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

import "./LockDealNFTInternal.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

/// @title LockDealNFT contract
/// @notice Implements a non-fungible token (NFT) contract for locking deals
contract LockDealNFT is LockDealNFTInternal, IERC721Receiver {
    constructor(address _vaultManager, string memory _baseURI) ERC721("LockDealNFT", "LDNFT") {
        _notZeroAddress(_vaultManager);
        vaultManager = IVaultManager(_vaultManager);
        approvedContracts[address(this)] = true;
        baseURI = _baseURI;
    }

    function mintForProvider(
        address owner,
        IProvider provider
    ) external firewallProtected onlyApprovedContract(address(provider)) notZeroAddress(owner) returns (uint256 poolId) {
        poolId = _mint(owner, provider);
    }

    function mintAndTransfer(
        address owner,
        address token,
        uint256 amount,
        IProvider provider
    )
        external
        firewallProtected
        onlyApprovedContract(address(provider))
        notZeroAddress(owner)
        notZeroAddress(token)
        notZeroAmount(amount)
        returns (uint256 poolId)
    {
        poolId = _mint(owner, provider);
        IERC20(token).approve(address(vaultManager), amount);
        poolIdToVaultId[poolId] = vaultManager.depositByToken(token, amount);
    }

    function safeMintAndTransfer(
        address owner,
        address token,
        address from,
        uint256 amount,
        IProvider provider,
        bytes calldata data
    )
        external
        firewallProtected
        onlyApprovedContract(address(provider))
        notZeroAddress(owner)
        notZeroAddress(token)
        notZeroAmount(amount)
        returns (uint256 poolId)
    {
        poolId = _mint(owner, provider);
        poolIdToVaultId[poolId] = vaultManager.safeDeposit(token, amount, from, data);
    }

    function cloneVaultId(
        uint256 destinationPoolId,
        uint256 sourcePoolId
    ) external firewallProtected onlyApprovedContract(msg.sender) validPoolId(destinationPoolId) validPoolId(sourcePoolId) {
        poolIdToVaultId[destinationPoolId] = poolIdToVaultId[sourcePoolId];
    }

    /// @dev Sets the approved status of a contract
    /// @param contractAddress The address of the contract
    /// @param status The new approved status (true or false)
    function setApprovedContract(address contractAddress, bool status) external onlyOwner onlyContract(contractAddress) {
        approvedContracts[contractAddress] = status;
        emit ContractApproved(contractAddress, status);
    }

    function approvePoolTransfers(bool status) external {
        require(approvedPoolUserTransfers[msg.sender] != status, "status is the same as before");
        approvedPoolUserTransfers[msg.sender] = status;
    }

    ///@dev withdraw implementation
    function onERC721Received(
        address,
        address from,
        uint256 poolId,
        bytes calldata data
    ) external override firewallProtected returns (bytes4) {
        require(msg.sender == address(this), "invalid nft contract");
        _handleReturn(poolId, from, data.length > 0 ? _split(poolId, from, data) : _withdraw(from, poolId));
        return IERC721Receiver.onERC721Received.selector;
    }

    function updateAllMetadata() external onlyOwner {
        emit MetadataUpdate(type(uint256).max);
    }

    function transferFrom(address from, address to, uint256 tokenId) public override(ERC721, IERC721) {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, "");
    }

    function setBaseURI(string memory newBaseURI) external onlyOwner {
        require(
            keccak256(abi.encodePacked(baseURI)) != keccak256(abi.encodePacked(newBaseURI)),
            "can't set the same baseURI"
        );
        string memory oldBaseURI = baseURI;
        baseURI = newBaseURI;
        emit BaseURIChanged(oldBaseURI, newBaseURI);
    }
}

// SPDX-License-Identifier: UNLICENSED
// See LICENSE file for full license text.
// Copyright (c) Ironblocks 2024
pragma solidity ^0.8;

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

/**
 * @title Firewall Consumer
 * @author David Benchimol @ Ironblocks
 * @dev This contract is a parent contract that can be used to add firewall protection to any contract.
 *
 * The contract must initializes with the firewall contract disabled, and the deployer
 * as the firewall admin.
 *
 */
contract FirewallConsumer is FirewallConsumerBase(address(0), msg.sender) {
}

// SPDX-License-Identifier: UNLICENSED
// See LICENSE file for full license text.
// Copyright (c) Ironblocks 2024
pragma solidity ^0.8;

import {ERC165Checker} from "@openzeppelin/contracts/utils/introspection/ERC165Checker.sol";
import {Address} from "@openzeppelin/contracts/utils/Address.sol";
import {Context} from "@openzeppelin/contracts/utils/Context.sol";
import {IFirewall} from "./interfaces/IFirewall.sol";
import {IFirewallConsumer} from "./interfaces/IFirewallConsumer.sol";

/**
 * @title Firewall Consumer Base Contract
 * @author David Benchimol @ Ironblocks
 * @dev This contract is a parent contract that can be used to add firewall protection to any contract.
 *
 * The contract must define a firewall contract which will manage the policies that are applied to the contract.
 * It also must define a firewall admin which will be able to add and remove policies.
 *
 */
contract FirewallConsumerBase is IFirewallConsumer, Context {

    // This slot is used to store the firewall address
    bytes32 private constant FIREWALL_STORAGE_SLOT = bytes32(uint256(keccak256("eip1967.firewall")) - 1);

    // This slot is used to store the firewall admin address
    bytes32 private constant FIREWALL_ADMIN_STORAGE_SLOT = bytes32(uint256(keccak256("eip1967.firewall.admin")) - 1);

    // This slot is used to store the new firewall admin address (when changing admin)
    bytes32 private constant NEW_FIREWALL_ADMIN_STORAGE_SLOT = bytes32(uint256(keccak256("eip1967.new.firewall.admin")) - 1);
    bytes4 private constant SUPPORTS_APPROVE_VIA_SIGNATURE_INTERFACE_ID = bytes4(0x0c908cff); // sighash of approveCallsViaSignature

