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// SPDX-License-Identifier: MIT

pragma solidity =0.8.20;

import { AccessControlUpgradeable } from "@openzeppelin/contracts-upgradeable-v4/access/AccessControlUpgradeable.sol";
import { ERC20PermitUpgradeable } from "@openzeppelin/contracts-upgradeable-v4/token/ERC20/extensions/ERC20PermitUpgradeable.sol";
import { SafeERC20Upgradeable } from "@openzeppelin/contracts-upgradeable-v4/token/ERC20/utils/SafeERC20Upgradeable.sol";
import { IERC20Upgradeable } from "@openzeppelin/contracts-upgradeable-v4/token/ERC20/IERC20Upgradeable.sol";
import { EnumerableSetUpgradeable } from "@openzeppelin/contracts-upgradeable-v4/utils/structs/EnumerableSetUpgradeable.sol";

import { IFxFractionalTokenV2 } from "../../interfaces/f(x)/IFxFractionalTokenV2.sol";
import { IFxMarketV2 } from "../../interfaces/f(x)/IFxMarketV2.sol";
import { IFxTreasuryV2 } from "../../interfaces/f(x)/IFxTreasuryV2.sol";
import { IFxUSD } from "../../interfaces/f(x)/IFxUSD.sol";
import { IFxShareableRebalancePool } from "../../interfaces/f(x)/IFxShareableRebalancePool.sol";

contract FxUSD is AccessControlUpgradeable, ERC20PermitUpgradeable, IFxUSD {
  using SafeERC20Upgradeable for IERC20Upgradeable;
  using EnumerableSetUpgradeable for EnumerableSetUpgradeable.AddressSet;

  /*************
   * Constants *
   *************/

  /// @dev The precision used to compute nav.
  uint256 private constant PRECISION = 1e18;

  /***********
   * Structs *
   ***********/

  /// @param fToken The address of Fractional Token.
  /// @param treasury The address of treasury contract.
  /// @param market The address of market contract.
  /// @param mintCap The maximum amount of fToken can be minted.
  /// @param managed The amount of fToken managed in this contract.
  struct FxMarketStruct {
    address fToken;
    address treasury;
    address market;
    uint256 mintCap;
    uint256 managed;
  }

  /*************
   * Variables *
   *************/

  /// @notice Mapping from base token address to metadata.
  mapping(address => FxMarketStruct) public markets;

  /// @dev The list of supported base tokens.
  EnumerableSetUpgradeable.AddressSet private supportedTokens;

  /// @dev The list of supported rebalance pools.
  EnumerableSetUpgradeable.AddressSet private supportedPools;

  /*************
   * Modifiers *
   *************/

  modifier onlySupportedMarket(address _baseToken) {
    _checkBaseToken(_baseToken);
    _;
  }

  modifier onlySupportedPool(address _pool) {
    if (!supportedPools.contains(_pool)) revert ErrorUnsupportedRebalancePool();
    _;
  }

  modifier onlyMintableMarket(address _baseToken, bool isMint) {
    _checkMarketMintable(_baseToken, isMint);
    _;
  }

  /***************
   * Constructor *
   ***************/

  function initialize(string memory _name, string memory _symbol) external initializer {
    __Context_init();
    __ERC165_init();
    __AccessControl_init();
    __ERC20_init(_name, _symbol);
    __ERC20Permit_init(_name);

    _grantRole(DEFAULT_ADMIN_ROLE, _msgSender());
  }

  /*************************
   * Public View Functions *
   *************************/

  /// @inheritdoc IFxUSD
  function getMarkets() external view override returns (address[] memory _tokens) {
    uint256 _numMarkets = supportedTokens.length();
    _tokens = new address[](_numMarkets);
    for (uint256 i = 0; i < _numMarkets; ++i) {
      _tokens[i] = supportedTokens.at(i);
    }
  }

  /// @inheritdoc IFxUSD
  function getRebalancePools() external view override returns (address[] memory _pools) {
    uint256 _numPools = supportedPools.length();
    _pools = new address[](_numPools);
    for (uint256 i = 0; i < _numPools; ++i) {
      _pools[i] = supportedPools.at(i);
    }
  }

  /// @inheritdoc IFxUSD
  function nav() external view override returns (uint256 _nav) {
    uint256 _numMarkets = supportedTokens.length();
    uint256 _supply = totalSupply();
    if (_supply == 0) return PRECISION;

    for (uint256 i = 0; i < _numMarkets; i++) {
      address _baseToken = supportedTokens.at(i);
      address _fToken = markets[_baseToken].fToken;
      uint256 _fnav = IFxFractionalTokenV2(_fToken).nav();
      _nav += _fnav * markets[_baseToken].managed;
    }
    _nav /= _supply;
  }

  /// @inheritdoc IFxUSD
  function isUnderCollateral() public view override returns (bool) {
    uint256 _numMarkets = supportedTokens.length();
    for (uint256 i = 0; i < _numMarkets; i++) {
      address _baseToken = supportedTokens.at(i);
      address _treasury = markets[_baseToken].treasury;
      if (IFxTreasuryV2(_treasury).isUnderCollateral()) return true;
    }
    return false;
  }

  /****************************
   * Public Mutated Functions *
   ****************************/

  /// @inheritdoc IFxUSD
  function wrap(
    address _baseToken,
    uint256 _amount,
    address _receiver
  ) external override onlySupportedMarket(_baseToken) onlyMintableMarket(_baseToken, false) {
    if (isUnderCollateral()) revert ErrorUnderCollateral();

    address _fToken = markets[_baseToken].fToken;
    IERC20Upgradeable(_fToken).safeTransferFrom(_msgSender(), address(this), _amount);

    _mintShares(_baseToken, _receiver, _amount);

    emit Wrap(_baseToken, _msgSender(), _receiver, _amount);
  }

  /// @inheritdoc IFxUSD
  function wrapFrom(
    address _pool,
    uint256 _amount,
    address _receiver
  ) external override onlySupportedPool(_pool) {
    if (isUnderCollateral()) revert ErrorUnderCollateral();

    address _baseToken = IFxShareableRebalancePool(_pool).baseToken();
    _checkBaseToken(_baseToken);
    _checkMarketMintable(_baseToken, false);

    IFxShareableRebalancePool(_pool).withdrawFrom(_msgSender(), _amount, address(this));
    _mintShares(_baseToken, _receiver, _amount);

    emit Wrap(_baseToken, _msgSender(), _receiver, _amount);
  }

  /// @inheritdoc IFxUSD
  function mint(
    address _baseToken,
    uint256 _amountIn,
    address _receiver,
    uint256 _minOut
  )
    external
    override
    onlySupportedMarket(_baseToken)
    onlyMintableMarket(_baseToken, true)
    returns (uint256 _amountOut)
  {
    if (isUnderCollateral()) revert ErrorUnderCollateral();

    address _fToken = markets[_baseToken].fToken;
    _amountOut = _mintFToken(_baseToken, _fToken, _amountIn, _minOut);
    _mintShares(_baseToken, _receiver, _amountOut);

    emit Wrap(_baseToken, _msgSender(), _receiver, _amountOut);
  }

  /// @inheritdoc IFxUSD
  function earn(
    address _pool,
    uint256 _amount,
    address _receiver
  ) external override onlySupportedPool(_pool) {
    if (isUnderCollateral()) revert ErrorUnderCollateral();

    address _baseToken = IFxShareableRebalancePool(_pool).baseToken();
    _checkBaseToken(_baseToken);

    _burnShares(_baseToken, _msgSender(), _amount);
    emit Unwrap(_baseToken, _msgSender(), _receiver, _amount);

    _deposit(markets[_baseToken].fToken, _pool, _receiver, _amount);
  }

  /// @inheritdoc IFxUSD
  function mintAndEarn(
    address _pool,
    uint256 _amountIn,
    address _receiver,
    uint256 _minOut
  ) external override onlySupportedPool(_pool) returns (uint256 _amountOut) {
    if (isUnderCollateral()) revert ErrorUnderCollateral();

    address _baseToken = IFxShareableRebalancePool(_pool).baseToken();
    _checkBaseToken(_baseToken);
    _checkMarketMintable(_baseToken, true);

    address _fToken = markets[_baseToken].fToken;
    _amountOut = _mintFToken(_baseToken, _fToken, _amountIn, _minOut);
    _deposit(_fToken, _pool, _receiver, _amountOut);
  }

