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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/interfaces/IERC2981.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

/**
 * @title CuboidsMarketplace v3
 *
 * FIXES vs v2:
 *   [CRITICAL] sweepFloor drained escrowed offer ETH - the "refund overpayment"
 *              block used address(this).balance which includes locked offer funds.
 *              Fixed: require(msg.value == totalCost) is enforced before execution,
 *              so there is never overpayment. The drain block is removed entirely.
 *
 *   [NEW]      escrowBalance - tracks exactly how much ETH is locked in offers.
 *              sweepFloor only uses msg.value, never touches escrow.
 *              adminWithdrawExcess() protects escrow from being drained by owner.
 *
 *   [NEW]      Offer expiry - every offer has a deadline (default 7 days).
 *              expireOffer() lets anyone trigger a refund after expiry.
 *              acceptOffer() rejects expired offers - buyer must re-offer.
 *
 *   [NEW]      adminRefundOffer() - owner can force-refund any stuck offer.
 *
 *   [CLARIFIED] Cancelled listings do NOT affect offers. Offers stay active
 *               and can be cancelled by the buyer or accepted by the token owner
 *               at any time, regardless of listing state.
 */
contract CuboidsMarketplace is ReentrancyGuard, Ownable {

    // ==========================================
    // STATE
    // ==========================================

    IERC721  public immutable nftContract;
    IERC2981 public immutable royaltyContract;

    address public feeRecipient;
    uint256 public feeBps = 200; // 2%

    uint256 public offerDuration = 7 days;

    struct Listing {
        address seller;
        uint256 price;
        bool    active;
    }

    struct Offer {
        address buyer;
        uint256 amount;
        uint256 expiry;
        bool    active;
    }

    mapping(uint256 => Listing)                     public listings;
    mapping(uint256 => mapping(address => Offer))   public offers;
    mapping(uint256 => address[])                   public offerors;

    /// @dev Total ETH locked in active offers. sweepFloor must never touch this.
    uint256 public escrowBalance;

    uint256 public totalVolumeWei;
    uint256 public totalSales;

    // ==========================================
    // EVENTS
    // ==========================================

    event Listed(uint256 indexed tokenId, address indexed seller, uint256 price);
    event Sale(uint256 indexed tokenId, address indexed seller, address indexed buyer, uint256 price);
    event Cancelled(uint256 indexed tokenId, address indexed seller);
    event OfferMade(uint256 indexed tokenId, address indexed buyer, uint256 amount, uint256 expiry);
    event OfferCancelled(uint256 indexed tokenId, address indexed buyer);
    event OfferExpired(uint256 indexed tokenId, address indexed buyer, uint256 amount);
    event OfferAccepted(uint256 indexed tokenId, address indexed seller, address indexed buyer, uint256 amount);
    event FeeRecipientUpdated(address newRecipient);
    event OfferDurationUpdated(uint256 newDuration);

    // ==========================================
    // CONSTRUCTOR
    // ==========================================

    constructor(address nftAddress, address feeRecipient_) Ownable(msg.sender) {
        require(nftAddress    != address(0), "Zero address");
        require(feeRecipient_ != address(0), "Zero address");
        nftContract     = IERC721(nftAddress);
        royaltyContract = IERC2981(nftAddress);
        feeRecipient    = feeRecipient_;
    }

    // ==========================================
    // INTERNAL: Split payment
    // Only called with specific ETH amounts - never reads address(this).balance
    // ==========================================

    function _splitPayment(uint256 tokenId, uint256 amount, address seller) internal {
        (address royaltyReceiver, uint256 royaltyAmount) = royaltyContract.royaltyInfo(tokenId, amount);
        uint256 platformFee  = (amount * feeBps) / 10000;
        uint256 sellerAmount = amount - royaltyAmount - platformFee;

        if (royaltyAmount > 0 && royaltyReceiver != address(0)) {
            (bool royaltyOk, ) = payable(royaltyReceiver).call{value: royaltyAmount}("");
            if (!royaltyOk) sellerAmount += royaltyAmount;
        }

        if (platformFee > 0) {
            (bool feeOk, ) = payable(feeRecipient).call{value: platformFee}("");
            require(feeOk, "Fee payment failed");
        }

        (bool sellerOk, ) = payable(seller).call{value: sellerAmount}("");
        require(sellerOk, "Seller payment failed");
    }

