Contract

// SPDX-License-Identifier: BSL-1.1
pragma solidity 0.8.9;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "../libraries/external/FullMath.sol";
import "../libraries/ExceptionsLibrary.sol";
import "../interfaces/vaults/IERC20RootVaultGovernance.sol";
import "../interfaces/vaults/IERC20RootVault.sol";
import "../interfaces/utils/ILpCallback.sol";
import "../utils/ERC20Token.sol";
import "./AggregateVault.sol";
import "../interfaces/utils/IERC20RootVaultHelper.sol";

/// @notice Contract that mints and burns LP tokens in exchange for ERC20 liquidity.
contract ERC20RootVault is IERC20RootVault, ERC20Token, ReentrancyGuard, AggregateVault {
    using SafeERC20 for IERC20;
    using EnumerableSet for EnumerableSet.AddressSet;

    /// @inheritdoc IERC20RootVault
    uint64 public lastFeeCharge;
    /// @inheritdoc IERC20RootVault
    uint64 public totalWithdrawnAmountsTimestamp;
    /// @inheritdoc IERC20RootVault
    uint256[] public totalWithdrawnAmounts;
    /// @inheritdoc IERC20RootVault
    uint256 public lpPriceHighWaterMarkD18;
    EnumerableSet.AddressSet private _depositorsAllowlist;
    IERC20RootVaultHelper public helper;

    // -------------------  EXTERNAL, VIEW  -------------------
    /// @inheritdoc IERC20RootVault
    function depositorsAllowlist() external view returns (address[] memory) {
        return _depositorsAllowlist.values();
    }

    /// @inheritdoc IERC165
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override(IERC165, AggregateVault)
        returns (bool)
    {
        return super.supportsInterface(interfaceId) || type(IERC20RootVault).interfaceId == interfaceId;
    }

    // -------------------  EXTERNAL, MUTATING  -------------------
    /// @inheritdoc IERC20RootVault
    function addDepositorsToAllowlist(address[] calldata depositors) external {
        _requireAtLeastStrategy();
        for (uint256 i = 0; i < depositors.length; i++) {
            _depositorsAllowlist.add(depositors[i]);
        }
    }

    /// @inheritdoc IERC20RootVault
    function removeDepositorsFromAllowlist(address[] calldata depositors) external {
        _requireAtLeastStrategy();
        for (uint256 i = 0; i < depositors.length; i++) {
            _depositorsAllowlist.remove(depositors[i]);
        }
    }

    /// @inheritdoc IERC20RootVault
    function initialize(
        uint256 nft_,
        address[] memory vaultTokens_,
        address strategy_,
        uint256[] memory subvaultNfts_,
        IERC20RootVaultHelper helper_
    ) external {
        _initialize(vaultTokens_, nft_, strategy_, subvaultNfts_);
        _initERC20(_getTokenName(bytes("Mellow Lp Token "), nft_), _getTokenName(bytes("MLP"), nft_));
        uint256 len = vaultTokens_.length;
        totalWithdrawnAmounts = new uint256[](len);
        lastFeeCharge = uint64(block.timestamp);
        helper = helper_;
    }

    /// @inheritdoc IERC20RootVault
    function deposit(
        uint256[] memory tokenAmounts,
        uint256 minLpTokens,
        bytes memory vaultOptions
    ) external nonReentrant returns (uint256[] memory actualTokenAmounts) {
        require(
            !IERC20RootVaultGovernance(address(_vaultGovernance)).operatorParams().disableDeposit,
            ExceptionsLibrary.FORBIDDEN
        );
        address[] memory tokens = _vaultTokens;
        uint256 supply = totalSupply;
        if (supply == 0) {
            for (uint256 i = 0; i < tokens.length; ++i) {
                require(tokenAmounts[i] >= 10 * _pullExistentials[i], ExceptionsLibrary.LIMIT_UNDERFLOW);
                require(
                    tokenAmounts[i] <= _pullExistentials[i] * _pullExistentials[i],
                    ExceptionsLibrary.LIMIT_OVERFLOW
                );
            }
        }
        (uint256[] memory minTvl, uint256[] memory maxTvl) = tvl();
        uint256 thisNft = _nft;
        _chargeFees(thisNft, minTvl, supply, tokens);
        supply = totalSupply;
        IERC20RootVaultGovernance.DelayedStrategyParams memory delayedStrategyParams = IERC20RootVaultGovernance(
            address(_vaultGovernance)
        ).delayedStrategyParams(thisNft);
        require(
            !delayedStrategyParams.privateVault || _depositorsAllowlist.contains(msg.sender),
            ExceptionsLibrary.FORBIDDEN
        );
        uint256 preLpAmount;
        uint256[] memory normalizedAmounts = new uint256[](tokenAmounts.length);
        {
            bool isSignificantTvl;
            (preLpAmount, isSignificantTvl) = _getLpAmount(maxTvl, tokenAmounts, supply);
            for (uint256 i = 0; i < tokens.length; ++i) {
                normalizedAmounts[i] = _getNormalizedAmount(
                    maxTvl[i],
                    tokenAmounts[i],
                    preLpAmount,
                    supply,
                    isSignificantTvl,
                    _pullExistentials[i]
                );
                IERC20(tokens[i]).safeTransferFrom(msg.sender, address(this), normalizedAmounts[i]);
            }
        }
        actualTokenAmounts = _push(normalizedAmounts, vaultOptions);
        (uint256 lpAmount, ) = _getLpAmount(maxTvl, actualTokenAmounts, supply);
        require(lpAmount >= minLpTokens, ExceptionsLibrary.LIMIT_UNDERFLOW);
        require(lpAmount != 0, ExceptionsLibrary.VALUE_ZERO);
        IERC20RootVaultGovernance.StrategyParams memory params = IERC20RootVaultGovernance(address(_vaultGovernance))
            .strategyParams(thisNft);
        require(lpAmount + balanceOf[msg.sender] <= params.tokenLimitPerAddress, ExceptionsLibrary.LIMIT_OVERFLOW);
        require(lpAmount + supply <= params.tokenLimit, ExceptionsLibrary.LIMIT_OVERFLOW);
        // lock tokens on first deposit
        if (supply == 0) {
            _mint(address(0), lpAmount);
        } else {
            _mint(msg.sender, lpAmount);
        }

        for (uint256 i = 0; i < _vaultTokens.length; ++i) {
            if (normalizedAmounts[i] > actualTokenAmounts[i]) {
                IERC20(_vaultTokens[i]).safeTransfer(msg.sender, normalizedAmounts[i] - actualTokenAmounts[i]);
            }
        }

        if (delayedStrategyParams.depositCallbackAddress != address(0)) {
            try ILpCallback(delayedStrategyParams.depositCallbackAddress).depositCallback() {} catch Error(
                string memory reason
            ) {
                emit DepositCallbackLog(reason);
            } catch {
                emit DepositCallbackLog("callback failed without reason");
            }
        }

        emit Deposit(msg.sender, _vaultTokens, actualTokenAmounts, lpAmount);
    }

    /// @inheritdoc IERC20RootVault
    function withdraw(
        address to,
        uint256 lpTokenAmount,
        uint256[] memory minTokenAmounts,
        bytes[] memory vaultsOptions
    ) external nonReentrant returns (uint256[] memory actualTokenAmounts) {
        uint256 supply = totalSupply;
        require(supply > 0, ExceptionsLibrary.VALUE_ZERO);
        address[] memory tokens = _vaultTokens;
        uint256[] memory tokenAmounts = new uint256[](_vaultTokens.length);
        (uint256[] memory minTvl, ) = tvl();
        _chargeFees(_nft, minTvl, supply, tokens);
        supply = totalSupply;
        uint256 balance = balanceOf[msg.sender];
        if (lpTokenAmount > balance) {
            lpTokenAmount = balance;
        }
        for (uint256 i = 0; i < tokens.length; ++i) {
            tokenAmounts[i] = FullMath.mulDiv(lpTokenAmount, minTvl[i], supply);
        }
        actualTokenAmounts = _pull(address(this), tokenAmounts, vaultsOptions);
        // we are draining balance
        // if no sufficent amounts rest
        bool sufficientAmountRest = false;
        for (uint256 i = 0; i < tokens.length; ++i) {
            require(actualTokenAmounts[i] >= minTokenAmounts[i], ExceptionsLibrary.LIMIT_UNDERFLOW);
            if (FullMath.mulDiv(balance, minTvl[i], supply) >= _pullExistentials[i] + actualTokenAmounts[i]) {
                sufficientAmountRest = true;
            }
            if (actualTokenAmounts[i] != 0) {
                IERC20(tokens[i]).safeTransfer(to, actualTokenAmounts[i]);
            }
        }
        _updateWithdrawnAmounts(actualTokenAmounts);
        if (sufficientAmountRest) {
            _burn(msg.sender, lpTokenAmount);
        } else {
            _burn(msg.sender, balance);
        }

        uint256 thisNft = _nft;
        IERC20RootVaultGovernance.DelayedStrategyParams memory delayedStrategyParams = IERC20RootVaultGovernance(
            address(_vaultGovernance)
        ).delayedStrategyParams(thisNft);

        if (delayedStrategyParams.withdrawCallbackAddress != address(0)) {
            try ILpCallback(delayedStrategyParams.withdrawCallbackAddress).withdrawCallback() {} catch Error(
                string memory reason
            ) {
                emit WithdrawCallbackLog(reason);
            } catch {
                emit WithdrawCallbackLog("callback failed without reason");
            }
        }

        emit Withdraw(msg.sender, _vaultTokens, actualTokenAmounts, lpTokenAmount);
    }

    // -------------------  INTERNAL, VIEW  -------------------

    function _getLpAmount(
        uint256[] memory tvl_,
        uint256[] memory amounts,
        uint256 supply
    ) internal view returns (uint256 lpAmount, bool isSignificantTvl) {
        if (supply == 0) {
            // On init lpToken = max(tokenAmounts)
            for (uint256 i = 0; i < tvl_.length; ++i) {
                if (amounts[i] > lpAmount) {
                    lpAmount = amounts[i];
                }
            }
            return (lpAmount, false);
        }
        uint256 tvlsLength = tvl_.length;
        bool isLpAmountUpdated = false;
        uint256[] memory pullExistentials = _pullExistentials;
        for (uint256 i = 0; i < tvlsLength; ++i) {
            if (tvl_[i] < pullExistentials[i]) {
                continue;
            }

            uint256 tokenLpAmount = FullMath.mulDiv(amounts[i], supply, tvl_[i]);
            // take min of meaningful tokenLp amounts
            if ((tokenLpAmount < lpAmount) || (isLpAmountUpdated == false)) {
                isLpAmountUpdated = true;
                lpAmount = tokenLpAmount;
            }
        }
        isSignificantTvl = isLpAmountUpdated;
        // in case of almost zero tvl for all tokens -> do the same with supply == 0
        if (!isSignificantTvl) {
            for (uint256 i = 0; i < tvl_.length; ++i) {
                if (amounts[i] > lpAmount) {
                    lpAmount = amounts[i];
                }
            }
        }
    }

    function _getNormalizedAmount(
        uint256 tvl_,
        uint256 amount,
        uint256 lpAmount,
        uint256 supply,
        bool isSignificantTvl,
        uint256 existentialsAmount
    ) internal pure returns (uint256) {
        if (supply == 0 || !isSignificantTvl) {
            // skip normalization on init
            return amount;
        }

        if (tvl_ < existentialsAmount) {
            // use zero-normalization when all tvls are dust-like
            return 0;
        }

        // normalize amount
        uint256 res = FullMath.mulDiv(tvl_, lpAmount, supply);
        if (res > amount) {
            res = amount;
        }

        return res;
    }

    function _requireAtLeastStrategy() internal view {
        uint256 nft_ = _nft;
        IVaultGovernance.InternalParams memory internalParams = _vaultGovernance.internalParams();
        require(
            (internalParams.protocolGovernance.isAdmin(msg.sender) ||
                internalParams.registry.getApproved(nft_) == msg.sender ||
                (internalParams.registry.ownerOf(nft_) == msg.sender)),
            ExceptionsLibrary.FORBIDDEN
        );
    }

    function _getTokenName(bytes memory prefix, uint256 nft_) internal pure returns (string memory) {
        bytes memory number = bytes(Strings.toString(nft_));
        return string(abi.encodePacked(prefix, number));
    }

    // -------------------  INTERNAL, MUTATING  -------------------

    /// @dev we are charging fees on the deposit / withdrawal
    /// fees are charged before the tokens transfer and change the balance of the lp tokens
    function _chargeFees(
        uint256 thisNft,
        uint256[] memory tvls,
        uint256 supply,
        address[] memory tokens
    ) internal {
        IERC20RootVaultGovernance vg = IERC20RootVaultGovernance(address(_vaultGovernance));
        uint256 elapsed = block.timestamp - uint256(lastFeeCharge);
        IERC20RootVaultGovernance.DelayedProtocolParams memory delayedProtocolParams = vg.delayedProtocolParams();
        if (elapsed < delayedProtocolParams.managementFeeChargeDelay) {
            return;
        }
        lastFeeCharge = uint64(block.timestamp);
        // don't charge on initial deposit
        if (supply == 0) {
            return;
        }
        {
            bool needSkip = true;
            uint256[] memory pullExistentials = _pullExistentials;
            for (uint256 i = 0; i < pullExistentials.length; ++i) {
                if (tvls[i] >= pullExistentials[i]) {
                    needSkip = false;
                    break;
                }
            }
            if (needSkip) {
                return;
            }
        }
        IERC20RootVaultGovernance.DelayedStrategyParams memory strategyParams = vg.delayedStrategyParams(thisNft);
        uint256 protocolFee = vg.delayedProtocolPerVaultParams(thisNft).protocolFee;
        address protocolTreasury = vg.internalParams().protocolGovernance.protocolTreasury();
        _chargeManagementFees(
            strategyParams.managementFee,
            protocolFee,
            strategyParams.strategyTreasury,
            protocolTreasury,
            elapsed,
            supply
        );

