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// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.8.19;

/**
 * solhint-disable private-vars-leading-underscore
 */

import "./SingleAdminAccessControl.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

import "./interfaces/AggregatorV3Interface.sol";
import "./interfaces/IlvlUSD.sol";
import "./interfaces/ILevelMinting.sol";

/**
 * @title Level Minting Contract
 * @notice This contract issues and redeems lvlUSD for/from other accepted stablecoins
 * @dev Changelog: change name to LevelMinting and lvlUSD, update solidity versions
 */
contract LevelMinting is
    ILevelMinting,
    SingleAdminAccessControl,
    ReentrancyGuard
{
    using SafeERC20 for IERC20;
    using EnumerableSet for EnumerableSet.AddressSet;

    /* --------------- CONSTANTS --------------- */

    /// @notice role enabling to disable mint and redeem
    bytes32 private constant GATEKEEPER_ROLE = keccak256("GATEKEEPER_ROLE");

    /// @notice role for minting lvlUSD
    bytes32 private constant MINTER_ROLE = keccak256("MINTER_ROLE");

    /// @notice role for redeeming lvlUSD
    bytes32 private constant REDEEMER_ROLE = keccak256("REDEEMER_ROLE");

    /* --------------- STATE VARIABLES --------------- */

    /// @notice lvlusd stablecoin
    IlvlUSD public immutable lvlusd;

    /// @notice Supported assets
    EnumerableSet.AddressSet internal _supportedAssets;

    /// @notice Redeemable assets
    EnumerableSet.AddressSet internal _redeemableAssets;

    // @notice reserve addresses
    EnumerableSet.AddressSet internal _reserveAddresses;

    /// @notice lvlUSD minted per block
    mapping(uint256 => uint256) public mintedPerBlock;
    /// @notice lvlUSD redeemed per block
    mapping(uint256 => uint256) public redeemedPerBlock;

    /// @notice max minted lvlUSD allowed per block
    uint256 public maxMintPerBlock;
    /// @notice max redeemed lvlUSD allowed per block
    uint256 public maxRedeemPerBlock;

    bool public checkMinterRole = false;
    bool public checkRedeemerRole = false;

    uint24 public constant MAX_COOLDOWN_DURATION = 21 days;
    uint24 public cooldownDuration;

    mapping(address => mapping(address => UserCooldown)) public cooldowns;
    // mapping from collateral asset address to total amount of lvlUSD locked for redemptions
    mapping(address => uint256) public pendingRedemptionlvlUSDAmounts;

    Route _route;

    // collateral token address to chainlink oracle address map
    mapping(address => address) public oracles;
    mapping(address => uint256) public heartbeats;

    // oracle heart beat (used for staleness check)
    // this is the chainlink heartbeat for USDC and USDT
    // other tokens may have different heartbeats, which can be set using setHeartBeat
    uint256 public DEFAULT_HEART_BEAT = 86400;

    /* --------------- MODIFIERS --------------- */

    /// @notice ensure that the already minted lvlUSD in the actual block plus the amount to be minted is below the maxMintPerBlock var
    /// @param mintAmount The lvlUSD amount to be minted
    modifier belowMaxMintPerBlock(uint256 mintAmount) {
        if (mintedPerBlock[block.number] + mintAmount > maxMintPerBlock)
            revert MaxMintPerBlockExceeded();
        _;
    }

    /// @notice ensure that the already redeemed lvlUSD in the actual block plus the amount to be redeemed is below the maxRedeemPerBlock var
    /// @param redeemAmount The lvlUSD amount to be redeemed
    modifier belowMaxRedeemPerBlock(uint256 redeemAmount) {
        if (redeemedPerBlock[block.number] + redeemAmount > maxRedeemPerBlock)
            revert MaxRedeemPerBlockExceeded();
        _;
    }

    modifier onlyMinterWhenEnabled() {
        if (checkMinterRole) {
            _checkRole(MINTER_ROLE);
        }
        _;
    }

    modifier onlyRedeemerWhenEnabled() {
        if (checkRedeemerRole) {
            _checkRole(REDEEMER_ROLE);
        }
        _;
    }

    /// @notice ensure cooldownDuration is zero
    modifier ensureCooldownOff() {
        if (cooldownDuration != 0) revert OperationNotAllowed();
        _;
    }

    /// @notice ensure cooldownDuration is gt 0
    modifier ensureCooldownOn() {
        if (cooldownDuration == 0) revert OperationNotAllowed();
        _;
    }

    /* --------------- CONSTRUCTOR --------------- */

    // Note: It is required that _assets.length == _oracles.length
    // Note: It is required that _reserves.length == _ratios.length
    constructor(
        IlvlUSD _lvlusd,
        address[] memory _assets,
        address[] memory _oracles, // oracle addresses
        address[] memory _reserves,
        uint256[] memory _ratios,
        address _admin,
        uint256 _maxMintPerBlock,
        uint256 _maxRedeemPerBlock
    ) {
        if (address(_lvlusd) == address(0)) revert InvalidlvlUSDAddress();
        if (_assets.length == 0) revert NoAssetsProvided();
        if (_admin == address(0)) revert InvalidZeroAddress();
        if (_assets.length != _oracles.length)
            revert OraclesLengthNotEqualToAssetsLength();

        lvlusd = _lvlusd;

