        address _address
    )
        external
        view
        returns (
            LibFarmStorage.Vest[] memory _vestList,
            uint256[] memory vestIndexList
        )
    {
        vestIndexList = addressToVestIndexList(_address);

        _vestList = new LibFarmStorage.Vest[](vestIndexList.length);

        for (uint256 i; i < vestIndexList.length; i++) {
            _vestList[i] = vestIndexToVest(vestIndexList[i]);
        }
    }

    function addressToLockingIndexList(
        address _address
    ) public view returns (uint256[] memory) {
        return LibFarmStorage.layout().addressToLockingIndexList[_address];
    }

    function lockingIndexToLock(
        uint256 _lockingIndex
    ) public view returns (LibFarmStorage.Lock memory) {
        return LibFarmStorage.layout().lockingIndexToLock[_lockingIndex];
    }

    function addressToVestIndexList(
        address _address
    ) public view returns (uint256[] memory) {
        return LibFarmStorage.layout().addressToVestIndexList[_address];
    }

    function vestIndexToVest(
        uint256 _vestIndex
    ) public view returns (LibFarmStorage.Vest memory) {
        return LibFarmStorage.layout().vestIndexToVest[_vestIndex];
    }

    function stakingToken() external view returns (address) {
        return LibFarmStorage.layout().stakingToken;
    }

    function rewardToken() external view returns (address) {
        return LibFarmStorage.layout().rewardToken;
    }

    function earned(address _address) external view returns (uint256) {
        return LibFarmStorage.layout().earned[_address];
    }

    function rewardIndex() external view returns (uint256) {
        return LibFarmStorage.layout().rewardIndex;
    }

    function getLockDuration() external view returns (uint256, uint256) {
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();
        return (fs.minLockDuration, fs.maxLockDuration);
    }

    function getVestDuration() external view returns (uint256, uint256) {
        LibFarmStorage.Layout storage fs = LibFarmStorage.layout();
        return (fs.vestDuration, fs.earlyVestPenalty);
    }

    /* ERC20 functions */
    function totalSupply() external view returns (uint) {
        return LibFarmStorage.layout().totalSupply;
    }

    function balanceOf(address account) external view returns (uint) {
        return LibFarmStorage.layout().balanceOf[account];
    }

    /* some ERC20 functions are disabled for receipt tokens */
    function transfer(
        address recipient,
        uint amount
    ) external pure returns (bool) {
        // receipt tokens are not transferable at this moment
        revert FarmFacet__NotTransferable();
    }

    function allowance(
        address owner,
        address spender
    ) external pure returns (uint) {
        // no allowance since not transferable
        revert FarmFacet__NotTransferable();
    }

    function approve(
        address spender,
        uint amount
    ) external pure returns (bool) {
        // not approvable since not transferable
        revert FarmFacet__NotTransferable();
    }

    function transferFrom(
        address sender,
        address recipient,
        uint amount
    ) external pure returns (bool) {
        // receipt tokens are not transferable at this moment
        revert FarmFacet__NotTransferable();
    }

    // function _transfer(address from, address to, uint256 amount) internal {
    //     require(from != address(0), "ERC20: transfer from the zero address");
    //     require(to != address(0), "ERC20: transfer to the zero address");

    //     LibFarmStorage.Layout storage fs = LibFarmStorage.layout();

    //     uint256 fromBalance = fs.balanceOf[from];
    //     require(
    //         fromBalance >= amount,
    //         "ERC20: transfer amount exceeds balance"
    //     );
    //     unchecked {
    //         fs.balanceOf[from] = fromBalance - amount;
    //         // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
    //         // decrementing then incrementing.
    //         fs.balanceOf[to] += amount;
    //     }

    //     emit Transfer(from, to, amount);
    // }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.2;

import "./ILayerZeroUserApplicationConfigUpgradeable.sol";

interface ILayerZeroEndpointUpgradeable is ILayerZeroUserApplicationConfigUpgradeable {
    // @notice send a LayerZero message to the specified address at a LayerZero endpoint.
    // @param _dstChainId - the destination chain identifier
    // @param _destination - the address on destination chain (in bytes). address length/format may vary by chains
    // @param _payload - a custom bytes payload to send to the destination contract
    // @param _refundAddress - if the source transaction is cheaper than the amount of value passed, refund the additional amount to this address
    // @param _zroPaymentAddress - the address of the ZRO token holder who would pay for the transaction
    // @param _adapterParams - parameters for custom functionality. e.g. receive airdropped native gas from the relayer on destination
    function send(uint16 _dstChainId, bytes calldata _destination, bytes calldata _payload, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable;

    // @notice used by the messaging library to publish verified payload
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source contract (as bytes) at the source chain
    // @param _dstAddress - the address on destination chain
    // @param _nonce - the unbound message ordering nonce
    // @param _gasLimit - the gas limit for external contract execution
    // @param _payload - verified payload to send to the destination contract
    function receivePayload(uint16 _srcChainId, bytes calldata _srcAddress, address _dstAddress, uint64 _nonce, uint _gasLimit, bytes calldata _payload) external;

    // @notice get the inboundNonce of a lzApp from a source chain which could be EVM or non-EVM chain
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    function getInboundNonce(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (uint64);

    // @notice get the outboundNonce from this source chain which, consequently, is always an EVM
    // @param _srcAddress - the source chain contract address
    function getOutboundNonce(uint16 _dstChainId, address _srcAddress) external view returns (uint64);

    // @notice gets a quote in source native gas, for the amount that send() requires to pay for message delivery
    // @param _dstChainId - the destination chain identifier
    // @param _userApplication - the user app address on this EVM chain
    // @param _payload - the custom message to send over LayerZero
    // @param _payInZRO - if false, user app pays the protocol fee in native token
    // @param _adapterParam - parameters for the adapter service, e.g. send some dust native token to dstChain
    function estimateFees(uint16 _dstChainId, address _userApplication, bytes calldata _payload, bool _payInZRO, bytes calldata _adapterParam) external view returns (uint nativeFee, uint zroFee);

    // @notice get this Endpoint's immutable source identifier
    function getChainId() external view returns (uint16);

    // @notice the interface to retry failed message on this Endpoint destination
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    // @param _payload - the payload to be retried
    function retryPayload(uint16 _srcChainId, bytes calldata _srcAddress, bytes calldata _payload) external;

    // @notice query if any STORED payload (message blocking) at the endpoint.
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    function hasStoredPayload(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool);

    // @notice query if the _libraryAddress is valid for sending msgs.
    // @param _userApplication - the user app address on this EVM chain
    function getSendLibraryAddress(address _userApplication) external view returns (address);

    // @notice query if the _libraryAddress is valid for receiving msgs.
    // @param _userApplication - the user app address on this EVM chain
    function getReceiveLibraryAddress(address _userApplication) external view returns (address);

    // @notice query if the non-reentrancy guard for send() is on
    // @return true if the guard is on. false otherwise
    function isSendingPayload() external view returns (bool);

    // @notice query if the non-reentrancy guard for receive() is on
    // @return true if the guard is on. false otherwise
    function isReceivingPayload() external view returns (bool);

    // @notice get the configuration of the LayerZero messaging library of the specified version
    // @param _version - messaging library version
    // @param _chainId - the chainId for the pending config change
    // @param _userApplication - the contract address of the user application
    // @param _configType - type of configuration. every messaging library has its own convention.
    function getConfig(uint16 _version, uint16 _chainId, address _userApplication, uint _configType) external view returns (bytes memory);

    // @notice get the send() LayerZero messaging library version
    // @param _userApplication - the contract address of the user application
    function getSendVersion(address _userApplication) external view returns (uint16);

    // @notice get the lzReceive() LayerZero messaging library version
    // @param _userApplication - the contract address of the user application
    function getReceiveVersion(address _userApplication) external view returns (uint16);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.2;

interface ILayerZeroReceiverUpgradeable {
    // @notice LayerZero endpoint will invoke this function to deliver the message on the destination
    // @param _srcChainId - the source endpoint identifier
    // @param _srcAddress - the source sending contract address from the source chain
    // @param _nonce - the ordered message nonce
    // @param _payload - the signed payload is the UA bytes has encoded to be sent
    function lzReceive(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.2;

interface ILayerZeroUserApplicationConfigUpgradeable {
    // @notice set the configuration of the LayerZero messaging library of the specified version
    // @param _version - messaging library version
    // @param _chainId - the chainId for the pending config change
    // @param _configType - type of configuration. every messaging library has its own convention.
    // @param _config - configuration in the bytes. can encode arbitrary content.
    function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external;

    // @notice set the send() LayerZero messaging library version to _version
    // @param _version - new messaging library version
    function setSendVersion(uint16 _version) external;

    // @notice set the lzReceive() LayerZero messaging library version to _version
    // @param _version - new messaging library version
    function setReceiveVersion(uint16 _version) external;

    // @notice Only when the UA needs to resume the message flow in blocking mode and clear the stored payload
    // @param _srcChainId - the chainId of the source chain
    // @param _srcAddress - the contract address of the source contract at the source chain
    function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.2;

import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "../interfaces/ILayerZeroReceiverUpgradeable.sol";
import "../interfaces/ILayerZeroUserApplicationConfigUpgradeable.sol";
import "../interfaces/ILayerZeroEndpointUpgradeable.sol";
import "../../util/BytesLib.sol";

/*
 * a generic LzReceiver implementation
 */
abstract contract LzAppUpgradeable is Initializable, OwnableUpgradeable, ILayerZeroReceiverUpgradeable, ILayerZeroUserApplicationConfigUpgradeable {
    using BytesLib for bytes;

    // ua can not send payload larger than this by default, but it can be changed by the ua owner
    uint constant public DEFAULT_PAYLOAD_SIZE_LIMIT = 10000;

    ILayerZeroEndpointUpgradeable public lzEndpoint;
    mapping(uint16 => bytes) public trustedRemoteLookup;
    mapping(uint16 => mapping(uint16 => uint)) public minDstGasLookup;
    mapping(uint16 => uint) public payloadSizeLimitLookup;
    address public precrime;

    event SetPrecrime(address precrime);
    event SetTrustedRemote(uint16 _remoteChainId, bytes _path);
    event SetTrustedRemoteAddress(uint16 _remoteChainId, bytes _remoteAddress);
    event SetMinDstGas(uint16 _dstChainId, uint16 _type, uint _minDstGas);

    function __LzAppUpgradeable_init(address _endpoint) internal onlyInitializing {
        __Ownable_init_unchained();
        __LzAppUpgradeable_init_unchained(_endpoint);
    }

    function __LzAppUpgradeable_init_unchained(address _endpoint) internal onlyInitializing {
        lzEndpoint = ILayerZeroEndpointUpgradeable(_endpoint);
    }

    function lzReceive(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) public virtual override {
        // lzReceive must be called by the endpoint for security
        require(_msgSender() == address(lzEndpoint), "LzApp: invalid endpoint caller");

        bytes memory trustedRemote = trustedRemoteLookup[_srcChainId];
        // if will still block the message pathway from (srcChainId, srcAddress). should not receive message from untrusted remote.
        require(_srcAddress.length == trustedRemote.length && trustedRemote.length > 0 && keccak256(_srcAddress) == keccak256(trustedRemote), "LzApp: invalid source sending contract");

        _blockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload);
    }

    // abstract function - the default behaviour of LayerZero is blocking. See: NonblockingLzApp if you dont need to enforce ordered messaging
    function _blockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual;

    function _lzSend(uint16 _dstChainId, bytes memory _payload, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams, uint _nativeFee) internal virtual {
        bytes memory trustedRemote = trustedRemoteLookup[_dstChainId];
        require(trustedRemote.length != 0, "LzApp: destination chain is not a trusted source");
        _checkPayloadSize(_dstChainId, _payload.length);
        lzEndpoint.send{value: _nativeFee}(_dstChainId, trustedRemote, _payload, _refundAddress, _zroPaymentAddress, _adapterParams);
    }

    function _checkGasLimit(uint16 _dstChainId, uint16 _type, bytes memory _adapterParams, uint _extraGas) internal view virtual {
        uint providedGasLimit = _getGasLimit(_adapterParams);
        uint minGasLimit = minDstGasLookup[_dstChainId][_type] + _extraGas;
        require(minGasLimit > 0, "LzApp: minGasLimit not set");
        require(providedGasLimit >= minGasLimit, "LzApp: gas limit is too low");
    }

    function _getGasLimit(bytes memory _adapterParams) internal pure virtual returns (uint gasLimit) {
        require(_adapterParams.length >= 34, "LzApp: invalid adapterParams");
        assembly {
            gasLimit := mload(add(_adapterParams, 34))
        }
    }

    function _checkPayloadSize(uint16 _dstChainId, uint _payloadSize) internal view virtual {
        uint payloadSizeLimit = payloadSizeLimitLookup[_dstChainId];
        if (payloadSizeLimit == 0) { // use default if not set
            payloadSizeLimit = DEFAULT_PAYLOAD_SIZE_LIMIT;
        }
        require(_payloadSize <= payloadSizeLimit, "LzApp: payload size is too large");
    }