        _chargePerformanceFees(
            supply,
            tvls,
            strategyParams.performanceFee,
            strategyParams.strategyPerformanceTreasury,
            tokens,
            delayedProtocolParams.oracle
        );
    }

    function _chargeManagementFees(
        uint256 managementFee,
        uint256 protocolFee,
        address strategyTreasury,
        address protocolTreasury,
        uint256 elapsed,
        uint256 lpSupply
    ) internal {
        if (managementFee > 0) {
            uint256 toMint = FullMath.mulDiv(
                managementFee * elapsed,
                lpSupply,
                CommonLibrary.YEAR * CommonLibrary.DENOMINATOR
            );
            _mint(strategyTreasury, toMint);
            emit ManagementFeesCharged(strategyTreasury, managementFee, toMint);
        }
        if (protocolFee > 0) {
            uint256 toMint = FullMath.mulDiv(
                protocolFee * elapsed,
                lpSupply,
                CommonLibrary.YEAR * CommonLibrary.DENOMINATOR
            );
            _mint(protocolTreasury, toMint);
            emit ProtocolFeesCharged(protocolTreasury, protocolFee, toMint);
        }
    }

    function _chargePerformanceFees(
        uint256 baseSupply,
        uint256[] memory baseTvls,
        uint256 performanceFee,
        address treasury,
        address[] memory tokens,
        IOracle oracle
    ) internal {
        if ((performanceFee == 0) || (baseSupply == 0)) {
            return;
        }
        uint256 tvlToken0 = helper.getTvlToken0(baseTvls, tokens, oracle);
        uint256 lpPriceD18 = FullMath.mulDiv(tvlToken0, CommonLibrary.D18, baseSupply);
        uint256 hwmsD18 = lpPriceHighWaterMarkD18;
        if (lpPriceD18 <= hwmsD18) {
            return;
        }
        uint256 toMint;
        if (hwmsD18 > 0) {
            toMint = FullMath.mulDiv(baseSupply, lpPriceD18 - hwmsD18, hwmsD18);
            toMint = FullMath.mulDiv(toMint, performanceFee, CommonLibrary.DENOMINATOR);
            _mint(treasury, toMint);
        }
        lpPriceHighWaterMarkD18 = lpPriceD18;
        emit PerformanceFeesCharged(treasury, performanceFee, toMint);
    }

    function _updateWithdrawnAmounts(uint256[] memory tokenAmounts) internal {
        uint256[] memory withdrawn = new uint256[](tokenAmounts.length);
        uint64 timestamp = uint64(block.timestamp);
        IProtocolGovernance protocolGovernance = _vaultGovernance.internalParams().protocolGovernance;
        if (timestamp != totalWithdrawnAmountsTimestamp) {
            totalWithdrawnAmountsTimestamp = timestamp;
        } else {
            for (uint256 i = 0; i < tokenAmounts.length; i++) {
                withdrawn[i] = totalWithdrawnAmounts[i];
            }
        }
        for (uint256 i = 0; i < tokenAmounts.length; i++) {
            withdrawn[i] += tokenAmounts[i];
            require(
                withdrawn[i] <= protocolGovernance.withdrawLimit(_vaultTokens[i]),
                ExceptionsLibrary.LIMIT_OVERFLOW
            );
            totalWithdrawnAmounts[i] = withdrawn[i];
        }
    }

    // --------------------------  EVENTS  --------------------------

    /// @notice Emitted when management fees are charged
    /// @param treasury Treasury receiver of the fee
    /// @param feeRate Fee percent applied denominated in 10 ** 9
    /// @param amount Amount of lp token minted
    event ManagementFeesCharged(address indexed treasury, uint256 feeRate, uint256 amount);

    /// @notice Emitted when protocol fees are charged
    /// @param treasury Treasury receiver of the fee
    /// @param feeRate Fee percent applied denominated in 10 ** 9
    /// @param amount Amount of lp token minted
    event ProtocolFeesCharged(address indexed treasury, uint256 feeRate, uint256 amount);

    /// @notice Emitted when performance fees are charged
    /// @param treasury Treasury receiver of the fee
    /// @param feeRate Fee percent applied denominated in 10 ** 9
    /// @param amount Amount of lp token minted
    event PerformanceFeesCharged(address indexed treasury, uint256 feeRate, uint256 amount);

    /// @notice Emitted when liquidity is deposited
    /// @param from The source address for the liquidity
    /// @param tokens ERC20 tokens deposited
    /// @param actualTokenAmounts Token amounts deposited
    /// @param lpTokenMinted LP tokens received by the liquidity provider
    event Deposit(address indexed from, address[] tokens, uint256[] actualTokenAmounts, uint256 lpTokenMinted);

    /// @notice Emitted when liquidity is withdrawn
    /// @param from The source address for the liquidity
    /// @param tokens ERC20 tokens withdrawn
    /// @param actualTokenAmounts Token amounts withdrawn
    /// @param lpTokenBurned LP tokens burned from the liquidity provider
    event Withdraw(address indexed from, address[] tokens, uint256[] actualTokenAmounts, uint256 lpTokenBurned);

    /// @notice Emitted when callback in deposit failed
    /// @param reason Error reason
    event DepositCallbackLog(string reason);

    /// @notice Emitted when callback in withdraw failed
    /// @param reason Error reason
    event WithdrawCallbackLog(string reason);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (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 v4.4.0 (access/IAccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
 */
interface IAccessControlEnumerable is IAccessControl {
    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) external view returns (address);

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (proxy/Clones.sol)

pragma solidity ^0.8.0;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
 * deploying minimal proxy contracts, also known as "clones".
 *
 * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
 * > a minimal bytecode implementation that delegates all calls to a known, fixed address.
 *
 * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
 * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
 * deterministic method.
 *
 * _Available since v3.4._
 */
library Clones {
    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create opcode, which should never revert.
     */
    function clone(address implementation) internal returns (address instance) {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create(0, ptr, 0x37)
        }
        require(instance != address(0), "ERC1167: create failed");
    }

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create2 opcode and a `salt` to deterministically deploy
     * the clone. Using the same `implementation` and `salt` multiple time will revert, since
     * the clones cannot be deployed twice at the same address.
     */
    function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create2(0, ptr, 0x37, salt)
        }
        require(instance != address(0), "ERC1167: create2 failed");
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt,
        address deployer
    ) internal pure returns (address predicted) {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000)
            mstore(add(ptr, 0x38), shl(0x60, deployer))
            mstore(add(ptr, 0x4c), salt)
            mstore(add(ptr, 0x6c), keccak256(ptr, 0x37))
            predicted := keccak256(add(ptr, 0x37), 0x55)
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(address implementation, bytes32 salt)
        internal
        view
        returns (address predicted)
    {
        return predictDeterministicAddress(implementation, salt, address(this));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (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() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

        _;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

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

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

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

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (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 v4.4.0 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/Address.sol)

pragma solidity ^0.8.0;

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

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

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

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

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

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

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

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

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

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

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/Strings.sol)

pragma solidity ^0.8.0;

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

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

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (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 v4.4.0 (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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/structs/EnumerableSet.sol)