  /// @inheritdoc IFxUSD
  function redeem(
    address _baseToken,
    uint256 _amountIn,
    address _receiver,
    uint256 _minOut
  ) external override onlySupportedMarket(_baseToken) returns (uint256 _amountOut, uint256 _bonusOut) {
    if (isUnderCollateral()) revert ErrorUnderCollateral();

    address _market = markets[_baseToken].market;
    address _fToken = markets[_baseToken].fToken;

    uint256 _balance = IERC20Upgradeable(_fToken).balanceOf(address(this));
    (_amountOut, _bonusOut) = IFxMarketV2(_market).redeemFToken(_amountIn, _receiver, _minOut);
    // the real amount of fToken redeemed
    _amountIn = _balance - IERC20Upgradeable(_fToken).balanceOf(address(this));

    _burnShares(_baseToken, _msgSender(), _amountIn);
    emit Unwrap(_baseToken, _msgSender(), _receiver, _amountIn);
  }

  /// @inheritdoc IFxUSD
  function redeemFrom(
    address _pool,
    uint256 _amountIn,
    address _receiver,
    uint256 _minOut
  ) external override onlySupportedPool(_pool) returns (uint256 _amountOut, uint256 _bonusOut) {
    address _baseToken = IFxShareableRebalancePool(_pool).baseToken();
    address _market = markets[_baseToken].market;
    address _fToken = markets[_baseToken].fToken;

    // calculate the actual amount of fToken withdrawn from rebalance pool.
    _amountOut = IERC20Upgradeable(_fToken).balanceOf(address(this));
    IFxShareableRebalancePool(_pool).withdrawFrom(_msgSender(), _amountIn, address(this));
    _amountOut = IERC20Upgradeable(_fToken).balanceOf(address(this)) - _amountOut;

    // redeem fToken as base token
    // assume all fToken will be redeem for simplicity
    (_amountOut, _bonusOut) = IFxMarketV2(_market).redeemFToken(_amountOut, _receiver, _minOut);
  }

  /// @inheritdoc IFxUSD
  function autoRedeem(
    uint256 _amountIn,
    address _receiver,
    uint256[] memory _minOuts
  )
    external
    override
    returns (
      address[] memory _baseTokens,
      uint256[] memory _amountOuts,
      uint256[] memory _bonusOuts
    )
  {
    uint256 _numMarkets = supportedTokens.length();
    if (_minOuts.length != _numMarkets) revert ErrorLengthMismatch();

    _baseTokens = new address[](_numMarkets);
    _amountOuts = new uint256[](_numMarkets);
    _bonusOuts = new uint256[](_numMarkets);
    uint256[] memory _supplies = new uint256[](_numMarkets);

    bool _isUnderCollateral = false;
    for (uint256 i = 0; i < _numMarkets; i++) {
      _baseTokens[i] = supportedTokens.at(i);
      _supplies[i] = markets[_baseTokens[i]].managed;
      address _treasury = markets[_baseTokens[i]].treasury;
      if (IFxTreasuryV2(_treasury).isUnderCollateral()) _isUnderCollateral = true;
    }

    uint256 _supply = totalSupply();
    _burn(_msgSender(), _amountIn);

    if (_isUnderCollateral) {
      // redeem proportionally
      for (uint256 i = 0; i < _numMarkets; i++) {
        _amountOuts[i] = (_supplies[i] * _amountIn) / _supply;
      }
    } else {
      // redeem by sorted fToken amounts
      while (_amountIn > 0) {
        unchecked {
          uint256 maxSupply = _supplies[0];
          uint256 maxIndex = 0;
          for (uint256 i = 1; i < _numMarkets; i++) {
            if (_supplies[i] > maxSupply) {
              maxSupply = _supplies[i];
              maxIndex = i;
            }
          }
          if (_amountIn > maxSupply) _amountOuts[maxIndex] = maxSupply;
          else _amountOuts[maxIndex] = _amountIn;
          _supplies[maxIndex] -= _amountOuts[maxIndex];
          _amountIn -= _amountOuts[maxIndex];
        }
      }
    }

    for (uint256 i = 0; i < _numMarkets; i++) {
      if (_amountOuts[i] == 0) continue;
      emit Unwrap(_baseTokens[i], _msgSender(), _receiver, _amountOuts[i]);

      markets[_baseTokens[i]].managed -= _amountOuts[i];
      address _market = markets[_baseTokens[i]].market;
      (_amountOuts[i], _bonusOuts[i]) = IFxMarketV2(_market).redeemFToken(_amountOuts[i], _receiver, _minOuts[i]);
    }
  }

  /************************
   * Restricted Functions *
   ************************/

  /// @notice Update the mint capacity of the base token.
  /// @param _baseToken The address of base token of the market.
  /// @param _newCap The value of current mint capacity.
  function updateMintCap(address _baseToken, uint256 _newCap) external onlyRole(DEFAULT_ADMIN_ROLE) {
    if (!supportedTokens.contains(_baseToken)) revert ErrorUnsupportedMarket();

    uint256 _oldCap = markets[_baseToken].mintCap;
    markets[_baseToken].mintCap = _newCap;

    emit UpdateMintCap(_baseToken, _oldCap, _newCap);
  }

  /// @notice Add a new market to fxUSD.
  /// @param _market The address of market contract.
  /// @param _mintCap The mint capacity of the market.
  function addMarket(address _market, uint256 _mintCap) external onlyRole(DEFAULT_ADMIN_ROLE) {
    address _baseToken = IFxMarketV2(_market).baseToken();
    address _treasury = IFxMarketV2(_market).treasury();
    address _fToken = IFxMarketV2(_market).fToken();
    if (supportedTokens.contains(_baseToken)) revert ErrorMarketAlreadySupported();

    supportedTokens.add(_baseToken);
    markets[_baseToken] = FxMarketStruct(_fToken, _treasury, _market, _mintCap, 0);
    IERC20Upgradeable(_baseToken).safeApprove(_market, type(uint256).max);

    emit AddMarket(_baseToken, _mintCap);
  }

  /// @notice Add new supported rebalance pools to fxUSD.
  /// @param _pools The list of rebalance pools.
  function addRebalancePools(address[] memory _pools) external onlyRole(DEFAULT_ADMIN_ROLE) {
    for (uint256 i = 0; i < _pools.length; ++i) {
      address _baseToken = IFxShareableRebalancePool(_pools[i]).baseToken();
      _checkBaseToken(_baseToken);
      if (supportedPools.add(_pools[i])) {
        emit AddRebalancePool(_baseToken, _pools[i]);
      }
    }
  }

  /// @notice Add new supported rebalance pools to fxUSD.
  /// @param _pools The list of rebalance pools.
  function removeRebalancePools(address[] memory _pools) external onlyRole(DEFAULT_ADMIN_ROLE) {
    for (uint256 i = 0; i < _pools.length; ++i) {
      address _baseToken = IFxShareableRebalancePool(_pools[i]).baseToken();
      if (supportedPools.remove(_pools[i])) {
        emit RemoveRebalancePool(_baseToken, _pools[i]);
      }
    }
  }

  /**********************
   * Internal Functions *
   **********************/

  /// @dev Internal function to check base token.
  /// @param _baseToken The address of the base token.
  function _checkBaseToken(address _baseToken) private view {
    if (!supportedTokens.contains(_baseToken)) revert ErrorUnsupportedMarket();
  }

