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

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {SafeCast} from "@openzeppelin/contracts/utils/math/SafeCast.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {Constants} from "../Constants.sol";
import {DataTypesPeerToPeer} from "./DataTypesPeerToPeer.sol";
import {Errors} from "../Errors.sol";
import {IAddressRegistry} from "./interfaces/IAddressRegistry.sol";
import {IBaseCompartment} from "./interfaces/compartments/IBaseCompartment.sol";
import {IBorrowerGateway} from "./interfaces/IBorrowerGateway.sol";
import {ILenderVaultImpl} from "./interfaces/ILenderVaultImpl.sol";
import {IMysoTokenManager} from "../interfaces/IMysoTokenManager.sol";
import {IQuoteHandler} from "./interfaces/IQuoteHandler.sol";
import {IVaultCallback} from "./interfaces/IVaultCallback.sol";

contract BorrowerGateway is ReentrancyGuard, IBorrowerGateway {
    using SafeERC20 for IERC20Metadata;

    // putting fee info in borrow gateway since borrower always pays this upfront
    address public immutable addressRegistry;
    // index 0: base protocol fee is paid even for swap (no tenor)
    // index 1: protocol fee slope scales protocol fee with tenor
    uint128[2] internal protocolFeeParams;

    constructor(address _addressRegistry) {
        if (_addressRegistry == address(0)) {
            revert Errors.InvalidAddress();
        }
        addressRegistry = _addressRegistry;
    }

    function borrowWithOffChainQuote(
        address lenderVault,
        DataTypesPeerToPeer.BorrowTransferInstructions
            calldata borrowInstructions,
        DataTypesPeerToPeer.OffChainQuote calldata offChainQuote,
        DataTypesPeerToPeer.QuoteTuple calldata quoteTuple,
        bytes32[] calldata proof
    ) external nonReentrant returns (DataTypesPeerToPeer.Loan memory) {
        _checkDeadlineAndRegisteredVault(
            borrowInstructions.deadline,
            lenderVault
        );
        {
            address quoteHandler = IAddressRegistry(addressRegistry)
                .quoteHandler();
            IQuoteHandler(quoteHandler).checkAndRegisterOffChainQuote(
                msg.sender,
                lenderVault,
                offChainQuote,
                quoteTuple,
                proof
            );
        }

        (
            DataTypesPeerToPeer.Loan memory loan,
            uint256 loanId,
            uint256 upfrontFee
        ) = _processBorrowTransaction(
                borrowInstructions,
                offChainQuote.generalQuoteInfo,
                quoteTuple,
                lenderVault
            );

        emit Borrowed(
            lenderVault,
            loan.borrower,
            loan,
            upfrontFee,
            loanId,
            borrowInstructions.callbackAddr,
            borrowInstructions.callbackData
        );
        return loan;
    }

    function borrowWithOnChainQuote(
        address lenderVault,
        DataTypesPeerToPeer.BorrowTransferInstructions
            calldata borrowInstructions,
        DataTypesPeerToPeer.OnChainQuote calldata onChainQuote,
        uint256 quoteTupleIdx
    ) external nonReentrant returns (DataTypesPeerToPeer.Loan memory) {
        // borrow gateway just forwards data to respective vault and orchestrates transfers
        // borrow gateway is oblivious towards and specific borrow details, and only fwds info
        // vaults needs to check details of given quote and whether it's valid
        // all lenderVaults need to approve BorrowGateway

        // 1. BorrowGateway "optimistically" pulls loanToken from lender vault: either transfers directly to (a) borrower or (b) callbacker for further processing
        // 2. BorrowGateway then pulls collToken from borrower to lender vault
        // 3. Finally, BorrowGateway updates lender vault storage state

        _checkDeadlineAndRegisteredVault(
            borrowInstructions.deadline,
            lenderVault
        );
        {
            address quoteHandler = IAddressRegistry(addressRegistry)
                .quoteHandler();
            IQuoteHandler(quoteHandler).checkAndRegisterOnChainQuote(
                msg.sender,
                lenderVault,
                quoteTupleIdx,
                onChainQuote
            );
        }
        DataTypesPeerToPeer.QuoteTuple calldata quoteTuple = onChainQuote
            .quoteTuples[quoteTupleIdx];

        (
            DataTypesPeerToPeer.Loan memory loan,
            uint256 loanId,
            uint256 upfrontFee
        ) = _processBorrowTransaction(
                borrowInstructions,
                onChainQuote.generalQuoteInfo,
                quoteTuple,
                lenderVault
            );

        emit Borrowed(
            lenderVault,
            loan.borrower,
            loan,
            upfrontFee,
            loanId,
            borrowInstructions.callbackAddr,
            borrowInstructions.callbackData
        );
        return loan;
    }

    function repay(
        DataTypesPeerToPeer.LoanRepayInstructions
            calldata loanRepayInstructions,
        address vaultAddr
    ) external nonReentrant {
        _checkDeadlineAndRegisteredVault(
            loanRepayInstructions.deadline,
            vaultAddr
        );
        if (
            loanRepayInstructions.callbackAddr != address(0) &&
            IAddressRegistry(addressRegistry).whitelistState(
                loanRepayInstructions.callbackAddr
            ) !=
            DataTypesPeerToPeer.WhitelistState.CALLBACK
        ) {
            revert Errors.NonWhitelistedCallback();
        }
        ILenderVaultImpl lenderVault = ILenderVaultImpl(vaultAddr);
        DataTypesPeerToPeer.Loan memory loan = lenderVault.loan(
            loanRepayInstructions.targetLoanId
        );
        if (msg.sender != loan.borrower) {
            revert Errors.InvalidBorrower();
        }
        if (
            block.timestamp < loan.earliestRepay ||
            block.timestamp >= loan.expiry
        ) {
            revert Errors.OutsideValidRepayWindow();
        }
        // checks repayAmount <= remaining loan balance
        if (
            loanRepayInstructions.targetRepayAmount == 0 ||
            loanRepayInstructions.targetRepayAmount + loan.amountRepaidSoFar >
            loan.initRepayAmount
        ) {
            revert Errors.InvalidRepayAmount();
        }
        bool noCompartment = loan.collTokenCompartmentAddr == address(0);
        // @dev: amountReclaimedSoFar cannot exceed initCollAmount for non-compartmentalized assets
        uint256 maxReclaimableCollAmount = noCompartment
            ? loan.initCollAmount - loan.amountReclaimedSoFar
            : IBaseCompartment(loan.collTokenCompartmentAddr)
                .getReclaimableBalance(loan.collToken);

        // @dev: amountRepaidSoFar cannot exceed initRepayAmount
        uint128 leftRepaymentAmount = loan.initRepayAmount -
            loan.amountRepaidSoFar;
        uint128 reclaimCollAmount = SafeCast.toUint128(
            (maxReclaimableCollAmount *
                uint256(loanRepayInstructions.targetRepayAmount)) /
                uint256(leftRepaymentAmount)
        );
        if (reclaimCollAmount == 0) {
            revert Errors.ReclaimAmountIsZero();
        }

        lenderVault.updateLoanInfo(
            loanRepayInstructions.targetRepayAmount,
            loanRepayInstructions.targetLoanId,
            reclaimCollAmount,
            noCompartment,
            loan.collToken
        );

        _processRepayTransfers(
            vaultAddr,
            loanRepayInstructions,
            loan,
            leftRepaymentAmount,
            reclaimCollAmount,
            noCompartment
        );

        emit Repaid(
            vaultAddr,
            loanRepayInstructions.targetLoanId,
            loanRepayInstructions.targetRepayAmount
        );
    }

    /**
     * @notice Protocol fee is allowed to be zero, so no min fee checks, only max fee checks
     */
    function setProtocolFeeParams(uint128[2] calldata _newFeeParams) external {
        if (msg.sender != IAddressRegistry(addressRegistry).owner()) {
            revert Errors.InvalidSender();
        }
        if (
            _newFeeParams[0] > Constants.MAX_SWAP_PROTOCOL_FEE ||
            _newFeeParams[1] > Constants.MAX_FEE_PER_ANNUM ||
            (_newFeeParams[0] == protocolFeeParams[0] &&
                _newFeeParams[1] == protocolFeeParams[1])
        ) {
            revert Errors.InvalidFee();
        }
        protocolFeeParams = _newFeeParams;
        emit ProtocolFeeSet(_newFeeParams);
    }

    function getProtocolFeeParams() external view returns (uint128[2] memory) {
        return protocolFeeParams;
    }

    function _processBorrowTransaction(
        DataTypesPeerToPeer.BorrowTransferInstructions
            calldata borrowInstructions,
        DataTypesPeerToPeer.GeneralQuoteInfo calldata generalQuoteInfo,
        DataTypesPeerToPeer.QuoteTuple calldata quoteTuple,
        address lenderVault
    ) internal returns (DataTypesPeerToPeer.Loan memory, uint256, uint256) {
        (
            DataTypesPeerToPeer.Loan memory loan,
            uint256 loanId,
            DataTypesPeerToPeer.TransferInstructions memory transferInstructions
        ) = ILenderVaultImpl(lenderVault).processQuote(
                msg.sender,
                borrowInstructions,
                generalQuoteInfo,
                quoteTuple
            );

        _processTransfers(
            lenderVault,
            borrowInstructions,
            loan,
            transferInstructions
        );
        return (loan, loanId, transferInstructions.upfrontFee);
    }

    // solhint-disable code-complexity
    function _processTransfers(
        address lenderVault,
        DataTypesPeerToPeer.BorrowTransferInstructions
            calldata borrowInstructions,
        DataTypesPeerToPeer.Loan memory loan,
        DataTypesPeerToPeer.TransferInstructions memory transferInstructions
    ) internal {
        if (
            borrowInstructions.callbackAddr != address(0) &&
            IAddressRegistry(addressRegistry).whitelistState(
                borrowInstructions.callbackAddr
            ) !=
            DataTypesPeerToPeer.WhitelistState.CALLBACK
        ) {
            revert Errors.NonWhitelistedCallback();
        }
        ILenderVaultImpl(lenderVault).transferTo(
            loan.loanToken,
            borrowInstructions.callbackAddr == address(0)
                ? loan.borrower
                : borrowInstructions.callbackAddr,
            loan.initLoanAmount
        );
        if (borrowInstructions.callbackAddr != address(0)) {
            IVaultCallback(borrowInstructions.callbackAddr).borrowCallback(
                loan,
                borrowInstructions.callbackData
            );
        }

        uint128[2] memory currProtocolFeeParams = protocolFeeParams;
        uint128[2] memory applicableProtocolFeeParams = currProtocolFeeParams;

        address mysoTokenManager = IAddressRegistry(addressRegistry)
            .mysoTokenManager();
        if (mysoTokenManager != address(0)) {
            applicableProtocolFeeParams = IMysoTokenManager(mysoTokenManager)
                .processP2PBorrow(
                    applicableProtocolFeeParams,
                    borrowInstructions,
                    loan,
                    lenderVault
                );
            for (uint256 i; i < 2; ) {
                if (applicableProtocolFeeParams[i] > currProtocolFeeParams[i]) {
                    revert Errors.InvalidFee();
                }
                unchecked {
                    ++i;
                }
            }
        }

