// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.28;

import {IERC20} from "openzeppelin5/token/ERC20/IERC20.sol";
import {SafeERC20} from "openzeppelin5/token/ERC20/utils/SafeERC20.sol";

import {ILeverageUsingSiloFlashloan} from "../interfaces/ILeverageUsingSiloFlashloan.sol";

import {GeneralSwapModule, IGeneralSwapModule} from "./modules/GeneralSwapModule.sol";
import {LeverageUsingSiloFlashloan} from "./LeverageUsingSiloFlashloan.sol";
import {RescueModule} from "./modules/RescueModule.sol";

/// @notice This contract allow to create and close leverage position using flashloan and swap.
contract LeverageUsingSiloFlashloanWithGeneralSwap is
    ILeverageUsingSiloFlashloan,
    LeverageUsingSiloFlashloan
{
    using SafeERC20 for IERC20;

    string public constant DESCRIPTION = "Leverage with silo flashloan and 0x (or compatible) swap";

    /// @notice The swap module is designed to execute external calls and is under the caller's full control.
    /// It can call any contract using any method. NEVER approve any tokens for it!
    IGeneralSwapModule public immutable SWAP_MODULE;

    constructor (
        address _router,
        address _native
    ) RescueModule(_router) LeverageUsingSiloFlashloan(_native) {
        SWAP_MODULE = new GeneralSwapModule();
    }

    function _fillQuote(bytes memory _swapArgs, uint256 _maxApprovalAmount)
        internal
        virtual
        override
        returns (uint256 amountOut)
    {
        IGeneralSwapModule.SwapArgs memory swapArgs = abi.decode(_swapArgs, (IGeneralSwapModule.SwapArgs));

        uint256 sellTokenBalance = IERC20(swapArgs.sellToken).balanceOf(address(this));
        IERC20(swapArgs.sellToken).safeTransfer(address(SWAP_MODULE), sellTokenBalance);

        amountOut = SWAP_MODULE.fillQuote(swapArgs, _maxApprovalAmount);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";
import {Address} from "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 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 An operation with an ERC-20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @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.encodeCall(token.transfer, (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.encodeCall(token.transferFrom, (from, to, 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);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @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.encodeCall(token.approve, (spender, value));

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

    /**
     * @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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(token).code.length > 0;
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

import {ISilo, IERC3156FlashLender} from "./ISilo.sol";
import {IGeneralSwapModule} from "./IGeneralSwapModule.sol";

/// @title LeverageUsingSiloFlashloan Interface
/// @notice Interface for a contract that enables leveraged deposits using flash loans from silo
/// and token swaps with 0x os compatible interface
interface ILeverageUsingSiloFlashloan {
    enum LeverageAction {
        Undefined,
        Open,
        Close
    }

    /// @notice Parameters for a flash loan
    /// @param flashloanTarget The address of the contract providing the flash loan.
    /// For opening position it should be equal to swap amount in.
    /// @param amount The amount of tokens to borrow
    struct FlashArgs {
        address flashloanTarget;
        uint256 amount;
    }

    /// @notice Parameters for deposit after leverage
    /// @param silo Target Silo for depositing
    /// @param amount Raw deposit amount (excluding flashloan)
    /// @param collateralType The type of collateral to use
    struct DepositArgs {
        ISilo silo;
        uint256 amount;
        ISilo.CollateralType collateralType;
    }

    /// @param flashloanTarget The address of the contract providing the flash loan, it must have enough liquidity
    /// to cover borrower debt
    /// @param siloWithCollateral address of silo with collateral, the other silo is expected to have debt
    /// @param collateralType The type of collateral to use
    struct CloseLeverageArgs {
        address flashloanTarget;
        ISilo siloWithCollateral;
        ISilo.CollateralType collateralType;
    }

    /// @dev owner argument in signature should be msg.sender, spender should be leverage contract
    struct Permit {
        uint256 value;
        uint256 deadline;
        uint8 v;
        bytes32 r;
        bytes32 s;
    }

    event OpenLeverage(
        address indexed borrower,
        uint256 borrowerDeposit,
        uint256 swapAmountOut,
        uint256 flashloanAmount,
        uint256 totalDeposit,
        uint256 totalBorrow,
        uint256 leverageFee,
        uint256 flashloanFee
    );

    event CloseLeverage(
        address indexed borrower,
        uint256 flashloanAmount,
        uint256 flashloanFee,
        uint256 swapAmountOut,
        uint256 depositWithdrawn
    );

    error EmptyNativeToken();
    error IncorrectNativeTokenAmount();
    error FlashloanFailed();
    error InvalidFlashloanLender();
    error InvalidInitiator();
    error UnknownAction();
    error SwapDidNotCoverObligations();
    error InvalidSilo();

    function SWAP_MODULE() external view returns (IGeneralSwapModule);

    /// @notice Performs leverage operation using a flash loan and token swap. Does not support fee on transfer tokens.
    /// It also does not support borrow on same asset.
    /// @dev Reverts if the amount is so high that fee calculation fails
    /// This method requires approval for transfer collateral from borrower to leverage contract and to create
    /// debt position. Approval for collateral can be done using Permit (if asset supports it), for that case please
    /// use `openLeveragePositionPermit`
    /// @param _msgSender The address of the sender (provided by the leverage router)
    /// @param _flashArgs Flash loan configuration
    /// @param _swapArgs Swap call data and settings, that will swap all flashloan amount into collateral
    /// @param _depositArgs Final deposit configuration into a Silo
    function openLeveragePosition(
        address _msgSender,
        FlashArgs calldata _flashArgs,
        bytes calldata _swapArgs,
        DepositArgs calldata _depositArgs
    ) external payable;

    /// @notice Performs leverage operation using a flash loan and token swap. Does not support fee on transfer tokens.
    /// It also does not support borrow on same asset.
    /// @dev Reverts if the amount is so high that fee calculation fails
    /// @param _msgSender The address of the sender (provided by the leverage router)
    /// @param _flashArgs Flash loan configuration
    /// @param _swapArgs Swap call data and settings, that will swap all flashloan amount into collateral
    /// @param _depositArgs Final deposit configuration into a Silo
    /// @param _depositAllowance Permit for leverage contract to transfer collateral from borrower
    function openLeveragePositionPermit(
        address _msgSender,
        FlashArgs calldata _flashArgs,
        bytes calldata _swapArgs,
        DepositArgs calldata _depositArgs,
        Permit calldata _depositAllowance
    ) external;

    /// @notice Closes opened leveraged position.
    /// Does not support fee on transfer tokens. It also does not support borrow on same asset.
    /// @dev This method requires approval for withdraw all collateral (so minimal requires amount for allowance is
    /// borrower balance). Approval can be done using Permit, for that case please use `closeLeveragePositionPermit`
    /// @param _msgSender The address of the sender (provided by the leverage router)
    /// @param _swapArgs Swap call data and settings, it should swap enough collateral to repay flashloan in debt token
    /// @param _closeLeverageArgs configuration for closing position
    function closeLeveragePosition(
        address _msgSender,
        bytes calldata _swapArgs,
        CloseLeverageArgs calldata _closeLeverageArgs
    ) external;

    /// @notice Closes opened leveraged position.
    /// Does not support fee on transfer tokens. It also does not support borrow on same asset.
    /// @dev This method requires approval for withdraw all collateral (so minimal requires amount for allowance is
    /// borrower balance). Approval is done using Permit
    /// @param _msgSender The address of the sender (provided by the leverage router)
    /// @param _swapArgs Swap call data and settings, it should swap enough collateral to repay flashloan in debt token
    /// @param _closeLeverageArgs configuration for closing position
    /// @param _withdrawAllowance Permit for leverage contract to withdraw all borrower collateral or protected tokens
    function closeLeveragePositionPermit(
        address _msgSender,
        bytes calldata _swapArgs,
        CloseLeverageArgs calldata _closeLeverageArgs,
        Permit calldata _withdrawAllowance
    ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.28;

import {SafeERC20} from "openzeppelin5/token/ERC20/utils/SafeERC20.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import {RevertLib} from "../../lib/RevertLib.sol";
import {IGeneralSwapModule} from "../../interfaces/IGeneralSwapModule.sol";

/// @title ERC20 General use Swap Module
/// @notice Enables ERC20 token swaps via an external exchange (e.g., 0x, ODOS, Pendle)
/// @dev Based on the 0x demo contract:
/// https://github.com/0xProject/0x-api-starter-guide-code/blob/master/contracts/SimpleTokenSwap.sol
/// The swap module is designed to execute external calls and is under the caller's full control.
/// It can call any contract using any method. NEVER approve any tokens for it!
contract GeneralSwapModule is IGeneralSwapModule {
    using SafeERC20 for IERC20;

    /// @notice Executes a token swap using a prebuilt swap quote
    /// @dev The contract must hold the sell token balance before calling.
    /// @param _swapArgs SwapArgs struct containing all parameters for executing a swap
    /// @param _maxApprovalAmount Amount of sell token to approve before the swap
    /// @return amountOut Amount of buy token received after the swap including any previous balance that contract has
    function fillQuote(SwapArgs memory _swapArgs, uint256 _maxApprovalAmount)
        external
        virtual
        returns (uint256 amountOut)
    {
        if (_swapArgs.exchangeProxy == address(0)) revert ExchangeAddressZero();

        // Approve token for spending by the exchange
        IERC20(_swapArgs.sellToken).forceApprove(_swapArgs.allowanceTarget, _maxApprovalAmount);

        // Perform low-level call to any method and any smart contract provided by the caller.
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory data) = _swapArgs.exchangeProxy.call(_swapArgs.swapCallData);
        if (!success) RevertLib.revertBytes(data, SwapCallFailed.selector);

        amountOut = _transferBalanceToSender(_swapArgs.buyToken);
        if (amountOut == 0) revert ZeroAmountOut();

        _transferBalanceToSender(_swapArgs.sellToken);
    }

    function _transferBalanceToSender(address _token) internal virtual returns (uint256 balance) {
        balance = IERC20(_token).balanceOf(address(this));

        if (balance != 0) {
            IERC20(_token).safeTransfer(msg.sender, balance);
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.28;

import {IERC20} from "openzeppelin5/token/ERC20/IERC20.sol";
import {IERC20Permit} from "openzeppelin5/token/ERC20/extensions/IERC20Permit.sol";
import {SafeERC20} from "openzeppelin5/token/ERC20/utils/SafeERC20.sol";

import {RevertLib} from "../lib/RevertLib.sol";

import {ISilo} from "../interfaces/ISilo.sol";
import {ILeverageUsingSiloFlashloan} from "../interfaces/ILeverageUsingSiloFlashloan.sol";
import {IERC3156FlashBorrower} from "../interfaces/IERC3156FlashBorrower.sol";
import {IERC3156FlashLender} from "../interfaces/IERC3156FlashLender.sol";
import {IWrappedNativeToken} from "../interfaces/IWrappedNativeToken.sol";

import {RescueModule} from "./modules/RescueModule.sol";
import {LeverageTxState} from "./modules/LeverageTxState.sol";

/*
    @title Contract with leverage logic
    @notice What does leverage means?

