// SPDX-License-Identifier: MIT

pragma solidity 0.8.10;

import {ICollectNFT} from '../interfaces/ICollectNFT.sol';
import {IERC721} from '@openzeppelin/contracts/token/ERC721/IERC721.sol';
import {ILensHub} from '../interfaces/ILensHub.sol';
import {Errors} from '../libraries/Errors.sol';
import {Events} from '../libraries/Events.sol';
import {LensNFTBase} from './base/LensNFTBase.sol';
import {ERC721Enumerable} from './base/ERC721Enumerable.sol';

/**
 * @title CollectNFT
 * @author Lens Protocol
 *
 * @notice This is the NFT contract that is minted upon collecting a given publication. It is cloned upon
 * the first collect for a given publication, and the token URI points to the original publication's contentURI.
 */
contract CollectNFT is LensNFTBase, ICollectNFT {
    address public immutable HUB;

    uint256 internal _profileId;
    uint256 internal _pubId;
    uint256 internal _tokenIdCounter;

    bool private _initialized;

    uint256 internal _royaltyBasisPoints;

    // bytes4(keccak256('royaltyInfo(uint256,uint256)')) == 0x2a55205a
    bytes4 internal constant INTERFACE_ID_ERC2981 = 0x2a55205a;
    uint16 internal constant BASIS_POINTS = 10000;

    // We create the CollectNFT with the pre-computed HUB address before deploying the hub proxy in order
    // to initialize the hub proxy at construction.
    constructor(address hub) {
        if (hub == address(0)) revert Errors.InitParamsInvalid();
        HUB = hub;
        _initialized = true;
    }

    /// @inheritdoc ICollectNFT
    function initialize(
        uint256 profileId,
        uint256 pubId,
        string calldata name,
        string calldata symbol
    ) external override {
        if (_initialized) revert Errors.Initialized();
        _initialized = true;
        _royaltyBasisPoints = 1000; // 10% of royalties
        _profileId = profileId;
        _pubId = pubId;
        super._initialize(name, symbol);
        emit Events.CollectNFTInitialized(profileId, pubId, block.timestamp);
    }

    /// @inheritdoc ICollectNFT
    function mint(address to) external override returns (uint256) {
        if (msg.sender != HUB) revert Errors.NotHub();
        unchecked {
            uint256 tokenId = ++_tokenIdCounter;
            _mint(to, tokenId);
            return tokenId;
        }
    }

    /// @inheritdoc ICollectNFT
    function getSourcePublicationPointer() external view override returns (uint256, uint256) {
        return (_profileId, _pubId);
    }

    function tokenURI(uint256 tokenId) public view override returns (string memory) {
        if (!_exists(tokenId)) revert Errors.TokenDoesNotExist();
        return ILensHub(HUB).getContentURI(_profileId, _pubId);
    }

    /**
     * @notice Changes the royalty percentage for secondary sales. Can only be called publication's
     *         profile owner.
     *
     * @param royaltyBasisPoints The royalty percentage meassured in basis points. Each basis point
     *                           represents 0.01%.
     */
    function setRoyalty(uint256 royaltyBasisPoints) external {
        if (IERC721(HUB).ownerOf(_profileId) == msg.sender) {
            if (royaltyBasisPoints > BASIS_POINTS) {
                revert Errors.InvalidParameter();
            } else {
                _royaltyBasisPoints = royaltyBasisPoints;
            }
        } else {
            revert Errors.NotProfileOwner();
        }
    }

    /**
     * @notice Called with the sale price to determine how much royalty
     *         is owed and to whom.
     *
     * @param tokenId The token ID of the NFT queried for royalty information.
     * @param salePrice The sale price of the NFT specified.
     * @return A tuple with the address who should receive the royalties and the royalty
     * payment amount for the given sale price.
     */
    function royaltyInfo(uint256 tokenId, uint256 salePrice)
        external
        view
        returns (address, uint256)
    {
        return (IERC721(HUB).ownerOf(_profileId), (salePrice * _royaltyBasisPoints) / BASIS_POINTS);
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override(ERC721Enumerable)
        returns (bool)
    {
        return interfaceId == INTERFACE_ID_ERC2981 || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Upon transfers, we emit the transfer event in the hub.
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal override {
        super._beforeTokenTransfer(from, to, tokenId);
        ILensHub(HUB).emitCollectNFTTransferEvent(_profileId, _pubId, tokenId, from, to);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.10;

/**
 * @title ICollectNFT
 * @author Lens Protocol
 *
 * @notice This is the interface for the CollectNFT contract. Which is cloned upon the first collect for any given
 * publication.
 */
interface ICollectNFT {
    /**
     * @notice Initializes the collect NFT, setting the feed as the privileged minter, storing the collected publication pointer
     * and initializing the name and symbol in the LensNFTBase contract.
     *
     * @param profileId The token ID of the profile in the hub that this collectNFT points to.
     * @param pubId The profile publication ID in the hub that this collectNFT points to.
     * @param name The name to set for this NFT.
     * @param symbol The symbol to set for this NFT.
     */
    function initialize(
        uint256 profileId,
        uint256 pubId,
        string calldata name,
        string calldata symbol
    ) external;

    /**
     * @notice Mints a collect NFT to the specified address. This can only be called by the hub, and is called
     * upon collection.
     *
     * @param to The address to mint the NFT to.
     *
     * @return uint256 An interger representing the minted token ID.
     */
    function mint(address to) external returns (uint256);

    /**
     * @notice Returns the source publication pointer mapped to this collect NFT.
     *
     * @return tuple First the profile ID uint256, and second the pubId uint256.
     */
    function getSourcePublicationPointer() external view returns (uint256, uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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`, 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 be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

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

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

    /**
     * @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 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);

    /**
     * @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;
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.10;

import {DataTypes} from '../libraries/DataTypes.sol';

/**
 * @title ILensHub
 * @author Lens Protocol
 *
 * @notice This is the interface for the LensHub contract, the main entry point for the Lens Protocol.
 * You'll find all the events and external functions, as well as the reasoning behind them here.
 */
interface ILensHub {
    /**
     * @notice Initializes the LensHub NFT, setting the initial governance address as well as the name and symbol in
     * the LensNFTBase contract.
     *
     * @param name The name to set for the hub NFT.
     * @param symbol The symbol to set for the hub NFT.
     * @param newGovernance The governance address to set.
     */
    function initialize(
        string calldata name,
        string calldata symbol,
        address newGovernance
    ) external;

    /**
     * @notice Sets the privileged governance role. This function can only be called by the current governance
     * address.
     *
     * @param newGovernance The new governance address to set.
     */
    function setGovernance(address newGovernance) external;

    /**
     * @notice Sets the emergency admin, which is a permissioned role able to set the protocol state. This function
     * can only be called by the governance address.
     *
     * @param newEmergencyAdmin The new emergency admin address to set.
     */
    function setEmergencyAdmin(address newEmergencyAdmin) external;

    /**
     * @notice Sets the protocol state to either a global pause, a publishing pause or an unpaused state. This function
     * can only be called by the governance address or the emergency admin address.
     *
     * Note that this reverts if the emergency admin calls it if:
     *      1. The emergency admin is attempting to unpause.
     *      2. The emergency admin is calling while the protocol is already paused.
     *
     * @param newState The state to set, as a member of the ProtocolState enum.
     */
    function setState(DataTypes.ProtocolState newState) external;

    /**
     * @notice Adds or removes a profile creator from the whitelist. This function can only be called by the current
     * governance address.
     *
     * @param profileCreator The profile creator address to add or remove from the whitelist.
     * @param whitelist Whether or not the profile creator should be whitelisted.
     */
    function whitelistProfileCreator(address profileCreator, bool whitelist) external;

    /**
     * @notice Adds or removes a follow module from the whitelist. This function can only be called by the current
     * governance address.
     *
     * @param followModule The follow module contract address to add or remove from the whitelist.
     * @param whitelist Whether or not the follow module should be whitelisted.
     */
    function whitelistFollowModule(address followModule, bool whitelist) external;

    /**
     * @notice Adds or removes a reference module from the whitelist. This function can only be called by the current
     * governance address.
     *
     * @param referenceModule The reference module contract to add or remove from the whitelist.
     * @param whitelist Whether or not the reference module should be whitelisted.
     */
    function whitelistReferenceModule(address referenceModule, bool whitelist) external;

    /**
     * @notice Adds or removes a collect module from the whitelist. This function can only be called by the current
     * governance address.
     *
     * @param collectModule The collect module contract address to add or remove from the whitelist.
     * @param whitelist Whether or not the collect module should be whitelisted.
     */
    function whitelistCollectModule(address collectModule, bool whitelist) external;