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.
 *
 * ```
 * 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.
 */
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) {
        return _values(set._inner);
    }

    // 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;

        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 on 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;

        assembly {
            result := store
        }

        return result;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "./utils/IDefaultAccessControl.sol";
import "./IUnitPricesGovernance.sol";

interface IProtocolGovernance is IDefaultAccessControl, IUnitPricesGovernance {
    /// @notice CommonLibrary protocol params.
    /// @param maxTokensPerVault Max different token addresses that could be managed by the vault
    /// @param governanceDelay The delay (in secs) that must pass before setting new pending params to commiting them
    /// @param protocolTreasury The address that collects protocolFees, if protocolFee is not zero
    /// @param forceAllowMask If a permission bit is set in this mask it forces all addresses to have this permission as true
    /// @param withdrawLimit Withdraw limit (in unit prices, i.e. usd)
    struct Params {
        uint256 maxTokensPerVault;
        uint256 governanceDelay;
        address protocolTreasury;
        uint256 forceAllowMask;
        uint256 withdrawLimit;
    }

    // -------------------  EXTERNAL, VIEW  -------------------

    /// @notice Timestamp after which staged granted permissions for the given address can be committed.
    /// @param target The given address
    /// @return Zero if there are no staged permission grants, timestamp otherwise
    function stagedPermissionGrantsTimestamps(address target) external view returns (uint256);

    /// @notice Staged granted permission bitmask for the given address.
    /// @param target The given address
    /// @return Bitmask
    function stagedPermissionGrantsMasks(address target) external view returns (uint256);

    /// @notice Permission bitmask for the given address.
    /// @param target The given address
    /// @return Bitmask
    function permissionMasks(address target) external view returns (uint256);

    /// @notice Timestamp after which staged pending protocol parameters can be committed
    /// @return Zero if there are no staged parameters, timestamp otherwise.
    function stagedParamsTimestamp() external view returns (uint256);

    /// @notice Staged pending protocol parameters.
    function stagedParams() external view returns (Params memory);

    /// @notice Current protocol parameters.
    function params() external view returns (Params memory);

    /// @notice Addresses for which non-zero permissions are set.
    function permissionAddresses() external view returns (address[] memory);

    /// @notice Permission addresses staged for commit.
    function stagedPermissionGrantsAddresses() external view returns (address[] memory);

    /// @notice Return all addresses where rawPermissionMask bit for permissionId is set to 1.
    /// @param permissionId Id of the permission to check.
    /// @return A list of dirty addresses.
    function addressesByPermission(uint8 permissionId) external view returns (address[] memory);

    /// @notice Checks if address has permission or given permission is force allowed for any address.
    /// @param addr Address to check
    /// @param permissionId Permission to check
    function hasPermission(address addr, uint8 permissionId) external view returns (bool);

    /// @notice Checks if address has all permissions.
    /// @param target Address to check
    /// @param permissionIds A list of permissions to check
    function hasAllPermissions(address target, uint8[] calldata permissionIds) external view returns (bool);

    /// @notice Max different ERC20 token addresses that could be managed by the protocol.
    function maxTokensPerVault() external view returns (uint256);

    /// @notice The delay for committing any governance params.
    function governanceDelay() external view returns (uint256);

    /// @notice The address of the protocol treasury.
    function protocolTreasury() external view returns (address);

    /// @notice Permissions mask which defines if ordinary permission should be reverted.
    /// This bitmask is xored with ordinary mask.
    function forceAllowMask() external view returns (uint256);

    /// @notice Withdraw limit per token per block.
    /// @param token Address of the token
    /// @return Withdraw limit per token per block
    function withdrawLimit(address token) external view returns (uint256);

    /// @notice Addresses that has staged validators.
    function stagedValidatorsAddresses() external view returns (address[] memory);

    /// @notice Timestamp after which staged granted permissions for the given address can be committed.
    /// @param target The given address
    /// @return Zero if there are no staged permission grants, timestamp otherwise
    function stagedValidatorsTimestamps(address target) external view returns (uint256);

    /// @notice Staged validator for the given address.
    /// @param target The given address
    /// @return Validator
    function stagedValidators(address target) external view returns (address);

    /// @notice Addresses that has validators.
    function validatorsAddresses() external view returns (address[] memory);

    /// @notice Address that has validators.
    /// @param i The number of address
    /// @return Validator address
    function validatorsAddress(uint256 i) external view returns (address);

    /// @notice Validator for the given address.
    /// @param target The given address
    /// @return Validator
    function validators(address target) external view returns (address);

    // -------------------  EXTERNAL, MUTATING, GOVERNANCE, IMMEDIATE  -------------------

    /// @notice Rollback all staged validators.
    function rollbackStagedValidators() external;

    /// @notice Revoke validator instantly from the given address.
    /// @param target The given address
    function revokeValidator(address target) external;

    /// @notice Stages a new validator for the given address
    /// @param target The given address
    /// @param validator The validator for the given address
    function stageValidator(address target, address validator) external;

    /// @notice Commits validator for the given address.
    /// @dev Reverts if governance delay has not passed yet.
    /// @param target The given address.
    function commitValidator(address target) external;

    /// @notice Commites all staged validators for which governance delay passed
    /// @return Addresses for which validators were committed
    function commitAllValidatorsSurpassedDelay() external returns (address[] memory);

    /// @notice Rollback all staged granted permission grant.
    function rollbackStagedPermissionGrants() external;

    /// @notice Commits permission grants for the given address.
    /// @dev Reverts if governance delay has not passed yet.
    /// @param target The given address.
    function commitPermissionGrants(address target) external;

    /// @notice Commites all staged permission grants for which governance delay passed.
    /// @return An array of addresses for which permission grants were committed.
    function commitAllPermissionGrantsSurpassedDelay() external returns (address[] memory);

    /// @notice Revoke permission instantly from the given address.
    /// @param target The given address.
    /// @param permissionIds A list of permission ids to revoke.
    function revokePermissions(address target, uint8[] memory permissionIds) external;

    /// @notice Commits staged protocol params.
    /// Reverts if governance delay has not passed yet.
    function commitParams() external;

    // -------------------  EXTERNAL, MUTATING, GOVERNANCE, DELAY  -------------------

    /// @notice Sets new pending params that could have been committed after governance delay expires.
    /// @param newParams New protocol parameters to set.
    function stageParams(Params memory newParams) external;

    /// @notice Stage granted permissions that could have been committed after governance delay expires.
    /// Resets commit delay and permissions if there are already staged permissions for this address.
    /// @param target Target address
    /// @param permissionIds A list of permission ids to grant
    function stagePermissionGrants(address target, uint8[] memory permissionIds) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import "./utils/IDefaultAccessControl.sol";

interface IUnitPricesGovernance is IDefaultAccessControl, IERC165 {
    // -------------------  EXTERNAL, VIEW  -------------------

    /// @notice Estimated amount of token worth 1 USD staged for commit.
    /// @param token Address of the token
    /// @return The amount of token
    function stagedUnitPrices(address token) external view returns (uint256);

    /// @notice Timestamp after which staged unit prices for the given token can be committed.
    /// @param token Address of the token
    /// @return Timestamp
    function stagedUnitPricesTimestamps(address token) external view returns (uint256);

    /// @notice Estimated amount of token worth 1 USD.
    /// @param token Address of the token
    /// @return The amount of token
    function unitPrices(address token) external view returns (uint256);

    // -------------------  EXTERNAL, MUTATING  -------------------

    /// @notice Stage estimated amount of token worth 1 USD staged for commit.
    /// @param token Address of the token
    /// @param value The amount of token
    function stageUnitPrice(address token, uint256 value) external;

    /// @notice Reset staged value
    /// @param token Address of the token
    function rollbackUnitPrice(address token) external;

    /// @notice Commit staged unit price
    /// @param token Address of the token
    function commitUnitPrice(address token) external;
}

// SPDX-License-Identifier: MIT
pragma solidity =0.8.9;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "./IProtocolGovernance.sol";

interface IVaultRegistry is IERC721 {
    /// @notice Get Vault for the giver NFT ID.
    /// @param nftId NFT ID
    /// @return vault Address of the Vault contract
    function vaultForNft(uint256 nftId) external view returns (address vault);

    /// @notice Get NFT ID for given Vault contract address.
    /// @param vault Address of the Vault contract
    /// @return nftId NFT ID
    function nftForVault(address vault) external view returns (uint256 nftId);

    /// @notice Checks if the nft is locked for all transfers
    /// @param nft NFT to check for lock
    /// @return `true` if locked, false otherwise
    function isLocked(uint256 nft) external view returns (bool);

    /// @notice Register new Vault and mint NFT.
    /// @param vault address of the vault
    /// @param owner owner of the NFT
    /// @return nft Nft minted for the given Vault
    function registerVault(address vault, address owner) external returns (uint256 nft);

    /// @notice Number of Vaults registered.
    function vaultsCount() external view returns (uint256);

    /// @notice All Vaults registered.
    function vaults() external view returns (address[] memory);

    /// @notice Address of the ProtocolGovernance.
    function protocolGovernance() external view returns (IProtocolGovernance);

    /// @notice Address of the staged ProtocolGovernance.
    function stagedProtocolGovernance() external view returns (IProtocolGovernance);

    /// @notice Minimal timestamp when staged ProtocolGovernance can be applied.
    function stagedProtocolGovernanceTimestamp() external view returns (uint256);

    /// @notice Stage new ProtocolGovernance.
    /// @param newProtocolGovernance new ProtocolGovernance
    function stageProtocolGovernance(IProtocolGovernance newProtocolGovernance) external;

    /// @notice Commit new ProtocolGovernance.
    function commitStagedProtocolGovernance() external;

    /// @notice Lock NFT for transfers
    /// @dev Use this method when vault structure is set up and should become immutable. Can be called by owner.
    /// @param nft - NFT to lock
    function lockNft(uint256 nft) external;
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.9;

library DataTypes {
    // refer to the whitepaper, section 1.1 basic concepts for a formal description of these properties.
    struct ReserveData {
        //stores the reserve configuration
        ReserveConfigurationMap configuration;
        //the liquidity index. Expressed in ray
        uint128 liquidityIndex;
        //variable borrow index. Expressed in ray
        uint128 variableBorrowIndex;
        //the current supply rate. Expressed in ray
        uint128 currentLiquidityRate;
        //the current variable borrow rate. Expressed in ray
        uint128 currentVariableBorrowRate;
        //the current stable borrow rate. Expressed in ray
        uint128 currentStableBorrowRate;
        uint40 lastUpdateTimestamp;
        //tokens addresses
        address aTokenAddress;
        address stableDebtTokenAddress;
        address variableDebtTokenAddress;
        //address of the interest rate strategy
        address interestRateStrategyAddress;
        //the id of the reserve. Represents the position in the list of the active reserves
        uint8 id;
    }

    struct ReserveConfigurationMap {
        //bit 0-15: LTV
        //bit 16-31: Liq. threshold
        //bit 32-47: Liq. bonus
        //bit 48-55: Decimals
        //bit 56: Reserve is active
        //bit 57: reserve is frozen
        //bit 58: borrowing is enabled
        //bit 59: stable rate borrowing enabled
        //bit 60-63: reserved
        //bit 64-79: reserve factor
        uint256 data;
    }

    struct UserConfigurationMap {
        uint256 data;
    }

    enum InterestRateMode {
        NONE,
        STABLE,
        VARIABLE
    }
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.9;
pragma experimental ABIEncoderV2;

import {ILendingPoolAddressesProvider} from "./ILendingPoolAddressesProvider.sol";
import {DataTypes} from "./DataTypes.sol";

interface ILendingPool {
    /**
     * @dev Emitted on deposit()
     * @param reserve The address of the underlying asset of the reserve
     * @param user The address initiating the deposit
     * @param onBehalfOf The beneficiary of the deposit, receiving the aTokens
     * @param amount The amount deposited
     * @param referral The referral code used
     **/
    event Deposit(
        address indexed reserve,
        address user,
        address indexed onBehalfOf,
        uint256 amount,
        uint16 indexed referral
    );

    /**
     * @dev Emitted on withdraw()
     * @param reserve The address of the underlyng asset being withdrawn
     * @param user The address initiating the withdrawal, owner of aTokens
     * @param to Address that will receive the underlying
     * @param amount The amount to be withdrawn
     **/
    event Withdraw(address indexed reserve, address indexed user, address indexed to, uint256 amount);

    /**
     * @dev Emitted on borrow() and flashLoan() when debt needs to be opened
     * @param reserve The address of the underlying asset being borrowed
     * @param user The address of the user initiating the borrow(), receiving the funds on borrow() or just
     * initiator of the transaction on flashLoan()
     * @param onBehalfOf The address that will be getting the debt
     * @param amount The amount borrowed out
     * @param borrowRateMode The rate mode: 1 for Stable, 2 for Variable
     * @param borrowRate The numeric rate at which the user has borrowed
     * @param referral The referral code used
     **/
    event Borrow(
        address indexed reserve,
        address user,
        address indexed onBehalfOf,
        uint256 amount,
        uint256 borrowRateMode,
        uint256 borrowRate,
        uint16 indexed referral
    );

    /**