        // Note: Collateral and fees flow and breakdown is as follows:
        //
        // collSendAmount ("collSendAmount")
        // |
        // |-- protocolFeeAmount ("protocolFeeAmount")
        // |
        // |-- gross pledge amount
        //     |
        //     |-- gross upfront fee
        //     |   |
        //     |   |-- net upfront fee ("upfrontFee")
        //     |   |
        //     |   |-- transfer fee 1
        //     |
        //     |-- gross reclaimable collateral
        //         |
        //         |-- net reclaimable collateral ("initCollAmount")
        //         |
        //         |-- transfer fee 2 ("expectedCompartmentTransferFee")
        //
        // where expectedProtocolAndVaultTransferFee = protocolFeeAmount + transfer fee 1

        uint256 protocolFeeAmount = _calculateProtocolFeeAmount(
            applicableProtocolFeeParams,
            borrowInstructions.collSendAmount,
            loan.initCollAmount == 0 ? 0 : loan.expiry - block.timestamp
        );

        // check protocolFeeAmount <= expectedProtocolAndVaultTransferFee
        if (
            protocolFeeAmount >
            borrowInstructions.expectedProtocolAndVaultTransferFee
        ) {
            revert Errors.InsufficientSendAmount();
        }

        if (protocolFeeAmount != 0) {
            // note: if coll token has a transfer fee, then protocolFeeAmount received by the protocol will be less than
            // protocolFeeAmount; this is by design to not tax borrowers or lenders for transfer fees on protocol fees
            IERC20Metadata(loan.collToken).safeTransferFrom(
                loan.borrower,
                IAddressRegistry(addressRegistry).owner(),
                protocolFeeAmount
            );
        }
        // determine any transfer fee for sending collateral to vault
        uint256 collTransferFeeForSendingToVault = borrowInstructions
            .expectedProtocolAndVaultTransferFee - protocolFeeAmount;
        // Note: initialize the coll amount that is sent to vault in case there's no compartment
        uint256 grossCollTransferAmountToVault = loan.initCollAmount +
            transferInstructions.upfrontFee +
            collTransferFeeForSendingToVault;
        // Note: initialize the vault's expected coll balance increase in case there's no compartment
        uint256 expVaultCollBalIncrease = loan.initCollAmount +
            transferInstructions.upfrontFee;
        if (transferInstructions.collReceiver != lenderVault) {
            // Note: if there's a compartment then adjust the coll amount that is sent to vault by deducting the amount
            // that goes to the compartment, i.e., the borrower's reclaimable coll amount and any associated transfer fees
            grossCollTransferAmountToVault -= loan.initCollAmount;
            // Note: similarly, adjust the vault's expected coll balance diff by deducting the reclaimable coll amount that
            // goes to the compartment
            expVaultCollBalIncrease -= loan.initCollAmount;

            uint256 collReceiverPreBal = IERC20Metadata(loan.collToken)
                .balanceOf(transferInstructions.collReceiver);
            IERC20Metadata(loan.collToken).safeTransferFrom(
                loan.borrower,
                transferInstructions.collReceiver,
                loan.initCollAmount +
                    borrowInstructions.expectedCompartmentTransferFee
            );
            // check that compartment balance increase matches the intended reclaimable collateral amount
            if (
                IERC20Metadata(loan.collToken).balanceOf(
                    transferInstructions.collReceiver
                ) != loan.initCollAmount + collReceiverPreBal
            ) {
                revert Errors.InvalidSendAmount();
            }
        }

        if (grossCollTransferAmountToVault > 0) {
            // @dev: grossCollTransferAmountToVault can be zero in case no upfront fee and compartment is used
            if (expVaultCollBalIncrease == 0) {
                revert Errors.InconsistentExpVaultBalIncrease();
            }
            uint256 vaultPreBal = IERC20Metadata(loan.collToken).balanceOf(
                lenderVault
            );
            IERC20Metadata(loan.collToken).safeTransferFrom(
                loan.borrower,
                lenderVault,
                grossCollTransferAmountToVault
            );
            if (
                IERC20Metadata(loan.collToken).balanceOf(lenderVault) !=
                vaultPreBal + expVaultCollBalIncrease
            ) {
                revert Errors.InvalidSendAmount();
            }
        }
    }

    function _processRepayTransfers(
        address lenderVault,
        DataTypesPeerToPeer.LoanRepayInstructions memory loanRepayInstructions,
        DataTypesPeerToPeer.Loan memory loan,
        uint128 leftRepaymentAmount,
        uint128 reclaimCollAmount,
        bool noCompartment
    ) internal {
        noCompartment
            ? ILenderVaultImpl(lenderVault).transferTo(
                loan.collToken,
                loanRepayInstructions.callbackAddr == address(0)
                    ? loan.borrower
                    : loanRepayInstructions.callbackAddr,
                reclaimCollAmount
            )
            : ILenderVaultImpl(lenderVault).transferCollFromCompartment(
                loanRepayInstructions.targetRepayAmount,
                leftRepaymentAmount,
                reclaimCollAmount,
                loan.borrower,
                loan.collToken,
                loanRepayInstructions.callbackAddr,
                loan.collTokenCompartmentAddr
            );
        if (loanRepayInstructions.callbackAddr != address(0)) {
            IVaultCallback(loanRepayInstructions.callbackAddr).repayCallback(
                loan,
                loanRepayInstructions.callbackData
            );
        }
        uint256 loanTokenReceived = IERC20Metadata(loan.loanToken).balanceOf(
            lenderVault
        );

        IERC20Metadata(loan.loanToken).safeTransferFrom(
            loan.borrower,
            lenderVault,
            loanRepayInstructions.targetRepayAmount +
                loanRepayInstructions.expectedTransferFee
        );

        loanTokenReceived =
            IERC20Metadata(loan.loanToken).balanceOf(lenderVault) -
            loanTokenReceived;
        if (loanTokenReceived != loanRepayInstructions.targetRepayAmount) {
            revert Errors.InvalidSendAmount();
        }
    }

    function _checkDeadlineAndRegisteredVault(
        uint256 deadline,
        address lenderVault
    ) internal view {
        if (block.timestamp > deadline) {
            revert Errors.DeadlinePassed();
        }
        if (!IAddressRegistry(addressRegistry).isRegisteredVault(lenderVault)) {
            revert Errors.UnregisteredVault();
        }
    }

    function _calculateProtocolFeeAmount(
        uint128[2] memory _protocolFeeParams,
        uint256 collSendAmount,
        uint256 borrowDuration
    ) internal pure returns (uint256 protocolFeeAmount) {
        bool useMaxProtocolFee = _protocolFeeParams[0] +
            ((_protocolFeeParams[1] * borrowDuration) /
                Constants.YEAR_IN_SECONDS) >
            Constants.MAX_TOTAL_PROTOCOL_FEE;
        protocolFeeAmount = useMaxProtocolFee
            ? (collSendAmount * Constants.MAX_TOTAL_PROTOCOL_FEE) /
                Constants.BASE
            : ((_protocolFeeParams[0] * collSendAmount) / Constants.BASE) +
                ((collSendAmount * _protocolFeeParams[1] * borrowDuration) /
                    (Constants.YEAR_IN_SECONDS * Constants.BASE));
    }
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.19;

library Constants {
    uint256 internal constant YEAR_IN_SECONDS = 365 days;
    uint256 internal constant BASE = 1e18;
    uint256 internal constant MAX_FEE_PER_ANNUM = 0.05e18; // 5% max in base
    uint256 internal constant MAX_SWAP_PROTOCOL_FEE = 0.01e18; // 1% max in base
    uint256 internal constant MAX_TOTAL_PROTOCOL_FEE = 0.05e18; // 5% max in base
    uint256 internal constant MAX_P2POOL_PROTOCOL_FEE = 0.05e18; // 5% max in base
    uint256 internal constant MIN_TIME_BETWEEN_EARLIEST_REPAY_AND_EXPIRY =
        1 days;
    uint256 internal constant MAX_PRICE_UPDATE_TIMESTAMP_DIVERGENCE = 1 days;
    uint256 internal constant SEQUENCER_GRACE_PERIOD = 1 hours;
    uint256 internal constant MIN_UNSUBSCRIBE_GRACE_PERIOD = 1 days;
    uint256 internal constant MAX_UNSUBSCRIBE_GRACE_PERIOD = 14 days;
    uint256 internal constant MIN_CONVERSION_GRACE_PERIOD = 1 days;
    uint256 internal constant MIN_REPAYMENT_GRACE_PERIOD = 1 days;
    uint256 internal constant LOAN_EXECUTION_GRACE_PERIOD = 1 days;
    uint256 internal constant MAX_CONVERSION_AND_REPAYMENT_GRACE_PERIOD =
        30 days;
    uint256 internal constant MIN_TIME_UNTIL_FIRST_DUE_DATE = 1 days;
    uint256 internal constant MIN_TIME_BETWEEN_DUE_DATES = 7 days;
    uint256 internal constant MIN_WAIT_UNTIL_EARLIEST_UNSUBSCRIBE = 60 seconds;
    uint256 internal constant MAX_ARRANGER_FEE = 0.5e18; // 50% max in base
    uint256 internal constant LOAN_TERMS_UPDATE_COOL_OFF_PERIOD = 15 minutes;
    uint256 internal constant MAX_REPAYMENT_SCHEDULE_LENGTH = 20;
    uint256 internal constant SINGLE_WRAPPER_MIN_MINT = 1000; // in wei
}