    You are using a Silo lending protocol that allows you to supply collateral and borrow against it.

    Collateral asset: ETH (price = $1,000)
    Debt asset: USDC (stablecoin = $1)

    Step-by-step to reach 2x leverage:

    Start with $1,000 worth of ETH.
    Leverage contract will flashloan $1,000 USDC. Flashloaned USDC will be swapped into 1 ETH.
    Contract will deposit 2 ETH as collateral and borrow 1000 USDC on your behalf against your ETH to repay flashloan.

    Now you hold 2 ETH total exposure

    - 1 ETH from your original deposit
    - 1 ETH bought using flashloan funds

    Your total ETH exposure is $2,000, but your own money is $1,000.

    So, your leverage is: Leverage = Total Exposure / Your Own Capital = 2000 / 1000 = 2.0𝑥

    RISK: If ETH price drops, your position can be liquidated.
*/
abstract contract LeverageUsingSiloFlashloan is
    ILeverageUsingSiloFlashloan,
    IERC3156FlashBorrower,
    RescueModule,
    LeverageTxState
{
    using SafeERC20 for IERC20;

    IWrappedNativeToken public immutable NATIVE_TOKEN;

    bytes32 internal constant _FLASHLOAN_CALLBACK = keccak256("ERC3156FlashBorrower.onFlashLoan");

    constructor(address _native) {
        require(_native != address(0), EmptyNativeToken());

        NATIVE_TOKEN = IWrappedNativeToken(_native);
    }

    /// @inheritdoc ILeverageUsingSiloFlashloan
    function openLeveragePositionPermit(
        address _msgSender,
        FlashArgs calldata _flashArgs,
        bytes calldata _swapArgs,
        DepositArgs calldata _depositArgs,
        Permit calldata _depositAllowance
    )
        external
        virtual
    {
        _executePermit(_msgSender, _depositAllowance, _depositArgs.silo.asset());

        openLeveragePosition(_msgSender, _flashArgs, _swapArgs, _depositArgs);
    }

    /// @inheritdoc ILeverageUsingSiloFlashloan
    function openLeveragePosition(
        address _msgSender,
        FlashArgs calldata _flashArgs,
        bytes calldata _swapArgs,
        DepositArgs calldata _depositArgs
    )
        public
        payable
        virtual
        onlyRouter
        nonReentrant
        setupTxState(_msgSender, _depositArgs.silo, LeverageAction.Open, _flashArgs.flashloanTarget)
    {
        _txMsgValue = msg.value;

        require(IERC3156FlashLender(_flashArgs.flashloanTarget).flashLoan({
            _receiver: this,
            _token: ISilo(_flashArgs.flashloanTarget).asset(),
            _amount: _flashArgs.amount,
            _data: abi.encode(_swapArgs, _depositArgs)
        }), FlashloanFailed());
    }

    /// @inheritdoc ILeverageUsingSiloFlashloan
    function closeLeveragePositionPermit(
        address _msgSender,
        bytes calldata _swapArgs,
        CloseLeverageArgs calldata _closeArgs,
        Permit calldata _withdrawAllowance
    )
        external
        virtual
    {
        address shareTokenToApprove = address(_closeArgs.siloWithCollateral);
        
        if (_closeArgs.collateralType == ISilo.CollateralType.Protected) {
            (
                shareTokenToApprove,,
            ) = _closeArgs.siloWithCollateral.config().getShareTokens(address(_closeArgs.siloWithCollateral));
        }

        _executePermit(_msgSender, _withdrawAllowance, shareTokenToApprove);

        closeLeveragePosition(_msgSender, _swapArgs, _closeArgs);
    }

    /// @inheritdoc ILeverageUsingSiloFlashloan
    function closeLeveragePosition(
        address _msgSender,
        bytes calldata _swapArgs,
        CloseLeverageArgs calldata _closeArgs
    )
        public
        virtual
        onlyRouter
        nonReentrant
        setupTxState(_msgSender, _closeArgs.siloWithCollateral, LeverageAction.Close, _closeArgs.flashloanTarget)
    {
        require(IERC3156FlashLender(_closeArgs.flashloanTarget).flashLoan({
            _receiver: this,
            _token: ISilo(_closeArgs.flashloanTarget).asset(),
            _amount: _resolveOtherSilo(_closeArgs.siloWithCollateral).maxRepay(_msgSender),
            _data: abi.encode(_swapArgs, _closeArgs)
        }), FlashloanFailed());
    }

    /// @inheritdoc IERC3156FlashBorrower
    function onFlashLoan(
        address /* _initiator */,
        address _borrowToken,
        uint256 _flashloanAmount,
        uint256 _flashloanFee,
        bytes calldata _data
    )
        external
        returns (bytes32)
    {
        // this check prevents call `onFlashLoan` directly
        require(_txFlashloanTarget == msg.sender, InvalidFlashloanLender());

        if (_txAction == LeverageAction.Open) {
            _openLeverage(_flashloanAmount, _flashloanFee, _data);
        } else if (_txAction == LeverageAction.Close) {
            _closeLeverage(_borrowToken, _flashloanAmount, _flashloanFee, _data);
        } else revert UnknownAction();

        // approval for repay flashloan
        IERC20(_borrowToken).forceApprove(_txFlashloanTarget, _flashloanAmount + _flashloanFee);

        // by resetting `_txFlashloanTarget` we basically making this method nonReentrant
        _txFlashloanTarget = address(0);
        return _FLASHLOAN_CALLBACK;
    }

    function _openLeverage(
        uint256 _flashloanAmount,
        uint256 _flashloanFee,
        bytes calldata _data
    )
        internal
    {
        DepositArgs memory depositArgs;
        uint256 collateralAmountAfterSwap;

        {
            bytes memory swapArgs;

            (swapArgs, depositArgs) = abi.decode(_data, (bytes, DepositArgs));

            // swap all flashloan (debt token) amount into collateral token
            collateralAmountAfterSwap = _fillQuote(swapArgs, _flashloanAmount);
        }

        uint256 totalDeposit = depositArgs.amount + collateralAmountAfterSwap;

        // Fee is taken on totalDeposit = user deposit amount + collateral amount after swap
        uint256 feeForLeverage = ROUTER.calculateLeverageFee(totalDeposit);

        totalDeposit -= feeForLeverage;

        address collateralAsset = depositArgs.silo.asset();

        _deposit({_depositArgs: depositArgs, _totalDeposit: totalDeposit, _asset: collateralAsset});

        {
            ISilo borrowSilo = _resolveOtherSilo(depositArgs.silo);

            // borrow asset wil be used to repay flashloan with fee
            borrowSilo.borrow({
                _assets: _flashloanAmount + _flashloanFee,
                _receiver: address(this),
                _borrower: _txMsgSender
            });
        }

        emit OpenLeverage({
            borrower: _txMsgSender,
            borrowerDeposit: depositArgs.amount,
            swapAmountOut: collateralAmountAfterSwap,
            flashloanAmount: _flashloanAmount,
            totalDeposit: totalDeposit,
            totalBorrow: _flashloanAmount + _flashloanFee,
            leverageFee: feeForLeverage,
            flashloanFee: _flashloanFee
        });

        _payLeverageFee(collateralAsset, feeForLeverage);
    }

    function _deposit(DepositArgs memory _depositArgs, uint256 _totalDeposit, address _asset) internal virtual {
        _transferTokensFromUser(_asset, _depositArgs.amount);

        IERC20(_asset).forceApprove(address(_depositArgs.silo), _totalDeposit);

        _depositArgs.silo.deposit({
            _assets: _totalDeposit,
            _receiver: _txMsgSender,
            _collateralType: _depositArgs.collateralType
        });
    }
    
    function _closeLeverage(
        address _debtToken,
        uint256 _flashloanAmount,
        uint256 _flashloanFee,
        bytes calldata _data
    )
        internal
    {
        (
            bytes memory swapArgs,
            CloseLeverageArgs memory closeArgs
        ) = abi.decode(_data, (bytes, CloseLeverageArgs));

        ISilo siloWithDebt = _resolveOtherSilo(closeArgs.siloWithCollateral);

        IERC20(_debtToken).forceApprove(address(siloWithDebt), _flashloanAmount);

        siloWithDebt.repayShares(_getBorrowerTotalShareDebtBalance(siloWithDebt), _txMsgSender);

        uint256 sharesToRedeem = _getBorrowerTotalShareCollateralBalance(closeArgs);

        // withdraw all collateral
        uint256 withdrawnDeposit = closeArgs.siloWithCollateral.redeem({
            _shares: sharesToRedeem,
            _receiver: address(this),
            _owner: _txMsgSender,
            _collateralType: closeArgs.collateralType
        });

        // swap collateral to debt to repay flashloan
        uint256 availableDebtAssets = _fillQuote(swapArgs, withdrawnDeposit);

        uint256 obligation = _flashloanAmount + _flashloanFee;
        require(availableDebtAssets >= obligation, SwapDidNotCoverObligations());

        uint256 borrowerDebtChange = availableDebtAssets - obligation;

        emit CloseLeverage({
            borrower: _txMsgSender,
            flashloanAmount: _flashloanAmount,
            flashloanFee: _flashloanFee,
            swapAmountOut: availableDebtAssets,
            depositWithdrawn: withdrawnDeposit
        });

        if (borrowerDebtChange != 0) IERC20(_debtToken).safeTransfer(_txMsgSender, borrowerDebtChange);

        IERC20 collateralAsset = IERC20(closeArgs.siloWithCollateral.asset());
        uint256 collateralToTransfer = collateralAsset.balanceOf(address(this));
        if (collateralToTransfer != 0) collateralAsset.safeTransfer(_txMsgSender, collateralToTransfer);
    }

    function _fillQuote(bytes memory _swapArgs, uint256 _maxApprovalAmount)
        internal
        virtual
        returns (uint256 amountOut);

    function _getBorrowerTotalShareDebtBalance(ISilo _siloWithDebt)
        internal
        view
        virtual
        returns (uint256 repayShareBalance)
    {
        (,, address shareDebtToken) = _txSiloConfig.getShareTokens(address(_siloWithDebt));
        repayShareBalance = IERC20(shareDebtToken).balanceOf(_txMsgSender);
    }

    function _getBorrowerTotalShareCollateralBalance(CloseLeverageArgs memory _closeArgs)
        internal
        view
        virtual
        returns (uint256 balanceOf)
    {
        if (_closeArgs.collateralType == ISilo.CollateralType.Collateral) {
            return _closeArgs.siloWithCollateral.balanceOf(_txMsgSender);
        }

