Contract Source Code:

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.18;

import {MorphoBlueLenderBorrower} from "./MorphoBlueLenderBorrower.sol";
import {IStrategyInterface} from "./interfaces/IStrategyInterface.sol";
import {Id} from "./interfaces/morpho/IMorpho.sol";

contract MorphoBlueLenderBorrowerFactory {
    event NewStrategy(address indexed strategy, Id indexed marketId);

    address public immutable GOV;
    address public immutable morpho;
    address public immutable router;

    address public management;
    address public performanceFeeRecipient;
    address public keeper;
    address public emergencyAdmin;

    /// @notice Track deployments by market id.
    mapping(Id => address) public deployments;

    constructor(
        address _management,
        address _performanceFeeRecipient,
        address _keeper,
        address _emergencyAdmin,
        address _gov,
        address _morpho,
        address _router
    ) {
        require(_gov != address(0));
        management = _management;
        performanceFeeRecipient = _performanceFeeRecipient;
        keeper = _keeper;
        emergencyAdmin = _emergencyAdmin;
        GOV = _gov;
        morpho = _morpho;
        router = _router;
    }

    function newStrategy(
        address _asset,
        string calldata _name,
        address _borrowToken,
        address _lenderVault,
        Id _marketId,
        address _borrowUsdOracle
    ) external virtual returns (address) {
        require(deployments[_marketId] == address(0));
        IStrategyInterface _newStrategy = IStrategyInterface(
            address(
                new MorphoBlueLenderBorrower(
                    _asset,
                    _name,
                    _borrowToken,
                    _lenderVault,
                    GOV,
                    morpho,
                    _marketId,
                    _borrowUsdOracle,
                    router
                )
            )
        );

        _newStrategy.setPerformanceFeeRecipient(performanceFeeRecipient);
        _newStrategy.setKeeper(keeper);
        _newStrategy.setPendingManagement(management);
        _newStrategy.setEmergencyAdmin(emergencyAdmin);

        emit NewStrategy(address(_newStrategy), _marketId);
        deployments[_marketId] = address(_newStrategy);
        return address(_newStrategy);
    }

    function setAddresses(
        address _management,
        address _performanceFeeRecipient,
        address _keeper,
        address _emergencyAdmin
    ) external {
        require(msg.sender == management, "!management");
        management = _management;
        performanceFeeRecipient = _performanceFeeRecipient;
        keeper = _keeper;
        emergencyAdmin = _emergencyAdmin;
    }


}

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.18;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {Math} from "@openzeppelin/contracts/utils/math/Math.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import {BaseLenderBorrower} from "./BaseLenderBorrower.sol";
import {IMorpho, Id, MarketParams, Position} from "./interfaces/morpho/IMorpho.sol";
import {IChainlinkAggregator} from "./interfaces/IChainlinkAggregator.sol";
import {IOracle} from "./interfaces/morpho/IOracle.sol";
import {MorphoBalancesLib, MorphoLib} from "./libraries/morpho/periphery/MorphoBalancesLib.sol";
import {SharesMathLib} from "./libraries/morpho/SharesMathLib.sol";
import {UniswapV3Swapper} from "@periphery/swappers/UniswapV3Swapper.sol";

contract MorphoBlueLenderBorrower is BaseLenderBorrower, UniswapV3Swapper {
    using SafeERC20 for ERC20;
    using MorphoBalancesLib for IMorpho;
    using MorphoLib for IMorpho;

    uint256 internal constant ORACLE_PRICE_SCALE = 1e36;

    IMorpho public immutable morpho;
    Id public immutable marketId;
    MarketParams public marketParams;

    address public immutable GOV;

    uint256 internal immutable COLL_SCALE;

    uint256 internal immutable BORROW_SCALE;

    /// @notice USD price feed (1e8) for borrow token.
    /// @dev Collateral price is derived using Morpho's oracle (collateral -> borrow) then this oracle (borrow -> USD).
    address public borrowUsdOracle;

    constructor(
        address _asset,
        string memory _name,
        address _borrowToken,
        address _lenderVault,
        address _gov,
        address _morpho,
        Id _marketId,
        address _borrowUsdOracle,
        address _router
    ) BaseLenderBorrower(_asset, _name, _borrowToken, _lenderVault) {
        GOV = _gov;
        morpho = IMorpho(_morpho);
        marketId = _marketId;

        marketParams = morpho.idToMarketParams(_marketId);
        require(
            marketParams.loanToken == _borrowToken &&
                marketParams.collateralToken == _asset
        );
        COLL_SCALE = 10 ** ERC20(_asset).decimals();
        BORROW_SCALE = 10 ** ERC20(_borrowToken).decimals();

        ERC20(_asset).forceApprove(_morpho, type(uint256).max);
        ERC20(_borrowToken).forceApprove(_morpho, type(uint256).max);

        _setMinAmountToSell(1e4);
        router = _router;

        require(IChainlinkAggregator(_borrowUsdOracle).decimals() == 8);
        borrowUsdOracle = _borrowUsdOracle;
    }

    /*//////////////////////////////////////////////////////////////
                            WRITE FUNCTIONS
    //////////////////////////////////////////////////////////////*/

    function _supplyCollateral(uint256 amount) internal virtual override {
        if (amount == 0) return;
        morpho.supplyCollateral(marketParams, amount, address(this), "");
    }

    function _withdrawCollateral(uint256 amount) internal virtual override {
        if (amount == 0) return;
        morpho.withdrawCollateral(
            marketParams,
            amount,
            address(this),
            address(this)
        );
    }

    function _borrow(uint256 amount) internal virtual override {
        if (amount == 0) return;
        morpho.borrow(marketParams, amount, 0, address(this), address(this));
    }

    // Need to give shares as input to avoid rounding errors on full repays.
    function _repay(uint256 amount) internal virtual override {
        if (amount == 0) return;
        (
            ,
            ,
            uint256 totalBorrowAssets,
            uint256 totalBorrowShares
        ) = MorphoBalancesLib.expectedMarketBalances(morpho, marketParams);

        uint256 shares = Math.min(
            SharesMathLib.toSharesDown(
                amount,
                totalBorrowAssets,
                totalBorrowShares
            ),
            morpho.borrowShares(marketId, address(this))
        );

        morpho.repay(marketParams, 0, shares, address(this), "");
    }

    /*//////////////////////////////////////////////////////////////
                            VIEW FUNCTIONS
    //////////////////////////////////////////////////////////////*/

    function _getPrice(
        address _asset
    ) internal view virtual override returns (uint256 price) {
        if (_asset == borrowToken) {
            price = _readUsdOracle();
        } else if (_asset == address(asset)) {
            // Use Morpho's oracle to get collateral price in borrow token, then convert to USD
            // Morpho oracle returns: (collateral amount) / (borrow token amount) scaled by 1e36 relative to decimals.
            uint256 borrowUsd = _readUsdOracle();
            uint256 ratio = IOracle(marketParams.oracle).price();
            price = (ratio * borrowUsd * COLL_SCALE) / (BORROW_SCALE * ORACLE_PRICE_SCALE);
        } else {
            revert();
        }
    }

    function _isSupplyPaused() internal view virtual override returns (bool) {
        return false;
    }

    function _isBorrowPaused() internal view virtual override returns (bool) {
        return false;
    }

    function _isLiquidatable() internal view virtual override returns (bool) {
        Position memory p = morpho.position(marketId, address(this));
        if (p.borrowShares == 0) return false;

        uint256 collateralValue = (uint256(p.collateral) *
            IOracle(marketParams.oracle).price()) / ORACLE_PRICE_SCALE;
        uint256 maxBorrow = (collateralValue * marketParams.lltv) / WAD;

        return balanceOfDebt() > maxBorrow;
    }

    function _maxCollateralDeposit()
        internal
        view
        virtual
        override
        returns (uint256)
    {
        return type(uint256).max;
    }

    function _maxBorrowAmount()
        internal
        view
        virtual
        override
        returns (uint256)
    {
        (uint256 totalSupplyAssets, , uint256 totalBorrowAssets, ) = morpho
            .expectedMarketBalances(marketParams);
        return
            totalSupplyAssets > totalBorrowAssets
                ? totalSupplyAssets - totalBorrowAssets
                : 0;
    }

    function getNetBorrowApr(
        uint256 /* newAmount */
    ) public view virtual override returns (uint256) {
        return 1;
    }

    function getNetRewardApr(
        uint256 /* newAmount */
    ) public view virtual override returns (uint256) {
        // Hardcoded high reward APR to keep borrowing favored over costs.
        return 1e20;
    }

    function getLiquidateCollateralFactor()
        public
        view
        virtual
        override
        returns (uint256)
    {
        return marketParams.lltv;
    }

    function balanceOfCollateral()
        public
        view
        virtual
        override
        returns (uint256)
    {
        Position memory p = morpho.position(marketId, address(this));
        return p.collateral;
    }

    function balanceOfDebt() public view virtual override returns (uint256) {
        return morpho.expectedBorrowAssets(marketParams, address(this));
    }

    /*//////////////////////////////////////////////////////////////
                        HARVEST / SWAP LOGIC
    //////////////////////////////////////////////////////////////*/

    function _claimRewards() internal virtual override {}

    function _claimAndSellRewards() internal virtual override {
        uint256 have = balanceOfLentAssets() + balanceOfBorrowToken();
        uint256 owe = balanceOfDebt();

        if (have > owe) {
            uint256 amountToSell = have - owe;
            _withdrawFromLender(amountToSell);
            _sellBorrowToken(Math.min(amountToSell, balanceOfBorrowToken()));
        }
    }

    function _buyBorrowToken() internal virtual override {
        uint256 _amount = borrowTokenOwedBalance();

        uint256 maxAssetIn = (_fromUsd(
            _toUsd(_amount, borrowToken),
            address(asset)
        ) * (MAX_BPS + slippage)) / MAX_BPS;
        if (maxAssetIn == 0) return;

        _swapTo(address(asset), borrowToken, _amount, maxAssetIn);
    }

    function _sellBorrowToken(uint256 _amount) internal virtual override {
        if (_amount == 0) return;

        _swapFrom(
            borrowToken,
            address(asset),
            _amount,
            _getAmountOut(_amount, borrowToken, address(asset))
        );
    }

    /*//////////////////////////////////////////////////////////////
                        MANAGEMENT UTILITIES
    //////////////////////////////////////////////////////////////*/

    function setUniFees(
        address _token0,
        address _token1,
        uint24 _fee
    ) external onlyManagement {
        _setUniFees(_token0, _token1, _fee);
    }

    function setUniBase(address _base) external onlyManagement {
        base = _base;
    }

    function setMinAmountToSell(
        uint256 _minAmountToSell
    ) external onlyManagement {
        _setMinAmountToSell(_minAmountToSell);
    }

    function setBorrowUsdOracle(
        address _borrowUsdOracle
    ) external onlyManagement {
        require(IChainlinkAggregator(_borrowUsdOracle).decimals() == 8);
        borrowUsdOracle = _borrowUsdOracle;
    }

    /// @notice Sweep of non-asset ERC20 tokens to governance
    /// @param _token The ERC20 token to sweep
    function sweep(address _token) external {
        require(msg.sender == GOV, "!gov");
        require(
            _token != address(asset) &&
                _token != address(borrowToken) &&
                _token != address(lenderVault),
            "!sweep"
        );
        ERC20(_token).safeTransfer(GOV, ERC20(_token).balanceOf(address(this)));
    }

    function _readUsdOracle() internal view returns (uint256) {
        int256 answer = IChainlinkAggregator(borrowUsdOracle).latestAnswer();
        require(answer > 0, "0");
        return uint256(answer);
    }
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.8.18;

import {IStrategy} from "@tokenized-strategy/interfaces/IStrategy.sol";
import {ILenderBorrower} from "./ILenderBorrower.sol";
import {IMorpho} from "./morpho/IMorpho.sol";
import {Id} from "./morpho/IMorpho.sol";

interface IStrategyInterface is IStrategy, ILenderBorrower {
    //TODO: Add your specific implementation interface in here.

    function GOV() external view returns (address);

    function sweep(address _token) external;

    // Morpho-specific views
    function morpho() external view returns (IMorpho);

    function marketId() external view returns (Id);

    function marketParams()
        external
        view
        returns (address, address, address, address, uint256);

    function lenderVault() external view returns (address);

    function base() external view returns (address);

    function router() external view returns (address);

    // Morpho-specific management setters
    function setRewardAprOracle(address _oracle) external;

    function setUsdOracles(
        address _assetUsdOracle,
        address _borrowUsdOracle
    ) external;

    function setUniFees(address _token0, address _token1, uint24 _fee) external;

    function setUniBase(address _base) external;

    function setMinAmountToSell(uint256 _minAmountToSell) external;

    function setAuction(address _auction) external;

    function setUseAuction(bool _useAuction) external;
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

type Id is bytes32;

struct MarketParams {
    address loanToken;
    address collateralToken;
    address oracle;
    address irm;
    uint256 lltv;
}

/// @dev Warning: For `feeRecipient`, `supplyShares` does not contain the accrued shares since the last interest
/// accrual.
struct Position {
    uint256 supplyShares;
    uint128 borrowShares;
    uint128 collateral;
}

/// @dev Warning: `totalSupplyAssets` does not contain the accrued interest since the last interest accrual.
/// @dev Warning: `totalBorrowAssets` does not contain the accrued interest since the last interest accrual.
/// @dev Warning: `totalSupplyShares` does not contain the additional shares accrued by `feeRecipient` since the last
/// interest accrual.
struct Market {
    uint128 totalSupplyAssets;
    uint128 totalSupplyShares;
    uint128 totalBorrowAssets;
    uint128 totalBorrowShares;
    uint128 lastUpdate;
    uint128 fee;
}

struct Authorization {
    address authorizer;
    address authorized;
    bool isAuthorized;
    uint256 nonce;
    uint256 deadline;
}

struct Signature {
    uint8 v;
    bytes32 r;
    bytes32 s;
}

/// @dev This interface is used for factorizing IMorphoStaticTyping and IMorpho.
/// @dev Consider using the IMorpho interface instead of this one.
interface IMorphoBase {
    /// @notice The EIP-712 domain separator.
    /// @dev Warning: Every EIP-712 signed message based on this domain separator can be reused on chains sharing the
    /// same chain id and on forks because the domain separator would be the same.
    function DOMAIN_SEPARATOR() external view returns (bytes32);

    /// @notice The owner of the contract.
    /// @dev It has the power to change the owner.
    /// @dev It has the power to set fees on markets and set the fee recipient.
    /// @dev It has the power to enable but not disable IRMs and LLTVs.
    function owner() external view returns (address);

    /// @notice The fee recipient of all markets.
    /// @dev The recipient receives the fees of a given market through a supply position on that market.
    function feeRecipient() external view returns (address);

    /// @notice Whether the `irm` is enabled.
    function isIrmEnabled(address irm) external view returns (bool);

    /// @notice Whether the `lltv` is enabled.
    function isLltvEnabled(uint256 lltv) external view returns (bool);

    /// @notice Whether `authorized` is authorized to modify `authorizer`'s position on all markets.
    /// @dev Anyone is authorized to modify their own positions, regardless of this variable.
    function isAuthorized(
        address authorizer,
        address authorized
    ) external view returns (bool);

    /// @notice The `authorizer`'s current nonce. Used to prevent replay attacks with EIP-712 signatures.
    function nonce(address authorizer) external view returns (uint256);

    /// @notice Sets `newOwner` as `owner` of the contract.
    /// @dev Warning: No two-step transfer ownership.
    /// @dev Warning: The owner can be set to the zero address.
    function setOwner(address newOwner) external;

    /// @notice Enables `irm` as a possible IRM for market creation.
    /// @dev Warning: It is not possible to disable an IRM.
    function enableIrm(address irm) external;

    /// @notice Enables `lltv` as a possible LLTV for market creation.
    /// @dev Warning: It is not possible to disable a LLTV.
    function enableLltv(uint256 lltv) external;

    /// @notice Sets the `newFee` for the given market `marketParams`.
    /// @param newFee The new fee, scaled by WAD.
    /// @dev Warning: The recipient can be the zero address.
    function setFee(MarketParams memory marketParams, uint256 newFee) external;

    /// @notice Sets `newFeeRecipient` as `feeRecipient` of the fee.
    /// @dev Warning: If the fee recipient is set to the zero address, fees will accrue there and will be lost.
    /// @dev Modifying the fee recipient will allow the new recipient to claim any pending fees not yet accrued. To
    /// ensure that the current recipient receives all due fees, accrue interest manually prior to making any changes.
    function setFeeRecipient(address newFeeRecipient) external;

