Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
import './libraries/StakingPoolLogicV2.sol';
import './interface/IStakingPoolV2.sol';
import './token/StakedElyfiToken.sol';
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/access/Ownable.sol';

/// @title Elyfi StakingPool contract
/// @notice Users can stake their asset and earn reward for their staking.
/// The reward calculation is based on the reward index and user balance. The amount of reward index change
/// is inversely proportional to the total amount of supply. Accrued rewards can be obtained by multiplying
/// the difference between the user index and the current index by the user balance. User index and the pool
/// index is updated and aligned with in the staking and withdrawing action.
/// @author Elysia
contract StakingPoolV2 is IStakingPoolV2, StakedElyfiToken, Ownable {
  using StakingPoolLogicV2 for PoolData;

  constructor(IERC20 stakingAsset_, IERC20 rewardAsset_) StakedElyfiToken(stakingAsset_) {
    stakingAsset = stakingAsset_;
    rewardAsset = rewardAsset_;
  }

  struct PoolData {
    uint256 duration;
    uint256 rewardPerSecond;
    uint256 rewardIndex;
    uint256 startTimestamp;
    uint256 endTimestamp;
    uint256 totalPrincipal;
    uint256 lastUpdateTimestamp;
    mapping(address => uint256) userIndex;
    mapping(address => uint256) userReward;
    mapping(address => uint256) userPrincipal;
    bool isOpened;
    bool isFinished;
  } 

  bool internal emergencyStop = false;
  mapping(address => bool) managers;
  IERC20 public stakingAsset;
  IERC20 public rewardAsset;
  PoolData internal _poolData;

  /***************** View functions ******************/

  /// @notice Returns reward index of the round
  function getRewardIndex() external view override returns (uint256) {
    return _poolData.getRewardIndex();
  }

  /// @notice Returns user accrued reward index of the round
  /// @param user The user address
  function getUserReward(address user) external view override returns (uint256) {
    return _poolData.getUserReward(user);
  }

  /// @notice Returns the state and data of the round
  /// @return rewardPerSecond The total reward accrued per second in the round
  /// @return rewardIndex The reward index of the round
  /// @return startTimestamp The start timestamp of the round
  /// @return endTimestamp The end timestamp of the round
  /// @return totalPrincipal The total staked amount of the round
  /// @return lastUpdateTimestamp The last update timestamp of the round
  function getPoolData()
    external
    view
    override
    returns (
      uint256 rewardPerSecond,
      uint256 rewardIndex,
      uint256 startTimestamp,
      uint256 endTimestamp,
      uint256 totalPrincipal,
      uint256 lastUpdateTimestamp
    )
  {
    return (
      _poolData.rewardPerSecond,
      _poolData.rewardIndex,
      _poolData.startTimestamp,
      _poolData.endTimestamp,
      _poolData.totalPrincipal,
      _poolData.lastUpdateTimestamp
    );
  }

  /// @notice Returns the state and data of the user
  /// @param user The user address
  function getUserData(address user)
    external
    view
    override
    returns (
      uint256 userIndex,
      uint256 userReward,
      uint256 userPrincipal
    )
  {
    return (_poolData.userIndex[user], _poolData.userReward[user], _poolData.userPrincipal[user]);
  }

  /***************** External functions ******************/

  /// @notice Stake the amount of staking asset to pool contract and update data.
  /// @param amount Amount to stake.
  function stake(uint256 amount) external override stakingInitiated {
    if (_poolData.isOpened == false) revert Closed();
    if (amount == 0) revert InvalidAmount();
    _poolData.updateStakingPool(msg.sender);
    _depositFor(msg.sender, amount);

    _poolData.userPrincipal[msg.sender] += amount;
    _poolData.totalPrincipal += amount;

    emit Stake(
      msg.sender,
      amount,
      _poolData.userIndex[msg.sender],
      _poolData.userPrincipal[msg.sender]
    );
  }

  /// @notice Withdraw the amount of principal from the pool contract and update data
  /// @param amount Amount to withdraw
  function withdraw(uint256 amount) external override stakingInitiated {
    _withdraw(amount);
  }

  /// @notice Transfer accrued reward to msg.sender. User accrued reward will be reset and user reward index will be set to the current reward index.
  function claim() external override stakingInitiated {
    _claim(msg.sender);
  }

  // TODO Implement `migrate` function to send an asset to the next staking contract
  
  /***************** Internal Functions ******************/

  function _withdraw(uint256 amount) internal {
    uint256 amountToWithdraw = amount;

    if (amount == type(uint256).max) {
      amountToWithdraw = _poolData.userPrincipal[msg.sender];
    }
    
    if (_poolData.userPrincipal[msg.sender] < amountToWithdraw)
      revert NotEnoughPrincipal(_poolData.userPrincipal[msg.sender]);

    _poolData.updateStakingPool(msg.sender);

    _poolData.userPrincipal[msg.sender] -= amountToWithdraw;
    _poolData.totalPrincipal -= amountToWithdraw;