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

library DataTypesPeerToPeer {
    struct Loan {
        // address of borrower
        address borrower;
        // address of coll token
        address collToken;
        // address of loan token
        address loanToken;
        // timestamp after which any portion of loan unpaid defaults
        uint40 expiry;
        // timestamp before which borrower cannot repay
        uint40 earliestRepay;
        // initial collateral amount of loan
        uint128 initCollAmount;
        // loan amount given
        uint128 initLoanAmount;
        // full repay amount at start of loan
        uint128 initRepayAmount;
        // amount repaid (loan token) up until current time
        // note: partial repayments are allowed
        uint128 amountRepaidSoFar;
        // amount reclaimed (coll token) up until current time
        // note: partial repayments are allowed
        uint128 amountReclaimedSoFar;
        // flag tracking if collateral has been unlocked by vault
        bool collUnlocked;
        // address of the compartment housing the collateral
        address collTokenCompartmentAddr;
    }

    struct QuoteTuple {
        // loan amount per one unit of collateral if no oracle
        // LTV in terms of the constant BASE (10 ** 18) if using oracle
        uint256 loanPerCollUnitOrLtv;
        // interest rate percentage in BASE (can be negative but greater than -BASE)
        // i.e. -100% < interestRatePct since repay amount of 0 is not allowed
        // also interestRatePctInBase is not annualized
        int256 interestRatePctInBase;
        // fee percentage,in BASE, which will be paid in upfront in collateral
        uint256 upfrontFeePctInBase;
        // length of the loan in seconds
        uint256 tenor;
    }

    struct GeneralQuoteInfo {
        // address of collateral token
        address collToken;
        // address of loan token
        address loanToken;
        // address of oracle (optional)
        address oracleAddr;
        // min loan amount (in loan token) prevent griefing attacks or
        // amounts lender feels isn't worth unlocking on default
        uint256 minLoan;
        // max loan amount (in loan token) if lender wants a cap
        uint256 maxLoan;
        // timestamp after which quote automatically invalidates
        uint256 validUntil;
        // time, in seconds, that loan cannot be exercised
        uint256 earliestRepayTenor;
        // address of compartment implementation (optional)
        address borrowerCompartmentImplementation;
        // will invalidate quote after one use
        // if false, will be a standing quote
        bool isSingleUse;
        // whitelist address (optional)
        address whitelistAddr;
        // flag indicating whether whitelistAddr refers to a single whitelisted
        // borrower or to a whitelist authority that can whitelist multiple addresses
        bool isWhitelistAddrSingleBorrower;
    }

    struct OnChainQuote {
        // general quote info
        GeneralQuoteInfo generalQuoteInfo;
        // array of quote parameters
        QuoteTuple[] quoteTuples;
        // provides more distinguishability of quotes to reduce
        // likelihood of collisions w.r.t. quote creations and invalidations
        bytes32 salt;
    }

    struct OffChainQuote {
        // general quote info
        GeneralQuoteInfo generalQuoteInfo;
        // root of the merkle tree, where the merkle tree encodes all QuoteTuples the lender accepts
        bytes32 quoteTuplesRoot;
        // provides more distinguishability of quotes to reduce
        // likelihood of collisions w.r.t. quote creations and invalidations
        bytes32 salt;
        // for invalidating multiple parallel quotes in one click
        uint256 nonce;
        // array of compact signatures from vault signers
        bytes[] compactSigs;
    }

    struct LoanRepayInstructions {
        // loan id being repaid
        uint256 targetLoanId;
        // repay amount after transfer fees in loan token
        uint128 targetRepayAmount;
        // expected transfer fees in loan token (=0 for tokens without transfer fee)
        // note: amount that borrower sends is targetRepayAmount + expectedTransferFee
        uint128 expectedTransferFee;
        // deadline to prevent stale transactions
        uint256 deadline;
        // e.g., for using collateral to payoff debt via DEX
        address callbackAddr;
        // any data needed by callback
        bytes callbackData;
    }

    struct BorrowTransferInstructions {
        // amount of collateral sent
        uint256 collSendAmount;
        // sum of (i) protocol fee and (ii) transfer fees (if any) associated with sending any collateral to vault
        uint256 expectedProtocolAndVaultTransferFee;
        // transfer fees associated with sending any collateral to compartment (if used)
        uint256 expectedCompartmentTransferFee;
        // deadline to prevent stale transactions
        uint256 deadline;
        // slippage protection if oracle price is too loose
        uint256 minLoanAmount;
        // e.g., for one-click leverage
        address callbackAddr;
        // any data needed by callback
        bytes callbackData;
        // any data needed by myso token manager
        bytes mysoTokenManagerData;
    }

    struct TransferInstructions {
        // collateral token receiver
        address collReceiver;
        // effective upfront fee in collateral tokens (vault or compartment)
        uint256 upfrontFee;
    }

    struct WrappedERC721TokenInfo {
        // address of the ERC721_TOKEN
        address tokenAddr;
        // array of ERC721_TOKEN ids
        uint256[] tokenIds;
    }

    struct WrappedERC20TokenInfo {
        // token addresse
        address tokenAddr;
        // token amounts
        uint256 tokenAmount;
    }

    struct OnChainQuoteInfo {
        // hash of on chain quote
        bytes32 quoteHash;
        // valid until timestamp
        uint256 validUntil;
    }

    enum WhitelistState {
        // not whitelisted
        NOT_WHITELISTED,
        // can be used as loan or collateral token
        ERC20_TOKEN,
        // can be be used as oracle
        ORACLE,
        // can be used as compartment
        COMPARTMENT,
        // can be used as callback contract
        CALLBACK,
        // can be used as loan or collateral token, but if collateral then must
        // be used in conjunction with a compartment (e.g., for stETH with possible
        // negative rebase that could otherwise affect other borrowers in the vault)
        ERC20_TOKEN_REQUIRING_COMPARTMENT,
        // can be used in conjunction with an ERC721 wrapper
        ERC721_TOKEN,
        // can be used as ERC721 wrapper contract
        ERC721WRAPPER,
        // can be used as ERC20 wrapper contract
        ERC20WRAPPER,
        // can be used as MYSO token manager contract
        MYSO_TOKEN_MANAGER,
        // can be used as quote policy manager contract
        QUOTE_POLICY_MANAGER
    }
}

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

library DataTypesPeerToPool {
    struct Repayment {
        // The loan token amount due for given period; initially, expressed in relative terms (100%=BASE), once
        // finalized in absolute terms (in loanToken)
        uint128 loanTokenDue;
        // The coll token amount that can be converted for given period; initially, expressed in relative terms w.r.t.
        // loanTokenDue (e.g., convert every 1 loanToken for 8 collToken), once finalized in absolute terms (in collToken)
        uint128 collTokenDueIfConverted;
        // Timestamp when repayment is due
        uint40 dueTimestamp;
    }

    struct LoanTerms {
        // Min subscription amount (in loan token) that the borrower deems acceptable
        uint128 minTotalSubscriptions;
        // Max subscription amount (in loan token) that the borrower deems acceptable
        uint128 maxTotalSubscriptions;
        // The number of collateral tokens the borrower pledges per loan token borrowed as collateral for default case
        uint128 collPerLoanToken;
        // Borrower who can finalize given loan proposal
        address borrower;
        // Array of scheduled repayments
        Repayment[] repaymentSchedule;
    }

    struct StaticLoanProposalData {
        // Factory address from which the loan proposal is created
        address factory;
        // Funding pool address that is associated with given loan proposal and from which loan liquidity can be
        // sourced
        address fundingPool;
        // Address of collateral token to be used for given loan proposal
        address collToken;
        // Address of arranger who can manage the loan proposal contract
        address arranger;
        // Address of whitelist authority who can manage the lender whitelist (optional)
        address whitelistAuthority;
        // Unsubscribe grace period (in seconds), i.e., after acceptance by borrower lenders can unsubscribe and
        // remove liquidity for this duration before being locked-in
        uint256 unsubscribeGracePeriod;
        // Conversion grace period (in seconds), i.e., lenders can exercise their conversion right between
        // [dueTimeStamp, dueTimeStamp+conversionGracePeriod]
        uint256 conversionGracePeriod;
        // Repayment grace period (in seconds), i.e., borrowers can repay between
        // [dueTimeStamp+conversionGracePeriod, dueTimeStamp+conversionGracePeriod+repaymentGracePeriod]
        uint256 repaymentGracePeriod;
    }

    struct DynamicLoanProposalData {
        // Arranger fee charged on final loan amount, initially in relative terms (100%=BASE), and after finalization
        // in absolute terms (in loan token)
        uint256 arrangerFee;
        // The gross loan amount; initially this is zero and gets set once loan proposal gets accepted and finalized;
        // note that the borrower receives the gross loan amount minus any arranger and protocol fees
        uint256 grossLoanAmount;
        // Final collateral amount reserved for defaults; initially this is zero and gets set once loan proposal got
        // accepted and finalized
        uint256 finalCollAmountReservedForDefault;
        // Final collateral amount reserved for conversions; initially this is zero and gets set once loan proposal got
        // accepted and finalized
        uint256 finalCollAmountReservedForConversions;
        // Timestamp when the loan terms get accepted by borrower and after which they cannot be changed anymore
        uint256 loanTermsLockedTime;
        // Current repayment index, mapping to currently relevant repayment schedule element; note the
        // currentRepaymentIdx (initially 0) only ever gets incremented on repay
        uint256 currentRepaymentIdx;
        // Status of current loan proposal
        DataTypesPeerToPool.LoanStatus status;
        // Protocol fee, initially in relative terms (100%=BASE), and after finalization in absolute terms (in loan token);
        // note that the relative protocol fee is locked in at the time when the loan proposal is created
        uint256 protocolFee;
    }

    enum LoanStatus {
        WITHOUT_LOAN_TERMS,
        IN_NEGOTIATION,
        LOAN_TERMS_LOCKED,
        READY_TO_EXECUTE,
        ROLLBACK,
        LOAN_DEPLOYED,
        DEFAULTED
    }
}

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

library Errors {
    error UnregisteredVault();
    error InvalidDelegatee();
    error InvalidSender();
    error InvalidFee();
    error InsufficientSendAmount();
    error NoOracle();
    error InvalidOracleAnswer();
    error InvalidOracleDecimals();
    error InvalidOracleVersion();
    error InvalidAddress();
    error InvalidArrayLength();
    error InvalidQuote();
    error OutdatedQuote();
    error InvalidOffChainSignature();
    error InvalidOffChainMerkleProof();
    error InvalidCollUnlock();
    error InvalidAmount();
    error UnknownOnChainQuote();
    error NeitherTokenIsGOHM();
    error NoLpTokens();
    error ZeroReserve();
    error IncorrectGaugeForLpToken();
    error InvalidGaugeIndex();
    error AlreadyStaked();
    error InvalidWithdrawAmount();
    error InvalidBorrower();
    error OutsideValidRepayWindow();
    error InvalidRepayAmount();
    error ReclaimAmountIsZero();
    error UnregisteredGateway();
    error NonWhitelistedOracle();
    error NonWhitelistedCompartment();
    error NonWhitelistedCallback();
    error NonWhitelistedToken();
    error LtvHigherThanMax();
    error InsufficientVaultFunds();
    error InvalidInterestRateFactor();
    error InconsistentUnlockTokenAddresses();
    error InvalidEarliestRepay();
    error InvalidNewMinNumOfSigners();
    error AlreadySigner();
    error InvalidArrayIndex();
    error InvalidSignerRemoveInfo();
    error InvalidSendAmount();
    error TooSmallLoanAmount();
    error DeadlinePassed();
    error WithdrawEntered();
    error DuplicateAddresses();
    error OnChainQuoteAlreadyAdded();
    error OffChainQuoteHasBeenInvalidated();
    error Uninitialized();
    error InvalidRepaymentScheduleLength();
    error FirstDueDateTooCloseOrPassed();
    error InvalidGracePeriod();
    error UnregisteredLoanProposal();
    error NotInSubscriptionPhase();
    error NotInUnsubscriptionPhase();
    error InsufficientBalance();
    error InsufficientFreeSubscriptionSpace();
    error BeforeEarliestUnsubscribe();
    error InconsistentLastLoanTermsUpdateTime();
    error InvalidActionForCurrentStatus();
    error FellShortOfTotalSubscriptionTarget();
    error InvalidRollBackRequest();
    error UnsubscriptionAmountTooLarge();
    error InvalidSubscriptionRange();
    error InvalidMaxTotalSubscriptions();
    error OutsideConversionTimeWindow();
    error OutsideRepaymentTimeWindow();
    error NoDefault();
    error LoanIsFullyRepaid();
    error RepaymentIdxTooLarge();
    error AlreadyClaimed();
    error AlreadyConverted();
    error InvalidDueDates();
    error LoanTokenDueIsZero();
    error WaitForLoanTermsCoolOffPeriod();
    error ZeroConversionAmount();
    error InvalidNewOwnerProposal();
    error CollateralMustBeCompartmentalized();
    error InvalidCompartmentForToken();
    error InvalidSignature();
    error InvalidUpdate();
    error CannotClaimOutdatedStatus();
    error DelegateReducedBalance();
    error FundingPoolAlreadyExists();
    error InvalidLender();
    error NonIncreasingTokenAddrs();
    error NonIncreasingNonFungibleTokenIds();
    error TransferToWrappedTokenFailed();
    error TransferFromWrappedTokenFailed();
    error StateAlreadySet();
    error ReclaimableCollateralAmountZero();
    error InvalidSwap();
    error InvalidUpfrontFee();
    error InvalidOracleTolerance();
    error ReserveRatiosSkewedFromOraclePrice();
    error SequencerDown();
    error GracePeriodNotOver();
    error LoanExpired();
    error NoDsEth();
    error TooShortTwapInterval();
    error TooLongTwapInterval();
    error TwapExceedsThreshold();
    error Reentrancy();
    error TokenNotStuck();
    error InconsistentExpTransferFee();
    error InconsistentExpVaultBalIncrease();
    error DepositLockActive();
    error DisallowedSubscriptionLockup();
    error IncorrectLoanAmount();
    error Disabled();
    error CannotRemintUnlessZeroSupply();
    error TokensStillMissingFromWrapper();
    error OnlyMintFromSingleTokenWrapper();
    error NonMintableTokenState();
    error NoTokensTransferred();
    error TokenAlreadyCountedInWrapper();
    error TokenNotOwnedByWrapper();
    error TokenDoesNotBelongInWrapper(address tokenAddr, uint256 tokenId);
    error InvalidMintAmount();
    error QuoteViolatesPolicy();
    error AlreadyPublished();
    error PolicyAlreadySet();
    error NoPolicyToDelete();
    error InvalidTenorBounds();
    error InvalidLtvBounds();
    error InvalidLoanPerCollBounds();
    error InvalidMinApr();
    error NoPolicy();
    error InvalidMinFee();
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