    /// @notice Creates the market `marketParams`.
    /// @dev Here is the list of assumptions on the market's dependencies (tokens, IRM and oracle) that guarantees
    /// Morpho behaves as expected:
    /// - The token should be ERC-20 compliant, except that it can omit return values on `transfer` and `transferFrom`.
    /// - The token balance of Morpho should only decrease on `transfer` and `transferFrom`. In particular, tokens with
    /// burn functions are not supported.
    /// - The token should not re-enter Morpho on `transfer` nor `transferFrom`.
    /// - The token balance of the sender (resp. receiver) should decrease (resp. increase) by exactly the given amount
    /// on `transfer` and `transferFrom`. In particular, tokens with fees on transfer are not supported.
    /// - The IRM should not re-enter Morpho.
    /// - The oracle should return a price with the correct scaling.
    /// - The oracle price should not be able to change instantly such that the new price is less than the old price
    /// multiplied by LLTV*LIF. In particular, if the loan asset is a vault that can receive donations, the oracle
    /// should not price its shares using the AUM.
    /// @dev Here is a list of assumptions on the market's dependencies which, if broken, could break Morpho's liveness
    /// properties (funds could get stuck):
    /// - The token should not revert on `transfer` and `transferFrom` if balances and approvals are right.
    /// - The amount of assets supplied and borrowed should not be too high (max ~1e32), otherwise the number of shares
    /// might not fit within 128 bits.
    /// - The IRM should not revert on `borrowRate`.
    /// - The IRM should not return a very high borrow rate (otherwise the computation of `interest` in
    /// `_accrueInterest` can overflow).
    /// - The oracle should not revert `price`.
    /// - The oracle should not return a very high price (otherwise the computation of `maxBorrow` in `_isHealthy` or of
    /// `assetsRepaid` in `liquidate` can overflow).
    /// @dev The borrow share price of a market with less than 1e4 assets borrowed can be decreased by manipulations, to
    /// the point where `totalBorrowShares` is very large and borrowing overflows.
    function createMarket(MarketParams memory marketParams) external;

    /// @notice Supplies `assets` or `shares` on behalf of `onBehalf`, optionally calling back the caller's
    /// `onMorphoSupply` function with the given `data`.
    /// @dev Either `assets` or `shares` should be zero. Most use cases should rely on `assets` as an input so the
    /// caller is guaranteed to have `assets` tokens pulled from their balance, but the possibility to mint a specific
    /// amount of shares is given for full compatibility and precision.
    /// @dev Supplying a large amount can revert for overflow.
    /// @dev Supplying an amount of shares may lead to supply more or fewer assets than expected due to slippage.
    /// Consider using the `assets` parameter to avoid this.
    /// @param marketParams The market to supply assets to.
    /// @param assets The amount of assets to supply.
    /// @param shares The amount of shares to mint.
    /// @param onBehalf The address that will own the increased supply position.
    /// @param data Arbitrary data to pass to the `onMorphoSupply` callback. Pass empty data if not needed.
    /// @return assetsSupplied The amount of assets supplied.
    /// @return sharesSupplied The amount of shares minted.
    function supply(
        MarketParams memory marketParams,
        uint256 assets,
        uint256 shares,
        address onBehalf,
        bytes memory data
    ) external returns (uint256 assetsSupplied, uint256 sharesSupplied);

    /// @notice Withdraws `assets` or `shares` on behalf of `onBehalf` and sends the assets to `receiver`.
    /// @dev Either `assets` or `shares` should be zero. To withdraw max, pass the `shares`'s balance of `onBehalf`.
    /// @dev `msg.sender` must be authorized to manage `onBehalf`'s positions.
    /// @dev Withdrawing an amount corresponding to more shares than supplied will revert for underflow.
    /// @dev It is advised to use the `shares` input when withdrawing the full position to avoid reverts due to
    /// conversion roundings between shares and assets.
    /// @param marketParams The market to withdraw assets from.
    /// @param assets The amount of assets to withdraw.
    /// @param shares The amount of shares to burn.
    /// @param onBehalf The address of the owner of the supply position.
    /// @param receiver The address that will receive the withdrawn assets.
    /// @return assetsWithdrawn The amount of assets withdrawn.
    /// @return sharesWithdrawn The amount of shares burned.
    function withdraw(
        MarketParams memory marketParams,
        uint256 assets,
        uint256 shares,
        address onBehalf,
        address receiver
    ) external returns (uint256 assetsWithdrawn, uint256 sharesWithdrawn);

    /// @notice Borrows `assets` or `shares` on behalf of `onBehalf` and sends the assets to `receiver`.
    /// @dev Either `assets` or `shares` should be zero. Most use cases should rely on `assets` as an input so the
    /// caller is guaranteed to borrow `assets` of tokens, but the possibility to mint a specific amount of shares is
    /// given for full compatibility and precision.
    /// @dev `msg.sender` must be authorized to manage `onBehalf`'s positions.
    /// @dev Borrowing a large amount can revert for overflow.
    /// @dev Borrowing an amount of shares may lead to borrow fewer assets than expected due to slippage.
    /// Consider using the `assets` parameter to avoid this.
    /// @param marketParams The market to borrow assets from.
    /// @param assets The amount of assets to borrow.
    /// @param shares The amount of shares to mint.
    /// @param onBehalf The address that will own the increased borrow position.
    /// @param receiver The address that will receive the borrowed assets.
    /// @return assetsBorrowed The amount of assets borrowed.
    /// @return sharesBorrowed The amount of shares minted.
    function borrow(
        MarketParams memory marketParams,
        uint256 assets,
        uint256 shares,
        address onBehalf,
        address receiver
    ) external returns (uint256 assetsBorrowed, uint256 sharesBorrowed);

    /// @notice Repays `assets` or `shares` on behalf of `onBehalf`, optionally calling back the caller's
    /// `onMorphoRepay` function with the given `data`.
    /// @dev Either `assets` or `shares` should be zero. To repay max, pass the `shares`'s balance of `onBehalf`.
    /// @dev Repaying an amount corresponding to more shares than borrowed will revert for underflow.
    /// @dev It is advised to use the `shares` input when repaying the full position to avoid reverts due to conversion
    /// roundings between shares and assets.
    /// @dev An attacker can front-run a repay with a small repay making the transaction revert for underflow.
    /// @param marketParams The market to repay assets to.
    /// @param assets The amount of assets to repay.
    /// @param shares The amount of shares to burn.
    /// @param onBehalf The address of the owner of the debt position.
    /// @param data Arbitrary data to pass to the `onMorphoRepay` callback. Pass empty data if not needed.
    /// @return assetsRepaid The amount of assets repaid.
    /// @return sharesRepaid The amount of shares burned.
    function repay(
        MarketParams memory marketParams,
        uint256 assets,
        uint256 shares,
        address onBehalf,
        bytes memory data
    ) external returns (uint256 assetsRepaid, uint256 sharesRepaid);

    /// @notice Supplies `assets` of collateral on behalf of `onBehalf`, optionally calling back the caller's
    /// `onMorphoSupplyCollateral` function with the given `data`.
    /// @dev Interest are not accrued since it's not required and it saves gas.
    /// @dev Supplying a large amount can revert for overflow.
    /// @param marketParams The market to supply collateral to.
    /// @param assets The amount of collateral to supply.
    /// @param onBehalf The address that will own the increased collateral position.
    /// @param data Arbitrary data to pass to the `onMorphoSupplyCollateral` callback. Pass empty data if not needed.
    function supplyCollateral(
        MarketParams memory marketParams,
        uint256 assets,
        address onBehalf,
        bytes memory data
    ) external;

    /// @notice Withdraws `assets` of collateral on behalf of `onBehalf` and sends the assets to `receiver`.
    /// @dev `msg.sender` must be authorized to manage `onBehalf`'s positions.
    /// @dev Withdrawing an amount corresponding to more collateral than supplied will revert for underflow.
    /// @param marketParams The market to withdraw collateral from.
    /// @param assets The amount of collateral to withdraw.
    /// @param onBehalf The address of the owner of the collateral position.
    /// @param receiver The address that will receive the collateral assets.
    function withdrawCollateral(
        MarketParams memory marketParams,
        uint256 assets,
        address onBehalf,
        address receiver
    ) external;

    /// @notice Liquidates the given `repaidShares` of debt asset or seize the given `seizedAssets` of collateral on the
    /// given market `marketParams` of the given `borrower`'s position, optionally calling back the caller's
    /// `onMorphoLiquidate` function with the given `data`.
    /// @dev Either `seizedAssets` or `repaidShares` should be zero.
    /// @dev Seizing more than the collateral balance will underflow and revert without any error message.
    /// @dev Repaying more than the borrow balance will underflow and revert without any error message.
    /// @dev An attacker can front-run a liquidation with a small repay making the transaction revert for underflow.
    /// @param marketParams The market of the position.
    /// @param borrower The owner of the position.
    /// @param seizedAssets The amount of collateral to seize.
    /// @param repaidShares The amount of shares to repay.
    /// @param data Arbitrary data to pass to the `onMorphoLiquidate` callback. Pass empty data if not needed.
    /// @return The amount of assets seized.
    /// @return The amount of assets repaid.
    function liquidate(
        MarketParams memory marketParams,
        address borrower,
        uint256 seizedAssets,
        uint256 repaidShares,
        bytes memory data
    ) external returns (uint256, uint256);

    /// @notice Executes a flash loan.
    /// @dev Flash loans have access to the whole balance of the contract (the liquidity and deposited collateral of all
    /// markets combined, plus donations).
    /// @dev Warning: Not ERC-3156 compliant but compatibility is easily reached:
    /// - `flashFee` is zero.
    /// - `maxFlashLoan` is the token's balance of this contract.
    /// - The receiver of `assets` is the caller.
    /// @param token The token to flash loan.
    /// @param assets The amount of assets to flash loan.
    /// @param data Arbitrary data to pass to the `onMorphoFlashLoan` callback.
    function flashLoan(
        address token,
        uint256 assets,
        bytes calldata data
    ) external;

    /// @notice Sets the authorization for `authorized` to manage `msg.sender`'s positions.
    /// @param authorized The authorized address.
    /// @param newIsAuthorized The new authorization status.
    function setAuthorization(
        address authorized,
        bool newIsAuthorized
    ) external;

    /// @notice Sets the authorization for `authorization.authorized` to manage `authorization.authorizer`'s positions.
    /// @dev Warning: Reverts if the signature has already been submitted.
    /// @dev The signature is malleable, but it has no impact on the security here.
    /// @dev The nonce is passed as argument to be able to revert with a different error message.
    /// @param authorization The `Authorization` struct.
    /// @param signature The signature.
    function setAuthorizationWithSig(
        Authorization calldata authorization,
        Signature calldata signature
    ) external;

    /// @notice Accrues interest for the given market `marketParams`.
    function accrueInterest(MarketParams memory marketParams) external;

    /// @notice Returns the data stored on the different `slots`.
    function extSloads(
        bytes32[] memory slots
    ) external view returns (bytes32[] memory);
}

/// @dev This interface is inherited by Morpho so that function signatures are checked by the compiler.
/// @dev Consider using the IMorpho interface instead of this one.
interface IMorphoStaticTyping is IMorphoBase {
    /// @notice The state of the position of `user` on the market corresponding to `id`.
    /// @dev Warning: For `feeRecipient`, `supplyShares` does not contain the accrued shares since the last interest
    /// accrual.
    function position(
        Id id,
        address user
    )
        external
        view
        returns (
            uint256 supplyShares,
            uint128 borrowShares,
            uint128 collateral
        );

    /// @notice The state of the market corresponding to `id`.
    /// @dev Warning: `totalSupplyAssets` does not contain the accrued interest since the last interest accrual.
    /// @dev Warning: `totalBorrowAssets` does not contain the accrued interest since the last interest accrual.
    /// @dev Warning: `totalSupplyShares` does not contain the accrued shares by `feeRecipient` since the last interest
    /// accrual.
    function market(
        Id id
    )
        external
        view
        returns (
            uint128 totalSupplyAssets,
            uint128 totalSupplyShares,
            uint128 totalBorrowAssets,
            uint128 totalBorrowShares,
            uint128 lastUpdate,
            uint128 fee
        );

    /// @notice The market params corresponding to `id`.
    /// @dev This mapping is not used in Morpho. It is there to enable reducing the cost associated to calldata on layer
    /// 2s by creating a wrapper contract with functions that take `id` as input instead of `marketParams`.
    function idToMarketParams(
        Id id
    )
        external
        view
        returns (
            address loanToken,
            address collateralToken,
            address oracle,
            address irm,
            uint256 lltv
        );
}

/// @title IMorpho
/// @author Morpho Labs
/// @custom:contact security@morpho.org
/// @dev Use this interface for Morpho to have access to all the functions with the appropriate function signatures.
interface IMorpho is IMorphoBase {
    /// @notice The state of the position of `user` on the market corresponding to `id`.
    /// @dev Warning: For `feeRecipient`, `p.supplyShares` does not contain the accrued shares since the last interest
    /// accrual.
    function position(
        Id id,
        address user
    ) external view returns (Position memory p);

    /// @notice The state of the market corresponding to `id`.
    /// @dev Warning: `m.totalSupplyAssets` does not contain the accrued interest since the last interest accrual.
    /// @dev Warning: `m.totalBorrowAssets` does not contain the accrued interest since the last interest accrual.
    /// @dev Warning: `m.totalSupplyShares` does not contain the accrued shares by `feeRecipient` since the last
    /// interest accrual.
    function market(Id id) external view returns (Market memory m);

    /// @notice The market params corresponding to `id`.
    /// @dev This mapping is not used in Morpho. It is there to enable reducing the cost associated to calldata on layer
    /// 2s by creating a wrapper contract with functions that take `id` as input instead of `marketParams`.
    function idToMarketParams(
        Id id
    ) external view returns (MarketParams memory);
}

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

pragma solidity ^0.8.0;

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

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

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

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

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

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

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

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

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

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

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

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

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

        return true;
    }

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

        _beforeTokenTransfer(from, to, amount);

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

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

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

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

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

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

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

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

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

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

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

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

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

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

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

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

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.18;

import {Math} from "@openzeppelin/contracts/utils/math/Math.sol";
import {IERC4626} from "@openzeppelin/contracts/interfaces/IERC4626.sol";

import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {BaseHealthCheck, ERC20} from "@periphery/Bases/HealthCheck/BaseHealthCheck.sol";

/**
 * @title Base Lender Borrower
 */
abstract contract BaseLenderBorrower is BaseHealthCheck {
    using SafeERC20 for ERC20;

    uint256 internal constant WAD = 1e18;

    /// The token we will be borrowing/supplying.
    address public immutable borrowToken;

    /// If set to true, the strategy will not try to repay debt by selling rewards or asset.
    bool public leaveDebtBehind;

    /// @notice Target Loan-To-Value (LTV) multiplier in Basis Points
    /// @dev Represents the ratio up to which we will borrow, relative to the liquidation threshold.
    /// LTV is the debt-to-collateral ratio. Default is set to 70% of the liquidation LTV.
    uint16 public targetLTVMultiplier;

    /// @notice Warning Loan-To-Value (LTV) multiplier in Basis Points
    /// @dev Represents the ratio at which we will start repaying the debt to avoid liquidation
    /// Default is set to 80% of the liquidation LTV
    uint16 public warningLTVMultiplier; // 80% of liquidation LTV

    /// @notice Slippage tolerance (in basis points) for swaps
    uint64 public slippage;

    /// @notice Deposit limit for the strategy.
    uint256 public depositLimit;

    /// The max the base fee (in gwei) will be for a tend
    uint256 public maxGasPriceToTend;

    /// Thresholds: lower limit on how much base token can be borrowed at a time.
    uint256 internal minAmountToBorrow;

    /// The lender vault that will be used to lend and borrow.
    IERC4626 public immutable lenderVault;

    /**
     * @param _asset The address of the asset we are lending/borrowing.
     * @param _name The name of the strategy.
     * @param _borrowToken The address of the borrow token.
     */
    constructor(
        address _asset,
        string memory _name,
        address _borrowToken,
        address _lenderVault
    ) BaseHealthCheck(_asset, _name) {
        borrowToken = _borrowToken;

        // Set default variables
        depositLimit = type(uint256).max;
        targetLTVMultiplier = 7_000;
        warningLTVMultiplier = 8_000;
        leaveDebtBehind = false;
        maxGasPriceToTend = 200 * 1e9;
        slippage = 500;

        // Allow for address(0) for versions that don't use 4626 vault.
        if (_lenderVault != address(0)) {
            lenderVault = IERC4626(_lenderVault);
            require(lenderVault.asset() == _borrowToken, "!lenderVault");
            ERC20(_borrowToken).forceApprove(_lenderVault, type(uint256).max);
        }
    }

    /// ----------------- SETTERS -----------------

    /**
     * @notice Set the deposit limit for the strategy
     * @param _depositLimit New deposit limit
     */
    function setDepositLimit(uint256 _depositLimit) external onlyManagement {
        depositLimit = _depositLimit;
    }

    /**
     * @notice Set the target and warning LTV multipliers
     * @param _targetLTVMultiplier New target LTV multiplier
     * @param _warningLTVMultiplier New warning LTV multiplier
     * @dev Target must be less than warning, warning must be <= 9000, target cannot be 0
     */
    function setLtvMultipliers(
        uint16 _targetLTVMultiplier,
        uint16 _warningLTVMultiplier
    ) external onlyManagement {
        require(
            _warningLTVMultiplier <= 9_000 &&
                _targetLTVMultiplier < _warningLTVMultiplier &&
                _targetLTVMultiplier != 0,
            "invalid LTV"
        );
        targetLTVMultiplier = _targetLTVMultiplier;
        warningLTVMultiplier = _warningLTVMultiplier;
    }