    _withdrawTo(msg.sender, amountToWithdraw);

    emit Withdraw(
      msg.sender,
      amountToWithdraw,
      _poolData.userIndex[msg.sender],
      _poolData.userPrincipal[msg.sender]
    );
  }

  function _claim(address user) internal {
    if(emergencyStop == true) revert Emergency();
    uint256 reward = _poolData.getUserReward(user);

    if (reward == 0) revert ZeroReward();

    _poolData.userReward[user] = 0;
    _poolData.userIndex[user] = _poolData.getRewardIndex();

    SafeERC20.safeTransfer(rewardAsset, user, reward);

    uint256 rewardLeft = rewardAsset.balanceOf(address(this));
    if (rewardAsset == stakingAsset) {
      rewardLeft -= _poolData.totalPrincipal;
    }

    emit Claim(user, reward, rewardLeft);
  }

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

  /// @notice Init the new round. After the round closed, staking is not allowed.
  /// @param rewardPerSecond The total accrued reward per second in new round
  /// @param startTimestamp The start timestamp of initiated round
  /// @param duration The duration of the initiated round
  function initNewPool(
    uint256 rewardPerSecond,
    uint256 startTimestamp,
    uint256 duration
  ) external override onlyOwner {
    if (_poolData.isFinished == true) revert Finished();
    (uint256 newRoundStartTimestamp, uint256 newRoundEndTimestamp) = _poolData.initRound(
      rewardPerSecond,
      startTimestamp,
      duration
    );
    
    _poolData.isOpened = true;

    emit InitPool(rewardPerSecond, newRoundStartTimestamp, newRoundEndTimestamp);
  }

  function extendPool(
    uint256 rewardPerSecond,
    uint256 duration
  ) external onlyManager {
    _poolData.extendPool(duration);
    _poolData.rewardPerSecond = rewardPerSecond;

    emit ExtendPool(msg.sender, duration, rewardPerSecond);
  }
  
  function closePool() external onlyOwner {
    if (_poolData.isOpened == false) revert Closed();
    _poolData.endTimestamp = block.timestamp;
    _poolData.isOpened = false;
    _poolData.isFinished = true;
    emit ClosePool(msg.sender, true);
  }

  function retrieveResidue() external onlyOwner {
    uint256 residueAmount;

    if (stakingAsset == rewardAsset) {
      residueAmount = rewardAsset.balanceOf(address(this)) - _poolData.totalPrincipal;
    } else {
      residueAmount = rewardAsset.balanceOf(address(this));
    }

    SafeERC20.safeTransfer(rewardAsset, msg.sender, residueAmount);
    emit RetrieveResidue(msg.sender, residueAmount);
  }

  function setManager(address addr) external onlyOwner {
    _setManager(addr);
  }

  function revokeManager(address addr) external onlyOwner {
    _revokeManager(addr);
  }

  function renounceManager(address addr) external {
    require(addr == msg.sender, "Can only renounce manager for self");
    _revokeManager(addr);
  }

  function setEmergency(bool stop) external onlyOwner {
    emergencyStop = stop;
    emit SetEmergency(msg.sender, stop);
  } 

  function isManager(address addr) public view returns (bool) {
    return managers[addr] || addr == owner();
  }

  /***************** private ******************/
  function _setManager(address addr) private {
    if (!isManager(addr)) {
      managers[addr] = true;
      emit SetManager(msg.sender, addr);
    }
  }

  function _revokeManager(address addr) private {
    if (isManager(addr)) {
      managers[addr] = false;
      emit RevokeManager(msg.sender, addr);
    }
  }

  /***************** Modifier ******************/
  modifier onlyManager() {
    if (!isManager(msg.sender)) revert OnlyManager();
    _;
  }

  modifier stakingInitiated() {
    if (_poolData.startTimestamp == 0) revert StakingNotInitiated();
    _;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
import '../StakingPoolV2.sol';
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';

library StakingPoolLogicV2 {
  using StakingPoolLogicV2 for StakingPoolV2.PoolData;

  event UpdateStakingPool(
    address indexed user,
    uint256 newRewardIndex,
    uint256 totalPrincipal
  );

  function getRewardIndex(StakingPoolV2.PoolData storage poolData) internal view returns (uint256) {
    uint256 currentTimestamp = block.timestamp < poolData.endTimestamp
      ? block.timestamp
      : poolData.endTimestamp;
    uint256 timeDiff = currentTimestamp - poolData.lastUpdateTimestamp;
    uint256 totalPrincipal = poolData.totalPrincipal;

    if (timeDiff == 0) {
      return poolData.rewardIndex;
    }

    if (totalPrincipal == 0) {
      return poolData.rewardIndex;
    }

    uint256 rewardIndexDiff = (timeDiff * poolData.rewardPerSecond * 1e9) / totalPrincipal;
    return poolData.rewardIndex + rewardIndexDiff;
  }

  function getUserReward(StakingPoolV2.PoolData storage poolData, address user)
    internal
    view
    returns (uint256)
  {
    if (poolData.userIndex[user] == 0) {
      return 0;
    }
    uint256 indexDiff = getRewardIndex(poolData) - poolData.userIndex[user];
    uint256 balance = poolData.userPrincipal[user];
    uint256 result = poolData.userReward[user] + (balance * indexDiff) / 1e9;
    return result;
  }