     * @dev Emitted on repay()
     * @param reserve The address of the underlying asset of the reserve
     * @param user The beneficiary of the repayment, getting his debt reduced
     * @param repayer The address of the user initiating the repay(), providing the funds
     * @param amount The amount repaid
     **/
    event Repay(address indexed reserve, address indexed user, address indexed repayer, uint256 amount);

    /**
     * @dev Emitted on swapBorrowRateMode()
     * @param reserve The address of the underlying asset of the reserve
     * @param user The address of the user swapping his rate mode
     * @param rateMode The rate mode that the user wants to swap to
     **/
    event Swap(address indexed reserve, address indexed user, uint256 rateMode);

    /**
     * @dev Emitted on setUserUseReserveAsCollateral()
     * @param reserve The address of the underlying asset of the reserve
     * @param user The address of the user enabling the usage as collateral
     **/
    event ReserveUsedAsCollateralEnabled(address indexed reserve, address indexed user);

    /**
     * @dev Emitted on setUserUseReserveAsCollateral()
     * @param reserve The address of the underlying asset of the reserve
     * @param user The address of the user enabling the usage as collateral
     **/
    event ReserveUsedAsCollateralDisabled(address indexed reserve, address indexed user);

    /**
     * @dev Emitted on rebalanceStableBorrowRate()
     * @param reserve The address of the underlying asset of the reserve
     * @param user The address of the user for which the rebalance has been executed
     **/
    event RebalanceStableBorrowRate(address indexed reserve, address indexed user);

    /**
     * @dev Emitted on flashLoan()
     * @param target The address of the flash loan receiver contract
     * @param initiator The address initiating the flash loan
     * @param asset The address of the asset being flash borrowed
     * @param amount The amount flash borrowed
     * @param premium The fee flash borrowed
     * @param referralCode The referral code used
     **/
    event FlashLoan(
        address indexed target,
        address indexed initiator,
        address indexed asset,
        uint256 amount,
        uint256 premium,
        uint16 referralCode
    );

    /**
     * @dev Emitted when the pause is triggered.
     */
    event Paused();

    /**
     * @dev Emitted when the pause is lifted.
     */
    event Unpaused();

    /**
     * @dev Emitted when a borrower is liquidated. This event is emitted by the LendingPool via
     * LendingPoolCollateral manager using a DELEGATECALL
     * This allows to have the events in the generated ABI for LendingPool.
     * @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
     * @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
     * @param user The address of the borrower getting liquidated
     * @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
     * @param liquidatedCollateralAmount The amount of collateral received by the liiquidator
     * @param liquidator The address of the liquidator
     * @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
     * to receive the underlying collateral asset directly
     **/
    event LiquidationCall(
        address indexed collateralAsset,
        address indexed debtAsset,
        address indexed user,
        uint256 debtToCover,
        uint256 liquidatedCollateralAmount,
        address liquidator,
        bool receiveAToken
    );

    /**
     * @dev Emitted when the state of a reserve is updated. NOTE: This event is actually declared
     * in the ReserveLogic library and emitted in the updateInterestRates() function. Since the function is internal,
     * the event will actually be fired by the LendingPool contract. The event is therefore replicated here so it
     * gets added to the LendingPool ABI
     * @param reserve The address of the underlying asset of the reserve
     * @param liquidityRate The new liquidity rate
     * @param stableBorrowRate The new stable borrow rate
     * @param variableBorrowRate The new variable borrow rate
     * @param liquidityIndex The new liquidity index
     * @param variableBorrowIndex The new variable borrow index
     **/
    event ReserveDataUpdated(
        address indexed reserve,
        uint256 liquidityRate,
        uint256 stableBorrowRate,
        uint256 variableBorrowRate,
        uint256 liquidityIndex,
        uint256 variableBorrowIndex
    );

    /**
     * @dev Deposits an `amount` of underlying asset into the reserve, receiving in return overlying aTokens.
     * - E.g. User deposits 100 USDC and gets in return 100 aUSDC
     * @param asset The address of the underlying asset to deposit
     * @param amount The amount to be deposited
     * @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user
     *   wants to receive them on his own wallet, or a different address if the beneficiary of aTokens
     *   is a different wallet
     * @param referralCode Code used to register the integrator originating the operation, for potential rewards.
     *   0 if the action is executed directly by the user, without any middle-man
     **/
    function deposit(
        address asset,
        uint256 amount,
        address onBehalfOf,
        uint16 referralCode
    ) external;

    /**
     * @dev Withdraws an `amount` of underlying asset from the reserve, burning the equivalent aTokens owned
     * E.g. User has 100 aUSDC, calls withdraw() and receives 100 USDC, burning the 100 aUSDC
     * @param asset The address of the underlying asset to withdraw
     * @param amount The underlying amount to be withdrawn
     *   - Send the value type(uint256).max in order to withdraw the whole aToken balance
     * @param to Address that will receive the underlying, same as msg.sender if the user
     *   wants to receive it on his own wallet, or a different address if the beneficiary is a
     *   different wallet
     * @return The final amount withdrawn
     **/
    function withdraw(
        address asset,
        uint256 amount,
        address to
    ) external returns (uint256);

    /**
     * @dev Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower
     * already deposited enough collateral, or he was given enough allowance by a credit delegator on the
     * corresponding debt token (StableDebtToken or VariableDebtToken)
     * - E.g. User borrows 100 USDC passing as `onBehalfOf` his own address, receiving the 100 USDC in his wallet
     *   and 100 stable/variable debt tokens, depending on the `interestRateMode`
     * @param asset The address of the underlying asset to borrow
     * @param amount The amount to be borrowed
     * @param interestRateMode The interest rate mode at which the user wants to borrow: 1 for Stable, 2 for Variable
     * @param referralCode Code used to register the integrator originating the operation, for potential rewards.
     *   0 if the action is executed directly by the user, without any middle-man
     * @param onBehalfOf Address of the user who will receive the debt. Should be the address of the borrower itself
     * calling the function if he wants to borrow against his own collateral, or the address of the credit delegator
     * if he has been given credit delegation allowance
     **/
    function borrow(
        address asset,
        uint256 amount,
        uint256 interestRateMode,
        uint16 referralCode,
        address onBehalfOf
    ) external;

    /**
     * @notice Repays a borrowed `amount` on a specific reserve, burning the equivalent debt tokens owned
     * - E.g. User repays 100 USDC, burning 100 variable/stable debt tokens of the `onBehalfOf` address
     * @param asset The address of the borrowed underlying asset previously borrowed
     * @param amount The amount to repay
     * - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode`
     * @param rateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable
     * @param onBehalfOf Address of the user who will get his debt reduced/removed. Should be the address of the
     * user calling the function if he wants to reduce/remove his own debt, or the address of any other
     * other borrower whose debt should be removed
     * @return The final amount repaid
     **/
    function repay(
        address asset,
        uint256 amount,
        uint256 rateMode,
        address onBehalfOf
    ) external returns (uint256);

    /**
     * @dev Allows a borrower to swap his debt between stable and variable mode, or viceversa
     * @param asset The address of the underlying asset borrowed
     * @param rateMode The rate mode that the user wants to swap to
     **/
    function swapBorrowRateMode(address asset, uint256 rateMode) external;

    /**
     * @dev Rebalances the stable interest rate of a user to the current stable rate defined on the reserve.
     * - Users can be rebalanced if the following conditions are satisfied:
     *     1. Usage ratio is above 95%
     *     2. the current deposit APY is below REBALANCE_UP_THRESHOLD * maxVariableBorrowRate, which means that too much has been
     *        borrowed at a stable rate and depositors are not earning enough
     * @param asset The address of the underlying asset borrowed
     * @param user The address of the user to be rebalanced
     **/
    function rebalanceStableBorrowRate(address asset, address user) external;

    /**
     * @dev Allows depositors to enable/disable a specific deposited asset as collateral
     * @param asset The address of the underlying asset deposited
     * @param useAsCollateral `true` if the user wants to use the deposit as collateral, `false` otherwise
     **/
    function setUserUseReserveAsCollateral(address asset, bool useAsCollateral) external;

    /**
     * @dev Function to liquidate a non-healthy position collateral-wise, with Health Factor below 1
     * - The caller (liquidator) covers `debtToCover` amount of debt of the user getting liquidated, and receives
     *   a proportionally amount of the `collateralAsset` plus a bonus to cover market risk
     * @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
     * @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
     * @param user The address of the borrower getting liquidated
     * @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
     * @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
     * to receive the underlying collateral asset directly
     **/
    function liquidationCall(
        address collateralAsset,
        address debtAsset,
        address user,
        uint256 debtToCover,
        bool receiveAToken
    ) external;

    /**
     * @dev Allows smartcontracts to access the liquidity of the pool within one transaction,
     * as long as the amount taken plus a fee is returned.
     * IMPORTANT There are security concerns for developers of flashloan receiver contracts that must be kept into consideration.
     * For further details please visit https://developers.aave.com
     * @param receiverAddress The address of the contract receiving the funds, implementing the IFlashLoanReceiver interface
     * @param assets The addresses of the assets being flash-borrowed
     * @param amounts The amounts amounts being flash-borrowed
     * @param modes Types of the debt to open if the flash loan is not returned:
     *   0 -> Don't open any debt, just revert if funds can't be transferred from the receiver
     *   1 -> Open debt at stable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
     *   2 -> Open debt at variable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
     * @param onBehalfOf The address  that will receive the debt in the case of using on `modes` 1 or 2
     * @param params Variadic packed params to pass to the receiver as extra information
     * @param referralCode Code used to register the integrator originating the operation, for potential rewards.
     *   0 if the action is executed directly by the user, without any middle-man
     **/
    function flashLoan(
        address receiverAddress,
        address[] calldata assets,
        uint256[] calldata amounts,
        uint256[] calldata modes,
        address onBehalfOf,
        bytes calldata params,
        uint16 referralCode
    ) external;

    /**
     * @dev Returns the user account data across all the reserves
     * @param user The address of the user
     * @return totalCollateralETH the total collateral in ETH of the user
     * @return totalDebtETH the total debt in ETH of the user
     * @return availableBorrowsETH the borrowing power left of the user
     * @return currentLiquidationThreshold the liquidation threshold of the user
     * @return ltv the loan to value of the user
     * @return healthFactor the current health factor of the user
     **/
    function getUserAccountData(address user)
        external
        view
        returns (
            uint256 totalCollateralETH,
            uint256 totalDebtETH,
            uint256 availableBorrowsETH,
            uint256 currentLiquidationThreshold,
            uint256 ltv,
            uint256 healthFactor
        );

    function initReserve(
        address reserve,
        address aTokenAddress,
        address stableDebtAddress,
        address variableDebtAddress,
        address interestRateStrategyAddress
    ) external;

    function setReserveInterestRateStrategyAddress(address reserve, address rateStrategyAddress) external;

    function setConfiguration(address reserve, uint256 configuration) external;

    /**
     * @dev Returns the configuration of the reserve
     * @param asset The address of the underlying asset of the reserve
     * @return The configuration of the reserve
     **/
    function getConfiguration(address asset) external view returns (DataTypes.ReserveConfigurationMap memory);

    /**
     * @dev Returns the configuration of the user across all the reserves
     * @param user The user address
     * @return The configuration of the user
     **/
    function getUserConfiguration(address user) external view returns (DataTypes.UserConfigurationMap memory);

    /**
     * @dev Returns the normalized income normalized income of the reserve
     * @param asset The address of the underlying asset of the reserve
     * @return The reserve's normalized income
     */
    function getReserveNormalizedIncome(address asset) external view returns (uint256);

    /**
     * @dev Returns the normalized variable debt per unit of asset
     * @param asset The address of the underlying asset of the reserve
     * @return The reserve normalized variable debt
     */
    function getReserveNormalizedVariableDebt(address asset) external view returns (uint256);

    /**
     * @dev Returns the state and configuration of the reserve
     * @param asset The address of the underlying asset of the reserve
     * @return The state of the reserve
     **/
    function getReserveData(address asset) external view returns (DataTypes.ReserveData memory);

    function finalizeTransfer(
        address asset,
        address from,
        address to,
        uint256 amount,
        uint256 balanceFromAfter,
        uint256 balanceToBefore
    ) external;

    function getReservesList() external view returns (address[] memory);

    function getAddressesProvider() external view returns (ILendingPoolAddressesProvider);

    function setPause(bool val) external;

    function paused() external view returns (bool);
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.9;

/**
 * @title LendingPoolAddressesProvider contract
 * @dev Main registry of addresses part of or connected to the protocol, including permissioned roles
 * - Acting also as factory of proxies and admin of those, so with right to change its implementations
 * - Owned by the Aave Governance
 * @author Aave
 **/
interface ILendingPoolAddressesProvider {
    event MarketIdSet(string newMarketId);
    event LendingPoolUpdated(address indexed newAddress);
    event ConfigurationAdminUpdated(address indexed newAddress);