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

interface IAddressRegistry {
    event WhitelistStateUpdated(
        address[] indexed whitelistAddrs,
        DataTypesPeerToPeer.WhitelistState indexed whitelistState
    );
    event AllowedTokensForCompartmentUpdated(
        address indexed compartmentImpl,
        address[] tokens,
        bool isWhitelisted
    );
    event BorrowerWhitelistStatusClaimed(
        address indexed whitelistAuthority,
        address indexed borrower,
        uint256 whitelistedUntil
    );
    event BorrowerWhitelistUpdated(
        address indexed whitelistAuthority,
        address[] borrowers,
        uint256 whitelistedUntil
    );
    event CreatedWrappedTokenForERC721s(
        DataTypesPeerToPeer.WrappedERC721TokenInfo[] wrappedTokensInfo,
        string name,
        string symbol,
        address newErc20Addr
    );
    event CreatedWrappedTokenForERC20s(
        DataTypesPeerToPeer.WrappedERC20TokenInfo[] wrappedTokensInfo,
        string name,
        string symbol,
        address newERC20Addr
    );

    /**
     * @notice initializes factory, gateway, and quote handler contracts
     * @param _lenderVaultFactory address of the factory for lender vaults
     * @param _borrowerGateway address of the gateway with which borrowers interact
     * @param _quoteHandler address of contract which handles quote logic
     */
    function initialize(
        address _lenderVaultFactory,
        address _borrowerGateway,
        address _quoteHandler
    ) external;

    /**
     * @notice adds new lender vault to registry
     * @dev can only be called lender vault factory
     * @param addr address of new lender vault
     * @return numRegisteredVaults number of registered vaults
     */
    function addLenderVault(
        address addr
    ) external returns (uint256 numRegisteredVaults);

    /**
     * @notice Allows user to claim whitelisted status
     * @param whitelistAuthority Address of whitelist authorithy
     * @param whitelistedUntil Timestamp until when user is whitelisted
     * @param compactSig Compact signature from whitelist authority
     * @param salt Salt to make signature unique
     */
    function claimBorrowerWhitelistStatus(
        address whitelistAuthority,
        uint256 whitelistedUntil,
        bytes calldata compactSig,
        bytes32 salt
    ) external;

    /**
     * @notice Allows user to wrap (multiple) ERC721 into one ERC20
     * @param tokensToBeWrapped Array of WrappedERC721TokenInfo
     * @param name Name of the new wrapper token
     * @param symbol Symbol of the new wrapper token
     * @param mysoTokenManagerData Data to be passed to MysoTokenManager
     */
    function createWrappedTokenForERC721s(
        DataTypesPeerToPeer.WrappedERC721TokenInfo[] calldata tokensToBeWrapped,
        string calldata name,
        string calldata symbol,
        bytes calldata mysoTokenManagerData
    ) external;

    /**
     * @notice Allows user to wrap multiple ERC20 into one ERC20
     * @param tokensToBeWrapped Array of WrappedERC20TokenInfo
     * @param name Name of the new wrapper token
     * @param symbol Symbol of the new wrapper token
     * @param mysoTokenManagerData Data to be passed to MysoTokenManager
     */
    function createWrappedTokenForERC20s(
        DataTypesPeerToPeer.WrappedERC20TokenInfo[] calldata tokensToBeWrapped,
        string calldata name,
        string calldata symbol,
        bytes calldata mysoTokenManagerData
    ) external;

    /**
     * @notice Allows a whitelist authority to set the whitelistedUntil state for a given borrower
     * @dev Anyone can create their own whitelist, and lenders can decide if and which whitelist they want to use
     * @param borrowers Array of borrower addresses
     * @param whitelistedUntil Timestamp until which borrowers shall be whitelisted under given whitelist authority
     */
    function updateBorrowerWhitelist(
        address[] calldata borrowers,
        uint256 whitelistedUntil
    ) external;

    /**
     * @notice Sets the whitelist state for a given address
     * @dev Can only be called by registry owner
     * @param addrs Addresses for which whitelist state shall be set
     * @param whitelistState The whitelist state to which addresses shall be set
     */
    function setWhitelistState(
        address[] calldata addrs,
        DataTypesPeerToPeer.WhitelistState whitelistState
    ) external;

    /**
     * @notice Sets the allowed tokens for a given compartment implementation
     * @dev Can only be called by registry owner
     * @param compartmentImpl Compartment implementations for which allowed tokens shall be set
     * @param tokens List of tokens that shall be allowed for given compartment implementation
     * @param allowTokensForCompartment Boolean flag indicating whether tokens shall be allowed for compartment 
     implementation
     */
    function setAllowedTokensForCompartment(
        address compartmentImpl,
        address[] calldata tokens,
        bool allowTokensForCompartment
    ) external;

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     * @param newOwner the proposed new owner address
     */
    function transferOwnership(address newOwner) external;

    /**
     * @notice Returns boolean flag indicating whether the borrower has been whitelisted by whitelistAuthority
     * @param whitelistAuthority Addresses of the whitelist authority
     * @param borrower Addresses of the borrower
     * @return Boolean flag indicating whether the borrower has been whitelisted by whitelistAuthority
     */
    function isWhitelistedBorrower(
        address whitelistAuthority,
        address borrower
    ) external view returns (bool);

    /**
     * @notice Returns boolean flag indicating whether token is whitelisted
     * @param token Addresses of the given token to check
     * @return Boolean flag indicating whether the token is whitelisted
     */
    function isWhitelistedERC20(address token) external view returns (bool);

    /**
     * @notice Returns the address of the vault factory
     * @return Address of the vault factory contract
     */
    function lenderVaultFactory() external view returns (address);

    /**
     * @notice Returns the address of the borrower gateway
     * @return Address of the borrower gateway contract
     */
    function borrowerGateway() external view returns (address);

    /**
     * @notice Returns the address of the quote handler
     * @return Address of the quote handler contract
     */
    function quoteHandler() external view returns (address);

    /**
     * @notice Returns the address of the MYSO token manager
     * @return Address of the MYSO token manager contract
     */
    function mysoTokenManager() external view returns (address);

    /**
     * @notice Returns boolean flag indicating whether given address is a registered vault
     * @param addr Address to check if it is a registered vault
     * @return Boolean flag indicating whether given address is a registered vault
     */
    function isRegisteredVault(address addr) external view returns (bool);

    /**
     * @notice Returns whitelist state for given address
     * @param addr Address to check whitelist state for
     * @return whitelistState Whitelist state for given address
     */
    function whitelistState(
        address addr
    ) external view returns (DataTypesPeerToPeer.WhitelistState whitelistState);

    /**
     * @notice Returns an array of registered vault addresses
     * @return vaultAddrs The array of registered vault addresses
     */
    function registeredVaults()
        external
        view
        returns (address[] memory vaultAddrs);

    /**
     * @notice Returns address of the owner
     * @return Address of the owner
     */
    function owner() external view returns (address);

    /**
     * @notice Returns address of the pending owner
     * @return Address of the pending owner
     */
    function pendingOwner() external view returns (address);

    /**
     * @notice Returns boolean flag indicating whether given compartment implementation and token combination is whitelisted
     * @param compartmentImpl Address of compartment implementation to check if it is allowed for token
     * @param token Address of token to check if compartment implementation is allowed
     * @return isWhitelisted Boolean flag indicating whether compartment implementation is whitelisted for given token
     */
    function isWhitelistedCompartment(
        address compartmentImpl,
        address token
    ) external view returns (bool isWhitelisted);

    /**
     * @notice Returns current number of vaults registered
     * @return numVaults Current number of vaults registered
     */
    function numRegisteredVaults() external view returns (uint256 numVaults);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.19;

interface IBaseCompartment {
    event Staked(uint256 gaugeIndex, address liqGaugeAddr, uint256 amount);

    event Delegated(address delegator, address delegatee);

    event UpdatedApprovedStaker(address staker, bool approvalState);

    event UpdatedApprovedDelegator(address delegator, bool approvalState);

    /**
     * @notice function to initialize collateral compartment
     * @dev factory creates clone and then initializes implementation contract
     * @param vaultAddr address of vault
     * @param loanId index of the loan
     */
    function initialize(address vaultAddr, uint256 loanId) external;

    /**
     * @notice function to transfer some amount of collateral to borrower on repay
     * @dev this function can only be called by vault and tranfers proportional amount
     * of compartment collTokenBalance to borrower address. This needs use a proportion
     * and not the amount to account for possible changes due to rewards accruing
     * @param repayAmount amount of loan token to be repaid
     * @param repayAmountLeft amount of loan token still outstanding
     * @param reclaimCollAmount amount of collateral token to be reclaimed
     * @param borrowerAddr address of borrower receiving transfer
     * @param collTokenAddr address of collateral token being transferred
     * @param callbackAddr address to send collateral to instead of borrower if using callback
     */
    function transferCollFromCompartment(
        uint256 repayAmount,
        uint256 repayAmountLeft,
        uint128 reclaimCollAmount,
        address borrowerAddr,
        address collTokenAddr,
        address callbackAddr
    ) external;