  function updateStakingPool(
    StakingPoolV2.PoolData storage poolData,
    address user
  ) internal {
    poolData.userReward[user] = getUserReward(poolData, user);
    poolData.rewardIndex = poolData.userIndex[user] = getRewardIndex(poolData);
    poolData.lastUpdateTimestamp = block.timestamp < poolData.endTimestamp
      ? block.timestamp
      : poolData.endTimestamp;
    emit UpdateStakingPool(msg.sender, poolData.rewardIndex, poolData.totalPrincipal);
  }

  function extendPool(
    StakingPoolV2.PoolData storage poolData,
    uint256 duration
  ) internal {
    poolData.rewardIndex = getRewardIndex(poolData);
    poolData.startTimestamp = poolData.lastUpdateTimestamp = block.timestamp;
    poolData.endTimestamp = block.timestamp + duration;
  }

  function initRound(
    StakingPoolV2.PoolData storage poolData,
    uint256 rewardPerSecond,
    uint256 roundStartTimestamp,
    uint256 duration
  ) internal returns (uint256, uint256) {
    poolData.rewardPerSecond = rewardPerSecond;
    poolData.startTimestamp = roundStartTimestamp;
    poolData.endTimestamp = roundStartTimestamp + duration;
    poolData.lastUpdateTimestamp = roundStartTimestamp;
    poolData.rewardIndex = 1e18;

    return (poolData.startTimestamp, poolData.endTimestamp);
  }

}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;

interface IStakingPoolV2 {
  error StakingNotInitiated();
  error InvalidAmount();
  error ZeroReward();
  error OnlyManager();
  error NotEnoughPrincipal(uint256 principal);
  error ZeroPrincipal();
  error Finished();
  error Closed();
  error Emergency();

  event Stake(
    address indexed user,
    uint256 amount,
    uint256 userIndex,
    uint256 userPrincipal
  );

  event Withdraw(
    address indexed user,
    uint256 amount,
    uint256 userIndex,
    uint256 userPrincipal
  );

  event Claim(address indexed user, uint256 reward, uint256 rewardLeft);

  event InitPool(
    uint256 rewardPerSecond,
    uint256 startTimestamp,
    uint256 endTimestamp
  );

  event ExtendPool(
    address indexed manager,
    uint256 duration,
    uint256 rewardPerSecond
  );

  event ClosePool(address admin, bool close);

  event RetrieveResidue(address manager, uint256 residueAmount);

  event SetManager(address admin, address manager);

  /// @param requester owner or the manager himself/herself
  event RevokeManager(address requester, address manager);

  event SetEmergency(address admin, bool emergency);

  function stake(uint256 amount) external;

  function claim() external;

  function withdraw(uint256 amount) external;

  function getRewardIndex() external view returns (uint256);

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

  function getPoolData()
    external
    view
    returns (
      uint256 rewardPerSecond,
      uint256 rewardIndex,
      uint256 startTimestamp,
      uint256 endTimestamp,
      uint256 totalPrincipal,
      uint256 lastUpdateTimestamp
    );

  function getUserData(address user)
    external
    view
    returns (
      uint256 userIndex,
      uint256 userReward,
      uint256 userPrincipal
    );

  function initNewPool(
    uint256 rewardPerSecond,
    uint256 startTimestamp,
    uint256 duration
  ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;

import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
import '@openzeppelin/contracts/token/ERC20/ERC20.sol';
import '@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol';
import '@openzeppelin/contracts/token/ERC20/extensions/ERC20Votes.sol';
import '../libraries/ERC20Metadata.sol';

contract StakedElyfiToken is ERC20, ERC20Permit, ERC20Votes {
  IERC20 public immutable underlying;

  constructor(IERC20 underlyingToken)
    ERC20(
      string(
        abi.encodePacked(
          'Staked',
          ERC20Metadata.tokenName(address(underlyingToken))
        )
      ),
      string(
        abi.encodePacked(
          's',
          ERC20Metadata.tokenSymbol(address(underlyingToken))
        )
      )
    )
    ERC20Permit(
      string(
        abi.encodePacked(
          'Staked',
          ERC20Metadata.tokenName(address(underlyingToken))
        )
      )
    )
  {
    underlying = underlyingToken;
  }

  /// @notice Transfer not supported
  function transfer(address recipient, uint256 amount)
    public
    virtual
    override(ERC20)
    returns (bool)
  {
    recipient;
    amount;
    revert();
  }

  /// @notice Transfer not supported
  function transferFrom(
    address sender,
    address recipient,
    uint256 amount
  ) public virtual override(ERC20) returns (bool) {
    sender;
    recipient;
    amount;
    revert();
  }

  /// @notice Approval not supported
  function approve(address spender, uint256 amount) public virtual override(ERC20) returns (bool) {
    spender;
    amount;
    revert();
  }

  /// @notice Allownace not supported
  function allowance(address owner, address spender)
    public
    view
    virtual
    override(ERC20)
    returns (uint256)
  {
    owner;
    spender;
    revert();
  }

