The Saudis Bound

// SPDX-License-Identifier: UNLICENSED
// © 2022 [XXX]. All rights reserved.
pragma solidity ^0.8.13;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import { AppStorage } from "../Structs.sol";
import "../Interfaces.sol";
import "../LibDiamond.sol";

/*
    @dev
    This contract is part of a diamond / facets implementation as described
    in EIP 2535 (https://eips.ethereum.org/EIPS/eip-2535)
*/
contract BaseFacet is Ownable, Pausable, ReentrancyGuard {
	function getState()
		internal pure returns (AppStorage storage s)
	{
		return LibDiamond.appStorage();
	}
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import { IOpenseaSeaportConduitController } from "./Interfaces.sol";

library Constants {
	string public constant NAME = "The Saudis Soulbound";
	string public constant SYMBOL = "SASB";
	uint256 public constant MATURITY_TIMESTAMP = 1657825200 + 40 days;
	IERC721 public constant SAUD_CONTRACT = IERC721(0xe21EBCD28d37A67757B9Bc7b290f4C4928A430b1);
	IOpenseaSeaportConduitController public constant OPENSEA_SEAPORT_CONDUIT_CONTROLLER = IOpenseaSeaportConduitController(0x00000000F9490004C11Cef243f5400493c00Ad63);
    address public constant OPENSEA_SEAPORT = 0x00000000006c3852cbEf3e08E8dF289169EdE581;
	address public constant ROYALTY_WALLET_ADDRESS = 0xbfE5D10F8DeDed4706C212399D74289f860ac289;
	uint96 public constant ROYALTY_BASIS_POINTS = 750;
}

// 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 ^0.8.13;

/******************************************************************************\
* Author: Nick Mudge <nick@perfectabstractions.com> (https://twitter.com/mudgen)
* EIP-2535 Diamond Standard: https://eips.ethereum.org/EIPS/eip-2535
/******************************************************************************/

import { DiamondStorage } from "../Structs.sol";
import "../LibDiamond.sol";
import { IERC165 } from "@openzeppelin/contracts/interfaces/IERC165.sol";
import "./BaseFacet.sol";

/*
    @dev
    The facet that handling all diamond related logic and can be called only by @Diamond
    This contract is part of a diamond / facets implementation as described
    in EIP 2535 (https://eips.ethereum.org/EIPS/eip-2535)
*/
contract DiamondCutAndLoupeFacet is BaseFacet, IDiamondCut, IDiamondLoupe, IERC165 {

    /// @notice Add/replace/remove any number of functions and optionally execute
    ///         a function with delegatecall
    /// @param _diamondCut Contains the facet addresses and function selectors
    /// @param _init The address of the contract or facet to execute _calldata
    /// @param _calldata A function call, including function selector and arguments
    ///                  _calldata is executed with delegatecall on _init
    function diamondCut(
        IDiamondCut.FacetCut[] calldata _diamondCut,
        address _init,
        bytes calldata _calldata
    ) external onlyOwner {
        LibDiamond.diamondCut(_diamondCut, _init, _calldata);
    }

    /// These functions are expected to be called frequently by tools.

    /// @notice Gets all facets and their selectors.
    /// @return facets_ Facet
    function facets() external override view returns (Facet[] memory facets_) {
        DiamondStorage storage ds = LibDiamond.diamondStorage();
        uint256 numFacets = ds.facetAddresses.length;
        facets_ = new Facet[](numFacets);
        for (uint256 i; i < numFacets; i++) {
            address facetAddress_ = ds.facetAddresses[i];
            facets_[i].facetAddress = facetAddress_;
            facets_[i].functionSelectors = ds.facetFunctionSelectors[facetAddress_].functionSelectors;
        }
    }

    /// @notice Gets all the function selectors provided by a facet.
    /// @param _facet The facet address.
    /// @return facetFunctionSelectors_
    function facetFunctionSelectors(address _facet) external override view returns (bytes4[] memory facetFunctionSelectors_) {
        DiamondStorage storage ds = LibDiamond.diamondStorage();
        facetFunctionSelectors_ = ds.facetFunctionSelectors[_facet].functionSelectors;
    }

    /// @notice Get all the facet addresses used by a diamond.
    /// @return facetAddresses_
    function facetAddresses() external override view returns (address[] memory facetAddresses_) {
        DiamondStorage storage ds = LibDiamond.diamondStorage();
        facetAddresses_ = ds.facetAddresses;
    }