    /**
     * @notice Creates a profile with the specified parameters, minting a profile NFT to the given recipient. This
     * function must be called by a whitelisted profile creator.
     *
     * @param vars A CreateProfileData struct containing the following params:
     *      to: The address receiving the profile.
     *      handle: The handle to set for the profile, must be unique and non-empty.
     *      imageURI: The URI to set for the profile image.
     *      followModule: The follow module to use, can be the zero address.
     *      followModuleInitData: The follow module initialization data, if any.
     */
    function createProfile(DataTypes.CreateProfileData calldata vars) external returns (uint256);

    /**
     * @notice Sets the mapping between wallet and its main profile identity.
     *
     * @param profileId The token ID of the profile to set as the main profile identity.
     */
    function setDefaultProfile(uint256 profileId) external;

    /**
     * @notice Sets the mapping between wallet and its main profile identity via signature with the specified parameters.
     *
     * @param vars A SetDefaultProfileWithSigData struct, including the regular parameters and an EIP712Signature struct.
     */
    function setDefaultProfileWithSig(DataTypes.SetDefaultProfileWithSigData calldata vars)
        external;

    /**
     * @notice Sets a profile's follow module, must be called by the profile owner.
     *
     * @param profileId The token ID of the profile to set the follow module for.
     * @param followModule The follow module to set for the given profile, must be whitelisted.
     * @param followModuleInitData The data to be passed to the follow module for initialization.
     */
    function setFollowModule(
        uint256 profileId,
        address followModule,
        bytes calldata followModuleInitData
    ) external;

    /**
     * @notice Sets a profile's follow module via signature with the specified parameters.
     *
     * @param vars A SetFollowModuleWithSigData struct, including the regular parameters and an EIP712Signature struct.
     */
    function setFollowModuleWithSig(DataTypes.SetFollowModuleWithSigData calldata vars) external;

    /**
     * @notice Sets a profile's dispatcher, giving that dispatcher rights to publish to that profile.
     *
     * @param profileId The token ID of the profile of the profile to set the dispatcher for.
     * @param dispatcher The dispatcher address to set for the given profile ID.
     */
    function setDispatcher(uint256 profileId, address dispatcher) external;

    /**
     * @notice Sets a profile's dispatcher via signature with the specified parameters.
     *
     * @param vars A SetDispatcherWithSigData struct, including the regular parameters and an EIP712Signature struct.
     */
    function setDispatcherWithSig(DataTypes.SetDispatcherWithSigData calldata vars) external;

    /**
     * @notice Sets a profile's URI, which is reflected in the `tokenURI()` function.
     *
     * @param profileId The token ID of the profile of the profile to set the URI for.
     * @param imageURI The URI to set for the given profile.
     */
    function setProfileImageURI(uint256 profileId, string calldata imageURI) external;

    /**
     * @notice Sets a profile's URI via signature with the specified parameters.
     *
     * @param vars A SetProfileImageURIWithSigData struct, including the regular parameters and an EIP712Signature struct.
     */
    function setProfileImageURIWithSig(DataTypes.SetProfileImageURIWithSigData calldata vars)
        external;

    /**
     * @notice Sets a followNFT URI for a given profile's follow NFT.
     *
     * @param profileId The token ID of the profile for which to set the followNFT URI.
     * @param followNFTURI The follow NFT URI to set.
     */
    function setFollowNFTURI(uint256 profileId, string calldata followNFTURI) external;

    /**
     * @notice Sets a followNFT URI via signature with the specified parameters.
     *
     * @param vars A SetFollowNFTURIWithSigData struct, including the regular parameters and an EIP712Signature struct.
     */
    function setFollowNFTURIWithSig(DataTypes.SetFollowNFTURIWithSigData calldata vars) external;

    /**
     * @notice Publishes a post to a given profile, must be called by the profile owner.
     *
     * @param vars A PostData struct containing the needed parameters.
     *
     * @return uint256 An integer representing the post's publication ID.
     */
    function post(DataTypes.PostData calldata vars) external returns (uint256);

    /**
     * @notice Publishes a post to a given profile via signature with the specified parameters.
     *
     * @param vars A PostWithSigData struct containing the regular parameters and an EIP712Signature struct.
     *
     * @return uint256 An integer representing the post's publication ID.
     */
    function postWithSig(DataTypes.PostWithSigData calldata vars) external returns (uint256);

    /**
     * @notice Publishes a comment to a given profile, must be called by the profile owner.
     *
     * @param vars A CommentData struct containing the needed parameters.
     *
     * @return uint256 An integer representing the comment's publication ID.
     */
    function comment(DataTypes.CommentData calldata vars) external returns (uint256);

    /**
     * @notice Publishes a comment to a given profile via signature with the specified parameters.
     *
     * @param vars A CommentWithSigData struct containing the regular parameters and an EIP712Signature struct.
     *
     * @return uint256 An integer representing the comment's publication ID.
     */
    function commentWithSig(DataTypes.CommentWithSigData calldata vars) external returns (uint256);

    /**
     * @notice Publishes a mirror to a given profile, must be called by the profile owner.
     *
     * @param vars A MirrorData struct containing the necessary parameters.
     *
     * @return uint256 An integer representing the mirror's publication ID.
     */
    function mirror(DataTypes.MirrorData calldata vars) external returns (uint256);

    /**
     * @notice Publishes a mirror to a given profile via signature with the specified parameters.
     *
     * @param vars A MirrorWithSigData struct containing the regular parameters and an EIP712Signature struct.
     *
     * @return uint256 An integer representing the mirror's publication ID.
     */
    function mirrorWithSig(DataTypes.MirrorWithSigData calldata vars) external returns (uint256);

    /**
     * @notice Follows the given profiles, executing each profile's follow module logic (if any) and minting followNFTs to the caller.
     *
     * NOTE: Both the `profileIds` and `datas` arrays must be of the same length, regardless if the profiles do not have a follow module set.
     *
     * @param profileIds The token ID array of the profiles to follow.
     * @param datas The arbitrary data array to pass to the follow module for each profile if needed.
     *
     * @return uint256[] An array of integers representing the minted follow NFTs token IDs.
     */
    function follow(uint256[] calldata profileIds, bytes[] calldata datas)
        external
        returns (uint256[] memory);

    /**
     * @notice Follows a given profile via signature with the specified parameters.
     *
     * @param vars A FollowWithSigData struct containing the regular parameters as well as the signing follower's address
     * and an EIP712Signature struct.
     *
     * @return uint256[] An array of integers representing the minted follow NFTs token IDs.
     */
    function followWithSig(DataTypes.FollowWithSigData calldata vars)
        external
        returns (uint256[] memory);

    /**
     * @notice Collects a given publication, executing collect module logic and minting a collectNFT to the caller.
     *
     * @param profileId The token ID of the profile that published the publication to collect.
     * @param pubId The publication to collect's publication ID.
     * @param data The arbitrary data to pass to the collect module if needed.
     *
     * @return uint256 An integer representing the minted token ID.
     */
    function collect(
        uint256 profileId,
        uint256 pubId,
        bytes calldata data
    ) external returns (uint256);

    /**
     * @notice Collects a given publication via signature with the specified parameters.
     *
     * @param vars A CollectWithSigData struct containing the regular parameters as well as the collector's address and
     * an EIP712Signature struct.
     *
     * @return uint256 An integer representing the minted token ID.
     */
    function collectWithSig(DataTypes.CollectWithSigData calldata vars) external returns (uint256);

    /**
     * @dev Helper function to emit a detailed followNFT transfer event from the hub, to be consumed by frontends to track
     * followNFT transfers.
     *
     * @param profileId The token ID of the profile associated with the followNFT being transferred.
     * @param followNFTId The followNFT being transferred's token ID.
     * @param from The address the followNFT is being transferred from.
     * @param to The address the followNFT is being transferred to.
     */
    function emitFollowNFTTransferEvent(
        uint256 profileId,
        uint256 followNFTId,
        address from,
        address to
    ) external;

    /**
     * @dev Helper function to emit a detailed collectNFT transfer event from the hub, to be consumed by frontends to track
     * collectNFT transfers.
     *
     * @param profileId The token ID of the profile associated with the collect NFT being transferred.
     * @param pubId The publication ID associated with the collect NFT being transferred.
     * @param collectNFTId The collectNFT being transferred's token ID.
     * @param from The address the collectNFT is being transferred from.
     * @param to The address the collectNFT is being transferred to.
     */
    function emitCollectNFTTransferEvent(
        uint256 profileId,
        uint256 pubId,
        uint256 collectNFTId,
        address from,
        address to
    ) external;

    /// ************************
    /// *****VIEW FUNCTIONS*****
    /// ************************

    /**
     * @notice Returns whether or not a profile creator is whitelisted.
     *
     * @param profileCreator The address of the profile creator to check.
     *
     * @return bool True if the profile creator is whitelisted, false otherwise.
     */
    function isProfileCreatorWhitelisted(address profileCreator) external view returns (bool);