  /// @notice Allownace not supported
  function increaseAllowance(address spender, uint256 addedValue)
    public
    virtual
    override(ERC20)
    returns (bool)
  {
    spender;
    addedValue;
    revert();
  }

  /// @notice Allownace not supported
  function decreaseAllowance(address spender, uint256 subtractedValue)
    public
    virtual
    override(ERC20)
    returns (bool)
  {
    spender;
    subtractedValue;
    revert();
  }

  /// @dev Allow a user to deposit underlying tokens and mint the corresponding number of wrapped tokens.
  /// @notice This function is based on the openzeppelin ERC20Wrapper
  function _depositFor(address account, uint256 amount) internal virtual returns (bool) {
    SafeERC20.safeTransferFrom(underlying, _msgSender(), address(this), amount);
    _mint(account, amount);
    return true;
  }

  /// @dev Allow a user to burn a number of wrapped tokens and withdraw the corresponding number of underlying tokens.
  /// @notice This function is based on the openzeppelin ERC20Wrapper
  function _withdrawTo(address account, uint256 amount) internal virtual returns (bool) {
    _burn(_msgSender(), amount);
    SafeERC20.safeTransfer(underlying, account, amount);
    return true;
  }

  /// @notice The following functions are overrides required by Solidity.
  function _afterTokenTransfer(
    address from,
    address to,
    uint256 amount
  ) internal override(ERC20, ERC20Votes) {
    super._afterTokenTransfer(from, to, amount);
  }

  /// @notice The following functions are overrides required by Solidity.
  function _mint(address to, uint256 amount) internal override(ERC20, ERC20Votes) {
    super._mint(to, amount);
  }

  /// @notice The following functions are overrides required by Solidity.
  function _burn(address account, uint256 amount) internal override(ERC20, ERC20Votes) {
    super._burn(account, amount);
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.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 Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _setOwner(_msgSender());
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

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

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

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

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

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

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

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

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./draft-IERC20Permit.sol";
import "../ERC20.sol";
import "../../../utils/cryptography/draft-EIP712.sol";
import "../../../utils/cryptography/ECDSA.sol";
import "../../../utils/Counters.sol";

/**
 * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * _Available since v3.4._
 */
abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {
    using Counters for Counters.Counter;

    mapping(address => Counters.Counter) private _nonces;

    // solhint-disable-next-line var-name-mixedcase
    bytes32 private immutable _PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");

    /**
     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
     *
     * It's a good idea to use the same `name` that is defined as the ERC20 token name.
     */
    constructor(string memory name) EIP712(name, "1") {}

    /**
     * @dev See {IERC20Permit-permit}.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual override {
        require(block.timestamp <= deadline, "ERC20Permit: expired deadline");

        bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));

        bytes32 hash = _hashTypedDataV4(structHash);

        address signer = ECDSA.recover(hash, v, r, s);
        require(signer == owner, "ERC20Permit: invalid signature");

        _approve(owner, spender, value);
    }

    /**
     * @dev See {IERC20Permit-nonces}.
     */
    function nonces(address owner) public view virtual override returns (uint256) {
        return _nonces[owner].current();
    }

    /**
     * @dev See {IERC20Permit-DOMAIN_SEPARATOR}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view override returns (bytes32) {
        return _domainSeparatorV4();
    }

    /**
     * @dev "Consume a nonce": return the current value and increment.
     *
     * _Available since v4.1._
     */
    function _useNonce(address owner) internal virtual returns (uint256 current) {
        Counters.Counter storage nonce = _nonces[owner];
        current = nonce.current();
        nonce.increment();
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./draft-ERC20Permit.sol";
import "../../../utils/math/Math.sol";
import "../../../utils/math/SafeCast.sol";
import "../../../utils/cryptography/ECDSA.sol";

/**
 * @dev Extension of ERC20 to support Compound-like voting and delegation. This version is more generic than Compound's,
 * and supports token supply up to 2^224^ - 1, while COMP is limited to 2^96^ - 1.
 *
 * NOTE: If exact COMP compatibility is required, use the {ERC20VotesComp} variant of this module.
 *
 * This extension keeps a history (checkpoints) of each account's vote power. Vote power can be delegated either
 * by calling the {delegate} function directly, or by providing a signature to be used with {delegateBySig}. Voting
 * power can be queried through the public accessors {getVotes} and {getPastVotes}.
 *
 * By default, token balance does not account for voting power. This makes transfers cheaper. The downside is that it
 * requires users to delegate to themselves in order to activate checkpoints and have their voting power tracked.
 * Enabling self-delegation can easily be done by overriding the {delegates} function. Keep in mind however that this
 * will significantly increase the base gas cost of transfers.
 *
 * _Available since v4.2._
 */
abstract contract ERC20Votes is ERC20Permit {
    struct Checkpoint {
        uint32 fromBlock;
        uint224 votes;
    }

    bytes32 private constant _DELEGATION_TYPEHASH =
        keccak256("Delegation(address delegatee,uint256 nonce,uint256 expiry)");

    mapping(address => address) private _delegates;
    mapping(address => Checkpoint[]) private _checkpoints;
    Checkpoint[] private _totalSupplyCheckpoints;