    /// @notice Gets the facet that supports the given selector.
    /// @dev If facet is not found return address(0).
    /// @param _functionSelector The function selector.
    /// @return facetAddress_ The facet address.
    function facetAddress(bytes4 _functionSelector) external override view returns (address facetAddress_) {
        DiamondStorage storage ds = LibDiamond.diamondStorage();
        facetAddress_ = ds.selectorToFacetAndPosition[_functionSelector].facetAddress;
    }

	 // This implements ERC-165.
    function supportsInterface(bytes4 _interfaceId) external override view returns (bool) {
        DiamondStorage storage ds = LibDiamond.diamondStorage();
        return ds.supportedInterfaces[_interfaceId];
    }
}

// SPDX-License-Identifier: UNLICENSED
// © 2022 [XXX]. All rights reserved.
pragma solidity ^0.8.13;

import { IDiamondCut, IDiamondLoupe, IERC173 } from "./Interfaces.sol";
import { IERC721Metadata } from "@openzeppelin/contracts/interfaces/IERC721Metadata.sol";
import { IERC721 } from "@openzeppelin/contracts/interfaces/IERC721.sol";
import { IERC165 } from "@openzeppelin/contracts/interfaces/IERC165.sol";
import { IERC2981 } from "@openzeppelin/contracts/interfaces/IERC2981.sol";
import "./Constants.sol";
import "./facets/DiamondCutAndLoupeFacet.sol";
import "./LibDiamond.sol";

/*
    @dev
    This contract is using the very robust and innovative EIP 2535 (https://eips.ethereum.org/EIPS/eip-2535) which
    allows a contract to be organized in the most efficient way
*/
contract DuneDiamond is BaseFacet {

    constructor(address _diamondCutAndLoupeFacetAddress) {
        // adding ERC165 data
        DiamondStorage storage ds = LibDiamond.diamondStorage();
        ds.supportedInterfaces[type(IERC165).interfaceId] = true;
        ds.supportedInterfaces[type(IDiamondCut).interfaceId] = true;
        ds.supportedInterfaces[type(IDiamondLoupe).interfaceId] = true;
        ds.supportedInterfaces[type(IERC173).interfaceId] = true;
		ds.supportedInterfaces[type(IERC721).interfaceId] = true;
		ds.supportedInterfaces[type(IERC721Metadata).interfaceId] = true;
		ds.supportedInterfaces[type(IERC2981).interfaceId] = true;

		// Init appStorage
		AppStorage storage s = LibDiamond.appStorage();
		s.chapterId = 0;

		bytes4[] memory selectors = new bytes4[](6);
        selectors[0] = DiamondCutAndLoupeFacet.diamondCut.selector;
        selectors[1] = DiamondCutAndLoupeFacet.facets.selector;
        selectors[2] = DiamondCutAndLoupeFacet.facetFunctionSelectors.selector;
        selectors[3] = DiamondCutAndLoupeFacet.facetAddresses.selector;
        selectors[4] = DiamondCutAndLoupeFacet.facetAddress.selector;
		selectors[5] = DiamondCutAndLoupeFacet.supportsInterface.selector;

        LibDiamond.addFunctions(_diamondCutAndLoupeFacetAddress, selectors);
    }

    // =========== Lifecycle ===========

    // Find facet for function that is called and execute the
    // function if a facet is found and return any value.
    // To learn more about this implementation read EIP 2535
    fallback() external payable {
        address facet = LibDiamond.diamondStorage().selectorToFacetAndPosition[msg.sig].facetAddress;
        require(facet != address(0), "Diamond: Function does not exist");
        assembly {
            calldatacopy(0, 0, calldatasize())
            let result := delegatecall(gas(), facet, 0, calldatasize(), 0, 0)
            returndatacopy(0, 0, returndatasize())
            switch result
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return (0, returndatasize())
            }
        }
    }

    /*
        @dev
        To enable receiving ETH
    */
    receive() external payable {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)

pragma solidity ^0.8.0;

import "../utils/introspection/IERC165.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)

pragma solidity ^0.8.0;

import "../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.
 *
 * _Available since v4.5._
 */
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.
     */
    function royaltyInfo(uint256 tokenId, uint256 salePrice)
        external
        view
        returns (address receiver, uint256 royaltyAmount);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 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 ERC721 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: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * 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 caller.
     *
     * 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 v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

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

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// SPDX-License-Identifier: UNLICENSED
// © 2022 [XXX]. All rights reserved.
pragma solidity ^0.8.13;