    /**
     * @notice Returns default profile for a given wallet address
     *
     * @param wallet The address to find the default mapping
     *
     * @return uint256 The default profile id, which will be 0 if not mapped.
     */
    function defaultProfile(address wallet) external view returns (uint256);

    /**
     * @notice Returns whether or not a follow module is whitelisted.
     *
     * @param followModule The address of the follow module to check.
     *
     * @return bool True if the the follow module is whitelisted, false otherwise.
     */
    function isFollowModuleWhitelisted(address followModule) external view returns (bool);

    /**
     * @notice Returns whether or not a reference module is whitelisted.
     *
     * @param referenceModule The address of the reference module to check.
     *
     * @return bool True if the the reference module is whitelisted, false otherwise.
     */
    function isReferenceModuleWhitelisted(address referenceModule) external view returns (bool);

    /**
     * @notice Returns whether or not a collect module is whitelisted.
     *
     * @param collectModule The address of the collect module to check.
     *
     * @return bool True if the the collect module is whitelisted, false otherwise.
     */
    function isCollectModuleWhitelisted(address collectModule) external view returns (bool);

    /**
     * @notice Returns the currently configured governance address.
     *
     * @return address The address of the currently configured governance.
     */
    function getGovernance() external view returns (address);

    /**
     * @notice Returns the dispatcher associated with a profile.
     *
     * @param profileId The token ID of the profile to query the dispatcher for.
     *
     * @return address The dispatcher address associated with the profile.
     */
    function getDispatcher(uint256 profileId) external view returns (address);

    /**
     * @notice Returns the publication count for a given profile.
     *
     * @param profileId The token ID of the profile to query.
     *
     * @return uint256 The number of publications associated with the queried profile.
     */
    function getPubCount(uint256 profileId) external view returns (uint256);

    /**
     * @notice Returns the followNFT associated with a given profile, if any.
     *
     * @param profileId The token ID of the profile to query the followNFT for.
     *
     * @return address The followNFT associated with the given profile.
     */
    function getFollowNFT(uint256 profileId) external view returns (address);

    /**
     * @notice Returns the followNFT URI associated with a given profile.
     *
     * @param profileId The token ID of the profile to query the followNFT URI for.
     *
     * @return string The followNFT URI associated with the given profile.
     */
    function getFollowNFTURI(uint256 profileId) external view returns (string memory);

    /**
     * @notice Returns the collectNFT associated with a given publication, if any.
     *
     * @param profileId The token ID of the profile that published the publication to query.
     * @param pubId The publication ID of the publication to query.
     *
     * @return address The address of the collectNFT associated with the queried publication.
     */
    function getCollectNFT(uint256 profileId, uint256 pubId) external view returns (address);

    /**
     * @notice Returns the follow module associated witha  given profile, if any.
     *
     * @param profileId The token ID of the profile to query the follow module for.
     *
     * @return address The address of the follow module associated with the given profile.
     */
    function getFollowModule(uint256 profileId) external view returns (address);

    /**
     * @notice Returns the collect module associated with a given publication.
     *
     * @param profileId The token ID of the profile that published the publication to query.
     * @param pubId The publication ID of the publication to query.
     *
     * @return address The address of the collect module associated with the queried publication.
     */
    function getCollectModule(uint256 profileId, uint256 pubId) external view returns (address);

    /**
     * @notice Returns the reference module associated witha  given profile, if any.
     *
     * @param profileId The token ID of the profile that published the publication to querythe reference module for.
     * @param pubId The publication ID of the publication to query the reference module for.
     *
     * @return address The address of the reference module associated with the given profile.
     */
    function getReferenceModule(uint256 profileId, uint256 pubId) external view returns (address);

    /**
     * @notice Returns the handle associated with a profile.
     *
     * @param profileId The token ID of the profile to query the handle for.
     *
     * @return string The handle associated with the profile.
     */
    function getHandle(uint256 profileId) external view returns (string memory);

    /**
     * @notice Returns the publication pointer (profileId & pubId) associated with a given publication.
     *
     * @param profileId The token ID of the profile that published the publication to query the pointer for.
     * @param pubId The publication ID of the publication to query the pointer for.
     *
     * @return tuple First, the profile ID of the profile the current publication is pointing to, second, the
     * publication ID of the publication the current publication is pointing to.
     */
    function getPubPointer(uint256 profileId, uint256 pubId)
        external
        view
        returns (uint256, uint256);

    /**
     * @notice Returns the URI associated with a given publication.
     *
     * @param profileId The token ID of the profile that published the publication to query.
     * @param pubId The publication ID of the publication to query.
     *
     * @return string The URI associated with a given publication.
     */
    function getContentURI(uint256 profileId, uint256 pubId) external view returns (string memory);

    /**
     * @notice Returns the profile token ID according to a given handle.
     *
     * @param handle The handle to resolve the profile token ID with.
     *
     * @return uint256 The profile ID the passed handle points to.
     */
    function getProfileIdByHandle(string calldata handle) external view returns (uint256);

    /**
     * @notice Returns the full profile struct associated with a given profile token ID.
     *
     * @param profileId The token ID of the profile to query.
     *
     * @return ProfileStruct The profile struct of the given profile.
     */
    function getProfile(uint256 profileId) external view returns (DataTypes.ProfileStruct memory);

    /**
     * @notice Returns the full publication struct for a given publication.
     *
     * @param profileId The token ID of the profile that published the publication to query.
     * @param pubId The publication ID of the publication to query.
     *
     * @return PublicationStruct The publication struct associated with the queried publication.
     */
    function getPub(uint256 profileId, uint256 pubId)
        external
        view
        returns (DataTypes.PublicationStruct memory);

    /**
     * @notice Returns the publication type associated with a given publication.
     *
     * @param profileId The token ID of the profile that published the publication to query.
     * @param pubId The publication ID of the publication to query.
     *
     * @return PubType The publication type, as a member of an enum (either "post," "comment" or "mirror").
     */
    function getPubType(uint256 profileId, uint256 pubId) external view returns (DataTypes.PubType);

    /**
     * @notice Returns the follow NFT implementation address.
     *
     * @return address The follow NFT implementation address.
     */
    function getFollowNFTImpl() external view returns (address);

    /**
     * @notice Returns the collect NFT implementation address.
     *
     * @return address The collect NFT implementation address.
     */
    function getCollectNFTImpl() external view returns (address);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.10;

library Errors {
    error CannotInitImplementation();
    error Initialized();
    error SignatureExpired();
    error ZeroSpender();
    error SignatureInvalid();
    error NotOwnerOrApproved();
    error NotHub();
    error TokenDoesNotExist();
    error NotGovernance();
    error NotGovernanceOrEmergencyAdmin();
    error EmergencyAdminCannotUnpause();
    error CallerNotWhitelistedModule();
    error CollectModuleNotWhitelisted();
    error FollowModuleNotWhitelisted();
    error ReferenceModuleNotWhitelisted();
    error ProfileCreatorNotWhitelisted();
    error NotProfileOwner();
    error NotProfileOwnerOrDispatcher();
    error NotDispatcher();
    error PublicationDoesNotExist();
    error HandleTaken();
    error HandleLengthInvalid();
    error HandleContainsInvalidCharacters();
    error HandleFirstCharInvalid();
    error ProfileImageURILengthInvalid();
    error CallerNotFollowNFT();
    error CallerNotCollectNFT();
    error BlockNumberInvalid();
    error ArrayMismatch();
    error CannotCommentOnSelf();
    error NotWhitelisted();
    error InvalidParameter();

    // Module Errors
    error InitParamsInvalid();
    error CollectExpired();
    error FollowInvalid();
    error ModuleDataMismatch();
    error FollowNotApproved();
    error MintLimitExceeded();
    error CollectNotAllowed();

    // MultiState Errors
    error Paused();
    error PublishingPaused();
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.10;

import {DataTypes} from './DataTypes.sol';

library Events {
    /**
     * @dev Emitted when the NFT contract's name and symbol are set at initialization.
     *
     * @param name The NFT name set.
     * @param symbol The NFT symbol set.
     * @param timestamp The current block timestamp.
     */
    event BaseInitialized(string name, string symbol, uint256 timestamp);

    /**
     * @dev Emitted when the hub state is set.
     *
     * @param caller The caller who set the state.
     * @param prevState The previous protocol state, an enum of either `Paused`, `PublishingPaused` or `Unpaused`.
     * @param newState The newly set state, an enum of either `Paused`, `PublishingPaused` or `Unpaused`.
     * @param timestamp The current block timestamp.
     */
    event StateSet(
        address indexed caller,
        DataTypes.ProtocolState indexed prevState,
        DataTypes.ProtocolState indexed newState,
        uint256 timestamp
    );

    /**
     * @dev Emitted when the governance address is changed. We emit the caller even though it should be the previous
     * governance address, as we cannot guarantee this will always be the case due to upgradeability.
     *
     * @param caller The caller who set the governance address.
     * @param prevGovernance The previous governance address.
     * @param newGovernance The new governance address set.
     * @param timestamp The current block timestamp.
     */
    event GovernanceSet(
        address indexed caller,
        address indexed prevGovernance,
        address indexed newGovernance,
        uint256 timestamp
    );

