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//SPDX-License-Identifier: MIT
pragma solidity 0.8.18;

import "@openzeppelin-norm/contracts/access/Ownable.sol";
import "@openzeppelin-norm/contracts/security/Pausable.sol";
import "@openzeppelin-norm/contracts/utils/Address.sol";
import "../interfaces/sellerFinancing/ISellerFinancing.sol";
import "../interfaces/sanctions/SanctionsList.sol";

/// @title MarketplaceIntegration
/// @custom:version 1.0
/// @author zishansami102 (zishansami.eth)
/// @custom:contributor captnseagraves (captnseagraves.eth)

contract MarketplaceIntegration is Ownable, Pausable {
    using Address for address payable;

    /// @dev Internal constant address for the Chainalysis OFAC sanctions oracle
    address private constant SANCTIONS_CONTRACT = 0x40C57923924B5c5c5455c48D93317139ADDaC8fb;

    /// @notice The base value for fees in the protocol.
    uint256 private constant BASE_BPS = 10_000;

    /// @dev The status of sanctions checks
    bool internal _sanctionsPause;

    uint256 public marketplaceFeeBps;

    address payable public marketplaceFeeRecipient;

    address public sellerFinancingContractAddress;

    error ZeroAddress();

    error InsufficientMsgValue(uint256 given, uint256 expected);

    error SanctionedAddress(address account);

    constructor(
        address _sellerFinancingContractAddress,
        address _marketplaceFeeRecipient,
        uint256 _marketplaceFeeBps
    ) {
        _requireNonZeroAddress(_sellerFinancingContractAddress);
        _requireNonZeroAddress(_marketplaceFeeRecipient);

        sellerFinancingContractAddress = _sellerFinancingContractAddress;
        marketplaceFeeRecipient = payable(_marketplaceFeeRecipient);
        marketplaceFeeBps = _marketplaceFeeBps;
    }

    /// @param newSellerFinancingContractAddress New address for SellerFinancing contract
    function updateSellerFinancingContractAddress(
        address newSellerFinancingContractAddress
    ) external onlyOwner {
        _requireNonZeroAddress(newSellerFinancingContractAddress);
        sellerFinancingContractAddress = newSellerFinancingContractAddress;
    }

    /// @param newMarketplaceFeeRecipient New address for MarketplaceFeeRecipient
    function updateMarketplaceFeeRecipient(address newMarketplaceFeeRecipient) external onlyOwner {
        _requireNonZeroAddress(newMarketplaceFeeRecipient);
        marketplaceFeeRecipient = payable(newMarketplaceFeeRecipient);
    }

    /// @param newMarketplaceFeeBps New value for marketplaceFeeBps
    function updateMarketplaceFeeBps(uint256 newMarketplaceFeeBps) external onlyOwner {
        marketplaceFeeBps = newMarketplaceFeeBps;
    }

    function pause() external onlyOwner {
        _pause();
    }

    function unpause() external onlyOwner {
        _unpause();
    }

    function pauseSanctions() external onlyOwner {
        _sanctionsPause = true;
    }

    function unpauseSanctions() external onlyOwner {
        _sanctionsPause = false;
    }

    function buyWithFinancing(
        ISellerFinancing.Offer memory offer,
        bytes calldata signature,
        address buyer,
        uint256 nftId
    ) external payable whenNotPaused {
        _requireIsNotSanctioned(msg.sender);
        _requireIsNotSanctioned(buyer);

        uint256 marketplaceFeeAmount = (offer.price * marketplaceFeeBps) / BASE_BPS;
        if (msg.value < offer.downPaymentAmount + marketplaceFeeAmount) {
            revert InsufficientMsgValue(msg.value, offer.downPaymentAmount + marketplaceFeeAmount);
        }
        marketplaceFeeRecipient.sendValue(marketplaceFeeAmount);

        ISellerFinancing(sellerFinancingContractAddress).buyWithFinancing{
            value: msg.value - marketplaceFeeAmount
        }(offer, signature, buyer, nftId);
    }

    function _requireNonZeroAddress(address given) internal pure {
        if (given == address(0)) {
            revert ZeroAddress();
        }
    }

    function _requireIsNotSanctioned(address addressToCheck) internal view {
        if (!_sanctionsPause) {
            SanctionsList sanctionsList = SanctionsList(SANCTIONS_CONTRACT);
            bool isToSanctioned = sanctionsList.isSanctioned(addressToCheck);
            if (isToSanctioned) {
                revert SanctionedAddress(addressToCheck);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