    // This slot is special since it's used for mappings and not a single value
    bytes32 private constant APPROVED_TARGETS_MAPPING_SLOT = bytes32(uint256(keccak256("eip1967.approved.targets")) - 1);

    event FirewallAdminUpdated(address newAdmin);
    event FirewallUpdated(address newFirewall);

    /**
     * @dev modifier that will run the preExecution and postExecution hooks of the firewall, applying each of
     * the subscribed policies.
     *
     * NOTE: Applying this modifier on functions that exit execution flow by an inline assmebly "return" call will
     * prevent the postExecution hook from running - breaking the protection provided by the firewall.
     * If you have any questions, please refer to the Firewall's documentation and/or contact our support.
     */
    modifier firewallProtected() {
        address firewall = _getAddressBySlot(FIREWALL_STORAGE_SLOT);
        if (firewall == address(0)) {
            _;
            return;
        }
        uint256 value = _msgValue();
        IFirewall(firewall).preExecution(_msgSender(), _msgData(), value);
        _;
        IFirewall(firewall).postExecution(_msgSender(), _msgData(), value);
    }

    /**
     * @dev modifier that will run the preExecution and postExecution hooks of the firewall, applying each of
     * the subscribed policies. Allows passing custom data to the firewall, not necessarily msg.data.
     * Useful for checking internal function calls
     *
     * @param data custom data to be passed to the firewall
     * NOTE: Using this modifier affects the data that is passed to the firewall, and as such it is mainly meant
     * to be used by internal functions, and only in conjuction with policies that whose protection strategy
     * requires this data.
     *
     * Using this modifier incorrectly may result in unexpected behavior.
     *
     * If you have any questions on how or when to use this modifier, please refer to the Firewall's documentation
     * and/or contact our support.
     *
     * NOTE: Applying this modifier on functions that exit execution flow by an inline assmebly "return" call will
     * prevent the postExecution hook from running - breaking the protection provided by the firewall.
     * If you have any questions, please refer to the Firewall's documentation and/or contact our support.
     */
    modifier firewallProtectedCustom(bytes memory data) {
        address firewall = _getAddressBySlot(FIREWALL_STORAGE_SLOT);
        if (firewall == address(0)) {
            _;
            return;
        }
        uint256 value = _msgValue();
        IFirewall(firewall).preExecution(_msgSender(), data, value);
        _;
        IFirewall(firewall).postExecution(_msgSender(), data, value);
    }

    /**
     * @dev identical to the rest of the modifiers in terms of logic, but makes it more
     * aesthetic when all you want to pass are signatures/unique identifiers.
     *
     * @param selector unique identifier for the function
     *
     * NOTE: Using this modifier affects the data that is passed to the firewall, and as such it is mainly to
     * be used by policies that whose protection strategy relies on the function's signature hahs.
     *
     * Using this modifier incorrectly may result in unexpected behavior.
     *
     * If you have any questions on how or when to use this modifier, please refer to the Firewall's documentation
     * and/or contact our support.
     *
     * NOTE: Applying this modifier on functions that exit execution flow by an inline assmebly "return" call will
     * prevent the postExecution hook from running - breaking the protection provided by the firewall.
     * If you have any questions, please refer to the Firewall's documentation and/or contact our support.
     */
    modifier firewallProtectedSig(bytes4 selector) {
        address firewall = _getAddressBySlot(FIREWALL_STORAGE_SLOT);
        if (firewall == address(0)) {
            _;
            return;
        }
        uint256 value = _msgValue();
        IFirewall(firewall).preExecution(_msgSender(), abi.encodePacked(selector), value);
        _;
        IFirewall(firewall).postExecution(_msgSender(), abi.encodePacked(selector), value);
    }

    /**
     * @dev modifier that will run the preExecution and postExecution hooks of the firewall invariant policy,
     * applying the subscribed invariant policy
     *
     * NOTE: Applying this modifier on functions that exit execution flow by an inline assmebly "return" call will
     * prevent the postExecution hook from running - breaking the protection provided by the firewall.
     * If you have any questions, please refer to the Firewall's documentation and/or contact our support.
     */
    modifier invariantProtected() {
        address firewall = _getAddressBySlot(FIREWALL_STORAGE_SLOT);
        if (firewall == address(0)) {
            _;
            return;
        }
        uint256 value = _msgValue();
        bytes32[] memory storageSlots = IFirewall(firewall).preExecutionPrivateInvariants(_msgSender(), _msgData(), value);
        bytes32[] memory preValues = _readStorage(storageSlots);
        _;
        bytes32[] memory postValues = _readStorage(storageSlots);
        IFirewall(firewall).postExecutionPrivateInvariants(_msgSender(), _msgData(), value, preValues, postValues);
    }


    /**
     * @dev modifier asserting that the target is approved
     * @param target address of the target
     */
    modifier onlyApprovedTarget(address target) {
        // We use the same logic that solidity uses for mapping locations, but we add a pseudorandom
        // constant "salt" instead of a constant placeholder so that there are no storage collisions
        // if adding this to an upgradeable contract implementation
        bytes32 _slot = keccak256(abi.encode(APPROVED_TARGETS_MAPPING_SLOT, target));
        bool isApprovedTarget = _getValueBySlot(_slot) != bytes32(0);
        require(isApprovedTarget, "FirewallConsumer: Not approved target");
        require(ERC165Checker.supportsERC165InterfaceUnchecked(target, SUPPORTS_APPROVE_VIA_SIGNATURE_INTERFACE_ID));
        _;
    }