    /**
     * @dev Emitted when the emergency admin is changed. We emit the caller even though it should be the previous
     * governance address, as we cannot guarantee this will always be the case due to upgradeability.
     *
     * @param caller The caller who set the emergency admin address.
     * @param oldEmergencyAdmin The previous emergency admin address.
     * @param newEmergencyAdmin The new emergency admin address set.
     * @param timestamp The current block timestamp.
     */
    event EmergencyAdminSet(
        address indexed caller,
        address indexed oldEmergencyAdmin,
        address indexed newEmergencyAdmin,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a profile creator is added to or removed from the whitelist.
     *
     * @param profileCreator The address of the profile creator.
     * @param whitelisted Whether or not the profile creator is being added to the whitelist.
     * @param timestamp The current block timestamp.
     */
    event ProfileCreatorWhitelisted(
        address indexed profileCreator,
        bool indexed whitelisted,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a follow module is added to or removed from the whitelist.
     *
     * @param followModule The address of the follow module.
     * @param whitelisted Whether or not the follow module is being added to the whitelist.
     * @param timestamp The current block timestamp.
     */
    event FollowModuleWhitelisted(
        address indexed followModule,
        bool indexed whitelisted,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a reference module is added to or removed from the whitelist.
     *
     * @param referenceModule The address of the reference module.
     * @param whitelisted Whether or not the reference module is being added to the whitelist.
     * @param timestamp The current block timestamp.
     */
    event ReferenceModuleWhitelisted(
        address indexed referenceModule,
        bool indexed whitelisted,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a collect module is added to or removed from the whitelist.
     *
     * @param collectModule The address of the collect module.
     * @param whitelisted Whether or not the collect module is being added to the whitelist.
     * @param timestamp The current block timestamp.
     */
    event CollectModuleWhitelisted(
        address indexed collectModule,
        bool indexed whitelisted,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a profile is created.
     *
     * @param profileId The newly created profile's token ID.
     * @param creator The profile creator, who created the token with the given profile ID.
     * @param to The address receiving the profile with the given profile ID.
     * @param handle The handle set for the profile.
     * @param imageURI The image uri set for the profile.
     * @param followModule The profile's newly set follow module. This CAN be the zero address.
     * @param followModuleReturnData The data returned from the follow module's initialization. This is abi encoded
     * and totally depends on the follow module chosen.
     * @param followNFTURI The URI set for the profile's follow NFT.
     * @param timestamp The current block timestamp.
     */
    event ProfileCreated(
        uint256 indexed profileId,
        address indexed creator,
        address indexed to,
        string handle,
        string imageURI,
        address followModule,
        bytes followModuleReturnData,
        string followNFTURI,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a a default profile is set for a wallet as its main identity
     *
     * @param wallet The wallet which set or unset its default profile.
     * @param profileId The token ID of the profile being set as default, or zero.
     * @param timestamp The current block timestamp.
     */
    event DefaultProfileSet(address indexed wallet, uint256 indexed profileId, uint256 timestamp);

    /**
     * @dev Emitted when a dispatcher is set for a specific profile.
     *
     * @param profileId The token ID of the profile for which the dispatcher is set.
     * @param dispatcher The dispatcher set for the given profile.
     * @param timestamp The current block timestamp.
     */
    event DispatcherSet(uint256 indexed profileId, address indexed dispatcher, uint256 timestamp);

    /**
     * @dev Emitted when a profile's URI is set.
     *
     * @param profileId The token ID of the profile for which the URI is set.
     * @param imageURI The URI set for the given profile.
     * @param timestamp The current block timestamp.
     */
    event ProfileImageURISet(uint256 indexed profileId, string imageURI, uint256 timestamp);

    /**
     * @dev Emitted when a follow NFT's URI is set.
     *
     * @param profileId The token ID of the profile for which the followNFT URI is set.
     * @param followNFTURI The follow NFT URI set.
     * @param timestamp The current block timestamp.
     */
    event FollowNFTURISet(uint256 indexed profileId, string followNFTURI, uint256 timestamp);

    /**
     * @dev Emitted when a profile's follow module is set.
     *
     * @param profileId The profile's token ID.
     * @param followModule The profile's newly set follow module. This CAN be the zero address.
     * @param followModuleReturnData The data returned from the follow module's initialization. This is abi encoded
     * and totally depends on the follow module chosen.
     * @param timestamp The current block timestamp.
     */
    event FollowModuleSet(
        uint256 indexed profileId,
        address followModule,
        bytes followModuleReturnData,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a "post" is published.
     *
     * @param profileId The profile's token ID.
     * @param pubId The new publication's ID.
     * @param contentURI The URI mapped to this new publication.
     * @param collectModule The collect module mapped to this new publication. This CANNOT be the zero address.
     * @param collectModuleReturnData The data returned from the collect module's initialization for this given
     * publication. This is abi encoded and totally depends on the collect module chosen.
     * @param referenceModule The reference module set for this publication.
     * @param referenceModuleReturnData The data returned from the reference module at initialization. This is abi
     * encoded and totally depends on the reference module chosen.
     * @param timestamp The current block timestamp.
     */
    event PostCreated(
        uint256 indexed profileId,
        uint256 indexed pubId,
        string contentURI,
        address collectModule,
        bytes collectModuleReturnData,
        address referenceModule,
        bytes referenceModuleReturnData,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a "comment" is published.
     *
     * @param profileId The profile's token ID.
     * @param pubId The new publication's ID.
     * @param contentURI The URI mapped to this new publication.
     * @param profileIdPointed The profile token ID that this comment points to.
     * @param pubIdPointed The publication ID that this comment points to.
     * @param referenceModuleData The data passed to the reference module.
     * @param collectModule The collect module mapped to this new publication. This CANNOT be the zero address.
     * @param collectModuleReturnData The data returned from the collect module's initialization for this given
     * publication. This is abi encoded and totally depends on the collect module chosen.
     * @param referenceModule The reference module set for this publication.
     * @param referenceModuleReturnData The data returned from the reference module at initialization. This is abi
     * encoded and totally depends on the reference module chosen.
     * @param timestamp The current block timestamp.
     */
    event CommentCreated(
        uint256 indexed profileId,
        uint256 indexed pubId,
        string contentURI,
        uint256 profileIdPointed,
        uint256 pubIdPointed,
        bytes referenceModuleData,
        address collectModule,
        bytes collectModuleReturnData,
        address referenceModule,
        bytes referenceModuleReturnData,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a "mirror" is published.
     *
     * @param profileId The profile's token ID.
     * @param pubId The new publication's ID.
     * @param profileIdPointed The profile token ID that this mirror points to.
     * @param pubIdPointed The publication ID that this mirror points to.
     * @param referenceModuleData The data passed to the reference module.
     * @param referenceModule The reference module set for this publication.
     * @param referenceModuleReturnData The data returned from the reference module at initialization. This is abi
     * encoded and totally depends on the reference module chosen.
     * @param timestamp The current block timestamp.
     */
    event MirrorCreated(
        uint256 indexed profileId,
        uint256 indexed pubId,
        uint256 profileIdPointed,
        uint256 pubIdPointed,
        bytes referenceModuleData,
        address referenceModule,
        bytes referenceModuleReturnData,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a followNFT clone is deployed using a lazy deployment pattern.
     *
     * @param profileId The token ID of the profile to which this followNFT is associated.
     * @param followNFT The address of the newly deployed followNFT clone.
     * @param timestamp The current block timestamp.
     */
    event FollowNFTDeployed(
        uint256 indexed profileId,
        address indexed followNFT,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a collectNFT clone is deployed using a lazy deployment pattern.
     *
     * @param profileId The publisher's profile token ID.
     * @param pubId The publication associated with the newly deployed collectNFT clone's ID.
     * @param collectNFT The address of the newly deployed collectNFT clone.
     * @param timestamp The current block timestamp.
     */
    event CollectNFTDeployed(
        uint256 indexed profileId,
        uint256 indexed pubId,
        address indexed collectNFT,
        uint256 timestamp
    );

    /**
     * @dev Emitted upon a successful collect action.
     *
     * @param collector The address collecting the publication.
     * @param profileId The token ID of the profile that the collect was initiated towards, useful to differentiate mirrors.
     * @param pubId The publication ID that the collect was initiated towards, useful to differentiate mirrors.
     * @param rootProfileId The profile token ID of the profile whose publication is being collected.
     * @param rootPubId The publication ID of the publication being collected.
     * @param collectModuleData The data passed to the collect module.
     * @param timestamp The current block timestamp.
     */
    event Collected(
        address indexed collector,
        uint256 indexed profileId,
        uint256 indexed pubId,
        uint256 rootProfileId,
        uint256 rootPubId,
        bytes collectModuleData,
        uint256 timestamp
    );