        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);

        for (uint256 i = 0; i < _assets.length; i++) {
            addSupportedAsset(_assets[i]);
        }

        for (uint256 i = 0; i < _assets.length; i++) {
            addOracle(_assets[i], _oracles[i]);
        }

        for (uint256 j = 0; j < _reserves.length; j++) {
            addReserveAddress(_reserves[j]);
        }

        // Set the max mint/redeem limits per block
        _setMaxMintPerBlock(_maxMintPerBlock);
        _setMaxRedeemPerBlock(_maxRedeemPerBlock);

        if (msg.sender != _admin) {
            _grantRole(DEFAULT_ADMIN_ROLE, _admin);
        }

        cooldownDuration = 9 days;

        if (!verifyRatios(_ratios)) {
            revert InvalidRatios();
        }
        _route = Route(_reserves, _ratios);

        emit lvlUSDSet(address(_lvlusd));
    }

    /* --------------- EXTERNAL --------------- */

    /**
     * @notice Mint stablecoins from assets
     * @param order struct containing order details and confirmation from server
     * @param route the addresses to which the collateral should be sent (and ratios describing the amount to send to each address)
     */
    function _mint(
        Order memory order,
        Route memory route
    ) internal nonReentrant belowMaxMintPerBlock(order.lvlusd_amount) {
        require(!(lvlusd.denylisted(msg.sender)));
        if (order.order_type != OrderType.MINT) revert InvalidOrder();
        verifyOrder(order);
        if (!verifyRoute(route, order.order_type)) revert InvalidRoute();
        // Add to the minted amount in this block
        mintedPerBlock[block.number] += order.lvlusd_amount;
        _transferCollateral(
            order.collateral_amount,
            order.collateral_asset,
            order.benefactor,
            route.addresses,
            route.ratios
        );
        lvlusd.mint(order.beneficiary, order.lvlusd_amount);
        emit Mint(
            msg.sender,
            order.benefactor,
            order.beneficiary,
            order.collateral_asset,
            order.collateral_amount,
            order.lvlusd_amount
        );
    }

    function mint(
        Order memory order,
        Route calldata route
    ) external virtual onlyMinterWhenEnabled {
        if (msg.sender != order.benefactor) {
            revert MsgSenderIsNotBenefactor();
        }
        Order memory _order = computeCollateralOrlvlUSDAmount(order);
        _mint(_order, route);
    }

    function mintDefault(
        Order memory order
    ) external virtual onlyMinterWhenEnabled {
        if (msg.sender != order.benefactor) {
            revert MsgSenderIsNotBenefactor();
        }
        Order memory _order = computeCollateralOrlvlUSDAmount(order);
        _mint(_order, _route);
    }

    function setCooldownDuration(
        uint24 newDuration
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        require(
            newDuration <= MAX_COOLDOWN_DURATION,
            "newDuration exceeds MAX_COOLDOWN_DURATION"
        );
        cooldownDuration = newDuration;
    }

    /**
     * @notice Redeem stablecoins for assets
     * @param order struct containing order details and confirmation from server
     */
    function _redeem(
        Order memory order
    ) internal nonReentrant belowMaxRedeemPerBlock(order.lvlusd_amount) {
        // Add to the redeemed amount in this block
        redeemedPerBlock[block.number] += order.lvlusd_amount;

        _transferToBeneficiary(
            order.beneficiary,
            order.collateral_asset,
            order.collateral_amount
        );

        emit Redeem(
            msg.sender,
            order.benefactor,
            order.beneficiary,
            order.collateral_asset,
            order.collateral_amount,
            order.lvlusd_amount
        );
    }

    // Given an order object, computes either the lvlUSD or collateral asset amount
    // using price from chainlink oracle
    // Note: when minting, the price is taken to be min(oracle_price, 1)
    // Note: when redeeming, the price is taken to be max(oracle_price, 1)
    // These ensure that the protocol remains fully collateralized.
    function computeCollateralOrlvlUSDAmount(
        Order memory order
    ) private returns (Order memory) {
        (int price, uint decimals) = getPriceAndDecimals(
            order.collateral_asset
        );
        if (price == 0) {
            revert OraclePriceIsZero();
        }
        Order memory newOrder = Order({
            order_type: order.order_type,
            collateral_asset: order.collateral_asset,
            benefactor: order.benefactor,
            beneficiary: order.beneficiary,
            collateral_amount: order.collateral_amount,
            lvlusd_amount: order.lvlusd_amount
        });

        uint8 collateral_asset_decimals = ERC20(order.collateral_asset)
            .decimals();
        uint8 lvlusd_decimals = lvlusd.decimals();

        if (order.order_type == OrderType.MINT) {
            uint256 new_lvlusd_amount;
            // Note: it is assumed that only stablecoins are used as collateral, which
            // is why we compare the price to $1
            if (uint256(price) < 10 ** decimals) {
                new_lvlusd_amount =
                    (order.collateral_amount *
                        uint256(price) *
                        10 ** (lvlusd_decimals)) /
                    10 ** (decimals) /
                    10 ** (collateral_asset_decimals);
            } else {
                // assume unit price ($1)
                new_lvlusd_amount =
                    (order.collateral_amount * (10 ** (lvlusd_decimals))) /
                    (10 ** (collateral_asset_decimals));
            }
            // ensure that calculated lvlusd amount exceeds the user-specified minimum
            if (new_lvlusd_amount < order.lvlusd_amount) {
                revert MinimumlvlUSDAmountNotMet();
            }
            newOrder.lvlusd_amount = new_lvlusd_amount;
        } else {
            // redeem
            uint256 new_collateral_amount;
            if (uint256(price) > 10 ** decimals) {
                new_collateral_amount =
                    (order.lvlusd_amount *
                        (10 ** (decimals)) *
                        (10 ** (collateral_asset_decimals))) /
                    uint256(price) /
                    (10 ** (lvlusd_decimals));
            } else {
                // assume unit price
                new_collateral_amount =
                    (order.lvlusd_amount *
                        (10 ** (collateral_asset_decimals))) /
                    (10 ** (lvlusd_decimals));
            }
            // ensure that calculated collateral amount exceeds the user-specified minimum
            if (new_collateral_amount < order.collateral_amount) {
                revert MinimumCollateralAmountNotMet();
            }
            newOrder.collateral_amount = new_collateral_amount;
        }
        return newOrder;
    }