    /**
     * @dev modifier similar to onlyOwner, but for the firewall admin.
     */
    modifier onlyFirewallAdmin() {
        require(msg.sender == _getAddressBySlot(FIREWALL_ADMIN_STORAGE_SLOT), "FirewallConsumer: not firewall admin");
        _;
    }

    /**
     * @dev Initializes a contract protected by a firewall, with a firewall address and a firewall admin.
     */
    constructor(
        address _firewall,
        address _firewallAdmin
    ) {
        _setAddressBySlot(FIREWALL_STORAGE_SLOT, _firewall);
        _setAddressBySlot(FIREWALL_ADMIN_STORAGE_SLOT, _firewallAdmin);
    }

    /**
     * @dev Allows calling an approved external target before executing a method.
     *
     * This can be used for multiple purposes, but the initial one is to call `approveCallsViaSignature` before
     * executing a function, allowing synchronous transaction approvals.
     *
     * @param target address of the target
     * @param targetPayload payload to be sent to the target
     * @param data data to be executed after the target call
     */
    function safeFunctionCall(
        address target,
        bytes calldata targetPayload,
        bytes calldata data
    ) external payable onlyApprovedTarget(target) {
        (bool success, ) = target.call(targetPayload);
        require(success);
        require(msg.sender == _msgSender(), "FirewallConsumer: No meta transactions");
        Address.functionDelegateCall(address(this), data);
    }

    /**
     * @dev Allows firewall admin to set approved targets.
     * IMPORTANT: Only set approved target if you know what you're doing. Anyone can cause this contract
     * to send any data to an approved target.
     *
     * @param target address of the target
     * @param status status of the target
     */
    function setApprovedTarget(address target, bool status) external onlyFirewallAdmin {
        bytes32 _slot = keccak256(abi.encode(APPROVED_TARGETS_MAPPING_SLOT, target));
        assembly {
            sstore(_slot, status)
        }
    }

    /**
     * @dev View function for the firewall admin
     */
    function firewallAdmin() external override view returns (address) {
        return _getAddressBySlot(FIREWALL_ADMIN_STORAGE_SLOT);
    }

    /**
     * @dev Admin only function allowing the consumers admin to set the firewall address.
     * @param _firewall address of the firewall
     */
    function setFirewall(address _firewall) external onlyFirewallAdmin {
        _setAddressBySlot(FIREWALL_STORAGE_SLOT, _firewall);
        emit FirewallUpdated(_firewall);
    }

    /**
     * @dev Admin only function, sets new firewall admin. New admin must accept.
     * @param _firewallAdmin address of the new firewall admin
     */
    function setFirewallAdmin(address _firewallAdmin) external onlyFirewallAdmin {
        require(_firewallAdmin != address(0), "FirewallConsumer: zero address");
        _setAddressBySlot(NEW_FIREWALL_ADMIN_STORAGE_SLOT, _firewallAdmin);
    }

    /**
     * @dev Accept the role as firewall admin.
     */
    function acceptFirewallAdmin() external {
        require(msg.sender == _getAddressBySlot(NEW_FIREWALL_ADMIN_STORAGE_SLOT), "FirewallConsumer: not new admin");
        _setAddressBySlot(FIREWALL_ADMIN_STORAGE_SLOT, msg.sender);
        emit FirewallAdminUpdated(msg.sender);
    }

    /**
     * @dev Internal helper funtion to get the msg.value
     * @return value of the msg.value
     */
    function _msgValue() internal view returns (uint256 value) {
        // We do this because msg.value can only be accessed in payable functions.
        assembly {
            value := callvalue()
        }
    }

    /**
     * @dev Internal helper function to read storage slots
     * @param storageSlots array of storage slots
     */
    function _readStorage(bytes32[] memory storageSlots) internal view returns (bytes32[] memory) {
        uint256 slotsLength = storageSlots.length;
        bytes32[] memory values = new bytes32[](slotsLength);

        for (uint256 i = 0; i < slotsLength; i++) {
            bytes32 slotValue = _getValueBySlot(storageSlots[i]);
            values[i] = slotValue;
        }
        return values;
    }

    /**
     * @dev Internal helper function to set an address in a storage slot
     * @param _slot storage slot
     * @param _address address to be set
     */
    function _setAddressBySlot(bytes32 _slot, address _address) internal {
        assembly {
            sstore(_slot, _address)
        }
    }

    /**
     * @dev Internal helper function to get an address from a storage slot
     * @param _slot storage slot
     * @return _address from the storage slot
     */
    function _getAddressBySlot(bytes32 _slot) internal view returns (address _address) {
        assembly {
            _address := sload(_slot)
        }
    }

    /**
     * @dev Internal helper function to get a value from a storage slot
     * @param _slot storage slot
     * @return _value from the storage slot
     */
    function _getValueBySlot(bytes32 _slot) internal view returns (bytes32 _value) {
        assembly {
            _value := sload(_slot)
        }
    }
}

// SPDX-License-Identifier: UNLICENSED
// See LICENSE file for full license text.
// Copyright (c) Ironblocks 2024
pragma solidity ^0.8;

interface IFirewall {
    function preExecution(address sender, bytes memory data, uint256 value) external;
    function postExecution(address sender, bytes memory data, uint256 value) external;
    function preExecutionPrivateInvariants(address sender, bytes memory data, uint256 value) external returns (bytes32[] calldata);
    function postExecutionPrivateInvariants(
        address sender,
        bytes memory data,
        uint256 value,
        bytes32[] calldata preValues,
        bytes32[] calldata postValues
    ) external;
}

// SPDX-License-Identifier: UNLICENSED
// See LICENSE file for full license text.
// Copyright (c) Ironblocks 2024
pragma solidity ^0.8;

interface IFirewallConsumer {
    function firewallAdmin() external returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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. 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 {
        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 v4.4.1 (interfaces/IERC165.sol)

pragma solidity ^0.8.0;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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 v4.9.0) (interfaces/IERC4906.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";
import "./IERC721.sol";