    //---------------------------UserApplication config----------------------------------------
    function getConfig(uint16 _version, uint16 _chainId, address, uint _configType) external view returns (bytes memory) {
        return lzEndpoint.getConfig(_version, _chainId, address(this), _configType);
    }

    // generic config for LayerZero user Application
    function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external override onlyOwner {
        lzEndpoint.setConfig(_version, _chainId, _configType, _config);
    }

    function setSendVersion(uint16 _version) external override onlyOwner {
        lzEndpoint.setSendVersion(_version);
    }

    function setReceiveVersion(uint16 _version) external override onlyOwner {
        lzEndpoint.setReceiveVersion(_version);
    }

    function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external override onlyOwner {
        lzEndpoint.forceResumeReceive(_srcChainId, _srcAddress);
    }

    // _path = abi.encodePacked(remoteAddress, localAddress)
    // this function set the trusted path for the cross-chain communication
    function setTrustedRemote(uint16 _srcChainId, bytes calldata _path) external onlyOwner {
        trustedRemoteLookup[_srcChainId] = _path;
        emit SetTrustedRemote(_srcChainId, _path);
    }

    function setTrustedRemoteAddress(uint16 _remoteChainId, bytes calldata _remoteAddress) external onlyOwner {
        trustedRemoteLookup[_remoteChainId] = abi.encodePacked(_remoteAddress, address(this));
        emit SetTrustedRemoteAddress(_remoteChainId, _remoteAddress);
    }

    function getTrustedRemoteAddress(uint16 _remoteChainId) external view returns (bytes memory) {
        bytes memory path = trustedRemoteLookup[_remoteChainId];
        require(path.length != 0, "LzApp: no trusted path record");
        return path.slice(0, path.length - 20); // the last 20 bytes should be address(this)
    }

    function setPrecrime(address _precrime) external onlyOwner {
        precrime = _precrime;
        emit SetPrecrime(_precrime);
    }

    function setMinDstGas(uint16 _dstChainId, uint16 _packetType, uint _minGas) external onlyOwner {
        require(_minGas > 0, "LzApp: invalid minGas");
        minDstGasLookup[_dstChainId][_packetType] = _minGas;
        emit SetMinDstGas(_dstChainId, _packetType, _minGas);
    }

    // if the size is 0, it means default size limit
    function setPayloadSizeLimit(uint16 _dstChainId, uint _size) external onlyOwner {
        payloadSizeLimitLookup[_dstChainId] = _size;
    }

    //--------------------------- VIEW FUNCTION ----------------------------------------
    function isTrustedRemote(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool) {
        bytes memory trustedSource = trustedRemoteLookup[_srcChainId];
        return keccak256(trustedSource) == keccak256(_srcAddress);
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint[45] private __gap;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.2;

import "./LzAppUpgradeable.sol";
import "../../util/ExcessivelySafeCall.sol";

/*
 * the default LayerZero messaging behaviour is blocking, i.e. any failed message will block the channel
 * this abstract class try-catch all fail messages and store locally for future retry. hence, non-blocking
 * NOTE: if the srcAddress is not configured properly, it will still block the message pathway from (srcChainId, srcAddress)
 */
abstract contract NonblockingLzAppUpgradeable is Initializable, LzAppUpgradeable {
    using ExcessivelySafeCall for address;

    function __NonblockingLzAppUpgradeable_init(address _endpoint) internal onlyInitializing {
        __Ownable_init_unchained();
        __LzAppUpgradeable_init_unchained(_endpoint);
    }

    function __NonblockingLzAppUpgradeable_init_unchained(address _endpoint) internal onlyInitializing {}

    mapping(uint16 => mapping(bytes => mapping(uint64 => bytes32))) public failedMessages;

    event MessageFailed(uint16 _srcChainId, bytes _srcAddress, uint64 _nonce, bytes _payload, bytes _reason);
    event RetryMessageSuccess(uint16 _srcChainId, bytes _srcAddress, uint64 _nonce, bytes32 _payloadHash);

    // overriding the virtual function in LzReceiver
    function _blockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual override {
        (bool success, bytes memory reason) = address(this).excessivelySafeCall(gasleft(), 150, abi.encodeWithSelector(this.nonblockingLzReceive.selector, _srcChainId, _srcAddress, _nonce, _payload));
        // try-catch all errors/exceptions
        if (!success) {
            _storeFailedMessage(_srcChainId, _srcAddress, _nonce, _payload, reason);
        }
    }

    function _storeFailedMessage(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload, bytes memory _reason) internal virtual {
        failedMessages[_srcChainId][_srcAddress][_nonce] = keccak256(_payload);
        emit MessageFailed(_srcChainId, _srcAddress, _nonce, _payload, _reason);
    }

    function nonblockingLzReceive(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) public virtual {
        // only internal transaction
        require(_msgSender() == address(this), "NonblockingLzApp: caller must be LzApp");
        _nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload);
    }

    //@notice override this function
    function _nonblockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual;

    function retryMessage(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) public payable virtual {
        // assert there is message to retry
        bytes32 payloadHash = failedMessages[_srcChainId][_srcAddress][_nonce];
        require(payloadHash != bytes32(0), "NonblockingLzApp: no stored message");
        require(keccak256(_payload) == payloadHash, "NonblockingLzApp: invalid payload");
        // clear the stored message
        failedMessages[_srcChainId][_srcAddress][_nonce] = bytes32(0);
        // execute the message. revert if it fails again
        _nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload);
        emit RetryMessageSuccess(_srcChainId, _srcAddress, _nonce, payloadHash);
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint[49] private __gap;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.2;

import "@openzeppelin/contracts-upgradeable/utils/introspection/IERC165Upgradeable.sol";

/**
 * @dev Interface of the IOFT core standard
 */
interface IOFTCoreUpgradeable is IERC165Upgradeable {
    /**
     * @dev estimate send token `_tokenId` to (`_dstChainId`, `_toAddress`)
     * _dstChainId - L0 defined chain id to send tokens too
     * _toAddress - dynamic bytes array which contains the address to whom you are sending tokens to on the dstChain
     * _amount - amount of the tokens to transfer
     * _useZro - indicates to use zro to pay L0 fees
     * _adapterParam - flexible bytes array to indicate messaging adapter services in L0
     */
    function estimateSendFee(uint16 _dstChainId, bytes calldata _toAddress, uint _amount, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee);

    /**
     * @dev send `_amount` amount of token to (`_dstChainId`, `_toAddress`) from `_from`
     * `_from` the owner of token
     * `_dstChainId` the destination chain identifier
     * `_toAddress` can be any size depending on the `dstChainId`.
     * `_amount` the quantity of tokens in wei
     * `_refundAddress` the address LayerZero refunds if too much message fee is sent
     * `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token)
     * `_adapterParams` is a flexible bytes array to indicate messaging adapter services
     */
    function sendFrom(address _from, uint16 _dstChainId, bytes calldata _toAddress, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable;

    /**
     * @dev returns the circulating amount of tokens on current chain
     */
    function circulatingSupply() external view returns (uint);

    /**
     * @dev returns the address of the ERC20 token
     */
    function token() external view returns (address);

    /**
     * @dev Emitted when `_amount` tokens are moved from the `_sender` to (`_dstChainId`, `_toAddress`)
     * `_nonce` is the outbound nonce
     */
    event SendToChain(uint16 indexed _dstChainId, address indexed _from, bytes _toAddress, uint _amount);

    /**
     * @dev Emitted when `_amount` tokens are received from `_srcChainId` into the `_toAddress` on the local chain.
     * `_nonce` is the inbound nonce.
     */
    event ReceiveFromChain(uint16 indexed _srcChainId, address indexed _to, uint _amount);

    event SetUseCustomAdapterParams(bool _useCustomAdapterParams);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.2;

import "./IOFTCoreUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";

/**
 * @dev Interface of the OFT standard
 */
interface IOFTUpgradeable is IOFTCoreUpgradeable, IERC20Upgradeable {

}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.2;

import "./IOFTCoreUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol";
import "../../lzApp/NonblockingLzAppUpgradeable.sol";

abstract contract OFTCoreUpgradeable is Initializable, NonblockingLzAppUpgradeable, ERC165Upgradeable, IOFTCoreUpgradeable {
    using BytesLib for bytes;

    uint public constant NO_EXTRA_GAS = 0;

    // packet type
    uint16 public constant PT_SEND = 0;

    bool public useCustomAdapterParams;

    function __OFTCoreUpgradeable_init(address _lzEndpoint) internal onlyInitializing {
        __Ownable_init_unchained();
        __LzAppUpgradeable_init_unchained(_lzEndpoint);
    }

    function __OFTCoreUpgradeable_init_unchained() internal onlyInitializing {}

    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) {
        return interfaceId == type(IOFTCoreUpgradeable).interfaceId || super.supportsInterface(interfaceId);
    }

    function estimateSendFee(uint16 _dstChainId, bytes calldata _toAddress, uint _amount, bool _useZro, bytes calldata _adapterParams) public view virtual override returns (uint nativeFee, uint zroFee) {
        // mock the payload for sendFrom()
        bytes memory payload = abi.encode(PT_SEND, _toAddress, _amount);
        return lzEndpoint.estimateFees(_dstChainId, address(this), payload, _useZro, _adapterParams);
    }

    function sendFrom(address _from, uint16 _dstChainId, bytes calldata _toAddress, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) public payable virtual override {
        _send(_from, _dstChainId, _toAddress, _amount, _refundAddress, _zroPaymentAddress, _adapterParams);
    }

    function setUseCustomAdapterParams(bool _useCustomAdapterParams) public virtual onlyOwner {
        useCustomAdapterParams = _useCustomAdapterParams;
        emit SetUseCustomAdapterParams(_useCustomAdapterParams);
    }

    function _nonblockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual override {
        uint16 packetType;
        assembly {
            packetType := mload(add(_payload, 32))
        }

        if (packetType == PT_SEND) {
            _sendAck(_srcChainId, _srcAddress, _nonce, _payload);
        } else {
            revert("OFTCore: unknown packet type");
        }
    }

    function _send(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams) internal virtual {
        _checkAdapterParams(_dstChainId, PT_SEND, _adapterParams, NO_EXTRA_GAS);

        uint amount = _debitFrom(_from, _dstChainId, _toAddress, _amount);

        bytes memory lzPayload = abi.encode(PT_SEND, _toAddress, amount);
        _lzSend(_dstChainId, lzPayload, _refundAddress, _zroPaymentAddress, _adapterParams, msg.value);

        emit SendToChain(_dstChainId, _from, _toAddress, amount);
    }

    function _sendAck(uint16 _srcChainId, bytes memory, uint64, bytes memory _payload) internal virtual {
        (, bytes memory toAddressBytes, uint amount) = abi.decode(_payload, (uint16, bytes, uint));

        address to = toAddressBytes.toAddress(0);

        amount = _creditTo(_srcChainId, to, amount);
        emit ReceiveFromChain(_srcChainId, to, amount);
    }

    function _checkAdapterParams(uint16 _dstChainId, uint16 _pkType, bytes memory _adapterParams, uint _extraGas) internal virtual {
        if (useCustomAdapterParams) {
            _checkGasLimit(_dstChainId, _pkType, _adapterParams, _extraGas);
        } else {
            require(_adapterParams.length == 0, "OFTCore: _adapterParams must be empty.");
        }
    }

    function _debitFrom(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _amount) internal virtual returns(uint);

    function _creditTo(uint16 _srcChainId, address _toAddress, uint _amount) internal virtual returns(uint);

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint[49] private __gap;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

import "./ILayerZeroUserApplicationConfig.sol";

interface ILayerZeroEndpoint is ILayerZeroUserApplicationConfig {
    // @notice send a LayerZero message to the specified address at a LayerZero endpoint.
    // @param _dstChainId - the destination chain identifier
    // @param _destination - the address on destination chain (in bytes). address length/format may vary by chains
    // @param _payload - a custom bytes payload to send to the destination contract
    // @param _refundAddress - if the source transaction is cheaper than the amount of value passed, refund the additional amount to this address
    // @param _zroPaymentAddress - the address of the ZRO token holder who would pay for the transaction
    // @param _adapterParams - parameters for custom functionality. e.g. receive airdropped native gas from the relayer on destination
    function send(uint16 _dstChainId, bytes calldata _destination, bytes calldata _payload, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable;