  /// @dev Internal function to check market.
  /// @param _baseToken The address of the base token.
  /// @param _checkCollateralRatio Whether to check collateral ratio.
  function _checkMarketMintable(address _baseToken, bool _checkCollateralRatio) private view {
    address _treasury = markets[_baseToken].treasury;
    if (_checkCollateralRatio) {
      uint256 _collateralRatio = IFxTreasuryV2(_treasury).collateralRatio();
      uint256 _stabilityRatio = IFxMarketV2(markets[_baseToken].market).stabilityRatio();
      // not allow to mint when collateral ratio <= stability ratio
      if (_collateralRatio <= _stabilityRatio) revert ErrorMarketInStabilityMode();
    }
    // not allow to mint when price is invalid
    if (!IFxTreasuryV2(_treasury).isBaseTokenPriceValid()) revert ErrorMarketWithInvalidPrice();
  }

  /// @dev Internal function to mint fToken.
  /// @param _baseToken The address of the base token.
  /// @param _fToken The address of the corresponding fToken.
  /// @param _amountIn The amount of base token to use.
  /// @param _minOut The minimum amount of fxUSD should receive.
  /// @return _amountOut The amount of fxUSD received by the receiver.
  function _mintFToken(
    address _baseToken,
    address _fToken,
    uint256 _amountIn,
    uint256 _minOut
  ) private returns (uint256 _amountOut) {
    address _market = markets[_baseToken].market;
    uint256 _mintCap = markets[_baseToken].mintCap;
    IERC20Upgradeable(_baseToken).safeTransferFrom(_msgSender(), address(this), _amountIn);
    uint256 _balance = IERC20Upgradeable(_baseToken).balanceOf(address(this));
    // @note approved in `addMarket`.
    _amountOut = IFxMarketV2(_market).mintFToken(_amountIn, address(this), _minOut);

    if (IERC20Upgradeable(_fToken).totalSupply() > _mintCap) revert ErrorExceedMintCap();

    // refund exceeding base token
    uint256 _baseTokenUsed = _balance - IERC20Upgradeable(_baseToken).balanceOf(address(this));
    if (_baseTokenUsed < _amountIn) {
      unchecked {
        IERC20Upgradeable(_baseToken).safeTransfer(_msgSender(), _amountIn - _baseTokenUsed);
      }
    }
  }

  /// @dev Internal function to mint fxUSD.
  /// @param _baseToken The address of the base token.
  /// @param _receiver The address of fxUSD recipient.
  /// @param _amount The amount of fxUSD to mint.
  function _mintShares(
    address _baseToken,
    address _receiver,
    uint256 _amount
  ) private {
    unchecked {
      markets[_baseToken].managed += _amount;
    }

    _mint(_receiver, _amount);
  }

  /// @dev Internal function to burn fxUSD.
  /// @param _baseToken The address of the base token.
  /// @param _owner The address of fxUSD owner.
  /// @param _amount The amount of fxUSD to burn.
  function _burnShares(
    address _baseToken,
    address _owner,
    uint256 _amount
  ) private {
    uint256 _managed = markets[_baseToken].managed;
    if (_amount > _managed) revert ErrorInsufficientLiquidity();
    unchecked {
      markets[_baseToken].managed -= _amount;
    }

    _burn(_owner, _amount);
  }

  /// @dev Internal function to deposit fToken to rebalance pool.
  /// @param _fToken the address of fToken.
  /// @param _pool The address of rebalance pool.
  /// @param _receiver The address of rebalance pool share recipient.
  /// @param _amount The amount of fToken to deposit.
  function _deposit(
    address _fToken,
    address _pool,
    address _receiver,
    uint256 _amount
  ) internal {
    IERC20Upgradeable(_fToken).safeApprove(_pool, 0);
    IERC20Upgradeable(_fToken).safeApprove(_pool, _amount);
    IFxShareableRebalancePool(_pool).deposit(_amount, _receiver);
  }
}

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

pragma solidity ^0.8.0;

import "./IAccessControlUpgradeable.sol";
import "../utils/ContextUpgradeable.sol";
import "../utils/StringsUpgradeable.sol";
import "../utils/introspection/ERC165Upgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControlUpgradeable, ERC165Upgradeable {
    function __AccessControl_init() internal onlyInitializing {
    }

    function __AccessControl_init_unchained() internal onlyInitializing {
    }
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

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

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

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

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

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

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

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

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

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

        _revokeRole(role, account);
    }

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

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

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

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

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

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC5267.sol)

pragma solidity ^0.8.0;

interface IERC5267Upgradeable {
    /**
     * @dev MAY be emitted to signal that the domain could have changed.
     */
    event EIP712DomainChanged();

    /**
     * @dev returns the fields and values that describe the domain separator used by this contract for EIP-712
     * signature.
     */
    function eip712Domain()
        external
        view
        returns (
            bytes1 fields,
            string memory name,
            string memory version,
            uint256 chainId,
            address verifyingContract,
            bytes32 salt,
            uint256[] memory extensions
        );
}

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

pragma solidity ^0.8.2;

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

import "./IERC20Upgradeable.sol";
import "./extensions/IERC20MetadataUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../proxy/utils/Initializable.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.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * 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 ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable, IERC20MetadataUpgradeable {
    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}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing {
        __ERC20_init_unchained(name_, symbol_);
    }

    function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
        _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 default value returned by this function, unless
     * it's 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:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, 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}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, 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}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, 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) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, 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) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * 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:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

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

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, 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;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _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;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _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 Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - 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 {}

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[45] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/ERC20Permit.sol)

pragma solidity ^0.8.0;

import "./IERC20PermitUpgradeable.sol";
import "../ERC20Upgradeable.sol";
import "../../../utils/cryptography/ECDSAUpgradeable.sol";
import "../../../utils/cryptography/EIP712Upgradeable.sol";
import "../../../utils/CountersUpgradeable.sol";
import "../../../proxy/utils/Initializable.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._
 *
 * @custom:storage-size 51
 */
abstract contract ERC20PermitUpgradeable is Initializable, ERC20Upgradeable, IERC20PermitUpgradeable, EIP712Upgradeable {
    using CountersUpgradeable for CountersUpgradeable.Counter;

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

    // solhint-disable-next-line var-name-mixedcase
    bytes32 private constant _PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    /**
     * @dev In previous versions `_PERMIT_TYPEHASH` was declared as `immutable`.
     * However, to ensure consistency with the upgradeable transpiler, we will continue
     * to reserve a slot.
     * @custom:oz-renamed-from _PERMIT_TYPEHASH
     */
    // solhint-disable-next-line var-name-mixedcase
    bytes32 private _PERMIT_TYPEHASH_DEPRECATED_SLOT;

    /**
     * @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.
     */
    function __ERC20Permit_init(string memory name) internal onlyInitializing {
        __EIP712_init_unchained(name, "1");
    }

    function __ERC20Permit_init_unchained(string memory) internal onlyInitializing {}

    /**
     * @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 = ECDSAUpgradeable.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) {
        CountersUpgradeable.Counter storage nonce = _nonces[owner];
        current = nonce.current();
        nonce.increment();
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20Upgradeable.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20MetadataUpgradeable is IERC20Upgradeable {
    /**
     * @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
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20PermitUpgradeable {
    /**
     * @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
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

import "../IERC20Upgradeable.sol";
import "../extensions/IERC20PermitUpgradeable.sol";
import "../../../utils/AddressUpgradeable.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 SafeERC20Upgradeable {
    using AddressUpgradeable for address;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20Upgradeable token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20Upgradeable 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(IERC20Upgradeable token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20Upgradeable token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

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

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20PermitUpgradeable token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20Upgradeable token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

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

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20Upgradeable token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

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

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

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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 CountersUpgradeable {
    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
// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../StringsUpgradeable.sol";

/**
 * @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 ECDSAUpgradeable {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV // Deprecated in v4.8
    }

    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");
        }
    }

    /**
     * @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) {
        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.
            /// @solidity memory-safe-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 {
            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 = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 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 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 message) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, "\x19Ethereum Signed Message:\n32")
            mstore(0x1c, hash)
            message := keccak256(0x00, 0x3c)
        }
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. 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(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", StringsUpgradeable.toString(s.length), s));
    }

    /**
     * @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 data) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, "\x19\x01")
            mstore(add(ptr, 0x02), domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            data := keccak256(ptr, 0x42)
        }
    }