    function initiateRedeem(
        Order memory order
    ) external ensureCooldownOn onlyRedeemerWhenEnabled {
        if (order.order_type != OrderType.REDEEM) revert InvalidOrder();

        if (!_redeemableAssets.contains(order.collateral_asset)) {
            revert UnsupportedAsset();
        }
        if (msg.sender != order.benefactor) {
            revert MsgSenderIsNotBenefactor();
        }
        UserCooldown memory newCooldown = UserCooldown({
            cooldownStart: uint104(block.timestamp),
            order: order
        });

        cooldowns[msg.sender][order.collateral_asset] = newCooldown;

        pendingRedemptionlvlUSDAmounts[order.collateral_asset] += order
            .lvlusd_amount;

        // lock lvlUSD in this contract while user waits to redeem collateral
        lvlusd.transferFrom(
            order.benefactor,
            address(this),
            order.lvlusd_amount
        );

        emit RedeemInitiated(
            msg.sender,
            order.collateral_asset,
            order.collateral_amount,
            order.lvlusd_amount
        );
    }

    function completeRedeem(
        address token // collateral
    ) external virtual onlyRedeemerWhenEnabled {
        UserCooldown memory userCooldown = cooldowns[msg.sender][token];
        if (block.timestamp >= userCooldown.cooldownStart + cooldownDuration) {
            userCooldown.cooldownStart = type(uint104).max;
            cooldowns[msg.sender][token] = userCooldown;
            Order memory _order = computeCollateralOrlvlUSDAmount(
                userCooldown.order
            );
            _redeem(_order);
            // burn user-provided lvlUSD that is locked in this contract
            lvlusd.burn(userCooldown.order.lvlusd_amount);
            pendingRedemptionlvlUSDAmounts[
                userCooldown.order.collateral_asset
            ] -= userCooldown.order.lvlusd_amount;
            emit RedeemCompleted(
                msg.sender,
                userCooldown.order.collateral_asset,
                userCooldown.order.collateral_amount,
                userCooldown.order.lvlusd_amount
            );
        } else {
            revert InvalidCooldown();
        }
    }

    function redeem(
        Order memory order
    ) external virtual ensureCooldownOff onlyRedeemerWhenEnabled {
        if (order.order_type != OrderType.REDEEM) revert InvalidOrder();
        if (msg.sender != order.benefactor) {
            revert MsgSenderIsNotBenefactor();
        }
        Order memory _order = computeCollateralOrlvlUSDAmount(order);
        _redeem(_order);
        lvlusd.burnFrom(order.benefactor, order.lvlusd_amount);
    }

    /// @notice Sets the max mintPerBlock limit
    function setMaxMintPerBlock(
        uint256 _maxMintPerBlock
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        _setMaxMintPerBlock(_maxMintPerBlock);
    }

    /// @notice Sets the max redeemPerBlock limit
    function setMaxRedeemPerBlock(
        uint256 _maxRedeemPerBlock
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        _setMaxRedeemPerBlock(_maxRedeemPerBlock);
    }

    /// @notice Disables the mint and redeem
    function disableMintRedeem() external onlyRole(GATEKEEPER_ROLE) {
        _setMaxMintPerBlock(0);
        _setMaxRedeemPerBlock(0);
    }

    /// @notice transfers an asset to a reserve wallet
    function transferToReserve(
        address wallet,
        address asset,
        uint256 amount
    ) external nonReentrant onlyRole(DEFAULT_ADMIN_ROLE) {
        if (wallet == address(0) || !_reserveAddresses.contains(wallet))
            revert InvalidAddress();
        IERC20(asset).safeTransfer(wallet, amount);
        emit ReserveTransfer(wallet, asset, amount);
    }

    /// @notice Removes an asset from the supported assets list
    function removeSupportedAsset(
        address asset
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        if (!_supportedAssets.remove(asset)) revert InvalidAssetAddress();
        emit AssetRemoved(asset);
    }

    function removeRedeemableAssets(
        address asset
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        if (!_redeemableAssets.remove(asset)) revert InvalidAssetAddress();
        emit RedeemableAssetRemoved(asset);
    }

    /// @notice Checks if an asset is supported.
    function isSupportedAsset(address asset) external view returns (bool) {
        return _supportedAssets.contains(asset);
    }

    /// @notice Removes a reserve from the reserve address list
    function removeReserveAddress(
        address reserve
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        if (!_reserveAddresses.remove(reserve)) revert InvalidReserveAddress();
        emit ReserveAddressRemoved(reserve);
    }