    // @notice used by the messaging library to publish verified payload
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source contract (as bytes) at the source chain
    // @param _dstAddress - the address on destination chain
    // @param _nonce - the unbound message ordering nonce
    // @param _gasLimit - the gas limit for external contract execution
    // @param _payload - verified payload to send to the destination contract
    function receivePayload(uint16 _srcChainId, bytes calldata _srcAddress, address _dstAddress, uint64 _nonce, uint _gasLimit, bytes calldata _payload) external;

    // @notice get the inboundNonce of a lzApp from a source chain which could be EVM or non-EVM chain
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    function getInboundNonce(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (uint64);

    // @notice get the outboundNonce from this source chain which, consequently, is always an EVM
    // @param _srcAddress - the source chain contract address
    function getOutboundNonce(uint16 _dstChainId, address _srcAddress) external view returns (uint64);

    // @notice gets a quote in source native gas, for the amount that send() requires to pay for message delivery
    // @param _dstChainId - the destination chain identifier
    // @param _userApplication - the user app address on this EVM chain
    // @param _payload - the custom message to send over LayerZero
    // @param _payInZRO - if false, user app pays the protocol fee in native token
    // @param _adapterParam - parameters for the adapter service, e.g. send some dust native token to dstChain
    function estimateFees(uint16 _dstChainId, address _userApplication, bytes calldata _payload, bool _payInZRO, bytes calldata _adapterParam) external view returns (uint nativeFee, uint zroFee);

    // @notice get this Endpoint's immutable source identifier
    function getChainId() external view returns (uint16);

    // @notice the interface to retry failed message on this Endpoint destination
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    // @param _payload - the payload to be retried
    function retryPayload(uint16 _srcChainId, bytes calldata _srcAddress, bytes calldata _payload) external;

    // @notice query if any STORED payload (message blocking) at the endpoint.
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    function hasStoredPayload(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool);

    // @notice query if the _libraryAddress is valid for sending msgs.
    // @param _userApplication - the user app address on this EVM chain
    function getSendLibraryAddress(address _userApplication) external view returns (address);

    // @notice query if the _libraryAddress is valid for receiving msgs.
    // @param _userApplication - the user app address on this EVM chain
    function getReceiveLibraryAddress(address _userApplication) external view returns (address);

    // @notice query if the non-reentrancy guard for send() is on
    // @return true if the guard is on. false otherwise
    function isSendingPayload() external view returns (bool);

    // @notice query if the non-reentrancy guard for receive() is on
    // @return true if the guard is on. false otherwise
    function isReceivingPayload() external view returns (bool);

    // @notice get the configuration of the LayerZero messaging library of the specified version
    // @param _version - messaging library version
    // @param _chainId - the chainId for the pending config change
    // @param _userApplication - the contract address of the user application
    // @param _configType - type of configuration. every messaging library has its own convention.
    function getConfig(uint16 _version, uint16 _chainId, address _userApplication, uint _configType) external view returns (bytes memory);

    // @notice get the send() LayerZero messaging library version
    // @param _userApplication - the contract address of the user application
    function getSendVersion(address _userApplication) external view returns (uint16);

    // @notice get the lzReceive() LayerZero messaging library version
    // @param _userApplication - the contract address of the user application
    function getReceiveVersion(address _userApplication) external view returns (uint16);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

interface ILayerZeroUserApplicationConfig {
    // @notice set the configuration of the LayerZero messaging library of the specified version
    // @param _version - messaging library version
    // @param _chainId - the chainId for the pending config change
    // @param _configType - type of configuration. every messaging library has its own convention.
    // @param _config - configuration in the bytes. can encode arbitrary content.
    function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external;

    // @notice set the send() LayerZero messaging library version to _version
    // @param _version - new messaging library version
    function setSendVersion(uint16 _version) external;

    // @notice set the lzReceive() LayerZero messaging library version to _version
    // @param _version - new messaging library version
    function setReceiveVersion(uint16 _version) external;

    // @notice Only when the UA needs to resume the message flow in blocking mode and clear the stored payload
    // @param _srcChainId - the chainId of the source chain
    // @param _srcAddress - the contract address of the source contract at the source chain
    function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external;
}

// SPDX-License-Identifier: Unlicense
/*
 * @title Solidity Bytes Arrays Utils
 * @author Gonçalo Sá <[email protected]>
 *
 * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity.
 *      The library lets you concatenate, slice and type cast bytes arrays both in memory and storage.
 */
pragma solidity >=0.8.0 <0.9.0;


library BytesLib {
    function concat(
        bytes memory _preBytes,
        bytes memory _postBytes
    )
    internal
    pure
    returns (bytes memory)
    {
        bytes memory tempBytes;

        assembly {
        // Get a location of some free memory and store it in tempBytes as
        // Solidity does for memory variables.
            tempBytes := mload(0x40)

        // Store the length of the first bytes array at the beginning of
        // the memory for tempBytes.
            let length := mload(_preBytes)
            mstore(tempBytes, length)

        // Maintain a memory counter for the current write location in the
        // temp bytes array by adding the 32 bytes for the array length to
        // the starting location.
            let mc := add(tempBytes, 0x20)
        // Stop copying when the memory counter reaches the length of the
        // first bytes array.
            let end := add(mc, length)

            for {
            // Initialize a copy counter to the start of the _preBytes data,
            // 32 bytes into its memory.
                let cc := add(_preBytes, 0x20)
            } lt(mc, end) {
            // Increase both counters by 32 bytes each iteration.
                mc := add(mc, 0x20)
                cc := add(cc, 0x20)
            } {
            // Write the _preBytes data into the tempBytes memory 32 bytes
            // at a time.
                mstore(mc, mload(cc))
            }

        // Add the length of _postBytes to the current length of tempBytes
        // and store it as the new length in the first 32 bytes of the
        // tempBytes memory.
            length := mload(_postBytes)
            mstore(tempBytes, add(length, mload(tempBytes)))

        // Move the memory counter back from a multiple of 0x20 to the
        // actual end of the _preBytes data.
            mc := end
        // Stop copying when the memory counter reaches the new combined
        // length of the arrays.
            end := add(mc, length)

            for {
                let cc := add(_postBytes, 0x20)
            } lt(mc, end) {
                mc := add(mc, 0x20)
                cc := add(cc, 0x20)
            } {
                mstore(mc, mload(cc))
            }

        // Update the free-memory pointer by padding our last write location
        // to 32 bytes: add 31 bytes to the end of tempBytes to move to the
        // next 32 byte block, then round down to the nearest multiple of
        // 32. If the sum of the length of the two arrays is zero then add
        // one before rounding down to leave a blank 32 bytes (the length block with 0).
            mstore(0x40, and(
            add(add(end, iszero(add(length, mload(_preBytes)))), 31),
            not(31) // Round down to the nearest 32 bytes.
            ))
        }

        return tempBytes;
    }

    function concatStorage(bytes storage _preBytes, bytes memory _postBytes) internal {
        assembly {
        // Read the first 32 bytes of _preBytes storage, which is the length
        // of the array. (We don't need to use the offset into the slot
        // because arrays use the entire slot.)
            let fslot := sload(_preBytes.slot)
        // Arrays of 31 bytes or less have an even value in their slot,
        // while longer arrays have an odd value. The actual length is
        // the slot divided by two for odd values, and the lowest order
        // byte divided by two for even values.
        // If the slot is even, bitwise and the slot with 255 and divide by
        // two to get the length. If the slot is odd, bitwise and the slot
        // with -1 and divide by two.
            let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2)
            let mlength := mload(_postBytes)
            let newlength := add(slength, mlength)
        // slength can contain both the length and contents of the array
        // if length < 32 bytes so let's prepare for that
        // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage
            switch add(lt(slength, 32), lt(newlength, 32))
            case 2 {
            // Since the new array still fits in the slot, we just need to
            // update the contents of the slot.
            // uint256(bytes_storage) = uint256(bytes_storage) + uint256(bytes_memory) + new_length
                sstore(
                _preBytes.slot,
                // all the modifications to the slot are inside this
                // next block
                add(
                // we can just add to the slot contents because the
                // bytes we want to change are the LSBs
                fslot,
                add(
                mul(
                div(
                // load the bytes from memory
                mload(add(_postBytes, 0x20)),
                // zero all bytes to the right
                exp(0x100, sub(32, mlength))
                ),
                // and now shift left the number of bytes to
                // leave space for the length in the slot
                exp(0x100, sub(32, newlength))
                ),
                // increase length by the double of the memory
                // bytes length
                mul(mlength, 2)
                )
                )
                )
            }
            case 1 {
            // The stored value fits in the slot, but the combined value
            // will exceed it.
            // get the keccak hash to get the contents of the array
                mstore(0x0, _preBytes.slot)
                let sc := add(keccak256(0x0, 0x20), div(slength, 32))

            // save new length
                sstore(_preBytes.slot, add(mul(newlength, 2), 1))

            // The contents of the _postBytes array start 32 bytes into
            // the structure. Our first read should obtain the `submod`
            // bytes that can fit into the unused space in the last word
            // of the stored array. To get this, we read 32 bytes starting
            // from `submod`, so the data we read overlaps with the array
            // contents by `submod` bytes. Masking the lowest-order
            // `submod` bytes allows us to add that value directly to the
            // stored value.

                let submod := sub(32, slength)
                let mc := add(_postBytes, submod)
                let end := add(_postBytes, mlength)
                let mask := sub(exp(0x100, submod), 1)

                sstore(
                sc,
                add(
                and(
                fslot,
                0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00
                ),
                and(mload(mc), mask)
                )
                )

                for {
                    mc := add(mc, 0x20)
                    sc := add(sc, 1)
                } lt(mc, end) {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } {
                    sstore(sc, mload(mc))
                }

                mask := exp(0x100, sub(mc, end))

                sstore(sc, mul(div(mload(mc), mask), mask))
            }
            default {
            // get the keccak hash to get the contents of the array
                mstore(0x0, _preBytes.slot)
            // Start copying to the last used word of the stored array.
                let sc := add(keccak256(0x0, 0x20), div(slength, 32))

            // save new length
                sstore(_preBytes.slot, add(mul(newlength, 2), 1))

            // Copy over the first `submod` bytes of the new data as in
            // case 1 above.
                let slengthmod := mod(slength, 32)
                let mlengthmod := mod(mlength, 32)
                let submod := sub(32, slengthmod)
                let mc := add(_postBytes, submod)
                let end := add(_postBytes, mlength)
                let mask := sub(exp(0x100, submod), 1)

                sstore(sc, add(sload(sc), and(mload(mc), mask)))

                for {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } lt(mc, end) {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } {
                    sstore(sc, mload(mc))
                }

                mask := exp(0x100, sub(mc, end))

                sstore(sc, mul(div(mload(mc), mask), mask))
            }
        }
    }

    function slice(
        bytes memory _bytes,
        uint256 _start,
        uint256 _length
    )
    internal
    pure
    returns (bytes memory)
    {
        require(_length + 31 >= _length, "slice_overflow");
        require(_bytes.length >= _start + _length, "slice_outOfBounds");

        bytes memory tempBytes;

        assembly {
            switch iszero(_length)
            case 0 {
            // Get a location of some free memory and store it in tempBytes as
            // Solidity does for memory variables.
                tempBytes := mload(0x40)

            // The first word of the slice result is potentially a partial
            // word read from the original array. To read it, we calculate
            // the length of that partial word and start copying that many
            // bytes into the array. The first word we copy will start with
            // data we don't care about, but the last `lengthmod` bytes will
            // land at the beginning of the contents of the new array. When
            // we're done copying, we overwrite the full first word with
            // the actual length of the slice.
                let lengthmod := and(_length, 31)

            // The multiplication in the next line is necessary
            // because when slicing multiples of 32 bytes (lengthmod == 0)
            // the following copy loop was copying the origin's length
            // and then ending prematurely not copying everything it should.
                let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod)))
                let end := add(mc, _length)

                for {
                // The multiplication in the next line has the same exact purpose
                // as the one above.
                    let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start)
                } lt(mc, end) {
                    mc := add(mc, 0x20)
                    cc := add(cc, 0x20)
                } {
                    mstore(mc, mload(cc))
                }

                mstore(tempBytes, _length)