    /**
     * @notice function to unlock all collateral left in compartment
     * @dev this function can only be called by vault and returns all collateral to vault
     * @param collTokenAddr pass in collToken addr to avoid callback reads gas cost
     */
    function unlockCollToVault(address collTokenAddr) external;

    /**
     * @notice function returns the potentially reclaimable collateral token balance
     * @param collTokenAddr address of collateral token for which reclaimable balance is being retrieved
     * @dev depending on compartment implementation this could be simple balanceOf or eg staked balance call
     */
    function getReclaimableBalance(
        address collTokenAddr
    ) external view returns (uint256 reclaimableBalance);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

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

interface IBorrowerGateway {
    event Borrowed(
        address indexed vaultAddr,
        address indexed borrower,
        DataTypesPeerToPeer.Loan loan,
        uint256 upfrontFee,
        uint256 indexed loanId,
        address callbackAddr,
        bytes callbackData
    );

    event Repaid(
        address indexed vaultAddr,
        uint256 indexed loanId,
        uint256 repayAmount
    );

    event ProtocolFeeSet(uint128[2] newFeeParams);

    /**
     * @notice function which allows a borrower to use an offChain quote to borrow
     * @param lenderVault address of the vault whose owner(s) signed the offChain quote
     * @param borrowInstructions data needed for borrow (see DataTypesPeerToPeer comments)
     * @param offChainQuote quote data (see DataTypesPeerToPeer comments)
     * @param quoteTuple quote data (see DataTypesPeerToPeer comments)
     * @param proof array of bytes needed for merkle tree verification of quote
     * @return loan data
     */
    function borrowWithOffChainQuote(
        address lenderVault,
        DataTypesPeerToPeer.BorrowTransferInstructions
            calldata borrowInstructions,
        DataTypesPeerToPeer.OffChainQuote calldata offChainQuote,
        DataTypesPeerToPeer.QuoteTuple calldata quoteTuple,
        bytes32[] memory proof
    ) external returns (DataTypesPeerToPeer.Loan memory);

    /**
     * @notice function which allows a borrower to use an onChain quote to borrow
     * @param lenderVault address of the vault whose owner(s) enacted onChain quote
     * @param borrowInstructions data needed for borrow (see DataTypesPeerToPeer comments)
     * @param onChainQuote quote data (see DataTypesPeerToPeer comments)
     * @param quoteTupleIdx index of quote tuple array
     * @return loan data
     */
    function borrowWithOnChainQuote(
        address lenderVault,
        DataTypesPeerToPeer.BorrowTransferInstructions
            calldata borrowInstructions,
        DataTypesPeerToPeer.OnChainQuote calldata onChainQuote,
        uint256 quoteTupleIdx
    ) external returns (DataTypesPeerToPeer.Loan memory);

    /**
     * @notice function which allows a borrower to repay a loan
     * @param loanRepayInstructions data needed for loan repay (see DataTypesPeerToPeer comments)
     * @param vaultAddr address of the vault in which loan was taken out
     */
    function repay(
        DataTypesPeerToPeer.LoanRepayInstructions
            calldata loanRepayInstructions,
        address vaultAddr
    ) external;

    /**
     * @notice function which allows owner to set new protocol fee params
     * @dev protocolFee params are in units of BASE constant (10**18) and variable portion is annualized
     * @param _newFeeParams new base fee (constant) and fee slope (variable) in BASE
     */
    function setProtocolFeeParams(uint128[2] calldata _newFeeParams) external;

    /**
     * @notice function returns address registry
     * @return address of registry
     */
    function addressRegistry() external view returns (address);

    /**
     * @notice function returns protocol fee
     * @return protocolFeeParams protocol fee Params in Base
     */
    function getProtocolFeeParams()
        external
        view
        returns (uint128[2] memory protocolFeeParams);
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

import "../IERC20.sol";

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

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

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.19;

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

interface ILenderVaultImpl {
    event AddedSigners(address[] _signers);

    event MinNumberOfSignersSet(uint256 minNumSigners);

    event RemovedSigner(
        address signerRemoved,
        uint256 signerIdx,
        address signerMovedFromEnd
    );

    event CollateralUnlocked(
        address indexed vaultOwner,
        address indexed collToken,
        uint256[] loanIds,
        uint256 amountUnlocked
    );

    event QuoteProcessed(
        uint256 netPledgeAmount,
        DataTypesPeerToPeer.TransferInstructions transferInstructions
    );

    event Withdrew(address indexed tokenAddr, uint256 withdrawAmount);

    event CircuitBreakerUpdated(
        address indexed newCircuitBreaker,
        address indexed oldCircuitBreaker
    );

    event ReverseCircuitBreakerUpdated(
        address indexed newReverseCircuitBreaker,
        address indexed oldReverseCircuitBreaker
    );

    event OnChainQuotingDelegateUpdated(
        address indexed newOnChainQuotingDelegate,
        address indexed oldOnChainQuotingDelegate
    );

    /**
     * @notice function to initialize lender vault
     * @dev factory creates clone and then initializes the vault
     * @param vaultOwner address of vault owner
     * @param addressRegistry registry address
     */
    function initialize(address vaultOwner, address addressRegistry) external;

    /**
     * @notice function to unlock defaulted collateral
     * @dev only loans with same collateral token can be unlocked in one call
     * function will revert if mismatch in coll token to a loan.collToken.
     * @param collToken address of the collateral token
     * @param _loanIds array of indices of the loans to unlock
     */
    function unlockCollateral(
        address collToken,
        uint256[] calldata _loanIds
    ) external;

    /**
     * @notice function to update loan info on a reoay
     * @dev only borrower gateway can call this function
     * loanId is needed by vault to store updated loan info
     * @param repayAmount amount of loan repaid
     * @param loanId index of loan in loans array
     * @param collAmount amount of collateral to unlock
     * @param noCompartment boolean flag indicating whether loan has no compartment
     * @param collToken address of the collateral token
     */
    function updateLoanInfo(
        uint128 repayAmount,
        uint256 loanId,
        uint128 collAmount,
        bool noCompartment,
        address collToken
    ) external;

    /**
     * @notice function to processQuote on a borrow
     * @dev only borrower gateway can call this function
     * @param borrower address of the borrower
     * @param borrowInstructions struct containing all info for borrow (see DataTypesPeerToPeer.sol notes)
     * @param generalQuoteInfo struct containing quote info (see Datatypes.sol notes)
     * @param quoteTuple struct containing specific quote tuple info (see DataTypesPeerToPeer.sol notes)
     * @return loan loan information after processing the quote
     * @return loanId index of loans in the loans array
     * @return transferInstructions struct containing transfer instruction info (see DataTypesPeerToPeer.sol notes)
     */
    function processQuote(
        address borrower,
        DataTypesPeerToPeer.BorrowTransferInstructions
            calldata borrowInstructions,
        DataTypesPeerToPeer.GeneralQuoteInfo calldata generalQuoteInfo,
        DataTypesPeerToPeer.QuoteTuple calldata quoteTuple
    )
        external
        returns (
            DataTypesPeerToPeer.Loan calldata loan,
            uint256 loanId,
            DataTypesPeerToPeer.TransferInstructions memory transferInstructions
        );

    /**
     * @notice function to withdraw a token from a vault
     * @dev only vault owner can withdraw
     * @param token address of the token to withdraw
     * @param amount amount of token to withdraw
     */
    function withdraw(address token, uint256 amount) external;

    /**
     * @notice function to transfer token from vault
     * @dev only borrow gateway can call this function
     * @param token address of the token to transfer
     * @param recipient address which receives the tokens
     * @param amount amount of token to transfer
     */
    function transferTo(
        address token,
        address recipient,
        uint256 amount
    ) external;

    /**
     * @notice function to transfer token from a compartment
     * @dev only borrow gateway can call this function, if callbackAddr, then
     * the collateral will be transferred to the callback address
     * @param repayAmount amount of loan token to be repaid
     * @param repayAmountLeft amount of loan token still outstanding
     * @param reclaimCollAmount amount of collateral to be reclaimed
     * @param borrowerAddr address of the borrower
     * @param collTokenAddr address of the coll token to transfer to compartment
     * @param callbackAddr address of callback
     * @param collTokenCompartmentAddr address of the coll token compartment
     */
    function transferCollFromCompartment(
        uint256 repayAmount,
        uint256 repayAmountLeft,
        uint128 reclaimCollAmount,
        address borrowerAddr,
        address collTokenAddr,
        address callbackAddr,
        address collTokenCompartmentAddr
    ) external;

    /**
     * @notice function to set minimum number of signers required for an offchain quote
     * @dev this function allows a multi-sig quorum to sign a quote offchain
     * @param _minNumOfSigners minimum number of signatures borrower needs to provide
     */
    function setMinNumOfSigners(uint256 _minNumOfSigners) external;

    /**
     * @notice function to add a signer
     * @dev this function only can be called by vault owner
     * @param _signers array of signers to add
     */
    function addSigners(address[] calldata _signers) external;

    /**
     * @notice function to remove a signer
     * @dev this function only can be called by vault owner
     * @param signer address of signer to be removed
     * @param signerIdx index of the signers array at which signer resides
     */
    function removeSigner(address signer, uint256 signerIdx) external;

    /**
     * @notice function to set a circuit breaker
     * @dev the circuit breaker (and vault owner) can pause all loan offers;
     * note: circuit breaker and reverse circuit breaker can be the same account
     * @param circuitBreaker address of the circuit breaker
     */
    function setCircuitBreaker(address circuitBreaker) external;

    /**
     * @notice function to set a reverse circuit breaker
     * @dev the reverse circuit breaker (and vault owner) can unpause all loan offers;
     * note: circuit breaker and reverse circuit breaker can be the same account
     * @param reverseCircuitBreaker address of the reverse circuit breaker
     */
    function setReverseCircuitBreaker(address reverseCircuitBreaker) external;

    /**
     * @notice function to set a delegate for on chain quoting
     * @dev the quote handler (and vault owner) can add, delete and update on chain quotes
     * @param onChainQuotingDelegate address of the delegate
     */
    function setOnChainQuotingDelegate(address onChainQuotingDelegate) external;

    /**
     * @notice function to pause all quotes from lendervault
     * @dev only vault owner and circuit breaker can pause quotes
     */
    function pauseQuotes() external;

    /**
     * @notice function to unpause all quotes from lendervault
     * @dev only vault owner and reverse circuit breaker can unpause quotes again
     */
    function unpauseQuotes() external;

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     * @param newOwner the proposed new owner address
     */
    function transferOwnership(address newOwner) external;

    /**
     * @notice function to retrieve loan from loans array in vault
     * @dev this function reverts on invalid index
     * @param index index of loan
     * @return loan loan stored at that index in vault
     */
    function loan(
        uint256 index
    ) external view returns (DataTypesPeerToPeer.Loan memory loan);

    /**
     * @notice function to return owner address
     * @return owner address
     */
    function owner() external view returns (address);

    /**
     * @notice Returns address of the pending owner
     * @return Address of the pending owner
     */
    function pendingOwner() external view returns (address);