/// @title EIP-721 Metadata Update Extension
interface IERC4906 is IERC165, IERC721 {
    /// @dev This event emits when the metadata of a token is changed.
    /// So that the third-party platforms such as NFT market could
    /// timely update the images and related attributes of the NFT.
    event MetadataUpdate(uint256 _tokenId);

    /// @dev This event emits when the metadata of a range of tokens is changed.
    /// So that the third-party platforms such as NFT market could
    /// timely update the images and related attributes of the NFTs.
    event BatchMetadataUpdate(uint256 _fromTokenId, uint256 _toTokenId);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC721.sol)

pragma solidity ^0.8.0;

import "../token/ERC721/IERC721.sol";

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/ERC721.sol)

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: address zero is not a valid owner");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _ownerOf(tokenId);
        require(owner != address(0), "ERC721: invalid token ID");
        return owner;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        _requireMinted(tokenId);

        string memory baseURI = _baseURI();
        return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
    }

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, can be overridden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not token owner or approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        _requireMinted(tokenId);

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(address from, address to, uint256 tokenId) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");

        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
        _safeTransfer(from, to, tokenId, data);
    }

    /**
     * @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.
     *
     * `data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
     */
    function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
        return _owners[tokenId];
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _ownerOf(tokenId) != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId, 1);

        // Check that tokenId was not minted by `_beforeTokenTransfer` hook
        require(!_exists(tokenId), "ERC721: token already minted");

        unchecked {
            // Will not overflow unless all 2**256 token ids are minted to the same owner.
            // Given that tokens are minted one by one, it is impossible in practice that
            // this ever happens. Might change if we allow batch minting.
            // The ERC fails to describe this case.
            _balances[to] += 1;
        }

        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);

        _afterTokenTransfer(address(0), to, tokenId, 1);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     * This is an internal function that does not check if the sender is authorized to operate on the token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId, 1);

        // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook
        owner = ERC721.ownerOf(tokenId);

        // Clear approvals
        delete _tokenApprovals[tokenId];

        unchecked {
            // Cannot overflow, as that would require more tokens to be burned/transferred
            // out than the owner initially received through minting and transferring in.
            _balances[owner] -= 1;
        }
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);

        _afterTokenTransfer(owner, address(0), tokenId, 1);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(address from, address to, uint256 tokenId) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId, 1);

        // Check that tokenId was not transferred by `_beforeTokenTransfer` hook
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");

        // Clear approvals from the previous owner
        delete _tokenApprovals[tokenId];

        unchecked {
            // `_balances[from]` cannot overflow for the same reason as described in `_burn`:
            // `from`'s balance is the number of token held, which is at least one before the current
            // transfer.
            // `_balances[to]` could overflow in the conditions described in `_mint`. That would require
            // all 2**256 token ids to be minted, which in practice is impossible.
            _balances[from] -= 1;
            _balances[to] += 1;
        }
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);

        _afterTokenTransfer(from, to, tokenId, 1);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits an {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits an {ApprovalForAll} event.
     */
    function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
        require(owner != operator, "ERC721: approve to caller");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Reverts if the `tokenId` has not been minted yet.
     */
    function _requireMinted(uint256 tokenId) internal view virtual {
        require(_exists(tokenId), "ERC721: invalid token ID");
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    ) private returns (bool) {
        if (to.isContract()) {
            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    /// @solidity memory-safe-assembly
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`.
     * - When `from` is zero, the tokens will be minted for `to`.
     * - When `to` is zero, ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}

    /**
     * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`.
     * - When `from` is zero, the tokens were minted for `to`.
     * - When `to` is zero, ``from``'s tokens were burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}

    /**
     * @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
     *
     * WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant
     * being that for any address `a` the value returned by `balanceOf(a)` must be equal to the number of tokens such
     * that `ownerOf(tokenId)` is `a`.
     */
    // solhint-disable-next-line func-name-mixedcase
    function __unsafe_increaseBalance(address account, uint256 amount) internal {
        _balances[account] += amount;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/extensions/ERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../ERC721.sol";
import "./IERC721Enumerable.sol";

/**
 * @dev This implements an optional extension of {ERC721} defined in the EIP that adds
 * enumerability of all the token ids in the contract as well as all token ids owned by each
 * account.
 */
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
    // Mapping from owner to list of owned token IDs
    mapping(address => mapping(uint256 => uint256)) private _ownedTokens;

    // Mapping from token ID to index of the owner tokens list
    mapping(uint256 => uint256) private _ownedTokensIndex;

    // Array with all token ids, used for enumeration
    uint256[] private _allTokens;

    // Mapping from token id to position in the allTokens array
    mapping(uint256 => uint256) private _allTokensIndex;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
        return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
        return _ownedTokens[owner][index];
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _allTokens.length;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
        return _allTokens[index];
    }

    /**
     * @dev See {ERC721-_beforeTokenTransfer}.
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 firstTokenId,
        uint256 batchSize
    ) internal virtual override {
        super._beforeTokenTransfer(from, to, firstTokenId, batchSize);

        if (batchSize > 1) {
            // Will only trigger during construction. Batch transferring (minting) is not available afterwards.
            revert("ERC721Enumerable: consecutive transfers not supported");
        }

        uint256 tokenId = firstTokenId;

        if (from == address(0)) {
            _addTokenToAllTokensEnumeration(tokenId);
        } else if (from != to) {
            _removeTokenFromOwnerEnumeration(from, tokenId);
        }
        if (to == address(0)) {
            _removeTokenFromAllTokensEnumeration(tokenId);
        } else if (to != from) {
            _addTokenToOwnerEnumeration(to, tokenId);
        }
    }