            //update free-memory pointer
            //allocating the array padded to 32 bytes like the compiler does now
                mstore(0x40, and(add(mc, 31), not(31)))
            }
            //if we want a zero-length slice let's just return a zero-length array
            default {
                tempBytes := mload(0x40)
            //zero out the 32 bytes slice we are about to return
            //we need to do it because Solidity does not garbage collect
                mstore(tempBytes, 0)

                mstore(0x40, add(tempBytes, 0x20))
            }
        }

        return tempBytes;
    }

    function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) {
        require(_bytes.length >= _start + 20, "toAddress_outOfBounds");
        address tempAddress;

        assembly {
            tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000)
        }

        return tempAddress;
    }

    function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) {
        require(_bytes.length >= _start + 1 , "toUint8_outOfBounds");
        uint8 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x1), _start))
        }

        return tempUint;
    }

    function toUint16(bytes memory _bytes, uint256 _start) internal pure returns (uint16) {
        require(_bytes.length >= _start + 2, "toUint16_outOfBounds");
        uint16 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x2), _start))
        }

        return tempUint;
    }

    function toUint32(bytes memory _bytes, uint256 _start) internal pure returns (uint32) {
        require(_bytes.length >= _start + 4, "toUint32_outOfBounds");
        uint32 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x4), _start))
        }

        return tempUint;
    }

    function toUint64(bytes memory _bytes, uint256 _start) internal pure returns (uint64) {
        require(_bytes.length >= _start + 8, "toUint64_outOfBounds");
        uint64 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x8), _start))
        }

        return tempUint;
    }

    function toUint96(bytes memory _bytes, uint256 _start) internal pure returns (uint96) {
        require(_bytes.length >= _start + 12, "toUint96_outOfBounds");
        uint96 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0xc), _start))
        }

        return tempUint;
    }

    function toUint128(bytes memory _bytes, uint256 _start) internal pure returns (uint128) {
        require(_bytes.length >= _start + 16, "toUint128_outOfBounds");
        uint128 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x10), _start))
        }

        return tempUint;
    }

    function toUint256(bytes memory _bytes, uint256 _start) internal pure returns (uint256) {
        require(_bytes.length >= _start + 32, "toUint256_outOfBounds");
        uint256 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x20), _start))
        }

        return tempUint;
    }

    function toBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32) {
        require(_bytes.length >= _start + 32, "toBytes32_outOfBounds");
        bytes32 tempBytes32;

        assembly {
            tempBytes32 := mload(add(add(_bytes, 0x20), _start))
        }

        return tempBytes32;
    }

    function equal(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) {
        bool success = true;

        assembly {
            let length := mload(_preBytes)

        // if lengths don't match the arrays are not equal
            switch eq(length, mload(_postBytes))
            case 1 {
            // cb is a circuit breaker in the for loop since there's
            //  no said feature for inline assembly loops
            // cb = 1 - don't breaker
            // cb = 0 - break
                let cb := 1

                let mc := add(_preBytes, 0x20)
                let end := add(mc, length)

                for {
                    let cc := add(_postBytes, 0x20)
                // the next line is the loop condition:
                // while(uint256(mc < end) + cb == 2)
                } eq(add(lt(mc, end), cb), 2) {
                    mc := add(mc, 0x20)
                    cc := add(cc, 0x20)
                } {
                // if any of these checks fails then arrays are not equal
                    if iszero(eq(mload(mc), mload(cc))) {
                    // unsuccess:
                        success := 0
                        cb := 0
                    }
                }
            }
            default {
            // unsuccess:
                success := 0
            }
        }

        return success;
    }

    function equalStorage(
        bytes storage _preBytes,
        bytes memory _postBytes
    )
    internal
    view
    returns (bool)
    {
        bool success = true;

        assembly {
        // we know _preBytes_offset is 0
            let fslot := sload(_preBytes.slot)
        // Decode the length of the stored array like in concatStorage().
            let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2)
            let mlength := mload(_postBytes)

        // if lengths don't match the arrays are not equal
            switch eq(slength, mlength)
            case 1 {
            // slength can contain both the length and contents of the array
            // if length < 32 bytes so let's prepare for that
            // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage
                if iszero(iszero(slength)) {
                    switch lt(slength, 32)
                    case 1 {
                    // blank the last byte which is the length
                        fslot := mul(div(fslot, 0x100), 0x100)

                        if iszero(eq(fslot, mload(add(_postBytes, 0x20)))) {
                        // unsuccess:
                            success := 0
                        }
                    }
                    default {
                    // cb is a circuit breaker in the for loop since there's
                    //  no said feature for inline assembly loops
                    // cb = 1 - don't breaker
                    // cb = 0 - break
                        let cb := 1

                    // get the keccak hash to get the contents of the array
                        mstore(0x0, _preBytes.slot)
                        let sc := keccak256(0x0, 0x20)

                        let mc := add(_postBytes, 0x20)
                        let end := add(mc, mlength)

                    // the next line is the loop condition:
                    // while(uint256(mc < end) + cb == 2)
                        for {} eq(add(lt(mc, end), cb), 2) {
                            sc := add(sc, 1)
                            mc := add(mc, 0x20)
                        } {
                            if iszero(eq(sload(sc), mload(mc))) {
                            // unsuccess:
                                success := 0
                                cb := 0
                            }
                        }
                    }
                }
            }
            default {
            // unsuccess:
                success := 0
            }
        }

        return success;
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.7.6;

library ExcessivelySafeCall {
    uint256 constant LOW_28_MASK =
    0x00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff;

    /// @notice Use when you _really_ really _really_ don't trust the called
    /// contract. This prevents the called contract from causing reversion of
    /// the caller in as many ways as we can.
    /// @dev The main difference between this and a solidity low-level call is
    /// that we limit the number of bytes that the callee can cause to be
    /// copied to caller memory. This prevents stupid things like malicious
    /// contracts returning 10,000,000 bytes causing a local OOG when copying
    /// to memory.
    /// @param _target The address to call
    /// @param _gas The amount of gas to forward to the remote contract
    /// @param _maxCopy The maximum number of bytes of returndata to copy
    /// to memory.
    /// @param _calldata The data to send to the remote contract
    /// @return success and returndata, as `.call()`. Returndata is capped to
    /// `_maxCopy` bytes.
    function excessivelySafeCall(
        address _target,
        uint256 _gas,
        uint16 _maxCopy,
        bytes memory _calldata
    ) internal returns (bool, bytes memory) {
        // set up for assembly call
        uint256 _toCopy;
        bool _success;
        bytes memory _returnData = new bytes(_maxCopy);
        // dispatch message to recipient
        // by assembly calling "handle" function
        // we call via assembly to avoid memcopying a very large returndata
        // returned by a malicious contract
        assembly {
            _success := call(
            _gas, // gas
            _target, // recipient
            0, // ether value
            add(_calldata, 0x20), // inloc
            mload(_calldata), // inlen
            0, // outloc
            0 // outlen
            )
        // limit our copy to 256 bytes
            _toCopy := returndatasize()
            if gt(_toCopy, _maxCopy) {
                _toCopy := _maxCopy
            }
        // Store the length of the copied bytes
            mstore(_returnData, _toCopy)
        // copy the bytes from returndata[0:_toCopy]
            returndatacopy(add(_returnData, 0x20), 0, _toCopy)
        }
        return (_success, _returnData);
    }

    /// @notice Use when you _really_ really _really_ don't trust the called
    /// contract. This prevents the called contract from causing reversion of
    /// the caller in as many ways as we can.
    /// @dev The main difference between this and a solidity low-level call is
    /// that we limit the number of bytes that the callee can cause to be
    /// copied to caller memory. This prevents stupid things like malicious
    /// contracts returning 10,000,000 bytes causing a local OOG when copying
    /// to memory.
    /// @param _target The address to call
    /// @param _gas The amount of gas to forward to the remote contract
    /// @param _maxCopy The maximum number of bytes of returndata to copy
    /// to memory.
    /// @param _calldata The data to send to the remote contract
    /// @return success and returndata, as `.call()`. Returndata is capped to
    /// `_maxCopy` bytes.
    function excessivelySafeStaticCall(
        address _target,
        uint256 _gas,
        uint16 _maxCopy,
        bytes memory _calldata
    ) internal view returns (bool, bytes memory) {
        // set up for assembly call
        uint256 _toCopy;
        bool _success;
        bytes memory _returnData = new bytes(_maxCopy);
        // dispatch message to recipient
        // by assembly calling "handle" function
        // we call via assembly to avoid memcopying a very large returndata
        // returned by a malicious contract
        assembly {
            _success := staticcall(
            _gas, // gas
            _target, // recipient
            add(_calldata, 0x20), // inloc
            mload(_calldata), // inlen
            0, // outloc
            0 // outlen
            )
        // limit our copy to 256 bytes
            _toCopy := returndatasize()
            if gt(_toCopy, _maxCopy) {
                _toCopy := _maxCopy
            }
        // Store the length of the copied bytes
            mstore(_returnData, _toCopy)
        // copy the bytes from returndata[0:_toCopy]
            returndatacopy(add(_returnData, 0x20), 0, _toCopy)
        }
        return (_success, _returnData);
    }

    /**
     * @notice Swaps function selectors in encoded contract calls
     * @dev Allows reuse of encoded calldata for functions with identical
     * argument types but different names. It simply swaps out the first 4 bytes
     * for the new selector. This function modifies memory in place, and should
     * only be used with caution.
     * @param _newSelector The new 4-byte selector
     * @param _buf The encoded contract args
     */
    function swapSelector(bytes4 _newSelector, bytes memory _buf)
    internal
    pure
    {
        require(_buf.length >= 4);
        uint256 _mask = LOW_28_MASK;
        assembly {
        // load the first word of
            let _word := mload(add(_buf, 0x20))
        // mask out the top 4 bytes
        // /x
            _word := and(_word, _mask)
            _word := or(_newSelector, _word)
            mstore(add(_buf, 0x20), _word)
        }
    }
}

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

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../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.
 *
 * By default, the owner account will be the one that deploys the contract. 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 {
    address private _owner;

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

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

    function __Ownable_init_unchained() internal onlyInitializing {
        _transferOwnership(_msgSender());
    }

    /**
     * @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) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @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 {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

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

pragma solidity ^0.8.2;

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20Upgradeable {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

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

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

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

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

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

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

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

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {
    function __ERC165_init() internal onlyInitializing {
    }

    function __ERC165_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165Upgradeable).interfaceId;
    }

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

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

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165Upgradeable {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// 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

pragma solidity ^0.8.8;

import { IERC173 } from '../../interfaces/IERC173.sol';
import { IOwnableInternal } from './IOwnableInternal.sol';

interface IOwnable is IOwnableInternal, IERC173 {}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC173Internal } from '../../interfaces/IERC173Internal.sol';

interface IOwnableInternal is IERC173Internal {
    error Ownable__NotOwner();
    error Ownable__NotTransitiveOwner();
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC173 } from '../../interfaces/IERC173.sol';
import { AddressUtils } from '../../utils/AddressUtils.sol';
import { IOwnableInternal } from './IOwnableInternal.sol';
import { OwnableStorage } from './OwnableStorage.sol';

abstract contract OwnableInternal is IOwnableInternal {
    using AddressUtils for address;

    modifier onlyOwner() {
        if (msg.sender != _owner()) revert Ownable__NotOwner();
        _;
    }

    modifier onlyTransitiveOwner() {
        if (msg.sender != _transitiveOwner())
            revert Ownable__NotTransitiveOwner();
        _;
    }

    function _owner() internal view virtual returns (address) {
        return OwnableStorage.layout().owner;
    }

    function _transitiveOwner() internal view virtual returns (address owner) {
        owner = _owner();

        while (owner.isContract()) {
            try IERC173(owner).owner() returns (address transitiveOwner) {
                owner = transitiveOwner;
            } catch {
                break;
            }
        }
    }

    function _transferOwnership(address account) internal virtual {
        _setOwner(account);
    }

    function _setOwner(address account) internal virtual {
        OwnableStorage.Layout storage l = OwnableStorage.layout();
        emit OwnershipTransferred(l.owner, account);
        l.owner = account;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

library OwnableStorage {
    struct Layout {
        address owner;
    }

    bytes32 internal constant STORAGE_SLOT =
        keccak256('solidstate.contracts.storage.Ownable');

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC173Internal } from './IERC173Internal.sol';

/**
 * @title Contract ownership standard interface
 * @dev see https://eips.ethereum.org/EIPS/eip-173
 */
interface IERC173 is IERC173Internal {
    /**
     * @notice get the ERC173 contract owner
     * @return contract owner
     */
    function owner() external view returns (address);

    /**
     * @notice transfer contract ownership to new account
     * @param account address of new owner
     */
    function transferOwnership(address account) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

/**
 * @title Partial ERC173 interface needed by internal functions
 */
interface IERC173Internal {
    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IPausableInternal } from './IPausableInternal.sol';

interface IPausable is IPausableInternal {
    /**
     * @notice query whether contract is paused
     * @return status whether contract is paused
     */
    function paused() external view returns (bool status);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

interface IPausableInternal {
    error Pausable__Paused();
    error Pausable__NotPaused();

    event Paused(address account);
    event Unpaused(address account);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IPausable } from './IPausable.sol';
import { PausableInternal } from './PausableInternal.sol';