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

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (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
     * ====
     *
     * [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://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return 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 0.8.18;

import "./ISellerFinancingAdmin.sol";
import "./ISellerFinancingEvents.sol";
import "./ISellerFinancingStructs.sol";
import "./ISellerFinancingErrors.sol";

/// @title The SellerFinancing interface for NiftyApes
interface ISellerFinancing is
    ISellerFinancingAdmin,
    ISellerFinancingEvents,
    ISellerFinancingStructs,
    ISellerFinancingErrors
{
    /// @notice Returns an EIP712 standard compatible hash for a given offer.
    /// @dev    This hash can be signed to create a valid offer.
    /// @param offer The offer to compute the hash for
    function getOfferHash(Offer memory offer) external view returns (bytes32);

    /// @notice Returns the signer of an offer or throws an error.
    /// @param offer The offer to use for retrieving the signer
    /// @param signature The signature to use for retrieving the signer
    function getOfferSigner(Offer memory offer, bytes memory signature) external returns (address);

    /// @notice Returns true if a given signature has been revoked otherwise false
    /// @param signature The signature to check
    function getOfferSignatureStatus(bytes calldata signature) external view returns (bool status);

    /// @notice Returns the usage count of a given signature
    ///         Only increments for collection offers
    /// @param signature The signature to return a count for
    function getCollectionOfferCount(bytes memory signature) external view returns (uint64 count);

    /// @notice Returns value stored in `royaltiesEngineContractAddress`
    function royaltiesEngineContractAddress() external returns (address);

    /// @notice Returns value stored in `delegateRegistryContractAddress`
    function delegateRegistryContractAddress() external returns (address);

    /// @notice Returns value stored in `seaportContractAddress`
    function seaportContractAddress() external returns (address);

    /// @notice Returns value stored in `wethContractAddress`
    function wethContractAddress() external returns (address);

    /// @notice Withdraw a given offer
    /// @dev    Calling this method allows users to withdraw a given offer by cancelling their signature on chain
    /// @param offer The offer to withdraw
    /// @param signature The signature of the offer
    function withdrawOfferSignature(Offer memory offer, bytes calldata signature) external;

    /// @notice Start a loan as buyer using a signed offer.
    /// @param offer The details of the financing offer
    /// @param signature A signed offerHash
    /// @param buyer The address of the buyer
    /// @dev   buyer provided as param to allow for 3rd party marketplace integrations
    function buyWithFinancing(
        Offer calldata offer,
        bytes memory signature,
        address buyer,
        uint256 nftId
    ) external payable;

    /// @notice Make a partial payment or full repayment of a loan.
    /// @dev Any address may make a payment towards the loan.
    /// @param nftContractAddress The address of the NFT collection
    /// @param nftId The id of a specified NFT
    function makePayment(address nftContractAddress, uint256 nftId) external payable;

    /// @notice Seize an asset from a defaulted loan.
    /// @dev    This function is only callable by the seller address
    /// @param nftContractAddress The address of the NFT collection
    /// @param nftId The id of a specified NFT
    function seizeAsset(address nftContractAddress, uint256 nftId) external;

    /// @notice Sell the underlying nft and repay the loan using the proceeds of the sale.
    ///         Transfer remaining funds to the buyer
    /// @dev    This function is only callable by the buyer address
    /// @dev    This function only supports valid Seaport orders
    /// @param nftContractAddress The address of the NFT collection
    /// @param nftId The id of a specified NFT
    /// @param minProfitAmount Minimum amount to accept for buyer's profit. Provides slippage control.
    /// @param data Order encoded as bytes
    function instantSell(
        address nftContractAddress,
        uint256 nftId,
        uint256 minProfitAmount,
        bytes calldata data
    ) external;