    /// @notice Removes the minter role from an account, this can ONLY be executed by the gatekeeper role
    /// @param minter The address to remove the minter role from
    function removeMinterRole(
        address minter
    ) external onlyRole(GATEKEEPER_ROLE) {
        _revokeRole(MINTER_ROLE, minter);
    }

    /// @notice Removes the redeemer role from an account, this can ONLY be executed by the gatekeeper role
    /// @param redeemer The address to remove the redeemer role from
    function removeRedeemerRole(
        address redeemer
    ) external onlyRole(GATEKEEPER_ROLE) {
        _revokeRole(REDEEMER_ROLE, redeemer);
    }

    /* --------------- PUBLIC --------------- */

    function getPriceAndDecimals(
        address collateralToken
    ) public returns (int256, uint) {
        address oracle = oracles[collateralToken];
        if (oracle == address(0)) {
            revert OracleUndefined();
        }
        uint8 decimals = AggregatorV3Interface(oracle).decimals();
        (, int answer, , uint256 updatedAt, ) = AggregatorV3Interface(oracle)
            .latestRoundData();
        require(answer > 0, "invalid price");
        uint256 heartBeat = heartbeats[collateralToken];
        if (heartBeat == 0) {
            heartBeat = DEFAULT_HEART_BEAT;
        }
        require(block.timestamp <= updatedAt + heartBeat, "stale price");
        return (answer, decimals);
    }

    /// @notice Adds an asset to the supported assets list.
    function addSupportedAsset(
        address asset
    ) public onlyRole(DEFAULT_ADMIN_ROLE) {
        if (
            asset == address(0) ||
            asset == address(lvlusd) ||
            !_supportedAssets.add(asset)
        ) {
            revert InvalidAssetAddress();
        }
        _redeemableAssets.add(asset);
        emit AssetAdded(asset);
    }

    function addOracle(
        address collateral,
        address oracle
    ) public onlyRole(DEFAULT_ADMIN_ROLE) {
        oracles[collateral] = oracle;
    }

    function setHeartBeat(
        address collateral,
        uint256 heartBeat
    ) public onlyRole(DEFAULT_ADMIN_ROLE) {
        heartbeats[collateral] = heartBeat;
    }

    /// @notice Adds a reserve to the supported reserves list.
    function addReserveAddress(
        address reserve
    ) public onlyRole(DEFAULT_ADMIN_ROLE) {
        if (
            reserve == address(0) ||
            reserve == address(lvlusd) ||
            !_reserveAddresses.add(reserve)
        ) {
            revert InvalidReserveAddress();
        }
        emit ReserveAddressAdded(reserve);
    }

    /// @notice assert validity of order
    function verifyOrder(
        Order memory order
    ) public view override returns (bool) {
        if (order.beneficiary == address(0)) revert InvalidAmount();
        if (order.collateral_amount == 0) revert InvalidAmount();
        if (order.lvlusd_amount == 0) revert InvalidAmount();
        return true;
    }

    function verifyRatios(uint256[] memory ratios) public view returns (bool) {
        uint total = 0;
        for (uint i = 0; i < ratios.length; i++) {
            total += ratios[i];
        }
        return total == 10_000;
    }

    /// @notice assert validity of route object per type
    function verifyRoute(
        Route memory route,
        OrderType orderType
    ) public view override returns (bool) {
        // routes only used to mint
        if (orderType == OrderType.REDEEM) {
            return true;
        }
        if (route.addresses.length != route.ratios.length) {
            return false;
        }
        if (route.addresses.length == 0) {
            return false;
        }
        for (uint256 i = 0; i < route.addresses.length; ++i) {
            if (
                !_reserveAddresses.contains(route.addresses[i]) ||
                route.addresses[i] == address(0) ||
                route.ratios[i] == 0
            ) {
                return false;
            }
        }
        if (!verifyRatios(route.ratios)) {
            return false;
        }
        return true;
    }

    function setCheckMinterRole(
        bool _check
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        checkMinterRole = _check;
    }

    function setCheckRedeemerRole(
        bool _check
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        checkRedeemerRole = _check;
    }

    function setRoute(
        address[] memory _reserves,
        uint256[] memory _ratios
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        require(
            _reserves.length == _ratios.length,
            "Reserves and ratios must have the same length"
        );
        for (uint256 i = 0; i < _reserves.length; i++) {
            require(
                _reserveAddresses.contains(_reserves[i]),
                "Reserve address not found in _reserveAddresses"
            );
        }
        require(verifyRatios(_ratios), "ratios do not add up to 10,000");
        _route = Route(_reserves, _ratios);
    }

    /* --------------- INTERNAL --------------- */

    /// @notice transfer supported asset to beneficiary address
    function _transferToBeneficiary(
        address beneficiary,
        address asset,
        uint256 amount
    ) internal {
        if (!_redeemableAssets.contains(asset)) revert UnsupportedAsset();
        IERC20(asset).safeTransfer(beneficiary, amount);
    }

    /// @notice transfer supported asset to array of reserve addresses per defined ratio
    function _transferCollateral(
        uint256 amount,
        address asset,
        address benefactor,
        address[] memory addresses,
        uint256[] memory ratios
    ) internal {
        // cannot mint using unsupported asset or native ETH even if it is supported for redemptions
        if (!_supportedAssets.contains(asset)) revert UnsupportedAsset();
        IERC20 token = IERC20(asset);
        uint256 totalTransferred;
        uint256 amountToTransfer;
        for (uint256 i = 0; i < addresses.length - 1; ++i) {
            amountToTransfer = (amount * ratios[i]) / 10_000;
            totalTransferred += amountToTransfer;
            token.safeTransferFrom(benefactor, addresses[i], amountToTransfer);
        }
        token.safeTransferFrom(
            benefactor,
            addresses[addresses.length - 1],
            amount - totalTransferred
        );
    }