    /**
     * @dev Emitted upon a successful follow action.
     *
     * @param follower The address following the given profiles.
     * @param profileIds The token ID array of the profiles being followed.
     * @param followModuleDatas The array of data parameters passed to each follow module.
     * @param timestamp The current block timestamp.
     */
    event Followed(
        address indexed follower,
        uint256[] profileIds,
        bytes[] followModuleDatas,
        uint256 timestamp
    );

    /**
     * @dev Emitted via callback when a followNFT is transferred.
     *
     * @param profileId The token ID of the profile associated with the followNFT being transferred.
     * @param followNFTId The followNFT being transferred's token ID.
     * @param from The address the followNFT is being transferred from.
     * @param to The address the followNFT is being transferred to.
     * @param timestamp The current block timestamp.
     */
    event FollowNFTTransferred(
        uint256 indexed profileId,
        uint256 indexed followNFTId,
        address from,
        address to,
        uint256 timestamp
    );

    /**
     * @dev Emitted via callback when a collectNFT is transferred.
     *
     * @param profileId The token ID of the profile associated with the collectNFT being transferred.
     * @param pubId The publication ID associated with the collectNFT being transferred.
     * @param collectNFTId The collectNFT being transferred's token ID.
     * @param from The address the collectNFT is being transferred from.
     * @param to The address the collectNFT is being transferred to.
     * @param timestamp The current block timestamp.
     */
    event CollectNFTTransferred(
        uint256 indexed profileId,
        uint256 indexed pubId,
        uint256 indexed collectNFTId,
        address from,
        address to,
        uint256 timestamp
    );

    // Collect/Follow NFT-Specific

    /**
     * @dev Emitted when a newly deployed follow NFT is initialized.
     *
     * @param profileId The token ID of the profile connected to this follow NFT.
     * @param timestamp The current block timestamp.
     */
    event FollowNFTInitialized(uint256 indexed profileId, uint256 timestamp);

    /**
     * @dev Emitted when delegation power in a FollowNFT is changed.
     *
     * @param delegate The delegate whose power has been changed.
     * @param newPower The new governance power mapped to the delegate.
     * @param timestamp The current block timestamp.
     */
    event FollowNFTDelegatedPowerChanged(
        address indexed delegate,
        uint256 indexed newPower,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a newly deployed collect NFT is initialized.
     *
     * @param profileId The token ID of the profile connected to the publication mapped to this collect NFT.
     * @param pubId The publication ID connected to the publication mapped to this collect NFT.
     * @param timestamp The current block timestamp.
     */
    event CollectNFTInitialized(
        uint256 indexed profileId,
        uint256 indexed pubId,
        uint256 timestamp
    );

    // Module-Specific

    /**
     * @notice Emitted when the ModuleGlobals governance address is set.
     *
     * @param prevGovernance The previous governance address.
     * @param newGovernance The new governance address set.
     * @param timestamp The current block timestamp.
     */
    event ModuleGlobalsGovernanceSet(
        address indexed prevGovernance,
        address indexed newGovernance,
        uint256 timestamp
    );

    /**
     * @notice Emitted when the ModuleGlobals treasury address is set.
     *
     * @param prevTreasury The previous treasury address.
     * @param newTreasury The new treasury address set.
     * @param timestamp The current block timestamp.
     */
    event ModuleGlobalsTreasurySet(
        address indexed prevTreasury,
        address indexed newTreasury,
        uint256 timestamp
    );

    /**
     * @notice Emitted when the ModuleGlobals treasury fee is set.
     *
     * @param prevTreasuryFee The previous treasury fee in BPS.
     * @param newTreasuryFee The new treasury fee in BPS.
     * @param timestamp The current block timestamp.
     */
    event ModuleGlobalsTreasuryFeeSet(
        uint16 indexed prevTreasuryFee,
        uint16 indexed newTreasuryFee,
        uint256 timestamp
    );

    /**
     * @notice Emitted when a currency is added to or removed from the ModuleGlobals whitelist.
     *
     * @param currency The currency address.
     * @param prevWhitelisted Whether or not the currency was previously whitelisted.
     * @param whitelisted Whether or not the currency is whitelisted.
     * @param timestamp The current block timestamp.
     */
    event ModuleGlobalsCurrencyWhitelisted(
        address indexed currency,
        bool indexed prevWhitelisted,
        bool indexed whitelisted,
        uint256 timestamp
    );

    /**
     * @notice Emitted when a module inheriting from the `FeeModuleBase` is constructed.
     *
     * @param moduleGlobals The ModuleGlobals contract address used.
     * @param timestamp The current block timestamp.
     */
    event FeeModuleBaseConstructed(address indexed moduleGlobals, uint256 timestamp);

    /**
     * @notice Emitted when a module inheriting from the `ModuleBase` is constructed.
     *
     * @param hub The LensHub contract address used.
     * @param timestamp The current block timestamp.
     */
    event ModuleBaseConstructed(address indexed hub, uint256 timestamp);

    /**
     * @notice Emitted when one or multiple addresses are approved (or disapproved) for following in
     * the `ApprovalFollowModule`.
     *
     * @param owner The profile owner who executed the approval.
     * @param profileId The profile ID that the follow approvals are granted/revoked for.
     * @param addresses The addresses that have had the follow approvals grnated/revoked.
     * @param approved Whether each corresponding address is now approved or disapproved.
     * @param timestamp The current block timestamp.
     */
    event FollowsApproved(
        address indexed owner,
        uint256 indexed profileId,
        address[] addresses,
        bool[] approved,
        uint256 timestamp
    );

    /**
     * @dev Emitted when the user wants to enable or disable follows in the `LensPeriphery`.
     *
     * @param owner The profile owner who executed the toggle.
     * @param profileIds The array of token IDs of the profiles each followNFT is associated with.
     * @param enabled The array of whether each FollowNFT's follow is enabled/disabled.
     * @param timestamp The current block timestamp.
     */
    event FollowsToggled(
        address indexed owner,
        uint256[] profileIds,
        bool[] enabled,
        uint256 timestamp
    );

    /**
     * @dev Emitted when the metadata associated with a profile is set in the `LensPeriphery`.
     *
     * @param profileId The profile ID the metadata is set for.
     * @param metadata The metadata set for the profile and user.
     * @param timestamp The current block timestamp.
     */
    event ProfileMetadataSet(uint256 indexed profileId, string metadata, uint256 timestamp);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.10;

import {ILensNFTBase} from '../../interfaces/ILensNFTBase.sol';
import {Errors} from '../../libraries/Errors.sol';
import {DataTypes} from '../../libraries/DataTypes.sol';
import {Events} from '../../libraries/Events.sol';
import {ERC721Time} from './ERC721Time.sol';
import {ERC721Enumerable} from './ERC721Enumerable.sol';

/**
 * @title LensNFTBase
 * @author Lens Protocol
 *
 * @notice This is an abstract base contract to be inherited by other Lens Protocol NFTs, it includes
 * the slightly modified ERC721Enumerable, which itself inherits from the ERC721Time-- which adds an
 * internal operator approval setter, stores the mint timestamp for each token, and replaces the
 * constructor with an initializer.
 */
abstract contract LensNFTBase is ERC721Enumerable, ILensNFTBase {
    bytes32 internal constant EIP712_REVISION_HASH = keccak256('1');
    bytes32 internal constant PERMIT_TYPEHASH =
        keccak256('Permit(address spender,uint256 tokenId,uint256 nonce,uint256 deadline)');
    bytes32 internal constant PERMIT_FOR_ALL_TYPEHASH =
        keccak256(
            'PermitForAll(address owner,address operator,bool approved,uint256 nonce,uint256 deadline)'
        );
    bytes32 internal constant BURN_WITH_SIG_TYPEHASH =
        keccak256('BurnWithSig(uint256 tokenId,uint256 nonce,uint256 deadline)');
    bytes32 internal constant EIP712_DOMAIN_TYPEHASH =
        keccak256(
            'EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)'
        );

    mapping(address => uint256) public sigNonces;

    /**
     * @notice Initializer sets the name, symbol and the cached domain separator.
     *
     * NOTE: Inheritor contracts *must* call this function to initialize the name & symbol in the
     * inherited ERC721 contract.
     *
     * @param name The name to set in the ERC721 contract.
     * @param symbol The symbol to set in the ERC721 contract.
     */
    function _initialize(string calldata name, string calldata symbol) internal {
        ERC721Time.__ERC721_Init(name, symbol);

        emit Events.BaseInitialized(name, symbol, block.timestamp);
    }

    /// @inheritdoc ILensNFTBase
    function permit(
        address spender,
        uint256 tokenId,
        DataTypes.EIP712Signature calldata sig
    ) external override {
        if (spender == address(0)) revert Errors.ZeroSpender();
        address owner = ownerOf(tokenId);
        unchecked {
            _validateRecoveredAddress(
                _calculateDigest(
                    keccak256(
                        abi.encode(
                            PERMIT_TYPEHASH,
                            spender,
                            tokenId,
                            sigNonces[owner]++,
                            sig.deadline
                        )
                    )
                ),
                owner,
                sig
            );
        }
        _approve(spender, tokenId);
    }