    /// @notice Returns a loan identified by a given nft.
    /// @param nftContractAddress The address of the NFT collection
    /// @param nftId The id of a specified NFT
    function getLoan(address nftContractAddress, uint256 nftId) external view returns (Loan memory);

    /// @notice Returns the underlying nft of a specified a seller financing ticket id.
    /// @param sellerFinancingTicketId The id of a specified seller financing ticket id
    function getUnderlyingNft(
        uint256 sellerFinancingTicketId
    ) external view returns (UnderlyingNft memory);

    /// @notice Returns minimum payment required for the current period and current period interest
    /// @dev    This function calculates a sum of current and late payment values if applicable
    /// @param loan Loan struct details
    /// @return minimumPayment Minimum payment required for the current period
    /// @return periodInterest Unpaid interest amount for the current period
    function calculateMinimumPayment(
        Loan memory loan
    ) external view returns (uint256 minimumPayment, uint256 periodInterest);

    function initialize(
        address newRoyaltiesEngineAddress,
        address newDelegateRegistryAddress,
        address newSeaportContractAddress,
        address newWethContractAddress
    ) external;
}

pragma solidity 0.8.18;

interface SanctionsList {
    function isSanctioned(address addr) external view returns (bool);
}

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

pragma solidity ^0.8.0;

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

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

//SPDX-License-Identifier: MIT
pragma solidity 0.8.18;

/// @title NiftyApes interface for the admin role.
interface ISellerFinancingAdmin {
    /// @notice Pauses all interactions with the contract.
    ///         This is intended to be used as an emergency measure to avoid loosing funds.
    function pause() external;

    /// @notice Unpauses all interactions with the contract.
    function unpause() external;

    /// @notice Pauses sanctions checks
    function pauseSanctions() external;

    /// @notice Unpauses sanctions checks
    function unpauseSanctions() external;

    /// @notice Updates royalty engine contract address to new address
    /// @param newRoyaltyEngineContractAddress New royalty engine address
    function updateRoyaltiesEngineContractAddress(address newRoyaltyEngineContractAddress) external;

    /// @notice Updates delegate registry contract address to new address
    /// @param newDelegateRegistryContractAddress New delegate registry address
    function updateDelegateRegistryContractAddress(
        address newDelegateRegistryContractAddress
    ) external;

    /// @notice Updates seaport contract address to new address
    /// @param newSeaportContractAddress New seaport address
    function updateSeaportContractAddress(address newSeaportContractAddress) external;

    /// @notice Updates Weth contract address to new address
    /// @param newWethContractAddress New Weth contract address
    function updateWethContractAddress(address newWethContractAddress) external;
}

//SPDX-License-Identifier: MIT
pragma solidity 0.8.18;

import "./ISellerFinancingStructs.sol";

/// @title Events emitted by the offers part of the protocol.
interface ISellerFinancingEvents {
    /// @notice Emitted when a offer signature gets has been used
    /// @param nftContractAddress The nft contract address
    /// @param nftId The nft id, this field can be meaningless if the offer is a floor term offer
    /// @param offer The offer details
    /// @param signature The signature that has been revoked
    event OfferSignatureUsed(
        address indexed nftContractAddress,
        uint256 indexed nftId,
        ISellerFinancingStructs.Offer offer,
        bytes signature
    );

    /// @notice Emitted when a new loan is executed
    /// @param nftContractAddress The nft contract address
    /// @param nftId The nft id
    /// @param signature The signature that has been used
    /// @param loan The loan details
    event LoanExecuted(
        address indexed nftContractAddress,
        uint256 indexed nftId,
        bytes signature,
        ISellerFinancingStructs.Loan loan
    );

    /// @notice Emitted when a payment is made toward the loan
    /// @param nftContractAddress The nft contract address
    /// @param nftId The nft id
    /// @param amount The amount paid towards the loan
    /// @param totalRoyaltiesPaid The amount paid in royalties
    /// @param interestPaid the amount paid in interest
    /// @param loan The loan details
    event PaymentMade(
        address indexed nftContractAddress,
        uint256 indexed nftId,
        uint256 amount,
        uint256 totalRoyaltiesPaid,
        uint256 interestPaid,
        ISellerFinancingStructs.Loan loan
    );