    /**
     * @notice function to return the total number of signers
     * @return number of signers
     */
    function totalNumSigners() external view returns (uint256);

    /**
     * @notice function to return unlocked token balances
     * @param tokens array of token addresses
     * @return balances the vault balances of the token addresses
     * @return _lockedAmounts the vault locked amounts of the token addresses
     */
    function getTokenBalancesAndLockedAmounts(
        address[] calldata tokens
    )
        external
        view
        returns (uint256[] memory balances, uint256[] memory _lockedAmounts);

    /**
     * @notice function to return address of registry
     * @return registry address
     */
    function addressRegistry() external view returns (address);

    /**
     * @notice function to return address of the circuit breaker
     * @return circuit breaker address
     */
    function circuitBreaker() external view returns (address);

    /**
     * @notice function to return address of the reverse circuit breaker
     * @return reverse circuit breaker address
     */
    function reverseCircuitBreaker() external view returns (address);

    /**
     * @notice function to return address of the delegate for on chain quoting
     * @return approved delegate address
     */
    function onChainQuotingDelegate() external view returns (address);

    /**
     * @notice function returns signer at given index
     * @param index of the signers array
     * @return signer address
     */
    function signers(uint256 index) external view returns (address);

    /**
     * @notice function returns minimum number of signers
     * @return minimum number of signers
     */
    function minNumOfSigners() external view returns (uint256);

    /**
     * @notice function returns if address is a signer
     * @return true, if a signer, else false
     */
    function isSigner(address signer) external view returns (bool);

    /**
     * @notice function returns if withdraw mutex is activated
     * @return true, if withdraw already called, else false
     */
    function withdrawEntered() external view returns (bool);

    /**
     * @notice function returns current locked amounts of given token
     * @param token address of the token
     * @return amount of token locked
     */
    function lockedAmounts(address token) external view returns (uint256);

    /**
     * @notice function returns total number of loans
     * @return total number of loans
     */
    function totalNumLoans() external view returns (uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

import {DataTypesPeerToPeer} from "../peer-to-peer/DataTypesPeerToPeer.sol";
import {DataTypesPeerToPool} from "../peer-to-pool/DataTypesPeerToPool.sol";

interface IMysoTokenManager {
    function processP2PBorrow(
        uint128[2] memory currProtocolFeeParams,
        DataTypesPeerToPeer.BorrowTransferInstructions
            calldata borrowInstructions,
        DataTypesPeerToPeer.Loan calldata loan,
        address lenderVault
    ) external returns (uint128[2] memory applicableProtocolFeeParams);

    function processP2PCreateVault(
        uint256 numRegisteredVaults,
        address vaultCreator,
        address newLenderVaultAddr
    ) external;

    function processP2PCreateWrappedTokenForERC721s(
        address tokenCreator,
        DataTypesPeerToPeer.WrappedERC721TokenInfo[] calldata tokensToBeWrapped,
        bytes calldata mysoTokenManagerData
    ) external;

    function processP2PCreateWrappedTokenForERC20s(
        address tokenCreator,
        DataTypesPeerToPeer.WrappedERC20TokenInfo[] calldata tokensToBeWrapped,
        bytes calldata mysoTokenManagerData
    ) external;

    function processP2PoolDeposit(
        address fundingPool,
        address depositor,
        uint256 depositAmount,
        uint256 depositLockupDuration,
        uint256 transferFee
    ) external;

    function processP2PoolSubscribe(
        address fundingPool,
        address subscriber,
        address loanProposal,
        uint256 subscriptionAmount,
        uint256 subscriptionLockupDuration,
        uint256 totalSubscriptions,
        DataTypesPeerToPool.LoanTerms calldata loanTerms
    ) external;

    function processP2PoolLoanFinalization(
        address loanProposal,
        address fundingPool,
        address arranger,
        address borrower,
        uint256 grossLoanAmount,
        bytes calldata mysoTokenManagerData
    ) external;

    function processP2PoolCreateLoanProposal(
        address fundingPool,
        address proposalCreator,
        address collToken,
        uint256 arrangerFee,
        uint256 numLoanProposals
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.19;

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

interface IQuoteHandler {
    event OnChainQuoteAdded(
        address indexed lenderVault,
        DataTypesPeerToPeer.OnChainQuote onChainQuote,
        bytes32 indexed onChainQuoteHash
    );

    event OnChainQuoteDeleted(
        address indexed lenderVault,
        bytes32 indexed onChainQuoteHash
    );

    event OnChainQuoteInvalidated(
        address indexed lenderVault,
        bytes32 indexed onChainQuoteHash
    );
    event OffChainQuoteNonceIncremented(
        address indexed lenderVault,
        uint256 newNonce
    );
    event OffChainQuoteInvalidated(
        address indexed lenderVault,
        bytes32 indexed offChainQuoteHash
    );
    event OnChainQuoteUsed(
        address indexed lenderVault,
        bytes32 indexed onChainQuoteHash,
        uint256 indexed toBeRegisteredLoanId,
        uint256 quoteTupleIdx
    );
    event OffChainQuoteUsed(
        address indexed lenderVault,
        bytes32 indexed offChainQuoteHash,
        uint256 indexed toBeRegisteredLoanId,
        DataTypesPeerToPeer.QuoteTuple quoteTuple
    );
    event QuotePolicyManagerUpdated(
        address indexed lenderVault,
        address indexed newPolicyManagerAddress
    );
    event OnChainQuotePublished(
        DataTypesPeerToPeer.OnChainQuote onChainQuote,
        bytes32 indexed onChainQuoteHash,
        address indexed proposer
    );
    event OnChainQuoteCopied(
        address indexed lenderVault,
        bytes32 indexed onChainQuoteHash
    );

    /**
     * @notice function adds on chain quote
     * @dev function can only be called by vault owner or on chain quote delegate
     * @param lenderVault address of the vault adding quote
     * @param onChainQuote data for the onChain quote (See notes in DataTypesPeerToPeer.sol)
     */
    function addOnChainQuote(
        address lenderVault,
        DataTypesPeerToPeer.OnChainQuote calldata onChainQuote
    ) external;

    /**
     * @notice function updates on chain quote
     * @dev function can only be called by vault owner or on chain quote delegate
     * @param lenderVault address of the vault updating quote
     * @param oldOnChainQuoteHash quote hash for the old onChain quote marked for deletion
     * @param newOnChainQuote data for the new onChain quote (See notes in DataTypesPeerToPeer.sol)
     */
    function updateOnChainQuote(
        address lenderVault,
        bytes32 oldOnChainQuoteHash,
        DataTypesPeerToPeer.OnChainQuote calldata newOnChainQuote
    ) external;

    /**
     * @notice function deletes on chain quote
     * @dev function can only be called by vault owner or on chain quote delegate
     * @param lenderVault address of the vault deleting
     * @param onChainQuoteHash quote hash for the onChain quote marked for deletion
     */
    function deleteOnChainQuote(
        address lenderVault,
        bytes32 onChainQuoteHash
    ) external;

    /**
     * @notice function to copy a published on chain quote
     * @dev function can only be called by vault owner or on chain quote delegate
     * @param lenderVault address of the vault approving
     * @param onChainQuoteHash quote hash of a published onChain quote
     */
    function copyPublishedOnChainQuote(
        address lenderVault,
        bytes32 onChainQuoteHash
    ) external;

    /**
     * @notice function to publish an on chain quote
     * @dev function can be called by anyone and used by any vault
     * @param onChainQuote data for the onChain quote (See notes in DataTypesPeerToPeer.sol)
     */
    function publishOnChainQuote(
        DataTypesPeerToPeer.OnChainQuote calldata onChainQuote
    ) external;

    /**
     * @notice function increments the nonce for a vault
     * @dev function can only be called by vault owner
     * incrementing the nonce can bulk invalidate any
     * off chain quotes with that nonce in one txn
     * @param lenderVault address of the vault
     */
    function incrementOffChainQuoteNonce(address lenderVault) external;

    /**
     * @notice function invalidates off chain quote
     * @dev function can only be called by vault owner
     * this function invalidates one specific quote
     * @param lenderVault address of the vault
     * @param offChainQuoteHash hash of the off chain quote to be invalidated
     */
    function invalidateOffChainQuote(
        address lenderVault,
        bytes32 offChainQuoteHash
    ) external;

    /**
     * @notice function performs checks on quote and, if valid, updates quotehandler's state
     * @dev function can only be called by borrowerGateway
     * @param borrower address of borrower
     * @param lenderVault address of the vault
     * @param quoteTupleIdx index of the quote tuple in the vault's quote array
     * @param onChainQuote data for the onChain quote (See notes in DataTypesPeerToPeer.sol)
     */
    function checkAndRegisterOnChainQuote(
        address borrower,
        address lenderVault,
        uint256 quoteTupleIdx,
        DataTypesPeerToPeer.OnChainQuote memory onChainQuote
    ) external;

    /**
     * @notice function performs checks on quote and, if valid, updates quotehandler's state
     * @dev function can only be called by borrowerGateway
     * @param borrower address of borrower
     * @param lenderVault address of the vault
     * @param offChainQuote data for the offChain quote (See notes in DataTypesPeerToPeer.sol)
     * @param quoteTuple quote data (see notes in DataTypesPeerToPeer.sol)
     * @param proof array of bytes needed to verify merkle proof
     */
    function checkAndRegisterOffChainQuote(
        address borrower,
        address lenderVault,
        DataTypesPeerToPeer.OffChainQuote calldata offChainQuote,
        DataTypesPeerToPeer.QuoteTuple calldata quoteTuple,
        bytes32[] memory proof
    ) external;

    /**
     * @notice function to update the quote policy manager for a vault
     * @param lenderVault address for which quote policy manager is being updated
     * @param newPolicyManagerAddress address of new quote policy manager
     * @dev function can only be called by vault owner
     */
    function updateQuotePolicyManagerForVault(
        address lenderVault,
        address newPolicyManagerAddress
    ) external;

    /**
     * @notice function to return address of registry
     * @return registry address
     */
    function addressRegistry() external view returns (address);

    /**
     * @notice function to return the current nonce for offchain quotes
     * @param lender address for which nonce is being retrieved
     * @return current value of nonce
     */
    function offChainQuoteNonce(address lender) external view returns (uint256);

    /**
     * @notice function returns if offchain quote hash is invalidated
     * @param lenderVault address of vault
     * @param hashToCheck hash of the offchain quote
     * @return true if invalidated, else false
     */
    function offChainQuoteIsInvalidated(
        address lenderVault,
        bytes32 hashToCheck
    ) external view returns (bool);

    /**
     * @notice function returns if hash is for an on chain quote
     * @param lenderVault address of vault
     * @param hashToCheck hash of the on chain quote
     * @return true if hash belongs to a valid on-chain quote, else false
     */
    function isOnChainQuote(
        address lenderVault,
        bytes32 hashToCheck
    ) external view returns (bool);

    /**
     * @notice function returns if hash belongs to a published on chain quote
     * @param hashToCheck hash of the on chain quote
     * @return true if hash belongs to a published on-chain quote, else false
     */
    function isPublishedOnChainQuote(
        bytes32 hashToCheck
    ) external view returns (bool);