    /// @inheritdoc ILensNFTBase
    function permitForAll(
        address owner,
        address operator,
        bool approved,
        DataTypes.EIP712Signature calldata sig
    ) external override {
        if (operator == address(0)) revert Errors.ZeroSpender();
        unchecked {
            _validateRecoveredAddress(
                _calculateDigest(
                    keccak256(
                        abi.encode(
                            PERMIT_FOR_ALL_TYPEHASH,
                            owner,
                            operator,
                            approved,
                            sigNonces[owner]++,
                            sig.deadline
                        )
                    )
                ),
                owner,
                sig
            );
        }
        _setOperatorApproval(owner, operator, approved);
    }

    /// @inheritdoc ILensNFTBase
    function getDomainSeparator() external view override returns (bytes32) {
        return _calculateDomainSeparator();
    }

    /// @inheritdoc ILensNFTBase
    function burn(uint256 tokenId) public virtual override {
        if (!_isApprovedOrOwner(msg.sender, tokenId)) revert Errors.NotOwnerOrApproved();
        _burn(tokenId);
    }

    /// @inheritdoc ILensNFTBase
    function burnWithSig(uint256 tokenId, DataTypes.EIP712Signature calldata sig)
        public
        virtual
        override
    {
        address owner = ownerOf(tokenId);
        unchecked {
            _validateRecoveredAddress(
                _calculateDigest(
                    keccak256(
                        abi.encode(
                            BURN_WITH_SIG_TYPEHASH,
                            tokenId,
                            sigNonces[owner]++,
                            sig.deadline
                        )
                    )
                ),
                owner,
                sig
            );
        }
        _burn(tokenId);
    }

    /**
     * @dev Wrapper for ecrecover to reduce code size, used in meta-tx specific functions.
     */
    function _validateRecoveredAddress(
        bytes32 digest,
        address expectedAddress,
        DataTypes.EIP712Signature calldata sig
    ) internal view {
        if (sig.deadline < block.timestamp) revert Errors.SignatureExpired();
        address recoveredAddress = ecrecover(digest, sig.v, sig.r, sig.s);
        if (recoveredAddress == address(0) || recoveredAddress != expectedAddress)
            revert Errors.SignatureInvalid();
    }

    /**
     * @dev Calculates EIP712 DOMAIN_SEPARATOR based on the current contract and chain ID.
     */
    function _calculateDomainSeparator() internal view returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    EIP712_DOMAIN_TYPEHASH,
                    keccak256(bytes(name())),
                    EIP712_REVISION_HASH,
                    block.chainid,
                    address(this)
                )
            );
    }

    /**
     * @dev Calculates EIP712 digest based on the current DOMAIN_SEPARATOR.
     *
     * @param hashedMessage The message hash from which the digest should be calculated.
     *
     * @return bytes32 A 32-byte output representing the EIP712 digest.
     */
    function _calculateDigest(bytes32 hashedMessage) internal view returns (bytes32) {
        bytes32 digest;
        unchecked {
            digest = keccak256(
                abi.encodePacked('\x19\x01', _calculateDomainSeparator(), hashedMessage)
            );
        }
        return digest;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import './ERC721Time.sol';
import '@openzeppelin/contracts/token/ERC721/extensions/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.
 *
 * NOTE: Modified from Openzeppelin to inherit from a modified ERC721 contract.
 */
abstract contract ERC721Enumerable is ERC721Time, 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, ERC721Time)
        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 < ERC721Time.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 Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual override {
        super._beforeTokenTransfer(from, to, tokenId);

        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 = ERC721Time.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 = ERC721Time.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 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

pragma solidity 0.8.10;

/**
 * @title DataTypes
 * @author Lens Protocol
 *
 * @notice A standard library of data types used throughout the Lens Protocol.
 */
library DataTypes {
    /**
     * @notice An enum containing the different states the protocol can be in, limiting certain actions.
     *
     * @param Unpaused The fully unpaused state.
     * @param PublishingPaused The state where only publication creation functions are paused.
     * @param Paused The fully paused state.
     */
    enum ProtocolState {
        Unpaused,
        PublishingPaused,
        Paused
    }

    /**
     * @notice An enum specifically used in a helper function to easily retrieve the publication type for integrations.
     *
     * @param Post A standard post, having a URI, a collect module but no pointer to another publication.
     * @param Comment A comment, having a URI, a collect module and a pointer to another publication.
     * @param Mirror A mirror, having a pointer to another publication, but no URI or collect module.
     * @param Nonexistent An indicator showing the queried publication does not exist.
     */
    enum PubType {
        Post,
        Comment,
        Mirror,
        Nonexistent
    }

    /**
     * @notice A struct containing the necessary information to reconstruct an EIP-712 typed data signature.
     *
     * @param v The signature's recovery parameter.
     * @param r The signature's r parameter.
     * @param s The signature's s parameter
     * @param deadline The signature's deadline
     */
    struct EIP712Signature {
        uint8 v;
        bytes32 r;
        bytes32 s;
        uint256 deadline;
    }

    /**
     * @notice A struct containing profile data.
     *
     * @param pubCount The number of publications made to this profile.
     * @param followModule The address of the current follow module in use by this profile, can be empty.
     * @param followNFT The address of the followNFT associated with this profile, can be empty..
     * @param handle The profile's associated handle.
     * @param imageURI The URI to be used for the profile's image.
     * @param followNFTURI The URI to be used for the follow NFT.
     */
    struct ProfileStruct {
        uint256 pubCount;
        address followModule;
        address followNFT;
        string handle;
        string imageURI;
        string followNFTURI;
    }

    /**
     * @notice A struct containing data associated with each new publication.
     *
     * @param profileIdPointed The profile token ID this publication points to, for mirrors and comments.
     * @param pubIdPointed The publication ID this publication points to, for mirrors and comments.
     * @param contentURI The URI associated with this publication.
     * @param referenceModule The address of the current reference module in use by this profile, can be empty.
     * @param collectModule The address of the collect module associated with this publication, this exists for all publication.
     * @param collectNFT The address of the collectNFT associated with this publication, if any.
     */
    struct PublicationStruct {
        uint256 profileIdPointed;
        uint256 pubIdPointed;
        string contentURI;
        address referenceModule;
        address collectModule;
        address collectNFT;
    }

    /**
     * @notice A struct containing the parameters required for the `createProfile()` function.
     *
     * @param to The address receiving the profile.
     * @param handle The handle to set for the profile, must be unique and non-empty.
     * @param imageURI The URI to set for the profile image.
     * @param followModule The follow module to use, can be the zero address.
     * @param followModuleInitData The follow module initialization data, if any.
     * @param followNFTURI The URI to use for the follow NFT.
     */
    struct CreateProfileData {
        address to;
        string handle;
        string imageURI;
        address followModule;
        bytes followModuleInitData;
        string followNFTURI;
    }

    /**
     * @notice A struct containing the parameters required for the `setDefaultProfileWithSig()` function. Parameters are
     * the same as the regular `setDefaultProfile()` function, with an added EIP712Signature.
     *
     * @param wallet The address of the wallet setting the default profile.
     * @param profileId The token ID of the profile which will be set as default, or zero.
     * @param sig The EIP712Signature struct containing the profile owner's signature.
     */
    struct SetDefaultProfileWithSigData {
        address wallet;
        uint256 profileId;
        EIP712Signature sig;
    }

    /**
     * @notice A struct containing the parameters required for the `setFollowModuleWithSig()` function. Parameters are
     * the same as the regular `setFollowModule()` function, with an added EIP712Signature.
     *
     * @param profileId The token ID of the profile to change the followModule for.
     * @param followModule The followModule to set for the given profile, must be whitelisted.
     * @param followModuleInitData The data to be passed to the followModule for initialization.
     * @param sig The EIP712Signature struct containing the profile owner's signature.
     */
    struct SetFollowModuleWithSigData {
        uint256 profileId;
        address followModule;
        bytes followModuleInitData;
        EIP712Signature sig;
    }

    /**
     * @notice A struct containing the parameters required for the `setDispatcherWithSig()` function. Parameters are the same
     * as the regular `setDispatcher()` function, with an added EIP712Signature.
     *
     * @param profileId The token ID of the profile to set the dispatcher for.
     * @param dispatcher The dispatcher address to set for the profile.
     * @param sig The EIP712Signature struct containing the profile owner's signature.
     */
    struct SetDispatcherWithSigData {
        uint256 profileId;
        address dispatcher;
        EIP712Signature sig;
    }