    /**
     * @notice Set whether to leave debt behind
     * @param _leaveDebtBehind New leave debt behind setting
     */
    function setLeaveDebtBehind(bool _leaveDebtBehind) external onlyManagement {
        leaveDebtBehind = _leaveDebtBehind;
    }

    /**
     * @notice Set the maximum gas price for tending
     * @param _maxGasPriceToTend New maximum gas price
     */
    function setMaxGasPriceToTend(
        uint256 _maxGasPriceToTend
    ) external onlyManagement {
        maxGasPriceToTend = _maxGasPriceToTend;
    }

    /**
     * @notice Set the slippage tolerance
     * @param _slippage New slippage tolerance in basis points
     */
    function setSlippage(uint256 _slippage) external onlyManagement {
        require(_slippage < MAX_BPS, "slippage");
        slippage = uint64(_slippage);
    }

    /*//////////////////////////////////////////////////////////////
                NEEDED TO BE OVERRIDDEN BY STRATEGIST
    //////////////////////////////////////////////////////////////*/

    /**
     * @dev Should deploy up to '_amount' of 'asset' in the yield source.
     *
     * This function is called at the end of a {deposit} or {mint}
     * call. Meaning that unless a whitelist is implemented it will
     * be entirely permissionless and thus can be sandwiched or otherwise
     * manipulated.
     *
     * @param _amount The amount of 'asset' that the strategy should attempt
     * to deposit in the yield source.
     */
    function _deployFunds(uint256 _amount) internal virtual override {
        _leveragePosition(_amount);
    }

    /**
     * @dev Will attempt to free the '_amount' of 'asset'.
     *
     * The amount of 'asset' that is already loose has already
     * been accounted for.
     *
     * This function is called during {withdraw} and {redeem} calls.
     * Meaning that unless a whitelist is implemented it will be
     * entirely permissionless and thus can be sandwiched or otherwise
     * manipulated.
     *
     * Should not rely on asset.balanceOf(address(this)) calls other than
     * for diff accounting purposes.
     *
     * Any difference between `_amount` and what is actually freed will be
     * counted as a loss and passed on to the withdrawer. This means
     * care should be taken in times of illiquidity. It may be better to revert
     * if withdraws are simply illiquid so not to realize incorrect losses.
     *
     * @param _amount, The amount of 'asset' to be freed.
     */
    function _freeFunds(uint256 _amount) internal virtual override {
        _liquidatePosition(_amount);
    }

    /**
     * @dev Internal function to harvest all rewards, redeploy any idle
     * funds and return an accurate accounting of all funds currently
     * held by the Strategy.
     *
     * This should do any needed harvesting, rewards selling, accrual,
     * redepositing etc. to get the most accurate view of current assets.
     *
     * NOTE: All applicable assets including loose assets should be
     * accounted for in this function.
     *
     * Care should be taken when relying on oracles or swap values rather
     * than actual amounts as all Strategy profit/loss accounting will
     * be done based on this returned value.
     *
     * This can still be called post a shutdown, a strategist can check
     * `TokenizedStrategy.isShutdown()` to decide if funds should be
     * redeployed or simply realize any profits/losses.
     *
     * @return _totalAssets A trusted and accurate account for the total
     * amount of 'asset' the strategy currently holds including idle funds.
     */
    function _harvestAndReport()
        internal
        virtual
        override
        returns (uint256 _totalAssets)
    {
        /// 1. claim rewards, 2. even borrowToken deposits and borrows 3. sell remainder of rewards to asset.
        _claimAndSellRewards();

        /// Leverage all the asset we have or up to the supply cap.
        /// We want check our leverage even if balance of asset is 0.
        _leveragePosition(
            Math.min(balanceOfAsset(), availableDepositLimit(address(this)))
        );

        /// Base token owed should be 0 here but we count it just in case
        _totalAssets =
            balanceOfAsset() +
            balanceOfCollateral() -
            _borrowTokenOwedInAsset();
    }

    /*//////////////////////////////////////////////////////////////
                    OPTIONAL TO OVERRIDE BY STRATEGIST
    //////////////////////////////////////////////////////////////*/

    /**
     * @dev Optional function for strategist to override that can
     *  be called in between reports.
     *
     * If '_tend' is used tendTrigger() will also need to be overridden.
     *
     * This call can only be called by a permissioned role so may be
     * through protected relays.
     *
     * This can be used to harvest and compound rewards, deposit idle funds,
     * perform needed position maintenance or anything else that doesn't need
     * a full report for.
     *
     *   EX: A strategy that can not deposit funds without getting
     *       sandwiched can use the tend when a certain threshold
     *       of idle to totalAssets has been reached.
     *
     * The TokenizedStrategy contract will do all needed debt and idle updates
     * after this has finished and will have no effect on PPS of the strategy
     * till report() is called.
     *
     * @param _totalIdle The current amount of idle funds that are available to deploy.
     */
    function _tend(uint256 _totalIdle) internal virtual override {
        /// If the cost to borrow > rewards rate we will pull out all funds to not report a loss
        if (getNetBorrowApr(0) > getNetRewardApr(0)) {
            /// Liquidate everything so not to report a loss
            _liquidatePosition(balanceOfCollateral());
            /// Return since we don't asset to do anything else
            return;
        }

        /// Else we need to either adjust LTV up or down.
        _leveragePosition(
            Math.min(_totalIdle, availableDepositLimit(address(this)))
        );
    }

    /**
     * @dev Optional trigger to override if tend() will be used by the strategy.
     * This must be implemented if the strategy hopes to invoke _tend().
     *
     * @return . Should return true if tend() should be called by keeper or false if not.
     */
    function _tendTrigger() internal view virtual override returns (bool) {
        /// If we are in danger of being liquidated tend no matter what
        if (_isLiquidatable()) return true;

        if (TokenizedStrategy.totalAssets() == 0) return false;

        /// We adjust position if:
        /// 1. LTV ratios are not in the HEALTHY range (either we take on more debt or repay debt)
        /// 2. costs are acceptable
        uint256 collateralInUsd = _toUsd(balanceOfCollateral(), address(asset));
        uint256 debtInUsd = _toUsd(balanceOfDebt(), borrowToken);
        uint256 currentLTV = collateralInUsd > 0
            ? (debtInUsd * WAD) / collateralInUsd
            : 0;

        /// Check if we are over our warning LTV
        if (currentLTV > _getWarningLTV()) {
            return true;
        }

        if (_isSupplyPaused() || _isBorrowPaused()) return false;

        uint256 targetLTV = _getTargetLTV();

        /// If we are still levered and Borrowing costs are too high.
        if (currentLTV != 0 && getNetBorrowApr(0) > getNetRewardApr(0)) {
            /// Tend if base fee is acceptable.
            return _isBaseFeeAcceptable();

            /// IF we are lower than our target. (we need a 10% (1000bps) difference)
        } else if ((currentLTV < targetLTV && targetLTV - currentLTV > 1e17)) {
            /// Make sure the increase in debt would keep borrowing costs healthy.
            uint256 targetDebtUsd = (collateralInUsd * targetLTV) / WAD;

            uint256 amountToBorrowUsd;
            unchecked {
                amountToBorrowUsd = targetDebtUsd - debtInUsd; // safe bc we checked ratios
            }

            /// Convert to borrowToken
            uint256 amountToBorrowBT = Math.min(
                _fromUsd(amountToBorrowUsd, borrowToken),
                Math.min(_lenderMaxDeposit(), _maxBorrowAmount())
            );

            if (amountToBorrowBT == 0) return false;

            /// We want to make sure that the reward apr > borrow apr so we don't report a loss
            /// Borrowing will cause the borrow apr to go up and the rewards apr to go down
            if (
                getNetBorrowApr(amountToBorrowBT) <
                getNetRewardApr(amountToBorrowBT)
            ) {
                /// Borrowing costs are healthy and WE NEED TO TAKE ON MORE DEBT
                return _isBaseFeeAcceptable();
            }
        }

        return false;
    }

    /**
     * @notice Gets the max amount of `asset` that an address can deposit.
     * @dev Defaults to an unlimited amount for any address. But can
     * be overridden by strategists.
     *
     * This function will be called before any deposit or mints to enforce
     * any limits desired by the strategist. This can be used for either a
     * traditional deposit limit or for implementing a whitelist etc.
     *
     *   EX:
     *      if(isAllowed[_owner]) return super.availableDepositLimit(_owner);
     *
     * This does not need to take into account any conversion rates
     * from shares to assets. But should know that any non max uint256
     * amounts may be converted to shares. So it is recommended to keep
     * custom amounts low enough as not to cause overflow when multiplied
     * by `totalSupply`.
     *
     * @param . The address that is depositing into the strategy.
     * @return . The available amount the `_owner` can deposit in terms of `asset`
     */
    function availableDepositLimit(
        address /*_owner*/
    ) public view virtual override returns (uint256) {
        /// We need to be able to both supply and withdraw on deposits.
        if (_isSupplyPaused() || _isBorrowPaused()) return 0;

        uint256 currentAssets = TokenizedStrategy.totalAssets();
        uint256 limit = depositLimit > currentAssets
            ? depositLimit - currentAssets
            : 0;

        uint256 maxDeposit = Math.min(_maxCollateralDeposit(), limit);
        uint256 maxBorrow = Math.min(_lenderMaxDeposit(), _maxBorrowAmount());

        // Either the max supply or the max we could borrow / targetLTV.
        return
            Math.min(
                maxDeposit,
                _fromUsd(
                    (_toUsd(maxBorrow, borrowToken) * WAD) / _getTargetLTV(),
                    address(asset)
                )
            );
    }

    /**
     * @notice Gets the max amount of `asset` that can be withdrawn.
     * @dev Defaults to an unlimited amount for any address. But can
     * be overridden by strategists.
     *
     * This function will be called before any withdraw or redeem to enforce
     * any limits desired by the strategist. This can be used for illiquid
     * or sandwichable strategies. It should never be lower than `totalIdle`.
     *
     *   EX:
     *       return TokenIzedStrategy.totalIdle();
     *
     * This does not need to take into account the `_owner`'s share balance
     * or conversion rates from shares to assets.
     *
     * @param . The address that is withdrawing from the strategy.
     * @return . The available amount that can be withdrawn in terms of `asset`
     */
    function availableWithdrawLimit(
        address /*_owner*/
    ) public view virtual override returns (uint256) {
        /// Default liquidity is the balance of collateral + 1 for rounding.
        uint256 liquidity = balanceOfCollateral() + 1;
        uint256 lenderLiquidity = _lenderMaxWithdraw();

        /// If we can't withdraw or supply, set liquidity = 0.
        if (lenderLiquidity < balanceOfLentAssets()) {
            /// Adjust liquidity based on withdrawing the full amount of debt.
            unchecked {
                liquidity = ((_fromUsd(
                    _toUsd(lenderLiquidity, borrowToken),
                    address(asset)
                ) * WAD) / _getTargetLTV());
            }
        }

        return balanceOfAsset() + liquidity;
    }

    /// ----------------- INTERNAL FUNCTIONS SUPPORT ----------------- \\

    /**
     * @notice Adjusts the leverage position of the strategy based on current and target Loan-to-Value (LTV) ratios.
     * @dev All debt and collateral calculations are done in USD terms. LTV values are represented in 1e18 format.
     * @param _amount The amount to be supplied to adjust the leverage position,
     */
    function _leveragePosition(uint256 _amount) internal virtual {
        /// Supply the given amount to the strategy.
        // This function internally checks for zero amounts.
        _supplyCollateral(_amount);

        uint256 collateralInUsd = _toUsd(balanceOfCollateral(), address(asset));

        /// Convert debt to USD
        uint256 debtInUsd = _toUsd(balanceOfDebt(), borrowToken);

        /// LTV numbers are always in WAD
        uint256 currentLTV = collateralInUsd > 0
            ? (debtInUsd * WAD) / collateralInUsd
            : 0;
        uint256 targetLTV = _getTargetLTV(); // 70% under default liquidation Threshold

        /// decide in which range we are and act accordingly:
        /// SUBOPTIMAL(borrow) (e.g. from 0 to 70% liqLTV)
        /// HEALTHY(do nothing) (e.g. from 70% to 80% liqLTV)
        /// UNHEALTHY(repay) (e.g. from 80% to 100% liqLTV)
        if (targetLTV > currentLTV) {
            /// SUBOPTIMAL RATIO: our current Loan-to-Value is lower than what we want

            /// we need to take on more debt
            uint256 targetDebtUsd = (collateralInUsd * targetLTV) / WAD;

            uint256 amountToBorrowUsd;
            unchecked {
                amountToBorrowUsd = targetDebtUsd - debtInUsd; // safe bc we checked ratios
            }

            /// convert to borrowToken
            uint256 amountToBorrowBT = Math.min(
                _fromUsd(amountToBorrowUsd, borrowToken),
                Math.min(_lenderMaxDeposit(), _maxBorrowAmount())
            );

            /// We want to make sure that the reward apr > borrow apr so we don't report a loss
            /// Borrowing will cause the borrow apr to go up and the rewards apr to go down
            if (
                getNetBorrowApr(amountToBorrowBT) >
                getNetRewardApr(amountToBorrowBT)
            ) {
                /// If we would push it over the limit don't borrow anything
                amountToBorrowBT = 0;
            }

            /// Need to have at least the min threshold
            if (amountToBorrowBT > minAmountToBorrow) {
                _borrow(amountToBorrowBT);
            }
        } else if (currentLTV > _getWarningLTV()) {
            /// UNHEALTHY RATIO
            /// we repay debt to set it to targetLTV
            uint256 targetDebtUsd = (targetLTV * collateralInUsd) / WAD;

            /// Withdraw the difference from the Depositor
            _withdrawFromLender(
                _fromUsd(debtInUsd - targetDebtUsd, borrowToken)
            );

            /// Repay the borrowToken debt.
            _repayTokenDebt();
        }

        // Deposit any loose base token that was borrowed.
        uint256 borrowTokenBalance = balanceOfBorrowToken();
        if (borrowTokenBalance > 0) {
            _lendBorrowToken(borrowTokenBalance);
        }
    }

    /**
     * @notice Liquidates the position to ensure the needed amount while maintaining healthy ratios.
     * @dev All debt, collateral, and needed amounts are calculated in USD. The needed amount is represented in the asset.
     * @param _needed The amount required in the asset.
     */
    function _liquidatePosition(uint256 _needed) internal virtual {
        /// Cache balance for withdraw checks
        uint256 balance = balanceOfAsset();

        /// We first repay whatever we need to repay to keep healthy ratios
        _withdrawFromLender(_calculateAmountToRepay(_needed));

        /// we repay the borrowToken debt with the amount withdrawn from the vault
        _repayTokenDebt();

        // Withdraw as much as we can up to the amount needed while maintaining a health ltv
        _withdrawCollateral(Math.min(_needed, _maxWithdrawal()));

        /// We check if we withdrew less than expected, and we do have not more borrowToken
        /// left AND should harvest or buy borrowToken with asset (potentially realising losses)
        if (
            /// if we didn't get enough
            _needed > balanceOfAsset() - balance &&
            /// still some debt remaining
            balanceOfDebt() > 0 &&
            /// but no capital to repay
            balanceOfLentAssets() == 0 &&
            /// And the leave debt flag is false.
            !leaveDebtBehind
        ) {
            /// using this part of code may result in losses but it is necessary to unlock full collateral
            /// in case of wind down. This should only occur when depleting the strategy so we buy the full
            /// amount of our remaining debt. We buy borrowToken first with available rewards then with asset.
            _buyBorrowToken();

            /// we repay debt to actually unlock collateral
            /// after this, balanceOfDebt should be 0
            _repayTokenDebt();

            /// then we try withdraw once more
            /// still withdraw with target LTV since management can potentially save any left over manually
            _withdrawCollateral(_maxWithdrawal());
        }
    }

    /**
     * @notice Calculates max amount that can be withdrawn while maintaining healthy LTV ratio
     * @dev Considers current collateral and debt amounts
     * @return The max amount of collateral available for withdrawal
     */
    function _maxWithdrawal() internal view virtual returns (uint256) {
        uint256 collateral = balanceOfCollateral();
        uint256 debt = balanceOfDebt();

        /// If there is no debt we can withdraw everything
        if (debt == 0) return collateral;

        uint256 debtInUsd = _toUsd(debt, borrowToken);

        /// What we need to maintain a health LTV
        uint256 neededCollateral = _fromUsd(
            (debtInUsd * WAD) / _getTargetLTV(),
            address(asset)
        );

        /// We need more collateral so we cant withdraw anything
        if (neededCollateral > collateral) {
            return 0;
        }

        /// Return the difference in terms of asset
        unchecked {
            return collateral - neededCollateral;
        }
    }