/******************************************************************************\
* Author: Nick Mudge <nick@perfectabstractions.com> (https://twitter.com/mudgen)
* EIP-2535 Diamond Standard: https://eips.ethereum.org/EIPS/eip-2535
/******************************************************************************/

interface IDiamondCut {
    enum FacetCutAction {Add, Replace, Remove}
    // Add=0, Replace=1, Remove=2

    struct FacetCut {
        address facetAddress;
        FacetCutAction action;
        bytes4[] functionSelectors;
    }

    /// @notice Add/replace/remove any number of functions and optionally execute
    ///         a function with delegatecall
    /// @param _diamondCut Contains the facet addresses and function selectors
    /// @param _init The address of the contract or facet to execute _calldata
    /// @param _calldata A function call, including function selector and arguments
    ///                  _calldata is executed with delegatecall on _init
    function diamondCut(
        FacetCut[] calldata _diamondCut,
        address _init,
        bytes calldata _calldata
    ) external;

    event DiamondCut(FacetCut[] _diamondCut, address _init, bytes _calldata);
}

// A loupe is a small magnifying glass used to look at diamonds.
// These functions look at diamonds
interface IDiamondLoupe {
    /// These functions are expected to be called frequently
    /// by tools.

    struct Facet {
        address facetAddress;
        bytes4[] functionSelectors;
    }

    /// @notice Gets all facet addresses and their four byte function selectors.
    /// @return facets_ Facet
    function facets() external view returns (Facet[] memory facets_);

    /// @notice Gets all the function selectors supported by a specific facet.
    /// @param _facet The facet address.
    /// @return facetFunctionSelectors_
    function facetFunctionSelectors(address _facet) external view returns (bytes4[] memory facetFunctionSelectors_);

    /// @notice Get all the facet addresses used by a diamond.
    /// @return facetAddresses_
    function facetAddresses() external view returns (address[] memory facetAddresses_);

    /// @notice Gets the facet that supports the given selector.
    /// @dev If facet is not found return address(0).
    /// @param _functionSelector The function selector.
    /// @return facetAddress_ The facet address.
    function facetAddress(bytes4 _functionSelector) external view returns (address facetAddress_);
}

interface IOpenseaSeaportConduitController {
    function getConduit(bytes32 conduitKey) external view returns (address conduit, bool exists);
    function getChannelStatus(address conduit, address channel) external view returns (bool isOpen);
}

/// @title ERC-173 Contract Ownership Standard
///  Note: the ERC-165 identifier for this interface is 0x7f5828d0
/* is ERC165 */
interface IERC173 {
    /// @dev This emits when ownership of a contract changes.
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /// @notice Get the address of the owner
    /// @return owner_ The address of the owner.
    function owner() external view returns (address owner_);

    /// @notice Set the address of the new owner of the contract
    /// @dev Set _newOwner to address(0) to renounce any ownership.
    /// @param _newOwner The address of the new owner of the contract
    function transferOwnership(address _newOwner) external;
}

// SPDX-License-Identifier: UNLICENSED
// © 2022 [XXX]. All rights reserved.
pragma solidity ^0.8.13;

/******************************************************************************\
* Author: Nick Mudge <nick@perfectabstractions.com> (https://twitter.com/mudgen)
* EIP-2535 Diamond Standard: https://eips.ethereum.org/EIPS/eip-2535
/******************************************************************************/

import "./Interfaces.sol";
import { DiamondStorage, AppStorage } from "./Structs.sol";

library LibDiamond {

    // ==================== Diamond Constants ====================

    bytes32 constant DIAMOND_STORAGE_POSITION = keccak256("diamond.standard.diamond.storage");
    bytes32 constant APP_STORAGE_POSITION = keccak256("diamond.standard.app.storage");

    event DiamondCut(IDiamondCut.FacetCut[] _diamondCut, address _init, bytes _calldata);

    function diamondStorage() internal pure returns (DiamondStorage storage ds) {
        bytes32 position = DIAMOND_STORAGE_POSITION;
        assembly {
            ds.slot := position
        }
    }

    function appStorage() internal pure returns (AppStorage storage _as) {
        bytes32 position = APP_STORAGE_POSITION;
        assembly {
            _as.slot := position
        }
    }