        (address protectedShareToken,,) = _txSiloConfig.getShareTokens(address(_closeArgs.siloWithCollateral));

        balanceOf = ISilo(protectedShareToken).balanceOf(_txMsgSender);
    }

    function _resolveOtherSilo(ISilo _thisSilo) internal view returns (ISilo otherSilo) {
        (address silo0, address silo1) = _txSiloConfig.getSilos();
        require(address(_thisSilo) == silo0 || address(_thisSilo) == silo1, InvalidSilo());

        otherSilo = ISilo(silo0 == address(_thisSilo) ? silo1 : silo0);
    }

    function _executePermit(address _msgSender, Permit memory _permit, address _token) internal virtual {
        if (_permit.deadline == 0) return;

        try IERC20Permit(_token).permit({
            owner: _msgSender,
            spender: address(this),
            value: _permit.value,
            deadline: _permit.deadline,
            v: _permit.v,
            r: _permit.r,
            s: _permit.s
        }) {
            // execution successful
        } catch {
            // on fail we still want to try, in case permit was executed by frontrun
        }
    }

    function _transferTokensFromUser(address _asset, uint256 _expectedValue) internal {
        if (_txMsgValue == 0) {
            // transfer collateral tokens from borrower
            IERC20(_asset).safeTransferFrom(_txMsgSender, address(this), _expectedValue);
        } else {
            require(_txMsgValue == _expectedValue, IncorrectNativeTokenAmount());

            NATIVE_TOKEN.deposit{value: _txMsgValue}();
            _txMsgValue = 0;
        }
    }

    function _payLeverageFee(address _token, uint256 _leverageFee) internal virtual {
        if (_leverageFee != 0) IERC20(_token).safeTransfer(ROUTER.revenueReceiver(), _leverageFee);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.28;

import {SafeERC20} from "openzeppelin5/token/ERC20/utils/SafeERC20.sol";
import {IERC20} from "openzeppelin5/token/ERC20/IERC20.sol";

import {ILeverageRouter} from "silo-core/contracts/interfaces/ILeverageRouter.sol";
import {TransientReentrancy} from "../../hooks/_common/TransientReentrancy.sol";

/// @title Rescue Module for Leverage Operations
/// @notice This contract collects and distributes revenue from leveraged operations.
abstract contract RescueModule is TransientReentrancy {
    using SafeERC20 for IERC20;

    /// @notice The router of this leverage contract
    ILeverageRouter public immutable ROUTER;

    /// @notice Emitted when tokens are rescued
    /// @param token Address of the token
    /// @param amount Amount rescued
    event TokensRescued(address indexed token, uint256 amount);

    /// @dev Thrown when there is no tokens to rescue
    error EmptyBalance(address token);

    /// @dev Thrown when the caller is not the router
    error OnlyRouter();

    /// @dev Thrown when caller is not the leverage user
    error OnlyLeverageUser();

    /// @dev Thrown when native token transfer fails
    error NativeTokenTransferFailed();

    constructor(address _router) {
        ROUTER = ILeverageRouter(_router);
    }

    modifier onlyRouter() {
        require(msg.sender == address(ROUTER), OnlyRouter());
        _;
    }

    modifier onlyLeverageUser() {
        require(ROUTER.predictUserLeverageContract(msg.sender) == address(this), OnlyLeverageUser());
        _;
    }

    /// @notice We do not expect anyone else to engage with a contract except the user
    /// for whom this contract instance was cloned.
    function rescueNativeTokens() external nonReentrant onlyLeverageUser {
        uint256 balance = address(this).balance;
        require(balance != 0, EmptyBalance(address(0)));

        (bool success, ) = payable(msg.sender).call{value: balance}("");
        require(success, NativeTokenTransferFailed());

        emit TokensRescued(address(0), balance);
    }

    /// @notice We do not expect anyone else to engage with a contract except the user
    /// for whom this contract instance was cloned.
    /// @param _token ERC20 token to rescue
    function rescueTokens(IERC20 _token) public nonReentrant onlyLeverageUser {
        uint256 balance = _token.balanceOf(address(this));
        require(balance != 0, EmptyBalance(address(_token)));

        address receiver = msg.sender;

        _token.safeTransfer(receiver, balance);
        emit TokensRescued(address(_token), balance);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC1363.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)

pragma solidity ^0.8.20;

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

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert Errors.InsufficientBalance(address(this).balance, amount);
        }

        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert Errors.FailedCall();
        }
    }

    /**
     * @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 or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {Errors.FailedCall} error.
     *
     * 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.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @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`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert Errors.InsufficientBalance(address(this).balance, value);
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

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

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

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {Errors.FailedCall}) in case
     * of an unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {Errors.FailedCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {Errors.FailedCall}.
     */
    function _revert(bytes memory returndata) 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 Errors.FailedCall();
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;

import {IERC4626, IERC20, IERC20Metadata} from "openzeppelin5/interfaces/IERC4626.sol";

import {IERC3156FlashLender} from "./IERC3156FlashLender.sol";
import {ISiloConfig} from "./ISiloConfig.sol";
import {ISiloFactory} from "./ISiloFactory.sol";

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

// solhint-disable ordering
interface ISilo is IERC20, IERC4626, IERC3156FlashLender {
    /// @dev Interest accrual happens on each deposit/withdraw/borrow/repay. View methods work on storage that might be
    ///      outdate. Some calculations require accrued interest to return current state of Silo. This struct is used
    ///      to make a decision inside functions if interest should be accrued in memory to work on updated values.
    enum AccrueInterestInMemory {
        No,
        Yes
    }

    /// @dev Silo has two separate oracles for solvency and maxLtv calculations. MaxLtv oracle is optional. Solvency
    ///      oracle can also be optional if asset is used as denominator in Silo config. For example, in ETH/USDC Silo
    ///      one could setup only solvency oracle for ETH that returns price in USDC. Then USDC does not need an oracle
    ///      because it's used as denominator for ETH and it's "price" can be assume as 1.
    enum OracleType {
        Solvency,
        MaxLtv
    }

    /// @dev There are 3 types of accounting in the system: for non-borrowable collateral deposit called "protected",
    ///      for borrowable collateral deposit called "collateral" and for borrowed tokens called "debt". System does
    ///      identical calculations for each type of accounting but it uses different data. To avoid code duplication
    ///      this enum is used to decide which data should be read.
    enum AssetType {
        Protected, // default
        Collateral,
        Debt
    }

    /// @dev There are 2 types of accounting in the system: for non-borrowable collateral deposit called "protected" and
    ///      for borrowable collateral deposit called "collateral". System does
    ///      identical calculations for each type of accounting but it uses different data. To avoid code duplication
    ///      this enum is used to decide which data should be read.
    enum CollateralType {
        Protected, // default
        Collateral
    }

    /// @dev Types of calls that can be made by the hook receiver on behalf of Silo via `callOnBehalfOfSilo` fn
    enum CallType {
        Call, // default
        Delegatecall
    }

    /// @param _assets Amount of assets the user wishes to withdraw. Use 0 if shares are provided.
    /// @param _shares Shares the user wishes to burn in exchange for the withdrawal. Use 0 if assets are provided.
    /// @param _receiver Address receiving the withdrawn assets
    /// @param _owner Address of the owner of the shares being burned
    /// @param _spender Address executing the withdrawal; may be different than `_owner` if an allowance was set
    /// @param _collateralType Type of the asset being withdrawn (Collateral or Protected)
    struct WithdrawArgs {
        uint256 assets;
        uint256 shares;
        address receiver;
        address owner;
        address spender;
        ISilo.CollateralType collateralType;
    }

    /// @param assets Number of assets the borrower intends to borrow. Use 0 if shares are provided.
    /// @param shares Number of shares corresponding to the assets that the borrower intends to borrow. Use 0 if
    /// assets are provided.
    /// @param receiver Address that will receive the borrowed assets
    /// @param borrower The user who is borrowing the assets
    struct BorrowArgs {
        uint256 assets;
        uint256 shares;
        address receiver;
        address borrower;
    }

    /// @param shares Amount of shares the user wishes to transit.
    /// @param owner owner of the shares after transition.
    /// @param transitionFrom type of collateral that will be transitioned.
    struct TransitionCollateralArgs {
        uint256 shares;
        address owner;
        ISilo.CollateralType transitionFrom;
    }

    struct UtilizationData {
        /// @dev COLLATERAL: Amount of asset token that has been deposited to Silo plus interest earned by depositors.
        /// It also includes token amount that has been borrowed.
        uint256 collateralAssets;
        /// @dev DEBT: Amount of asset token that has been borrowed plus accrued interest.
        uint256 debtAssets;
        /// @dev timestamp of the last interest accrual
        uint64 interestRateTimestamp;
    }

    /// @dev Interest and revenue may be rounded down to zero if the underlying token's decimal is low.
    /// Because of that, we need to store fractions for further calculation to minimize losses.
    struct Fractions {
        /// @dev interest value that we could not convert to full token in 36 decimals, max value for it is 1e18.
        /// this value was not yet apply as interest for borrowers
        uint64 interest;
        /// @dev revenue value that we could not convert to full token in 36 decimals, max value for it is 1e18.
        uint64 revenue;
    }

    struct SiloStorage {
        /// @param daoAndDeployerRevenue Current amount of assets (fees) accrued by DAO and Deployer
        /// but not yet withdrawn
        uint192 daoAndDeployerRevenue;
        /// @dev timestamp of the last interest accrual
        uint64 interestRateTimestamp;
        /// @dev Interest and revenue fractions for more precise calculations
        Fractions fractions;

        /// @dev silo is just for one asset,
        /// but this one asset can be of three types: mapping key is uint256(AssetType), so we store `assets` by type.
        /// Assets based on type:
        /// - PROTECTED COLLATERAL: Amount of asset token that has been deposited to Silo that can be ONLY used
        /// as collateral. These deposits do NOT earn interest and CANNOT be borrowed.
        /// - COLLATERAL: Amount of asset token that has been deposited to Silo plus interest earned by depositors.
        /// It also includes token amount that has been borrowed.
        /// - DEBT: Amount of asset token that has been borrowed plus accrued interest.
        /// `totalAssets` can have outdated value (without interest), if you doing view call (of off-chain call)
        /// please use getters eg `getCollateralAssets()` to fetch value that includes interest.
        mapping(AssetType assetType => uint256 assets) totalAssets;
    }