    /**
     * @notice Calculates amount of debt to repay to maintain healthy LTV ratio
     * @dev Considers target LTV, amount being withdrawn, and current collateral/debt
     * @param amount The withdrawal amount
     * @return The amount of debt to repay
     */
    function _calculateAmountToRepay(
        uint256 amount
    ) internal view virtual returns (uint256) {
        if (amount == 0) return 0;
        uint256 collateral = balanceOfCollateral();
        /// To unlock all collateral we must repay all the debt
        if (amount >= collateral) return balanceOfDebt();

        /// We check if the collateral that we are withdrawing leaves us in a risky range, we then take action
        uint256 newCollateralUsd = _toUsd(collateral - amount, address(asset));

        uint256 targetDebtUsd = (newCollateralUsd * _getTargetLTV()) / WAD;
        uint256 targetDebt = _fromUsd(targetDebtUsd, borrowToken);
        uint256 currentDebt = balanceOfDebt();
        /// Repay only if our target debt is lower than our current debt
        return targetDebt < currentDebt ? currentDebt - targetDebt : 0;
    }

    /**
     * @notice Repays outstanding debt with available base tokens
     * @dev Repays debt by supplying base tokens up to the min of available balance and debt amount
     */
    function _repayTokenDebt() internal virtual {
        /// We cannot pay more than loose balance or more than we owe
        _repay(Math.min(balanceOfBorrowToken(), balanceOfDebt()));
    }

    /**
     * @notice Withdraws a specified amount of `borrowToken` from the lender.
     * @param amount The amount of the borrowToken to withdraw.
     */
    function _withdrawFromLender(uint256 amount) internal virtual {
        uint256 balancePrior = balanceOfBorrowToken();
        /// Only withdraw what we don't already have free
        amount = balancePrior >= amount ? 0 : amount - balancePrior;

        /// Make sure we have enough balance.
        amount = Math.min(amount, _lenderMaxWithdraw());

        if (amount == 0) return;

        _withdrawBorrowToken(amount);
    }

    // ----------------- INTERNAL WRITE FUNCTIONS ----------------- \\

    /**
     * @notice Supplies a specified amount of `asset` as collateral.
     * @param amount The amount of the asset to supply.
     */
    function _supplyCollateral(uint256 amount) internal virtual;

    /**
     * @notice Withdraws a specified amount of collateral.
     * @param amount The amount of the collateral to withdraw.
     */
    function _withdrawCollateral(uint256 amount) internal virtual;

    /**
     * @notice Borrows a specified amount of `borrowToken`.
     * @param amount The amount of the borrowToken to borrow.
     */
    function _borrow(uint256 amount) internal virtual;

    /**
     * @notice Repays a specified amount of `borrowToken`.
     * @param amount The amount of the borrowToken to repay.
     */
    function _repay(uint256 amount) internal virtual;

    /**
     * @notice Lends a specified amount of `borrowToken`.
     * @param amount The amount of the borrowToken to lend.
     */
    function _lendBorrowToken(uint256 amount) internal virtual {
        lenderVault.deposit(amount, address(this));
    }

    /**
     * @notice Withdraws a specified amount of `borrowToken`.
     * @param amount The amount of the borrowToken to withdraw.
     */
    function _withdrawBorrowToken(uint256 amount) internal virtual {
        // Use previewWithdraw to round up.
        uint256 shares = Math.min(
            lenderVault.previewWithdraw(amount),
            lenderVault.balanceOf(address(this))
        );
        lenderVault.redeem(shares, address(this), address(this));
    }

    // ----------------- INTERNAL VIEW FUNCTIONS ----------------- \\

    /**
     * @notice Gets asset price returned 1e8
     * @param _asset The asset address
     * @return price asset price
     */
    function _getPrice(
        address _asset
    ) internal view virtual returns (uint256 price);

    /**
     * @notice Checks if lending or borrowing is paused
     * @return True if paused, false otherwise
     */
    function _isSupplyPaused() internal view virtual returns (bool);

    /**
     * @notice Checks if borrowing is paused
     * @return True if paused, false otherwise
     */
    function _isBorrowPaused() internal view virtual returns (bool);

    /**
     * @notice Checks if the strategy is liquidatable
     * @return True if liquidatable, false otherwise
     */
    function _isLiquidatable() internal view virtual returns (bool);

    /**
     * @notice Gets the supply cap for the collateral asset if any
     * @return The supply cap
     */
    function _maxCollateralDeposit() internal view virtual returns (uint256);

    /**
     * @notice Gets the max amount of `borrowToken` that could be borrowed
     * @return The max borrow amount
     */
    function _maxBorrowAmount() internal view virtual returns (uint256);

    /**
     * @notice Gets the max amount of `borrowToken` that could be deposited to the lender
     * @return The max deposit amount
     */
    function _lenderMaxDeposit() internal view virtual returns (uint256) {
        return lenderVault.maxDeposit(address(this));
    }

    /**
     * @notice Gets the amount of borrowToken that could be withdrawn from the lender
     * @return The lender liquidity
     */
    function _lenderMaxWithdraw() internal view virtual returns (uint256) {
        return
            lenderVault.convertToAssets(lenderVault.maxRedeem(address(this)));
    }

    /**
     * @notice Gets net borrow APR from depositor
     * @param newAmount Simulated supply amount
     * @return Net borrow APR
     */
    function getNetBorrowApr(
        uint256 newAmount
    ) public view virtual returns (uint256);

    /**
     * @notice Gets net reward APR from depositor
     * @param newAmount Simulated supply amount
     * @return Net reward APR
     */
    function getNetRewardApr(
        uint256 newAmount
    ) public view virtual returns (uint256);

    /**
     * @notice Gets liquidation collateral factor for asset
     * @return Liquidation collateral factor
     */
    function getLiquidateCollateralFactor()
        public
        view
        virtual
        returns (uint256);

    /**
     * @notice Gets supplied collateral balance
     * @return Collateral balance
     */
    function balanceOfCollateral() public view virtual returns (uint256);

    /**
     * @notice Gets current borrow balance
     * @return Borrow balance
     */
    function balanceOfDebt() public view virtual returns (uint256);

    /**
     * @notice Gets full depositor balance
     * @return Depositor balance
     */
    function balanceOfLentAssets() public view virtual returns (uint256) {
        return
            lenderVault.convertToAssets(lenderVault.balanceOf(address(this)));
    }

    /**
     * @notice Gets available balance of asset token
     * @return The asset token balance
     */
    function balanceOfAsset() public view virtual returns (uint256) {
        return asset.balanceOf(address(this));
    }

    /**
     * @notice Gets available base token balance
     * @return Base token balance
     */
    function balanceOfBorrowToken() public view virtual returns (uint256) {
        return ERC20(borrowToken).balanceOf(address(this));
    }

    /**
     * @notice Gets net owed base tokens (borrowed - supplied)
     * @return Net base tokens owed
     */
    function borrowTokenOwedBalance() public view virtual returns (uint256) {
        uint256 have = balanceOfLentAssets() + balanceOfBorrowToken();
        uint256 owe = balanceOfDebt();

        /// If they are the same or supply > debt return 0
        if (have >= owe) return 0;

        unchecked {
            return owe - have;
        }
    }

    /**
     * @notice Gets base tokens owed in asset terms
     * @return owed tokens owed in asset value
     */
    function _borrowTokenOwedInAsset()
        internal
        view
        virtual
        returns (uint256 owed)
    {
        /// Don't do conversions unless it's a non-zero false.
        uint256 owedInBase = borrowTokenOwedBalance();
        if (owedInBase != 0) {
            owed = _fromUsd(_toUsd(owedInBase, borrowToken), address(asset));
        }
    }

    /**
     * @notice Calculates current loan-to-value ratio
     * @dev Converts collateral and debt values to USD
     * @return Current LTV in 1e18 format
     */
    function getCurrentLTV() external view virtual returns (uint256) {
        uint256 collateral = balanceOfCollateral();

        if (collateral == 0) return 0;

        unchecked {
            return
                (_toUsd(balanceOfDebt(), borrowToken) * WAD) /
                _toUsd(collateral, address(asset));
        }
    }

    /**
     * @notice Gets target loan-to-value ratio
     * @dev Calculates based on liquidation threshold and multiplier
     * @return Target LTV in 1e18 format
     */
    function _getTargetLTV() internal view virtual returns (uint256) {
        unchecked {
            return
                (getLiquidateCollateralFactor() * targetLTVMultiplier) /
                MAX_BPS;
        }
    }

    /**
     * @notice Gets warning loan-to-value ratio
     * @dev Calculates based on liquidation threshold and multiplier
     * @return Warning LTV in 1e18 format
     */
    function _getWarningLTV() internal view virtual returns (uint256) {
        unchecked {
            return
                (getLiquidateCollateralFactor() * warningLTVMultiplier) /
                MAX_BPS;
        }
    }

    /**
     * @notice Converts a token amount to USD value
     * @dev This assumes _getPrice returns constants 1e8 price
     * @param _amount The token amount
     * @param _token The token address
     * @return The USD value scaled by 1e8
     */
    function _toUsd(
        uint256 _amount,
        address _token
    ) internal view virtual returns (uint256) {
        if (_amount == 0) return 0;
        unchecked {
            return
                (_amount * _getPrice(_token)) /
                (10 ** ERC20(_token).decimals());
        }
    }

    /**
     * @notice Converts a USD amount to token value
     * @dev This assumes _getPrice returns constants 1e8 price
     * @param _amount The USD amount (scaled by 1e8)
     * @param _token The token address
     * @return The token amount
     */
    function _fromUsd(
        uint256 _amount,
        address _token
    ) internal view virtual returns (uint256) {
        if (_amount == 0) return 0;
        unchecked {
            return
                (_amount * (10 ** ERC20(_token).decimals())) /
                _getPrice(_token);
        }
    }

    /// ----------------- HARVEST / TOKEN CONVERSIONS -----------------

    /**
     * @notice Claims reward tokens.
     */
    function _claimRewards() internal virtual;

    /**
     * @notice Claims and sells available reward tokens
     * @dev Handles claiming, selling rewards for borrow tokens if needed, and selling remaining rewards for asset
     */
    function _claimAndSellRewards() internal virtual;

    /**
     * @dev Buys the borrow token using the strategy's assets.
     * This function should only ever be called when withdrawing all funds from the strategy if there is debt left over.
     * Initially, it tries to sell rewards for the needed amount of base token, then it will swap assets.
     * Using this function in a standard withdrawal can cause it to be sandwiched, which is why rewards are used first.
     */
    function _buyBorrowToken() internal virtual;

    /**
     * @dev Will swap from the base token => underlying asset.
     */
    function _sellBorrowToken(uint256 _amount) internal virtual;

    /**
     * @notice Estimates swap output accounting for slippage
     * @param _amount Input amount
     * @param _from Input token
     * @param _to Output token
     * @return Estimated output amount
     */
    function _getAmountOut(
        uint256 _amount,
        address _from,
        address _to
    ) internal view virtual returns (uint256) {
        if (_amount == 0) return 0;

        return
            (_fromUsd(_toUsd(_amount, _from), _to) * (MAX_BPS - slippage)) /
            MAX_BPS;
    }

    /**
     * @notice Checks if base fee is acceptable
     * @return True if base fee is below threshold
     */
    function _isBaseFeeAcceptable() internal view virtual returns (bool) {
        return block.basefee <= maxGasPriceToTend;
    }

    /**
     * @dev Optional function for a strategist to override that will
     * allow management to manually withdraw deployed funds from the
     * yield source if a strategy is shutdown.
     *
     * This should attempt to free `_amount`, noting that `_amount` may
     * be more than is currently deployed.
     *
     * NOTE: This will not realize any profits or losses. A separate
     * {report} will be needed in order to record any profit/loss. If
     * a report may need to be called after a shutdown it is important
     * to check if the strategy is shutdown during {_harvestAndReport}
     * so that it does not simply re-deploy all funds that had been freed.
     *
     * EX:
     *   if(freeAsset > 0 && !TokenizedStrategy.isShutdown()) {
     *       depositFunds...
     *    }
     *
     * @param _amount The amount of asset to attempt to free.
     */
    function _emergencyWithdraw(uint256 _amount) internal virtual override {
        _amount = Math.min(_amount, _lenderMaxWithdraw());
        if (_amount > 0) _withdrawBorrowToken(_amount);

        // Repay everything we can.
        _repayTokenDebt();

        // Withdraw all that makes sense.
        _withdrawCollateral(_maxWithdrawal());
    }

    // Manually Sell rewards
    function claimAndSellRewards() external virtual onlyEmergencyAuthorized {
        _claimAndSellRewards();
    }

    /// @notice Sell a specific amount of `borrowToken` -> asset.
    ///     The amount of borrowToken should be loose in the strategy before this is called
    ///     max uint input will sell any excess borrowToken we have.
    function sellBorrowToken(
        uint256 _amount
    ) external virtual onlyEmergencyAuthorized {
        if (_amount == type(uint256).max) {
            uint256 _balanceOfBorrowToken = balanceOfBorrowToken();
            uint256 have = balanceOfLentAssets() + _balanceOfBorrowToken;
            uint256 owe = balanceOfDebt();
            // Only sell excess if we have more than we owe
            _amount = have > owe
                ? Math.min(have - owe, _balanceOfBorrowToken)
                : 0;
        }
        _sellBorrowToken(_amount);
    }

    /// @notice Withdraw a specific amount of `_token`
    function manualWithdraw(
        address _token,
        uint256 _amount
    ) external virtual onlyEmergencyAuthorized {
        if (_token == borrowToken) {
            _withdrawBorrowToken(_amount);
        } else {
            _withdrawCollateral(_amount);
        }
    }

    // Manually repay debt with loose borrowToken already in the strategy.
    function manualRepayDebt() external virtual onlyEmergencyAuthorized {
        _repayTokenDebt();
    }
}

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

interface IChainlinkAggregator {
    function latestAnswer() external view returns (int256);

    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

/// @title IOracle
/// @author Morpho Labs
/// @custom:contact security@morpho.org
/// @notice Interface that oracles used by Morpho must implement.
/// @dev It is the user's responsibility to select markets with safe oracles.
interface IOracle {
    /// @notice Returns the price of 1 asset of collateral token quoted in 1 asset of loan token, scaled by 1e36.
    /// @dev It corresponds to the price of 10**(collateral token decimals) assets of collateral token quoted in
    /// 10**(loan token decimals) assets of loan token with `36 + loan token decimals - collateral token decimals`
    /// decimals of precision.
    function price() external view returns (uint256);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

import {Id, MarketParams, Market, IMorpho} from "../../../interfaces/morpho/IMorpho.sol";
import {IIrm} from "../../../interfaces/morpho/IIrm.sol";

import {MathLib} from "../MathLib.sol";
import {UtilsLib} from "../UtilsLib.sol";
import {MorphoLib} from "./MorphoLib.sol";
import {SharesMathLib} from "../SharesMathLib.sol";
import {MarketParamsLib} from "../MarketParamsLib.sol";

/// @title MorphoBalancesLib
/// @author Morpho Labs
/// @custom:contact security@morpho.org
/// @notice Helper library exposing getters with the expected value after interest accrual.
/// @dev This library is not used in Morpho itself and is intended to be used by integrators.
/// @dev The getter to retrieve the expected total borrow shares is not exposed because interest accrual does not apply
/// to it. The value can be queried directly on Morpho using `totalBorrowShares`.
library MorphoBalancesLib {
    using MathLib for uint256;
    using MathLib for uint128;
    using UtilsLib for uint256;
    using MorphoLib for IMorpho;
    using SharesMathLib for uint256;
    using MarketParamsLib for MarketParams;

    /// @notice Returns the expected market balances of a market after having accrued interest.
    /// @return The expected total supply assets.
    /// @return The expected total supply shares.
    /// @return The expected total borrow assets.
    /// @return The expected total borrow shares.
    function expectedMarketBalances(
        IMorpho morpho,
        MarketParams memory marketParams
    ) internal view returns (uint256, uint256, uint256, uint256) {
        Id id = marketParams.id();
        Market memory market = morpho.market(id);

        uint256 elapsed = block.timestamp - market.lastUpdate;

        // Skipped if elapsed == 0 or totalBorrowAssets == 0 because interest would be null, or if irm == address(0).
        if (
            elapsed != 0 &&
            market.totalBorrowAssets != 0 &&
            marketParams.irm != address(0)
        ) {
            uint256 borrowRate = IIrm(marketParams.irm).borrowRateView(
                marketParams,
                market
            );
            uint256 interest = market.totalBorrowAssets.wMulDown(
                borrowRate.wTaylorCompounded(elapsed)
            );
            market.totalBorrowAssets += interest.toUint128();
            market.totalSupplyAssets += interest.toUint128();

            if (market.fee != 0) {
                uint256 feeAmount = interest.wMulDown(market.fee);
                // The fee amount is subtracted from the total supply in this calculation to compensate for the fact
                // that total supply is already updated.
                uint256 feeShares = feeAmount.toSharesDown(
                    market.totalSupplyAssets - feeAmount,
                    market.totalSupplyShares
                );
                market.totalSupplyShares += feeShares.toUint128();
            }
        }

        return (
            market.totalSupplyAssets,
            market.totalSupplyShares,
            market.totalBorrowAssets,
            market.totalBorrowShares
        );
    }