    /**
     * @dev Emitted when an account changes their delegate.
     */
    event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);

    /**
     * @dev Emitted when a token transfer or delegate change results in changes to an account's voting power.
     */
    event DelegateVotesChanged(address indexed delegate, uint256 previousBalance, uint256 newBalance);

    /**
     * @dev Get the `pos`-th checkpoint for `account`.
     */
    function checkpoints(address account, uint32 pos) public view virtual returns (Checkpoint memory) {
        return _checkpoints[account][pos];
    }

    /**
     * @dev Get number of checkpoints for `account`.
     */
    function numCheckpoints(address account) public view virtual returns (uint32) {
        return SafeCast.toUint32(_checkpoints[account].length);
    }

    /**
     * @dev Get the address `account` is currently delegating to.
     */
    function delegates(address account) public view virtual returns (address) {
        return _delegates[account];
    }

    /**
     * @dev Gets the current votes balance for `account`
     */
    function getVotes(address account) public view returns (uint256) {
        uint256 pos = _checkpoints[account].length;
        return pos == 0 ? 0 : _checkpoints[account][pos - 1].votes;
    }

    /**
     * @dev Retrieve the number of votes for `account` at the end of `blockNumber`.
     *
     * Requirements:
     *
     * - `blockNumber` must have been already mined
     */
    function getPastVotes(address account, uint256 blockNumber) public view returns (uint256) {
        require(blockNumber < block.number, "ERC20Votes: block not yet mined");
        return _checkpointsLookup(_checkpoints[account], blockNumber);
    }

    /**
     * @dev Retrieve the `totalSupply` at the end of `blockNumber`. Note, this value is the sum of all balances.
     * It is but NOT the sum of all the delegated votes!
     *
     * Requirements:
     *
     * - `blockNumber` must have been already mined
     */
    function getPastTotalSupply(uint256 blockNumber) public view returns (uint256) {
        require(blockNumber < block.number, "ERC20Votes: block not yet mined");
        return _checkpointsLookup(_totalSupplyCheckpoints, blockNumber);
    }

    /**
     * @dev Lookup a value in a list of (sorted) checkpoints.
     */
    function _checkpointsLookup(Checkpoint[] storage ckpts, uint256 blockNumber) private view returns (uint256) {
        // We run a binary search to look for the earliest checkpoint taken after `blockNumber`.
        //
        // During the loop, the index of the wanted checkpoint remains in the range [low-1, high).
        // With each iteration, either `low` or `high` is moved towards the middle of the range to maintain the invariant.
        // - If the middle checkpoint is after `blockNumber`, we look in [low, mid)
        // - If the middle checkpoint is before or equal to `blockNumber`, we look in [mid+1, high)
        // Once we reach a single value (when low == high), we've found the right checkpoint at the index high-1, if not
        // out of bounds (in which case we're looking too far in the past and the result is 0).
        // Note that if the latest checkpoint available is exactly for `blockNumber`, we end up with an index that is
        // past the end of the array, so we technically don't find a checkpoint after `blockNumber`, but it works out
        // the same.
        uint256 high = ckpts.length;
        uint256 low = 0;
        while (low < high) {
            uint256 mid = Math.average(low, high);
            if (ckpts[mid].fromBlock > blockNumber) {
                high = mid;
            } else {
                low = mid + 1;
            }
        }

        return high == 0 ? 0 : ckpts[high - 1].votes;
    }

    /**
     * @dev Delegate votes from the sender to `delegatee`.
     */
    function delegate(address delegatee) public virtual {
        return _delegate(_msgSender(), delegatee);
    }

    /**
     * @dev Delegates votes from signer to `delegatee`
     */
    function delegateBySig(
        address delegatee,
        uint256 nonce,
        uint256 expiry,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        require(block.timestamp <= expiry, "ERC20Votes: signature expired");
        address signer = ECDSA.recover(
            _hashTypedDataV4(keccak256(abi.encode(_DELEGATION_TYPEHASH, delegatee, nonce, expiry))),
            v,
            r,
            s
        );
        require(nonce == _useNonce(signer), "ERC20Votes: invalid nonce");
        return _delegate(signer, delegatee);
    }

    /**
     * @dev Maximum token supply. Defaults to `type(uint224).max` (2^224^ - 1).
     */
    function _maxSupply() internal view virtual returns (uint224) {
        return type(uint224).max;
    }

    /**
     * @dev Snapshots the totalSupply after it has been increased.
     */
    function _mint(address account, uint256 amount) internal virtual override {
        super._mint(account, amount);
        require(totalSupply() <= _maxSupply(), "ERC20Votes: total supply risks overflowing votes");

        _writeCheckpoint(_totalSupplyCheckpoints, _add, amount);
    }

    /**
     * @dev Snapshots the totalSupply after it has been decreased.
     */
    function _burn(address account, uint256 amount) internal virtual override {
        super._burn(account, amount);