/**
 * @title Pausable security control module.
 */
abstract contract Pausable is IPausable, PausableInternal {
    /**
     * @inheritdoc IPausable
     */
    function paused() external view virtual returns (bool status) {
        status = _paused();
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IPausableInternal } from './IPausableInternal.sol';
import { PausableStorage } from './PausableStorage.sol';

/**
 * @title Internal functions for Pausable security control module.
 */
abstract contract PausableInternal is IPausableInternal {
    modifier whenNotPaused() {
        if (_paused()) revert Pausable__Paused();
        _;
    }

    modifier whenPaused() {
        if (!_paused()) revert Pausable__NotPaused();
        _;
    }

    /**
     * @notice query whether contract is paused
     * @return status whether contract is paused
     */
    function _paused() internal view virtual returns (bool status) {
        status = PausableStorage.layout().paused;
    }

    /**
     * @notice Triggers paused state, when contract is unpaused.
     */
    function _pause() internal virtual whenNotPaused {
        PausableStorage.layout().paused = true;
        emit Paused(msg.sender);
    }

    /**
     * @notice Triggers unpaused state, when contract is paused.
     */
    function _unpause() internal virtual whenPaused {
        delete PausableStorage.layout().paused;
        emit Unpaused(msg.sender);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

library PausableStorage {
    struct Layout {
        bool paused;
    }

    bytes32 internal constant STORAGE_SLOT =
        keccak256('solidstate.contracts.storage.Pausable');

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IReentrancyGuard {
    error ReentrancyGuard__ReentrantCall();
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IReentrancyGuard } from './IReentrancyGuard.sol';
import { ReentrancyGuardStorage } from './ReentrancyGuardStorage.sol';

/**
 * @title Utility contract for preventing reentrancy attacks
 */
abstract contract ReentrancyGuard is IReentrancyGuard {
    uint256 internal constant REENTRANCY_STATUS_LOCKED = 2;
    uint256 internal constant REENTRANCY_STATUS_UNLOCKED = 1;

    modifier nonReentrant() virtual {
        if (_isReentrancyGuardLocked()) revert ReentrancyGuard__ReentrantCall();
        _lockReentrancyGuard();
        _;
        _unlockReentrancyGuard();
    }

    /**
     * @notice returns true if the reentrancy guard is locked, false otherwise
     */
    function _isReentrancyGuardLocked() internal view virtual returns (bool) {
        return
            ReentrancyGuardStorage.layout().status == REENTRANCY_STATUS_LOCKED;
    }

    /**
     * @notice lock functions that use the nonReentrant modifier
     */
    function _lockReentrancyGuard() internal virtual {
        ReentrancyGuardStorage.layout().status = REENTRANCY_STATUS_LOCKED;
    }

    /**
     * @notice unlock functions that use the nonReentrant modifier
     */
    function _unlockReentrancyGuard() internal virtual {
        ReentrancyGuardStorage.layout().status = REENTRANCY_STATUS_UNLOCKED;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

library ReentrancyGuardStorage {
    struct Layout {
        uint256 status;
    }

    bytes32 internal constant STORAGE_SLOT =
        keccak256('solidstate.contracts.storage.ReentrancyGuard');

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { UintUtils } from './UintUtils.sol';

library AddressUtils {
    using UintUtils for uint256;

    error AddressUtils__InsufficientBalance();
    error AddressUtils__NotContract();
    error AddressUtils__SendValueFailed();

    function toString(address account) internal pure returns (string memory) {
        return uint256(uint160(account)).toHexString(20);
    }

    function isContract(address account) internal view returns (bool) {
        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    function sendValue(address payable account, uint256 amount) internal {
        (bool success, ) = account.call{ value: amount }('');
        if (!success) revert AddressUtils__SendValueFailed();
    }

    function functionCall(
        address target,
        bytes memory data
    ) internal returns (bytes memory) {
        return
            functionCall(target, data, 'AddressUtils: failed low-level call');
    }

    function functionCall(
        address target,
        bytes memory data,
        string memory error
    ) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, error);
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return
            functionCallWithValue(
                target,
                data,
                value,
                'AddressUtils: failed low-level call with value'
            );
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory error
    ) internal returns (bytes memory) {
        if (value > address(this).balance)
            revert AddressUtils__InsufficientBalance();
        return _functionCallWithValue(target, data, value, error);
    }

    /**
     * @notice execute arbitrary external call with limited gas usage and amount of copied return data
     * @dev derived from https://github.com/nomad-xyz/ExcessivelySafeCall (MIT License)
     * @param target recipient of call
     * @param gasAmount gas allowance for call
     * @param value native token value to include in call
     * @param maxCopy maximum number of bytes to copy from return data
     * @param data encoded call data
     * @return success whether call is successful
     * @return returnData copied return data
     */
    function excessivelySafeCall(
        address target,
        uint256 gasAmount,
        uint256 value,
        uint16 maxCopy,
        bytes memory data
    ) internal returns (bool success, bytes memory returnData) {
        returnData = new bytes(maxCopy);

        assembly {
            // execute external call via assembly to avoid automatic copying of return data
            success := call(
                gasAmount,
                target,
                value,
                add(data, 0x20),
                mload(data),
                0,
                0
            )

            // determine whether to limit amount of data to copy
            let toCopy := returndatasize()

            if gt(toCopy, maxCopy) {
                toCopy := maxCopy
            }

            // store the length of the copied bytes
            mstore(returnData, toCopy)

            // copy the bytes from returndata[0:toCopy]
            returndatacopy(add(returnData, 0x20), 0, toCopy)
        }
    }

    function _functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory error
    ) private returns (bytes memory) {
        if (!isContract(target)) revert AddressUtils__NotContract();

        (bool success, bytes memory returnData) = target.call{ value: value }(
            data
        );

        if (success) {
            return returnData;
        } else if (returnData.length > 0) {
            assembly {
                let returnData_size := mload(returnData)
                revert(add(32, returnData), returnData_size)
            }
        } else {
            revert(error);
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

/**
 * @title utility functions for uint256 operations
 * @dev derived from https://github.com/OpenZeppelin/openzeppelin-contracts/ (MIT license)
 */
library UintUtils {
    error UintUtils__InsufficientHexLength();

    bytes16 private constant HEX_SYMBOLS = '0123456789abcdef';

    function add(uint256 a, int256 b) internal pure returns (uint256) {
        return b < 0 ? sub(a, -b) : a + uint256(b);
    }

    function sub(uint256 a, int256 b) internal pure returns (uint256) {
        return b < 0 ? add(a, -b) : a - uint256(b);
    }

    function toString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return '0';
        }

        uint256 temp = value;
        uint256 digits;

        while (temp != 0) {
            digits++;
            temp /= 10;
        }

        bytes memory buffer = new bytes(digits);

        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }

        return string(buffer);
    }

    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return '0x00';
        }

        uint256 length = 0;

        for (uint256 temp = value; temp != 0; temp >>= 8) {
            unchecked {
                length++;
            }
        }

        return toHexString(value, length);
    }

    function toHexString(
        uint256 value,
        uint256 length
    ) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = '0';
        buffer[1] = 'x';

        unchecked {
            for (uint256 i = 2 * length + 1; i > 1; --i) {
                buffer[i] = HEX_SYMBOLS[value & 0xf];
                value >>= 4;
            }
        }

        if (value != 0) revert UintUtils__InsufficientHexLength();

        return string(buffer);
    }
}

//SPDX-License-Identifier: MIT

pragma solidity ^0.8.19;

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

library LibFarmStorage {
    bytes32 internal constant STORAGE_SLOT =
        keccak256("Farm.contracts.storage.LibFarmStorage");

    struct Lock {
        uint256 startTimestamp; // lock start time
        uint256 amount; // amount of LP
        uint256 receiptAmount; // amount of receipt tokens
        uint256 duration; // lock duration
        uint256 unlocked; // 0 false, 1 true
        address locker; // address that locked LP
    }

    struct Vest {
        uint256 startTimestamp; // reward vesting start time
        uint256 amount; // amount of S rewards vested in base amount
        uint256 vested; // 0 false, 1 true
        address vester; // address that is vesting
    }

    struct Layout {
        address stakingToken; // WETH-S-LP
        address rewardToken; // S
        address treasury; // treasury multisig or something
        address router; // router for swapping to ETH
        mapping(address => uint) balanceOf; // balance of receipt token
        uint256 totalSupply; // totalSupply of receipt tokens
        uint256 rewardIndex; // in base amount
        mapping(address => uint) rewardIndexOf;
        mapping(address => uint) earned;
        uint256 lastRewardBalance; // rewardToken balance of farm in base amounts
        /* lock */
        uint256 currentLockingIndex; // current index and current total locks
        uint256 minLockDuration; // currently 3 days
        uint256 maxLockDuration; // currently 90 days
        mapping(uint256 => Lock) lockingIndexToLock; // lockingIndex => Lock
        mapping(address => uint256[]) addressToLockingIndexList; // address => lockingIndexList that is still locked
        /* vest */
        uint256 currentVestIndex;
        uint256 earlyVestPenalty; // in BP currently 5_000
        uint256 vestDuration; // currently 7 days
        mapping(uint256 => Vest) vestIndexToVest; // vestIndex => Vest
        mapping(address => uint256[]) addressToVestIndexList; // address => vestIndexList
        mapping(address => uint256) addressToTotalVesting; // address => totalVesting
        uint256 penaltyToStaker;
    }

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.19;

import {IERC20Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";
import {IERC165Upgradeable} from "@openzeppelin/contracts-upgradeable/utils/introspection/IERC165Upgradeable.sol";

import {OFTCoreUpgradeable} from "@layerzerolabs/solidity-examples/contracts/contracts-upgradable/token/oft/OFTCoreUpgradeable.sol";
import {IOFTUpgradeable} from "@layerzerolabs/solidity-examples/contracts/contracts-upgradable/token/oft/IOFTUpgradeable.sol";
import {ILayerZeroEndpoint} from "@layerzerolabs/solidity-examples/contracts/interfaces/ILayerZeroEndpoint.sol";

import {SingleLinkedList, SingleLinkedListLib} from "../utils/SingleLinkedList.sol";

interface IUniswapV2Router02 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    )
        external
        payable
    returns (uint amountToken, uint amountETH, uint liquidity);

    function getAmountsOut(uint amountIn, address[] memory path)
        external
        view
    returns (uint[] memory amounts);

    function getAmountsIn(uint amountOut, address[] memory path)
        external
        view
    returns (uint[] memory amounts);
}

interface IUniswapV2Factory {
    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address);
}

interface IUniswapV2Pair {
    function sync() external;
}

// TODO
/**
 * - share totalSubLP across all chains?
 * 
 */

contract Scale is OFTCoreUpgradeable, IERC20Upgradeable {
    using SingleLinkedListLib for SingleLinkedList;

    /* -------------------------------------------------------------------------- */
    /*                                   events                                   */
    /* -------------------------------------------------------------------------- */
    error InvalidParameters();
    error RemoteStateOutOfSync(uint remoteState);
    error ERC20InsufficientAllowance(address, address, uint);
    error InsuffcientBalance(uint);
    error OFTCoreUnknownPacketType();
    error MaxTransaction();
    error MaxWallet();

    event Reflect(uint256 baseAmountReflected, uint256 totalReflected);
    event LaunchFee(address user, uint amount);

    event TransmitToRemote(
        uint16 indexed destinationChain,
        uint totalReflections
    );
    event AnswerToRemote(uint16 indexed remoteChainId, uint answer);
    event RequestRemoteState(uint16 indexed requestedChain);
    event ReceiveRemoteState(
        uint16 indexed sourceChain,
        uint receivedRemoteState
    );
    event XReflect(uint256 baseAmountReflected, uint256 totalReflected);

    /* -------------------------------------------------------------------------- */
    /*                                  constants                                 */
    /* -------------------------------------------------------------------------- */
    string constant _name = "ScaleX.gg | Scale";
    string constant _symbol = "S";

    // @custom:oz-upgrades-unsafe-allow state-variable-immutable
    IUniswapV2Router02 public immutable UNISWAP_V2_ROUTER;

    // --- BSC (Pancake)
    // IUniswapV2Router02 public constant UNISWAP_V2_ROUTER =
    //     IUniswapV2Router02(0x10ED43C718714eb63d5aA57B78B54704E256024E);

    // --- Polygon (Quickswap)
    // IUniswapV2Router02 public constant UNISWAP_V2_ROUTER =
    //     IUniswapV2Router02(0xa5E0829CaCEd8fFDD4De3c43696c57F7D7A678ff);

    // --- Fantom (Spookyswap)
    // IUniswapV2Router02 public constant UNISWAP_V2_ROUTER =
    //     IUniswapV2Router02(0xF491e7B69E4244ad4002BC14e878a34207E38c29);

    // --- Arbitrum (Camelot)
    // IUniswapV2Router02 public constant UNISWAP_V2_ROUTER =
    //     IUniswapV2Router02(0xc873fEcbd354f5A56E00E710B90EF4201db2448d);