    /// @notice Returns the expected total supply assets of a market after having accrued interest.
    function expectedTotalSupplyAssets(
        IMorpho morpho,
        MarketParams memory marketParams
    ) internal view returns (uint256 totalSupplyAssets) {
        (totalSupplyAssets, , , ) = expectedMarketBalances(
            morpho,
            marketParams
        );
    }

    /// @notice Returns the expected total borrow assets of a market after having accrued interest.
    function expectedTotalBorrowAssets(
        IMorpho morpho,
        MarketParams memory marketParams
    ) internal view returns (uint256 totalBorrowAssets) {
        (, , totalBorrowAssets, ) = expectedMarketBalances(
            morpho,
            marketParams
        );
    }

    /// @notice Returns the expected total supply shares of a market after having accrued interest.
    function expectedTotalSupplyShares(
        IMorpho morpho,
        MarketParams memory marketParams
    ) internal view returns (uint256 totalSupplyShares) {
        (, totalSupplyShares, , ) = expectedMarketBalances(
            morpho,
            marketParams
        );
    }

    /// @notice Returns the expected supply assets balance of `user` on a market after having accrued interest.
    /// @dev Warning: Wrong for `feeRecipient` because their supply shares increase is not taken into account.
    function expectedSupplyAssets(
        IMorpho morpho,
        MarketParams memory marketParams,
        address user
    ) internal view returns (uint256) {
        Id id = marketParams.id();
        uint256 supplyShares = morpho.supplyShares(id, user);
        (
            uint256 totalSupplyAssets,
            uint256 totalSupplyShares,
            ,

        ) = expectedMarketBalances(morpho, marketParams);

        return supplyShares.toAssetsDown(totalSupplyAssets, totalSupplyShares);
    }

    /// @notice Returns the expected borrow assets balance of `user` on a market after having accrued interest.
    /// @dev Warning: The expected balance is rounded up, so it may be greater than the market's expected total borrow
    /// assets.
    function expectedBorrowAssets(
        IMorpho morpho,
        MarketParams memory marketParams,
        address user
    ) internal view returns (uint256) {
        Id id = marketParams.id();
        uint256 borrowShares = morpho.borrowShares(id, user);
        (
            ,
            ,
            uint256 totalBorrowAssets,
            uint256 totalBorrowShares
        ) = expectedMarketBalances(morpho, marketParams);

        return borrowShares.toAssetsUp(totalBorrowAssets, totalBorrowShares);
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

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

/// @title SharesMathLib
/// @author Morpho Labs
/// @custom:contact security@morpho.org
/// @notice Shares management library.
/// @dev This implementation mitigates share price manipulations, using OpenZeppelin's method of virtual shares:
/// https://docs.openzeppelin.com/contracts/4.x/erc4626#inflation-attack.
library SharesMathLib {
    using MathLib for uint256;

    /// @dev The number of virtual shares has been chosen low enough to prevent overflows, and high enough to ensure
    /// high precision computations.
    /// @dev Virtual shares can never be redeemed for the assets they are entitled to, but it is assumed the share price
    /// stays low enough not to inflate these assets to a significant value.
    /// @dev Warning: The assets to which virtual borrow shares are entitled behave like unrealizable bad debt.
    uint256 internal constant VIRTUAL_SHARES = 1e6;

    /// @dev A number of virtual assets of 1 enforces a conversion rate between shares and assets when a market is
    /// empty.
    uint256 internal constant VIRTUAL_ASSETS = 1;

    /// @dev Calculates the value of `assets` quoted in shares, rounding down.
    function toSharesDown(
        uint256 assets,
        uint256 totalAssets,
        uint256 totalShares
    ) internal pure returns (uint256) {
        return
            assets.mulDivDown(
                totalShares + VIRTUAL_SHARES,
                totalAssets + VIRTUAL_ASSETS
            );
    }

    /// @dev Calculates the value of `shares` quoted in assets, rounding down.
    function toAssetsDown(
        uint256 shares,
        uint256 totalAssets,
        uint256 totalShares
    ) internal pure returns (uint256) {
        return
            shares.mulDivDown(
                totalAssets + VIRTUAL_ASSETS,
                totalShares + VIRTUAL_SHARES
            );
    }

    /// @dev Calculates the value of `assets` quoted in shares, rounding up.
    function toSharesUp(
        uint256 assets,
        uint256 totalAssets,
        uint256 totalShares
    ) internal pure returns (uint256) {
        return
            assets.mulDivUp(
                totalShares + VIRTUAL_SHARES,
                totalAssets + VIRTUAL_ASSETS
            );
    }

    /// @dev Calculates the value of `shares` quoted in assets, rounding up.
    function toAssetsUp(
        uint256 shares,
        uint256 totalAssets,
        uint256 totalShares
    ) internal pure returns (uint256) {
        return
            shares.mulDivUp(
                totalAssets + VIRTUAL_ASSETS,
                totalShares + VIRTUAL_SHARES
            );
    }
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity >=0.8.18;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import {ISwapRouter} from "../interfaces/Uniswap/V3/ISwapRouter.sol";
import {BaseSwapper} from "./BaseSwapper.sol";

/**
 *   @title UniswapV3Swapper
 *   @author Yearn.finance
 *   @dev This is a simple contract that can be inherited by any tokenized
 *   strategy that would like to use Uniswap V3 for swaps. It hold all needed
 *   logic to perform both exact input and exact output swaps.
 *
 *   The global address variables default to the ETH mainnet addresses but
 *   remain settable by the inheriting contract to allow for customization
 *   based on needs or chain its used on.
 *
 *   The only variables that are required to be set are the specific fees
 *   for each token pair. The inheriting contract can use the {_setUniFees}
 *   function to easily set this for any token pairs needed.
 */
contract UniswapV3Swapper is BaseSwapper {
    using SafeERC20 for ERC20;
    // Defaults to WETH on mainnet.
    address public base = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    // Defaults to Uniswap V3 router on mainnet.
    address public router = 0xE592427A0AEce92De3Edee1F18E0157C05861564;

    // Fees for the Uni V3 pools. Each fee should get set each way in
    // the mapping so no matter the direction the correct fee will get
    // returned for any two tokens.
    mapping(address => mapping(address => uint24)) public uniFees;

    /**
     * @dev All fess will default to 0 on creation. A strategist will need
     * To set the mapping for the tokens expected to swap. This function
     * is to help set the mapping. It can be called internally during
     * initialization, through permissioned functions etc.
     */
    function _setUniFees(
        address _token0,
        address _token1,
        uint24 _fee
    ) internal virtual {
        uniFees[_token0][_token1] = _fee;
        uniFees[_token1][_token0] = _fee;
    }

    /**
     * @dev Used to swap a specific amount of `_from` to `_to`.
     * This will check and handle all allowances as well as not swapping
     * unless `_amountIn` is greater than the set `_minAmountOut`
     *
     * If one of the tokens matches with the `base` token it will do only
     * one jump, otherwise will do two jumps.
     *
     * The corresponding uniFees for each token pair will need to be set
     * other wise this function will revert.
     *
     * @param _from The token we are swapping from.
     * @param _to The token we are swapping to.
     * @param _amountIn The amount of `_from` we will swap.
     * @param _minAmountOut The min of `_to` to get out.
     * @return _amountOut The actual amount of `_to` that was swapped to
     */
    function _swapFrom(
        address _from,
        address _to,
        uint256 _amountIn,
        uint256 _minAmountOut
    ) internal virtual returns (uint256 _amountOut) {
        if (_amountIn != 0 && _amountIn >= minAmountToSell) {
            _checkAllowance(router, _from, _amountIn);
            if (_from == base || _to == base) {
                ISwapRouter.ExactInputSingleParams memory params = ISwapRouter
                    .ExactInputSingleParams(
                        _from, // tokenIn
                        _to, // tokenOut
                        uniFees[_from][_to], // from-to fee
                        address(this), // recipient
                        block.timestamp, // deadline
                        _amountIn, // amountIn
                        _minAmountOut, // amountOut
                        0 // sqrtPriceLimitX96
                    );

                _amountOut = ISwapRouter(router).exactInputSingle(params);
            } else {
                bytes memory path = abi.encodePacked(
                    _from, // tokenIn
                    uniFees[_from][base], // from-base fee
                    base, // base token
                    uniFees[base][_to], // base-to fee
                    _to // tokenOut
                );

                _amountOut = ISwapRouter(router).exactInput(
                    ISwapRouter.ExactInputParams(
                        path,
                        address(this),
                        block.timestamp,
                        _amountIn,
                        _minAmountOut
                    )
                );
            }
        }
    }

    /**
     * @dev Used to swap a specific amount of `_to` from `_from` unless
     * it takes more than `_maxAmountFrom`.
     *
     * This will check and handle all allowances as well as not swapping
     * unless `_maxAmountFrom` is greater than the set `minAmountToSell`
     *
     * If one of the tokens matches with the `base` token it will do only
     * one jump, otherwise will do two jumps.
     *
     * The corresponding uniFees for each token pair will need to be set
     * other wise this function will revert.
     *
     * @param _from The token we are swapping from.
     * @param _to The token we are swapping to.
     * @param _amountTo The amount of `_to` we need out.
     * @param _maxAmountFrom The max of `_from` we will swap.
     * @return _amountIn The actual amount of `_from` swapped.
     */
    function _swapTo(
        address _from,
        address _to,
        uint256 _amountTo,
        uint256 _maxAmountFrom
    ) internal virtual returns (uint256 _amountIn) {
        if (_maxAmountFrom != 0 && _maxAmountFrom >= minAmountToSell) {
            _checkAllowance(router, _from, _maxAmountFrom);
            if (_from == base || _to == base) {
                ISwapRouter.ExactOutputSingleParams memory params = ISwapRouter
                    .ExactOutputSingleParams(
                        _from, // tokenIn
                        _to, // tokenOut
                        uniFees[_from][_to], // from-to fee
                        address(this), // recipient
                        block.timestamp, // deadline
                        _amountTo, // amountOut
                        _maxAmountFrom, // maxAmountIn
                        0 // sqrtPriceLimitX96
                    );

                _amountIn = ISwapRouter(router).exactOutputSingle(params);
            } else {
                bytes memory path = abi.encodePacked(
                    _to,
                    uniFees[base][_to], // base-to fee
                    base,
                    uniFees[_from][base], // from-base fee
                    _from
                );

                _amountIn = ISwapRouter(router).exactOutput(
                    ISwapRouter.ExactOutputParams(
                        path,
                        address(this),
                        block.timestamp,
                        _amountTo, // How much we want out
                        _maxAmountFrom
                    )
                );
            }
        }
    }

    /**
     * @dev Internal safe function to make sure the contract you want to
     * interact with has enough allowance to pull the desired tokens.
     *
     * @param _contract The address of the contract that will move the token.
     * @param _token The ERC-20 token that will be getting spent.
     * @param _amount The amount of `_token` to be spent.
     */
    function _checkAllowance(
        address _contract,
        address _token,
        uint256 _amount
    ) internal virtual {
        if (ERC20(_token).allowance(address(this), _contract) < _amount) {
            ERC20(_token).forceApprove(_contract, 0);
            ERC20(_token).forceApprove(_contract, _amount);
        }
    }
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity >=0.8.18;

import {ITokenizedStrategy} from "./ITokenizedStrategy.sol";
import {IBaseStrategy} from "./IBaseStrategy.sol";

interface IStrategy is IBaseStrategy, ITokenizedStrategy {}

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.18;

import {IBaseHealthCheck} from "@periphery/Bases/HealthCheck/IBaseHealthCheck.sol";

interface ILenderBorrower is IBaseHealthCheck {
    // Public Variables
    function borrowToken() external view returns (address);

    function leaveDebtBehind() external view returns (bool);

    function depositLimit() external view returns (uint256);

    function targetLTVMultiplier() external view returns (uint16);

    function warningLTVMultiplier() external view returns (uint16);

    function maxGasPriceToTend() external view returns (uint256);

    function slippage() external view returns (uint256);

    // External Functions
    function setDepositLimit(uint256 _depositLimit) external;

    function setLtvMultipliers(
        uint16 _targetLTVMultiplier,
        uint16 _warningLTVMultiplier
    ) external;

    function setLeaveDebtBehind(bool _leaveDebtBehind) external;

    function setMaxGasPriceToTend(uint256 _maxGasPriceToTend) external;

    function setSlippage(uint256 _slippage) external;

    // Public View Functions
    function getCurrentLTV() external view returns (uint256);

    function getNetBorrowApr(uint256 newAmount) external view returns (uint256);

    function getNetRewardApr(uint256 newAmount) external view returns (uint256);

    function getLiquidateCollateralFactor() external view returns (uint256);

    function balanceOfCollateral() external view returns (uint256);

    function balanceOfDebt() external view returns (uint256);

    function balanceOfLentAssets() external view returns (uint256);

    function balanceOfAsset() external view returns (uint256);

    function balanceOfBorrowToken() external view returns (uint256);

    function borrowTokenOwedBalance() external view returns (uint256);

    // Emergency Functions
    function claimAndSellRewards() external;

    function sellBorrowToken(uint256 _amount) external;

    function manualWithdraw(address _token, uint256 _amount) external;

    function manualRepayDebt() external;
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

import "../IERC20.sol";

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

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

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

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

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

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

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

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC4626.sol)

pragma solidity ^0.8.0;

import "../token/ERC20/IERC20.sol";
import "../token/ERC20/extensions/IERC20Metadata.sol";

/**
 * @dev Interface of the ERC4626 "Tokenized Vault Standard", as defined in
 * https://eips.ethereum.org/EIPS/eip-4626[ERC-4626].
 *
 * _Available since v4.7._
 */
interface IERC4626 is IERC20, IERC20Metadata {
    event Deposit(address indexed sender, address indexed owner, uint256 assets, uint256 shares);

    event Withdraw(
        address indexed sender,
        address indexed receiver,
        address indexed owner,
        uint256 assets,
        uint256 shares
    );

    /**
     * @dev Returns the address of the underlying token used for the Vault for accounting, depositing, and withdrawing.
     *
     * - MUST be an ERC-20 token contract.
     * - MUST NOT revert.
     */
    function asset() external view returns (address assetTokenAddress);

    /**
     * @dev Returns the total amount of the underlying asset that is “managed” by Vault.
     *
     * - SHOULD include any compounding that occurs from yield.
     * - MUST be inclusive of any fees that are charged against assets in the Vault.
     * - MUST NOT revert.
     */
    function totalAssets() external view returns (uint256 totalManagedAssets);

    /**
     * @dev Returns the amount of shares that the Vault would exchange for the amount of assets provided, in an ideal
     * scenario where all the conditions are met.
     *
     * - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
     * - MUST NOT show any variations depending on the caller.
     * - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
     * - MUST NOT revert.
     *
     * NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
     * “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
     * from.
     */
    function convertToShares(uint256 assets) external view returns (uint256 shares);

    /**
     * @dev Returns the amount of assets that the Vault would exchange for the amount of shares provided, in an ideal
     * scenario where all the conditions are met.
     *
     * - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
     * - MUST NOT show any variations depending on the caller.
     * - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
     * - MUST NOT revert.
     *
     * NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
     * “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
     * from.
     */
    function convertToAssets(uint256 shares) external view returns (uint256 assets);

    /**
     * @dev Returns the maximum amount of the underlying asset that can be deposited into the Vault for the receiver,
     * through a deposit call.
     *
     * - MUST return a limited value if receiver is subject to some deposit limit.
     * - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of assets that may be deposited.
     * - MUST NOT revert.
     */
    function maxDeposit(address receiver) external view returns (uint256 maxAssets);

    /**
     * @dev Allows an on-chain or off-chain user to simulate the effects of their deposit at the current block, given
     * current on-chain conditions.
     *
     * - MUST return as close to and no more than the exact amount of Vault shares that would be minted in a deposit
     *   call in the same transaction. I.e. deposit should return the same or more shares as previewDeposit if called
     *   in the same transaction.
     * - MUST NOT account for deposit limits like those returned from maxDeposit and should always act as though the
     *   deposit would be accepted, regardless if the user has enough tokens approved, etc.
     * - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
     * - MUST NOT revert.
     *
     * NOTE: any unfavorable discrepancy between convertToShares and previewDeposit SHOULD be considered slippage in
     * share price or some other type of condition, meaning the depositor will lose assets by depositing.
     */
    function previewDeposit(uint256 assets) external view returns (uint256 shares);

    /**
     * @dev Mints shares Vault shares to receiver by depositing exactly amount of underlying tokens.
     *
     * - MUST emit the Deposit event.
     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
     *   deposit execution, and are accounted for during deposit.
     * - MUST revert if all of assets cannot be deposited (due to deposit limit being reached, slippage, the user not
     *   approving enough underlying tokens to the Vault contract, etc).
     *
     * NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
     */
    function deposit(uint256 assets, address receiver) external returns (uint256 shares);