    /**
     * @dev Private function to add a token to this extension's ownership-tracking data structures.
     * @param to address representing the new owner of the given token ID
     * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
     */
    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = ERC721.balanceOf(to);
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    /**
     * @dev Private function to add a token to this extension's token tracking data structures.
     * @param tokenId uint256 ID of the token to be added to the tokens list
     */
    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    /**
     * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
     * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
     * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
     * This has O(1) time complexity, but alters the order of the _ownedTokens array.
     * @param from address representing the previous owner of the given token ID
     * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
     */
    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary
        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];

            _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
            _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
        }

        // This also deletes the contents at the last position of the array
        delete _ownedTokensIndex[tokenId];
        delete _ownedTokens[from][lastTokenIndex];
    }

    /**
     * @dev Private function to remove a token from this extension's token tracking data structures.
     * This has O(1) time complexity, but alters the order of the _allTokens array.
     * @param tokenId uint256 ID of the token to be removed from the tokens list
     */
    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
        // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
        // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
        uint256 lastTokenId = _allTokens[lastTokenIndex];

        _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
        _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

        // This also deletes the contents at the last position of the array
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// 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: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * 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 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 (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

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

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (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;
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/introspection/ERC165Checker.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Library used to query support of an interface declared via {IERC165}.
 *
 * Note that these functions return the actual result of the query: they do not
 * `revert` if an interface is not supported. It is up to the caller to decide
 * what to do in these cases.
 */
library ERC165Checker {
    // As per the EIP-165 spec, no interface should ever match 0xffffffff
    bytes4 private constant _INTERFACE_ID_INVALID = 0xffffffff;

    /**
     * @dev Returns true if `account` supports the {IERC165} interface.
     */
    function supportsERC165(address account) internal view returns (bool) {
        // Any contract that implements ERC165 must explicitly indicate support of
        // InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid
        return
            supportsERC165InterfaceUnchecked(account, type(IERC165).interfaceId) &&
            !supportsERC165InterfaceUnchecked(account, _INTERFACE_ID_INVALID);
    }

    /**
     * @dev Returns true if `account` supports the interface defined by
     * `interfaceId`. Support for {IERC165} itself is queried automatically.
     *
     * See {IERC165-supportsInterface}.
     */
    function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) {
        // query support of both ERC165 as per the spec and support of _interfaceId
        return supportsERC165(account) && supportsERC165InterfaceUnchecked(account, interfaceId);
    }

    /**
     * @dev Returns a boolean array where each value corresponds to the
     * interfaces passed in and whether they're supported or not. This allows
     * you to batch check interfaces for a contract where your expectation
     * is that some interfaces may not be supported.
     *
     * See {IERC165-supportsInterface}.
     *
     * _Available since v3.4._
     */
    function getSupportedInterfaces(
        address account,
        bytes4[] memory interfaceIds
    ) internal view returns (bool[] memory) {
        // an array of booleans corresponding to interfaceIds and whether they're supported or not
        bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length);

        // query support of ERC165 itself
        if (supportsERC165(account)) {
            // query support of each interface in interfaceIds
            for (uint256 i = 0; i < interfaceIds.length; i++) {
                interfaceIdsSupported[i] = supportsERC165InterfaceUnchecked(account, interfaceIds[i]);
            }
        }

        return interfaceIdsSupported;
    }

    /**
     * @dev Returns true if `account` supports all the interfaces defined in
     * `interfaceIds`. Support for {IERC165} itself is queried automatically.
     *
     * Batch-querying can lead to gas savings by skipping repeated checks for
     * {IERC165} support.
     *
     * See {IERC165-supportsInterface}.
     */
    function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) {
        // query support of ERC165 itself
        if (!supportsERC165(account)) {
            return false;
        }

        // query support of each interface in interfaceIds
        for (uint256 i = 0; i < interfaceIds.length; i++) {
            if (!supportsERC165InterfaceUnchecked(account, interfaceIds[i])) {
                return false;
            }
        }

        // all interfaces supported
        return true;
    }

    /**
     * @notice Query if a contract implements an interface, does not check ERC165 support
     * @param account The address of the contract to query for support of an interface
     * @param interfaceId The interface identifier, as specified in ERC-165
     * @return true if the contract at account indicates support of the interface with
     * identifier interfaceId, false otherwise
     * @dev Assumes that account contains a contract that supports ERC165, otherwise
     * the behavior of this method is undefined. This precondition can be checked
     * with {supportsERC165}.
     *
     * Some precompiled contracts will falsely indicate support for a given interface, so caution
     * should be exercised when using this function.
     *
     * Interface identification is specified in ERC-165.
     */
    function supportsERC165InterfaceUnchecked(address account, bytes4 interfaceId) internal view returns (bool) {
        // prepare call
        bytes memory encodedParams = abi.encodeWithSelector(IERC165.supportsInterface.selector, interfaceId);

        // perform static call
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly {
            success := staticcall(30000, account, add(encodedParams, 0x20), mload(encodedParams), 0x00, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0x00)
        }

        return success && returnSize >= 0x20 && returnValue > 0;
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * 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[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

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

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

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

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @title contains array utility functions
library Array {
    /// @dev returns a new slice of the array
    function KeepNElementsInArray(uint256[] memory _arr, uint256 _n)
        internal
        pure
        returns (uint256[] memory newArray)
    {
        if (_arr.length == _n) return _arr;
        require(_arr.length > _n, "can't cut more then got");
        newArray = new uint256[](_n);
        for (uint256 i = 0; i < _n; ++i) {
            newArray[i] = _arr[i];
        }
        return newArray;
    }

    function KeepNElementsInArray(address[] memory _arr, uint256 _n)
        internal
        pure
        returns (address[] memory newArray)
    {
        if (_arr.length == _n) return _arr;
        require(_arr.length > _n, "can't cut more then got");
        newArray = new address[](_n);
        for (uint256 i = 0; i < _n; ++i) {
            newArray[i] = _arr[i];
        }
        return newArray;
    }