    /**
     * @dev Returns an Ethereum Signed Data with intended validator, created from a
     * `validator` and `data` according to the version 0 of EIP-191.
     *
     * See {recover}.
     */
    function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x00", validator, data));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/EIP712.sol)

pragma solidity ^0.8.8;

import "./ECDSAUpgradeable.sol";
import "../../interfaces/IERC5267Upgradeable.sol";
import "../../proxy/utils/Initializable.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].
 *
 * NOTE: In the upgradeable version of this contract, the cached values will correspond to the address, and the domain
 * separator of the implementation contract. This will cause the `_domainSeparatorV4` function to always rebuild the
 * separator from the immutable values, which is cheaper than accessing a cached version in cold storage.
 *
 * _Available since v3.4._
 *
 * @custom:storage-size 52
 */
abstract contract EIP712Upgradeable is Initializable, IERC5267Upgradeable {
    bytes32 private constant _TYPE_HASH =
        keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");

    /// @custom:oz-renamed-from _HASHED_NAME
    bytes32 private _hashedName;
    /// @custom:oz-renamed-from _HASHED_VERSION
    bytes32 private _hashedVersion;

    string private _name;
    string private _version;

    /**
     * @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].
     */
    function __EIP712_init(string memory name, string memory version) internal onlyInitializing {
        __EIP712_init_unchained(name, version);
    }

    function __EIP712_init_unchained(string memory name, string memory version) internal onlyInitializing {
        _name = name;
        _version = version;

        // Reset prior values in storage if upgrading
        _hashedName = 0;
        _hashedVersion = 0;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        return _buildDomainSeparator();
    }

    function _buildDomainSeparator() private view returns (bytes32) {
        return keccak256(abi.encode(_TYPE_HASH, _EIP712NameHash(), _EIP712VersionHash(), 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 ECDSAUpgradeable.toTypedDataHash(_domainSeparatorV4(), structHash);
    }

    /**
     * @dev See {EIP-5267}.
     *
     * _Available since v4.9._
     */
    function eip712Domain()
        public
        view
        virtual
        override
        returns (
            bytes1 fields,
            string memory name,
            string memory version,
            uint256 chainId,
            address verifyingContract,
            bytes32 salt,
            uint256[] memory extensions
        )
    {
        // If the hashed name and version in storage are non-zero, the contract hasn't been properly initialized
        // and the EIP712 domain is not reliable, as it will be missing name and version.
        require(_hashedName == 0 && _hashedVersion == 0, "EIP712: Uninitialized");

        return (
            hex"0f", // 01111
            _EIP712Name(),
            _EIP712Version(),
            block.chainid,
            address(this),
            bytes32(0),
            new uint256[](0)
        );
    }

    /**
     * @dev The name parameter for the EIP712 domain.
     *
     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
     * are a concern.
     */
    function _EIP712Name() internal virtual view returns (string memory) {
        return _name;
    }

    /**
     * @dev The version parameter for the EIP712 domain.
     *
     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
     * are a concern.
     */
    function _EIP712Version() internal virtual view returns (string memory) {
        return _version;
    }

    /**
     * @dev The hash of the name parameter for the EIP712 domain.
     *
     * NOTE: In previous versions this function was virtual. In this version you should override `_EIP712Name` instead.
     */
    function _EIP712NameHash() internal view returns (bytes32) {
        string memory name = _EIP712Name();
        if (bytes(name).length > 0) {
            return keccak256(bytes(name));
        } else {
            // If the name is empty, the contract may have been upgraded without initializing the new storage.
            // We return the name hash in storage if non-zero, otherwise we assume the name is empty by design.
            bytes32 hashedName = _hashedName;
            if (hashedName != 0) {
                return hashedName;
            } else {
                return keccak256("");
            }
        }
    }

    /**
     * @dev The hash of the version parameter for the EIP712 domain.
     *
     * NOTE: In previous versions this function was virtual. In this version you should override `_EIP712Version` instead.
     */
    function _EIP712VersionHash() internal view returns (bytes32) {
        string memory version = _EIP712Version();
        if (bytes(version).length > 0) {
            return keccak256(bytes(version));
        } else {
            // If the version is empty, the contract may have been upgraded without initializing the new storage.
            // We return the version hash in storage if non-zero, otherwise we assume the version is empty by design.
            bytes32 hashedVersion = _hashedVersion;
            if (hashedVersion != 0) {
                return hashedVersion;
            } else {
                return keccak256("");
            }
        }
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[48] private __gap;
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

pragma solidity ^0.8.0;

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

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

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

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

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

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

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

pragma solidity ^0.8.0;

import "./math/MathUpgradeable.sol";
import "./math/SignedMathUpgradeable.sol";

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

            return true;
        } else {
            return false;
        }
    }

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

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

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

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

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

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

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

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

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

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

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

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

        return result;
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

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

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

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

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

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

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

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

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

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

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

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

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

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

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

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

        return result;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IFxBoostableRebalancePool {
  /**********
   * Events *
   **********/

  /// @notice Emitted when user deposit asset into this contract.
  /// @param owner The address of asset owner.
  /// @param reciever The address of receiver of the asset in this contract.
  /// @param amount The amount of asset deposited.
  event Deposit(address indexed owner, address indexed reciever, uint256 amount);

  /// @notice Emitted when the amount of deposited asset changed due to liquidation or deposit or unlock.
  /// @param owner The address of asset owner.
  /// @param newDeposit The new amount of deposited asset.
  /// @param loss The amount of asset used by liquidation.
  event UserDepositChange(address indexed owner, uint256 newDeposit, uint256 loss);

  /// @notice Emitted when user withdraw asset.
  /// @param owner The address of asset owner.
  /// @param reciever The address of receiver of the asset.
  /// @param amount The amount of token to withdraw.
  event Withdraw(address indexed owner, address indexed reciever, uint256 amount);

  /// @notice Emitted when liquidation happens.
  /// @param liquidated The amount of asset liquidated.
  /// @param baseGained The amount of base token gained.
  event Liquidate(uint256 liquidated, uint256 baseGained);

  /// @notice Emitted when the address of reward wrapper is updated.
  /// @param oldWrapper The address of previous reward wrapper.
  /// @param newWrapper The address of current reward wrapper.
  event UpdateWrapper(address indexed oldWrapper, address indexed newWrapper);

  /// @notice Emitted when the liquidatable collateral ratio is updated.
  /// @param oldRatio The previous liquidatable collateral ratio.
  /// @param newRatio The current liquidatable collateral ratio.
  event UpdateLiquidatableCollateralRatio(uint256 oldRatio, uint256 newRatio);

  /**********
   * Errors *
   **********/

  /// @dev Thrown then the src token mismatched.
  error ErrorWrapperSrcMismatch();

  /// @dev Thrown then the dst token mismatched.
  error ErrorWrapperDstMismatch();

  /// @dev Thrown when the deposited amount is zero.
  error DepositZeroAmount();

  /// @dev Thrown when the withdrawn amount is zero.
  error WithdrawZeroAmount();

  /// @dev Thrown the cannot liquidate.
  error CannotLiquidate();

  /*************************
   * Public View Functions *
   *************************/

  /// @notice Return the address of treasury contract.
  function treasury() external view returns (address);

  /// @notice Return the address of market contract.
  function market() external view returns (address);

  /// @notice Return the address of base token.
  function baseToken() external view returns (address);

  /// @notice Return the address of underlying token of this contract.
  function asset() external view returns (address);

  /// @notice Return the total amount of asset deposited to this contract.
  function totalSupply() external view returns (uint256);

  /// @notice Return the amount of deposited asset for some specific user.
  /// @param account The address of user to query.
  function balanceOf(address account) external view returns (uint256);

  /// @notice Return the current boost ratio for some specific user.
  /// @param account The address of user to query, multiplied by 1e18.
  function getBoostRatio(address account) external view returns (uint256);

  /****************************
   * Public Mutated Functions *
   ****************************/

  /// @notice Deposit some asset to this contract.
  /// @dev Use `amount=uint256(-1)` if you want to deposit all asset held.
  /// @param amount The amount of asset to deposit.
  /// @param receiver The address of recipient for the deposited asset.
  function deposit(uint256 amount, address receiver) external;