    /**
     * @dev Returns the maximum amount of the Vault shares that can be minted for the receiver, through a mint call.
     * - MUST return a limited value if receiver is subject to some mint limit.
     * - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of shares that may be minted.
     * - MUST NOT revert.
     */
    function maxMint(address receiver) external view returns (uint256 maxShares);

    /**
     * @dev Allows an on-chain or off-chain user to simulate the effects of their mint at the current block, given
     * current on-chain conditions.
     *
     * - MUST return as close to and no fewer than the exact amount of assets that would be deposited in a mint call
     *   in the same transaction. I.e. mint should return the same or fewer assets as previewMint if called in the
     *   same transaction.
     * - MUST NOT account for mint limits like those returned from maxMint and should always act as though the mint
     *   would be accepted, regardless if the user has enough tokens approved, etc.
     * - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
     * - MUST NOT revert.
     *
     * NOTE: any unfavorable discrepancy between convertToAssets and previewMint SHOULD be considered slippage in
     * share price or some other type of condition, meaning the depositor will lose assets by minting.
     */
    function previewMint(uint256 shares) external view returns (uint256 assets);

    /**
     * @dev Mints exactly shares Vault shares to receiver by depositing amount of underlying tokens.
     *
     * - MUST emit the Deposit event.
     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the mint
     *   execution, and are accounted for during mint.
     * - MUST revert if all of shares cannot be minted (due to deposit limit being reached, slippage, the user not
     *   approving enough underlying tokens to the Vault contract, etc).
     *
     * NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
     */
    function mint(uint256 shares, address receiver) external returns (uint256 assets);

    /**
     * @dev Returns the maximum amount of the underlying asset that can be withdrawn from the owner balance in the
     * Vault, through a withdraw call.
     *
     * - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
     * - MUST NOT revert.
     */
    function maxWithdraw(address owner) external view returns (uint256 maxAssets);

    /**
     * @dev Allows an on-chain or off-chain user to simulate the effects of their withdrawal at the current block,
     * given current on-chain conditions.
     *
     * - MUST return as close to and no fewer than the exact amount of Vault shares that would be burned in a withdraw
     *   call in the same transaction. I.e. withdraw should return the same or fewer shares as previewWithdraw if
     *   called
     *   in the same transaction.
     * - MUST NOT account for withdrawal limits like those returned from maxWithdraw and should always act as though
     *   the withdrawal would be accepted, regardless if the user has enough shares, etc.
     * - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
     * - MUST NOT revert.
     *
     * NOTE: any unfavorable discrepancy between convertToShares and previewWithdraw SHOULD be considered slippage in
     * share price or some other type of condition, meaning the depositor will lose assets by depositing.
     */
    function previewWithdraw(uint256 assets) external view returns (uint256 shares);

    /**
     * @dev Burns shares from owner and sends exactly assets of underlying tokens to receiver.
     *
     * - MUST emit the Withdraw event.
     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
     *   withdraw execution, and are accounted for during withdraw.
     * - MUST revert if all of assets cannot be withdrawn (due to withdrawal limit being reached, slippage, the owner
     *   not having enough shares, etc).
     *
     * Note that some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
     * Those methods should be performed separately.
     */
    function withdraw(uint256 assets, address receiver, address owner) external returns (uint256 shares);

    /**
     * @dev Returns the maximum amount of Vault shares that can be redeemed from the owner balance in the Vault,
     * through a redeem call.
     *
     * - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
     * - MUST return balanceOf(owner) if owner is not subject to any withdrawal limit or timelock.
     * - MUST NOT revert.
     */
    function maxRedeem(address owner) external view returns (uint256 maxShares);

    /**
     * @dev Allows an on-chain or off-chain user to simulate the effects of their redeemption at the current block,
     * given current on-chain conditions.
     *
     * - MUST return as close to and no more than the exact amount of assets that would be withdrawn in a redeem call
     *   in the same transaction. I.e. redeem should return the same or more assets as previewRedeem if called in the
     *   same transaction.
     * - MUST NOT account for redemption limits like those returned from maxRedeem and should always act as though the
     *   redemption would be accepted, regardless if the user has enough shares, etc.
     * - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
     * - MUST NOT revert.
     *
     * NOTE: any unfavorable discrepancy between convertToAssets and previewRedeem SHOULD be considered slippage in
     * share price or some other type of condition, meaning the depositor will lose assets by redeeming.
     */
    function previewRedeem(uint256 shares) external view returns (uint256 assets);

    /**
     * @dev Burns exactly shares from owner and sends assets of underlying tokens to receiver.
     *
     * - MUST emit the Withdraw event.
     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
     *   redeem execution, and are accounted for during redeem.
     * - MUST revert if all of shares cannot be redeemed (due to withdrawal limit being reached, slippage, the owner
     *   not having enough shares, etc).
     *
     * NOTE: some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
     * Those methods should be performed separately.
     */
    function redeem(uint256 shares, address receiver, address owner) external returns (uint256 assets);
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity >=0.8.18;

import {BaseStrategy, ERC20} from "@tokenized-strategy/BaseStrategy.sol";

/**
 *   @title Base Health Check
 *   @author Yearn.finance
 *   @notice This contract can be inherited by any Yearn
 *   V3 strategy wishing to implement a health check during
 *   the `report` function in order to prevent any unexpected
 *   behavior from being permanently recorded as well as the
 *   `checkHealth` modifier.
 *
 *   A strategist simply needs to inherit this contract. Set
 *   the limit ratios to the desired amounts and then
 *   override `_harvestAndReport()` just as they otherwise
 *  would. If the profit or loss that would be recorded is
 *   outside the acceptable bounds the tx will revert.
 *
 *   The healthcheck does not prevent a strategy from reporting
 *   losses, but rather can make sure manual intervention is
 *   needed before reporting an unexpected loss or profit.
 */
abstract contract BaseHealthCheck is BaseStrategy {
    // Can be used to determine if a healthcheck should be called.
    // Defaults to true;
    bool public doHealthCheck = true;

    uint256 internal constant MAX_BPS = 10_000;

    // Default profit limit to 100%.
    uint16 private _profitLimitRatio = uint16(MAX_BPS);

    // Defaults loss limit to 0.
    uint16 private _lossLimitRatio;

    constructor(
        address _asset,
        string memory _name
    ) BaseStrategy(_asset, _name) {}

    /**
     * @notice Returns the current profit limit ratio.
     * @dev Use a getter function to keep the variable private.
     * @return . The current profit limit ratio.
     */
    function profitLimitRatio() public view returns (uint256) {
        return _profitLimitRatio;
    }

    /**
     * @notice Returns the current loss limit ratio.
     * @dev Use a getter function to keep the variable private.
     * @return . The current loss limit ratio.
     */
    function lossLimitRatio() public view returns (uint256) {
        return _lossLimitRatio;
    }

    /**
     * @notice Set the `profitLimitRatio`.
     * @dev Denominated in basis points. I.E. 1_000 == 10%.
     * @param _newProfitLimitRatio The mew profit limit ratio.
     */
    function setProfitLimitRatio(
        uint256 _newProfitLimitRatio
    ) external onlyManagement {
        _setProfitLimitRatio(_newProfitLimitRatio);
    }

    /**
     * @dev Internally set the profit limit ratio. Denominated
     * in basis points. I.E. 1_000 == 10%.
     * @param _newProfitLimitRatio The mew profit limit ratio.
     */
    function _setProfitLimitRatio(uint256 _newProfitLimitRatio) internal {
        require(_newProfitLimitRatio > 0, "!zero profit");
        require(_newProfitLimitRatio <= type(uint16).max, "!too high");
        _profitLimitRatio = uint16(_newProfitLimitRatio);
    }

    /**
     * @notice Set the `lossLimitRatio`.
     * @dev Denominated in basis points. I.E. 1_000 == 10%.
     * @param _newLossLimitRatio The new loss limit ratio.
     */
    function setLossLimitRatio(
        uint256 _newLossLimitRatio
    ) external onlyManagement {
        _setLossLimitRatio(_newLossLimitRatio);
    }

    /**
     * @dev Internally set the loss limit ratio. Denominated
     * in basis points. I.E. 1_000 == 10%.
     * @param _newLossLimitRatio The new loss limit ratio.
     */
    function _setLossLimitRatio(uint256 _newLossLimitRatio) internal {
        require(_newLossLimitRatio < MAX_BPS, "!loss limit");
        _lossLimitRatio = uint16(_newLossLimitRatio);
    }

    /**
     * @notice Turns the healthcheck on and off.
     * @dev If turned off the next report will auto turn it back on.
     * @param _doHealthCheck Bool if healthCheck should be done.
     */
    function setDoHealthCheck(bool _doHealthCheck) public onlyManagement {
        doHealthCheck = _doHealthCheck;
    }

    /**
     * @notice OVerrides the default {harvestAndReport} to include a healthcheck.
     * @return _totalAssets New totalAssets post report.
     */
    function harvestAndReport()
        external
        override
        onlySelf
        returns (uint256 _totalAssets)
    {
        // Let the strategy report.
        _totalAssets = _harvestAndReport();

        // Run the healthcheck on the amount returned.
        _executeHealthCheck(_totalAssets);
    }

    /**
     * @dev To be called during a report to make sure the profit
     * or loss being recorded is within the acceptable bound.
     *
     * @param _newTotalAssets The amount that will be reported.
     */
    function _executeHealthCheck(uint256 _newTotalAssets) internal virtual {
        if (!doHealthCheck) {
            doHealthCheck = true;
            return;
        }

        // Get the current total assets from the implementation.
        uint256 currentTotalAssets = TokenizedStrategy.totalAssets();

        if (_newTotalAssets > currentTotalAssets) {
            require(
                ((_newTotalAssets - currentTotalAssets) <=
                    (currentTotalAssets * uint256(_profitLimitRatio)) /
                        MAX_BPS),
                "healthCheck"
            );
        } else if (currentTotalAssets > _newTotalAssets) {
            require(
                (currentTotalAssets - _newTotalAssets <=
                    ((currentTotalAssets * uint256(_lossLimitRatio)) /
                        MAX_BPS)),
                "healthCheck"
            );
        }
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

import {MarketParams, Market} from "./IMorpho.sol";

/// @title IIrm
/// @author Morpho Labs
/// @custom:contact security@morpho.org
/// @notice Interface that Interest Rate Models (IRMs) used by Morpho must implement.
interface IIrm {
    /// @notice Returns the borrow rate per second (scaled by WAD) of the market `marketParams`.
    /// @dev Assumes that `market` corresponds to `marketParams`.
    function borrowRate(
        MarketParams memory marketParams,
        Market memory market
    ) external returns (uint256);

    /// @notice Returns the borrow rate per second (scaled by WAD) of the market `marketParams` without modifying any
    /// storage.
    /// @dev Assumes that `market` corresponds to `marketParams`.
    function borrowRateView(
        MarketParams memory marketParams,
        Market memory market
    ) external view returns (uint256);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

uint256 constant WAD = 1e18;

/// @title MathLib
/// @author Morpho Labs
/// @custom:contact security@morpho.org
/// @notice Library to manage fixed-point arithmetic.
library MathLib {
    /// @dev Returns (`x` * `y`) / `WAD` rounded down.
    function wMulDown(uint256 x, uint256 y) internal pure returns (uint256) {
        return mulDivDown(x, y, WAD);
    }

    /// @dev Returns (`x` * `WAD`) / `y` rounded down.
    function wDivDown(uint256 x, uint256 y) internal pure returns (uint256) {
        return mulDivDown(x, WAD, y);
    }

    /// @dev Returns (`x` * `WAD`) / `y` rounded up.
    function wDivUp(uint256 x, uint256 y) internal pure returns (uint256) {
        return mulDivUp(x, WAD, y);
    }

    /// @dev Returns (`x` * `y`) / `d` rounded down.
    function mulDivDown(
        uint256 x,
        uint256 y,
        uint256 d
    ) internal pure returns (uint256) {
        return (x * y) / d;
    }

    /// @dev Returns (`x` * `y`) / `d` rounded up.
    function mulDivUp(
        uint256 x,
        uint256 y,
        uint256 d
    ) internal pure returns (uint256) {
        return (x * y + (d - 1)) / d;
    }

    /// @dev Returns the sum of the first three non-zero terms of a Taylor expansion of e^(nx) - 1, to approximate a
    /// continuous compound interest rate.
    function wTaylorCompounded(
        uint256 x,
        uint256 n
    ) internal pure returns (uint256) {
        uint256 firstTerm = x * n;
        uint256 secondTerm = mulDivDown(firstTerm, firstTerm, 2 * WAD);
        uint256 thirdTerm = mulDivDown(secondTerm, firstTerm, 3 * WAD);

        return firstTerm + secondTerm + thirdTerm;
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

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

/// @title UtilsLib
/// @author Morpho Labs
/// @custom:contact security@morpho.org
/// @notice Library exposing helpers.
/// @dev Inspired by https://github.com/morpho-org/morpho-utils.
library UtilsLib {
    /// @dev Returns true if there is exactly one zero among `x` and `y`.
    function exactlyOneZero(
        uint256 x,
        uint256 y
    ) internal pure returns (bool z) {
        assembly {
            z := xor(iszero(x), iszero(y))
        }
    }

    /// @dev Returns the min of `x` and `y`.
    function min(uint256 x, uint256 y) internal pure returns (uint256 z) {
        assembly {
            z := xor(x, mul(xor(x, y), lt(y, x)))
        }
    }

    /// @dev Returns `x` safely cast to uint128.
    function toUint128(uint256 x) internal pure returns (uint128) {
        require(x <= type(uint128).max, ErrorsLib.MAX_UINT128_EXCEEDED);
        return uint128(x);
    }

    /// @dev Returns max(0, x - y).
    function zeroFloorSub(
        uint256 x,
        uint256 y
    ) internal pure returns (uint256 z) {
        assembly {
            z := mul(gt(x, y), sub(x, y))
        }
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

import {IMorpho, Id} from "../../../interfaces/morpho/IMorpho.sol";
import {MorphoStorageLib} from "./MorphoStorageLib.sol";

/// @title MorphoLib
/// @author Morpho Labs
/// @custom:contact security@morpho.org
/// @notice Helper library to access Morpho storage variables.
/// @dev Warning: Supply and borrow getters may return outdated values that do not include accrued interest.
library MorphoLib {
    function supplyShares(
        IMorpho morpho,
        Id id,
        address user
    ) internal view returns (uint256) {
        bytes32[] memory slot = _array(
            MorphoStorageLib.positionSupplySharesSlot(id, user)
        );
        return uint256(morpho.extSloads(slot)[0]);
    }

    function borrowShares(
        IMorpho morpho,
        Id id,
        address user
    ) internal view returns (uint256) {
        bytes32[] memory slot = _array(
            MorphoStorageLib.positionBorrowSharesAndCollateralSlot(id, user)
        );
        return uint128(uint256(morpho.extSloads(slot)[0]));
    }

    function collateral(
        IMorpho morpho,
        Id id,
        address user
    ) internal view returns (uint256) {
        bytes32[] memory slot = _array(
            MorphoStorageLib.positionBorrowSharesAndCollateralSlot(id, user)
        );
        return uint256(morpho.extSloads(slot)[0] >> 128);
    }

    function totalSupplyAssets(
        IMorpho morpho,
        Id id
    ) internal view returns (uint256) {
        bytes32[] memory slot = _array(
            MorphoStorageLib.marketTotalSupplyAssetsAndSharesSlot(id)
        );
        return uint128(uint256(morpho.extSloads(slot)[0]));
    }

    function totalSupplyShares(
        IMorpho morpho,
        Id id
    ) internal view returns (uint256) {
        bytes32[] memory slot = _array(
            MorphoStorageLib.marketTotalSupplyAssetsAndSharesSlot(id)
        );
        return uint256(morpho.extSloads(slot)[0] >> 128);
    }

    function totalBorrowAssets(
        IMorpho morpho,
        Id id
    ) internal view returns (uint256) {
        bytes32[] memory slot = _array(
            MorphoStorageLib.marketTotalBorrowAssetsAndSharesSlot(id)
        );
        return uint128(uint256(morpho.extSloads(slot)[0]));
    }

    function totalBorrowShares(
        IMorpho morpho,
        Id id
    ) internal view returns (uint256) {
        bytes32[] memory slot = _array(
            MorphoStorageLib.marketTotalBorrowAssetsAndSharesSlot(id)
        );
        return uint256(morpho.extSloads(slot)[0] >> 128);
    }

    function lastUpdate(IMorpho morpho, Id id) internal view returns (uint256) {
        bytes32[] memory slot = _array(
            MorphoStorageLib.marketLastUpdateAndFeeSlot(id)
        );
        return uint128(uint256(morpho.extSloads(slot)[0]));
    }

    function fee(IMorpho morpho, Id id) internal view returns (uint256) {
        bytes32[] memory slot = _array(
            MorphoStorageLib.marketLastUpdateAndFeeSlot(id)
        );
        return uint256(morpho.extSloads(slot)[0] >> 128);
    }

    function _array(bytes32 x) private pure returns (bytes32[] memory) {
        bytes32[] memory res = new bytes32[](1);
        res[0] = x;
        return res;
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

import {Id, MarketParams} from "../../interfaces/morpho/IMorpho.sol";