    /// @return true if the array is ordered
    function isArrayOrdered(uint256[] memory _arr)
        internal
        pure
        returns (bool)
    {
        require(_arr.length > 0, "array should be greater than zero");
        uint256 temp = _arr[0];
        for (uint256 i = 1; i < _arr.length; ++i) {
            if (temp > _arr[i]) {
                return false;
            }
            temp = _arr[i];
        }
        return true;
    }

    /// @return sum of the array elements
    function getArraySum(uint256[] memory _array)
        internal
        pure
        returns (uint256)
    {
        uint256 sum = 0;
        for (uint256 i = 0; i < _array.length; ++i) {
            sum = sum + _array[i];
        }
        return sum;
    }

    /// @return true if the element exists in the array
    function isInArray(address[] memory _arr, address _elem)
        internal
        pure
        returns (bool)
    {
        for (uint256 i = 0; i < _arr.length; ++i) {
            if (_arr[i] == _elem) return true;
        }
        return false;
    }

    function addIfNotExsist(address[] storage _arr, address _elem) internal {
        if (!Array.isInArray(_arr, _elem)) {
            _arr.push(_elem);
        }
    }
}

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

interface IBeforeTransfer {
    function beforeTransfer(address from, address to, uint256 poolId) external;
}

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

interface IInnerWithdraw {
    function getInnerIdsArray(uint256 poolId) external returns (uint256[] calldata ids);
}

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

import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol";
import "./IProvider.sol";
import "./IVaultManager.sol";

interface ILockDealNFT is IERC721Enumerable {
    function approvedContracts(address contractAddress) external view returns (bool);

    function mintAndTransfer(
        address owner,
        address token,
        uint256 amount,
        IProvider provider
    ) external returns (uint256 poolId);

    function safeMintAndTransfer(
        address owner,
        address token,
        address from,
        uint256 amount,
        IProvider provider,
        bytes calldata data
    ) external returns (uint256 poolId);

    function cloneVaultId(uint256 destinationPoolId, uint256 sourcePoolId) external;

    function mintForProvider(address owner, IProvider provider) external returns (uint256 poolId);

    function getData(uint256 poolId) external view returns (BasePoolInfo memory poolInfo);

    function getFullData(uint256 poolId) external view returns (BasePoolInfo[] memory poolInfo);

    function tokenOf(uint256 poolId) external view returns (address token);

    function vaultManager() external view returns (IVaultManager);

    function poolIdToProvider(uint256 poolId) external view returns (IProvider provider);

    function getWithdrawableAmount(uint256 poolId) external view returns (uint256 withdrawalAmount);

    struct BasePoolInfo {
        IProvider provider;
        string name;
        uint256 poolId;
        uint256 vaultId;
        address owner;
        address token;
        uint256[] params;
    }
}

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

///@dev Interface for the provider contract
///@notice This interface is used by the NFT contract to call the provider contract
interface IProvider {
    event UpdateParams(uint256 indexed poolId, uint256[] params);

    function withdraw(uint256 tokenId) external returns (uint256 withdrawnAmount, bool isFinal);

    function split(uint256 oldPoolId, uint256 newPoolId, uint256 ratio) external;

    function registerPool(uint256 poolId, uint256[] calldata params) external;

    function getParams(uint256 poolId) external view returns (uint256[] memory params);

    function getWithdrawableAmount(uint256 poolId) external view returns (uint256 withdrawalAmount);

    function currentParamsTargetLength() external view returns (uint256);

    function name() external view returns (string memory);

    function getSubProvidersPoolIds(uint256 poolID) external view returns (uint256[] memory poolIds);
}

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

import "@openzeppelin/contracts/interfaces/IERC2981.sol";

interface IVaultManager is IERC2981 {
    function depositByToken(address _tokenAddress, uint _amount) external returns (uint vaultId);
    function safeDeposit(
        address _tokenAddress,
        uint _amount,
        address _from,
        bytes memory _signature
    ) external returns (uint vaultId);
    function withdrawByVaultId(uint _vaultId, address to, uint _amount) external;
    function vaultIdToTokenAddress(uint _vaultId) external view returns (address token);
    function vaultIdToTradeStartTime(uint256 _vaultId) external view returns (uint256 startTime);
}

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

import "@poolzfinance/poolz-helper-v2/contracts/interfaces/IProvider.sol";

/// @title ILockDealNFTEvents interface
/// @notice Contains all events emitted by the LockDealNFT
interface ILockDealNFTEvents {
    event ContractApproved(address indexed contractAddress, bool status);
    event BaseURIChanged(string oldBaseURI, string newBaseURI);
    event TokenWithdrawn(uint256 poolId, address indexed owner, uint256 withdrawnAmount, uint256 leftAmount);
    event PoolSplit(
        uint256 poolId,
        address indexed owner,
        uint256 newPoolId,
        address indexed newOwner,
        uint256 splitLeftAmount,
        uint256 newSplitLeftAmount
    );
}

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

import "./LockDealNFTModifiers.sol";
import "@openzeppelin/contracts/utils/introspection/ERC165Checker.sol";
import "@poolzfinance/poolz-helper-v2/contracts/interfaces/IBeforeTransfer.sol";
import "@poolzfinance/poolz-helper-v2/contracts/interfaces/IInnerWithdraw.sol";
import "@ironblocks/firewall-consumer/contracts/FirewallConsumer.sol";

abstract contract LockDealNFTInternal is LockDealNFTModifiers, FirewallConsumer {
    function _transfer(address from, address to, uint256 poolId)
        internal
        override
        firewallProtectedSig(0x30e0789e)
    {
        if (
            from != address(0) &&
            ERC165Checker.supportsInterface(address(poolIdToProvider[poolId]), type(IBeforeTransfer).interfaceId)
        ) {
            IBeforeTransfer(address(poolIdToProvider[poolId])).beforeTransfer(from, to, poolId);
        }
        // check for split and withdraw transfers
        if (!(approvedContracts[to] || approvedContracts[from])) {
            require(approvedPoolUserTransfers[from], "Pool transfer not approved by user");
            require(
                vaultManager.vaultIdToTradeStartTime(poolIdToVaultId[poolId]) < block.timestamp,
                "Can't transfer before trade start time"
            );
        }
        super._transfer(from, to, poolId);
    }