    /// @notice Emitted on protected deposit
    /// @param sender wallet address that deposited asset
    /// @param owner wallet address that received shares in Silo
    /// @param assets amount of asset that was deposited
    /// @param shares amount of shares that was minted
    event DepositProtected(address indexed sender, address indexed owner, uint256 assets, uint256 shares);

    /// @notice Emitted on protected withdraw
    /// @param sender wallet address that sent transaction
    /// @param receiver wallet address that received asset
    /// @param owner wallet address that owned asset
    /// @param assets amount of asset that was withdrew
    /// @param shares amount of shares that was burn
    event WithdrawProtected(
        address indexed sender, address indexed receiver, address indexed owner, uint256 assets, uint256 shares
    );

    /// @notice Emitted on borrow
    /// @param sender wallet address that sent transaction
    /// @param receiver wallet address that received asset
    /// @param owner wallet address that owes assets
    /// @param assets amount of asset that was borrowed
    /// @param shares amount of shares that was minted
    event Borrow(
        address indexed sender, address indexed receiver, address indexed owner, uint256 assets, uint256 shares
    );

    /// @notice Emitted on repayment
    /// @param sender wallet address that repaid asset
    /// @param owner wallet address that owed asset
    /// @param assets amount of asset that was repaid
    /// @param shares amount of shares that was burn
    event Repay(address indexed sender, address indexed owner, uint256 assets, uint256 shares);

    /// @notice emitted only when collateral has been switched to other one
    event CollateralTypeChanged(address indexed borrower);

    event HooksUpdated(uint24 hooksBefore, uint24 hooksAfter);

    event AccruedInterest(uint256 hooksBefore);

    event FlashLoan(uint256 amount);

    event WithdrawnFees(uint256 daoFees, uint256 deployerFees, bool redirectedDeployerFees);

    event DeployerFeesRedirected(uint256 deployerFees);

    error UnsupportedFlashloanToken();
    error FlashloanAmountTooBig();
    error NothingToWithdraw();
    error ProtectedProtection();
    error NotEnoughLiquidity();
    error NotSolvent();
    error BorrowNotPossible();
    error EarnedZero();
    error FlashloanFailed();
    error AboveMaxLtv();
    error SiloInitialized();
    error OnlyHookReceiver();
    error NoLiquidity();
    error InputCanBeAssetsOrShares();
    error CollateralSiloAlreadySet();
    error RepayTooHigh();
    error ZeroAmount();
    error InputZeroShares();
    error ReturnZeroAssets();
    error ReturnZeroShares();

    /// @return siloFactory The associated factory of the silo
    function factory() external view returns (ISiloFactory siloFactory);

    /// @notice Method for HookReceiver only to call on behalf of Silo
    /// @param _target address of the contract to call
    /// @param _value amount of ETH to send
    /// @param _callType type of the call (Call or Delegatecall)
    /// @param _input calldata for the call
    function callOnBehalfOfSilo(address _target, uint256 _value, CallType _callType, bytes calldata _input)
        external
        payable
        returns (bool success, bytes memory result);

    /// @notice Initialize Silo
    /// @param _siloConfig address of ISiloConfig with full config for this Silo
    function initialize(ISiloConfig _siloConfig) external;

    /// @notice Update hooks configuration for Silo
    /// @dev This function must be called after the hooks configuration is changed in the hook receiver
    function updateHooks() external;

    /// @notice Fetches the silo configuration contract
    /// @return siloConfig Address of the configuration contract associated with the silo
    function config() external view returns (ISiloConfig siloConfig);

    /// @notice Fetches the utilization data of the silo used by IRM
    function utilizationData() external view returns (UtilizationData memory utilizationData);

    /// @notice Fetches the real (available to borrow) liquidity in the silo, it does include interest
    /// @return liquidity The amount of liquidity
    function getLiquidity() external view returns (uint256 liquidity);

    /// @notice Determines if a borrower is solvent
    /// @param _borrower Address of the borrower to check for solvency
    /// @return True if the borrower is solvent, otherwise false
    function isSolvent(address _borrower) external view returns (bool);

    /// @notice Retrieves the raw total amount of assets based on provided type (direct storage access)
    function getTotalAssetsStorage(AssetType _assetType) external view returns (uint256);

    /// @notice Direct storage access to silo storage
    /// @dev See struct `SiloStorage` for more details
    function getSiloStorage()
        external
        view
        returns (
            uint192 daoAndDeployerRevenue,
            uint64 interestRateTimestamp,
            uint256 protectedAssets,
            uint256 collateralAssets,
            uint256 debtAssets
        );

    /// @notice Direct access to silo storage fractions variables
    function getFractionsStorage() external view returns (Fractions memory fractions);

    /// @notice Retrieves the total amount of collateral (borrowable) assets with interest
    /// @return totalCollateralAssets The total amount of assets of type 'Collateral'
    function getCollateralAssets() external view returns (uint256 totalCollateralAssets);

    /// @notice Retrieves the total amount of debt assets with interest
    /// @return totalDebtAssets The total amount of assets of type 'Debt'
    function getDebtAssets() external view returns (uint256 totalDebtAssets);

    /// @notice Retrieves the total amounts of collateral and protected (non-borrowable) assets
    /// @return totalCollateralAssets The total amount of assets of type 'Collateral'
    /// @return totalProtectedAssets The total amount of protected (non-borrowable) assets
    function getCollateralAndProtectedTotalsStorage()
        external
        view
        returns (uint256 totalCollateralAssets, uint256 totalProtectedAssets);

    /// @notice Retrieves the total amounts of collateral and debt assets
    /// @return totalCollateralAssets The total amount of assets of type 'Collateral'
    /// @return totalDebtAssets The total amount of debt assets of type 'Debt'
    function getCollateralAndDebtTotalsStorage()
        external
        view
        returns (uint256 totalCollateralAssets, uint256 totalDebtAssets);

    /// @notice Implements IERC4626.convertToShares for each asset type
    function convertToShares(uint256 _assets, AssetType _assetType) external view returns (uint256 shares);

    /// @notice Implements IERC4626.convertToAssets for each asset type
    function convertToAssets(uint256 _shares, AssetType _assetType) external view returns (uint256 assets);

    /// @notice Implements IERC4626.previewDeposit for protected (non-borrowable) collateral and collateral
    /// @dev Reverts for debt asset type
    function previewDeposit(uint256 _assets, CollateralType _collateralType) external view returns (uint256 shares);

    /// @notice Implements IERC4626.deposit for protected (non-borrowable) collateral and collateral
    /// @dev Reverts for debt asset type
    function deposit(uint256 _assets, address _receiver, CollateralType _collateralType)
        external
        returns (uint256 shares);

    /// @notice Implements IERC4626.previewMint for protected (non-borrowable) collateral and collateral
    /// @dev Reverts for debt asset type
    function previewMint(uint256 _shares, CollateralType _collateralType) external view returns (uint256 assets);

    /// @notice Implements IERC4626.mint for protected (non-borrowable) collateral and collateral
    /// @dev Reverts for debt asset type
    function mint(uint256 _shares, address _receiver, CollateralType _collateralType) external returns (uint256 assets);

    /// @notice Implements IERC4626.maxWithdraw for protected (non-borrowable) collateral and collateral
    /// @dev Reverts for debt asset type
    function maxWithdraw(address _owner, CollateralType _collateralType) external view returns (uint256 maxAssets);

    /// @notice Implements IERC4626.previewWithdraw for protected (non-borrowable) collateral and collateral
    /// @dev Reverts for debt asset type
    function previewWithdraw(uint256 _assets, CollateralType _collateralType) external view returns (uint256 shares);

    /// @notice Implements IERC4626.withdraw for protected (non-borrowable) collateral and collateral
    /// @dev Reverts for debt asset type
    function withdraw(uint256 _assets, address _receiver, address _owner, CollateralType _collateralType)
        external
        returns (uint256 shares);

    /// @notice Implements IERC4626.maxRedeem for protected (non-borrowable) collateral and collateral
    /// @dev Reverts for debt asset type
    function maxRedeem(address _owner, CollateralType _collateralType) external view returns (uint256 maxShares);

    /// @notice Implements IERC4626.previewRedeem for protected (non-borrowable) collateral and collateral
    /// @dev Reverts for debt asset type
    function previewRedeem(uint256 _shares, CollateralType _collateralType) external view returns (uint256 assets);

    /// @notice Implements IERC4626.redeem for protected (non-borrowable) collateral and collateral
    /// @dev Reverts for debt asset type
    function redeem(uint256 _shares, address _receiver, address _owner, CollateralType _collateralType)
        external
        returns (uint256 assets);

    /// @notice Calculates the maximum amount of assets that can be borrowed by the given address
    /// @param _borrower Address of the potential borrower
    /// @return maxAssets Maximum amount of assets that the borrower can borrow, this value is underestimated
    /// That means, in some cases when you borrow maxAssets, you will be able to borrow again eg. up to 2wei
    /// Reason for underestimation is to return value that will not cause borrow revert
    function maxBorrow(address _borrower) external view returns (uint256 maxAssets);

    /// @notice Previews the amount of shares equivalent to the given asset amount for borrowing
    /// @param _assets Amount of assets to preview the equivalent shares for
    /// @return shares Amount of shares equivalent to the provided asset amount
    function previewBorrow(uint256 _assets) external view returns (uint256 shares);

    /// @notice Allows an address to borrow a specified amount of assets
    /// @param _assets Amount of assets to borrow
    /// @param _receiver Address receiving the borrowed assets
    /// @param _borrower Address responsible for the borrowed assets
    /// @return shares Amount of shares equivalent to the borrowed assets
    function borrow(uint256 _assets, address _receiver, address _borrower)
        external returns (uint256 shares);

    /// @notice Calculates the maximum amount of shares that can be borrowed by the given address
    /// @param _borrower Address of the potential borrower
    /// @return maxShares Maximum number of shares that the borrower can borrow
    function maxBorrowShares(address _borrower) external view returns (uint256 maxShares);

    /// @notice Previews the amount of assets equivalent to the given share amount for borrowing
    /// @param _shares Amount of shares to preview the equivalent assets for
    /// @return assets Amount of assets equivalent to the provided share amount
    function previewBorrowShares(uint256 _shares) external view returns (uint256 assets);