  /// @notice Withdraw asset from this contract.
  function withdraw(uint256 amount, address receiver) external;

  /// @notice Liquidate asset for base token.
  /// @param maxAmount The maximum amount of asset to liquidate.
  /// @param minBaseOut The minimum amount of base token should receive.
  /// @return liquidated The amount of asset liquidated.
  /// @return baseOut The amount of base token received.
  function liquidate(uint256 maxAmount, uint256 minBaseOut) external returns (uint256 liquidated, uint256 baseOut);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IFxFractionalTokenV2 {
  /**********
   * Errors *
   **********/

  /// @dev Thrown when caller is not treasury contract.
  error ErrorCallerIsNotTreasury();

  /*************************
   * Public View Functions *
   *************************/

  /// @notice Return the net asset value for the token, multipled by 1e18.
  function nav() external view returns (uint256);

  /****************************
   * Public Mutated Functions *
   ****************************/

  /// @notice Mint some token to someone.
  /// @param to The address of recipient.
  /// @param amount The amount of token to mint.
  function mint(address to, uint256 amount) external;

  /// @notice Burn some token from someone.
  /// @param from The address of owner to burn.
  /// @param amount The amount of token to burn.
  function burn(address from, uint256 amount) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IFxMarketV2 {
  /**********
   * Events *
   **********/

  /// @notice Emitted when fToken is minted.
  /// @param owner The address of base token owner.
  /// @param recipient The address of receiver for fToken or xToken.
  /// @param baseTokenIn The amount of base token deposited.
  /// @param fTokenOut The amount of fToken minted.
  /// @param mintFee The amount of mint fee charged.
  event MintFToken(
    address indexed owner,
    address indexed recipient,
    uint256 baseTokenIn,
    uint256 fTokenOut,
    uint256 mintFee
  );

  /// @notice Emitted when xToken is minted.
  /// @param owner The address of base token owner.
  /// @param recipient The address of receiver for fToken or xToken.
  /// @param baseTokenIn The amount of base token deposited.
  /// @param xTokenOut The amount of xToken minted.
  /// @param bonus The amount of base token as bonus.
  /// @param mintFee The amount of mint fee charged.
  event MintXToken(
    address indexed owner,
    address indexed recipient,
    uint256 baseTokenIn,
    uint256 xTokenOut,
    uint256 bonus,
    uint256 mintFee
  );

  /// @notice Emitted when someone redeem base token with fToken or xToken.
  /// @param owner The address of fToken and xToken owner.
  /// @param recipient The address of receiver for base token.
  /// @param fTokenBurned The amount of fToken burned.
  /// @param baseTokenOut The amount of base token redeemed.
  /// @param bonus The amount of base token as bonus.
  /// @param redeemFee The amount of redeem fee charged.
  event RedeemFToken(
    address indexed owner,
    address indexed recipient,
    uint256 fTokenBurned,
    uint256 baseTokenOut,
    uint256 bonus,
    uint256 redeemFee
  );

  /// @notice Emitted when someone redeem base token with fToken or xToken.
  /// @param owner The address of fToken and xToken owner.
  /// @param recipient The address of receiver for base token.
  /// @param xTokenBurned The amount of xToken burned.
  /// @param baseTokenOut The amount of base token redeemed.
  /// @param redeemFee The amount of redeem fee charged.
  event RedeemXToken(
    address indexed owner,
    address indexed recipient,
    uint256 xTokenBurned,
    uint256 baseTokenOut,
    uint256 redeemFee
  );

  /// @notice Emitted when the fee ratio for minting fToken is updated.
  /// @param defaultFeeRatio The new default fee ratio, multipled by 1e18.
  /// @param extraFeeRatio The new extra fee ratio, multipled by 1e18.
  event UpdateMintFeeRatioFToken(uint256 defaultFeeRatio, int256 extraFeeRatio);

  /// @notice Emitted when the fee ratio for minting xToken is updated.
  /// @param defaultFeeRatio The new default fee ratio, multipled by 1e18.
  /// @param extraFeeRatio The new extra fee ratio, multipled by 1e18.
  event UpdateMintFeeRatioXToken(uint256 defaultFeeRatio, int256 extraFeeRatio);

  /// @notice Emitted when the fee ratio for redeeming fToken is updated.
  /// @param defaultFeeRatio The new default fee ratio, multipled by 1e18.
  /// @param extraFeeRatio The new extra fee ratio, multipled by 1e18.
  event UpdateRedeemFeeRatioFToken(uint256 defaultFeeRatio, int256 extraFeeRatio);

  /// @notice Emitted when the fee ratio for redeeming xToken is updated.
  /// @param defaultFeeRatio The new default fee ratio, multipled by 1e18.
  /// @param extraFeeRatio The new extra fee ratio, multipled by 1e18.
  event UpdateRedeemFeeRatioXToken(uint256 defaultFeeRatio, int256 extraFeeRatio);

  /// @notice Emitted when the stability ratio is updated.
  /// @param oldRatio The previous collateral ratio to enter stability mode, multiplied by 1e18.
  /// @param newRatio The current collateral ratio to enter stability mode, multiplied by 1e18.
  event UpdateStabilityRatio(uint256 oldRatio, uint256 newRatio);

  /// @notice Emitted when the platform contract is updated.
  /// @param oldPlatform The address of previous platform contract.
  /// @param newPlatform The address of current platform contract.
  event UpdatePlatform(address indexed oldPlatform, address indexed newPlatform);

  /// @notice Emitted when the  reserve pool contract is updated.
  /// @param oldReservePool The address of previous reserve pool contract.
  /// @param newReservePool The address of current reserve pool contract.
  event UpdateReservePool(address indexed oldReservePool, address indexed newReservePool);

  /// @notice Emitted when the RebalancePoolRegistry contract is updated.
  /// @param oldRegistry The address of previous RebalancePoolRegistry contract.
  /// @param newRegistry The address of current RebalancePoolRegistry contract.
  event UpdateRebalancePoolRegistry(address indexed oldRegistry, address indexed newRegistry);

  /// @notice Pause or unpause mint.
  /// @param oldStatus The previous status for mint.
  /// @param newStatus The current status for mint.
  event UpdateMintStatus(bool oldStatus, bool newStatus);

  /// @notice Pause or unpause redeem.
  /// @param oldStatus The previous status for redeem.
  /// @param newStatus The current status for redeem.
  event UpdateRedeemStatus(bool oldStatus, bool newStatus);

  /// @notice Pause or unpause fToken mint in stability mode.
  /// @param oldStatus The previous status for mint.
  /// @param newStatus The current status for mint.
  event UpdateFTokenMintStatusInStabilityMode(bool oldStatus, bool newStatus);

  /// @notice Pause or unpause xToken redeem in stability mode.
  /// @param oldStatus The previous status for redeem.
  /// @param newStatus The current status for redeem.
  event UpdateXTokenRedeemStatusInStabilityMode(bool oldStatus, bool newStatus);

  /**********
   * Errors *
   **********/

  /// @dev Thrown when the caller if not fUSD contract.
  error ErrorCallerNotFUSD();

  /// @dev Thrown when token mint is paused.
  error ErrorMintPaused();

  /// @dev Thrown when fToken mint is paused in stability mode.
  error ErrorFTokenMintPausedInStabilityMode();

  /// @dev Thrown when mint with zero amount base token.
  error ErrorMintZeroAmount();

  /// @dev Thrown when the amount of fToken is not enough.
  error ErrorInsufficientFTokenOutput();

  /// @dev Thrown when the amount of xToken is not enough.
  error ErrorInsufficientXTokenOutput();

  /// @dev Thrown when token redeem is paused.
  error ErrorRedeemPaused();

  /// @dev Thrown when xToken redeem is paused in stability mode.
  error ErrorXTokenRedeemPausedInStabilityMode();

  /// @dev Thrown when redeem with zero amount fToken or xToken.
  error ErrorRedeemZeroAmount();

  /// @dev Thrown when the amount of base token is not enough.
  error ErrorInsufficientBaseOutput();

  /// @dev Thrown when the stability ratio is too large.
  error ErrorStabilityRatioTooLarge();