    // --- Base (Alienbase)
    // IUniswapV2Router02 public constant UNISWAP_V2_ROUTER =
    //     IUniswapV2Router02(0x8c1A3cF8f83074169FE5D7aD50B978e1cD6b37c7);

    // --- Ethereum (Uniswap)
    // IUniswapV2Router02 public constant UNISWAP_V2_ROUTER =
    //     IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

    address constant DEAD = 0x000000000000000000000000000000000000dEaD;
    address constant ZERO = 0x0000000000000000000000000000000000000000;

    // supplies
    uint256 constant TOTAL_SUPPLY = 1_000_000 ether;
    uint256 constant PRESALE_SUPPLY = TOTAL_SUPPLY * 5_257 / MAX_BP;

    uint256 constant LZ_GAS_USAGE_LIMIT = 1_000_000;
    uint256 constant MAX_BP = 10_000;
    
    // fees
    uint256 constant MAX_FEE = 1_500; /* 15% */
    uint256 constant LAUNCH_FEE = 1_500; /* 15% */
    uint256 constant LAUNCH_FEE_DURATION = 1 days;

    // reflections
    uint256 constant REFLECTION_GROWTH_FACTOR = 20;
    uint256 constant MAX_BURN_REWARD_RATE = MAX_BP;
    uint256 constant ASYMPTOTE = 2;

    // TODO adjust
    uint256 private constant MIN_MAX_WALLET = (TOTAL_SUPPLY * 160) / MAX_BP; // 1.6%
    uint256 private constant MIN_MAX_TX = TOTAL_SUPPLY / 100;

    uint16 public constant PT_TRANSMIT_AND_REQUEST = 1;
    uint16 public constant PT_TRANSMIT = 2;
    uint16 public constant PT_RESPONSE = 3;

    /* -------------------------------------------------------------------------- */
    /*                                   states                                   */
    /* -------------------------------------------------------------------------- */

    struct Fee {
        // not to be swapped to native
        uint8 reflection;
        // sent off
        uint8 marketing;
        // to be swapped to native
        uint8 omnichain /* used to cover gas for transmitting reflections across chains */;
        uint8 treasury;
        uint8 referral /* 50% user buying free reduction & 50% to referrer */;
        uint8 lp /* local LP + chain expansion */;
        uint8 buyback;
        uint8 burn;
        uint128 total;
    }

    // L0 chain IDs sorted by avg gas costs in decreasing order
    SingleLinkedList public chains;

    uint16 private lzChainId;
    bool private liquidityInitialised;

    uint256 public feesEnabled;
    uint256 public swapThreshold; // denominated as reflected amount
    uint256 public totalReflected;

    uint256 private launchTime;
    uint256 private isInSwap;
    uint256 private isLowGasChain;

    // wallet limits
    uint256 private limitsEnabled;
    uint256 private maxWallet;
    uint256 private maxTx;

    // for auto lp burn
    uint256 private lastBurnTime;
    uint256 private burnRewardRate;
    uint256 private lpBurnRatePerDay;
    uint256 private burnTimeDiffCap;

    address private _uniswapPair;

    address private marketingFeeReceiver;
    address private lpFeeReceiver;
    address private buybackFeeReceiver;
    address private treasuryReceiver;
    address private lpBurnReceiver;

    Fee public buyFee;
    Fee public sellFee;

    mapping(address => uint256) private isRegistredPool;
    mapping(address => uint256) private _baseBalance;
    mapping(address => uint256) private txLimitsExcluded;

    mapping(address => mapping(address => uint256)) private _allowances;

    //@custom:oz-upgrades-unsafe-allow state-variable-immutable
    constructor(address router) {
        UNISWAP_V2_ROUTER = IUniswapV2Router02(router);
    }

    receive() external payable {}

    function initialize(
        address _lzEndpoint,
        address newMarketingFeeReceiver,
        address newLPfeeReceiver,
        address newBuyBackFeeReceiver,
        address newTreasuryReceiver,
        address newLPBurnReceiver
    ) public payable initializer {

        // initialise parents
        __Ownable_init_unchained();
        __LzAppUpgradeable_init_unchained(_lzEndpoint);

        // set variables
        swapThreshold = (TOTAL_SUPPLY * 20) / MAX_BP; /* 0.2% of total supply */

        // limits
        limitsEnabled = 1;
        maxWallet = TOTAL_SUPPLY * 160 / MAX_BP;
        maxTx = maxWallet;

        // LZ setup
        lzChainId = ILayerZeroEndpoint(_lzEndpoint).getChainId() + 100;
        chains.addNode(lzChainId, 0);

        marketingFeeReceiver = newMarketingFeeReceiver;
        lpFeeReceiver = newLPfeeReceiver;
        buybackFeeReceiver = newBuyBackFeeReceiver;
        treasuryReceiver = newTreasuryReceiver;
        lpBurnReceiver = newLPBurnReceiver;

        // exclude project wallets from limits
        txLimitsExcluded[address(this)] = 1;
        txLimitsExcluded[treasuryReceiver] = 1;
        txLimitsExcluded[marketingFeeReceiver] = 1;
        txLimitsExcluded[lpFeeReceiver] = 1;
        txLimitsExcluded[buybackFeeReceiver] = 1;
        txLimitsExcluded[lpBurnReceiver] = 1;

        buyFee = Fee({
            reflection: 100,
            omnichain: 100,
            buyback: 0,
            marketing: 100,
            lp: 200,
            treasury: 100,
            referral: 0,
            burn: 0,
            total: 600
        });
        sellFee = Fee({
            reflection: 100,
            omnichain: 100,
            buyback: 0,
            marketing: 100,
            lp: 200,
            treasury: 100,
            referral: 0,
            burn: 0,
            total: 600
        });

        // mint presale supply to treasury
        if (block.chainid == 1) {
            // only on Ethereum main net
            _baseBalance[treasuryReceiver] = PRESALE_SUPPLY;
            emit Transfer(address(0), treasuryReceiver, PRESALE_SUPPLY);
        }
    }

    function addLiquidity(uint sharesForChain) external payable onlyOwner {
        if (liquidityInitialised) revert();
        liquidityInitialised = true;

        uint liquiditySupply = TOTAL_SUPPLY - PRESALE_SUPPLY;
        uint tokensForLiquidity = (liquiditySupply * sharesForChain) / MAX_BP;

        // fund address(this) with desired amount of liquidity tokens
        _baseBalance[address(this)] = tokensForLiquidity;
        emit Transfer(address(0), address(this), tokensForLiquidity);

        // create uniswap pair
        _uniswapPair = IUniswapV2Factory(UNISWAP_V2_ROUTER.factory())
            .createPair(address(this), UNISWAP_V2_ROUTER.WETH());

        // set unlimited allowance for uniswap router
        _allowances[address(this)][address(UNISWAP_V2_ROUTER)] = type(uint256)
            .max;

        // add desired amount of liquidity to pair
        UNISWAP_V2_ROUTER.addLiquidityETH{value: msg.value}(
            address(this), // address token,
            tokensForLiquidity, // uint amountTokenDesired,
            tokensForLiquidity, // uint amountTokenMin,
            msg.value, // uint amountETHMin,
            treasuryReceiver, // address to,
            block.timestamp // uint deadline
        );

        // set fee variables
        isRegistredPool[_uniswapPair] = 1;
        feesEnabled = 1;
        launchTime = block.timestamp;

        // auto LP burn
        lastBurnTime = block.timestamp;
        // TODO set reward rate (burn rate is set manually as soon as we enabled the feature)
        // lpBurnRatePerDay = 1_000; /* 1% */ 
        burnRewardRate = 10_000;
        burnTimeDiffCap = 1 days;
    }

    /* -------------------------------------------------------------------------- */
    /*                                    ERC20                                   */
    /* -------------------------------------------------------------------------- */

    function approve(
        address spender,
        uint256 amount
    ) public override returns (bool) {
        _allowances[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }

    function approveMax(address spender) external returns (bool) {
        return approve(spender, type(uint256).max);
    }

    function transfer(
        address recipient,
        uint256 amount
    ) external override returns (bool) {
        return _transferFrom(msg.sender, recipient, amount);
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external override returns (bool) {
        if (_allowances[sender][msg.sender] != type(uint256).max) {
            if (_allowances[sender][msg.sender] < amount)
                revert ERC20InsufficientAllowance(
                    sender,
                    recipient,
                    _allowances[sender][msg.sender]
                );
            _allowances[sender][msg.sender] =
                _allowances[sender][msg.sender] -
                amount;
        }

        return _transferFrom(sender, recipient, amount);
    }

    /* -------------------------------------------------------------------------- */
    /*                                     OFT                                    */
    /* -------------------------------------------------------------------------- */

    function token() external view override returns (address) {
        return address(this);
    }

    function _debitFrom(
        address _from,
        uint16 /* dst chain id */,
        bytes memory /* toAddress */,
        uint _amount
    ) internal override returns (uint) {
        if (_from != msg.sender) {
            if (_allowances[_from][msg.sender] < _amount)
                revert ERC20InsufficientAllowance(_from, msg.sender, _amount);

            unchecked {
                _allowances[_from][msg.sender] =
                    _allowances[_from][msg.sender] -
                    _amount;
            }
        }

        if (_baseBalance[_from] < _amount) revert InsuffcientBalance(_amount);

        unchecked {
            // burn
            _baseBalance[_from] = _baseBalance[_from] - _amount;
        }
        return _amount;
    }

    function _creditTo(
        uint16 /* src chain id */,
        address _toAddress,
        uint _amount
    ) internal override returns (uint) {
        // mint
        _baseBalance[_toAddress] = _baseBalance[_toAddress] + _amount;
        return _amount;
    }

    /* -------------------------------------------------------------------------- */
    /*                                    Views                                   */
    /* -------------------------------------------------------------------------- */

    function supportsInterface(
        bytes4 interfaceId
    ) public view virtual override(OFTCoreUpgradeable) returns (bool) {
        return
            interfaceId == type(IOFTUpgradeable).interfaceId ||
            interfaceId == type(IERC20Upgradeable).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    function totalSupply() external pure override returns (uint256) {
        return TOTAL_SUPPLY;
    }

    function decimals() external pure returns (uint8) {
        return 18;
    }

    function name() external pure returns (string memory) {
        return _name;
    }

    function symbol() external pure returns (string memory) {
        return _symbol;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return baseToReflectionAmount(_baseBalance[account]);
    }

    function baseBalanceOf(address account) public view returns(uint256) {
        return _baseBalance[account];
    }

    function allowance(
        address holder,
        address spender
    ) external view override returns (uint256) {
        return _allowances[holder][spender];
    }

    function baseToReflectionAmount(
        uint256 baseAmount
    ) public view returns (uint256) {
        // ASYMPTOTE = N = post reflection supply approaches total supply * N
        // REFLECTION_GROWTH_FACTOR = M = speed of reflections
        // TODO form factor as constant
        uint numerator = (ASYMPTOTE - 1) * ASYMPTOTE * TOTAL_SUPPLY * baseAmount;
        uint denominator = (REFLECTION_GROWTH_FACTOR * totalReflected) + (ASYMPTOTE * TOTAL_SUPPLY);
        return ASYMPTOTE * baseAmount - (numerator / denominator);
    }

    function reflectionToBaseAmount(
        uint reflectionAmount
    ) public view returns (uint) {
        uint numerator = reflectionAmount * ((TOTAL_SUPPLY * ASYMPTOTE) + (REFLECTION_GROWTH_FACTOR * totalReflected));
        uint denominator = ASYMPTOTE * (TOTAL_SUPPLY + (REFLECTION_GROWTH_FACTOR * totalReflected));
        return numerator / denominator;
    }

    function circulatingSupply() public view returns (uint256) {
        return baseToReflectionAmount(TOTAL_SUPPLY - balanceOf(DEAD) - balanceOf(ZERO) - totalReflected);
    }

    function circulatingBaseSupply() public view returns (uint256) {
        return TOTAL_SUPPLY - balanceOf(DEAD) - balanceOf(ZERO) - totalReflected;
    }

    function getMaxWalletAndTx() external view returns (bool, uint, uint) {
        return (
            feesEnabled != 0,
            baseToReflectionAmount(maxWallet),
            baseToReflectionAmount(maxTx)
        );
    }

    function getLPBurnInfo() external view returns (uint, uint, uint, uint) {
        return (lpBurnRatePerDay, lastBurnTime, burnRewardRate, burnTimeDiffCap);
    }