    /// @notice Emitted when a loan is fully repaid
    /// @param nftContractAddress The nft contract address
    /// @param nftId The nft id
    /// @param loan The loan details
    event LoanRepaid(
        address indexed nftContractAddress,
        uint256 indexed nftId,
        ISellerFinancingStructs.Loan loan
    );

    /// @notice Emitted when an asset is seized
    /// @param nftContractAddress The nft contract address
    /// @param nftId The nft id
    /// @param loan The loan details
    event AssetSeized(
        address indexed nftContractAddress,
        uint256 indexed nftId,
        ISellerFinancingStructs.Loan loan
    );

    /// @notice Emitted when an NFT is sold instantly on Seaport
    /// @param nftContractAddress The nft contract address
    /// @param nftId The tokenId of the NFT which was put as collateral
    /// @param saleAmount The sale value
    event InstantSell(
        address indexed nftContractAddress,
        uint256 indexed nftId,
        uint256 saleAmount
    );

    /// @notice Emitted when an locked NFT is listed for sale through Seaport
    /// @param nftContractAddress The nft contract address
    /// @param nftId The tokenId of the listed NFT
    /// @param orderHash The hash of the order which listed the NFT
    /// @param loan The loan details at the time of listing
    event ListedOnSeaport(
        address indexed nftContractAddress,
        uint256 indexed nftId,
        bytes32 indexed orderHash,
        ISellerFinancingStructs.Loan loan
    );

    /// @notice Emitted when a seaport NFT listing thorugh NiftyApes is cancelled by the borrower
    /// @param nftContractAddress The nft contract address
    /// @param nftId The tokenId of the listed NFT
    /// @param orderHash The hash of the order which listed the NFT
    /// @param loan The loan details at the time of listing
    event ListingCancelledSeaport(
        address indexed nftContractAddress,
        uint256 indexed nftId,
        bytes32 indexed orderHash,
        ISellerFinancingStructs.Loan loan
    );

    /// @notice Emitted when a flashClaim is executed on an NFT
    /// @param nftContractAddress The address of the NFT collection
    /// @param nftId The id of the specified NFT
    /// @param receiverAddress The address of the external contract that will receive and return the nft
    event FlashClaim(address nftContractAddress, uint256 nftId, address receiverAddress);
}

//SPDX-License-Identifier: MIT
pragma solidity 0.8.18;

interface ISellerFinancingStructs {
    struct Offer {
        // SLOT 0
        // Full price of NFT
        uint128 price;
        // Down payment for NFT financing
        uint128 downPaymentAmount;
        // SLOT 1 - 128 remaining
        // Minimum amount of total principal to be paid each period
        uint128 minimumPrincipalPerPeriod;
        // SLOT 2
        // Offer NFT ID
        uint256 nftId;
        // SLOT 3 - 32 remaining
        // Offer NFT contract address
        address nftContractAddress;
        // Offer creator
        address creator;
        // Interest rate basis points to be paid against remainingPrincipal per period
        uint32 periodInterestRateBps;
        // Number of seconds per period
        uint32 periodDuration;
        // Timestamp of offer expiration
        uint32 expiration;
        // collection offer usage limit, ignored if nftId is not ~uint256(0)
        uint64 collectionOfferLimit;
    }

    struct Loan {
        // SLOT 0
        // Buyer loan receipt nftId
        uint256 buyerNftId;
        // SLOT 1
        // Seller loan receipt nftId
        uint256 sellerNftId;
        // SLOT 2
        // Remaining principal on loan
        uint128 remainingPrincipal;
        // Minimum amount of total principal to be paid each period
        uint128 minimumPrincipalPerPeriod;
        // SLOT 3 - 128 remaining
        // Interest rate basis points to be paid against remainingPrincipal per period
        uint32 periodInterestRateBps;
        // Number of seconds per period
        uint32 periodDuration;
        // Timestamp of period end
        uint32 periodEndTimestamp;
        // Timestamp of period beginning
        uint32 periodBeginTimestamp;
    }

    struct UnderlyingNft {
        // NFT contract address
        address nftContractAddress;
        // NFT ID
        uint256 nftId;
    }
}

//SPDX-License-Identifier: MIT
pragma solidity 0.8.18;

import "../seaport/ISeaport.sol";