    event EmergencyAdminUpdated(address indexed newAddress);
    event LendingPoolConfiguratorUpdated(address indexed newAddress);
    event LendingPoolCollateralManagerUpdated(address indexed newAddress);
    event PriceOracleUpdated(address indexed newAddress);
    event LendingRateOracleUpdated(address indexed newAddress);
    event ProxyCreated(bytes32 id, address indexed newAddress);
    event AddressSet(bytes32 id, address indexed newAddress, bool hasProxy);

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

    function setMarketId(string calldata marketId) external;

    function setAddress(bytes32 id, address newAddress) external;

    function setAddressAsProxy(bytes32 id, address impl) external;

    function getAddress(bytes32 id) external view returns (address);

    function getLendingPool() external view returns (address);

    function setLendingPoolImpl(address pool) external;

    function getLendingPoolConfigurator() external view returns (address);

    function setLendingPoolConfiguratorImpl(address configurator) external;

    function getLendingPoolCollateralManager() external view returns (address);

    function setLendingPoolCollateralManager(address manager) external;

    function getPoolAdmin() external view returns (address);

    function setPoolAdmin(address admin) external;

    function getEmergencyAdmin() external view returns (address);

    function setEmergencyAdmin(address admin) external;

    function getPriceOracle() external view returns (address);

    function setPriceOracle(address priceOracle) external;

    function getLendingRateOracle() external view returns (address);

    function setLendingRateOracle(address lendingRateOracle) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

interface IERC1271 {
    /// @notice Verifies offchain signature.
    /// @dev Should return whether the signature provided is valid for the provided hash
    ///
    /// MUST return the bytes4 magic value 0x1626ba7e when function passes.
    ///
    /// MUST NOT modify state (using STATICCALL for solc < 0.5, view modifier for solc > 0.5)
    ///
    /// MUST allow external calls
    /// @param _hash Hash of the data to be signed
    /// @param _signature Signature byte array associated with _hash
    /// @return magicValue 0x1626ba7e if valid, 0xffffffff otherwise
    function isValidSignature(bytes32 _hash, bytes memory _signature) external view returns (bytes4 magicValue);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

interface IOracle {
    /// @notice Oracle price for tokens as a Q64.96 value.
    /// @notice Returns pricing information based on the indexes of non-zero bits in safetyIndicesSet.
    /// @notice It is possible that not all indices will have their respective prices returned.
    /// @dev The price is token1 / token0 i.e. how many weis of token1 required for 1 wei of token0.
    /// The safety indexes are:
    ///
    /// 1 - unsafe, this is typically a spot price that can be easily manipulated,
    ///
    /// 2 - 4 - more or less safe, this is typically a uniV3 oracle, where the safety is defined by the timespan of the average price
    ///
    /// 5 - safe - this is typically a chailink oracle
    /// @param token0 Reference to token0
    /// @param token1 Reference to token1
    /// @param safetyIndicesSet Bitmask of safety indices that are allowed for the return prices. For set of safety indexes = { 1 }, safetyIndicesSet = 0x2
    /// @return pricesX96 Prices that satisfy safetyIndex and tokens
    /// @return safetyIndices Safety indices for those prices
    function priceX96(
        address token0,
        address token1,
        uint256 safetyIndicesSet
    ) external view returns (uint256[] memory pricesX96, uint256[] memory safetyIndices);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "@openzeppelin/contracts/access/IAccessControlEnumerable.sol";

interface IDefaultAccessControl is IAccessControlEnumerable {
    /// @notice Checks that the address is contract admin.
    /// @param who Address to check
    /// @return `true` if who is admin, `false` otherwise
    function isAdmin(address who) external view returns (bool);

    /// @notice Checks that the address is contract admin.
    /// @param who Address to check
    /// @return `true` if who is operator, `false` otherwise
    function isOperator(address who) external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "../oracles/IOracle.sol";

interface IERC20RootVaultHelper {
    function getTvlToken0(
        uint256[] calldata tvls,
        address[] calldata tokens,
        IOracle oracle
    ) external view returns (uint256 tvl0);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

interface ILpCallback {
    /// @notice Function, that ERC20RootVault calling after deposit
    function depositCallback() external;

    /// @notice Function, that ERC20RootVault calling after withdraw
    function withdrawCallback() external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "./IVault.sol";
import "./IVaultRoot.sol";

interface IAggregateVault is IVault, IVaultRoot {}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "./IAggregateVault.sol";
import "../utils/IERC20RootVaultHelper.sol";

interface IERC20RootVault is IAggregateVault, IERC20 {
    /// @notice Initialized a new contract.
    /// @dev Can only be initialized by vault governance
    /// @param nft_ NFT of the vault in the VaultRegistry
    /// @param vaultTokens_ ERC20 tokens that will be managed by this Vault
    /// @param strategy_ The address that will have approvals for subvaultNfts
    /// @param subvaultNfts_ The NFTs of the subvaults that will be aggregated by this ERC20RootVault
    function initialize(
        uint256 nft_,
        address[] memory vaultTokens_,
        address strategy_,
        uint256[] memory subvaultNfts_,
        IERC20RootVaultHelper helper_
    ) external;

    /// @notice The timestamp of last charging of fees
    function lastFeeCharge() external view returns (uint64);

    /// @notice The timestamp of last updating totalWithdrawnAmounts array
    function totalWithdrawnAmountsTimestamp() external view returns (uint64);

    /// @notice Returns value from totalWithdrawnAmounts array by _index
    /// @param _index The index at which the value will be returned
    function totalWithdrawnAmounts(uint256 _index) external view returns (uint256);

    /// @notice LP parameter that controls the charge in performance fees
    function lpPriceHighWaterMarkD18() external view returns (uint256);

    /// @notice List of addresses of depositors from which interaction with private vaults is allowed
    function depositorsAllowlist() external view returns (address[] memory);

    /// @notice Add new depositors in the depositorsAllowlist
    /// @param depositors Array of new depositors
    /// @dev The action can be done only by user with admins, owners or by approved rights
    function addDepositorsToAllowlist(address[] calldata depositors) external;

    /// @notice Remove depositors from the depositorsAllowlist
    /// @param depositors Array of depositors for remove
    /// @dev The action can be done only by user with admins, owners or by approved rights
    function removeDepositorsFromAllowlist(address[] calldata depositors) external;

    /// @notice The function of depositing the amount of tokens in exchange
    /// @param tokenAmounts Array of amounts of tokens for deposit
    /// @param minLpTokens Minimal value of LP tokens
    /// @param vaultOptions Options of vaults
    /// @return actualTokenAmounts Arrays of actual token amounts after deposit
    function deposit(
        uint256[] memory tokenAmounts,
        uint256 minLpTokens,
        bytes memory vaultOptions
    ) external returns (uint256[] memory actualTokenAmounts);

    /// @notice The function of withdrawing the amount of tokens in exchange
    /// @param to Address to which the withdrawal will be sent
    /// @param lpTokenAmount LP token amount, that requested for withdraw
    /// @param minTokenAmounts Array of minmal remining wtoken amounts after withdrawal
    /// @param vaultsOptions Options of vaults
    /// @return actualTokenAmounts Arrays of actual token amounts after withdrawal
    function withdraw(
        address to,
        uint256 lpTokenAmount,
        uint256[] memory minTokenAmounts,
        bytes[] memory vaultsOptions
    ) external returns (uint256[] memory actualTokenAmounts);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "../oracles/IOracle.sol";
import "./IERC20RootVault.sol";
import "./IVaultGovernance.sol";
import "../utils/IERC20RootVaultHelper.sol";

interface IERC20RootVaultGovernance is IVaultGovernance {
    /// @notice Params that could be changed by Strategy or Protocol Governance with Protocol Governance delay.
    /// @param strategyTreasury Reference to address that will collect strategy management fees
    /// @param strategyPerformanceTreasury Reference to address that will collect strategy performance fees
    /// @param privateVault If true, only whitlisted depositors can deposit into the vault
    /// @param managementFee Management fee for Strategist denominated in 10 ** 9
    /// @param performanceFee Performance fee for Strategist denominated in 10 ** 9
    /// @param depositCallbackAddress Address of callback function after deposit
    /// @param withdrawCallbackAddress Address of callback function after withdraw
    struct DelayedStrategyParams {
        address strategyTreasury;
        address strategyPerformanceTreasury;
        bool privateVault;
        uint256 managementFee;
        uint256 performanceFee;
        address depositCallbackAddress;
        address withdrawCallbackAddress;
    }

    /// @notice Params that could be changed by Protocol Governance with Protocol Governance delay.
    /// @param managementFeeChargeDelay The minimal interval between management fee charges
    /// @param oracle Oracle for getting token prices
    struct DelayedProtocolParams {
        uint256 managementFeeChargeDelay;
        IOracle oracle;
    }

    /// @notice Params that could be changed by Strategy or Protocol Governance.
    /// @param tokenLimitPerAddress Max LP token limit per address
    /// @param tokenLimit Max LP token for the vault
    struct StrategyParams {
        uint256 tokenLimitPerAddress;
        uint256 tokenLimit;
    }

    /// @notice Params that could be changed by Protocol Governance with Protocol Governance delay.
    /// @param protocolFee Management fee for Protocol denominated in 10 ** 9
    struct DelayedProtocolPerVaultParams {
        uint256 protocolFee;
    }

    /// @notice Params that could be changed by Operator role of Protocol Governance.
    /// @param disableDeposit Disable deposit for all ERC20 vaults
    struct OperatorParams {
        bool disableDeposit;
    }

    /// @notice Number of maximum protocol fee
    function MAX_PROTOCOL_FEE() external view returns (uint256);

    /// @notice Number of maximum management fee
    function MAX_MANAGEMENT_FEE() external view returns (uint256);

    /// @notice Number of maximum performance fee
    function MAX_PERFORMANCE_FEE() external view returns (uint256);

    /// @notice Delayed Protocol Params, i.e. Params that could be changed by Protocol Governance with Protocol Governance delay.
    function delayedProtocolParams() external view returns (DelayedProtocolParams memory);

    /// @notice Delayed Protocol Params staged for commit after delay.
    function stagedDelayedProtocolParams() external view returns (DelayedProtocolParams memory);

    /// @notice Delayed Protocol Per Vault Params, i.e. Params that could be changed by Protocol Governance with Protocol Governance delay.
    /// @param nft VaultRegistry NFT of the vault
    function delayedProtocolPerVaultParams(uint256 nft) external view returns (DelayedProtocolPerVaultParams memory);

    /// @notice Delayed Protocol Per Vault Params staged for commit after delay.
    /// @param nft VaultRegistry NFT of the vault
    function stagedDelayedProtocolPerVaultParams(uint256 nft)
        external
        view
        returns (DelayedProtocolPerVaultParams memory);

    /// @notice Strategy Params.
    /// @param nft VaultRegistry NFT of the vault
    function strategyParams(uint256 nft) external view returns (StrategyParams memory);

    /// @notice Operator Params.
    function operatorParams() external view returns (OperatorParams memory);

    /// @notice Delayed Strategy Params
    /// @param nft VaultRegistry NFT of the vault
    function delayedStrategyParams(uint256 nft) external view returns (DelayedStrategyParams memory);

    /// @notice Delayed Strategy Params staged for commit after delay.
    /// @param nft VaultRegistry NFT of the vault
    function stagedDelayedStrategyParams(uint256 nft) external view returns (DelayedStrategyParams memory);

    /// @notice Set Strategy params, i.e. Params that could be changed by Strategy or Protocol Governance immediately.
    /// @param nft Nft of the vault
    /// @param params New params
    function setStrategyParams(uint256 nft, StrategyParams calldata params) external;

    /// @notice Set Operator params, i.e. Params that could be changed by Operator or Protocol Governance immediately.
    /// @param params New params
    function setOperatorParams(OperatorParams calldata params) external;

    /// @notice Stage Delayed Protocol Per Vault Params, i.e. Params that could be changed by Protocol Governance with Protocol Governance delay.
    /// @param nft VaultRegistry NFT of the vault
    /// @param params New params
    function stageDelayedProtocolPerVaultParams(uint256 nft, DelayedProtocolPerVaultParams calldata params) external;

    /// @notice Commit Delayed Protocol Per Vault Params, i.e. Params that could be changed by Protocol Governance with Protocol Governance delay.
    /// @dev Can only be called after delayedProtocolPerVaultParamsTimestamp
    /// @param nft VaultRegistry NFT of the vault
    function commitDelayedProtocolPerVaultParams(uint256 nft) external;

    /// @notice Stage Delayed Strategy Params, i.e. Params that could be changed by Strategy or Protocol Governance with Protocol Governance delay.
    /// @param nft VaultRegistry NFT of the vault
    /// @param params New params
    function stageDelayedStrategyParams(uint256 nft, DelayedStrategyParams calldata params) external;

    /// @notice Commit Delayed Strategy Params, i.e. Params that could be changed by Strategy or Protocol Governance with Protocol Governance delay.
    /// @dev Can only be called after delayedStrategyParamsTimestamp
    /// @param nft VaultRegistry NFT of the vault
    function commitDelayedStrategyParams(uint256 nft) external;

    /// @notice Stage Delayed Protocol Params, i.e. Params that could be changed by Protocol Governance with Protocol Governance delay.
    /// @dev Can only be called after delayedProtocolParamsTimestamp.
    /// @param params New params
    function stageDelayedProtocolParams(DelayedProtocolParams calldata params) external;

    /// @notice Commit Delayed Protocol Params, i.e. Params that could be changed by Protocol Governance with Protocol Governance delay.
    function commitDelayedProtocolParams() external;

    /// @notice Deploys a new vault.
    /// @param vaultTokens_ ERC20 tokens that will be managed by this Vault
    /// @param strategy_ The address that will have approvals for subvaultNfts
    /// @param subvaultNfts_ The NFTs of the subvaults that will be aggregated by this ERC20RootVault
    /// @param owner_ Owner of the vault NFT
    function createVault(
        address[] memory vaultTokens_,
        address strategy_,
        uint256[] memory subvaultNfts_,
        address owner_
    ) external returns (IERC20RootVault vault, uint256 nft);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "../external/aave/ILendingPool.sol";
import "./IIntegrationVault.sol";

interface IERC20Vault is IIntegrationVault {
    /// @notice Initialized a new contract.
    /// @dev Can only be initialized by vault governance
    /// @param nft_ NFT of the vault in the VaultRegistry