    /* -------------------------------------------------------------------------- */
    /*                               Access restricted                            */
    /* -------------------------------------------------------------------------- */

    function clearStuckBalance() external payable onlyOwner {
        (bool success, ) = payable(msg.sender).call{
            value: address(this).balance
        }("");
        require(success);
    }

    function clearStuckToken() external payable onlyOwner {
        _transferFrom(address(this), msg.sender, balanceOf(address(this)));
    }

    function setSwapBackSettings(
        uint256 _enabled /* 0 = false, 1 = true */,
        uint256 _amount
    ) external payable onlyOwner {
        feesEnabled = _enabled;
        swapThreshold = _amount;
    }

    function changeFees(
        Fee calldata _buyFee,
        Fee calldata _sellFee
    ) external payable onlyOwner {
        // can cast all numbers, or just the first to save gas I think, not sure what the saving differences are like
        uint128 totalBuyFee = uint128(_buyFee.reflection) +
            _buyFee.marketing +
            _buyFee.omnichain +
            _buyFee.treasury +
            _buyFee.referral +
            _buyFee.lp +
            _buyFee.buyback +
            _buyFee.burn;

        uint128 totalSellFee = uint128(_sellFee.reflection) +
            _sellFee.marketing +
            _sellFee.omnichain +
            _sellFee.treasury +
            _sellFee.referral +
            _sellFee.lp +
            _sellFee.buyback +
            _sellFee.burn;

        if (
            totalBuyFee != _buyFee.total ||
            totalSellFee != _sellFee.total ||
            totalBuyFee > MAX_FEE ||
            totalSellFee > MAX_FEE
        ) revert InvalidParameters();

        buyFee = _buyFee;
        sellFee = _sellFee;
    }

    function setFeeReceivers(
        address newMarketingFeeReceiver,
        address newLPfeeReceiver,
        address newBuybackFeeReceiver,
        address newTreasuryReceiver,
        address newLPBurnReceiver
    ) external payable onlyOwner {
        marketingFeeReceiver = newMarketingFeeReceiver;
        lpFeeReceiver = newLPfeeReceiver;
        buybackFeeReceiver = newBuybackFeeReceiver;
        treasuryReceiver = newTreasuryReceiver;
        lpBurnReceiver = newLPBurnReceiver;
    }

    function setTrustedRemoteWithInfo(
        uint16 _remoteChainId,
        bytes calldata _remoteAddress,
        uint8 chainListPosition
    ) external payable onlyOwner {
        // we only add the chain to the list of lower gas chains if it actually is a lower gas chain
        if (chainListPosition != 0) {
            chains.addNode(_remoteChainId, chainListPosition);
        }
        trustedRemoteLookup[_remoteChainId] = abi.encodePacked(
            _remoteAddress,
            address(this)
        );
        emit SetTrustedRemoteAddress(_remoteChainId, _remoteAddress);
    }

    function setRegistredPool(
        address pool,
        uint state
    ) external payable onlyOwner {
        isRegistredPool[pool] = state;
    }

    function removeChain(uint data) external payable onlyOwner {
        chains.removeNode(data);
    }

    function setLPBurnData(
        uint256 newBurnRewardRate,
        uint256 newBurnTimeDiffCap,
        address receiver
    ) public payable onlyOwner {
        if (newBurnRewardRate > MAX_BURN_REWARD_RATE)
            revert InvalidParameters();
        burnRewardRate = newBurnRewardRate;
        lpBurnReceiver = receiver;
        burnTimeDiffCap = newBurnTimeDiffCap;
    }

    function manuallyBurnLP() public payable onlyOwner {
        _burnLP();
    }

    function toggleLimitsEnabled(bool target) public payable onlyOwner {
        limitsEnabled = target ? 1 : 0;
    }

    function setExcludeFromLimits(
        address toExclude,
        bool targetValue
    ) public payable onlyOwner {
        txLimitsExcluded[toExclude] = targetValue ? 1 : 0;
    }

    function setMaxWalletTransction(
        uint256 newMaxWallet,
        uint256 newMaxTx
    ) public payable onlyOwner {
        require(newMaxWallet >= MIN_MAX_WALLET && newMaxTx >= MIN_MAX_TX);
        maxWallet = newMaxWallet;
        maxTx = newMaxTx;
    }

    /* -------------------------------------------------------------------------- */
    /*                                   Internal                                 */
    /* -------------------------------------------------------------------------- */

    function _transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) internal returns (bool) {
        bool senderIsPool = isRegistredPool[sender] != 0; // = buy
        bool recipientIsPool = isRegistredPool[recipient] != 0; // = sell

        // take launch fee first
        uint baseLaunchFeeAmount;

        // take launch fee
        if (
            feesEnabled != 0 &&
            !senderIsPool &&
            isInSwap == 0 &&
            block.timestamp - launchTime < LAUNCH_FEE_DURATION
        ) {
            isInSwap = 1;

            // swap back
            address[] memory path = new address[](2);
            path[0] = address(this);
            path[1] = UNISWAP_V2_ROUTER.WETH();

            uint reflectedLaunchFeeAmount = (amount *
                LAUNCH_FEE *
                (LAUNCH_FEE_DURATION - (block.timestamp - launchTime))) /
                LAUNCH_FEE_DURATION /
                MAX_BP;

            baseLaunchFeeAmount = reflectionToBaseAmount(
                reflectedLaunchFeeAmount
            );

            _baseBalance[address(this)] =
                _baseBalance[address(this)] +
                baseLaunchFeeAmount;
            emit Transfer(sender, address(this), reflectedLaunchFeeAmount);
            emit LaunchFee(sender, reflectedLaunchFeeAmount);

            UNISWAP_V2_ROUTER
                .swapExactTokensForETHSupportingFeeOnTransferTokens(
                    reflectedLaunchFeeAmount,
                    0,
                    path,
                    treasuryReceiver,
                    block.timestamp
                );

            isInSwap = 0;
        }

        // Swap own token balance against pool if conditions are fulfilled
        // this has to be done before calculating baseAmount since it shifts
        // the balance in the liquidity pool, thus altering the result
        {
            if (
                isInSwap == 0 &&
                // this only swaps if it's not a buy, amplifying impacts of sells and
                // leaving buys untouched but also shifting gas costs of this to sellers only
                isRegistredPool[msg.sender] == 0 &&
                feesEnabled != 0 &&
                _baseBalance[address(this)] >= swapThreshold
            ) {
                isInSwap = 1;

                Fee memory memorySellFee = sellFee;

                uint256 stack_SwapThreshold = swapThreshold;
                uint256 amountToBurn = (stack_SwapThreshold *
                    memorySellFee.burn) / memorySellFee.total;
                uint256 amountToSwap = stack_SwapThreshold - amountToBurn;

                // burn, no further checks needed here
                uint256 baseAmountToBurn = reflectionToBaseAmount(amountToBurn);
                _baseBalance[address(this)] =
                    _baseBalance[address(this)] -
                    baseAmountToBurn;
                _baseBalance[DEAD] = _baseBalance[DEAD] + baseAmountToBurn;

                // swap non-burned tokens to ETH
                address[] memory path = new address[](2);
                path[0] = address(this);
                path[1] = UNISWAP_V2_ROUTER.WETH();

                UNISWAP_V2_ROUTER
                    .swapExactTokensForETHSupportingFeeOnTransferTokens(
                        amountToSwap,
                        0,
                        path,
                        address(this),
                        block.timestamp
                    );

                uint256 amountETH = address(this).balance;

                // share of fees that should be swapped to ETH
                uint256 totalSwapShare = memorySellFee.total -
                    memorySellFee.reflection -
                    memorySellFee.burn;

                /*
                 * Send proceeds to respective wallets, except for omnichain which remains in contract.
                 *
                 * We don't need to use return values of low level calls here since we can just manually withdraw
                 * funds in case of failure; receiver wallets are owner supplied though and should only be EOAs
                 * anyway
                 */

                // marketing
                payable(marketingFeeReceiver).call{
                    value: (amountETH * memorySellFee.marketing) /
                        totalSwapShare
                }("");
                // LP
                payable(lpFeeReceiver).call{
                    value: (amountETH * memorySellFee.lp) / totalSwapShare
                }("");
                // buyback
                payable(buybackFeeReceiver).call{
                    value: (amountETH * memorySellFee.buyback) / totalSwapShare
                }("");
                // treasury
                payable(treasuryReceiver).call{
                    value: (amountETH * memorySellFee.treasury) / totalSwapShare
                }("");

                isInSwap = 0;
            }
        }

        uint maxRequiredBaseInput;
        if(
            recipientIsPool &&
            lpBurnRatePerDay != 0 &&
            block.timestamp > lastBurnTime
        ) {
            uint totalSellFee = sellFee.total; // gas savings

            address[] memory path = new address[](2);
            path[0] = address(this);
            path[1] = UNISWAP_V2_ROUTER.WETH();
            uint outputIfSwappedBeforeBurn = UNISWAP_V2_ROUTER.getAmountsOut(
                feesEnabled != 0
                    ? amount * (MAX_BP - totalSellFee) / MAX_BP
                    : amount, 
                path
            )[1];

            _burnLP();
            
            // required input to receive correct output after paying fees
            maxRequiredBaseInput = reflectionToBaseAmount(
                UNISWAP_V2_ROUTER.getAmountsIn(
                    outputIfSwappedBeforeBurn, path
                )[0] * (
                    feesEnabled != 0 
                        ? MAX_BP / (MAX_BP - totalSellFee)
                        : 1
                )
            );
        }

        uint256 baseAmount = reflectionToBaseAmount(amount);

        if (_baseBalance[sender] < baseAmount)
            revert InsuffcientBalance(_baseBalance[sender]);

        /** 
         * If we burn before selling, the pool receives eg 10 tokens on 
         * 80 (+12.5%) instead of 10 tokens on 100 (+10%) and therefore 
         * creates a higher price to sell at.
         * 
         * We therefore tax the sold amount so that the received ETH amount
         * is the same as if the burn didn't happen beforehand, essentially
         * making the burn happen 'after' the swap.
         */
        uint256 postBurnFeeBaseAmount = baseAmount;
        if(maxRequiredBaseInput != 0 && maxRequiredBaseInput < baseAmount) {
            postBurnFeeBaseAmount = maxRequiredBaseInput;

            _baseBalance[address(this)] = _baseBalance[address(this)] + (baseAmount - maxRequiredBaseInput);
            emit Transfer(sender, address(this), baseAmount - maxRequiredBaseInput);
        }

        /**
         * @dev this modifies LP balance and thus also reflection amount that we
         * previously calculated, however the actually transferred amount will
         * still be based on the conversion from reflected amount to base amount
         * at the time of the transaction initiation and will NOT account for
         * changes made here
         */
        uint256 baseAmountReceived = feesEnabled != 0 && isInSwap == 0
            ? _performReflectionAndTakeFees(postBurnFeeBaseAmount, sender, senderIsPool)
            : postBurnFeeBaseAmount;

        if(limitsEnabled != 0) {
            if (
                !senderIsPool &&
                feesEnabled != 0 &&
                txLimitsExcluded[sender] == 0 &&
                baseAmount > maxTx
            ) revert MaxTransaction();

            if (
                feesEnabled != 0 &&
                !recipientIsPool &&
                txLimitsExcluded[recipient] == 0 &&
                _baseBalance[recipient] + baseAmountReceived > maxWallet
            ) revert MaxWallet();
        }

        _baseBalance[sender] = _baseBalance[sender] - baseAmount;
        _baseBalance[recipient] = _baseBalance[recipient] + baseAmountReceived;

        emit Transfer(sender, recipient, baseToReflectionAmount(baseAmountReceived));
        return true;
    }

    function _burnLP() internal {

        uint mem_lastBurnTime = lastBurnTime;
        uint256 pairBalance = _baseBalance[_uniswapPair]; // gas savings
        uint256 timeDelta = block.timestamp <= mem_lastBurnTime + burnTimeDiffCap
            ? (block.timestamp - mem_lastBurnTime)
            : 1 days;
        uint256 tokensToRemove = 
            pairBalance * 
            timeDelta * 
            lpBurnRatePerDay / 
            (1 days * MAX_BP);
        uint256 tokensToReward = tokensToRemove * burnRewardRate / MAX_BP;
        uint256 tokensToBurn = tokensToRemove - tokensToReward;

        lastBurnTime = block.timestamp;

        _baseBalance[_uniswapPair] = pairBalance - tokensToRemove;

        if(tokensToBurn != 0) {
            emit Transfer( _uniswapPair, address(0), baseToReflectionAmount(tokensToBurn));
        }

        if(tokensToReward != 0) {
            _baseBalance[lpBurnReceiver] = _baseBalance[lpBurnReceiver] + tokensToReward;
            emit Transfer(_uniswapPair, lpBurnReceiver, baseToReflectionAmount(tokensToReward));
        }

        // Update the uniswap pair's reserves
        IUniswapV2Pair(_uniswapPair).sync();
    }

    function _performReflectionAndTakeFees(
        uint256 baseAmount,
        address sender,
        bool buying
    ) internal returns (uint256) {
        Fee memory memoryBuyFee = buyFee;
        Fee memory memorySellFee = sellFee;