    /**
     * @notice A struct containing the parameters required for the `setProfileImageURIWithSig()` function. Parameters are the same
     * as the regular `setProfileImageURI()` function, with an added EIP712Signature.
     *
     * @param profileId The token ID of the profile to set the URI for.
     * @param imageURI The URI to set for the given profile image.
     * @param sig The EIP712Signature struct containing the profile owner's signature.
     */
    struct SetProfileImageURIWithSigData {
        uint256 profileId;
        string imageURI;
        EIP712Signature sig;
    }

    /**
     * @notice A struct containing the parameters required for the `setFollowNFTURIWithSig()` function. Parameters are the same
     * as the regular `setFollowNFTURI()` function, with an added EIP712Signature.
     *
     * @param profileId The token ID of the profile for which to set the followNFT URI.
     * @param followNFTURI The follow NFT URI to set.
     * @param sig The EIP712Signature struct containing the followNFT's associated profile owner's signature.
     */
    struct SetFollowNFTURIWithSigData {
        uint256 profileId;
        string followNFTURI;
        EIP712Signature sig;
    }

    /**
     * @notice A struct containing the parameters required for the `post()` function.
     *
     * @param profileId The token ID of the profile to publish to.
     * @param contentURI The URI to set for this new publication.
     * @param collectModule The collect module to set for this new publication.
     * @param collectModuleInitData The data to pass to the collect module's initialization.
     * @param referenceModule The reference module to set for the given publication, must be whitelisted.
     * @param referenceModuleInitData The data to be passed to the reference module for initialization.
     */
    struct PostData {
        uint256 profileId;
        string contentURI;
        address collectModule;
        bytes collectModuleInitData;
        address referenceModule;
        bytes referenceModuleInitData;
    }

    /**
     * @notice A struct containing the parameters required for the `postWithSig()` function. Parameters are the same as
     * the regular `post()` function, with an added EIP712Signature.
     *
     * @param profileId The token ID of the profile to publish to.
     * @param contentURI The URI to set for this new publication.
     * @param collectModule The collectModule to set for this new publication.
     * @param collectModuleInitData The data to pass to the collectModule's initialization.
     * @param referenceModule The reference module to set for the given publication, must be whitelisted.
     * @param referenceModuleInitData The data to be passed to the reference module for initialization.
     * @param sig The EIP712Signature struct containing the profile owner's signature.
     */
    struct PostWithSigData {
        uint256 profileId;
        string contentURI;
        address collectModule;
        bytes collectModuleInitData;
        address referenceModule;
        bytes referenceModuleInitData;
        EIP712Signature sig;
    }

    /**
     * @notice A struct containing the parameters required for the `comment()` function.
     *
     * @param profileId The token ID of the profile to publish to.
     * @param contentURI The URI to set for this new publication.
     * @param profileIdPointed The profile token ID to point the comment to.
     * @param pubIdPointed The publication ID to point the comment to.
     * @param referenceModuleData The data passed to the reference module.
     * @param collectModule The collect module to set for this new publication.
     * @param collectModuleInitData The data to pass to the collect module's initialization.
     * @param referenceModule The reference module to set for the given publication, must be whitelisted.
     * @param referenceModuleInitData The data to be passed to the reference module for initialization.
     */
    struct CommentData {
        uint256 profileId;
        string contentURI;
        uint256 profileIdPointed;
        uint256 pubIdPointed;
        bytes referenceModuleData;
        address collectModule;
        bytes collectModuleInitData;
        address referenceModule;
        bytes referenceModuleInitData;
    }

    /**
     * @notice A struct containing the parameters required for the `commentWithSig()` function. Parameters are the same as
     * the regular `comment()` function, with an added EIP712Signature.
     *
     * @param profileId The token ID of the profile to publish to.
     * @param contentURI The URI to set for this new publication.
     * @param profileIdPointed The profile token ID to point the comment to.
     * @param pubIdPointed The publication ID to point the comment to.
     * @param referenceModuleData The data passed to the reference module.
     * @param collectModule The collectModule to set for this new publication.
     * @param collectModuleInitData The data to pass to the collectModule's initialization.
     * @param referenceModule The reference module to set for the given publication, must be whitelisted.
     * @param referenceModuleInitData The data to be passed to the reference module for initialization.
     * @param sig The EIP712Signature struct containing the profile owner's signature.
     */
    struct CommentWithSigData {
        uint256 profileId;
        string contentURI;
        uint256 profileIdPointed;
        uint256 pubIdPointed;
        bytes referenceModuleData;
        address collectModule;
        bytes collectModuleInitData;
        address referenceModule;
        bytes referenceModuleInitData;
        EIP712Signature sig;
    }

    /**
     * @notice A struct containing the parameters required for the `mirror()` function.
     *
     * @param profileId The token ID of the profile to publish to.
     * @param profileIdPointed The profile token ID to point the mirror to.
     * @param pubIdPointed The publication ID to point the mirror to.
     * @param referenceModuleData The data passed to the reference module.
     * @param referenceModule The reference module to set for the given publication, must be whitelisted.
     * @param referenceModuleInitData The data to be passed to the reference module for initialization.
     */
    struct MirrorData {
        uint256 profileId;
        uint256 profileIdPointed;
        uint256 pubIdPointed;
        bytes referenceModuleData;
        address referenceModule;
        bytes referenceModuleInitData;
    }

    /**
     * @notice A struct containing the parameters required for the `mirrorWithSig()` function. Parameters are the same as
     * the regular `mirror()` function, with an added EIP712Signature.
     *
     * @param profileId The token ID of the profile to publish to.
     * @param profileIdPointed The profile token ID to point the mirror to.
     * @param pubIdPointed The publication ID to point the mirror to.
     * @param referenceModuleData The data passed to the reference module.
     * @param referenceModule The reference module to set for the given publication, must be whitelisted.
     * @param referenceModuleInitData The data to be passed to the reference module for initialization.
     * @param sig The EIP712Signature struct containing the profile owner's signature.
     */
    struct MirrorWithSigData {
        uint256 profileId;
        uint256 profileIdPointed;
        uint256 pubIdPointed;
        bytes referenceModuleData;
        address referenceModule;
        bytes referenceModuleInitData;
        EIP712Signature sig;
    }

    /**
     * @notice A struct containing the parameters required for the `followWithSig()` function. Parameters are the same
     * as the regular `follow()` function, with the follower's (signer) address and an EIP712Signature added.
     *
     * @param follower The follower which is the message signer.
     * @param profileIds The array of token IDs of the profiles to follow.
     * @param datas The array of arbitrary data to pass to the followModules if needed.
     * @param sig The EIP712Signature struct containing the follower's signature.
     */
    struct FollowWithSigData {
        address follower;
        uint256[] profileIds;
        bytes[] datas;
        EIP712Signature sig;
    }

    /**
     * @notice A struct containing the parameters required for the `collectWithSig()` function. Parameters are the same as
     * the regular `collect()` function, with the collector's (signer) address and an EIP712Signature added.
     *
     * @param collector The collector which is the message signer.
     * @param profileId The token ID of the profile that published the publication to collect.
     * @param pubId The publication to collect's publication ID.
     * @param data The arbitrary data to pass to the collectModule if needed.
     * @param sig The EIP712Signature struct containing the collector's signature.
     */
    struct CollectWithSigData {
        address collector;
        uint256 profileId;
        uint256 pubId;
        bytes data;
        EIP712Signature sig;
    }

    /**
     * @notice A struct containing the parameters required for the `setProfileMetadataWithSig()` function.
     *
     * @param profileId The profile ID for which to set the metadata.
     * @param metadata The metadata string to set for the profile and user.
     * @param sig The EIP712Signature struct containing the user's signature.
     */
    struct SetProfileMetadataWithSigData {
        uint256 profileId;
        string metadata;
        EIP712Signature sig;
    }

    /**
     * @notice A struct containing the parameters required for the `toggleFollowWithSig()` function.
     *
     * @param follower The follower which is the message signer.
     * @param profileIds The token ID array of the profiles.
     * @param enables The array of booleans to enable/disable follows.
     * @param sig The EIP712Signature struct containing the follower's signature.
     */
    struct ToggleFollowWithSigData {
        address follower;
        uint256[] profileIds;
        bool[] enables;
        EIP712Signature sig;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.10;

import {DataTypes} from '../libraries/DataTypes.sol';

/**
 * @title ILensNFTBase
 * @author Lens Protocol
 *
 * @notice This is the interface for the LensNFTBase contract, from which all Lens NFTs inherit.
 * It is an expansion of a very slightly modified ERC721Enumerable contract, which allows expanded
 * meta-transaction functionality.
 */
interface ILensNFTBase {
    /**
     * @notice Implementation of an EIP-712 permit function for an ERC-721 NFT. We don't need to check
     * if the tokenId exists, since the function calls ownerOf(tokenId), which reverts if the tokenId does
     * not exist.
     *
     * @param spender The NFT spender.
     * @param tokenId The NFT token ID to approve.
     * @param sig The EIP712 signature struct.
     */
    function permit(
        address spender,
        uint256 tokenId,
        DataTypes.EIP712Signature calldata sig
    ) external;