    /// @notice Calculates the maximum amount of assets that can be borrowed by the given address
    /// @param _borrower Address of the potential borrower
    /// @return maxAssets Maximum amount of assets that the borrower can borrow, this value is underestimated
    /// That means, in some cases when you borrow maxAssets, you will be able to borrow again eg. up to 2wei
    /// Reason for underestimation is to return value that will not cause borrow revert
    function maxBorrowSameAsset(address _borrower) external view returns (uint256 maxAssets);

    /// @notice Allows an address to borrow a specified amount of assets that will be back up with deposit made with the
    /// same asset
    /// @param _assets Amount of assets to borrow
    /// @param _receiver Address receiving the borrowed assets
    /// @param _borrower Address responsible for the borrowed assets
    /// @return shares Amount of shares equivalent to the borrowed assets
    function borrowSameAsset(uint256 _assets, address _receiver, address _borrower)
        external returns (uint256 shares);

    /// @notice Allows a user to borrow assets based on the provided share amount
    /// @param _shares Amount of shares to borrow against
    /// @param _receiver Address to receive the borrowed assets
    /// @param _borrower Address responsible for the borrowed assets
    /// @return assets Amount of assets borrowed
    function borrowShares(uint256 _shares, address _receiver, address _borrower)
        external
        returns (uint256 assets);

    /// @notice Calculates the maximum amount an address can repay based on their debt shares
    /// @param _borrower Address of the borrower
    /// @return assets Maximum amount of assets the borrower can repay
    function maxRepay(address _borrower) external view returns (uint256 assets);

    /// @notice Provides an estimation of the number of shares equivalent to a given asset amount for repayment
    /// @param _assets Amount of assets to be repaid
    /// @return shares Estimated number of shares equivalent to the provided asset amount
    function previewRepay(uint256 _assets) external view returns (uint256 shares);

    /// @notice Repays a given asset amount and returns the equivalent number of shares
    /// @param _assets Amount of assets to be repaid
    /// @param _borrower Address of the borrower whose debt is being repaid
    /// @return shares The equivalent number of shares for the provided asset amount
    function repay(uint256 _assets, address _borrower) external returns (uint256 shares);

    /// @notice Calculates the maximum number of shares that can be repaid for a given borrower
    /// @param _borrower Address of the borrower
    /// @return shares The maximum number of shares that can be repaid for the borrower
    function maxRepayShares(address _borrower) external view returns (uint256 shares);

    /// @notice Provides a preview of the equivalent assets for a given number of shares to repay
    /// @param _shares Number of shares to preview repayment for
    /// @return assets Equivalent assets for the provided shares
    function previewRepayShares(uint256 _shares) external view returns (uint256 assets);

    /// @notice Allows a user to repay a loan using shares instead of assets
    /// @param _shares The number of shares the borrower wants to repay with
    /// @param _borrower The address of the borrower for whom to repay the loan
    /// @return assets The equivalent assets amount for the provided shares
    function repayShares(uint256 _shares, address _borrower) external returns (uint256 assets);

    /// @notice Transitions assets between borrowable (collateral) and non-borrowable (protected) states
    /// @dev This function allows assets to move between collateral and protected (non-borrowable) states without
    /// leaving the protocol
    /// @param _shares Amount of shares to be transitioned
    /// @param _owner Owner of the assets being transitioned
    /// @param _transitionFrom Specifies if the transition is from collateral or protected assets
    /// @return assets Amount of assets transitioned
    function transitionCollateral(uint256 _shares, address _owner, CollateralType _transitionFrom)
        external
        returns (uint256 assets);

    /// @notice Switches the collateral silo to this silo
    /// @dev Revert if the collateral silo is already set
    function switchCollateralToThisSilo() external;

    /// @notice Accrues interest for the asset and returns the accrued interest amount
    /// @return accruedInterest The total interest accrued during this operation
    function accrueInterest() external returns (uint256 accruedInterest);

    /// @notice only for SiloConfig
    function accrueInterestForConfig(
        address _interestRateModel,
        uint256 _daoFee,
        uint256 _deployerFee
    ) external;

    /// @notice Withdraws earned fees and distributes them to the DAO and deployer fee receivers
    function withdrawFees() external;
}

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

interface IGeneralSwapModule {
    /// @notice data for exchange proxy to perform the swap
    /// @param sellToken The `sellTokenAddress` field from the API response.
    /// @param buyToken The `buyTokenAddress` field from the API response.
    /// @param allowanceTarget The `allowanceTarget` (spender) field from the API response.
    /// @param swapCallData The `data` field from the API response.
    struct SwapArgs {
        address exchangeProxy;
        address sellToken;
        address buyToken;
        address allowanceTarget;
        bytes swapCallData;
    }

    error ExchangeAddressZero();
    error SwapCallFailed();
    error Swap();
    error ZeroAmountOut();

    function fillQuote(SwapArgs memory _swapArgs, uint256 _maxApprovalAmount) external returns (uint256 amountOut);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.28;

library RevertLib {
    function revertBytes(bytes memory _errMsg, string memory _customErr) internal pure {
        if (_errMsg.length > 0) {
            assembly { // solhint-disable-line no-inline-assembly
                revert(add(32, _errMsg), mload(_errMsg))
            }
        }

        revert(_customErr);
    }

    function revertBytes(bytes memory _errMsg, bytes4 _customErrSelector) internal pure {
        if (_errMsg.length > 0) {
            assembly { // solhint-disable-line no-inline-assembly
                revert(add(32, _errMsg), mload(_errMsg))
            }
        }

        revertWithCustomError(_customErrSelector);
    }

    function revertIfError(bytes4 _errorSelector) internal pure {
        if (_errorSelector == 0) return;

        revertWithCustomError(_errorSelector);
    }

    function revertWithCustomError(bytes4 _errorSelector) internal pure {
        bytes memory customError = abi.encodeWithSelector(_errorSelector);

        assembly {
            revert(add(32, customError), mload(customError))
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[ERC-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC-20 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
pragma solidity >=0.5.0;

interface IERC3156FlashBorrower {
    /// @notice During the execution of the flashloan, Silo methods are not taking into consideration the fact,
    /// that some (or all) tokens were transferred as flashloan, therefore some methods can return invalid state
    /// eg. maxWithdraw can return amount that are not available to withdraw during flashlon.
    /// @dev Receive a flash loan.
    /// @param _initiator The initiator of the loan.
    /// @param _token The loan currency.
    /// @param _amount The amount of tokens lent.
    /// @param _fee The additional amount of tokens to repay.
    /// @param _data Arbitrary data structure, intended to contain user-defined parameters.
    /// @return The keccak256 hash of "ERC3156FlashBorrower.onFlashLoan"
    function onFlashLoan(address _initiator, address _token, uint256 _amount, uint256 _fee, bytes calldata _data)
        external
        returns (bytes32);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;

import {IERC3156FlashBorrower} from "./IERC3156FlashBorrower.sol";

/// @notice https://eips.ethereum.org/EIPS/eip-3156
interface IERC3156FlashLender {
    /// @notice Protected deposits are not available for a flash loan.
    /// During the execution of the flashloan, Silo methods are not taking into consideration the fact,
    /// that some (or all) tokens were transferred as flashloan, therefore some methods can return invalid state
    /// eg. maxWithdraw can return amount that are not available to withdraw during flashlon.
    /// @dev Initiate a flash loan.
    /// @param _receiver The receiver of the tokens in the loan, and the receiver of the callback.
    /// @param _token The loan currency.
    /// @param _amount The amount of tokens lent.
    /// @param _data Arbitrary data structure, intended to contain user-defined parameters.
    function flashLoan(IERC3156FlashBorrower _receiver, address _token, uint256 _amount, bytes calldata _data)
        external
        returns (bool);

    /// @dev The amount of currency available to be lent.
    /// @param _token The loan currency.
    /// @return The amount of `token` that can be borrowed.
    function maxFlashLoan(address _token) external view returns (uint256);

    /// @dev The fee to be charged for a given loan.
    /// @param _token The loan currency.
    /// @param _amount The amount of tokens lent.
    /// @return The amount of `token` to be charged for the loan, on top of the returned principal.
    function flashFee(address _token, uint256 _amount) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;

import {IERC20} from "openzeppelin5/token/ERC20/IERC20.sol";

interface IWrappedNativeToken is IERC20 {
    function deposit() external payable;
    function withdraw(uint256 amount) external;
    function balanceOf(address user) external view returns (uint256);
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.28;

import {ILeverageUsingSiloFlashloan} from "../../interfaces/ILeverageUsingSiloFlashloan.sol";
import {ISilo} from "../../interfaces/ISilo.sol";
import {ISiloConfig} from "../../interfaces/ISiloConfig.sol";

/// @dev reentrancy contract that stores  variables for current tx
/// this is done because leverage uses flashloan and because of the flow, we loosing access to eg msg.sender
/// also we can not pass return variables via flashloan
abstract contract LeverageTxState {
    /// @dev origin tx msg.sender, acts also as reentrancy flag
    address internal transient _txMsgSender;

    /// @dev cached silo config
    ISiloConfig internal transient _txSiloConfig;

    /// @dev information about current action
    ILeverageUsingSiloFlashloan.LeverageAction internal transient _txAction;

    /// @dev address of contract from where we getting flashloan
    address internal transient _txFlashloanTarget;

    /// @dev it will inform that we dealing with native token
    uint256 internal transient _txMsgValue;

    modifier setupTxState(
        address _msgSender,
        ISilo _silo,
        ILeverageUsingSiloFlashloan.LeverageAction _action,
        address _flashloanTarget
    ) {
        _txFlashloanTarget = _flashloanTarget;
        _txAction = _action;
        _txMsgSender = _msgSender;
        _txSiloConfig = _silo.config();

        _;

        _txFlashloanTarget = address(0);
        _txAction = ILeverageUsingSiloFlashloan.LeverageAction.Undefined;
        _txMsgSender = address(0);
        _txSiloConfig = ISiloConfig(address(0));
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

import {ISilo} from "./ISilo.sol";
import {ILeverageUsingSiloFlashloan} from "./ILeverageUsingSiloFlashloan.sol";

/// @title ILeverageRouter
/// @notice Leverage router deploys for every user it's own leverage contract.
interface ILeverageRouter {
    /// @notice Emitted when a new leverage contract is created for a user
    event LeverageContractCreated(address indexed user, address indexed leverageContract);

    /// @notice Emitted when the leverage fee is updated
    /// @param leverageFee New leverage fee
    event LeverageFeeChanged(uint256 leverageFee);