        // amount of fees in base amount (non-reflection adjusted)
        uint256 baseFeeAmount = buying
            ? (baseAmount * memoryBuyFee.total) / MAX_BP
            : (baseAmount * memorySellFee.total) / MAX_BP;

        // reflect
        uint256 baseAmountReflected = buying
            ? (baseAmount * memoryBuyFee.reflection) / MAX_BP
            : (baseAmount * memorySellFee.reflection) / MAX_BP;

        /**
         * Omnichain
         *
         * - integrate local delta into state
         * - send local delta to lower gas chains
         * - request local state from lowest gas chain
         * - set local state to minimum (=most recent) of local state & remote state
         */
        totalReflected = totalReflected + baseAmountReflected;
        emit Reflect(baseAmountReflected, totalReflected);
        _transmitReflectionToOtherChainsAndFetchState();

        // add entire non-reflected amount to contract balance for later swapping
        uint256 baseBalanceToContract = baseFeeAmount - baseAmountReflected;
        if (baseBalanceToContract != 0) {
            _baseBalance[address(this)] =
                _baseBalance[address(this)] +
                baseBalanceToContract;
            emit Transfer(
                sender,
                address(this),
                baseToReflectionAmount(baseBalanceToContract)
            );
        }

        return baseAmount - baseFeeAmount; // - launchFeeAmount;
    }

    /* -------------------------------------------------------------------------- */
    /*                                     L0                                     */
    /* -------------------------------------------------------------------------- */

    /**
     * @notice Multicast reflection state change to all chains that are tendencially
     * cheaper than the local chain & fetch reflection state of cheapest chain to
     * integrate into local state
     */
    function _transmitReflectionToOtherChainsAndFetchState() internal {
        if (chains.length < 2) return;

        uint256[] memory lowerGasChains = chains.getBeheadedList();
        uint256 lowerGasChainsLen = lowerGasChains.length; // gas savings
        uint mem_totalReflected = totalReflected; // gas savings

        bytes memory lzPayload = abi.encode(PT_TRANSMIT, mem_totalReflected);

        for (uint iterator; iterator < lowerGasChainsLen - 1; ) {
            (uint gasRequired /* zroFee */, ) = lzEndpoint.estimateFees(
                uint16(lowerGasChains[iterator]),
                address(this),
                lzPayload,
                false,
                abi.encodePacked(uint16(1), LZ_GAS_USAGE_LIMIT)
            );

            if (address(this).balance > gasRequired) {
                _lzSend(
                    // cheapest chain = destination chainId
                    uint16(lowerGasChains[iterator]),
                    // abi.encode()'ed bytes
                    lzPayload,
                    // (msg.sender will be this contract) refund address
                    // (LayerZero will refund any extra gas back to caller of send()
                    payable(this),
                    // future param, unused for this example
                    address(0x0),
                    // v1 adapterParams, specify custom destination gas qty
                    abi.encodePacked(uint16(1), LZ_GAS_USAGE_LIMIT),
                    address(this).balance
                );
                emit TransmitToRemote(
                    uint16(lowerGasChains[iterator]),
                    mem_totalReflected
                );
                unchecked {
                    iterator = iterator + 1;
                }
            } else {
                // abort transmissions if gas is insufficient
                return;
            }
        }

        uint256 lowestGasChainId = lowerGasChains[lowerGasChainsLen - 1];
        if (lzChainId != lowestGasChainId) {
            lzPayload = abi.encode(PT_TRANSMIT_AND_REQUEST, mem_totalReflected);

            (uint gasRequired /* zroFee */, ) = lzEndpoint.estimateFees(
                uint16(lowestGasChainId),
                address(this),
                lzPayload,
                false,
                abi.encodePacked(uint16(1), LZ_GAS_USAGE_LIMIT)
            );

            if (address(this).balance > gasRequired) {
                // fetch the state from the lowest gas chain
                _lzSend(
                    // destination chainId
                    uint16(lowestGasChainId),
                    // abi.encoded bytes
                    lzPayload,
                    // refund address
                    payable(this),
                    // future param, unused for this example
                    address(0x0),
                    // v1 adapterParams, specify custom destination gas qty
                    abi.encodePacked(uint16(1), LZ_GAS_USAGE_LIMIT),
                    address(this).balance
                );
                emit TransmitToRemote(
                    uint16(lowestGasChainId),
                    mem_totalReflected
                );
                emit RequestRemoteState(uint16(lowestGasChainId));
            }
        }
    }

    function _nonblockingLzReceive(
        uint16 _srcChainId,
        bytes memory _srcAddress,
        uint64 _nonce,
        bytes memory _payload
    ) internal virtual override {
        uint16 packetType;
        assembly {
            packetType := mload(add(_payload, 32))
        }

        if (packetType == PT_SEND) {
            // token transfers between chains
            _sendAck(_srcChainId, _srcAddress, _nonce, _payload);
        } else if (packetType == PT_TRANSMIT_AND_REQUEST) {
            _receiveReflectionAndSendLocalState(
                _srcChainId,
                _payload,
                true /* is request? */
            );
        } else if (packetType == PT_TRANSMIT) {
            _receiveReflectionAndSendLocalState(
                _srcChainId,
                _payload,
                false /* is request? */
            );
        } else if (packetType == PT_RESPONSE) {
            _receiveRemoteReflectionState(_payload);
        } else {
            revert OFTCoreUnknownPacketType();
        }
    }

    function _receiveReflectionAndSendLocalState(
        uint16 _srcChainId,
        bytes memory _payload,
        bool isReq
    ) internal {
        (, /* packet type */ uint remoteState) = abi.decode(
            _payload,
            (uint16, uint)
        );

        // update local reflection data
        if (remoteState > totalReflected) {
            uint diff = remoteState - totalReflected;
            totalReflected = remoteState;
            emit XReflect(diff, totalReflected);
            emit ReceiveRemoteState(_srcChainId, remoteState);
        }

        // transmission comes from higher gas chain that wants to know local state
        if (isReq) {
            // pack payload AFTER integrating remote delta
            bytes memory lzPayload = abi.encode(PT_RESPONSE, totalReflected);

            // send response to origin chain
            _lzSend(
                _srcChainId, // destination chainId
                lzPayload, // abi.encode()'ed bytes
                payable(this), // (msg.sender will be this contract) refund address
                address(0x0), // future param, unused for this example
                abi.encodePacked(uint16(1), LZ_GAS_USAGE_LIMIT), // v1 adapterParams, specify custom destination gas qty
                address(this).balance
            );
            emit AnswerToRemote(_srcChainId, totalReflected);
        }
    }

    /**
     * @notice receive response to a request made to the lowest gas chain
     * @param _payload contains (uint16 packetType, uint256 remoteReflectionState)
     */
    function _receiveRemoteReflectionState(bytes memory _payload) internal {
        (, /* packet type */ uint remoteReflectionState) = abi.decode(
            _payload,
            (uint16, uint)
        );

        // if remote that is less recent than local state, we just ignore instead
        // of throwing so L0 does not have to store failed message
        if (remoteReflectionState > totalReflected) {
            // integrate remote changes if they are more recent than local state (=smaller value)
            uint reflectionStateDiff = remoteReflectionState - totalReflected;
            if (reflectionStateDiff != 0) {
                totalReflected = remoteReflectionState;
                emit XReflect(reflectionStateDiff, remoteReflectionState);
            }
        }
    }
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.19;

// import "hardhat/console.sol";

struct ListElement {
    uint data;
    bytes32 pointer;
}

struct SingleLinkedList {
    uint length;
    ListElement head;
    mapping(bytes32 => ListElement) elements;
}

library SingleLinkedListLib {

    error CannotReplaceHead();

    bytes32 constant ZERO_POINTER = keccak256(abi.encode(0));

    function addNode(SingleLinkedList storage self, uint data, uint position) internal {

        if(position == 0 && self.length != 0) revert CannotReplaceHead();
        
        ListElement memory element = ListElement({data: data, pointer: ZERO_POINTER});
        bytes32 elementHash = keccak256(abi.encode(data));

        if(self.length == 0)
        {
            self.head = element;
            self.elements[elementHash] = element;
        }
        else if(position >= self.length)
        {
            // find tail = element with a zero pointer
            ListElement storage toCheck = self.head;
            while(toCheck.pointer != ZERO_POINTER)
            {
                toCheck = self.elements[toCheck.pointer];
            }
            toCheck.pointer = elementHash; /* pointer to new element */
            self.elements[elementHash] = element;
        }
        else
        {
            ListElement storage toCheck = self.head;
            uint iterator;
            while(iterator < position)
            {
                toCheck = self.elements[toCheck.pointer];
                unchecked { iterator = iterator + 1; }
            }
            // after loop executed, iterator is position
            // toCheck is predecessor
            bytes32 oldPointer = toCheck.pointer;
            toCheck.pointer = elementHash;
            element.pointer = oldPointer;
            self.elements[elementHash] = element;
        }
        self.length = self.length + 1;
    }

    function removeNode(SingleLinkedList storage self, uint data) internal {
        // TODO
    }

    function getBeheadedList(SingleLinkedList storage self) internal view returns(uint[] memory) {
        uint toReturnLen = self.length-1;
        uint[] memory beheadedList = new uint[](self.length-1);
        ListElement memory e = self.head;
        for(uint iterator; iterator < toReturnLen;)
        {   
            e = self.elements[e.pointer];
            beheadedList[iterator] = e.data;
            unchecked { iterator = iterator + 1; }
        }
        return beheadedList;
    }

}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"name":"FarmFacet__AlreadyUnlocked","type":"error"},{"inputs":[],"name":"FarmFacet__AlreadyVested","type":"error"},{"inputs":[],"name":"FarmFacet__InvalidDuration","type":"error"},{"inputs":[],"name":"FarmFacet__MinLockDuration","type":"error"},{"inputs":[],"name":"FarmFacet__NotEnoughRewards","type":"error"},{"inputs":[],"name":"FarmFacet__NotLocker","type":"error"},{"inputs":[],"name":"FarmFacet__NotTransferable","type":"error"},{"inputs":[],"name":"FarmFacet__NotVester","type":"error"},{"inputs":[{"internalType":"uint256","name":"_timeLeft","type":"uint256"}],"name":"FarmFacet__StillLocked","type":"error"},{"inputs":[],"name":"Ownable__NotOwner","type":"error"},{"inputs":[],"name":"Ownable__NotTransitiveOwner","type":"error"},{"inputs":[],"name":"Pausable__NotPaused","type":"error"},{"inputs":[],"name":"Pausable__Paused","type":"error"},{"inputs":[],"name":"ReentrancyGuard__ReentrantCall","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"addressToLockingIndexList","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"addressToVestIndexList","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"calculateRewardsEarned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_vestIndex","type":"uint256"}],"name":"claim","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"earned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getLockDuration","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"getUserLockList","outputs":[{"components":[{"internalType":"uint256","name":"startTimestamp","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"receiptAmount","type":"uint256"},{"internalType":"uint256","name":"duration","type":"uint256"},{"internalType":"uint256","name":"unlocked","type":"uint256"},{"internalType":"address","name":"locker","type":"address"}],"internalType":"struct LibFarmStorage.Lock[]","name":"_lockList","type":"tuple[]"},{"internalType":"uint256[]","name":"lockingIndexList","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"getUserVestList","outputs":[{"components":[{"internalType":"uint256","name":"startTimestamp","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"vested","type":"uint256"},{"internalType":"address","name":"vester","type":"address"}],"internalType":"struct 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LibFarmStorage.Lock","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"status","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"minLockDuration","type":"uint256"},{"internalType":"uint256","name":"maxLockDuration","type":"uint256"},{"internalType":"uint256","name":"earlyVestPenalty","type":"uint256"},{"internalType":"uint256","name":"penaltyToStaker","type":"uint256"}],"name":"setLockDurations","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_paused","type":"bool"}],"name":"setPauseStatus","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_stakingToken","type":"address"},{"internalType":"address","name":"_rewardToken","type":"address"}],"name":"setTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_treasury","type":"address"},{"internalType":"address","name":"_router","type":"address"}],"name":"setTreasury","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"vestDuration","type":"uint256"}],"name":"setVestDuration","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stakingToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"_lockingIndex","type":"uint256"}],"name":"unlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"vest","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_vestIndex","type":"uint256"}],"name":"vestIndexToVest","outputs":[{"components":[{"internalType":"uint256","name":"startTimestamp","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"vested","type":"uint256"},{"internalType":"address","name":"vester","type":"address"}],"internalType":"struct LibFarmStorage.Vest","name":"","type":"tuple"}],"stateMutability":"view","type":"function"}]

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