    /// @param vaultTokens_ ERC20 tokens that will be managed by this Vault
    function initialize(uint256 nft_, address[] memory vaultTokens_) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "../external/erc/IERC1271.sol";
import "./IVault.sol";

interface IIntegrationVault is IVault, IERC1271 {
    /// @notice Pushes tokens on the vault balance to the underlying protocol. For example, for Yearn this operation will take USDC from
    /// the contract balance and convert it to yUSDC.
    /// @dev Tokens **must** be a subset of Vault Tokens. However, the convention is that if tokenAmount == 0 it is the same as token is missing.
    ///
    /// Also notice that this operation doesn't guarantee that tokenAmounts will be invested in full.
    /// @param tokens Tokens to push
    /// @param tokenAmounts Amounts of tokens to push
    /// @param options Additional options that could be needed for some vaults. E.g. for Uniswap this could be `deadline` param. For the exact bytes structure see concrete vault descriptions
    /// @return actualTokenAmounts The amounts actually invested. It could be less than tokenAmounts (but not higher)
    function push(
        address[] memory tokens,
        uint256[] memory tokenAmounts,
        bytes memory options
    ) external returns (uint256[] memory actualTokenAmounts);

    /// @notice The same as `push` method above but transfers tokens to vault balance prior to calling push.
    /// After the `push` it returns all the leftover tokens back (`push` method doesn't guarantee that tokenAmounts will be invested in full).
    /// @param tokens Tokens to push
    /// @param tokenAmounts Amounts of tokens to push
    /// @param options Additional options that could be needed for some vaults. E.g. for Uniswap this could be `deadline` param. For the exact bytes structure see concrete vault descriptions
    /// @return actualTokenAmounts The amounts actually invested. It could be less than tokenAmounts (but not higher)
    function transferAndPush(
        address from,
        address[] memory tokens,
        uint256[] memory tokenAmounts,
        bytes memory options
    ) external returns (uint256[] memory actualTokenAmounts);

    /// @notice Pulls tokens from the underlying protocol to the `to` address.
    /// @dev Can only be called but Vault Owner or Strategy. Vault owner is the owner of NFT for this vault in VaultManager.
    /// Strategy is approved address for the vault NFT.
    /// When called by vault owner this method just pulls the tokens from the protocol to the `to` address
    /// When called by strategy on vault other than zero vault it pulls the tokens to zero vault (required `to` == zero vault)
    /// When called by strategy on zero vault it pulls the tokens to zero vault, pushes tokens on the `to` vault, and reclaims everything that's left.
    /// Thus any vault other than zero vault cannot have any tokens on it
    ///
    /// Tokens **must** be a subset of Vault Tokens. However, the convention is that if tokenAmount == 0 it is the same as token is missing.
    ///
    /// Pull is fulfilled on the best effort basis, i.e. if the tokenAmounts overflows available funds it withdraws all the funds.
    /// @param to Address to receive the tokens
    /// @param tokens Tokens to pull
    /// @param tokenAmounts Amounts of tokens to pull
    /// @param options Additional options that could be needed for some vaults. E.g. for Uniswap this could be `deadline` param. For the exact bytes structure see concrete vault descriptions
    /// @return actualTokenAmounts The amounts actually withdrawn. It could be less than tokenAmounts (but not higher)
    function pull(
        address to,
        address[] memory tokens,
        uint256[] memory tokenAmounts,
        bytes memory options
    ) external returns (uint256[] memory actualTokenAmounts);

    /// @notice Claim ERC20 tokens from vault balance to zero vault.
    /// @dev Cannot be called from zero vault.
    /// @param tokens Tokens to claim
    /// @return actualTokenAmounts Amounts reclaimed
    function reclaimTokens(address[] memory tokens) external returns (uint256[] memory actualTokenAmounts);

    /// @notice Execute one of whitelisted calls.
    /// @dev Can only be called by Vault Owner or Strategy. Vault owner is the owner of NFT for this vault in VaultManager.
    /// Strategy is approved address for the vault NFT.
    ///
    /// Since this method allows sending arbitrary transactions, the destinations of the calls
    /// are whitelisted by Protocol Governance.
    /// @param to Address of the reward pool
    /// @param selector Selector of the call
    /// @param data Abi encoded parameters to `to::selector`
    /// @return result Result of execution of the call
    function externalCall(
        address to,
        bytes4 selector,
        bytes memory data
    ) external payable returns (bytes memory result);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "./IVaultGovernance.sol";

interface IVault is IERC165 {
    /// @notice Checks if the vault is initialized

    function initialized() external view returns (bool);

    /// @notice VaultRegistry NFT for this vault
    function nft() external view returns (uint256);

    /// @notice Address of the Vault Governance for this contract.
    function vaultGovernance() external view returns (IVaultGovernance);

    /// @notice ERC20 tokens under Vault management.
    function vaultTokens() external view returns (address[] memory);

    /// @notice Checks if a token is vault token
    /// @param token Address of the token to check
    /// @return `true` if this token is managed by Vault
    function isVaultToken(address token) external view returns (bool);

    /// @notice Total value locked for this contract.
    /// @dev Generally it is the underlying token value of this contract in some
    /// other DeFi protocol. For example, for USDC Yearn Vault this would be total USDC balance that could be withdrawn for Yearn to this contract.
    /// The tvl itself is estimated in some range. Sometimes the range is exact, sometimes it's not
    /// @return minTokenAmounts Lower bound for total available balances estimation (nth tokenAmount corresponds to nth token in vaultTokens)
    /// @return maxTokenAmounts Upper bound for total available balances estimation (nth tokenAmount corresponds to nth token in vaultTokens)
    function tvl() external view returns (uint256[] memory minTokenAmounts, uint256[] memory maxTokenAmounts);

    /// @notice Existential amounts for each token
    function pullExistentials() external view returns (uint256[] memory);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "../IProtocolGovernance.sol";
import "../IVaultRegistry.sol";
import "./IVault.sol";

interface IVaultGovernance {
    /// @notice Internal references of the contract.
    /// @param protocolGovernance Reference to Protocol Governance
    /// @param registry Reference to Vault Registry
    struct InternalParams {
        IProtocolGovernance protocolGovernance;
        IVaultRegistry registry;
        IVault singleton;
    }

    // -------------------  EXTERNAL, VIEW  -------------------

    /// @notice Timestamp in unix time seconds after which staged Delayed Strategy Params could be committed.
    /// @param nft Nft of the vault
    function delayedStrategyParamsTimestamp(uint256 nft) external view returns (uint256);

    /// @notice Timestamp in unix time seconds after which staged Delayed Protocol Params could be committed.
    function delayedProtocolParamsTimestamp() external view returns (uint256);

    /// @notice Timestamp in unix time seconds after which staged Delayed Protocol Params Per Vault could be committed.
    /// @param nft Nft of the vault
    function delayedProtocolPerVaultParamsTimestamp(uint256 nft) external view returns (uint256);

    /// @notice Timestamp in unix time seconds after which staged Internal Params could be committed.
    function internalParamsTimestamp() external view returns (uint256);

    /// @notice Internal Params of the contract.
    function internalParams() external view returns (InternalParams memory);

    /// @notice Staged new Internal Params.
    /// @dev The Internal Params could be committed after internalParamsTimestamp
    function stagedInternalParams() external view returns (InternalParams memory);

    // -------------------  EXTERNAL, MUTATING  -------------------

    /// @notice Stage new Internal Params.
    /// @param newParams New Internal Params
    function stageInternalParams(InternalParams memory newParams) external;

    /// @notice Commit staged Internal Params.
    function commitInternalParams() external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

interface IVaultRoot {
    /// @notice Checks if subvault is present
    /// @param nft_ index of subvault for check
    /// @return `true` if subvault present, `false` otherwise
    function hasSubvault(uint256 nft_) external view returns (bool);

    /// @notice Get subvault by index
    /// @param index Index of subvault
    /// @return address Address of the contract
    function subvaultAt(uint256 index) external view returns (address);

    /// @notice Get index of subvault by nft
    /// @param nft_ Nft for getting subvault
    /// @return index Index of subvault
    function subvaultOneBasedIndex(uint256 nft_) external view returns (uint256);

    /// @notice Get all subvalutNfts in the current Vault
    /// @return subvaultNfts Subvaults of NTFs
    function subvaultNfts() external view returns (uint256[] memory);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "./external/FullMath.sol";
import "./ExceptionsLibrary.sol";

/// @notice CommonLibrary shared utilities
library CommonLibrary {
    uint256 constant DENOMINATOR = 10**9;
    uint256 constant D18 = 10**18;
    uint256 constant YEAR = 365 * 24 * 3600;
    uint256 constant Q128 = 2**128;
    uint256 constant Q96 = 2**96;
    uint256 constant Q48 = 2**48;
    uint256 constant Q160 = 2**160;
    uint256 constant UNI_FEE_DENOMINATOR = 10**6;

    /// @notice Sort uint256 using bubble sort. The sorting is done in-place.
    /// @param arr Array of uint256
    function sortUint(uint256[] memory arr) internal pure {
        uint256 l = arr.length;
        for (uint256 i = 0; i < l; ++i) {
            for (uint256 j = i + 1; j < l; ++j) {
                if (arr[i] > arr[j]) {
                    uint256 temp = arr[i];
                    arr[i] = arr[j];
                    arr[j] = temp;
                }
            }
        }
    }

    /// @notice Checks if array of addresses is sorted and all adresses are unique
    /// @param tokens A set of addresses to check
    /// @return `true` if all addresses are sorted and unique, `false` otherwise
    function isSortedAndUnique(address[] memory tokens) internal pure returns (bool) {
        if (tokens.length < 2) {
            return true;
        }
        for (uint256 i = 0; i < tokens.length - 1; ++i) {
            if (tokens[i] >= tokens[i + 1]) {
                return false;
            }
        }
        return true;
    }

    /// @notice Projects tokenAmounts onto subset or superset of tokens
    /// @dev
    /// Requires both sets of tokens to be sorted. When tokens are not sorted, it's undefined behavior.
    /// If there is a token in tokensToProject that is not part of tokens and corresponding tokenAmountsToProject > 0, reverts.
    /// Zero token amount is eqiuvalent to missing token
    function projectTokenAmounts(
        address[] memory tokens,
        address[] memory tokensToProject,
        uint256[] memory tokenAmountsToProject
    ) internal pure returns (uint256[] memory) {
        uint256[] memory res = new uint256[](tokens.length);
        uint256 t = 0;
        uint256 tp = 0;
        while ((t < tokens.length) && (tp < tokensToProject.length)) {
            if (tokens[t] < tokensToProject[tp]) {
                res[t] = 0;
                t++;
            } else if (tokens[t] > tokensToProject[tp]) {
                if (tokenAmountsToProject[tp] == 0) {
                    tp++;
                } else {
                    revert("TPS");
                }
            } else {
                res[t] = tokenAmountsToProject[tp];
                t++;
                tp++;
            }
        }
        while (t < tokens.length) {
            res[t] = 0;
            t++;
        }
        return res;
    }

    /// @notice Calculated sqrt of uint in X96 format
    /// @param xX96 input number in X96 format
    /// @return sqrt of xX96 in X96 format
    function sqrtX96(uint256 xX96) internal pure returns (uint256) {
        uint256 sqX96 = sqrt(xX96);
        return sqX96 << 48;
    }

    /// @notice Calculated sqrt of uint
    /// @param x input number
    /// @return sqrt of x
    function sqrt(uint256 x) internal pure returns (uint256) {
        if (x == 0) return 0;
        uint256 xx = x;
        uint256 r = 1;
        if (xx >= 0x100000000000000000000000000000000) {
            xx >>= 128;
            r <<= 64;
        }
        if (xx >= 0x10000000000000000) {
            xx >>= 64;
            r <<= 32;
        }
        if (xx >= 0x100000000) {
            xx >>= 32;
            r <<= 16;
        }
        if (xx >= 0x10000) {
            xx >>= 16;
            r <<= 8;
        }
        if (xx >= 0x100) {
            xx >>= 8;
            r <<= 4;
        }
        if (xx >= 0x10) {
            xx >>= 4;
            r <<= 2;
        }
        if (xx >= 0x8) {
            r <<= 1;
        }
        r = (r + x / r) >> 1;
        r = (r + x / r) >> 1;
        r = (r + x / r) >> 1;
        r = (r + x / r) >> 1;
        r = (r + x / r) >> 1;
        r = (r + x / r) >> 1;
        r = (r + x / r) >> 1;
        uint256 r1 = x / r;
        return (r < r1 ? r : r1);
    }

    /// @notice Recovers signer address from signed message hash
    /// @param _ethSignedMessageHash signed message
    /// @param _signature contatenated ECDSA r, s, v (65 bytes)
    /// @return Recovered address if the signature is valid, address(0) otherwise
    function recoverSigner(bytes32 _ethSignedMessageHash, bytes memory _signature) internal pure returns (address) {
        (bytes32 r, bytes32 s, uint8 v) = splitSignature(_signature);

        return ecrecover(_ethSignedMessageHash, v, r, s);
    }

    /// @notice Get ECDSA r, s, v from signature
    /// @param sig signature (65 bytes)
    /// @return r ECDSA r
    /// @return s ECDSA s
    /// @return v ECDSA v
    function splitSignature(bytes memory sig)
        internal
        pure
        returns (
            bytes32 r,
            bytes32 s,
            uint8 v
        )
    {
        require(sig.length == 65, ExceptionsLibrary.INVALID_LENGTH);

        assembly {
            r := mload(add(sig, 32))
            s := mload(add(sig, 64))
            v := byte(0, mload(add(sig, 96)))
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

/// @notice Exceptions stores project`s smart-contracts exceptions
library ExceptionsLibrary {
    string constant ADDRESS_ZERO = "AZ";
    string constant VALUE_ZERO = "VZ";
    string constant EMPTY_LIST = "EMPL";
    string constant NOT_FOUND = "NF";
    string constant INIT = "INIT";
    string constant DUPLICATE = "DUP";
    string constant NULL = "NULL";
    string constant TIMESTAMP = "TS";
    string constant FORBIDDEN = "FRB";
    string constant ALLOWLIST = "ALL";
    string constant LIMIT_OVERFLOW = "LIMO";
    string constant LIMIT_UNDERFLOW = "LIMU";
    string constant INVALID_VALUE = "INV";
    string constant INVARIANT = "INVA";
    string constant INVALID_TARGET = "INVTR";
    string constant INVALID_TOKEN = "INVTO";
    string constant INVALID_INTERFACE = "INVI";
    string constant INVALID_SELECTOR = "INVS";
    string constant INVALID_STATE = "INVST";
    string constant INVALID_LENGTH = "INVL";
    string constant LOCK = "LCKD";
    string constant DISABLED = "DIS";
}

//SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

/// @notice Stores permission ids for addresses
library PermissionIdsLibrary {