  /// @dev Thrown when the default fee is too large.
  error ErrorDefaultFeeTooLarge();

  /// @dev Thrown when the delta fee is too small.
  error ErrorDeltaFeeTooSmall();

  /// @dev Thrown when the sum of default fee and delta fee is too large.
  error ErrorTotalFeeTooLarge();

  /// @dev Thrown when the given address is zero.
  error ErrorZeroAddress();

  /*************************
   * Public View Functions *
   *************************/

  /// @notice The address of Treasury contract.
  function treasury() external view returns (address);

  /// @notice Return the address of base token.
  function baseToken() external view returns (address);

  /// @notice Return the address fractional base token.
  function fToken() external view returns (address);

  /// @notice Return the address leveraged base token.
  function xToken() external view returns (address);

  /// @notice Return the address of fxUSD token.
  function fxUSD() external view returns (address);

  /// @notice Return the collateral ratio to enter stability mode, multiplied by 1e18.
  function stabilityRatio() external view returns (uint256);

  /****************************
   * Public Mutated Functions *
   ****************************/

  /// @notice Mint some fToken with some base token.
  /// @param baseIn The amount of wrapped value of base token supplied, use `uint256(-1)` to supply all base token.
  /// @param recipient The address of receiver for fToken.
  /// @param minFTokenMinted The minimum amount of fToken should be received.
  /// @return fTokenMinted The amount of fToken should be received.
  function mintFToken(
    uint256 baseIn,
    address recipient,
    uint256 minFTokenMinted
  ) external returns (uint256 fTokenMinted);

  /// @notice Mint some xToken with some base token.
  /// @param baseIn The amount of wrapped value of base token supplied, use `uint256(-1)` to supply all base token.
  /// @param recipient The address of receiver for xToken.
  /// @param minXTokenMinted The minimum amount of xToken should be received.
  /// @return xTokenMinted The amount of xToken should be received.
  /// @return bonus The amount of wrapped value of base token as bonus.
  function mintXToken(
    uint256 baseIn,
    address recipient,
    uint256 minXTokenMinted
  ) external returns (uint256 xTokenMinted, uint256 bonus);

  /// @notice Redeem base token with fToken.
  /// @param fTokenIn the amount of fToken to redeem, use `uint256(-1)` to redeem all fToken.
  /// @param recipient The address of receiver for base token.
  /// @param minBaseOut The minimum amount of wrapped value of base token should be received.
  /// @return baseOut The amount of wrapped value of base token should be received.
  /// @return bonus The amount of wrapped value of base token as bonus.
  function redeemFToken(
    uint256 fTokenIn,
    address recipient,
    uint256 minBaseOut
  ) external returns (uint256 baseOut, uint256 bonus);

  /// @notice Redeem base token with xToken.
  /// @param xTokenIn the amount of xToken to redeem, use `uint256(-1)` to redeem all xToken.
  /// @param recipient The address of receiver for base token.
  /// @param minBaseOut The minimum amount of wrapped value of base token should be received.
  /// @return baseOut The amount of wrapped value of base token should be received.
  function redeemXToken(
    uint256 xTokenIn,
    address recipient,
    uint256 minBaseOut
  ) external returns (uint256 baseOut);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

interface IFxShareableRebalancePool is IFxBoostableRebalancePool {
  /**********
   * Events *
   **********/

  /// @notice Emitted when one user share votes to another user.
  /// @param owner The address of votes owner.
  /// @param staker The address of staker to share votes.
  event ShareVote(address indexed owner, address indexed staker);

  /// @notice Emitted when the owner cancel sharing to some staker.
  /// @param owner The address of votes owner.
  /// @param staker The address of staker to cancel votes share.
  event CancelShareVote(address indexed owner, address indexed staker);

  /// @notice Emitted when staker accept the vote sharing.
  /// @param staker The address of the staker.
  /// @param oldOwner The address of the previous vote sharing owner.
  /// @param newOwner The address of the current vote sharing owner.
  event AcceptSharedVote(address indexed staker, address indexed oldOwner, address indexed newOwner);

  /**********
   * Errors *
   **********/

  /// @dev Thrown when caller shares votes to self.
  error ErrorSelfSharingIsNotAllowed();

  /// @dev Thrown when a staker with shared votes try to share its votes to others.
  error ErrorCascadedSharingIsNotAllowed();

  /// @dev Thrown when staker try to accept non-allowed vote sharing.
  error ErrorVoteShareNotAllowed();

  /// @dev Thrown when staker try to reject a non-existed vote sharing.
  error ErrorNoAcceptedSharedVote();

  /// @dev Thrown when the staker has ability to share ve balance.
  error ErrorVoteOwnerCannotStake();

  /// @dev Thrown when staker try to accept twice.
  error ErrorRepeatAcceptSharedVote();

  /*************************
   * Public View Functions *
   *************************/

  /// @notice Return the owner of votes of some staker.
  /// @param account The address of user to query.
  function getStakerVoteOwner(address account) external view returns (address);

  /****************************
   * Public Mutated Functions *
   ****************************/

  /// @notice Withdraw asset from this contract on behalf of someone
  function withdrawFrom(
    address owner,
    uint256 amount,
    address receiver
  ) external;

  /// @notice Owner changes the vote sharing state for some user.
  /// @param staker The address of user to change.
  function toggleVoteSharing(address staker) external;

  /// @notice Staker accepts the vote sharing.
  /// @param newOwner The address of the owner of the votes.
  function acceptSharedVote(address newOwner) external;

  /// @notice Staker reject the current vote sharing.
  function rejectSharedVote() external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IFxTreasuryV2 {
  /**********
   * Events *
   **********/

  /// @notice Emitted when the platform contract is updated.
  /// @param oldPlatform The address of previous platform contract.
  /// @param newPlatform The address of current platform contract.
  event UpdatePlatform(address indexed oldPlatform, address indexed newPlatform);

  /// @notice Emitted when the RebalancePoolSplitter contract is updated.
  /// @param oldRebalancePoolSplitter The address of previous RebalancePoolSplitter contract.
  /// @param newRebalancePoolSplitter The address of current RebalancePoolSplitter.
  event UpdateRebalancePoolSplitter(address indexed oldRebalancePoolSplitter, address indexed newRebalancePoolSplitter);

  /// @notice Emitted when the price oracle contract is updated.
  /// @param oldPriceOracle The address of previous price oracle.
  /// @param newPriceOracle The address of current price oracle.
  event UpdatePriceOracle(address indexed oldPriceOracle, address indexed newPriceOracle);

  /// @notice Emitted when the strategy contract is updated.
  /// @param oldStrategy The address of previous strategy.
  /// @param newStrategy The address of current strategy.
  event UpdateStrategy(address indexed oldStrategy, address indexed newStrategy);

  /// @notice Emitted when the base token cap is updated.
  /// @param oldBaseTokenCap The value of previous base token cap.
  /// @param newBaseTokenCap The value of current base token cap.
  event UpdateBaseTokenCap(uint256 oldBaseTokenCap, uint256 newBaseTokenCap);

  /// @notice Emitted when the EMA sample interval is updated.
  /// @param oldSampleInterval The value of previous EMA sample interval.
  /// @param newSampleInterval The value of current EMA sample interval.
  event UpdateEMASampleInterval(uint256 oldSampleInterval, uint256 newSampleInterval);

  /// @notice Emitted when the reference price is updated.
  /// @param oldPrice The value of previous reference price.
  /// @param newPrice The value of current reference price.
  event Settle(uint256 oldPrice, uint256 newPrice);

  /// @notice Emitted when the ratio for rebalance pool is updated.
  /// @param oldRatio The value of the previous ratio, multipled by 1e9.
  /// @param newRatio The value of the current ratio, multipled by 1e9.
  event UpdateRebalancePoolRatio(uint256 oldRatio, uint256 newRatio);

  /// @notice Emitted when the ratio for harvester is updated.
  /// @param oldRatio The value of the previous ratio, multipled by 1e9.
  /// @param newRatio The value of the current ratio, multipled by 1e9.
  event UpdateHarvesterRatio(uint256 oldRatio, uint256 newRatio);