    /// @notice Emitted when the revenue receiver address is changed
    /// @param receiver New receiver address
    event RevenueReceiverChanged(address indexed receiver);

    /// @dev Thrown when trying to set the same fee as the current one
    error FeeDidNotChanged();

    /// @dev Thrown when trying to set the same revenue receiver
    error ReceiverDidNotChanged();

    /// @dev Thrown when the receiver address is zero
    error ReceiverZero();

    /// @dev Thrown when the provided fee is invalid (>= 5%)
    error InvalidFee();


    /// @notice Performs leverage operation using a flash loan and token swap
    /// @dev Executes a call to the leverage contract.
    /// @param _flashArgs Flash loan configuration
    /// @param _swapArgs Swap call data and settings, that will swap all flashloan amount into collateral
    /// @param _depositArgs Final deposit configuration into a Silo
    function openLeveragePosition(
        ILeverageUsingSiloFlashloan.FlashArgs calldata _flashArgs,
        bytes calldata _swapArgs,
        ILeverageUsingSiloFlashloan.DepositArgs calldata _depositArgs
    ) external payable;

    /// @notice Performs leverage operation using a flash loan and token swap
    /// @dev Executes a call to the leverage contract.
    /// @param _flashArgs Flash loan configuration
    /// @param _swapArgs Swap call data and settings, that will swap all flashloan amount into collateral
    /// @param _depositArgs Final deposit configuration into a Silo
    /// @param _depositAllowance Permit for leverage contract to transfer collateral from borrower
    function openLeveragePositionPermit(
        ILeverageUsingSiloFlashloan.FlashArgs calldata _flashArgs,
        bytes calldata _swapArgs,
        ILeverageUsingSiloFlashloan.DepositArgs calldata _depositArgs,
        ILeverageUsingSiloFlashloan.Permit calldata _depositAllowance
    ) external;

    /// @dev Closes leverage position by swapping collateral to debt token.
    /// @dev Executes a call to the leverage contract.
    /// @param _swapArgs Swap call data and settings,
    /// that should swap enough collateral to repay flashloan in debt token
    /// @param _closeLeverageArgs configuration for closing position
    function closeLeveragePosition(
        bytes calldata _swapArgs,
        ILeverageUsingSiloFlashloan.CloseLeverageArgs calldata _closeLeverageArgs
    ) external;

    /// @dev Closes leverage position by swapping collateral to debt token.
    /// @dev Executes a call to the leverage contract.
    /// @param _swapArgs Swap call data and settings,
    /// that should swap enough collateral to repay flashloan in debt token
    /// @param _closeLeverageArgs configuration for closing position
    /// @param _withdrawAllowance Permit for leverage contract to withdraw all borrower collateral tokens
    function closeLeveragePositionPermit(
        bytes calldata _swapArgs,
        ILeverageUsingSiloFlashloan.CloseLeverageArgs calldata _closeLeverageArgs,
        ILeverageUsingSiloFlashloan.Permit calldata _withdrawAllowance
    ) external;

    /// @notice Set the address that receives collected revenue
    /// @param _receiver New address to receive fees
    function setRevenueReceiver(address _receiver) external;

    /// @notice Set the leverage fee
    /// @param _fee New leverage fee (must be < 0.05e18)
    function setLeverageFee(uint256 _fee) external;

    /// @notice Returns the leverage fee
    /// @return fee The leverage fee
    function leverageFee() external view returns (uint256 fee);

    /// @notice Returns the revenue receiver
    /// @return receiver Address of the revenue receiver
    function revenueReceiver() external view returns (address receiver);

    /// @notice Returns the leverage contract for a given user
    /// @param _user The address of the user
    /// @return leverageContract
    function predictUserLeverageContract(address _user) external view returns (address leverageContract);

    /// @notice Returns the leverage implementation
    /// @return implementation The leverage implementation
    function LEVERAGE_IMPLEMENTATION() external view returns (address implementation);

    /// @notice Calculates an amount of approval (receive approval) that is required on debt share token in order
    /// to borrow on behalf of user when opening leverage position. This function should only be used when a flash
    /// loan provider is the Silo contract.
    /// @param _flashFrom Silo contract address to take flash loan from
    /// @param _flashAmount amount of flash loan
    /// @return debtReceiveApproval amount of receive approval
    function calculateDebtReceiveApproval(ISilo _flashFrom, uint256 _flashAmount)
        external
        view
        returns (uint256 debtReceiveApproval);

    /// @notice Calculates the leverage fee for a given amount
    /// @dev Will always return at least 1 if fee > 0 and calculation rounds down
    /// @param _amount The amount to calculate the fee for
    /// @return leverageFeeAmount The calculated fee amount
    function calculateLeverageFee(uint256 _amount) external view returns (uint256 leverageFeeAmount);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.28;

abstract contract TransientReentrancy {
    error ReentrancyGuardReentrantCall();

    bool private transient _lock;

    modifier nonReentrant() {
        require(!_lock, ReentrancyGuardReentrantCall());

        _lock = true;
        _;
        _lock = false;
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../token/ERC20/IERC20.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../utils/introspection/IERC165.sol";

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

/**
 * @dev Collection of common custom errors used in multiple contracts
 *
 * IMPORTANT: Backwards compatibility is not guaranteed in future versions of the library.
 * It is recommended to avoid relying on the error API for critical functionality.
 */
library Errors {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error InsufficientBalance(uint256 balance, uint256 needed);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedCall();

    /**
     * @dev The deployment failed.
     */
    error FailedDeployment();
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC4626.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../token/ERC20/IERC20.sol";
import {IERC20Metadata} from "../token/ERC20/extensions/IERC20Metadata.sol";

/**
 * @dev Interface of the ERC-4626 "Tokenized Vault Standard", as defined in
 * https://eips.ethereum.org/EIPS/eip-4626[ERC-4626].
 */
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: MIT
pragma solidity >=0.5.0;

import {ISilo} from "./ISilo.sol";
import {ICrossReentrancyGuard} from "./ICrossReentrancyGuard.sol";

interface ISiloConfig is ICrossReentrancyGuard {
    struct InitData {
        /// @notice Can be address zero if deployer fees are not to be collected. If deployer address is zero then
        /// deployer fee must be zero as well. Deployer will be minted an NFT that gives the right to claim deployer
        /// fees. NFT can be transferred with the right to claim.
        address deployer;

        /// @notice Address of the hook receiver called on every before/after action on Silo. Hook contract also
        /// implements liquidation logic and veSilo gauge connection.
        address hookReceiver;

        /// @notice Deployer's fee in 18 decimals points. Deployer will earn this fee based on the interest earned
        /// by the Silo. Max deployer fee is set by the DAO. At deployment it is 15%.
        uint256 deployerFee;

        /// @notice DAO's fee in 18 decimals points. DAO will earn this fee based on the interest earned
        /// by the Silo. Acceptable fee range fee is set by the DAO. Default at deployment is 5% - 50%.
        uint256 daoFee;

        /// @notice Address of the first token
        address token0;

        /// @notice Address of the solvency oracle. Solvency oracle is used to calculate LTV when deciding if borrower
        /// is solvent or should be liquidated. Solvency oracle is optional and if not set price of 1 will be assumed.
        address solvencyOracle0;

        /// @notice Address of the maxLtv oracle. Max LTV oracle is used to calculate LTV when deciding if borrower
        /// can borrow given amount of assets. Max LTV oracle is optional and if not set it defaults to solvency
        /// oracle. If neither is set price of 1 will be assumed.
        address maxLtvOracle0;

        /// @notice Address of the interest rate model
        address interestRateModel0;

        /// @notice Maximum LTV for first token. maxLTV is in 18 decimals points and is used to determine, if borrower
        /// can borrow given amount of assets. MaxLtv is in 18 decimals points. MaxLtv must be lower or equal to LT.
        uint256 maxLtv0;

        /// @notice Liquidation threshold for first token. LT is used to calculate solvency. LT is in 18 decimals
        /// points. LT must not be lower than maxLTV.
        uint256 lt0;

        /// @notice minimal acceptable LTV after liquidation, in 18 decimals points
        uint256 liquidationTargetLtv0;

        /// @notice Liquidation fee for the first token in 18 decimals points. Liquidation fee is what liquidator earns
        /// for repaying insolvent loan.
        uint256 liquidationFee0;

        /// @notice Flashloan fee sets the cost of taking a flashloan in 18 decimals points
        uint256 flashloanFee0;

        /// @notice Indicates if a beforeQuote on oracle contract should be called before quoting price
        bool callBeforeQuote0;

        /// @notice Address of the second token
        address token1;

        /// @notice Address of the solvency oracle. Solvency oracle is used to calculate LTV when deciding if borrower
        /// is solvent or should be liquidated. Solvency oracle is optional and if not set price of 1 will be assumed.
        address solvencyOracle1;

        /// @notice Address of the maxLtv oracle. Max LTV oracle is used to calculate LTV when deciding if borrower
        /// can borrow given amount of assets. Max LTV oracle is optional and if not set it defaults to solvency
        /// oracle. If neither is set price of 1 will be assumed.
        address maxLtvOracle1;

        /// @notice Address of the interest rate model
        address interestRateModel1;

        /// @notice Maximum LTV for first token. maxLTV is in 18 decimals points and is used to determine,
        /// if borrower can borrow given amount of assets. maxLtv is in 18 decimals points
        uint256 maxLtv1;

        /// @notice Liquidation threshold for first token. LT is used to calculate solvency. LT is in 18 decimals points
        uint256 lt1;

        /// @notice minimal acceptable LTV after liquidation, in 18 decimals points
        uint256 liquidationTargetLtv1;

        /// @notice Liquidation fee is what liquidator earns for repaying insolvent loan.
        uint256 liquidationFee1;

        /// @notice Flashloan fee sets the cost of taking a flashloan in 18 decimals points
        uint256 flashloanFee1;

        /// @notice Indicates if a beforeQuote on oracle contract should be called before quoting price
        bool callBeforeQuote1;
    }

    struct ConfigData {
        uint256 daoFee;
        uint256 deployerFee;
        address silo;
        address token;
        address protectedShareToken;
        address collateralShareToken;
        address debtShareToken;
        address solvencyOracle;
        address maxLtvOracle;
        address interestRateModel;
        uint256 maxLtv;
        uint256 lt;
        uint256 liquidationTargetLtv;
        uint256 liquidationFee;
        uint256 flashloanFee;
        address hookReceiver;
        bool callBeforeQuote;
    }

    struct DepositConfig {
        address silo;
        address token;
        address collateralShareToken;
        address protectedShareToken;
        uint256 daoFee;
        uint256 deployerFee;
        address interestRateModel;
    }

    error OnlySilo();
    error OnlySiloOrTokenOrHookReceiver();
    error WrongSilo();
    error OnlyDebtShareToken();
    error DebtExistInOtherSilo();
    error FeeTooHigh();