    // The msg.sender is allowed to register vault
    uint8 constant REGISTER_VAULT = 0;
    // The msg.sender is allowed to create vaults
    uint8 constant CREATE_VAULT = 1;
    // The token is allowed to be transfered by vault
    uint8 constant ERC20_TRANSFER = 2;
    // The token is allowed to be added to vault
    uint8 constant ERC20_VAULT_TOKEN = 3;
    // Trusted protocols that are allowed to be approved of vault ERC20 tokens by any strategy
    uint8 constant ERC20_APPROVE = 4;
    // Trusted protocols that are allowed to be approved of vault ERC20 tokens by trusted strategy
    uint8 constant ERC20_APPROVE_RESTRICTED = 5;
    // Strategy allowed using restricted API
    uint8 constant TRUSTED_STRATEGY = 6;
}

// SPDX-License-Identifier: MIT
pragma solidity =0.8.9;

/// @title Contains 512-bit math functions
/// @notice Facilitates multiplication and division that can have overflow of an intermediate value without any loss of precision
/// @dev Handles "phantom overflow" i.e., allows multiplication and division where an intermediate value overflows 256 bits
library FullMath {
    /// @notice Calculates floor(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
    /// @param a The multiplicand
    /// @param b The multiplier
    /// @param denominator The divisor
    /// @return result The 256-bit result
    /// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv
    function mulDiv(
        uint256 a,
        uint256 b,
        uint256 denominator
    ) internal pure returns (uint256 result) {
        // diff: original lib works under 0.7.6 with overflows enabled
        unchecked {
            // 512-bit multiply [prod1 prod0] = a * b
            // Compute the product mod 2**256 and mod 2**256 - 1
            // then 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(a, b, not(0))
                prod0 := mul(a, b)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division
            if (prod1 == 0) {
                require(denominator > 0);
                assembly {
                    result := div(prod0, denominator)
                }
                return result;
            }

            // Make sure the result is less than 2**256.
            // Also prevents denominator == 0
            require(denominator > prod1);

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

            // Make division exact by subtracting the remainder from [prod1 prod0]
            // Compute remainder using mulmod
            uint256 remainder;
            assembly {
                remainder := mulmod(a, b, denominator)
            }
            // Subtract 256 bit number from 512 bit number
            assembly {
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator
            // Compute largest power of two divisor of denominator.
            // Always >= 1.
            // diff: original uint256 twos = -denominator & denominator;
            uint256 twos = uint256(-int256(denominator)) & denominator;
            // Divide denominator by power of two
            assembly {
                denominator := div(denominator, twos)
            }

            // Divide [prod1 prod0] by the factors of two
            assembly {
                prod0 := div(prod0, twos)
            }
            // Shift in bits from prod1 into prod0. For this we need
            // to flip `twos` such that it is 2**256 / twos.
            // If twos is zero, then it becomes one
            assembly {
                twos := add(div(sub(0, twos), twos), 1)
            }
            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
            // correct for four bits. That is, denominator * inv = 1 mod 2**4
            uint256 inv = (3 * denominator) ^ 2;
            // Now use 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.
            inv *= 2 - denominator * inv; // inverse mod 2**8
            inv *= 2 - denominator * inv; // inverse mod 2**16
            inv *= 2 - denominator * inv; // inverse mod 2**32
            inv *= 2 - denominator * inv; // inverse mod 2**64
            inv *= 2 - denominator * inv; // inverse mod 2**128
            inv *= 2 - denominator * inv; // 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 precoditions 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 * inv;
            return result;
        }
    }

    /// @notice Calculates ceil(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
    /// @param a The multiplicand
    /// @param b The multiplier
    /// @param denominator The divisor
    /// @return result The 256-bit result
    function mulDivRoundingUp(
        uint256 a,
        uint256 b,
        uint256 denominator
    ) internal pure returns (uint256 result) {
        // diff: original lib works under 0.7.6 with overflows enabled
        unchecked {
            result = mulDiv(a, b, denominator);
            if (mulmod(a, b, denominator) > 0) {
                require(result < type(uint256).max);
                result++;
            }
        }
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity =0.8.9;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "../libraries/ExceptionsLibrary.sol";

contract ERC20Token is IERC20 {
    bytes32 public constant PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    uint8 public constant decimals = 18;

    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;
    uint256 public totalSupply;
    string public name;
    string public symbol;

    uint256 private immutable _chainId;
    bytes32 private _cachedDomainSeparator;
    mapping(address => uint256) public nonces;

    constructor() {
        _chainId = block.chainid;
    }

    // -------------------  EXTERNAL, VIEW  -------------------

    function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
        return block.chainid == _chainId ? _cachedDomainSeparator : calculateDomainSeparator();
    }

    // -------------------  EXTERNAL, MUTATING  -------------------

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

    function transfer(address to, uint256 amount) public virtual returns (bool) {
        balanceOf[msg.sender] -= amount;

        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(msg.sender, to, amount);
        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        uint256 allowed = allowance[from][msg.sender];

        if (allowed != type(uint256).max) {
            allowance[from][msg.sender] = allowed - amount;
        }

        balanceOf[from] -= amount;

        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(from, to, amount);
        return true;
    }

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        require(deadline >= block.timestamp, ExceptionsLibrary.TIMESTAMP);

        unchecked {
            bytes32 digest = keccak256(
                abi.encodePacked(
                    "\x19\x01",
                    DOMAIN_SEPARATOR(),
                    keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner], deadline))
                )
            );
            nonces[owner] += 1;
            address recoveredAddress = ecrecover(digest, v, r, s);
            require(recoveredAddress != address(0) && recoveredAddress == owner, ExceptionsLibrary.FORBIDDEN);
            allowance[recoveredAddress][spender] = value;
        }

        emit Approval(owner, spender, value);
    }

    // -------------------  INTERNAL, VIEW  -------------------

    function calculateDomainSeparator() internal view virtual returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                    keccak256(bytes(name)),
                    keccak256("1"),
                    block.chainid,
                    address(this)
                )
            );
    }

    // -------------------  INTERNAL, MUTATING  -------------------

    function _initERC20(string memory _name, string memory _symbol) internal {
        name = _name;
        symbol = _symbol;
        _cachedDomainSeparator = calculateDomainSeparator();
    }

    function _mint(address to, uint256 amount) internal virtual {
        totalSupply += amount;

        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(address(0), to, amount);
    }

    function _burn(address from, uint256 amount) internal virtual {
        balanceOf[from] -= amount;

        unchecked {
            totalSupply -= amount;
        }

        emit Transfer(from, address(0), amount);
    }
}

// SPDX-License-Identifier: BSL-1.1
pragma solidity 0.8.9;

import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "../interfaces/vaults/IIntegrationVault.sol";
import "../interfaces/vaults/IERC20Vault.sol";
import "../interfaces/vaults/IVaultRoot.sol";
import "../interfaces/vaults/IAggregateVault.sol";
import "./Vault.sol";
import "../libraries/ExceptionsLibrary.sol";

/// @notice Vault that combines several integration layer Vaults into one Vault.
contract AggregateVault is IAggregateVault, Vault {
    using SafeERC20 for IERC20;
    uint256[] private _subvaultNfts;
    mapping(uint256 => uint256) private _subvaultNftsIndex;

    // -------------------  EXTERNAL, VIEW  -------------------

    /// @inheritdoc IVaultRoot
    function subvaultNfts() external view returns (uint256[] memory) {
        return _subvaultNfts;
    }

    /// @inheritdoc IVaultRoot
    function subvaultOneBasedIndex(uint256 nft_) external view returns (uint256) {
        return _subvaultNftsIndex[nft_];
    }

    /// @inheritdoc IVaultRoot
    function hasSubvault(uint256 nft_) external view returns (bool) {
        return (_subvaultNftsIndex[nft_] > 0);
    }

    /// @inheritdoc IVaultRoot
    function subvaultAt(uint256 index) external view returns (address) {
        uint256 subvaultNft = _subvaultNfts[index];
        return _vaultGovernance.internalParams().registry.vaultForNft(subvaultNft);
    }

    /// @inheritdoc IVault
    function tvl()
        public
        view
        override(IVault, Vault)
        returns (uint256[] memory minTokenAmounts, uint256[] memory maxTokenAmounts)
    {
        IVaultRegistry registry = _vaultGovernance.internalParams().registry;
        address[] memory vaultTokens = _vaultTokens;
        minTokenAmounts = new uint256[](vaultTokens.length);
        maxTokenAmounts = new uint256[](vaultTokens.length);
        for (uint256 i = 0; i < _subvaultNfts.length; ++i) {
            IIntegrationVault vault = IIntegrationVault(registry.vaultForNft(_subvaultNfts[i]));
            (uint256[] memory sMinTokenAmounts, uint256[] memory sMaxTokenAmounts) = vault.tvl();
            address[] memory subvaultTokens = vault.vaultTokens();
            uint256 subvaultTokenId = 0;
            for (
                uint256 tokenId = 0;
                tokenId < vaultTokens.length && subvaultTokenId < subvaultTokens.length;
                ++tokenId
            ) {
                if (subvaultTokens[subvaultTokenId] == vaultTokens[tokenId]) {
                    minTokenAmounts[tokenId] += sMinTokenAmounts[subvaultTokenId];
                    maxTokenAmounts[tokenId] += sMaxTokenAmounts[subvaultTokenId];
                    ++subvaultTokenId;
                }
            }
        }
    }

    /// @inheritdoc IERC165
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, Vault) returns (bool) {
        return super.supportsInterface(interfaceId) || type(IAggregateVault).interfaceId == interfaceId;
    }

    // -------------------  INTERNAL, MUTATING  -------------------

    function _initialize(
        address[] memory vaultTokens_,
        uint256 nft_,
        address strategy_,
        uint256[] memory subvaultNfts_
    ) internal virtual {
        IVaultRegistry vaultRegistry = IVaultGovernance(msg.sender).internalParams().registry;
        for (uint256 i = 0; i < subvaultNfts_.length; i++) {
            // Significant amount of checks has been done in ERC20RootVaultGovernance in the createVault function to reduce contract size
            uint256 subvaultNft = subvaultNfts_[i];
            require(vaultRegistry.ownerOf(subvaultNft) == address(this), ExceptionsLibrary.FORBIDDEN);
            require(_subvaultNftsIndex[subvaultNft] == 0, ExceptionsLibrary.DUPLICATE);
            vaultRegistry.approve(strategy_, subvaultNft);
            vaultRegistry.lockNft(subvaultNft);
            _subvaultNftsIndex[subvaultNft] = i + 1;
        }
        _subvaultNfts = subvaultNfts_;
        _initialize(vaultTokens_, nft_);
    }

    function _push(uint256[] memory tokenAmounts, bytes memory vaultOptions)
        internal
        returns (uint256[] memory actualTokenAmounts)
    {
        require(_nft != 0, ExceptionsLibrary.INIT);
        IVaultGovernance.InternalParams memory params = _vaultGovernance.internalParams();
        uint256 destNft = _subvaultNfts[0];
        IVaultRegistry registry = params.registry;
        IIntegrationVault destVault = IIntegrationVault(registry.vaultForNft(destNft));
        for (uint256 i = 0; i < _vaultTokens.length; i++) {
            if (tokenAmounts[i] > 0) {
                IERC20(_vaultTokens[i]).safeIncreaseAllowance(address(destVault), tokenAmounts[i]);
            }
        }

        actualTokenAmounts = destVault.transferAndPush(address(this), _vaultTokens, tokenAmounts, vaultOptions);

        for (uint256 i = 0; i < _vaultTokens.length; i++) {
            if (tokenAmounts[i] > 0) {
                IERC20(_vaultTokens[i]).safeApprove(address(destVault), 0);
            }
        }
    }

    function _pull(
        address to,
        uint256[] memory tokenAmounts,
        bytes[] memory vaultsOptions
    ) internal returns (uint256[] memory actualTokenAmounts) {
        require(_nft != 0, ExceptionsLibrary.INIT);
        require(vaultsOptions.length == _subvaultNfts.length, ExceptionsLibrary.INVALID_LENGTH);
        IVaultRegistry vaultRegistry = _vaultGovernance.internalParams().registry;
        actualTokenAmounts = new uint256[](tokenAmounts.length);
        address[] memory tokens = _vaultTokens;
        uint256[] memory existentials = _pullExistentials;
        uint256[] memory leftToPull = new uint256[](tokenAmounts.length);
        for (uint256 i = 0; i < tokens.length; i++) {
            leftToPull[i] = tokenAmounts[i];
        }
        for (uint256 i = 0; i < _subvaultNfts.length; i++) {
            uint256 subvaultNft = _subvaultNfts[i];
            IIntegrationVault subvault = IIntegrationVault(vaultRegistry.vaultForNft(subvaultNft));
            uint256[] memory pulledAmounts = subvault.pull(address(this), tokens, leftToPull, vaultsOptions[i]);
            bool shouldStop = true;
            for (uint256 j = 0; j < tokens.length; j++) {
                if (leftToPull[j] > pulledAmounts[j] + existentials[j]) {
                    shouldStop = false;
                    leftToPull[j] -= pulledAmounts[j];
                } else {
                    leftToPull[j] = 0;
                }
            }
            if (shouldStop) {
                break;
            }
        }
        address subvault0 = vaultRegistry.vaultForNft(_subvaultNfts[0]);

        for (uint256 i = 0; i < tokens.length; i++) {
            uint256 balance = IERC20(tokens[i]).balanceOf(address(this));
            if (tokenAmounts[i] < balance) {
                actualTokenAmounts[i] = tokenAmounts[i];
                IERC20(tokens[i]).safeTransfer(to, tokenAmounts[i]);
                IERC20(tokens[i]).safeTransfer(subvault0, balance - tokenAmounts[i]);
            } else {
                actualTokenAmounts[i] = balance;
                IERC20(tokens[i]).safeTransfer(to, balance);
            }
        }
    }
}

// SPDX-License-Identifier: BSL-1.1
pragma solidity 0.8.9;

import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import "../libraries/CommonLibrary.sol";
import "../libraries/ExceptionsLibrary.sol";
import "../interfaces/vaults/IVault.sol";
import "./VaultGovernance.sol";

/// @notice Abstract contract that has logic common for every Vault.
/// @dev Notes:
/// ### ERC-721
///
/// Each Vault should be registered in VaultRegistry and get corresponding VaultRegistry NFT.
///
/// ### Access control
///