/// @title The SellerFinancing interface defining custom errors
interface ISellerFinancingErrors {
    error ZeroAddress();

    error SignatureNotAvailable(bytes signature);

    error OfferExpired();

    error SanctionedAddress(address account);

    error NotNftOwner(address nftContractAddress, uint256 nftId, address account);

    error InvalidSigner(address signer, address expected);

    error LoanAlreadyClosed();

    error InvalidCaller(address caller, address expected);

    error CannotBuySellerFinancingTicket();

    error NftIdsMustMatch();

    error CollectionOfferLimitReached();

    error InvalidOffer0ItemType(ISeaport.ItemType given, ISeaport.ItemType expected);

    error InvalidOffer0Token(address given, address expected);

    error InvalidOfferLength(uint256 given, uint256 expected);

    error InvalidConsideration0Identifier(uint256 given, uint256 expected);

    error InvalidConsiderationItemType(
        uint256 index,
        ISeaport.ItemType given,
        ISeaport.ItemType expected
    );

    error InvalidConsiderationToken(uint256 index, address given, address expected);

    error InvalidPeriodDuration();

    error InsufficientMsgValue(uint256 msgValueSent, uint256 minMsgValueExpected);

    error DownPaymentGreaterThanOrEqualToOfferPrice(uint256 downPaymentAmount, uint256 offerPrice);

    error InvalidMinimumPrincipalPerPeriod(
        uint256 givenMinPrincipalPerPeriod,
        uint256 maxMinPrincipalPerPeriod
    );

    error SoftGracePeriodEnded();

    error AmountReceivedLessThanRequiredMinimumPayment(
        uint256 amountReceived,
        uint256 minExpectedAmount
    );

    error LoanNotInDefault();

    error ExecuteOperationFailed();

    error SeaportOrderNotFulfilled();

    error WethConversionFailed();

    error InsufficientAmountReceivedFromSale(
        uint256 saleAmountReceived,
        uint256 minSaleAmountRequired
    );

    error InvalidIndex(uint256 index, uint256 ownerTokenBalance);

    error InsufficientBalance(uint256 amountRequested, uint256 contractBalance);

    error ConditionSendValueFailed(address from, address to, uint256 amount);
}

//SPDX-License-Identifier: MIT
pragma solidity 0.8.18;

interface ISeaport {
    enum OrderType {
        // 0: no partial fills, anyone can execute
        FULL_OPEN,
        // 1: partial fills supported, anyone can execute
        PARTIAL_OPEN,
        // 2: no partial fills, only offerer or zone can execute
        FULL_RESTRICTED,
        // 3: partial fills supported, only offerer or zone can execute
        PARTIAL_RESTRICTED
    }

    enum ItemType {
        // 0: ETH on mainnet, MATIC on polygon, etc.
        NATIVE,
        // 1: ERC20 items (ERC777 and ERC20 analogues could also technically work)
        ERC20,
        // 2: ERC721 items
        ERC721,
        // 3: ERC1155 items
        ERC1155,
        // 4: ERC721 items where a number of tokenIds are supported
        ERC721_WITH_CRITERIA,
        // 5: ERC1155 items where a number of ids are supported
        ERC1155_WITH_CRITERIA
    }

    /**
     * @dev An offer item has five components: an item type (ETH or other native
     *      tokens, ERC20, ERC721, and ERC1155, as well as criteria-based ERC721 and
     *      ERC1155), a token address, a dual-purpose "identifierOrCriteria"
     *      component that will either represent a tokenId or a merkle root
     *      depending on the item type, and a start and end amount that support
     *      increasing or decreasing amounts over the duration of the respective
     *      order.
     */
    struct OfferItem {
        ItemType itemType;
        address token;
        uint256 identifierOrCriteria;
        uint256 startAmount;
        uint256 endAmount;
    }

    /**
     * @dev A consideration item has the same five components as an offer item and
     *      an additional sixth component designating the required recipient of the
     *      item.
     */
    struct ConsiderationItem {
        ItemType itemType;
        address token;
        uint256 identifierOrCriteria;
        uint256 startAmount;
        uint256 endAmount;
        address payable recipient;
    }