  /// @notice Emitted when someone harvest pending stETH rewards.
  /// @param caller The address of caller.
  /// @param totalRewards The amount of total harvested rewards.
  /// @param rebalancePoolRewards The amount of harvested rewards distributed to stability pool.
  /// @param harvestBounty The amount of harvested rewards distributed to caller as harvest bounty.
  event Harvest(address indexed caller, uint256 totalRewards, uint256 rebalancePoolRewards, uint256 harvestBounty);

  /**********
   * Errors *
   **********/

  /// @dev Thrown when the collateral ratio is smaller than 100%.
  error ErrorCollateralRatioTooSmall();

  /// @dev Thrown when mint exceed total capacity.
  error ErrorExceedTotalCap();

  /// @dev Thrown when the oracle price is invalid.
  error ErrorInvalidOraclePrice();

  /// @dev Thrown when the twap price is invalid.
  error ErrorInvalidTwapPrice();

  /// @dev Thrown when initialize protocol twice.
  error ErrorProtocolInitialized();

  /// @dev Thrown when the initial amount of base token is not enough.
  error ErrorInsufficientInitialBaseToken();

  /// @dev Thrown when current is under collateral.
  error ErrorUnderCollateral();

  /// @dev Thrown when the sample internal for EMA is too small.
  error ErrorEMASampleIntervalTooSmall();

  /// @dev Thrown when the expense ratio exceeds `MAX_REBALANCE_POOL_RATIO`.
  error ErrorRebalancePoolRatioTooLarge();

  /// @dev Thrown when the harvester ratio exceeds `MAX_HARVESTER_RATIO`.
  error ErrorHarvesterRatioTooLarge();

  /// @dev Thrown when the given address is zero.
  error ErrorZeroAddress();

  /*********
   * Enums *
   *********/

  enum Action {
    None,
    MintFToken,
    MintXToken,
    RedeemFToken,
    RedeemXToken
  }

  /*************************
   * Public View Functions *
   *************************/

  /// @notice Return the address of base token.
  function baseToken() external view returns (address);

  /// @notice Return the address fractional base token.
  function fToken() external view returns (address);

  /// @notice Return the address leveraged base token.
  function xToken() external view returns (address);

  /// @notice The reference base token price.
  function referenceBaseTokenPrice() external view returns (uint256);

  /// @notice The current base token price.
  function currentBaseTokenPrice() external view returns (uint256);

  /// @notice Return whether the price is valid.
  function isBaseTokenPriceValid() external view returns (bool);

  /// @notice Return the total amount of underlying value of base token deposited.
  function totalBaseToken() external view returns (uint256);

  /// @notice Return the address of strategy contract.
  function strategy() external view returns (address);

  /// @notice Return the total amount of base token managed by strategy.
  function strategyUnderlying() external view returns (uint256);

  /// @notice Return the current collateral ratio of fToken, multipled by 1e18.
  function collateralRatio() external view returns (uint256);

  /// @notice Return whether the system is under collateral.
  function isUnderCollateral() external view returns (bool);

  /// @notice Compute the amount of base token needed to reach the new collateral ratio.
  /// @param newCollateralRatio The target collateral ratio, multipled by 1e18.
  /// @return maxBaseIn The amount of underlying value of base token needed.
  /// @return maxFTokenMintable The amount of fToken can be minted.
  function maxMintableFToken(uint256 newCollateralRatio)
    external
    view
    returns (uint256 maxBaseIn, uint256 maxFTokenMintable);

  /// @notice Compute the amount of base token needed to reach the new collateral ratio.
  /// @param newCollateralRatio The target collateral ratio, multipled by 1e18.
  /// @return maxBaseIn The amount of underlying value of base token needed.
  /// @return maxXTokenMintable The amount of xToken can be minted.
  function maxMintableXToken(uint256 newCollateralRatio)
    external
    view
    returns (uint256 maxBaseIn, uint256 maxXTokenMintable);

  /// @notice Compute the amount of fToken needed to reach the new collateral ratio.
  /// @param newCollateralRatio The target collateral ratio, multipled by 1e18.
  /// @return maxBaseOut The amount of underlying value of base token redeemed.
  /// @return maxFTokenRedeemable The amount of fToken needed.
  function maxRedeemableFToken(uint256 newCollateralRatio)
    external
    view
    returns (uint256 maxBaseOut, uint256 maxFTokenRedeemable);

  /// @notice Compute the amount of xToken needed to reach the new collateral ratio.
  /// @param newCollateralRatio The target collateral ratio, multipled by 1e18.
  /// @return maxBaseOut The amount of underlying value of base token redeemed.
  /// @return maxXTokenRedeemable The amount of xToken needed.
  function maxRedeemableXToken(uint256 newCollateralRatio)
    external
    view
    returns (uint256 maxBaseOut, uint256 maxXTokenRedeemable);

  /// @notice Return the exponential moving average of the leverage ratio.
  function leverageRatio() external view returns (uint256);

  /// @notice Convert underlying token amount to wrapped token amount.
  /// @param amount The underlying token amount.
  function getWrapppedValue(uint256 amount) external view returns (uint256);

  /// @notice Convert wrapped token amount to underlying token amount.
  /// @param amount The wrapped token amount.
  function getUnderlyingValue(uint256 amount) external view returns (uint256);

  /// @notice Return the fee ratio distributed to rebalance pool, multipled by 1e9.
  function getRebalancePoolRatio() external view returns (uint256);

  /// @notice Return the fee ratio distributed to harvester, multipled by 1e9.
  function getHarvesterRatio() external view returns (uint256);

  /****************************
   * Public Mutated Functions *
   ****************************/

  /// @notice Initialize the protocol.
  /// @param baseIn The amount of underlying value of the base token used to initialize.
  function initializeProtocol(uint256 baseIn) external returns (uint256 fTokenOut, uint256 xTokenOut);

  /// @notice Mint fToken with some base token.
  /// @param baseIn The amount of underlying value of base token deposited.
  /// @param recipient The address of receiver.
  /// @return fTokenOut The amount of fToken minted.
  function mintFToken(uint256 baseIn, address recipient) external returns (uint256 fTokenOut);

  /// @notice Mint xToken with some base token.
  /// @param baseIn The amount of underlying value of base token deposited.
  /// @param recipient The address of receiver.
  /// @return xTokenOut The amount of xToken minted.
  function mintXToken(uint256 baseIn, address recipient) external returns (uint256 xTokenOut);

  /// @notice Redeem fToken and xToken to base tokne.
  /// @param fTokenIn The amount of fToken to redeem.
  /// @param xTokenIn The amount of xToken to redeem.
  /// @param owner The owner of the fToken or xToken.
  /// @param baseOut The amount of underlying value of base token redeemed.
  function redeem(
    uint256 fTokenIn,
    uint256 xTokenIn,
    address owner
  ) external returns (uint256 baseOut);

  /// @notice Settle the nav of base token, fToken and xToken.
  function settle() external;

  /// @notice Transfer some base token to strategy contract.
  /// @param amount The amount of token to transfer.
  function transferToStrategy(uint256 amount) external;

  /// @notice Notify base token profit from strategy contract.
  /// @param amount The amount of base token.
  function notifyStrategyProfit(uint256 amount) external;

  /// @notice Harvest pending rewards to stability pool.
  function harvest() external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IFxUSD {
  /**********
   * Events *
   **********/

  /// @notice Emitted when a new market is added.
  /// @param baseToken The address of base token of the market.
  /// @param mintCap The mint capacity of the market.
  event AddMarket(address indexed baseToken, uint256 mintCap);

  /// @notice Emitted when the mint capacity is updated.
  /// @param baseToken The address of base token of the market.
  /// @param oldCap The value of previous mint capacity.
  /// @param newCap The value of current mint capacity.
  event UpdateMintCap(address indexed baseToken, uint256 oldCap, uint256 newCap);

  /// @notice Emitted when a new rebalance pool is added.
  /// @param baseToken The address of base token of the market.
  /// @param pool The address of the rebalance pool.
  event AddRebalancePool(address indexed baseToken, address indexed pool);