    /// @param owner The address to assign the token to
    /// @param provider The address of the provider assigning the token
    /// @return newPoolId The ID of the pool
    function _mint(address owner, IProvider provider)
        internal
        firewallProtectedSig(0x3c99ae44)
        returns (uint256 newPoolId)
    {
        newPoolId = totalSupply();
        _safeMint(owner, newPoolId);
        poolIdToProvider[newPoolId] = provider;
    }

    function _parseData(bytes calldata data, address from) internal pure returns (uint256 ratio, address newOwner) {
        (ratio, newOwner) = data.length == 32
            ? (abi.decode(data, (uint256)), from)
            : abi.decode(data, (uint256, address));
    }

    function _baseURI() internal view override returns (string memory) {
        return baseURI;
    }

    function _handleReturn(uint256 poolId, address from, bool isFinal)
        internal
        firewallProtectedSig(0x1d50d0db)
    {
        if (!isFinal) {
            _transfer(address(this), from, poolId);
        }
    }

    function _withdrawFromVault(uint256 poolId, uint256 withdrawnAmount, address from)
        internal
        firewallProtectedSig(0x05d6a92f)
    {
        if (withdrawnAmount > 0) {
            vaultManager.withdrawByVaultId(poolIdToVaultId[poolId], from, withdrawnAmount);
            emit MetadataUpdate(poolId);
            emit TokenWithdrawn(poolId, from, withdrawnAmount, _getData(poolId).params[0]);
        }
    }

    function _withdraw(address from, uint256 poolId)
        internal
        firewallProtectedSig(0xb790a77b)
        returns (bool isFinal)
    {
        uint256 withdrawnAmount;
        IProvider provider = poolIdToProvider[poolId];
        (withdrawnAmount, isFinal) = provider.withdraw(poolId);
        if (ERC165Checker.supportsInterface(address(provider), type(IInnerWithdraw).interfaceId)) {
            withdrawnAmount = 0;
            uint256[] memory ids = IInnerWithdraw(address(provider)).getInnerIdsArray(poolId);
            for (uint256 i = 0; i < ids.length; ++i) {
                uint256 id = ids[i];
                require(ownerOf(id) == address(poolIdToProvider[poolId]), "invalid inner id");
                _withdraw(from, id);
            }
        }
        _withdrawFromVault(poolId, withdrawnAmount, from);
    }

    /// @dev Splits a pool into two pools with adjusted amounts
    /// @param poolId The ID of the pool to split
    function _split(uint256 poolId, address from, bytes calldata data)
        internal
        firewallProtectedSig(0x1746b892)
        returns (bool isFinal)
    {
        (uint256 ratio, address newOwner) = _parseData(data, from);
        isFinal = _split(poolId, from, ratio, newOwner);
    }

    struct SplitLocals {
        IProvider provider;
        uint256 newPoolId;
    }

    function _split(
        uint256 poolId,
        address from,
        uint256 ratio,
        address newOwner
    )
        private
        notZeroAddress(newOwner)
        notZeroAmount(ratio)
        returns (bool isFinal)
    {
        require(ratio <= 1e21, "split amount exceeded");
        SplitLocals memory locals;
        locals.provider = poolIdToProvider[poolId];
        locals.newPoolId = _mint(newOwner, locals.provider);
        poolIdToVaultId[locals.newPoolId] = poolIdToVaultId[poolId];
        locals.provider.split(poolId, locals.newPoolId, ratio);
        isFinal = locals.provider.getParams(poolId)[0] == 0;
        uint256 splitLeftAmount = _getData(poolId).params[0];
        emit PoolSplit(poolId, from, locals.newPoolId, newOwner, splitLeftAmount, _getData(locals.newPoolId).params[0]);
        emit MetadataUpdate(poolId);
    }
}

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

import "./LockDealNFTState.sol";

abstract contract LockDealNFTModifiers is LockDealNFTState {
    modifier onlyApprovedContract(address contractAddress) {
        _onlyApprovedContract(contractAddress);
        if (contractAddress != msg.sender) {
            _onlyApprovedContract(msg.sender);
        }
        _;
    }

    modifier onlyContract(address contractAddress) {
        _onlyContract(contractAddress);
        _;
    }

    modifier notZeroAddress(address _address) {
        _notZeroAddress(_address);
        _;
    }

    modifier notZeroAmount(uint256 amount) {
        _notZeroAmount(amount);
        _;
    }

    modifier validPoolId(uint256 poolId) {
        _validPoolId(poolId);
        _;
    }

    function _notZeroAddress(address _address) internal pure {
        require(_address != address(0x0), "Zero Address is not allowed");
    }

    function _onlyContract(address contractAddress) private view {
        require(Address.isContract(contractAddress), "Invalid contract address");
    }

    function _onlyApprovedContract(address contractAddress) internal view {
        require(approvedContracts[contractAddress], "Contract not approved");
    }

    function _notZeroAmount(uint256 amount) private pure {
        require(amount > 0, "amount must be greater than 0");
    }

    function _validPoolId(uint256 poolId) internal view {
        require(_exists(poolId), "Pool does not exist");
    }
}

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

import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/interfaces/IERC4906.sol";
import "@poolzfinance/poolz-helper-v2/contracts/interfaces/IVaultManager.sol";
import "@poolzfinance/poolz-helper-v2/contracts/interfaces/ILockDealNFT.sol";
import "@poolzfinance/poolz-helper-v2/contracts/Array.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./ILockDealNFTEvents.sol";