    /// @notice Sets the max mintPerBlock limit
    function _setMaxMintPerBlock(uint256 _maxMintPerBlock) internal {
        uint256 oldMaxMintPerBlock = maxMintPerBlock;
        maxMintPerBlock = _maxMintPerBlock;
        emit MaxMintPerBlockChanged(oldMaxMintPerBlock, maxMintPerBlock);
    }

    /// @notice Sets the max redeemPerBlock limit
    function _setMaxRedeemPerBlock(uint256 _maxRedeemPerBlock) internal {
        uint256 oldMaxRedeemPerBlock = maxRedeemPerBlock;
        maxRedeemPerBlock = _maxRedeemPerBlock;
        emit MaxRedeemPerBlockChanged(oldMaxRedeemPerBlock, maxRedeemPerBlock);
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.8.19;

import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/interfaces/IERC5313.sol";
import "./interfaces/ISingleAdminAccessControl.sol";

/**
 * @title SingleAdminAccessControl
 * @notice SingleAdminAccessControl is a contract that provides a single admin role
 * @notice This contract is a simplified alternative to OpenZeppelin's AccessControlDefaultAdminRules
 * @dev Changelog: update solidity versions
 */
abstract contract SingleAdminAccessControl is
    IERC5313,
    ISingleAdminAccessControl,
    AccessControl
{
    address private _currentDefaultAdmin;
    address private _pendingDefaultAdmin;

    modifier notAdmin(bytes32 role) {
        if (role == DEFAULT_ADMIN_ROLE) revert InvalidAdminChange();
        _;
    }

    /// @notice Transfer the admin role to a new address
    /// @notice This can ONLY be executed by the current admin
    /// @param newAdmin address
    function transferAdmin(
        address newAdmin
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        if (newAdmin == msg.sender) revert InvalidAdminChange();
        _pendingDefaultAdmin = newAdmin;
        emit AdminTransferRequested(_currentDefaultAdmin, newAdmin);
    }

    function acceptAdmin() external {
        if (msg.sender != _pendingDefaultAdmin) revert NotPendingAdmin();
        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
    }

    /// @notice grant a role
    /// @notice can only be executed by the current single admin
    /// @notice admin role cannot be granted externally
    /// @param role bytes32
    /// @param account address
    function grantRole(
        bytes32 role,
        address account
    ) public override onlyRole(DEFAULT_ADMIN_ROLE) notAdmin(role) {
        _grantRole(role, account);
    }

    /// @notice revoke a role
    /// @notice can only be executed by the current admin
    /// @notice admin role cannot be revoked
    /// @param role bytes32
    /// @param account address
    function revokeRole(
        bytes32 role,
        address account
    ) public override onlyRole(DEFAULT_ADMIN_ROLE) notAdmin(role) {
        _revokeRole(role, account);
    }

    /// @notice renounce the role of msg.sender
    /// @notice admin role cannot be renounced
    /// @param role bytes32
    /// @param account address
    function renounceRole(
        bytes32 role,
        address account
    ) public virtual override notAdmin(role) {
        super.renounceRole(role, account);
    }

    /**
     * @dev See {IERC5313-owner}.
     */
    function owner() public view virtual returns (address) {
        return _currentDefaultAdmin;
    }

    /**
     * @notice no way to change admin without removing old admin first
     */
    function _grantRole(bytes32 role, address account) internal override {
        if (role == DEFAULT_ADMIN_ROLE) {
            emit AdminTransferred(_currentDefaultAdmin, account);
            _revokeRole(DEFAULT_ADMIN_ROLE, _currentDefaultAdmin);
            _currentDefaultAdmin = account;
            delete _pendingDefaultAdmin;
        }
        super._grantRole(role, account);
    }
}

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

pragma solidity ^0.8.0;

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

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

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/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 EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position 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
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.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 ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

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

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

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the 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 {}
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

// solhint-disable-next-line interface-starts-with-i
interface AggregatorV3Interface {
    function decimals() external view returns (uint8);

    function description() external view returns (string memory);

    function version() external view returns (uint256);

    function getRoundData(
        uint80 _roundId
    )
        external
        view
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        );

    function latestRoundData()
        external
        view
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        );
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.8.19;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol";

interface IlvlUSD is IERC20, IERC20Permit, IERC20Metadata {
    function mint(address _to, uint256 _amount) external;

    function burn(uint256 _amount) external;

    function burnFrom(address account, uint256 amount) external;

    function grantRole(bytes32 role, address account) external;

    function setMinter(address newMinter) external;

    function minter() external returns (address);

    function denylisted(address user) external returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import "./ILevelMintingEvents.sol";

interface ILevelMinting is ILevelMintingEvents {
    enum Role {
        Minter,
        Redeemer
    }

    enum OrderType {
        MINT,
        REDEEM
    }

    enum SignatureType {
        EIP712
    }

    struct Signature {
        SignatureType signature_type;
        bytes signature_bytes;
    }