  /// @notice Emitted when a new rebalance pool is removed.
  /// @param baseToken The address of base token of the market.
  /// @param pool The address of the rebalance pool.
  event RemoveRebalancePool(address indexed baseToken, address indexed pool);

  /// @notice Emitted when someone wrap fToken as fxUSD.
  /// @param baseToken The address of base token of the market.
  /// @param owner The address of fToken owner.
  /// @param receiver The address of fxUSD recipient.
  /// @param amount The amount of fxUSD minted.
  event Wrap(address indexed baseToken, address indexed owner, address indexed receiver, uint256 amount);

  /// @notice Emitted when someone unwrap fxUSD as fToken.
  /// @param baseToken The address of base token of the market.
  /// @param owner The address of fxUSD owner.
  /// @param receiver The address of base token recipient.
  /// @param amount The amount of fxUSD burned.
  event Unwrap(address indexed baseToken, address indexed owner, address indexed receiver, uint256 amount);

  /**********
   * Errors *
   **********/

  /// @dev Thrown when someone tries to interact with unsupported market.
  error ErrorUnsupportedMarket();

  /// @dev Thrown when someone tries to interact with unsupported rebalance pool.
  error ErrorUnsupportedRebalancePool();

  /// @dev Thrown when someone tries to interact with market in stability mode.
  error ErrorMarketInStabilityMode();

  /// @dev Thrown when someone tries to interact with market has invalid price.
  error ErrorMarketWithInvalidPrice();

  /// @dev Thrown when someone tries to add a supported market.
  error ErrorMarketAlreadySupported();

  /// @dev Thrown when the total supply of fToken exceed mint capacity.
  error ErrorExceedMintCap();

  /// @dev Thrown when the amount of fToken is not enough for redeem.
  error ErrorInsufficientLiquidity();

  /// @dev Thrown when current is under collateral.
  error ErrorUnderCollateral();

  /// @dev Thrown when the length of two arrays is mismatch.
  error ErrorLengthMismatch();

  /*************************
   * Public View Functions *
   *************************/

  /// @notice Return the list of supported markets.
  function getMarkets() external view returns (address[] memory);

  /// @notice Return the list of supported rebalance pools.
  function getRebalancePools() external view returns (address[] memory);

  /// @notice Return the nav of fxUSD.
  function nav() external view returns (uint256);

  /// @notice Return whether the system is under collateral.
  function isUnderCollateral() external view returns (bool);

  /****************************
   * Public Mutated Functions *
   ****************************/

  /// @notice Wrap fToken to fxUSD.
  /// @param baseToken The address of corresponding base token.
  /// @param amount The amount of fToken to wrap.
  /// @param receiver The address of fxUSD recipient.
  function wrap(
    address baseToken,
    uint256 amount,
    address receiver
  ) external;

  /// @notice Wrap fToken from rebalance pool to fxUSD.
  /// @param pool The address of rebalance pool.
  /// @param amount The amount of fToken to wrap.
  /// @param receiver The address of fxUSD recipient.
  function wrapFrom(
    address pool,
    uint256 amount,
    address receiver
  ) external;

  /// @notice Mint fxUSD with base token.
  /// @param baseToken The address of the base token.
  /// @param amountIn The amount of base token to use.
  /// @param receiver The address of fxUSD recipient.
  /// @param minOut The minimum amount of fxUSD should receive.
  /// @return amountOut The amount of fxUSD received by the receiver.
  function mint(
    address baseToken,
    uint256 amountIn,
    address receiver,
    uint256 minOut
  ) external returns (uint256 amountOut);

  /// @notice Deposit fxUSD to rebalance pool.
  /// @param pool The address of rebalance pool.
  /// @param amount The amount of fxUSD to use.
  /// @param receiver The address of rebalance pool share recipient.
  function earn(
    address pool,
    uint256 amount,
    address receiver
  ) external;

  /// @notice Mint fxUSD with base token and deposit to rebalance pool.
  /// @param pool The address of rebalance pool.
  /// @param amountIn The amount of base token to use.
  /// @param receiver The address of rebalance pool recipient.
  /// @param minOut The minimum amount of rebalance pool shares should receive.
  /// @return amountOut The amount of rebalance pool shares received by the receiver.
  function mintAndEarn(
    address pool,
    uint256 amountIn,
    address receiver,
    uint256 minOut
  ) external returns (uint256 amountOut);

  /// @notice Redeem fxUSD to base token.
  /// @param baseToken The address of the base token.
  /// @param amountIn The amount of fxUSD to redeem.
  /// @param receiver The address of base token recipient.
  /// @param minOut The minimum amount of base token should receive.
  /// @return amountOut The amount of base token received by the receiver.
  /// @return bonusOut The amount of bonus base token received by the receiver.
  function redeem(
    address baseToken,
    uint256 amountIn,
    address receiver,
    uint256 minOut
  ) external returns (uint256 amountOut, uint256 bonusOut);

  /// @notice Redeem fToken from rebalance pool to base token.
  /// @param amountIn The amount of fxUSD to redeem.
  /// @param receiver The address of base token recipient.
  /// @param minOut The minimum amount of base token should receive.
  /// @return amountOut The amount of base token received by the receiver.
  /// @return bonusOut The amount of bonus base token received by the receiver.
  function redeemFrom(
    address pool,
    uint256 amountIn,
    address receiver,
    uint256 minOut
  ) external returns (uint256 amountOut, uint256 bonusOut);

  /// @notice Redeem fxUSD to base token optimally.
  /// @param amountIn The amount of fxUSD to redeem.
  /// @param receiver The address of base token recipient.
  /// @param minOuts The list of minimum amount of base token should receive.
  /// @return baseTokens The list of base token received by the receiver.
  /// @return amountOuts The list of amount of base token received by the receiver.
  /// @return bonusOuts The list of amount of bonus base token received by the receiver.
  function autoRedeem(
    uint256 amountIn,
    address receiver,
    uint256[] memory minOuts
  )
    external
    returns (
      address[] memory baseTokens,
      uint256[] memory amountOuts,
      uint256[] memory bonusOuts
    );
}

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

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ount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amountIn","type":"uint256"},{"internalType":"address","name":"_receiver","type":"address"},{"internalType":"uint256[]","name":"_minOuts","type":"uint256[]"}],"name":"autoRedeem","outputs":[{"internalType":"address[]","name":"_baseTokens","type":"address[]"},{"internalType":"uint256[]","name":"_amountOuts","type":"uint256[]"},{"internalType":"uint256[]","name":"_bonusOuts","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","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":"_pool","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"address","name":"_receiver","type":"address"}],"name":"earn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"eip712Domain","outputs":[{"internalType":"bytes1","name":"fields","type":"bytes1"},{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"version","type":"string"},{"internalType":"uint256","name":"chainId","type":"uint256"},{"internalType":"address","name":"verifyingContract","type":"address"},{"internalType":"bytes32","name":"salt","type":"bytes32"},{"internalType":"uint256[]","name":"extensions","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getMarkets","outputs":[{"internalType":"address[]","name":"_tokens","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRebalancePools","outputs":[{"internalType":"address[]","name":"_pools","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"isUnderCollateral","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"markets","outputs":[{"internalType":"address","name":"fToken","type":"address"},{"internalType":"address","name":"treasury","type":"address"},{"internalType":"address","name":"market","type":"address"},{"internalType":"uint256","name":"mintCap","type":"uint256"},{"internalType":"uint256","name":"managed","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_baseToken","type":"address"},{"internalType":"uint256","name":"_amountIn","type":"uint256"},{"internalType":"address","name":"_receiver","type":"address"},{"internalType":"uint256","name":"_minOut","type":"uint256"}],"name":"mint","outputs":[{"internalType":"uint256","name":"_amountOut","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_pool","type":"address"},{"internalType":"uint256","name":"_amountIn","type":"uint256"},{"internalType":"address","name":"_receiver","type":"address"},{"internalType":"uint256","name":"_minOut","type":"uint256"}],"name":"mintAndEarn","outputs":[{"internalType":"uint256","name":"_amountOut","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"st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