    // ==========================================
    // LISTINGS
    // ==========================================

    function listItem(uint256 tokenId, uint256 price) external {
        require(price > 0, "Price must be > 0");
        require(nftContract.ownerOf(tokenId) == msg.sender, "Not token owner");
        require(
            nftContract.isApprovedForAll(msg.sender, address(this)) ||
            nftContract.getApproved(tokenId) == address(this),
            "Marketplace not approved"
        );
        listings[tokenId] = Listing({ seller: msg.sender, price: price, active: true });
        emit Listed(tokenId, msg.sender, price);
    }

    function cancelListing(uint256 tokenId) external {
        Listing storage l = listings[tokenId];
        require(l.active, "Not listed");
        require(l.seller == msg.sender || owner() == msg.sender, "Not seller");
        l.active = false;
        emit Cancelled(tokenId, l.seller);
        // Offers on this token remain active and unaffected.
        // Buyers can still cancel their offers. Owner can still accept them.
    }

    function buyItem(uint256 tokenId) external payable nonReentrant {
        Listing storage l = listings[tokenId];
        require(l.active,                                  "Not listed");
        require(msg.value == l.price,                      "Wrong ETH amount");
        require(l.seller  != msg.sender,                   "Cannot buy own listing");
        require(nftContract.ownerOf(tokenId) == l.seller, "Seller no longer owns token");

        address seller = l.seller;
        uint256 price  = l.price;
        l.active = false;

        totalVolumeWei += price;
        totalSales     += 1;

        nftContract.safeTransferFrom(seller, msg.sender, tokenId);
        _splitPayment(tokenId, price, seller);

        emit Sale(tokenId, seller, msg.sender, price);
    }

    /**
     * @notice Buy multiple listings in one transaction.
     *
     * KEY SAFETY PROPERTY:
     *   require(msg.value == totalCost) enforces exact payment.
     *   There is zero overpayment by definition.
     *   Therefore no "refund balance" block is needed or exists.
     *   escrowBalance (offer funds) is NEVER read or touched here.
     */
    function sweepFloor(uint256[] calldata tokenIds) external payable nonReentrant {
        require(tokenIds.length > 0,   "Empty list");
        require(tokenIds.length <= 50, "Max 50 per sweep");

        // Phase 1: validate all listings and compute exact cost
        uint256 totalCost = 0;
        for (uint256 i = 0; i < tokenIds.length; i++) {
            Listing storage l = listings[tokenIds[i]];
            require(l.active,                                       "Token not listed");
            require(l.seller != msg.sender,                        "Cannot buy own listing");
            require(nftContract.ownerOf(tokenIds[i]) == l.seller, "Seller no longer owns");
            totalCost += l.price;
        }
        require(msg.value == totalCost, "Wrong total ETH");

        // Phase 2: execute - only msg.value is disbursed, escrow untouched
        for (uint256 i = 0; i < tokenIds.length; i++) {
            Listing storage l = listings[tokenIds[i]];
            address seller    = l.seller;
            uint256 price     = l.price;
            l.active          = false;

            totalVolumeWei += price;
            totalSales     += 1;

            nftContract.safeTransferFrom(seller, msg.sender, tokenIds[i]);
            _splitPayment(tokenIds[i], price, seller);

            emit Sale(tokenIds[i], seller, msg.sender, price);
        }
        // No balance drain. escrowBalance is safe.
    }

    // ==========================================
    // OFFERS
    // ==========================================

    /**
     * @notice Place an offer on any token (listed or unlisted).
     *         ETH is locked in escrow until: accepted, cancelled, or expired.
     *         Making a new offer on the same token refunds the previous one first.
     */
    function makeOffer(uint256 tokenId) external payable nonReentrant {
        require(msg.value > 0, "Offer must be > 0");

        Offer storage existing = offers[tokenId][msg.sender];

        // Refund previous offer for same token if active
        if (existing.active && existing.amount > 0) {
            uint256 refund   = existing.amount;
            existing.active  = false;
            existing.amount  = 0;
            escrowBalance   -= refund;
            (bool ok, ) = payable(msg.sender).call{value: refund}("");
            require(ok, "Refund of previous offer failed");
        }

        uint256 expiry = block.timestamp + offerDuration;

        offers[tokenId][msg.sender] = Offer({
            buyer:  msg.sender,
            amount: msg.value,
            expiry: expiry,
            active: true
        });

        escrowBalance += msg.value;

        bool found = false;
        for (uint256 i = 0; i < offerors[tokenId].length; i++) {
            if (offerors[tokenId][i] == msg.sender) { found = true; break; }
        }
        if (!found) offerors[tokenId].push(msg.sender);

        emit OfferMade(tokenId, msg.sender, msg.value, expiry);
    }

    /**
     * @notice Cancel your own offer and get ETH back.
     *         Works at any time - whether or not the listing is active.
     */
    function cancelOffer(uint256 tokenId) external nonReentrant {
        Offer storage o = offers[tokenId][msg.sender];
        require(o.active, "No active offer");

        uint256 refund = o.amount;
        o.active = false;
        o.amount = 0;
        escrowBalance -= refund;