    struct Route {
        address[] addresses;
        uint256[] ratios;
    }

    struct Order {
        OrderType order_type;
        address benefactor;
        address beneficiary;
        address collateral_asset;
        uint256 collateral_amount;
        uint256 lvlusd_amount;
    }

    struct UserCooldown {
        uint104 cooldownStart;
        Order order;
    }

    error Duplicate();
    error InvalidAddress();
    error InvalidlvlUSDAddress();
    error InvalidZeroAddress();
    error InvalidAssetAddress();
    error InvalidReserveAddress();
    error InvalidOrder();
    error InvalidAffirmedAmount();
    error InvalidAmount();
    error InvalidRoute();
    error InvalidRatios();
    error UnsupportedAsset();
    error NoAssetsProvided();
    error InvalidCooldown();
    error OperationNotAllowed();
    error InvalidNonce();
    error TransferFailed();
    error MaxMintPerBlockExceeded();
    error MaxRedeemPerBlockExceeded();
    error MsgSenderIsNotBenefactor();
    error OracleUndefined();
    error OraclePriceIsZero();
    error MinimumlvlUSDAmountNotMet();
    error MinimumCollateralAmountNotMet();
    error OraclesLengthNotEqualToAssetsLength();

    // function hashOrder(Order calldata order) external view returns (bytes32);

    function verifyOrder(Order calldata order) external view returns (bool);

    function verifyRoute(
        Route calldata route,
        OrderType order_type
    ) external view returns (bool);

    function mint(Order calldata order, Route calldata route) external;

    function initiateRedeem(Order memory order) external;

    function completeRedeem(address token) external;
}

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

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.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 AccessControl is Context, IAccessControl, ERC165 {
    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(IAccessControl).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 ",
                        Strings.toHexString(account),
                        " is missing role ",
                        Strings.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());
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC5313.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface for the Light Contract Ownership Standard.
 *
 * A standardized minimal interface required to identify an account that controls a contract
 *
 * _Available since v4.9._
 */
interface IERC5313 {
    /**
     * @dev Gets the address of the owner.
     */
    function owner() external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

interface ISingleAdminAccessControl {
    error InvalidAdminChange();
    error NotPendingAdmin();

    event AdminTransferred(address indexed oldAdmin, address indexed newAdmin);
    event AdminTransferRequested(
        address indexed oldAdmin,
        address indexed newAdmin
    );
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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 IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

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

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

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

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

import "../IERC20.sol";

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

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

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

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

pragma solidity ^0.8.0;

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

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

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

interface ILevelMintingEvents {
    /// @notice Event emitted when contract receives ETH
    event Received(address, uint256);

    /// @notice Event emitted when lvlUSD is minted
    event Mint(
        address minter,
        address benefactor,
        address beneficiary,
        address indexed collateral_asset,
        uint256 indexed collateral_amount,
        uint256 indexed lvlusd_amount
    );

    /// @notice Event emitted when funds are redeemed
    event Redeem(
        address redeemer,
        address benefactor,
        address beneficiary,
        address indexed collateral_asset,
        uint256 indexed collateral_amount,
        uint256 indexed lvlusd_amount
    );

    /// @notice Event emitted when reserve wallet is added
    event ReserveWalletAdded(address wallet);

    /// @notice Event emitted when a reserve wallet is removed
    event ReserveWalletRemoved(address wallet);

    /// @notice Event emitted when a supported asset is added
    event AssetAdded(address indexed asset);

    /// @notice Event emitted when a supported asset is removed
    event AssetRemoved(address indexed asset);

    /// @notice Event emitted when a redeemable asset is removed
    event RedeemableAssetRemoved(address indexed asset);

    // @notice Event emitted when a reserve address is added
    event ReserveAddressAdded(address indexed reserve);

    // @notice Event emitted when a reserve address is removed
    event ReserveAddressRemoved(address indexed reserve);

    /// @notice Event emitted when assets are moved to reserve provider wallet
    event ReserveTransfer(
        address indexed wallet,
        address indexed asset,
        uint256 amount
    );

    /// @notice Event emitted when lvlUSD is set
    event lvlUSDSet(address indexed lvlUSD);

    /// @notice Event emitted when the max mint per block is changed
    event MaxMintPerBlockChanged(
        uint256 indexed oldMaxMintPerBlock,
        uint256 indexed newMaxMintPerBlock
    );

    /// @notice Event emitted when the max redeem per block is changed
    event MaxRedeemPerBlockChanged(
        uint256 indexed oldMaxRedeemPerBlock,
        uint256 indexed newMaxRedeemPerBlock
    );

    /// @notice Event emitted when a delegated signer is added, enabling it to sign orders on behalf of another address
    event DelegatedSignerAdded(
        address indexed signer,
        address indexed delegator
    );

    /// @notice Event emitted when a delegated signer is removed
    event DelegatedSignerRemoved(
        address indexed signer,
        address indexed delegator
    );

    event RedeemInitiated(
        address user,
        address token,
        uint collateral_amount,
        uint lvlusd_amount
    );

    event RedeemCompleted(
        address user,
        address token,
        uint collateral_amount,
        uint lvlusd_amount
    );
}

// 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 IAccessControl {
    /**
     * @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) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    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 = Math.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(SignedMath.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, Math.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 v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.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 ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// 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 Math {
    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 SignedMath {
    /**
     * @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 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 IERC165 {
    /**
     * @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);
}