    // Internal function version of diamondCut
    function diamondCut(
        IDiamondCut.FacetCut[] memory _diamondCut,
        address _init,
        bytes memory _calldata
    ) internal {
        for (uint256 facetIndex; facetIndex < _diamondCut.length; facetIndex++) {
            IDiamondCut.FacetCutAction action = _diamondCut[facetIndex].action;
            if (action == IDiamondCut.FacetCutAction.Add) {
                addFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors);
            } else if (action == IDiamondCut.FacetCutAction.Replace) {
                replaceFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors);
            } else if (action == IDiamondCut.FacetCutAction.Remove) {
                removeFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors);
            } else {
                revert("LibDiamondCut: Incorrect FacetCutAction");
            }
        }
        emit DiamondCut(_diamondCut, _init, _calldata);
        initializeDiamondCut(_init, _calldata);
    }

    function addFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal {
        require(_functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut");
        DiamondStorage storage ds = diamondStorage();
        // uint16 selectorCount = uint16(diamondStorage().selectors.length);
        require(_facetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)");
        uint16 selectorPosition = uint16(ds.facetFunctionSelectors[_facetAddress].functionSelectors.length);
        // add new facet address if it does not exist
        if (selectorPosition == 0) {
            addFacet(ds, _facetAddress);
        }
        for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++) {
            bytes4 selector = _functionSelectors[selectorIndex];
            address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress;
            require(oldFacetAddress == address(0), "LibDiamondCut: Can't add function that already exists");
            addFunction(ds, selector, selectorPosition, _facetAddress);
            selectorPosition++;
        }
    }

    function replaceFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal {
        require(_functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut");
        DiamondStorage storage ds = diamondStorage();
        require(_facetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)");
        uint16 selectorPosition = uint16(ds.facetFunctionSelectors[_facetAddress].functionSelectors.length);
        // add new facet address if it does not exist
        if (selectorPosition == 0) {
            addFacet(ds, _facetAddress);
        }
        for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++) {
            bytes4 selector = _functionSelectors[selectorIndex];
            address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress;
            require(oldFacetAddress != _facetAddress, "LibDiamondCut: Can't replace function with same function");
            removeFunction(ds, oldFacetAddress, selector);
            addFunction(ds, selector, selectorPosition, _facetAddress);
            selectorPosition++;
        }
    }

    function removeFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal {
        require(_functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut");
        DiamondStorage storage ds = diamondStorage();
        // if function does not exist then do nothing and return
        require(_facetAddress == address(0), "LibDiamondCut: Remove facet address must be address(0)");
        for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++) {
            bytes4 selector = _functionSelectors[selectorIndex];
            address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress;
            removeFunction(ds, oldFacetAddress, selector);
        }
    }

	function addFacet(DiamondStorage storage ds, address _facetAddress) internal {
        enforceHasContractCode(_facetAddress, "LibDiamondCut: New facet has no code");
        ds.facetFunctionSelectors[_facetAddress].facetAddressPosition = uint16(ds.facetAddresses.length);
        ds.facetAddresses.push(_facetAddress);
    }

	function addFunction(DiamondStorage storage ds, bytes4 _selector, uint16 _selectorPosition, address _facetAddress) internal {
        ds.selectorToFacetAndPosition[_selector].functionSelectorPosition = _selectorPosition;
        ds.facetFunctionSelectors[_facetAddress].functionSelectors.push(_selector);
        ds.selectorToFacetAndPosition[_selector].facetAddress = _facetAddress;
    }

    function removeFunction(DiamondStorage storage ds, address _facetAddress, bytes4 _selector) internal {
        require(_facetAddress != address(0), "LibDiamondCut: Can't remove function that doesn't exist");
        // an immutable function is a function defined directly in a diamond
        require(_facetAddress != address(this), "LibDiamondCut: Can't remove immutable function");
        // replace selector with last selector, then delete last selector
        uint256 selectorPosition = ds.selectorToFacetAndPosition[_selector].functionSelectorPosition;
        uint256 lastSelectorPosition = ds.facetFunctionSelectors[_facetAddress].functionSelectors.length - 1;
        // if not the same then replace _selector with lastSelector
        if (selectorPosition != lastSelectorPosition) {
            bytes4 lastSelector = ds.facetFunctionSelectors[_facetAddress].functionSelectors[lastSelectorPosition];
            ds.facetFunctionSelectors[_facetAddress].functionSelectors[selectorPosition] = lastSelector;
            ds.selectorToFacetAndPosition[lastSelector].functionSelectorPosition = uint16(selectorPosition);
        }
        // delete the last selector
        ds.facetFunctionSelectors[_facetAddress].functionSelectors.pop();
        delete ds.selectorToFacetAndPosition[_selector];