        (bool ok, ) = payable(msg.sender).call{value: refund}("");
        require(ok, "Refund failed");

        emit OfferCancelled(tokenId, msg.sender);
    }

    /**
     * @notice Trigger expiry refund on an offer past its deadline.
     *         Anyone can call - funds always go to the original buyer.
     */
    function expireOffer(uint256 tokenId, address buyer) external nonReentrant {
        Offer storage o = offers[tokenId][buyer];
        require(o.active,                   "No active offer");
        require(block.timestamp > o.expiry, "Offer not yet expired");

        uint256 refund = o.amount;
        o.active = false;
        o.amount = 0;
        escrowBalance -= refund;

        (bool ok, ) = payable(buyer).call{value: refund}("");
        require(ok, "Expiry refund failed");

        emit OfferExpired(tokenId, buyer, refund);
    }

    /**
     * @notice Accept an offer as the token owner.
     *         Works whether or not the token is currently listed.
     *         Expired offers are rejected - buyer must re-offer.
     */
    function acceptOffer(uint256 tokenId, address buyer) external nonReentrant {
        require(nftContract.ownerOf(tokenId) == msg.sender, "Not token owner");
        require(
            nftContract.isApprovedForAll(msg.sender, address(this)) ||
            nftContract.getApproved(tokenId) == address(this),
            "Marketplace not approved"
        );

        Offer storage o = offers[tokenId][buyer];
        require(o.active,                    "No active offer from this buyer");
        require(o.amount > 0,                "Zero offer");
        require(block.timestamp <= o.expiry, "Offer expired - ask buyer to re-offer");

        uint256 amount = o.amount;
        o.active = false;
        o.amount = 0;
        escrowBalance -= amount;

        totalVolumeWei += amount;
        totalSales     += 1;

        if (listings[tokenId].active && listings[tokenId].seller == msg.sender) {
            listings[tokenId].active = false;
        }

        nftContract.safeTransferFrom(msg.sender, buyer, tokenId);
        _splitPayment(tokenId, amount, msg.sender);

        emit OfferAccepted(tokenId, msg.sender, buyer, amount);
    }

    // ==========================================
    // VIEW FUNCTIONS
    // ==========================================

    function getListing(uint256 tokenId) external view returns (
        address seller, uint256 price, bool active
    ) {
        Listing memory l = listings[tokenId];
        return (l.seller, l.price, l.active);
    }

    function getOffer(uint256 tokenId, address buyer) external view returns (
        uint256 amount, bool active
    ) {
        Offer memory o = offers[tokenId][buyer];
        return (o.amount, o.active);
    }

    function getOfferDetails(uint256 tokenId, address buyer) external view returns (
        uint256 amount, uint256 expiry, bool active, bool isExpired
    ) {
        Offer memory o = offers[tokenId][buyer];
        return (o.amount, o.expiry, o.active, block.timestamp > o.expiry);
    }

    function getOffersForToken(uint256 tokenId) external view returns (
        address[] memory buyers,
        uint256[] memory amounts
    ) {
        address[] memory allOfferors = offerors[tokenId];
        uint256 count = 0;
        for (uint256 i = 0; i < allOfferors.length; i++) {
            Offer memory o = offers[tokenId][allOfferors[i]];
            if (o.active && block.timestamp <= o.expiry) count++;
        }
        buyers  = new address[](count);
        amounts = new uint256[](count);
        uint256 idx = 0;
        for (uint256 i = 0; i < allOfferors.length; i++) {
            Offer memory o = offers[tokenId][allOfferors[i]];
            if (o.active && block.timestamp <= o.expiry) {
                buyers[idx]  = allOfferors[i];
                amounts[idx] = o.amount;
                idx++;
            }
        }
    }

    function getActiveListings(uint256[] calldata tokenIds) external view returns (
        uint256[] memory ids,
        address[] memory sellers,
        uint256[] memory prices
    ) {
        uint256 count = 0;
        for (uint256 i = 0; i < tokenIds.length; i++) {
            if (listings[tokenIds[i]].active) count++;
        }
        ids     = new uint256[](count);
        sellers = new address[](count);
        prices  = new uint256[](count);
        uint256 idx = 0;
        for (uint256 i = 0; i < tokenIds.length; i++) {
            Listing memory l = listings[tokenIds[i]];
            if (l.active) {
                ids[idx]     = tokenIds[i];
                sellers[idx] = l.seller;
                prices[idx]  = l.price;
                idx++;
            }
        }
    }

    // ==========================================
    // ADMIN
    // ==========================================

    function setFeeRecipient(address newRecipient) external onlyOwner {
        require(newRecipient != address(0), "Zero address");
        feeRecipient = newRecipient;
        emit FeeRecipientUpdated(newRecipient);
    }

    function setFeeBps(uint256 newFeeBps) external onlyOwner {
        require(newFeeBps <= 1000, "Max 10%");
        feeBps = newFeeBps;
    }

    function setOfferDuration(uint256 newDuration) external onlyOwner {
        require(newDuration >= 1 hours, "Min 1 hour");
        require(newDuration <= 30 days, "Max 30 days");
        offerDuration = newDuration;
        emit OfferDurationUpdated(newDuration);
    }

    function adminCancelListing(uint256 tokenId) external onlyOwner {
        listings[tokenId].active = false;
    }