/// `push` and `pull` methods are only allowed for owner / approved person of the NFT. However,
/// `pull` for approved person also checks that pull destination is another vault of the Vault System.
///
/// The semantics is: NFT owner owns all Vault liquidity, Approved person is liquidity manager.
/// ApprovedForAll person cannot do anything except ERC-721 token transfers.
///
/// Both NFT owner and approved person can call externalCall method which claims liquidity mining rewards (if any)
///
/// `reclaimTokens` for mistakenly transfered tokens (not included into vaultTokens) additionally can be withdrawn by
/// the protocol admin
abstract contract Vault is IVault, ERC165 {
    using SafeERC20 for IERC20;

    IVaultGovernance internal _vaultGovernance;
    address[] internal _vaultTokens;
    mapping(address => int256) internal _vaultTokensIndex;
    uint256 internal _nft;
    uint256[] internal _pullExistentials;

    constructor() {
        // lock initialization and thus all mutations for any deployed Vault
        _nft = type(uint256).max;
    }

    // -------------------  EXTERNAL, VIEW  -------------------

    /// @inheritdoc IVault
    function initialized() external view returns (bool) {
        return _nft != 0;
    }

    /// @inheritdoc IVault
    function isVaultToken(address token) public view returns (bool) {
        return _vaultTokensIndex[token] != 0;
    }

    /// @inheritdoc IVault
    function vaultGovernance() external view returns (IVaultGovernance) {
        return _vaultGovernance;
    }

    /// @inheritdoc IVault
    function vaultTokens() external view returns (address[] memory) {
        return _vaultTokens;
    }

    /// @inheritdoc IVault
    function nft() external view returns (uint256) {
        return _nft;
    }

    /// @inheritdoc IVault
    function tvl() public view virtual returns (uint256[] memory minTokenAmounts, uint256[] memory maxTokenAmounts);

    /// @inheritdoc IVault
    function pullExistentials() external view returns (uint256[] memory) {
        return _pullExistentials;
    }

    /// @inheritdoc IERC165
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) {
        return super.supportsInterface(interfaceId) || (interfaceId == type(IVault).interfaceId);
    }

    // -------------------  INTERNAL, MUTATING  -------------------

    function _initialize(address[] memory vaultTokens_, uint256 nft_) internal virtual {
        require(_nft == 0, ExceptionsLibrary.INIT);
        require(CommonLibrary.isSortedAndUnique(vaultTokens_), ExceptionsLibrary.INVARIANT);
        require(nft_ != 0, ExceptionsLibrary.VALUE_ZERO); // guarantees that this method can only be called once
        IProtocolGovernance governance = IVaultGovernance(msg.sender).internalParams().protocolGovernance;
        require(
            vaultTokens_.length > 0 && vaultTokens_.length <= governance.maxTokensPerVault(),
            ExceptionsLibrary.INVALID_VALUE
        );
        for (uint256 i = 0; i < vaultTokens_.length; i++) {
            require(
                governance.hasPermission(vaultTokens_[i], PermissionIdsLibrary.ERC20_VAULT_TOKEN),
                ExceptionsLibrary.FORBIDDEN
            );
        }
        _vaultGovernance = IVaultGovernance(msg.sender);
        _vaultTokens = vaultTokens_;
        _nft = nft_;
        uint256 len = _vaultTokens.length;
        for (uint256 i = 0; i < len; ++i) {
            _vaultTokensIndex[vaultTokens_[i]] = int256(i + 1);

            IERC20Metadata token = IERC20Metadata(vaultTokens_[i]);
            _pullExistentials.push(10**(token.decimals() / 2));
        }
        emit Initialized(tx.origin, msg.sender, vaultTokens_, nft_);
    }

    // --------------------------  EVENTS  --------------------------

    /// @notice Emitted when Vault is intialized
    /// @param origin Origin of the transaction (tx.origin)
    /// @param sender Sender of the call (msg.sender)
    /// @param vaultTokens_ ERC20 tokens under the vault management
    /// @param nft_ VaultRegistry NFT assigned to the vault
    event Initialized(address indexed origin, address indexed sender, address[] vaultTokens_, uint256 nft_);
}

// SPDX-License-Identifier: BSL-1.1
pragma solidity 0.8.9;

import "@openzeppelin/contracts/proxy/Clones.sol";
import "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import "../interfaces/IProtocolGovernance.sol";
import "../interfaces/vaults/IVaultGovernance.sol";
import "../libraries/ExceptionsLibrary.sol";
import "../libraries/PermissionIdsLibrary.sol";

/// @notice Internal contract for managing different params.
/// @dev The contract should be overriden by the concrete VaultGovernance,
/// define different params structs and use abi.decode / abi.encode to serialize
/// to bytes in this contract. It also should emit events on params change.
abstract contract VaultGovernance is IVaultGovernance, ERC165 {
    InternalParams internal _internalParams;
    InternalParams private _stagedInternalParams;
    uint256 internal _internalParamsTimestamp;

    mapping(uint256 => bytes) internal _delayedStrategyParams;
    mapping(uint256 => bytes) internal _stagedDelayedStrategyParams;
    mapping(uint256 => uint256) internal _delayedStrategyParamsTimestamp;

    mapping(uint256 => bytes) internal _delayedProtocolPerVaultParams;
    mapping(uint256 => bytes) internal _stagedDelayedProtocolPerVaultParams;
    mapping(uint256 => uint256) internal _delayedProtocolPerVaultParamsTimestamp;

    bytes internal _delayedProtocolParams;
    bytes internal _stagedDelayedProtocolParams;
    uint256 internal _delayedProtocolParamsTimestamp;

    mapping(uint256 => bytes) internal _strategyParams;
    bytes internal _protocolParams;
    bytes internal _operatorParams;

    /// @notice Creates a new contract.
    /// @param internalParams_ Initial Internal Params
    constructor(InternalParams memory internalParams_) {
        require(address(internalParams_.protocolGovernance) != address(0), ExceptionsLibrary.ADDRESS_ZERO);
        require(address(internalParams_.registry) != address(0), ExceptionsLibrary.ADDRESS_ZERO);
        require(address(internalParams_.singleton) != address(0), ExceptionsLibrary.ADDRESS_ZERO);
        _internalParams = internalParams_;
    }

    // -------------------  EXTERNAL, VIEW  -------------------

    /// @inheritdoc IVaultGovernance
    function delayedStrategyParamsTimestamp(uint256 nft) external view returns (uint256) {
        return _delayedStrategyParamsTimestamp[nft];
    }

    /// @inheritdoc IVaultGovernance
    function delayedProtocolPerVaultParamsTimestamp(uint256 nft) external view returns (uint256) {
        return _delayedProtocolPerVaultParamsTimestamp[nft];
    }

    /// @inheritdoc IVaultGovernance
    function delayedProtocolParamsTimestamp() external view returns (uint256) {
        return _delayedProtocolParamsTimestamp;
    }

    /// @inheritdoc IVaultGovernance
    function internalParamsTimestamp() external view returns (uint256) {
        return _internalParamsTimestamp;
    }

    /// @inheritdoc IVaultGovernance
    function internalParams() external view returns (InternalParams memory) {
        return _internalParams;
    }

    /// @inheritdoc IVaultGovernance
    function stagedInternalParams() external view returns (InternalParams memory) {
        return _stagedInternalParams;
    }

    function supportsInterface(bytes4 interfaceID) public view virtual override(ERC165) returns (bool) {
        return super.supportsInterface(interfaceID) || interfaceID == type(IVaultGovernance).interfaceId;
    }

    // -------------------  EXTERNAL, MUTATING  -------------------

    /// @inheritdoc IVaultGovernance
    function stageInternalParams(InternalParams memory newParams) external {
        _requireProtocolAdmin();
        require(address(newParams.protocolGovernance) != address(0), ExceptionsLibrary.ADDRESS_ZERO);
        require(address(newParams.registry) != address(0), ExceptionsLibrary.ADDRESS_ZERO);
        require(address(newParams.singleton) != address(0), ExceptionsLibrary.ADDRESS_ZERO);
        _stagedInternalParams = newParams;
        _internalParamsTimestamp = block.timestamp + _internalParams.protocolGovernance.governanceDelay();
        emit StagedInternalParams(tx.origin, msg.sender, newParams, _internalParamsTimestamp);
    }

    /// @inheritdoc IVaultGovernance
    function commitInternalParams() external {
        _requireProtocolAdmin();
        require(_internalParamsTimestamp != 0, ExceptionsLibrary.NULL);
        require(block.timestamp >= _internalParamsTimestamp, ExceptionsLibrary.TIMESTAMP);
        _internalParams = _stagedInternalParams;
        delete _internalParamsTimestamp;
        delete _stagedInternalParams;
        emit CommitedInternalParams(tx.origin, msg.sender, _internalParams);
    }

    // -------------------  INTERNAL, VIEW  -------------------

    function _requireAtLeastStrategy(uint256 nft) internal view {
        require(
            (_internalParams.protocolGovernance.isAdmin(msg.sender) ||
                _internalParams.registry.getApproved(nft) == msg.sender ||
                (_internalParams.registry.ownerOf(nft) == msg.sender)),
            ExceptionsLibrary.FORBIDDEN
        );
    }

    function _requireProtocolAdmin() internal view {
        require(_internalParams.protocolGovernance.isAdmin(msg.sender), ExceptionsLibrary.FORBIDDEN);
    }

    function _requireAtLeastOperator() internal view {
        IProtocolGovernance governance = _internalParams.protocolGovernance;
        require(governance.isAdmin(msg.sender) || governance.isOperator(msg.sender), ExceptionsLibrary.FORBIDDEN);
    }

    // -------------------  INTERNAL, MUTATING  -------------------

    function _createVault(address owner) internal returns (address vault, uint256 nft) {
        IProtocolGovernance protocolGovernance = IProtocolGovernance(_internalParams.protocolGovernance);
        require(
            protocolGovernance.hasPermission(msg.sender, PermissionIdsLibrary.CREATE_VAULT),
            ExceptionsLibrary.FORBIDDEN
        );
        IVaultRegistry vaultRegistry = _internalParams.registry;
        nft = vaultRegistry.vaultsCount() + 1;
        vault = Clones.cloneDeterministic(address(_internalParams.singleton), bytes32(nft));
        vaultRegistry.registerVault(address(vault), owner);
    }

    /// @notice Set Delayed Strategy Params
    /// @param nft Nft of the vault
    /// @param params New params
    function _stageDelayedStrategyParams(uint256 nft, bytes memory params) internal {
        _requireAtLeastStrategy(nft);
        _stagedDelayedStrategyParams[nft] = params;
        uint256 delayFactor = _delayedStrategyParams[nft].length == 0 ? 0 : 1;
        _delayedStrategyParamsTimestamp[nft] =
            block.timestamp +
            _internalParams.protocolGovernance.governanceDelay() *
            delayFactor;
    }

    /// @notice Commit Delayed Strategy Params
    function _commitDelayedStrategyParams(uint256 nft) internal {
        _requireAtLeastStrategy(nft);
        uint256 thisDelayedStrategyParamsTimestamp = _delayedStrategyParamsTimestamp[nft];
        require(thisDelayedStrategyParamsTimestamp != 0, ExceptionsLibrary.NULL);
        require(block.timestamp >= thisDelayedStrategyParamsTimestamp, ExceptionsLibrary.TIMESTAMP);
        _delayedStrategyParams[nft] = _stagedDelayedStrategyParams[nft];
        delete _stagedDelayedStrategyParams[nft];
        delete _delayedStrategyParamsTimestamp[nft];
    }

    /// @notice Set Delayed Protocol Per Vault Params
    /// @param nft Nft of the vault
    /// @param params New params
    function _stageDelayedProtocolPerVaultParams(uint256 nft, bytes memory params) internal {
        _requireProtocolAdmin();
        _stagedDelayedProtocolPerVaultParams[nft] = params;
        uint256 delayFactor = _delayedProtocolPerVaultParams[nft].length == 0 ? 0 : 1;
        _delayedProtocolPerVaultParamsTimestamp[nft] =
            block.timestamp +
            _internalParams.protocolGovernance.governanceDelay() *
            delayFactor;
    }

    /// @notice Commit Delayed Protocol Per Vault Params
    function _commitDelayedProtocolPerVaultParams(uint256 nft) internal {
        _requireProtocolAdmin();
        uint256 thisDelayedProtocolPerVaultParamsTimestamp = _delayedProtocolPerVaultParamsTimestamp[nft];
        require(thisDelayedProtocolPerVaultParamsTimestamp != 0, ExceptionsLibrary.NULL);
        require(block.timestamp >= thisDelayedProtocolPerVaultParamsTimestamp, ExceptionsLibrary.TIMESTAMP);
        _delayedProtocolPerVaultParams[nft] = _stagedDelayedProtocolPerVaultParams[nft];
        delete _stagedDelayedProtocolPerVaultParams[nft];
        delete _delayedProtocolPerVaultParamsTimestamp[nft];
    }

    /// @notice Set Delayed Protocol Params
    /// @param params New params
    function _stageDelayedProtocolParams(bytes memory params) internal {
        _requireProtocolAdmin();
        uint256 delayFactor = _delayedProtocolParams.length == 0 ? 0 : 1;
        _stagedDelayedProtocolParams = params;
        _delayedProtocolParamsTimestamp =
            block.timestamp +
            _internalParams.protocolGovernance.governanceDelay() *
            delayFactor;
    }

    /// @notice Commit Delayed Protocol Params
    function _commitDelayedProtocolParams() internal {
        _requireProtocolAdmin();
        require(_delayedProtocolParamsTimestamp != 0, ExceptionsLibrary.NULL);
        require(block.timestamp >= _delayedProtocolParamsTimestamp, ExceptionsLibrary.TIMESTAMP);
        _delayedProtocolParams = _stagedDelayedProtocolParams;
        delete _stagedDelayedProtocolParams;
        delete _delayedProtocolParamsTimestamp;
    }

    /// @notice Set immediate strategy params
    /// @dev Should require nft > 0
    /// @param nft Nft of the vault
    /// @param params New params
    function _setStrategyParams(uint256 nft, bytes memory params) internal {
        _requireAtLeastStrategy(nft);
        _strategyParams[nft] = params;
    }

    /// @notice Set immediate operator params
    /// @param params New params
    function _setOperatorParams(bytes memory params) internal {
        _requireAtLeastOperator();
        _operatorParams = params;
    }

    /// @notice Set immediate protocol params
    /// @param params New params
    function _setProtocolParams(bytes memory params) internal {
        _requireProtocolAdmin();
        _protocolParams = params;
    }

    // --------------------------  EVENTS  --------------------------

    /// @notice Emitted when InternalParams are staged for commit
    /// @param origin Origin of the transaction (tx.origin)
    /// @param sender Sender of the call (msg.sender)
    /// @param params New params that were staged for commit
    /// @param when When the params could be committed
    event StagedInternalParams(address indexed origin, address indexed sender, InternalParams params, uint256 when);

    /// @notice Emitted when InternalParams are staged for commit
    /// @param origin Origin of the transaction (tx.origin)
    /// @param sender Sender of the call (msg.sender)
    /// @param params New params that were staged for commit
    event CommitedInternalParams(address indexed origin, address indexed sender, InternalParams params);

    /// @notice Emitted when New Vault is deployed
    /// @param origin Origin of the transaction (tx.origin)
    /// @param sender Sender of the call (msg.sender)
    /// @param vaultTokens Vault tokens for this vault
    /// @param options Options for deploy. The details of the options structure are specified in subcontracts
    /// @param owner Owner of the VaultRegistry NFT for this vault
    /// @param vaultAddress Address of the new Vault
    /// @param vaultNft VaultRegistry NFT for the new Vault
    event DeployedVault(
        address indexed origin,
        address indexed sender,
        address[] vaultTokens,
        bytes options,
        address owner,
        address vaultAddress,
        uint256 vaultNft
    );
}

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

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