        _writeCheckpoint(_totalSupplyCheckpoints, _subtract, amount);
    }

    /**
     * @dev Move voting power when tokens are transferred.
     *
     * Emits a {DelegateVotesChanged} event.
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual override {
        super._afterTokenTransfer(from, to, amount);

        _moveVotingPower(delegates(from), delegates(to), amount);
    }

    /**
     * @dev Change delegation for `delegator` to `delegatee`.
     *
     * Emits events {DelegateChanged} and {DelegateVotesChanged}.
     */
    function _delegate(address delegator, address delegatee) internal virtual {
        address currentDelegate = delegates(delegator);
        uint256 delegatorBalance = balanceOf(delegator);
        _delegates[delegator] = delegatee;

        emit DelegateChanged(delegator, currentDelegate, delegatee);

        _moveVotingPower(currentDelegate, delegatee, delegatorBalance);
    }

    function _moveVotingPower(
        address src,
        address dst,
        uint256 amount
    ) private {
        if (src != dst && amount > 0) {
            if (src != address(0)) {
                (uint256 oldWeight, uint256 newWeight) = _writeCheckpoint(_checkpoints[src], _subtract, amount);
                emit DelegateVotesChanged(src, oldWeight, newWeight);
            }

            if (dst != address(0)) {
                (uint256 oldWeight, uint256 newWeight) = _writeCheckpoint(_checkpoints[dst], _add, amount);
                emit DelegateVotesChanged(dst, oldWeight, newWeight);
            }
        }
    }

    function _writeCheckpoint(
        Checkpoint[] storage ckpts,
        function(uint256, uint256) view returns (uint256) op,
        uint256 delta
    ) private returns (uint256 oldWeight, uint256 newWeight) {
        uint256 pos = ckpts.length;
        oldWeight = pos == 0 ? 0 : ckpts[pos - 1].votes;
        newWeight = op(oldWeight, delta);

        if (pos > 0 && ckpts[pos - 1].fromBlock == block.number) {
            ckpts[pos - 1].votes = SafeCast.toUint224(newWeight);
        } else {
            ckpts.push(Checkpoint({fromBlock: SafeCast.toUint32(block.number), votes: SafeCast.toUint224(newWeight)}));
        }
    }

    function _add(uint256 a, uint256 b) private pure returns (uint256) {
        return a + b;
    }

    function _subtract(uint256 a, uint256 b) private pure returns (uint256) {
        return a - b;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

import '@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol';
import '@openzeppelin/contracts/utils/Strings.sol';

library ERC20Metadata {
  function bytes32ToString(bytes32 x) private pure returns (string memory) {
    bytes memory bytesString = new bytes(32);
    uint256 charCount = 0;
    for (uint256 j = 0; j < 32; j++) {
      bytes1 char = x[j];
      if (char != 0) {
        bytesString[charCount] = char;
        charCount++;
      }
    }
    bytes memory bytesStringTrimmed = new bytes(charCount);
    for (uint256 j = 0; j < charCount; j++) {
      bytesStringTrimmed[j] = bytesString[j];
    }
    return string(bytesStringTrimmed);
  }

  // calls an external view token contract method that returns a symbol or name, and parses the output into a string
  function callAndParseStringReturn(address token, bytes4 selector)
    private
    view
    returns (string memory)
  {
    (bool success, bytes memory data) = token.staticcall(abi.encodeWithSelector(selector));
    // if not implemented, or returns empty data, return empty string
    if (!success || data.length == 0) {
      return '';
    }
    // bytes32 data always has length 32
    if (data.length == 32) {
      bytes32 decoded = abi.decode(data, (bytes32));
      return bytes32ToString(decoded);
    } else if (data.length > 64) {
      return abi.decode(data, (string));
    }
    return '';
  }

  // attempts to extract the token symbol. if it does not implement symbol, returns a symbol derived from the address
  function tokenSymbol(address token) external view returns (string memory) {
    string memory symbol = callAndParseStringReturn(token, IERC20Metadata.symbol.selector);
    if (bytes(symbol).length == 0) {
      // fallback to 6 uppercase hex of address
      return Strings.toHexString(uint256(keccak256(abi.encode(token))), 32);
    }
    return symbol;
  }

  // attempts to extract the token name. if it does not implement name, returns a name derived from the address
  function tokenName(address token) external view returns (string memory) {
    string memory name = callAndParseStringReturn(token, IERC20Metadata.name.selector);
    if (bytes(name).length == 0) {
      // fallback to full hex of address
      return Strings.toHexString(uint256(keccak256(abi.encode(token))), 32);
    }
    return name;
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 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://diligence.consensys.net/posts/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/v0.5.11/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 functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

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

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./ECDSA.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;

    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256(
            "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
        );
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    function _buildDomainSeparator(
        bytes32 typeHash,
        bytes32 nameHash,
        bytes32 versionHash
    ) private view returns (bytes32) {
        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                vs := mload(add(signature, 0x40))
            }
            return tryRecover(hash, r, vs);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s;
        uint8 v;
        assembly {
            s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
            v := add(shr(255, vs), 27)
        }
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }
        if (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library Counters {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }

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

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

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
 * checks.
 *
 * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
 * easily result in undesired exploitation or bugs, since developers usually
 * assume that overflows raise errors. `SafeCast` restores this intuition by
 * reverting the transaction when such an operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 *
 * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
 * all math on `uint256` and `int256` and then downcasting.
 */
library SafeCast {
    /**
     * @dev Returns the downcasted uint224 from uint256, reverting on
     * overflow (when the input is greater than largest uint224).
     *
     * Counterpart to Solidity's `uint224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     */
    function toUint224(uint256 value) internal pure returns (uint224) {
        require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits");
        return uint224(value);
    }

    /**
     * @dev Returns the downcasted uint128 from uint256, reverting on
     * overflow (when the input is greater than largest uint128).
     *
     * Counterpart to Solidity's `uint128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     */
    function toUint128(uint256 value) internal pure returns (uint128) {
        require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits");
        return uint128(value);
    }

    /**
     * @dev Returns the downcasted uint96 from uint256, reverting on
     * overflow (when the input is greater than largest uint96).
     *
     * Counterpart to Solidity's `uint96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     */
    function toUint96(uint256 value) internal pure returns (uint96) {
        require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits");
        return uint96(value);
    }

    /**
     * @dev Returns the downcasted uint64 from uint256, reverting on
     * overflow (when the input is greater than largest uint64).
     *
     * Counterpart to Solidity's `uint64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     */
    function toUint64(uint256 value) internal pure returns (uint64) {
        require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits");
        return uint64(value);
    }

    /**
     * @dev Returns the downcasted uint32 from uint256, reverting on
     * overflow (when the input is greater than largest uint32).
     *
     * Counterpart to Solidity's `uint32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     */
    function toUint32(uint256 value) internal pure returns (uint32) {
        require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits");
        return uint32(value);
    }

    /**
     * @dev Returns the downcasted uint16 from uint256, reverting on
     * overflow (when the input is greater than largest uint16).
     *
     * Counterpart to Solidity's `uint16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     */
    function toUint16(uint256 value) internal pure returns (uint16) {
        require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits");
        return uint16(value);
    }

    /**
     * @dev Returns the downcasted uint8 from uint256, reverting on
     * overflow (when the input is greater than largest uint8).
     *
     * Counterpart to Solidity's `uint8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits.
     */
    function toUint8(uint256 value) internal pure returns (uint8) {
        require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits");
        return uint8(value);
    }

    /**
     * @dev Converts a signed int256 into an unsigned uint256.
     *
     * Requirements:
     *
     * - input must be greater than or equal to 0.
     */
    function toUint256(int256 value) internal pure returns (uint256) {
        require(value >= 0, "SafeCast: value must be positive");
        return uint256(value);
    }

    /**
     * @dev Returns the downcasted int128 from int256, reverting on
     * overflow (when the input is less than smallest int128 or
     * greater than largest int128).
     *
     * Counterpart to Solidity's `int128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v3.1._
     */
    function toInt128(int256 value) internal pure returns (int128) {
        require(value >= type(int128).min && value <= type(int128).max, "SafeCast: value doesn't fit in 128 bits");
        return int128(value);
    }

    /**
     * @dev Returns the downcasted int64 from int256, reverting on
     * overflow (when the input is less than smallest int64 or
     * greater than largest int64).
     *
     * Counterpart to Solidity's `int64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v3.1._
     */
    function toInt64(int256 value) internal pure returns (int64) {
        require(value >= type(int64).min && value <= type(int64).max, "SafeCast: value doesn't fit in 64 bits");
        return int64(value);
    }

    /**
     * @dev Returns the downcasted int32 from int256, reverting on
     * overflow (when the input is less than smallest int32 or
     * greater than largest int32).
     *
     * Counterpart to Solidity's `int32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v3.1._
     */
    function toInt32(int256 value) internal pure returns (int32) {
        require(value >= type(int32).min && value <= type(int32).max, "SafeCast: value doesn't fit in 32 bits");
        return int32(value);
    }

    /**
     * @dev Returns the downcasted int16 from int256, reverting on
     * overflow (when the input is less than smallest int16 or
     * greater than largest int16).
     *
     * Counterpart to Solidity's `int16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v3.1._
     */
    function toInt16(int256 value) internal pure returns (int16) {
        require(value >= type(int16).min && value <= type(int16).max, "SafeCast: value doesn't fit in 16 bits");
        return int16(value);
    }

    /**
     * @dev Returns the downcasted int8 from int256, reverting on
     * overflow (when the input is less than smallest int8 or
     * greater than largest int8).
     *
     * Counterpart to Solidity's `int8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits.
     *
     * _Available since v3.1._
     */
    function toInt8(int256 value) internal pure returns (int8) {
        require(value >= type(int8).min && value <= type(int8).max, "SafeCast: value doesn't fit in 8 bits");
        return int8(value);
    }

    /**
     * @dev Converts an unsigned uint256 into a signed int256.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxInt256.
     */
    function toInt256(uint256 value) internal pure returns (int256) {
        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
        require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256");
        return int256(value);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        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);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