    /**
     * @notice Implementation of an EIP-712 permit-style function for ERC-721 operator approvals. Allows
     * an operator address to control all NFTs a given owner owns.
     *
     * @param owner The owner to set operator approvals for.
     * @param operator The operator to approve.
     * @param approved Whether to approve or revoke approval from the operator.
     * @param sig The EIP712 signature struct.
     */
    function permitForAll(
        address owner,
        address operator,
        bool approved,
        DataTypes.EIP712Signature calldata sig
    ) external;

    /**
     * @notice Burns an NFT, removing it from circulation and essentially destroying it. This function can only
     * be called by the NFT to burn's owner.
     *
     * @param tokenId The token ID of the token to burn.
     */
    function burn(uint256 tokenId) external;

    /**
     * @notice Implementation of an EIP-712 permit-style function for token burning. Allows anyone to burn
     * a token on behalf of the owner with a signature.
     *
     * @param tokenId The token ID of the token to burn.
     * @param sig The EIP712 signature struct.
     */
    function burnWithSig(uint256 tokenId, DataTypes.EIP712Signature calldata sig) external;

    /**
     * @notice Returns the domain separator for this NFT contract.
     *
     * @return bytes32 The domain separator.
     */
    function getDomainSeparator() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import './IERC721Time.sol';
import '@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol';
import '@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol';
import '@openzeppelin/contracts/utils/Address.sol';
import '@openzeppelin/contracts/utils/Context.sol';
import '@openzeppelin/contracts/utils/Strings.sol';
import '@openzeppelin/contracts/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}.
 *
 * Modifications:
 * 1. Refactored _operatorApprovals setter into an internal function to allow meta-transactions.
 * 2. Constructor replaced with an initializer.
 * 3. Mint timestamp is now stored in a TokenData struct alongside the owner address.
 */
abstract contract ERC721Time is Context, ERC165, IERC721Time, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to token Data (owner address and mint timestamp uint96), this
    // replaces the original mapping(uint256 => address) private _owners;
    mapping(uint256 => IERC721Time.TokenData) private _tokenData;

    // 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 ERC721 name and symbol.
     *
     * @param name The name to set.
     * @param symbol The symbol to set.
     */
    function __ERC721_Init(string calldata name, string calldata symbol) internal {
        _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: balance query for the zero address');
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _tokenData[tokenId].owner;
        require(owner != address(0), 'ERC721: owner query for nonexistent token');
        return owner;
    }

    /**
     * @dev See {IERC721Time-mintTimestampOf}
     */
    function mintTimestampOf(uint256 tokenId) public view virtual override returns (uint256) {
        uint96 mintTimestamp = _tokenData[tokenId].mintTimestamp;
        require(mintTimestamp != 0, 'ERC721: mint timestamp query for nonexistent token');
        return mintTimestamp;
    }

    /**
     * @dev See {IERC721Time-mintTimestampOf}
     */
    function tokenDataOf(uint256 tokenId)
        public
        view
        virtual
        override
        returns (IERC721Time.TokenData memory)
    {
        require(_exists(tokenId), 'ERC721: token data query for nonexistent token');
        return _tokenData[tokenId];
    }

    /**
     * @dev See {IERC721Time-exists}
     */
    function exists(uint256 tokenId) public view virtual override returns (bool) {
        return _exists(tokenId);
    }

    /**
     * @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) {
        require(_exists(tokenId), 'ERC721Metadata: URI query for nonexistent token');

        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 overriden 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 = ERC721Time.ownerOf(tokenId);
        require(to != owner, 'ERC721: approval to current owner');

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            'ERC721: approve caller is not owner nor approved for all'
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), 'ERC721: approved query for nonexistent token');

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        require(operator != _msgSender(), 'ERC721: approve to caller');

        _setOperatorApproval(_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: transfer caller is not owner nor 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: transfer caller is not owner nor 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 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 _tokenData[tokenId].owner != 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)
    {
        require(_exists(tokenId), 'ERC721: operator query for nonexistent token');
        address owner = ERC721Time.ownerOf(tokenId);
        return (spender == owner ||
            getApproved(tokenId) == spender ||
            isApprovedForAll(owner, 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);

        _balances[to] += 1;
        _tokenData[tokenId].owner = to;
        _tokenData[tokenId].mintTimestamp = uint96(block.timestamp);

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

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721Time.ownerOf(tokenId);

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

        // Clear approvals
        _approve(address(0), tokenId);

        _balances[owner] -= 1;
        delete _tokenData[tokenId];

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

    /**
     * @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(ERC721Time.ownerOf(tokenId) == from, 'ERC721: transfer of token that is not own');
        require(to != address(0), 'ERC721: transfer to the zero address');

        _beforeTokenTransfer(from, to, tokenId);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _balances[from] -= 1;
        _balances[to] += 1;
        _tokenData[tokenId].owner = to;

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721Time.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Refactored from the original OZ ERC721 implementation: approve or revoke approval from
     * `operator` to operate on all tokens owned by `owner`.
     *
     * Emits a {ApprovalForAll} event.
     */
    function _setOperatorApproval(
        address owner,
        address operator,
        bool approved
    ) internal virtual {
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Private 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 {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import '@openzeppelin/contracts/token/ERC721/IERC721.sol';

/**
 * @title IERC721Time
 * @author Lens Protocol
 *
 * @notice This is an expansion of the IERC721 interface that includes a struct for token data,
 * which contains the token owner and the mint timestamp as well as associated getters.
 */
interface IERC721Time is IERC721 {
    /**
     * @notice Contains the owner address and the mint timestamp for every NFT.
     *
     * Note: Instead of the owner address in the _tokenOwners private mapping, we now store it in the
     * _tokenData mapping, alongside the unchanging mintTimestamp.
     *
     * @param owner The token owner.
     * @param mintTimestamp The mint timestamp.
     */
    struct TokenData {
        address owner;
        uint96 mintTimestamp;
    }

    /**
     * @notice Returns the mint timestamp associated with a given NFT, stored only once upon initial mint.
     *
     * @param tokenId The token ID of the NFT to query the mint timestamp for.
     *
     * @return uint256 mint timestamp, this is stored as a uint96 but returned as a uint256 to reduce unnecessary
     * padding.
     */
    function mintTimestampOf(uint256 tokenId) external view returns (uint256);

    /**
     * @notice Returns the token data associated with a given NFT. This allows fetching the token owner and
     * mint timestamp in a single call.
     *
     * @param tokenId The token ID of the NFT to query the token data for.
     *
     * @return TokenData token data struct containing both the owner address and the mint timestamp.
     */
    function tokenDataOf(uint256 tokenId) external view returns (TokenData memory);

    /**
     * @notice Returns whether a token with the given token ID exists.
     *
     * @param tokenId The token ID of the NFT to check existence for.
     *
     * @return bool True if the token exists.
     */
    function exists(uint256 tokenId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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 `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// 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 v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

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

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

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

pragma solidity ^0.8.0;

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

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

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

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @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] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// 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 v4.5.0) (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);
}

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

[{"inputs":[{"internalType":"address","name":"hub","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"InitParamsInvalid","type":"error"},{"inputs":[],"name":"Initialized","type":"error"},{"inputs":[],"name":"InvalidParameter","type":"error"},{"inputs":[],"name":"NotHub","type":"error"},{"inputs":[],"name":"NotOwnerOrApproved","type":"error"},{"inputs":[],"name":"NotProfileOwner","type":"error"},{"inputs":[],"name":"SignatureExpired","type":"error"},{"inputs":[],"name":"SignatureInvalid","type":"error"},{"inputs":[],"name":"TokenDoesNotExist","type":"error"},{"inputs":[],"name":"ZeroSpender","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"HUB","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"components":[{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"internalType":"struct DataTypes.EIP712Signature","name":"sig","type":"tuple"}],"name":"burnWithSig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"exists","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getDomainSeparator","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getSourcePublicationPointer","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"profileId","type":"uint256"},{"internalType":"uint256","name":"pubId","type":"uint256"},{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"mint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"mintTimestampOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"components":[{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"internalType":"struct DataTypes.EIP712Signature","name":"sig","type":"tuple"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"},{"components":[{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"internalType":"struct DataTypes.EIP712Signature","name":"sig","type":"tuple"}],"name":"permitForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"salePrice","type":"uint256"}],"name":"royaltyInfo","outputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"royaltyBasisPoints","type":"uint256"}],"name":"setRoyalty","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"sigNonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenDataOf","outputs":[{"components":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint96","name":"mintTimestamp","type":"uint96"}],"internalType":"struct IERC721Time.TokenData","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"}]