/// @title MarketParamsLib
/// @author Morpho Labs
/// @custom:contact security@morpho.org
/// @notice Library to convert a market to its id.
library MarketParamsLib {
    /// @notice The length of the data used to compute the id of a market.
    /// @dev The length is 5 * 32 because `MarketParams` has 5 variables of 32 bytes each.
    uint256 internal constant MARKET_PARAMS_BYTES_LENGTH = 5 * 32;

    /// @notice Returns the id of the market `marketParams`.
    function id(
        MarketParams memory marketParams
    ) internal pure returns (Id marketParamsId) {
        assembly ("memory-safe") {
            marketParamsId := keccak256(
                marketParams,
                MARKET_PARAMS_BYTES_LENGTH
            )
        }
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.6.12;
pragma experimental ABIEncoderV2;

import "./IUniswapV3SwapCallback.sol";

/// @title Router token swapping functionality
/// @notice Functions for swapping tokens via Uniswap V3
interface ISwapRouter is IUniswapV3SwapCallback {
    struct ExactInputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInputSingle(
        ExactInputSingleParams calldata params
    ) external payable returns (uint256 amountOut);

    struct ExactInputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInput(
        ExactInputParams calldata params
    ) external payable returns (uint256 amountOut);

    struct ExactOutputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactOutputSingleParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutputSingle(
        ExactOutputSingleParams calldata params
    ) external payable returns (uint256 amountIn);

    struct ExactOutputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another along the specified path (reversed)
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactOutputParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutput(
        ExactOutputParams calldata params
    ) external payable returns (uint256 amountIn);

    // Taken from https://soliditydeveloper.com/uniswap3
    // Manually added to the interface
    function refundETH() external payable;
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity >=0.8.18;

/**
 * @title BaseSwapper
 * @author yearn.fi
 * @dev Base contract for all swapper contracts except TradeFactorySwapper.
 *      Contains the common minAmountToSell variable that most swappers need.
 */
contract BaseSwapper {
    /// @notice Minimum amount of tokens to sell in a swap.
    uint256 public minAmountToSell;

    /**
     * @dev Set the minimum amount to sell in a swap.
     * @param _minAmountToSell Minimum amount of tokens needed to execute a swap.
     */
    function _setMinAmountToSell(uint256 _minAmountToSell) internal virtual {
        minAmountToSell = _minAmountToSell;
    }
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity >=0.8.18;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {IERC4626} from "@openzeppelin/contracts/interfaces/IERC4626.sol";
import {IERC20Permit} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol";

// Interface that implements the 4626 standard and the implementation functions
interface ITokenizedStrategy is IERC4626, IERC20Permit {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event StrategyShutdown();

    event NewTokenizedStrategy(
        address indexed strategy,
        address indexed asset,
        string apiVersion
    );

    event Reported(
        uint256 profit,
        uint256 loss,
        uint256 protocolFees,
        uint256 performanceFees
    );

    event UpdatePerformanceFeeRecipient(
        address indexed newPerformanceFeeRecipient
    );

    event UpdateKeeper(address indexed newKeeper);

    event UpdatePerformanceFee(uint16 newPerformanceFee);

    event UpdateManagement(address indexed newManagement);

    event UpdateEmergencyAdmin(address indexed newEmergencyAdmin);

    event UpdateProfitMaxUnlockTime(uint256 newProfitMaxUnlockTime);

    event UpdatePendingManagement(address indexed newPendingManagement);

    /*//////////////////////////////////////////////////////////////
                           INITIALIZATION
    //////////////////////////////////////////////////////////////*/

    function initialize(
        address _asset,
        string memory _name,
        address _management,
        address _performanceFeeRecipient,
        address _keeper
    ) external;

    /*//////////////////////////////////////////////////////////////
                    NON-STANDARD 4626 OPTIONS
    //////////////////////////////////////////////////////////////*/

    function withdraw(
        uint256 assets,
        address receiver,
        address owner,
        uint256 maxLoss
    ) external returns (uint256);

    function redeem(
        uint256 shares,
        address receiver,
        address owner,
        uint256 maxLoss
    ) external returns (uint256);

    function maxWithdraw(
        address owner,
        uint256 /*maxLoss*/
    ) external view returns (uint256);

    function maxRedeem(
        address owner,
        uint256 /*maxLoss*/
    ) external view returns (uint256);

    /*//////////////////////////////////////////////////////////////
                        MODIFIER HELPERS
    //////////////////////////////////////////////////////////////*/

    function requireManagement(address _sender) external view;

    function requireKeeperOrManagement(address _sender) external view;

    function requireEmergencyAuthorized(address _sender) external view;

    /*//////////////////////////////////////////////////////////////
                        KEEPERS FUNCTIONS
    //////////////////////////////////////////////////////////////*/

    function tend() external;

    function report() external returns (uint256 _profit, uint256 _loss);

    /*//////////////////////////////////////////////////////////////
                        CONSTANTS
    //////////////////////////////////////////////////////////////*/

    function MAX_FEE() external view returns (uint16);

    function FACTORY() external view returns (address);

    /*//////////////////////////////////////////////////////////////
                            GETTERS
    //////////////////////////////////////////////////////////////*/

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

    function pricePerShare() external view returns (uint256);

    function management() external view returns (address);

    function pendingManagement() external view returns (address);

    function keeper() external view returns (address);

    function emergencyAdmin() external view returns (address);

    function performanceFee() external view returns (uint16);

    function performanceFeeRecipient() external view returns (address);

    function fullProfitUnlockDate() external view returns (uint256);

    function profitUnlockingRate() external view returns (uint256);

    function profitMaxUnlockTime() external view returns (uint256);

    function lastReport() external view returns (uint256);

    function isShutdown() external view returns (bool);

    function unlockedShares() external view returns (uint256);

    /*//////////////////////////////////////////////////////////////
                            SETTERS
    //////////////////////////////////////////////////////////////*/

    function setPendingManagement(address) external;

    function acceptManagement() external;

    function setKeeper(address _keeper) external;

    function setEmergencyAdmin(address _emergencyAdmin) external;

    function setPerformanceFee(uint16 _performanceFee) external;

    function setPerformanceFeeRecipient(
        address _performanceFeeRecipient
    ) external;

    function setProfitMaxUnlockTime(uint256 _profitMaxUnlockTime) external;

    function setName(string calldata _newName) external;

    function shutdownStrategy() external;

    function emergencyWithdraw(uint256 _amount) external;
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity >=0.8.18;

interface IBaseStrategy {
    function tokenizedStrategyAddress() external view returns (address);

    /*//////////////////////////////////////////////////////////////
                            IMMUTABLE FUNCTIONS
    //////////////////////////////////////////////////////////////*/

    function availableDepositLimit(
        address _owner
    ) external view returns (uint256);

    function availableWithdrawLimit(
        address _owner
    ) external view returns (uint256);

    function deployFunds(uint256 _assets) external;

    function freeFunds(uint256 _amount) external;

    function harvestAndReport() external returns (uint256);

    function tendThis(uint256 _totalIdle) external;

    function shutdownWithdraw(uint256 _amount) external;

    function tendTrigger() external view returns (bool, bytes memory);
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity >=0.8.18;

import {IStrategy} from "@tokenized-strategy/interfaces/IStrategy.sol";

interface IBaseHealthCheck is IStrategy {
    function doHealthCheck() external view returns (bool);

    function profitLimitRatio() external view returns (uint256);

    function lossLimitRatio() external view returns (uint256);

    function setProfitLimitRatio(uint256 _newProfitLimitRatio) external;

    function setLossLimitRatio(uint256 _newLossLimitRatio) external;

    function setDoHealthCheck(bool _doHealthCheck) external;
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity >=0.8.18;

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

// TokenizedStrategy interface used for internal view delegateCalls.
import {ITokenizedStrategy} from "./interfaces/ITokenizedStrategy.sol";

/**
 * @title YearnV3 Base Strategy
 * @author yearn.finance
 * @notice
 *  BaseStrategy implements all of the required functionality to
 *  seamlessly integrate with the `TokenizedStrategy` implementation contract
 *  allowing anyone to easily build a fully permissionless ERC-4626 compliant
 *  Vault by inheriting this contract and overriding three simple functions.

 *  It utilizes an immutable proxy pattern that allows the BaseStrategy
 *  to remain simple and small. All standard logic is held within the
 *  `TokenizedStrategy` and is reused over any n strategies all using the
 *  `fallback` function to delegatecall the implementation so that strategists
 *  can only be concerned with writing their strategy specific code.
 *
 *  This contract should be inherited and the three main abstract methods
 *  `_deployFunds`, `_freeFunds` and `_harvestAndReport` implemented to adapt
 *  the Strategy to the particular needs it has to generate yield. There are
 *  other optional methods that can be implemented to further customize
 *  the strategy if desired.
 *
 *  All default storage for the strategy is controlled and updated by the
 *  `TokenizedStrategy`. The implementation holds a storage struct that
 *  contains all needed global variables in a manual storage slot. This
 *  means strategists can feel free to implement their own custom storage
 *  variables as they need with no concern of collisions. All global variables
 *  can be viewed within the Strategy by a simple call using the
 *  `TokenizedStrategy` variable. IE: TokenizedStrategy.globalVariable();.
 */
abstract contract BaseStrategy {
    /*//////////////////////////////////////////////////////////////
                            MODIFIERS
    //////////////////////////////////////////////////////////////*/
    /**
     * @dev Used on TokenizedStrategy callback functions to make sure it is post
     * a delegateCall from this address to the TokenizedStrategy.
     */
    modifier onlySelf() {
        _onlySelf();
        _;
    }

    /**
     * @dev Use to assure that the call is coming from the strategies management.
     */
    modifier onlyManagement() {
        TokenizedStrategy.requireManagement(msg.sender);
        _;
    }

    /**
     * @dev Use to assure that the call is coming from either the strategies
     * management or the keeper.
     */
    modifier onlyKeepers() {
        TokenizedStrategy.requireKeeperOrManagement(msg.sender);
        _;
    }

    /**
     * @dev Use to assure that the call is coming from either the strategies
     * management or the emergency admin.
     */
    modifier onlyEmergencyAuthorized() {
        TokenizedStrategy.requireEmergencyAuthorized(msg.sender);
        _;
    }

    /**
     * @dev Require that the msg.sender is this address.
     */
    function _onlySelf() internal view {
        require(msg.sender == address(this), "!self");
    }

    /*//////////////////////////////////////////////////////////////
                            CONSTANTS
    //////////////////////////////////////////////////////////////*/

    /**
     * @dev This is the address of the TokenizedStrategy implementation
     * contract that will be used by all strategies to handle the
     * accounting, logic, storage etc.
     *
     * Any external calls to the that don't hit one of the functions
     * defined in this base or the strategy will end up being forwarded
     * through the fallback function, which will delegateCall this address.
     *
     * This address should be the same for every strategy, never be adjusted
     * and always be checked before any integration with the Strategy.
     */
    address public constant tokenizedStrategyAddress =
        0xD377919FA87120584B21279a491F82D5265A139c;

    /*//////////////////////////////////////////////////////////////
                            IMMUTABLES
    //////////////////////////////////////////////////////////////*/

    /**
     * @dev Underlying asset the Strategy is earning yield on.
     * Stored here for cheap retrievals within the strategy.
     */
    ERC20 internal immutable asset;

    /**
     * @dev This variable is set to address(this) during initialization of each strategy.
     *
     * This can be used to retrieve storage data within the strategy
     * contract as if it were a linked library.
     *
     *       i.e. uint256 totalAssets = TokenizedStrategy.totalAssets()
     *
     * Using address(this) will mean any calls using this variable will lead
     * to a call to itself. Which will hit the fallback function and
     * delegateCall that to the actual TokenizedStrategy.
     */
    ITokenizedStrategy internal immutable TokenizedStrategy;

    /**
     * @notice Used to initialize the strategy on deployment.
     *
     * This will set the `TokenizedStrategy` variable for easy
     * internal view calls to the implementation. As well as
     * initializing the default storage variables based on the
     * parameters and using the deployer for the permissioned roles.
     *
     * @param _asset Address of the underlying asset.
     * @param _name Name the strategy will use.
     */
    constructor(address _asset, string memory _name) {
        asset = ERC20(_asset);

        // Set instance of the implementation for internal use.
        TokenizedStrategy = ITokenizedStrategy(address(this));

        // Initialize the strategy's storage variables.
        _delegateCall(
            abi.encodeCall(
                ITokenizedStrategy.initialize,
                (_asset, _name, msg.sender, msg.sender, msg.sender)
            )
        );

        // Store the tokenizedStrategyAddress at the standard implementation
        // address storage slot so etherscan picks up the interface. This gets
        // stored on initialization and never updated.
        assembly {
            sstore(
                // keccak256('eip1967.proxy.implementation' - 1)
                0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc,
                tokenizedStrategyAddress
            )
        }
    }

    /*//////////////////////////////////////////////////////////////
                NEEDED TO BE OVERRIDDEN BY STRATEGIST
    //////////////////////////////////////////////////////////////*/

    /**
     * @dev Can deploy up to '_amount' of 'asset' in the yield source.
     *
     * This function is called at the end of a {deposit} or {mint}
     * call. Meaning that unless a whitelist is implemented it will
     * be entirely permissionless and thus can be sandwiched or otherwise
     * manipulated.
     *
     * @param _amount The amount of 'asset' that the strategy can attempt
     * to deposit in the yield source.
     */
    function _deployFunds(uint256 _amount) internal virtual;

    /**
     * @dev Should attempt to free the '_amount' of 'asset'.
     *
     * NOTE: The amount of 'asset' that is already loose has already
     * been accounted for.
     *
     * This function is called during {withdraw} and {redeem} calls.
     * Meaning that unless a whitelist is implemented it will be
     * entirely permissionless and thus can be sandwiched or otherwise
     * manipulated.
     *
     * Should not rely on asset.balanceOf(address(this)) calls other than
     * for diff accounting purposes.
     *
     * Any difference between `_amount` and what is actually freed will be
     * counted as a loss and passed on to the withdrawer. This means
     * care should be taken in times of illiquidity. It may be better to revert
     * if withdraws are simply illiquid so not to realize incorrect losses.
     *
     * @param _amount, The amount of 'asset' to be freed.
     */
    function _freeFunds(uint256 _amount) internal virtual;

    /**
     * @dev Internal function to harvest all rewards, redeploy any idle
     * funds and return an accurate accounting of all funds currently
     * held by the Strategy.
     *
     * This should do any needed harvesting, rewards selling, accrual,
     * redepositing etc. to get the most accurate view of current assets.
     *
     * NOTE: All applicable assets including loose assets should be
     * accounted for in this function.
     *
     * Care should be taken when relying on oracles or swap values rather
     * than actual amounts as all Strategy profit/loss accounting will
     * be done based on this returned value.
     *
     * This can still be called post a shutdown, a strategist can check
     * `TokenizedStrategy.isShutdown()` to decide if funds should be
     * redeployed or simply realize any profits/losses.
     *
     * @return _totalAssets A trusted and accurate account for the total
     * amount of 'asset' the strategy currently holds including idle funds.
     */
    function _harvestAndReport()
        internal
        virtual
        returns (uint256 _totalAssets);

    /*//////////////////////////////////////////////////////////////
                    OPTIONAL TO OVERRIDE BY STRATEGIST
    //////////////////////////////////////////////////////////////*/

    /**
     * @dev Optional function for strategist to override that can
     *  be called in between reports.
     *
     * If '_tend' is used tendTrigger() will also need to be overridden.
     *
     * This call can only be called by a permissioned role so may be
     * through protected relays.
     *
     * This can be used to harvest and compound rewards, deposit idle funds,
     * perform needed position maintenance or anything else that doesn't need
     * a full report for.
     *
     *   EX: A strategy that can not deposit funds without getting
     *       sandwiched can use the tend when a certain threshold
     *       of idle to totalAssets has been reached.
     *
     * This will have no effect on PPS of the strategy till report() is called.
     *
     * @param _totalIdle The current amount of idle funds that are available to deploy.
     */
    function _tend(uint256 _totalIdle) internal virtual {}

    /**
     * @dev Optional trigger to override if tend() will be used by the strategy.
     * This must be implemented if the strategy hopes to invoke _tend().
     *
     * @return . Should return true if tend() should be called by keeper or false if not.
     */
    function _tendTrigger() internal view virtual returns (bool) {
        return false;
    }

    /**
     * @notice Returns if tend() should be called by a keeper.
     *
     * @return . Should return true if tend() should be called by keeper or false if not.
     * @return . Calldata for the tend call.
     */
    function tendTrigger() external view virtual returns (bool, bytes memory) {
        return (
            // Return the status of the tend trigger.
            _tendTrigger(),
            // And the needed calldata either way.
            abi.encodeWithSelector(ITokenizedStrategy.tend.selector)
        );
    }