{
  "remappings": [
    "ds-test/=lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "aave-v3-core/=lib/aave-v3-core/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "openzeppelin/=lib/openzeppelin-contracts/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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IlvlUSD","name":"_lvlusd","type":"address"},{"internalType":"address[]","name":"_assets","type":"address[]"},{"internalType":"address[]","name":"_oracles","type":"address[]"},{"internalType":"address[]","name":"_reserves","type":"address[]"},{"internalType":"uint256[]","name":"_ratios","type":"uint256[]"},{"internalType":"address","name":"_admin","type":"address"},{"internalType":"uint256","name":"_maxMintPerBlock","type":"uint256"},{"internalType":"uint256","name":"_maxRedeemPerBlock","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"Duplicate","type":"error"},{"inputs":[],"name":"InvalidAddress","type":"error"},{"inputs":[],"name":"InvalidAdminChange","type":"error"},{"inputs":[],"name":"InvalidAffirmedAmount","type":"error"},{"inputs":[],"name":"InvalidAmount","type":"error"},{"inputs":[],"name":"InvalidAssetAddress","type":"error"},{"inputs":[],"name":"InvalidCooldown","type":"error"},{"inputs":[],"name":"InvalidNonce","type":"error"},{"inputs":[],"name":"InvalidOrder","type":"error"},{"inputs":[],"name":"InvalidRatios","type":"error"},{"inputs":[],"name":"InvalidReserveAddress","type":"error"},{"inputs":[],"name":"InvalidRoute","type":"error"},{"inputs":[],"name":"InvalidZeroAddress","type":"error"},{"inputs":[],"name":"InvalidlvlUSDAddress","type":"error"},{"inputs":[],"name":"MaxMintPerBlockExceeded","type":"error"},{"inputs":[],"name":"MaxRedeemPerBlockExceeded","type":"error"},{"inputs":[],"name":"MinimumCollateralAmountNotMet","type":"error"},{"inputs":[],"name":"MinimumlvlUSDAmountNotMet","type":"error"},{"inputs":[],"name":"MsgSenderIsNotBenefactor","type":"error"},{"inputs":[],"name":"NoAssetsProvided","type":"error"},{"inputs":[],"name":"NotPendingAdmin","type":"error"},{"inputs":[],"name":"OperationNotAllowed","type":"error"},{"inputs":[],"name":"OraclePriceIsZero","type":"error"},{"inputs":[],"name":"OracleUndefined","type":"error"},{"inputs":[],"name":"OraclesLengthNotEqualToAssetsLength","type":"error"},{"inputs":[],"name":"TransferFailed","type":"error"},{"inputs":[],"name":"UnsupportedAsset","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldAdmin","type":"address"},{"indexed":true,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminTransferRequested","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldAdmin","type":"address"},{"indexed":true,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"asset","type":"address"}],"name":"AssetAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"asset","type":"address"}],"name":"AssetRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"signer","type":"address"},{"indexed":true,"internalType":"address","name":"delegator","type":"address"}],"name":"DelegatedSignerAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"signer","type":"address"},{"indexed":true,"internalType":"address","name":"delegator","type":"address"}],"name":"DelegatedSignerRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"oldMaxMintPerBlock","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"newMaxMintPerBlock","type":"uint256"}],"name":"MaxMintPerBlockChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"oldMaxRedeemPerBlock","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"newMaxRedeemPerBlock","type":"uint256"}],"name":"MaxRedeemPerBlockChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"minter","type":"address"},{"indexed":false,"internalType":"address","name":"benefactor","type":"address"},{"indexed":false,"internalType":"address","name":"beneficiary","type":"address"},{"indexed":true,"internalType":"address","name":"collateral_asset","type":"address"},{"indexed":true,"internalType":"uint256","name":"collateral_amount","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"lvlusd_amount","type":"uint256"}],"name":"Mint","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"","type":"address"},{"indexed":false,"internalType":"uint256","name":"","type":"uint256"}],"name":"Received","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"redeemer","type":"address"},{"indexed":false,"internalType":"address","name":"benefactor","type":"address"},{"indexed":false,"internalType":"address","name":"beneficiary","type":"address"},{"indexed":true,"internalType":"address","name":"collateral_asset","type":"address"},{"indexed":true,"internalType":"uint256","name":"collateral_amount","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"lvlusd_amount","type":"uint256"}],"name":"Redeem","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"collateral_amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"lvlusd_amount","type":"uint256"}],"name":"RedeemCompleted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"collateral_amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"lvlusd_amount","type":"uint256"}],"name":"RedeemInitiated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"asset","type":"address"}],"name":"RedeemableAssetRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"reserve","type":"address"}],"name":"ReserveAddressAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"reserve","type":"address"}],"name":"ReserveAddressRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"wallet","type":"address"},{"indexed":true,"internalType":"address","name":"asset","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"ReserveTransfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"wallet","type":"address"}],"name":"ReserveWalletAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"wallet","type":"address"}],"name":"ReserveWalletRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"lvlUSD","type":"address"}],"name":"lvlUSDSet","type":"event"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_HEART_BEAT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_COOLDOWN_DURATION","outputs":[{"internalType":"uint24","name":"","type":"uint24"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"acceptAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"collateral","type":"address"},{"internalType":"address","name":"oracle","type":"address"}],"name":"addOracle","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"reserve","type":"address"}],"name":"addReserveAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"addSupportedAsset","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"checkMinterRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"checkRedeemerRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"completeRedeem","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"cooldownDuration","outputs":[{"internalType":"uint24","name":"","type":"uint24"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"cooldowns","outputs":[{"internalType":"uint104","name":"cooldownStart","type":"uint104"},{"components":[{"internalType":"enum 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ILevelMinting.OrderType","name":"order_type","type":"uint8"},{"internalType":"address","name":"benefactor","type":"address"},{"internalType":"address","name":"beneficiary","type":"address"},{"internalType":"address","name":"collateral_asset","type":"address"},{"internalType":"uint256","name":"collateral_amount","type":"uint256"},{"internalType":"uint256","name":"lvlusd_amount","type":"uint256"}],"internalType":"struct ILevelMinting.Order","name":"order","type":"tuple"}],"name":"redeem","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"redeemedPerBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"minter","type":"address"}],"name":"removeMinterRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"removeRedeemableAssets","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"redeemer","type":"address"}],"name":"removeRedeemerRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"reserve","type":"address"}],"name":"removeReserveAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"removeSupportedAsset","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_check","type":"bool"}],"name":"setCheckMinterRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_check","type":"bool"}],"name":"setCheckRedeemerRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint24","name":"newDuration","type":"uint24"}],"name":"setCooldownDuration","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"collateral","type":"address"},{"internalType":"uint256","name":"heartBeat","type":"uint256"}],"name":"setHeartBeat","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxMintPerBlock","type":"uint256"}],"name":"setMaxMintPerBlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxRedeemPerBlock","type":"uint256"}],"name":"setMaxRedeemPerBlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_reserves","type":"address[]"},{"internalType":"uint256[]","name":"_ratios","type":"uint256[]"}],"name":"setRoute","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"transferAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"wallet","type":"address"},{"internalType":"address","name":"asset","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferToReserve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"enum ILevelMinting.OrderType","name":"order_type","type":"uint8"},{"internalType":"address","name":"benefactor","type":"address"},{"internalType":"address","name":"beneficiary","type":"address"},{"internalType":"address","name":"collateral_asset","type":"address"},{"internalType":"uint256","name":"collateral_amount","type":"uint256"},{"internalType":"uint256","name":"lvlusd_amount","type":"uint256"}],"internalType":"struct ILevelMinting.Order","name":"order","type":"tuple"}],"name":"verifyOrder","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"ratios","type":"uint256[]"}],"name":"verifyRatios","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address[]","name":"addresses","type":"address[]"},{"internalType":"uint256[]","name":"ratios","type":"uint256[]"}],"internalType":"struct ILevelMinting.Route","name":"route","type":"tuple"},{"internalType":"enum ILevelMinting.OrderType","name":"orderType","type":"uint8"}],"name":"verifyRoute","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]