    /// @dev It should be called on debt transfer (debt share token transfer).
    /// In the case if the`_recipient` doesn't have configured a collateral silo,
    /// it will be set to the collateral silo of the `_sender`.
    /// @param _sender sender address
    /// @param _recipient recipient address
    function onDebtTransfer(address _sender, address _recipient) external;

    /// @notice Set collateral silo.
    /// @dev Revert if msg.sender is not a SILO_0 or SILO_1.
    /// @dev Always set collateral silo the same as msg.sender.
    /// @param _borrower borrower address
    /// @return collateralSiloChanged TRUE if collateral silo changed
    function setThisSiloAsCollateralSilo(address _borrower) external returns (bool collateralSiloChanged);

    /// @notice Set collateral silo
    /// @dev Revert if msg.sender is not a SILO_0 or SILO_1.
    /// @dev Always set collateral silo opposite to the msg.sender.
    /// @param _borrower borrower address
    /// @return collateralSiloChanged TRUE if collateral silo changed
    function setOtherSiloAsCollateralSilo(address _borrower) external returns (bool collateralSiloChanged);

    /// @notice Accrue interest for the silo
    /// @param _silo silo for which accrue interest
    function accrueInterestForSilo(address _silo) external;

    /// @notice Accrue interest for both silos (SILO_0 and SILO_1 in a config)
    function accrueInterestForBothSilos() external;

    /// @notice Retrieves the collateral silo for a specific borrower.
    /// @dev As a user can deposit into `Silo0` and `Silo1`, this property specifies which Silo
    /// will be used as collateral for the debt. Later on, it will be used for max LTV and solvency checks.
    /// After being set, the collateral silo is never set to `address(0)` again but such getters as
    /// `getConfigsForSolvency`, `getConfigsForBorrow`, `getConfigsForWithdraw` will return empty
    /// collateral silo config if borrower doesn't have debt.
    ///
    /// In the SiloConfig collateral silo is set by the following functions:
    /// `onDebtTransfer` - only if the recipient doesn't have collateral silo set (inherits it from the sender)
    /// This function is called on debt share token transfer (debt transfer).
    /// `setThisSiloAsCollateralSilo` - sets the same silo as the one that calls the function.
    /// `setOtherSiloAsCollateralSilo` - sets the opposite silo as collateral from the one that calls the function.
    ///
    /// In the Silo collateral silo is set by the following functions:
    /// `borrow` - always sets opposite silo as collateral.
    /// If Silo0 borrows, then Silo1 will be collateral and vice versa.
    /// `borrowSameAsset` - always sets the same silo as collateral.
    /// `switchCollateralToThisSilo` - always sets the same silo as collateral.
    /// @param _borrower The address of the borrower for which the collateral silo is being retrieved
    /// @return collateralSilo The address of the collateral silo for the specified borrower
    function borrowerCollateralSilo(address _borrower) external view returns (address collateralSilo);

    /// @notice Retrieves the silo ID
    /// @dev Each silo is assigned a unique ID. ERC-721 token is minted with identical ID to deployer.
    /// An owner of that token receives the deployer fees.
    /// @return siloId The ID of the silo
    function SILO_ID() external view returns (uint256 siloId); // solhint-disable-line func-name-mixedcase

    /// @notice Retrieves the addresses of the two silos
    /// @return silo0 The address of the first silo
    /// @return silo1 The address of the second silo
    function getSilos() external view returns (address silo0, address silo1);

    /// @notice Retrieves the asset associated with a specific silo
    /// @dev This function reverts for incorrect silo address input
    /// @param _silo The address of the silo for which the associated asset is being retrieved
    /// @return asset The address of the asset associated with the specified silo
    function getAssetForSilo(address _silo) external view returns (address asset);

    /// @notice Verifies if the borrower has debt in other silo by checking the debt share token balance
    /// @param _thisSilo The address of the silo in respect of which the debt is checked
    /// @param _borrower The address of the borrower for which the debt is checked
    /// @return hasDebt true if the borrower has debt in other silo
    function hasDebtInOtherSilo(address _thisSilo, address _borrower) external view returns (bool hasDebt);

    /// @notice Retrieves the debt silo associated with a specific borrower
    /// @dev This function reverts if debt present in two silo (should not happen)
    /// @param _borrower The address of the borrower for which the debt silo is being retrieved
    function getDebtSilo(address _borrower) external view returns (address debtSilo);

    /// @notice Retrieves configuration data for both silos. First config is for the silo that is asking for configs.
    /// @param borrower borrower address for which debtConfig will be returned
    /// @return collateralConfig The configuration data for collateral silo (empty if there is no debt).
    /// @return debtConfig The configuration data for debt silo (empty if there is no debt).
    function getConfigsForSolvency(address borrower)
        external
        view
        returns (ConfigData memory collateralConfig, ConfigData memory debtConfig);

    /// @notice Retrieves configuration data for a specific silo
    /// @dev This function reverts for incorrect silo address input.
    /// @param _silo The address of the silo for which configuration data is being retrieved
    /// @return config The configuration data for the specified silo
    function getConfig(address _silo) external view returns (ConfigData memory config);

    /// @notice Retrieves configuration data for a specific silo for withdraw fn.
    /// @dev This function reverts for incorrect silo address input.
    /// @param _silo The address of the silo for which configuration data is being retrieved
    /// @return depositConfig The configuration data for the specified silo (always config for `_silo`)
    /// @return collateralConfig The configuration data for the collateral silo (empty if there is no debt)
    /// @return debtConfig The configuration data for the debt silo (empty if there is no debt)
    function getConfigsForWithdraw(address _silo, address _borrower) external view returns (
        DepositConfig memory depositConfig,
        ConfigData memory collateralConfig,
        ConfigData memory debtConfig
    );

    /// @notice Retrieves configuration data for a specific silo for borrow fn.
    /// @dev This function reverts for incorrect silo address input.
    /// @param _debtSilo The address of the silo for which configuration data is being retrieved
    /// @return collateralConfig The configuration data for the collateral silo (always other than `_debtSilo`)
    /// @return debtConfig The configuration data for the debt silo (always config for `_debtSilo`)
    function getConfigsForBorrow(address _debtSilo)
        external
        view
        returns (ConfigData memory collateralConfig, ConfigData memory debtConfig);

    /// @notice Retrieves fee-related information for a specific silo
    /// @dev This function reverts for incorrect silo address input
    /// @param _silo The address of the silo for which fee-related information is being retrieved.
    /// @return daoFee The DAO fee percentage in 18 decimals points.
    /// @return deployerFee The deployer fee percentage in 18 decimals points.
    /// @return flashloanFee The flashloan fee percentage in 18 decimals points.
    /// @return asset The address of the asset associated with the specified silo.
    function getFeesWithAsset(address _silo)
        external
        view
        returns (uint256 daoFee, uint256 deployerFee, uint256 flashloanFee, address asset);

    /// @notice Retrieves share tokens associated with a specific silo
    /// @dev This function reverts for incorrect silo address input
    /// @param _silo The address of the silo for which share tokens are being retrieved
    /// @return protectedShareToken The address of the protected (non-borrowable) share token
    /// @return collateralShareToken The address of the collateral share token
    /// @return debtShareToken The address of the debt share token
    function getShareTokens(address _silo)
        external
        view
        returns (address protectedShareToken, address collateralShareToken, address debtShareToken);

    /// @notice Retrieves the share token and the silo token associated with a specific silo
    /// @param _silo The address of the silo for which the share token and silo token are being retrieved
    /// @param _collateralType The type of collateral
    /// @return shareToken The address of the share token (collateral or protected collateral)
    /// @return asset The address of the silo token
    function getCollateralShareTokenAndAsset(address _silo, ISilo.CollateralType _collateralType)
        external
        view
        returns (address shareToken, address asset);

    /// @notice Retrieves the share token and the silo token associated with a specific silo
    /// @param _silo The address of the silo for which the share token and silo token are being retrieved
    /// @return shareToken The address of the share token (debt)
    /// @return asset The address of the silo token
    function getDebtShareTokenAndAsset(address _silo)
        external
        view
        returns (address shareToken, address asset);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;

import {IERC721} from "openzeppelin5/interfaces/IERC721.sol";
import {ISiloConfig} from "./ISiloConfig.sol";

interface ISiloFactory is IERC721 {
    struct Range {
        uint128 min;
        uint128 max;
    }

    /// @notice Emitted on the creation of a Silo.
    /// @param implementation Address of the Silo implementation.
    /// @param token0 Address of the first Silo token.
    /// @param token1 Address of the second Silo token.
    /// @param silo0 Address of the first Silo.
    /// @param silo1 Address of the second Silo.
    /// @param siloConfig Address of the SiloConfig.
    event NewSilo(
        address indexed implementation,
        address indexed token0,
        address indexed token1,
        address silo0,
        address silo1,
        address siloConfig
    );

    event BaseURI(string newBaseURI);

    /// @notice Emitted on the update of DAO fee.
    /// @param minDaoFee Value of the new minimal DAO fee.
    /// @param maxDaoFee Value of the new maximal DAO fee.
    event DaoFeeChanged(uint128 minDaoFee, uint128 maxDaoFee);

    /// @notice Emitted on the update of max deployer fee.
    /// @param maxDeployerFee Value of the new max deployer fee.
    event MaxDeployerFeeChanged(uint256 maxDeployerFee);

    /// @notice Emitted on the update of max flashloan fee.
    /// @param maxFlashloanFee Value of the new max flashloan fee.
    event MaxFlashloanFeeChanged(uint256 maxFlashloanFee);

    /// @notice Emitted on the update of max liquidation fee.
    /// @param maxLiquidationFee Value of the new max liquidation fee.
    event MaxLiquidationFeeChanged(uint256 maxLiquidationFee);

    /// @notice Emitted on the change of DAO fee receiver.
    /// @param daoFeeReceiver Address of the new DAO fee receiver.
    event DaoFeeReceiverChanged(address daoFeeReceiver);

    /// @notice Emitted on the change of DAO fee receiver for particular silo
    /// @param silo Address for which new DAO fee receiver is set.
    /// @param daoFeeReceiver Address of the new DAO fee receiver.
    event DaoFeeReceiverChangedForSilo(address silo, address daoFeeReceiver);