    /**
     * @notice Gets the max amount of `asset` that an address can deposit.
     * @dev Defaults to an unlimited amount for any address. But can
     * be overridden by strategists.
     *
     * This function will be called before any deposit or mints to enforce
     * any limits desired by the strategist. This can be used for either a
     * traditional deposit limit or for implementing a whitelist etc.
     *
     *   EX:
     *      if(isAllowed[_owner]) return super.availableDepositLimit(_owner);
     *
     * This does not need to take into account any conversion rates
     * from shares to assets. But should know that any non max uint256
     * amounts may be converted to shares. So it is recommended to keep
     * custom amounts low enough as not to cause overflow when multiplied
     * by `totalSupply`.
     *
     * @param . The address that is depositing into the strategy.
     * @return . The available amount the `_owner` can deposit in terms of `asset`
     */
    function availableDepositLimit(
        address /*_owner*/
    ) public view virtual returns (uint256) {
        return type(uint256).max;
    }

    /**
     * @notice Gets the max amount of `asset` that can be withdrawn.
     * @dev Defaults to an unlimited amount for any address. But can
     * be overridden by strategists.
     *
     * This function will be called before any withdraw or redeem to enforce
     * any limits desired by the strategist. This can be used for illiquid
     * or sandwichable strategies. It should never be lower than `totalIdle`.
     *
     *   EX:
     *       return TokenIzedStrategy.totalIdle();
     *
     * This does not need to take into account the `_owner`'s share balance
     * or conversion rates from shares to assets.
     *
     * @param . The address that is withdrawing from the strategy.
     * @return . The available amount that can be withdrawn in terms of `asset`
     */
    function availableWithdrawLimit(
        address /*_owner*/
    ) public view virtual returns (uint256) {
        return type(uint256).max;
    }

    /**
     * @dev Optional function for a strategist to override that will
     * allow management to manually withdraw deployed funds from the
     * yield source if a strategy is shutdown.
     *
     * This should attempt to free `_amount`, noting that `_amount` may
     * be more than is currently deployed.
     *
     * NOTE: This will not realize any profits or losses. A separate
     * {report} will be needed in order to record any profit/loss. If
     * a report may need to be called after a shutdown it is important
     * to check if the strategy is shutdown during {_harvestAndReport}
     * so that it does not simply re-deploy all funds that had been freed.
     *
     * EX:
     *   if(freeAsset > 0 && !TokenizedStrategy.isShutdown()) {
     *       depositFunds...
     *    }
     *
     * @param _amount The amount of asset to attempt to free.
     */
    function _emergencyWithdraw(uint256 _amount) internal virtual {}

    /*//////////////////////////////////////////////////////////////
                        TokenizedStrategy HOOKS
    //////////////////////////////////////////////////////////////*/

    /**
     * @notice Can deploy up to '_amount' of 'asset' in yield source.
     * @dev Callback for the TokenizedStrategy to call during a {deposit}
     * or {mint} to tell the strategy it can deploy funds.
     *
     * Since this can only be called after a {deposit} or {mint}
     * delegateCall to the TokenizedStrategy msg.sender == address(this).
     *
     * Unless a whitelist is implemented this will be entirely permissionless
     * and thus can be sandwiched or otherwise manipulated.
     *
     * @param _amount The amount of 'asset' that the strategy can
     * attempt to deposit in the yield source.
     */
    function deployFunds(uint256 _amount) external virtual onlySelf {
        _deployFunds(_amount);
    }

    /**
     * @notice Should attempt to free the '_amount' of 'asset'.
     * @dev Callback for the TokenizedStrategy to call during a withdraw
     * or redeem to free the needed funds to service the withdraw.
     *
     * This can only be called after a 'withdraw' or 'redeem' delegateCall
     * to the TokenizedStrategy so msg.sender == address(this).
     *
     * @param _amount The amount of 'asset' that the strategy should attempt to free up.
     */
    function freeFunds(uint256 _amount) external virtual onlySelf {
        _freeFunds(_amount);
    }

    /**
     * @notice Returns the accurate amount of all funds currently
     * held by the Strategy.
     * @dev Callback for the TokenizedStrategy to call during a report to
     * get an accurate accounting of assets the strategy controls.
     *
     * This can only be called after a report() delegateCall to the
     * TokenizedStrategy so msg.sender == address(this).
     *
     * @return . A trusted and accurate account for the total amount
     * of 'asset' the strategy currently holds including idle funds.
     */
    function harvestAndReport() external virtual onlySelf returns (uint256) {
        return _harvestAndReport();
    }

    /**
     * @notice Will call the internal '_tend' when a keeper tends the strategy.
     * @dev Callback for the TokenizedStrategy to initiate a _tend call in the strategy.
     *
     * This can only be called after a tend() delegateCall to the TokenizedStrategy
     * so msg.sender == address(this).
     *
     * We name the function `tendThis` so that `tend` calls are forwarded to
     * the TokenizedStrategy.

     * @param _totalIdle The amount of current idle funds that can be
     * deployed during the tend
     */
    function tendThis(uint256 _totalIdle) external virtual onlySelf {
        _tend(_totalIdle);
    }

    /**
     * @notice Will call the internal '_emergencyWithdraw' function.
     * @dev Callback for the TokenizedStrategy during an emergency withdraw.
     *
     * This can only be called after a emergencyWithdraw() delegateCall to
     * the TokenizedStrategy so msg.sender == address(this).
     *
     * We name the function `shutdownWithdraw` so that `emergencyWithdraw`
     * calls are forwarded to the TokenizedStrategy.
     *
     * @param _amount The amount of asset to attempt to free.
     */
    function shutdownWithdraw(uint256 _amount) external virtual onlySelf {
        _emergencyWithdraw(_amount);
    }

    /**
     * @dev Function used to delegate call the TokenizedStrategy with
     * certain `_calldata` and return any return values.
     *
     * This is used to setup the initial storage of the strategy, and
     * can be used by strategist to forward any other call to the
     * TokenizedStrategy implementation.
     *
     * @param _calldata The abi encoded calldata to use in delegatecall.
     * @return . The return value if the call was successful in bytes.
     */
    function _delegateCall(
        bytes memory _calldata
    ) internal returns (bytes memory) {
        // Delegate call the tokenized strategy with provided calldata.
        (bool success, bytes memory result) = tokenizedStrategyAddress
            .delegatecall(_calldata);

        // If the call reverted. Return the error.
        if (!success) {
            assembly {
                let ptr := mload(0x40)
                let size := returndatasize()
                returndatacopy(ptr, 0, size)
                revert(ptr, size)
            }
        }

        // Return the result.
        return result;
    }

    /**
     * @dev Execute a function on the TokenizedStrategy and return any value.
     *
     * This fallback function will be executed when any of the standard functions
     * defined in the TokenizedStrategy are called since they wont be defined in
     * this contract.
     *
     * It will delegatecall the TokenizedStrategy implementation with the exact
     * calldata and return any relevant values.
     *
     */
    fallback() external {
        // load our target address
        address _tokenizedStrategyAddress = tokenizedStrategyAddress;
        // Execute external function using delegatecall and return any value.
        assembly {
            // Copy function selector and any arguments.
            calldatacopy(0, 0, calldatasize())
            // Execute function delegatecall.
            let result := delegatecall(
                gas(),
                _tokenizedStrategyAddress,
                0,
                calldatasize(),
                0,
                0
            )
            // Get any return value
            returndatacopy(0, 0, returndatasize())
            // Return any return value or error back to the caller
            switch result
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

/// @title ErrorsLib
/// @author Morpho Labs
/// @custom:contact security@morpho.org
/// @notice Library exposing error messages.
library ErrorsLib {
    /// @notice Thrown when the caller is not the owner.
    string internal constant NOT_OWNER = "not owner";

    /// @notice Thrown when the LLTV to enable exceeds the maximum LLTV.
    string internal constant MAX_LLTV_EXCEEDED = "max LLTV exceeded";

    /// @notice Thrown when the fee to set exceeds the maximum fee.
    string internal constant MAX_FEE_EXCEEDED = "max fee exceeded";

    /// @notice Thrown when the value is already set.
    string internal constant ALREADY_SET = "already set";

    /// @notice Thrown when the IRM is not enabled at market creation.
    string internal constant IRM_NOT_ENABLED = "IRM not enabled";

    /// @notice Thrown when the LLTV is not enabled at market creation.
    string internal constant LLTV_NOT_ENABLED = "LLTV not enabled";

    /// @notice Thrown when the market is already created.
    string internal constant MARKET_ALREADY_CREATED = "market already created";

    /// @notice Thrown when a token to transfer doesn't have code.
    string internal constant NO_CODE = "no code";

    /// @notice Thrown when the market is not created.
    string internal constant MARKET_NOT_CREATED = "market not created";

    /// @notice Thrown when not exactly one of the input amount is zero.
    string internal constant INCONSISTENT_INPUT = "inconsistent input";

    /// @notice Thrown when zero assets is passed as input.
    string internal constant ZERO_ASSETS = "zero assets";

    /// @notice Thrown when a zero address is passed as input.
    string internal constant ZERO_ADDRESS = "zero address";

    /// @notice Thrown when the caller is not authorized to conduct an action.
    string internal constant UNAUTHORIZED = "unauthorized";

    /// @notice Thrown when the collateral is insufficient to `borrow` or `withdrawCollateral`.
    string internal constant INSUFFICIENT_COLLATERAL =
        "insufficient collateral";

    /// @notice Thrown when the liquidity is insufficient to `withdraw` or `borrow`.
    string internal constant INSUFFICIENT_LIQUIDITY = "insufficient liquidity";

    /// @notice Thrown when the position to liquidate is healthy.
    string internal constant HEALTHY_POSITION = "position is healthy";

    /// @notice Thrown when the authorization signature is invalid.
    string internal constant INVALID_SIGNATURE = "invalid signature";

    /// @notice Thrown when the authorization signature is expired.
    string internal constant SIGNATURE_EXPIRED = "signature expired";

    /// @notice Thrown when the nonce is invalid.
    string internal constant INVALID_NONCE = "invalid nonce";

    /// @notice Thrown when a token transfer reverted.
    string internal constant TRANSFER_REVERTED = "transfer reverted";

    /// @notice Thrown when a token transfer returned false.
    string internal constant TRANSFER_RETURNED_FALSE =
        "transfer returned false";

    /// @notice Thrown when a token transferFrom reverted.
    string internal constant TRANSFER_FROM_REVERTED = "transferFrom reverted";

    /// @notice Thrown when a token transferFrom returned false
    string internal constant TRANSFER_FROM_RETURNED_FALSE =
        "transferFrom returned false";

    /// @notice Thrown when the maximum uint128 is exceeded.
    string internal constant MAX_UINT128_EXCEEDED = "max uint128 exceeded";
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.0;

import {Id} from "../../../interfaces/morpho/IMorpho.sol";

/// @title MorphoStorageLib
/// @author Morpho Labs
/// @custom:contact security@morpho.org
/// @notice Helper library exposing getters to access Morpho storage variables' slot.
/// @dev This library is not used in Morpho itself and is intended to be used by integrators.
library MorphoStorageLib {
    /* SLOTS */

    uint256 internal constant OWNER_SLOT = 0;
    uint256 internal constant FEE_RECIPIENT_SLOT = 1;
    uint256 internal constant POSITION_SLOT = 2;
    uint256 internal constant MARKET_SLOT = 3;
    uint256 internal constant IS_IRM_ENABLED_SLOT = 4;
    uint256 internal constant IS_LLTV_ENABLED_SLOT = 5;
    uint256 internal constant IS_AUTHORIZED_SLOT = 6;
    uint256 internal constant NONCE_SLOT = 7;
    uint256 internal constant ID_TO_MARKET_PARAMS_SLOT = 8;

    /* SLOT OFFSETS */

    uint256 internal constant LOAN_TOKEN_OFFSET = 0;
    uint256 internal constant COLLATERAL_TOKEN_OFFSET = 1;
    uint256 internal constant ORACLE_OFFSET = 2;
    uint256 internal constant IRM_OFFSET = 3;
    uint256 internal constant LLTV_OFFSET = 4;

    uint256 internal constant SUPPLY_SHARES_OFFSET = 0;
    uint256 internal constant BORROW_SHARES_AND_COLLATERAL_OFFSET = 1;

    uint256 internal constant TOTAL_SUPPLY_ASSETS_AND_SHARES_OFFSET = 0;
    uint256 internal constant TOTAL_BORROW_ASSETS_AND_SHARES_OFFSET = 1;
    uint256 internal constant LAST_UPDATE_AND_FEE_OFFSET = 2;

    /* GETTERS */

    function ownerSlot() internal pure returns (bytes32) {
        return bytes32(OWNER_SLOT);
    }

    function feeRecipientSlot() internal pure returns (bytes32) {
        return bytes32(FEE_RECIPIENT_SLOT);
    }

    function positionSupplySharesSlot(
        Id id,
        address user
    ) internal pure returns (bytes32) {
        return
            bytes32(
                uint256(
                    keccak256(
                        abi.encode(
                            user,
                            keccak256(abi.encode(id, POSITION_SLOT))
                        )
                    )
                ) + SUPPLY_SHARES_OFFSET
            );
    }

    function positionBorrowSharesAndCollateralSlot(
        Id id,
        address user
    ) internal pure returns (bytes32) {
        return
            bytes32(
                uint256(
                    keccak256(
                        abi.encode(
                            user,
                            keccak256(abi.encode(id, POSITION_SLOT))
                        )
                    )
                ) + BORROW_SHARES_AND_COLLATERAL_OFFSET
            );
    }

    function marketTotalSupplyAssetsAndSharesSlot(
        Id id
    ) internal pure returns (bytes32) {
        return
            bytes32(
                uint256(keccak256(abi.encode(id, MARKET_SLOT))) +
                    TOTAL_SUPPLY_ASSETS_AND_SHARES_OFFSET
            );
    }

    function marketTotalBorrowAssetsAndSharesSlot(
        Id id
    ) internal pure returns (bytes32) {
        return
            bytes32(
                uint256(keccak256(abi.encode(id, MARKET_SLOT))) +
                    TOTAL_BORROW_ASSETS_AND_SHARES_OFFSET
            );
    }

    function marketLastUpdateAndFeeSlot(Id id) internal pure returns (bytes32) {
        return
            bytes32(
                uint256(keccak256(abi.encode(id, MARKET_SLOT))) +
                    LAST_UPDATE_AND_FEE_OFFSET
            );
    }

    function isIrmEnabledSlot(address irm) internal pure returns (bytes32) {
        return keccak256(abi.encode(irm, IS_IRM_ENABLED_SLOT));
    }

    function isLltvEnabledSlot(uint256 lltv) internal pure returns (bytes32) {
        return keccak256(abi.encode(lltv, IS_LLTV_ENABLED_SLOT));
    }

    function isAuthorizedSlot(
        address authorizer,
        address authorizee
    ) internal pure returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    authorizee,
                    keccak256(abi.encode(authorizer, IS_AUTHORIZED_SLOT))
                )
            );
    }

    function nonceSlot(address authorizer) internal pure returns (bytes32) {
        return keccak256(abi.encode(authorizer, NONCE_SLOT));
    }

    function idToLoanTokenSlot(Id id) internal pure returns (bytes32) {
        return
            bytes32(
                uint256(keccak256(abi.encode(id, ID_TO_MARKET_PARAMS_SLOT))) +
                    LOAN_TOKEN_OFFSET
            );
    }

    function idToCollateralTokenSlot(Id id) internal pure returns (bytes32) {
        return
            bytes32(
                uint256(keccak256(abi.encode(id, ID_TO_MARKET_PARAMS_SLOT))) +
                    COLLATERAL_TOKEN_OFFSET
            );
    }

    function idToOracleSlot(Id id) internal pure returns (bytes32) {
        return
            bytes32(
                uint256(keccak256(abi.encode(id, ID_TO_MARKET_PARAMS_SLOT))) +
                    ORACLE_OFFSET
            );
    }

    function idToIrmSlot(Id id) internal pure returns (bytes32) {
        return
            bytes32(
                uint256(keccak256(abi.encode(id, ID_TO_MARKET_PARAMS_SLOT))) +
                    IRM_OFFSET
            );
    }

    function idToLltvSlot(Id id) internal pure returns (bytes32) {
        return
            bytes32(
                uint256(keccak256(abi.encode(id, ID_TO_MARKET_PARAMS_SLOT))) +
                    LLTV_OFFSET
            );
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

/// @title Callback for IUniswapV3PoolActions#swap
/// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface
interface IUniswapV3SwapCallback {
    /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap.
    /// @dev In the implementation you must pay the pool tokens owed for the swap.
    /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory.
    /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped.
    /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token0 to the pool.
    /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token1 to the pool.
    /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call
    function uniswapV3SwapCallback(
        int256 amount0Delta,
        int256 amount1Delta,
        bytes calldata data
    ) external;
}