        // if no more selectors for facet address then delete the facet address
        if (lastSelectorPosition == 0) {
            // replace facet address with last facet address and delete last facet address
            uint256 lastFacetAddressPosition = ds.facetAddresses.length - 1;
            uint256 facetAddressPosition = ds.facetFunctionSelectors[_facetAddress].facetAddressPosition;
            if (facetAddressPosition != lastFacetAddressPosition) {
                address lastFacetAddress = ds.facetAddresses[lastFacetAddressPosition];
                ds.facetAddresses[facetAddressPosition] = lastFacetAddress;
                ds.facetFunctionSelectors[lastFacetAddress].facetAddressPosition = uint16(facetAddressPosition);
            }
            ds.facetAddresses.pop();
            delete ds.facetFunctionSelectors[_facetAddress].facetAddressPosition;
        }
    }

    function initializeDiamondCut(address _init, bytes memory _calldata) internal {
        if (_init == address(0)) {
            require(_calldata.length == 0, "LibDiamondCut: _init is address(0) but_calldata is not empty");
        } else {
            require(_calldata.length > 0, "LibDiamondCut: _calldata is empty but _init is not address(0)");
            if (_init != address(this)) {
                enforceHasContractCode(_init, "LibDiamondCut: _init address has no code");
            }
            (bool success, bytes memory error) = _init.delegatecall(_calldata);
            if (!success) {
                if (error.length > 0) {
                    // bubble up the error
                    revert(string(error));
                } else {
                    revert("LibDiamondCut: _init function reverted");
                }
            }
        }
    }

    function enforceHasContractCode(address _contract, string memory _errorMessage) internal view {
        uint256 contractSize;
        assembly {
            contractSize := extcodesize(_contract)
        }
        require(contractSize > 0, _errorMessage);
    }
}

// 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 v4.4.1 (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() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

        _;

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

// SPDX-License-Identifier: UNLICENSED
// © 2022 [XXX]. All rights reserved.
pragma solidity ^0.8.13;

struct Chapter {
	string name;
	string description;
	uint8 attributeTypeCount;

	// attributeTypeId => attributeType
	mapping(uint8 => Attribute.Type) attributeTypes;

	// tokenId => (attributeTypeId => Bitfield of attribute available)
	mapping(
		uint256 => mapping(
			uint8 => uint256
		)
	) availableAttributes;

	// tokenId => (attributeTypeId => attributeId active)
	mapping(
		uint256 => mapping(
			uint8 => uint8
		)
	) activeAttributes;
}

library Attribute {
	struct Selection {
		string name;
		string description;
		string dataUri;
	}

	struct Type {
		string name;
		string description;
		uint8 zIndex;
		bool visible;
		mapping(uint8 => Selection) selections;
	}
}

struct AppStorage {
	// =============================================================================
	// Artwork
	// =============================================================================

	// attributeTypeId reserved for chapters 
	uint8 chapterId;

	mapping(uint8 => Chapter) chapters;

	// attributeTypeId => attributeType
	mapping(uint8 => Attribute.Type) attributeTypes;

	// tokenId => (attributeTypeId => Bitfield of attribute available)
	mapping(
		uint256 => mapping(
			uint8 => uint256
		)
	) availableAttributes;

	// tokenId => (attributeTypeId => attributeId active)
	mapping(
		uint256 => mapping(
			uint8 => uint8
		)
	) activeAttributes;
	
	string tokenBaseExternalUrl;
	string contractLevelImageUrl;
	string contractLevelExternalUrl;

	// =============================================================================
	// Royalty
	// =============================================================================
	address royaltyWalletAddress;
	uint96 royaltyBasisPoints;
}

struct FacetAddressAndPosition {
	address facetAddress;
	uint16 functionSelectorPosition; // position in facetFunctionSelectors.functionSelectors array
}

struct FacetFunctionSelectors {
	bytes4[] functionSelectors;
	uint16 facetAddressPosition; // position of facetAddress in facetAddresses array
}

struct DiamondStorage {
	// maps function selector to the facet address and
	// the position of the selector in the facetFunctionSelectors.selectors array
	mapping(bytes4 => FacetAddressAndPosition) selectorToFacetAndPosition;
	// maps facet addresses to function selectors
	mapping(address => FacetFunctionSelectors) facetFunctionSelectors;
	// facet addresses
	address[] facetAddresses;
	// Used to query if a contract implements an interface.
	// Used to implement ERC-165.
	mapping(bytes4 => bool) supportedInterfaces;
}

{
  "compilationTarget": {
    "contracts/DuneDiamond.sol": "DuneDiamond"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 99999
  },
  "remappings": []
}