    /**
     * @notice Retrieve the current counter for a given offerer.
     *
     * @param offerer The offerer in question.
     *
     * @return counter The current counter.
     */
    function getCounter(address offerer) external view returns (uint256 counter);

    /**
     * @notice Retrieve the status of a given order by hash, including whether
     *         the order has been cancelled or validated and the fraction of the
     *         order that has been filled.
     *
     * @param orderHash The order hash in question.
     *
     * @return isValidated A boolean indicating whether the order in question
     *                     has been validated (i.e. previously approved or
     *                     partially filled).
     * @return isCancelled A boolean indicating whether the order in question
     *                     has been cancelled.
     * @return totalFilled The total portion of the order that has been filled
     *                     (i.e. the "numerator").
     * @return totalSize   The total size of the order that is either filled or
     *                     unfilled (i.e. the "denominator").
     */
    function getOrderStatus(
        bytes32 orderHash
    )
        external
        view
        returns (bool isValidated, bool isCancelled, uint256 totalFilled, uint256 totalSize);

    /**
     * @notice Retrieve the order hash for a given order.
     *
     * @param order The components of the order.
     *
     * @return orderHash The order hash.
     */
    function getOrderHash(OrderComponents calldata order) external view returns (bytes32 orderHash);

    /**
     * @dev An order contains eleven components: an offerer, a zone (or account that
     *      can cancel the order or restrict who can fulfill the order depending on
     *      the type), the order type (specifying partial fill support as well as
     *      restricted order status), the start and end time, a hash that will be
     *      provided to the zone when validating restricted orders, a salt, a key
     *      corresponding to a given conduit, a counter, and an arbitrary number of
     *      offer items that can be spent along with consideration items that must
     *      be received by their respective recipient.
     */
    struct OrderComponents {
        address offerer;
        address zone;
        OfferItem[] offer;
        ConsiderationItem[] consideration;
        OrderType orderType;
        uint256 startTime;
        uint256 endTime;
        bytes32 zoneHash;
        uint256 salt;
        bytes32 conduitKey;
        uint256 counter;
    }

    /**
     * @dev The full set of order components, with the exception of the counter,
     *      must be supplied when fulfilling more sophisticated orders or groups of
     *      orders. The total number of original consideration items must also be
     *      supplied, as the caller may specify additional consideration items.
     */
    struct OrderParameters {
        address offerer; // 0x00
        address zone; // 0x20
        OfferItem[] offer; // 0x40
        ConsiderationItem[] consideration; // 0x60
        OrderType orderType; // 0x80
        uint256 startTime; // 0xa0
        uint256 endTime; // 0xc0
        bytes32 zoneHash; // 0xe0
        uint256 salt; // 0x100
        bytes32 conduitKey; // 0x120
        uint256 totalOriginalConsiderationItems; // 0x140
        // offer.length                          // 0x160
    }

    /**
     * @dev Orders require a signature in addition to the other order parameters.
     */
    struct Order {
        OrderParameters parameters;
        bytes signature;
    }

    function fulfillOrder(
        Order calldata order,
        bytes32 fulfillerConduitKey
    ) external payable returns (bool fulfilled);

    function validate(Order[] memory orders) external returns (bool validated);

    function cancel(OrderComponents[] memory orders) external returns (bool cancelled);
}

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    "ds-test/=lib/forge-std/lib/ds-test/src/",
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    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "lib/forge-std:ds-test/=lib/forge-std/lib/ds-test/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
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  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
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  },
  "evmVersion": "paris",
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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0000000000000000000000001ad9752a86bbdb4b9b33addc00e008d6e0308d03000000000000000000000000be9b799d066a51f77d353fc72e832f38037893620000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _sellerFinancingContractAddress (address): 0x1AD9752A86BBDB4b9B33Addc00e008D6E0308d03
Arg [1] : _marketplaceFeeRecipient (address): 0xbe9B799D066A51F77d353Fc72e832f3803789362
Arg [2] : _marketplaceFeeBps (uint256): 0

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000001ad9752a86bbdb4b9b33addc00e008d6e0308d03
Arg [1] : 000000000000000000000000be9b799d066a51f77d353fc72e832f3803789362
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000000