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0000000000000000000000007c1156e515aa1a2e851674120074968c905aaf370000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000016000000000000000000000000000000000000000000000000000000000000001c000000000000000000000000000000000000000000000000000000000000002000000000000000000000000005b5004f1bc12c66f94782070032a6eadc6821a3e00000000000000000000000000000000000000000000152d02c7e14af680000000000000000000000000000000000000000000000000152d02c7e14af68000000000000000000000000000000000000000000000000000000000000000000002000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec7000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb4800000000000000000000000000000000000000000000000000000000000000020000000000000000000000003e7d1eab13ad0104d2750b8863b489d65364e32d0000000000000000000000008fffffd4afb6115b954bd326cbe7b4ba576818f6000000000000000000000000000000000000000000000000000000000000000100000000000000000000000070d544f75c2228d68ee04bc63e6e4bae8f31fcef00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000002710

-----Decoded View---------------
Arg [0] : _lvlusd (address): 0x7C1156E515aA1A2E851674120074968C905aAF37
Arg [1] : _assets (address[]): 0xdAC17F958D2ee523a2206206994597C13D831ec7,0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
Arg [2] : _oracles (address[]): 0x3E7d1eAB13ad0104d2750B8863b489D65364e32D,0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6
Arg [3] : _reserves (address[]): 0x70D544F75c2228D68EE04BC63e6e4Bae8F31fCEF
Arg [4] : _ratios (uint256[]): 10000
Arg [5] : _admin (address): 0x5b5004f1bC12C66F94782070032a6eAdC6821a3e
Arg [6] : _maxMintPerBlock (uint256): 100000000000000000000000
Arg [7] : _maxRedeemPerBlock (uint256): 100000000000000000000000

-----Encoded View---------------
18 Constructor Arguments found :
Arg [0] : 0000000000000000000000007c1156e515aa1a2e851674120074968c905aaf37
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000160
Arg [3] : 00000000000000000000000000000000000000000000000000000000000001c0
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000200
Arg [5] : 0000000000000000000000005b5004f1bc12c66f94782070032a6eadc6821a3e
Arg [6] : 00000000000000000000000000000000000000000000152d02c7e14af6800000
Arg [7] : 00000000000000000000000000000000000000000000152d02c7e14af6800000
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [9] : 000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec7
Arg [10] : 000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [12] : 0000000000000000000000003e7d1eab13ad0104d2750b8863b489d65364e32d
Arg [13] : 0000000000000000000000008fffffd4afb6115b954bd326cbe7b4ba576818f6
Arg [14] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [15] : 00000000000000000000000070d544f75c2228d68ee04bc63e6e4bae8f31fcef
Arg [16] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [17] : 0000000000000000000000000000000000000000000000000000000000002710