    /**
     * @notice Force-refund a stuck offer back to the buyer.
     *         For emergency use only. ETH always goes to the original buyer.
     */
    function adminRefundOffer(uint256 tokenId, address buyer) external onlyOwner nonReentrant {
        Offer storage o = offers[tokenId][buyer];
        require(o.active,     "No active offer");
        require(o.amount > 0, "Nothing to refund");

        uint256 refund = o.amount;
        o.active = false;
        o.amount = 0;
        escrowBalance -= refund;

        (bool ok, ) = payable(buyer).call{value: refund}("");
        require(ok, "Admin refund failed");

        emit OfferCancelled(tokenId, buyer);
    }

    /**
     * @notice Withdraw any ETH that entered the contract outside of offers.
     *         escrowBalance (offer funds) is fully protected and cannot be withdrawn.
     */
    function adminWithdrawExcess() external onlyOwner nonReentrant {
        uint256 excess = address(this).balance - escrowBalance;
        require(excess > 0, "No excess ETH");
        (bool ok, ) = payable(owner()).call{value: excess}("");
        require(ok, "Withdraw failed");
    }

    receive() external payable { revert("Use buyItem() or makeOffer()"); }
}

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

pragma solidity ^0.8.20;

import {Context} from "../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.
 *
 * The initial owner is set to the address provided by the deployer. 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;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @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 {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling 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 {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _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 v5.4.0) (interfaces/IERC2981.sol)

pragma solidity >=0.6.2;

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

/**
 * @dev Interface for the NFT Royalty Standard.
 *
 * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
 * support for royalty payments across all NFT marketplaces and ecosystem participants.
 */
interface IERC2981 is IERC165 {
    /**
     * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
     * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.
     *
     * NOTE: ERC-2981 allows setting the royalty to 100% of the price. In that case all the price would be sent to the
     * royalty receiver and 0 tokens to the seller. Contracts dealing with royalty should consider empty transfers.
     */
    function royaltyInfo(
        uint256 tokenId,
        uint256 salePrice
    ) external view returns (address receiver, uint256 royaltyAmount);
}

// 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 v5.4.0) (token/ERC721/IERC721.sol)

pragma solidity >=0.6.2;

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/IERC165.sol)

pragma solidity >=0.4.16;

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

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

• No Contract Security Audit Submitted- Submit Audit Here

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ame":"getActiveListings","outputs":[{"internalType":"uint256[]","name":"ids","type":"uint256[]"},{"internalType":"address[]","name":"sellers","type":"address[]"},{"internalType":"uint256[]","name":"prices","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getListing","outputs":[{"internalType":"address","name":"seller","type":"address"},{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"bool","name":"active","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"address","name":"buyer","type":"address"}],"name":"getOffer","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bool","name":"active","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"address","name":"buyer","type":"address"}],"name":"getOfferDetails","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"bool","name":"active","type":"bool"},{"internalType":"bool","name":"isExpired","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getOffersForToken","outputs":[{"internalType":"address[]","name":"buyers","type":"address[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"price","type":"uint256"}],"name":"listItem","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"listings","outputs":[{"internalType":"address","name":"seller","type":"address"},{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"bool","name":"active","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"makeOffer","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"nftContract","outputs":[{"internalType":"contract IERC721","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"offerDuration","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"offerors","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"address","name":"","type":"address"}],"name":"offers","outputs":[{"internalType":"address","name":"buyer","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"bool","name":"active","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"royaltyContract","outputs":[{"internalType":"contract IERC2981","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"newFeeBps","type":"uint256"}],"name":"setFeeBps","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newRecipient","type":"address"}],"name":"setFeeRecipient","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newDuration","type":"uint256"}],"name":"setOfferDuration","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"}],"name":"sweepFloor","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"totalSales","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalVolumeWei","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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00000000000000000000000015f2c5d9311f7d8d41b40479ea2b5f1361865f2500000000000000000000000007497bd5298ac3698a6d4003fd541064db1369ff

-----Decoded View---------------
Arg [0] : nftAddress (address): 0x15F2C5d9311f7d8D41B40479eA2b5F1361865f25
Arg [1] : feeRecipient_ (address): 0x07497Bd5298Ac3698A6D4003FD541064Db1369fF

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 00000000000000000000000015f2c5d9311f7d8d41b40479ea2b5f1361865f25
Arg [1] : 00000000000000000000000007497bd5298ac3698a6d4003fd541064db1369ff