    /// @notice Emitted on the change of DAO fee receiver for particular asset
    /// @param asset Address for which new DAO fee receiver is set.
    /// @param daoFeeReceiver Address of the new DAO fee receiver.
    event DaoFeeReceiverChangedForAsset(address asset, address daoFeeReceiver);

    error MissingHookReceiver();
    error ZeroAddress();
    error DaoFeeReceiverZeroAddress();
    error SameDaoFeeReceiver();
    error EmptyToken0();
    error EmptyToken1();
    error MaxFeeExceeded();
    error InvalidFeeRange();
    error SameAsset();
    error SameRange();
    error InvalidIrm();
    error InvalidMaxLtv();
    error InvalidLt();
    error InvalidDeployer();
    error DaoMinRangeExceeded();
    error DaoMaxRangeExceeded();
    error MaxDeployerFeeExceeded();
    error MaxFlashloanFeeExceeded();
    error MaxLiquidationFeeExceeded();
    error InvalidCallBeforeQuote();
    error OracleMisconfiguration();
    error InvalidQuoteToken();
    error HookIsZeroAddress();
    error LiquidationTargetLtvTooHigh();
    error NotYourSilo();
    error ConfigMismatchSilo();
    error ConfigMismatchShareProtectedToken();
    error ConfigMismatchShareDebtToken();
    error ConfigMismatchShareCollateralToken();

    /// @notice Create a new Silo.
    /// @param _siloConfig Silo configuration.
    /// @param _siloImpl Address of the `Silo` implementation.
    /// @param _shareProtectedCollateralTokenImpl Address of the `ShareProtectedCollateralToken` implementation.
    /// @param _shareDebtTokenImpl Address of the `ShareDebtToken` implementation.
    /// @param _deployer Address of the deployer.
    /// @param _creator Address of the creator.
    function createSilo(
        ISiloConfig _siloConfig,
        address _siloImpl,
        address _shareProtectedCollateralTokenImpl,
        address _shareDebtTokenImpl,
        address _deployer,
        address _creator
    )
        external;

    /// @notice NFT ownership represents the deployer fee receiver for the each Silo ID.  After burning, 
    /// the deployer fee is sent to the DAO. Burning doesn't affect Silo's behavior. It is only about fee distribution.
    /// @param _siloIdToBurn silo ID to burn.
    function burn(uint256 _siloIdToBurn) external;

    /// @notice Update the value of DAO fee. Updated value will be used only for a new Silos.
    /// Previously deployed SiloConfigs are immutable.
    /// @param _minFee Value of the new DAO minimal fee.
    /// @param _maxFee Value of the new DAO maximal fee.
    function setDaoFee(uint128 _minFee, uint128 _maxFee) external;

    /// @notice Set the default DAO fee receiver.
    /// @param _newDaoFeeReceiver Address of the new DAO fee receiver.
    function setDaoFeeReceiver(address _newDaoFeeReceiver) external;

    /// @notice Set the new DAO fee receiver for asset, this setup will be used when fee receiver for silo is empty.
    /// @param _asset Address for which new DAO fee receiver is set.
    /// @param _newDaoFeeReceiver Address of the new DAO fee receiver.
    function setDaoFeeReceiverForAsset(address _asset, address _newDaoFeeReceiver) external;

    /// @notice Set the new DAO fee receiver for silo. This setup has highest priority.
    /// @param _silo Address for which new DAO fee receiver is set.
    /// @param _newDaoFeeReceiver Address of the new DAO fee receiver.
    function setDaoFeeReceiverForSilo(address _silo, address _newDaoFeeReceiver) external;

    /// @notice Update the value of max deployer fee. Updated value will be used only for a new Silos max deployer
    /// fee validation. Previously deployed SiloConfigs are immutable.
    /// @param _newMaxDeployerFee Value of the new max deployer fee.
    function setMaxDeployerFee(uint256 _newMaxDeployerFee) external;

    /// @notice Update the value of max flashloan fee. Updated value will be used only for a new Silos max flashloan
    /// fee validation. Previously deployed SiloConfigs are immutable.
    /// @param _newMaxFlashloanFee Value of the new max flashloan fee.
    function setMaxFlashloanFee(uint256 _newMaxFlashloanFee) external;

    /// @notice Update the value of max liquidation fee. Updated value will be used only for a new Silos max
    /// liquidation fee validation. Previously deployed SiloConfigs are immutable.
    /// @param _newMaxLiquidationFee Value of the new max liquidation fee.
    function setMaxLiquidationFee(uint256 _newMaxLiquidationFee) external;
   
    /// @notice Update the base URI.
    /// @param _newBaseURI Value of the new base URI.
    function setBaseURI(string calldata _newBaseURI) external;

    /// @notice Acceptable DAO fee range for new Silos. Denominated in 18 decimals points. 1e18 == 100%.
    function daoFeeRange() external view returns (Range memory);

    /// @notice Max deployer fee for a new Silos. Denominated in 18 decimals points. 1e18 == 100%.
    function maxDeployerFee() external view returns (uint256);

    /// @notice Max flashloan fee for a new Silos. Denominated in 18 decimals points. 1e18 == 100%.
    function maxFlashloanFee() external view returns (uint256);

    /// @notice Max liquidation fee for a new Silos. Denominated in 18 decimals points. 1e18 == 100%.
    function maxLiquidationFee() external view returns (uint256);

    /// @notice The recipient of DAO fees.
    function daoFeeReceiver() external view returns (address);

    /// @notice Get SiloConfig address by Silo id.
    function idToSiloConfig(uint256 _id) external view returns (address);

    /// @notice Get the counter of silos created by the wallet.
    function creatorSiloCounter(address _creator) external view returns (uint256);

    /// @notice Do not use this method to check if silo is secure. Anyone can deploy silo with any configuration
    /// and implementation. Most critical part of verification would be to check who deployed it.
    /// @dev True if the address was deployed using SiloFactory.
    function isSilo(address _silo) external view returns (bool);

    /// @notice Id of a next Silo to be deployed. This is an ID of non-existing Silo outside of createSilo
    /// function call. ID of a first Silo is 1.
    function getNextSiloId() external view returns (uint256);

    /// @notice Get the DAO and deployer fee receivers for a particular Silo address.
    /// @param _silo Silo address.
    /// @return dao DAO fee receiver.
    /// @return deployer Deployer fee receiver.
    function getFeeReceivers(address _silo) external view returns (address dao, address deployer);

    /// @notice Validate InitData for a new Silo. Config will be checked for the fee limits, missing parameters.
    /// @param _initData Silo init data.
    function validateSiloInitData(ISiloConfig.InitData memory _initData) external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;

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

interface IHookReceiver {
    struct HookConfig {
        uint24 hooksBefore;
        uint24 hooksAfter;
    }

    event HookConfigured(address silo, uint24 hooksBefore, uint24 hooksAfter);

    /// @dev Revert if provided silo configuration during initialization is empty
    error EmptySiloConfig();
    /// @dev Revert if the hook receiver is already configured/initialized
    error AlreadyConfigured();
    /// @dev Revert if the caller is not a silo
    error OnlySilo();
    /// @dev Revert if the caller is not a silo or a share token
    error OnlySiloOrShareToken();

    /// @notice Initialize a hook receiver
    /// @param _siloConfig Silo configuration with all the details about the silo
    /// @param _data Data to initialize the hook receiver (if needed)
    function initialize(ISiloConfig _siloConfig, bytes calldata _data) external;

    /// @notice state of Silo before action, can be also without interest, if you need them, call silo.accrueInterest()
    function beforeAction(address _silo, uint256 _action, bytes calldata _input) external;

    function afterAction(address _silo, uint256 _action, bytes calldata _inputAndOutput) external;

    /// @notice return hooksBefore and hooksAfter configuration
    function hookReceiverConfig(address _silo) external view returns (uint24 hooksBefore, uint24 hooksAfter);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC-20 standard.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

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

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

// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;

interface ICrossReentrancyGuard {
    error CrossReentrantCall();
    error CrossReentrancyNotActive();

    /// @notice only silo method for cross Silo reentrancy
    function turnOnReentrancyProtection() external;

    /// @notice only silo method for cross Silo reentrancy
    function turnOffReentrancyProtection() external;

    /// @notice view method for checking cross Silo reentrancy flag
    /// @return entered true if the reentrancy guard is currently set to "entered", which indicates there is a
    /// `nonReentrant` function in the call stack.
    function reentrancyGuardEntered() external view returns (bool entered);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC721.sol)

pragma solidity ^0.8.20;

import {IERC721} from "../token/ERC721/IERC721.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC-721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

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

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

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

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

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

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC-721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or
     *   {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
     *   a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC-721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 tokenId) external;

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

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

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

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

{
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    "silo-core/=silo-core/",
    "silo-oracles/=silo-oracles/",
    "silo-vaults/=silo-vaults/",
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    "chainlink-ccip/=gitmodules/chainlink-ccip/contracts/src/",
    "uniswap/=gitmodules/uniswap/",
    "@uniswap/v3-core/=gitmodules/uniswap/v3-core/",
    "pyth-sdk-solidity/=gitmodules/pyth-sdk-solidity/target_chains/ethereum/sdk/solidity/",
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    "@ensdomains/=node_modules/@ensdomains/",
    "@solidity-parser/=node_modules/prettier-plugin-solidity/node_modules/@solidity-parser/",
    "ERC4626/=gitmodules/crytic/properties/lib/ERC4626/contracts/",
    "aave/=gitmodules/aave/",
    "createx/=gitmodules/pyth-sdk-solidity/lazer/contracts/evm/lib/createx/src/",
    "crytic/=gitmodules/crytic/",
    "ds-test/=gitmodules/openzeppelin-contracts-5/lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=gitmodules/openzeppelin-contracts-5/lib/erc4626-tests/",
    "halmos-cheatcodes/=gitmodules/morpho-blue/lib/halmos-cheatcodes/src/",
    "hardhat/=node_modules/hardhat/",
    "layer-zero-examples/=gitmodules/layer-zero-examples/contracts/",
    "lz_gauges/=gitmodules/lz_gauges/contracts/",
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    "openzeppelin-contracts-upgradeable-5/=gitmodules/openzeppelin-contracts-upgradeable-5/",
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    "solady/=gitmodules/pyth-sdk-solidity/lazer/contracts/evm/lib/createx/lib/solady/",
    "solmate/=gitmodules/crytic/properties/lib/solmate/src/",
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  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
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  "evmVersion": "cancun",
  "viaIR": false,
  "libraries": {}
}

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