/**
 * @title LockDealNFTState
 * @dev An abstract contract that defines the state variables and mappings for the LockDealNFT contract.
 */
abstract contract LockDealNFTState is ERC721Enumerable, ILockDealNFTEvents, Ownable, IERC4906, ILockDealNFT, IERC2981 {
    string public baseURI;
    IVaultManager public vaultManager;

    mapping(uint256 => IProvider) public poolIdToProvider;
    mapping(uint256 => uint256) public poolIdToVaultId;
    mapping(address => bool) public approvedPoolUserTransfers;
    mapping(address => bool) public approvedContracts;

    function getData(uint256 poolId) public view returns (BasePoolInfo memory poolInfo) {
        if (_exists(poolId)) {
            poolInfo = _getData(poolId);
        }
    }

    function getFullData(uint256 poolId) public view returns (BasePoolInfo[] memory poolInfo) {
        if (_exists(poolId)) {
            uint256[] memory poolIds = poolIdToProvider[poolId].getSubProvidersPoolIds(poolId);
            uint256 length = poolIds.length + 1;
            poolInfo = new BasePoolInfo[](length);
            poolInfo[0] = _getData(poolId);
            for (uint256 i = 1; i < length; ++i) {
                poolInfo[i] = _getData(poolIds[i - 1]);
            }
        }
    }

    function _getData(uint256 poolId) internal view returns (BasePoolInfo memory poolInfo) {
        IProvider provider = poolIdToProvider[poolId];
        poolInfo = BasePoolInfo(
            provider,
            provider.name(),
            poolId,
            poolIdToVaultId[poolId],
            ownerOf(poolId),
            tokenOf(poolId),
            provider.getParams(poolId)
        );
    }

    /// @dev Retrieves user data by tokens between a specified index range.
    /// This is used by the front-end to fetch NFTs linked to a predefined set of supported tokens.
    /// It's primarily queried off-chain, so gas costs are not a concern here.
    /// @param user The address of the user.
    /// @param tokens The list of supported tokens.
    /// @param from Starting index for the query.
    /// @param to Ending index for the query.
    /// @return userPoolInfo An array containing pool information for the user's NFTs within the specified range.
    function getUserDataByTokens(
        address user,
        address[] calldata tokens,
        uint256 from,
        uint256 to
    ) public view returns (BasePoolInfo[] memory userPoolInfo) {
        require(from <= to, "Invalid range");
        require(to < balanceOf(user, tokens), "Range greater than user pool count");
        userPoolInfo = new BasePoolInfo[](to - from + 1);
        uint256 userPoolIndex = 0;
        for (uint256 i = from; i <= to; ++i) {
            uint256 poolId = tokenOfOwnerByIndex(user, tokens, i);
            userPoolInfo[userPoolIndex++] = getData(poolId);
        }
    }

    function tokenOf(uint256 poolId) public view returns (address token) {
        token = vaultManager.vaultIdToTokenAddress(poolIdToVaultId[poolId]);
    }

    function getWithdrawableAmount(uint256 poolId) external view returns (uint256 withdrawalAmount) {
        if (_exists(poolId)) {
            withdrawalAmount = poolIdToProvider[poolId].getWithdrawableAmount(poolId);
        }
    }

    function royaltyInfo(
        uint256 tokenId,
        uint256 salePrice
    ) external view override returns (address receiver, uint256 royaltyAmount) {
        (receiver, royaltyAmount) = vaultManager.royaltyInfo(poolIdToVaultId[tokenId], salePrice);
    }

    function supportsInterface(
        bytes4 interfaceId
    ) public view virtual override(ERC721Enumerable, IERC165) returns (bool) {
        return
            interfaceId == type(IERC2981).interfaceId ||
            interfaceId == type(ILockDealNFT).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /// @dev Returns the balance of NFTs owned by an address, which are also in the provided tokens list.
    /// @param owner The address of the owner.
    /// @param tokens List of supported tokens to filter by.
    /// @return balance The number of NFTs owned by the address and present in the tokens list.
    function balanceOf(address owner, address[] calldata tokens) public view returns (uint256 balance) {
        uint256 fullBalanceOf = balanceOf(owner);
        for (uint256 i = 0; i < fullBalanceOf; ++i) {
            if (Array.isInArray(tokens, tokenOf(tokenOfOwnerByIndex(owner, i)))) {
                ++balance;
            }
        }
    }

    /// @dev Retrieves a token ID owned by an address at a specific index, which is also in the provided tokens list.
    /// @param owner The address of the owner.
    /// @param tokens List of supported tokens to filter by.
    /// @param index The index to retrieve the token ID from.
    /// @return poolId The token ID owned by the address at the specified index.
    function tokenOfOwnerByIndex(
        address owner,
        address[] calldata tokens,
        uint256 index
    ) public view returns (uint256 poolId) {
        uint256 length = balanceOf(owner, tokens);
        require(index < length, "invalid poolId index by token association");
        uint256 fullBalanceOf = balanceOf(owner);
        uint256 j = 0;
        for (uint256 i = 0; i < fullBalanceOf; ++i) {
            poolId = tokenOfOwnerByIndex(owner, i);
            if (Array.isInArray(tokens, tokenOf(poolId)) && j++ == index) {
                return poolId;
            }
        }
    }
}

{
  "evmVersion": "istanbul",
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
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  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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0000000000000000000000009ff1db30c66cd9d3311b4b22da49791610922b1300000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _vaultManager (address): 0x9ff1dB30C66cD9d3311b4B22da49791610922b13
Arg [1] : _baseURI (string): 

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000009ff1db30c66cd9d3311b4b22da49791610922b13
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000040
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000000