    /**
     * @notice function returns valid until timestamp of the published on-chain quote
     * @param hashToCheck hash of the on chain quote
     * @return valid until timestamp of the published on-chain quote
     */
    function publishedOnChainQuoteValidUntil(
        bytes32 hashToCheck
    ) external view returns (uint256);

    /**
     * @notice function returns the address of the policy manager for a vault
     * @param lenderVault address of vault
     * @return address of quote policy manager for vault
     * @dev if policy manager address changes in registry, this function will still return the old address
     * unless and until the vault owner calls updateQuotePolicyManagerForVault
     */
    function quotePolicyManagerForVault(
        address lenderVault
    ) external view returns (address);

    /**
     * @notice function returns element of on-chain history
     * @param lenderVault address of vault
     * @return element of on-chain quote history
     */
    function getOnChainQuoteHistory(
        address lenderVault,
        uint256 idx
    ) external view returns (DataTypesPeerToPeer.OnChainQuoteInfo memory);

    /**
     * @notice function returns array of structs containing the on-chain quote hash and validUntil timestamp
     * @param lenderVault address of vault
     * @param startIdx starting index from on chain quote history array
     * @param endIdx ending index of on chain quote history array (non-inclusive)
     * @return array of quote hash and validUntil data for on-chain quote history of a vault
     */
    function getOnChainQuoteHistorySlice(
        address lenderVault,
        uint256 startIdx,
        uint256 endIdx
    ) external view returns (DataTypesPeerToPeer.OnChainQuoteInfo[] memory);

    /**
     * @notice function returns the number of on-chain quotes that were added or updated
     * @param lenderVault address of vault
     * @return number of on-chain quotes that were added or updated
     */
    function getOnChainQuoteHistoryLength(
        address lenderVault
    ) external view returns (uint256);
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.19;

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

interface IVaultCallback {
    /**
     * @notice function which handles borrow side callback
     * @param loan loan data passed to the callback
     * @param data any extra info needed for the callback functionality
     */
    function borrowCallback(
        DataTypesPeerToPeer.Loan calldata loan,
        bytes calldata data
    ) external;

    /**
     * @notice function which handles repay side callback
     * @param loan loan data passed to the callback
     * @param data any extra info needed for the callback functionality
     */
    function repayCallback(
        DataTypesPeerToPeer.Loan calldata loan,
        bytes calldata data
    ) external;
}

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

pragma solidity ^0.8.0;

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

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

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.

pragma solidity ^0.8.0;

/**
 * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
 * checks.
 *
 * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
 * easily result in undesired exploitation or bugs, since developers usually
 * assume that overflows raise errors. `SafeCast` restores this intuition by
 * reverting the transaction when such an operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 *
 * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
 * all math on `uint256` and `int256` and then downcasting.
 */
library SafeCast {
    /**
     * @dev Returns the downcasted uint248 from uint256, reverting on
     * overflow (when the input is greater than largest uint248).
     *
     * Counterpart to Solidity's `uint248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toUint248(uint256 value) internal pure returns (uint248) {
        require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits");
        return uint248(value);
    }

    /**
     * @dev Returns the downcasted uint240 from uint256, reverting on
     * overflow (when the input is greater than largest uint240).
     *
     * Counterpart to Solidity's `uint240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toUint240(uint256 value) internal pure returns (uint240) {
        require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits");
        return uint240(value);
    }

    /**
     * @dev Returns the downcasted uint232 from uint256, reverting on
     * overflow (when the input is greater than largest uint232).
     *
     * Counterpart to Solidity's `uint232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toUint232(uint256 value) internal pure returns (uint232) {
        require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits");
        return uint232(value);
    }

    /**
     * @dev Returns the downcasted uint224 from uint256, reverting on
     * overflow (when the input is greater than largest uint224).
     *
     * Counterpart to Solidity's `uint224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.2._
     */
    function toUint224(uint256 value) internal pure returns (uint224) {
        require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits");
        return uint224(value);
    }

    /**
     * @dev Returns the downcasted uint216 from uint256, reverting on
     * overflow (when the input is greater than largest uint216).
     *
     * Counterpart to Solidity's `uint216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toUint216(uint256 value) internal pure returns (uint216) {
        require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits");
        return uint216(value);
    }

    /**
     * @dev Returns the downcasted uint208 from uint256, reverting on
     * overflow (when the input is greater than largest uint208).
     *
     * Counterpart to Solidity's `uint208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toUint208(uint256 value) internal pure returns (uint208) {
        require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits");
        return uint208(value);
    }

    /**
     * @dev Returns the downcasted uint200 from uint256, reverting on
     * overflow (when the input is greater than largest uint200).
     *
     * Counterpart to Solidity's `uint200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toUint200(uint256 value) internal pure returns (uint200) {
        require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits");
        return uint200(value);
    }

    /**
     * @dev Returns the downcasted uint192 from uint256, reverting on
     * overflow (when the input is greater than largest uint192).
     *
     * Counterpart to Solidity's `uint192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toUint192(uint256 value) internal pure returns (uint192) {
        require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits");
        return uint192(value);
    }

    /**
     * @dev Returns the downcasted uint184 from uint256, reverting on
     * overflow (when the input is greater than largest uint184).
     *
     * Counterpart to Solidity's `uint184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toUint184(uint256 value) internal pure returns (uint184) {
        require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits");
        return uint184(value);
    }

    /**
     * @dev Returns the downcasted uint176 from uint256, reverting on
     * overflow (when the input is greater than largest uint176).
     *
     * Counterpart to Solidity's `uint176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toUint176(uint256 value) internal pure returns (uint176) {
        require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits");
        return uint176(value);
    }

    /**
     * @dev Returns the downcasted uint168 from uint256, reverting on
     * overflow (when the input is greater than largest uint168).
     *
     * Counterpart to Solidity's `uint168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toUint168(uint256 value) internal pure returns (uint168) {
        require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits");
        return uint168(value);
    }

    /**
     * @dev Returns the downcasted uint160 from uint256, reverting on
     * overflow (when the input is greater than largest uint160).
     *
     * Counterpart to Solidity's `uint160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toUint160(uint256 value) internal pure returns (uint160) {
        require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits");
        return uint160(value);
    }

    /**
     * @dev Returns the downcasted uint152 from uint256, reverting on
     * overflow (when the input is greater than largest uint152).
     *
     * Counterpart to Solidity's `uint152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toUint152(uint256 value) internal pure returns (uint152) {
        require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits");
        return uint152(value);
    }

    /**
     * @dev Returns the downcasted uint144 from uint256, reverting on
     * overflow (when the input is greater than largest uint144).
     *
     * Counterpart to Solidity's `uint144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toUint144(uint256 value) internal pure returns (uint144) {
        require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits");
        return uint144(value);
    }

    /**
     * @dev Returns the downcasted uint136 from uint256, reverting on
     * overflow (when the input is greater than largest uint136).
     *
     * Counterpart to Solidity's `uint136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toUint136(uint256 value) internal pure returns (uint136) {
        require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits");
        return uint136(value);
    }

    /**
     * @dev Returns the downcasted uint128 from uint256, reverting on
     * overflow (when the input is greater than largest uint128).
     *
     * Counterpart to Solidity's `uint128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v2.5._
     */
    function toUint128(uint256 value) internal pure returns (uint128) {
        require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits");
        return uint128(value);
    }

    /**
     * @dev Returns the downcasted uint120 from uint256, reverting on
     * overflow (when the input is greater than largest uint120).
     *
     * Counterpart to Solidity's `uint120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toUint120(uint256 value) internal pure returns (uint120) {
        require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits");
        return uint120(value);
    }

    /**
     * @dev Returns the downcasted uint112 from uint256, reverting on
     * overflow (when the input is greater than largest uint112).
     *
     * Counterpart to Solidity's `uint112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toUint112(uint256 value) internal pure returns (uint112) {
        require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits");
        return uint112(value);
    }

    /**
     * @dev Returns the downcasted uint104 from uint256, reverting on
     * overflow (when the input is greater than largest uint104).
     *
     * Counterpart to Solidity's `uint104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toUint104(uint256 value) internal pure returns (uint104) {
        require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits");
        return uint104(value);
    }

    /**
     * @dev Returns the downcasted uint96 from uint256, reverting on
     * overflow (when the input is greater than largest uint96).
     *
     * Counterpart to Solidity's `uint96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.2._
     */
    function toUint96(uint256 value) internal pure returns (uint96) {
        require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits");
        return uint96(value);
    }

    /**
     * @dev Returns the downcasted uint88 from uint256, reverting on
     * overflow (when the input is greater than largest uint88).
     *
     * Counterpart to Solidity's `uint88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toUint88(uint256 value) internal pure returns (uint88) {
        require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits");
        return uint88(value);
    }

    /**
     * @dev Returns the downcasted uint80 from uint256, reverting on
     * overflow (when the input is greater than largest uint80).
     *
     * Counterpart to Solidity's `uint80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toUint80(uint256 value) internal pure returns (uint80) {
        require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits");
        return uint80(value);
    }

    /**
     * @dev Returns the downcasted uint72 from uint256, reverting on
     * overflow (when the input is greater than largest uint72).
     *
     * Counterpart to Solidity's `uint72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toUint72(uint256 value) internal pure returns (uint72) {
        require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits");
        return uint72(value);
    }

    /**
     * @dev Returns the downcasted uint64 from uint256, reverting on
     * overflow (when the input is greater than largest uint64).
     *
     * Counterpart to Solidity's `uint64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v2.5._
     */
    function toUint64(uint256 value) internal pure returns (uint64) {
        require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits");
        return uint64(value);
    }

    /**
     * @dev Returns the downcasted uint56 from uint256, reverting on
     * overflow (when the input is greater than largest uint56).
     *
     * Counterpart to Solidity's `uint56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toUint56(uint256 value) internal pure returns (uint56) {
        require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits");
        return uint56(value);
    }

    /**
     * @dev Returns the downcasted uint48 from uint256, reverting on
     * overflow (when the input is greater than largest uint48).
     *
     * Counterpart to Solidity's `uint48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toUint48(uint256 value) internal pure returns (uint48) {
        require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits");
        return uint48(value);
    }

    /**
     * @dev Returns the downcasted uint40 from uint256, reverting on
     * overflow (when the input is greater than largest uint40).
     *
     * Counterpart to Solidity's `uint40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toUint40(uint256 value) internal pure returns (uint40) {
        require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits");
        return uint40(value);
    }

    /**
     * @dev Returns the downcasted uint32 from uint256, reverting on
     * overflow (when the input is greater than largest uint32).
     *
     * Counterpart to Solidity's `uint32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v2.5._
     */
    function toUint32(uint256 value) internal pure returns (uint32) {
        require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits");
        return uint32(value);
    }

    /**
     * @dev Returns the downcasted uint24 from uint256, reverting on
     * overflow (when the input is greater than largest uint24).
     *
     * Counterpart to Solidity's `uint24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toUint24(uint256 value) internal pure returns (uint24) {
        require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits");
        return uint24(value);
    }