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

{
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {
    "contracts/libraries/ERC20Metadata.sol": {
      "ERC20Metadata": "0xC10B6DAFE4D7F7c693F44C51E716166B599644Ba"
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract IERC20","name":"stakingAsset_","type":"address"},{"internalType":"contract IERC20","name":"rewardAsset_","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"Closed","type":"error"},{"inputs":[],"name":"Emergency","type":"error"},{"inputs":[],"name":"Finished","type":"error"},{"inputs":[],"name":"InvalidAmount","type":"error"},{"inputs":[{"internalType":"uint256","name":"principal","type":"uint256"}],"name":"NotEnoughPrincipal","type":"error"},{"inputs":[],"name":"OnlyManager","type":"error"},{"inputs":[],"name":"StakingNotInitiated","type":"error"},{"inputs":[],"name":"ZeroPrincipal","type":"error"},{"inputs":[],"name":"ZeroReward","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":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardLeft","type":"uint256"}],"name":"Claim","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"admin","type":"address"},{"indexed":false,"internalType":"bool","name":"close","type":"bool"}],"name":"ClosePool","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"delegator","type":"address"},{"indexed":true,"internalType":"address","name":"fromDelegate","type":"address"},{"indexed":true,"internalType":"address","name":"toDelegate","type":"address"}],"name":"DelegateChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"delegate","type":"address"},{"indexed":false,"internalType":"uint256","name":"previousBalance","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newBalance","type":"uint256"}],"name":"DelegateVotesChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"manager","type":"address"},{"indexed":false,"internalType":"uint256","name":"duration","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardPerSecond","type":"uint256"}],"name":"ExtendPool","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"rewardPerSecond","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"startTimestamp","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"endTimestamp","type":"uint256"}],"name":"InitPool","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":"manager","type":"address"},{"indexed":false,"internalType":"uint256","name":"residueAmount","type":"uint256"}],"name":"RetrieveResidue","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"requester","type":"address"},{"indexed":false,"internalType":"address","name":"manager","type":"address"}],"name":"RevokeManager","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"admin","type":"address"},{"indexed":false,"internalType":"bool","name":"emergency","type":"bool"}],"name":"SetEmergency","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"admin","type":"address"},{"indexed":false,"internalType":"address","name":"manager","type":"address"}],"name":"SetManager","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"userIndex","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"userPrincipal","type":"uint256"}],"name":"Stake","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":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"userIndex","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"userPrincipal","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"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":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","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"},{"internalType":"uint32","name":"pos","type":"uint32"}],"name":"checkpoints","outputs":[{"components":[{"internalType":"uint32","name":"fromBlock","type":"uint32"},{"internalType":"uint224","name":"votes","type":"uint224"}],"internalType":"struct ERC20Votes.Checkpoint","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"closePool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"delegatee","type":"address"}],"name":"delegate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"delegatee","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"delegateBySig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"delegates","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"rewardPerSecond","type":"uint256"},{"internalType":"uint256","name":"duration","type":"uint256"}],"name":"extendPool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"blockNumber","type":"uint256"}],"name":"getPastTotalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"blockNumber","type":"uint256"}],"name":"getPastVotes","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getPoolData","outputs":[{"internalType":"uint256","name":"rewardPerSecond","type":"uint256"},{"internalType":"uint256","name":"rewardIndex","type":"uint256"},{"internalType":"uint256","name":"startTimestamp","type":"uint256"},{"internalType":"uint256","name":"endTimestamp","type":"uint256"},{"internalType":"uint256","name":"totalPrincipal","type":"uint256"},{"internalType":"uint256","name":"lastUpdateTimestamp","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRewardIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getUserData","outputs":[{"internalType":"uint256","name":"userIndex","type":"uint256"},{"internalType":"uint256","name":"userReward","type":"uint256"},{"internalType":"uint256","name":"userPrincipal","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getUserReward","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"getVotes","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"rewardPerSecond","type":"uint256"},{"internalType":"uint256","name":"startTimestamp","type":"uint256"},{"internalType":"uint256","name":"duration","type":"uint256"}],"name":"initNewPool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"isManager","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"numCheckpoints","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"renounceManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"retrieveResidue","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"revokeManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardAsset","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bool","name":"stop","type":"bool"}],"name":"setEmergency","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"setManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stakingAsset","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"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":"nonpayable","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":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"underlying","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

0000000000000000000000004da34f8264cb33a5c9f17081b9ef5ff6091116f40000000000000000000000004da34f8264cb33a5c9f17081b9ef5ff6091116f4

-----Decoded View---------------
Arg [0] : stakingAsset_ (address): 0x4dA34f8264CB33A5c9F17081B9EF5Ff6091116f4
Arg [1] : rewardAsset_ (address): 0x4dA34f8264CB33A5c9F17081B9EF5Ff6091116f4

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000004da34f8264cb33a5c9f17081b9ef5ff6091116f4
Arg [1] : 0000000000000000000000004da34f8264cb33a5c9f17081b9ef5ff6091116f4