    /**
     * @dev Returns the downcasted uint16 from uint256, reverting on
     * overflow (when the input is greater than largest uint16).
     *
     * Counterpart to Solidity's `uint16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v2.5._
     */
    function toUint16(uint256 value) internal pure returns (uint16) {
        require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits");
        return uint16(value);
    }

    /**
     * @dev Returns the downcasted uint8 from uint256, reverting on
     * overflow (when the input is greater than largest uint8).
     *
     * Counterpart to Solidity's `uint8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v2.5._
     */
    function toUint8(uint256 value) internal pure returns (uint8) {
        require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits");
        return uint8(value);
    }

    /**
     * @dev Converts a signed int256 into an unsigned uint256.
     *
     * Requirements:
     *
     * - input must be greater than or equal to 0.
     *
     * _Available since v3.0._
     */
    function toUint256(int256 value) internal pure returns (uint256) {
        require(value >= 0, "SafeCast: value must be positive");
        return uint256(value);
    }

    /**
     * @dev Returns the downcasted int248 from int256, reverting on
     * overflow (when the input is less than smallest int248 or
     * greater than largest int248).
     *
     * Counterpart to Solidity's `int248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toInt248(int256 value) internal pure returns (int248 downcasted) {
        downcasted = int248(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 248 bits");
    }

    /**
     * @dev Returns the downcasted int240 from int256, reverting on
     * overflow (when the input is less than smallest int240 or
     * greater than largest int240).
     *
     * Counterpart to Solidity's `int240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toInt240(int256 value) internal pure returns (int240 downcasted) {
        downcasted = int240(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 240 bits");
    }

    /**
     * @dev Returns the downcasted int232 from int256, reverting on
     * overflow (when the input is less than smallest int232 or
     * greater than largest int232).
     *
     * Counterpart to Solidity's `int232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toInt232(int256 value) internal pure returns (int232 downcasted) {
        downcasted = int232(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 232 bits");
    }

    /**
     * @dev Returns the downcasted int224 from int256, reverting on
     * overflow (when the input is less than smallest int224 or
     * greater than largest int224).
     *
     * Counterpart to Solidity's `int224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.7._
     */
    function toInt224(int256 value) internal pure returns (int224 downcasted) {
        downcasted = int224(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 224 bits");
    }

    /**
     * @dev Returns the downcasted int216 from int256, reverting on
     * overflow (when the input is less than smallest int216 or
     * greater than largest int216).
     *
     * Counterpart to Solidity's `int216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toInt216(int256 value) internal pure returns (int216 downcasted) {
        downcasted = int216(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 216 bits");
    }

    /**
     * @dev Returns the downcasted int208 from int256, reverting on
     * overflow (when the input is less than smallest int208 or
     * greater than largest int208).
     *
     * Counterpart to Solidity's `int208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toInt208(int256 value) internal pure returns (int208 downcasted) {
        downcasted = int208(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 208 bits");
    }

    /**
     * @dev Returns the downcasted int200 from int256, reverting on
     * overflow (when the input is less than smallest int200 or
     * greater than largest int200).
     *
     * Counterpart to Solidity's `int200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toInt200(int256 value) internal pure returns (int200 downcasted) {
        downcasted = int200(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 200 bits");
    }

    /**
     * @dev Returns the downcasted int192 from int256, reverting on
     * overflow (when the input is less than smallest int192 or
     * greater than largest int192).
     *
     * Counterpart to Solidity's `int192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toInt192(int256 value) internal pure returns (int192 downcasted) {
        downcasted = int192(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 192 bits");
    }

    /**
     * @dev Returns the downcasted int184 from int256, reverting on
     * overflow (when the input is less than smallest int184 or
     * greater than largest int184).
     *
     * Counterpart to Solidity's `int184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toInt184(int256 value) internal pure returns (int184 downcasted) {
        downcasted = int184(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 184 bits");
    }

    /**
     * @dev Returns the downcasted int176 from int256, reverting on
     * overflow (when the input is less than smallest int176 or
     * greater than largest int176).
     *
     * Counterpart to Solidity's `int176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toInt176(int256 value) internal pure returns (int176 downcasted) {
        downcasted = int176(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 176 bits");
    }

    /**
     * @dev Returns the downcasted int168 from int256, reverting on
     * overflow (when the input is less than smallest int168 or
     * greater than largest int168).
     *
     * Counterpart to Solidity's `int168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toInt168(int256 value) internal pure returns (int168 downcasted) {
        downcasted = int168(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 168 bits");
    }

    /**
     * @dev Returns the downcasted int160 from int256, reverting on
     * overflow (when the input is less than smallest int160 or
     * greater than largest int160).
     *
     * Counterpart to Solidity's `int160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toInt160(int256 value) internal pure returns (int160 downcasted) {
        downcasted = int160(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 160 bits");
    }

    /**
     * @dev Returns the downcasted int152 from int256, reverting on
     * overflow (when the input is less than smallest int152 or
     * greater than largest int152).
     *
     * Counterpart to Solidity's `int152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toInt152(int256 value) internal pure returns (int152 downcasted) {
        downcasted = int152(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 152 bits");
    }

    /**
     * @dev Returns the downcasted int144 from int256, reverting on
     * overflow (when the input is less than smallest int144 or
     * greater than largest int144).
     *
     * Counterpart to Solidity's `int144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toInt144(int256 value) internal pure returns (int144 downcasted) {
        downcasted = int144(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 144 bits");
    }

    /**
     * @dev Returns the downcasted int136 from int256, reverting on
     * overflow (when the input is less than smallest int136 or
     * greater than largest int136).
     *
     * Counterpart to Solidity's `int136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toInt136(int256 value) internal pure returns (int136 downcasted) {
        downcasted = int136(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 136 bits");
    }

    /**
     * @dev Returns the downcasted int128 from int256, reverting on
     * overflow (when the input is less than smallest int128 or
     * greater than largest int128).
     *
     * Counterpart to Solidity's `int128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v3.1._
     */
    function toInt128(int256 value) internal pure returns (int128 downcasted) {
        downcasted = int128(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 128 bits");
    }

    /**
     * @dev Returns the downcasted int120 from int256, reverting on
     * overflow (when the input is less than smallest int120 or
     * greater than largest int120).
     *
     * Counterpart to Solidity's `int120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toInt120(int256 value) internal pure returns (int120 downcasted) {
        downcasted = int120(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 120 bits");
    }

    /**
     * @dev Returns the downcasted int112 from int256, reverting on
     * overflow (when the input is less than smallest int112 or
     * greater than largest int112).
     *
     * Counterpart to Solidity's `int112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toInt112(int256 value) internal pure returns (int112 downcasted) {
        downcasted = int112(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 112 bits");
    }

    /**
     * @dev Returns the downcasted int104 from int256, reverting on
     * overflow (when the input is less than smallest int104 or
     * greater than largest int104).
     *
     * Counterpart to Solidity's `int104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toInt104(int256 value) internal pure returns (int104 downcasted) {
        downcasted = int104(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 104 bits");
    }

    /**
     * @dev Returns the downcasted int96 from int256, reverting on
     * overflow (when the input is less than smallest int96 or
     * greater than largest int96).
     *
     * Counterpart to Solidity's `int96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.7._
     */
    function toInt96(int256 value) internal pure returns (int96 downcasted) {
        downcasted = int96(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 96 bits");
    }

    /**
     * @dev Returns the downcasted int88 from int256, reverting on
     * overflow (when the input is less than smallest int88 or
     * greater than largest int88).
     *
     * Counterpart to Solidity's `int88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toInt88(int256 value) internal pure returns (int88 downcasted) {
        downcasted = int88(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 88 bits");
    }

    /**
     * @dev Returns the downcasted int80 from int256, reverting on
     * overflow (when the input is less than smallest int80 or
     * greater than largest int80).
     *
     * Counterpart to Solidity's `int80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toInt80(int256 value) internal pure returns (int80 downcasted) {
        downcasted = int80(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 80 bits");
    }

    /**
     * @dev Returns the downcasted int72 from int256, reverting on
     * overflow (when the input is less than smallest int72 or
     * greater than largest int72).
     *
     * Counterpart to Solidity's `int72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toInt72(int256 value) internal pure returns (int72 downcasted) {
        downcasted = int72(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 72 bits");
    }

    /**
     * @dev Returns the downcasted int64 from int256, reverting on
     * overflow (when the input is less than smallest int64 or
     * greater than largest int64).
     *
     * Counterpart to Solidity's `int64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v3.1._
     */
    function toInt64(int256 value) internal pure returns (int64 downcasted) {
        downcasted = int64(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 64 bits");
    }

    /**
     * @dev Returns the downcasted int56 from int256, reverting on
     * overflow (when the input is less than smallest int56 or
     * greater than largest int56).
     *
     * Counterpart to Solidity's `int56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toInt56(int256 value) internal pure returns (int56 downcasted) {
        downcasted = int56(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 56 bits");
    }

    /**
     * @dev Returns the downcasted int48 from int256, reverting on
     * overflow (when the input is less than smallest int48 or
     * greater than largest int48).
     *
     * Counterpart to Solidity's `int48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toInt48(int256 value) internal pure returns (int48 downcasted) {
        downcasted = int48(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 48 bits");
    }

    /**
     * @dev Returns the downcasted int40 from int256, reverting on
     * overflow (when the input is less than smallest int40 or
     * greater than largest int40).
     *
     * Counterpart to Solidity's `int40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toInt40(int256 value) internal pure returns (int40 downcasted) {
        downcasted = int40(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 40 bits");
    }

    /**
     * @dev Returns the downcasted int32 from int256, reverting on
     * overflow (when the input is less than smallest int32 or
     * greater than largest int32).
     *
     * Counterpart to Solidity's `int32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v3.1._
     */
    function toInt32(int256 value) internal pure returns (int32 downcasted) {
        downcasted = int32(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 32 bits");
    }

    /**
     * @dev Returns the downcasted int24 from int256, reverting on
     * overflow (when the input is less than smallest int24 or
     * greater than largest int24).
     *
     * Counterpart to Solidity's `int24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toInt24(int256 value) internal pure returns (int24 downcasted) {
        downcasted = int24(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 24 bits");
    }

    /**
     * @dev Returns the downcasted int16 from int256, reverting on
     * overflow (when the input is less than smallest int16 or
     * greater than largest int16).
     *
     * Counterpart to Solidity's `int16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v3.1._
     */
    function toInt16(int256 value) internal pure returns (int16 downcasted) {
        downcasted = int16(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 16 bits");
    }

    /**
     * @dev Returns the downcasted int8 from int256, reverting on
     * overflow (when the input is less than smallest int8 or
     * greater than largest int8).
     *
     * Counterpart to Solidity's `int8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v3.1._
     */
    function toInt8(int256 value) internal pure returns (int8 downcasted) {
        downcasted = int8(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 8 bits");
    }

    /**
     * @dev Converts an unsigned uint256 into a signed int256.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxInt256.
     *
     * _Available since v3.0._
     */
    function toInt256(uint256 value) internal pure returns (int256) {
        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
        require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256");
        return int256(value);
    }
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

{
  "compilationTarget": {
    "contracts/peer-to-peer/BorrowerGateway.sol": "BorrowerGateway"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "remappings": []
}