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// SPDX-License-Identifier: MIT

pragma solidity ^0.8.18;

import {ERC721} from '@openzeppelin/contracts/token/ERC721/ERC721.sol';
import {ImmutableOwnable} from 'contracts/misc/ImmutableOwnable.sol';
import {ILensHandles} from 'contracts/interfaces/ILensHandles.sol';
import {HandlesEvents} from 'contracts/namespaces/constants/Events.sol';
import {HandlesErrors} from 'contracts/namespaces/constants/Errors.sol';
import {IHandleTokenURI} from 'contracts/interfaces/IHandleTokenURI.sol';
import {ILensHub} from 'contracts/interfaces/ILensHub.sol';
import {Address} from '@openzeppelin/contracts/utils/Address.sol';
import {IERC721} from '@openzeppelin/contracts/token/ERC721/IERC721.sol';
import {ERC2981CollectionRoyalties} from 'contracts/base/ERC2981CollectionRoyalties.sol';
import {IERC165} from '@openzeppelin/contracts/utils/introspection/IERC165.sol';

/**
 * A handle is defined as a local name inside a namespace context. A handle is represented as the local name with its
 * namespace applied as a prefix, using the slash symbol as separator.
 *
 *      handle = namespace /@ localName
 *
 * Handle and local name can be used interchangeably once you are in a context of a namespace, as it became redundant.
 *
 *      handle === ${localName} ; inside some namespace.
 *
 * @custom:upgradeable Transparent upgradeable proxy without initializer.
 */
contract LensHandles is ERC721, ERC2981CollectionRoyalties, ImmutableOwnable, ILensHandles {
    using Address for address;

    // We used 31 to fit the handle in a single slot, with `.lens` that restricted localName to use 26 characters.
    // Can be extended later if needed.
    uint256 internal constant MAX_LOCAL_NAME_LENGTH = 26;
    string public constant NAMESPACE = 'lens';
    uint256 internal immutable NAMESPACE_LENGTH = bytes(NAMESPACE).length;
    bytes32 public constant NAMESPACE_HASH = keccak256(bytes(NAMESPACE));
    uint256 public immutable TOKEN_GUARDIAN_COOLDOWN;
    uint256 internal constant GUARDIAN_ENABLED = type(uint256).max;
    mapping(address => uint256) internal _tokenGuardianDisablingTimestamp;

    uint256 internal _profileRoyaltiesBps; // Slot 7
    uint256 private _totalSupply;

    mapping(uint256 tokenId => string localName) internal _localNames;

    address internal _handleTokenURIContract;

    modifier onlyOwnerOrWhitelistedProfileCreator() {
        if (msg.sender != OWNER && !ILensHub(LENS_HUB).isProfileCreatorWhitelisted(msg.sender)) {
            revert HandlesErrors.NotOwnerNorWhitelisted();
        }
        _;
    }

    modifier onlyEOA() {
        if (msg.sender.isContract()) {
            revert HandlesErrors.NotEOA();
        }
        _;
    }

    modifier onlyHub() {
        if (msg.sender != LENS_HUB) {
            revert HandlesErrors.NotHub();
        }
        _;
    }

    constructor(
        address owner,
        address lensHub,
        uint256 tokenGuardianCooldown
    ) ERC721('', '') ImmutableOwnable(owner, lensHub) {
        TOKEN_GUARDIAN_COOLDOWN = tokenGuardianCooldown;
    }

    function name() public pure override returns (string memory) {
        return 'Lens Handles';
    }

    function symbol() public pure override returns (string memory) {
        return 'LH';
    }

    function totalSupply() external view virtual override returns (uint256) {
        return _totalSupply;
    }

    function setHandleTokenURIContract(address handleTokenURIContract) external override onlyOwner {
        _handleTokenURIContract = handleTokenURIContract;
        emit HandlesEvents.BatchMetadataUpdate({fromTokenId: 0, toTokenId: type(uint256).max});
    }

    function getHandleTokenURIContract() external view override returns (address) {
        return _handleTokenURIContract;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view override returns (string memory) {
        _requireMinted(tokenId);
        return IHandleTokenURI(_handleTokenURIContract).getTokenURI(tokenId, _localNames[tokenId], NAMESPACE);
    }

    /// @inheritdoc ILensHandles
    function mintHandle(
        address to,
        string calldata localName
    ) external onlyOwnerOrWhitelistedProfileCreator returns (uint256) {
        _validateLocalName(localName);
        return _mintHandle(to, localName);
    }

    function migrateHandle(address to, string calldata localName) external onlyHub returns (uint256) {
        _validateLocalNameMigration(localName);
        return _mintHandle(to, localName);
    }

    function burn(uint256 tokenId) external {
        if (msg.sender != ownerOf(tokenId)) {
            revert HandlesErrors.NotOwner();
        }
        --_totalSupply;
        _burn(tokenId);
        delete _localNames[tokenId];
    }

    /// ************************************
    /// ****  TOKEN GUARDIAN FUNCTIONS  ****
    /// ************************************

    function DANGER__disableTokenGuardian() external override onlyEOA {
        if (_tokenGuardianDisablingTimestamp[msg.sender] != GUARDIAN_ENABLED) {
            revert HandlesErrors.DisablingAlreadyTriggered();
        }
        _tokenGuardianDisablingTimestamp[msg.sender] = block.timestamp + TOKEN_GUARDIAN_COOLDOWN;
        emit HandlesEvents.TokenGuardianStateChanged({
            wallet: msg.sender,
            enabled: false,
            tokenGuardianDisablingTimestamp: block.timestamp + TOKEN_GUARDIAN_COOLDOWN,
            timestamp: block.timestamp
        });
    }

    function enableTokenGuardian() external override onlyEOA {
        if (_tokenGuardianDisablingTimestamp[msg.sender] == GUARDIAN_ENABLED) {
            revert HandlesErrors.AlreadyEnabled();
        }
        _tokenGuardianDisablingTimestamp[msg.sender] = GUARDIAN_ENABLED;
        emit HandlesEvents.TokenGuardianStateChanged({
            wallet: msg.sender,
            enabled: true,
            tokenGuardianDisablingTimestamp: GUARDIAN_ENABLED,
            timestamp: block.timestamp
        });
    }

    function approve(address to, uint256 tokenId) public override(IERC721, ERC721) {
        // We allow removing approvals even if the wallet has the token guardian enabled
        if (to != address(0) && _hasTokenGuardianEnabled(ownerOf(tokenId))) {
            revert HandlesErrors.GuardianEnabled();
        }
        super.approve(to, tokenId);
    }

    function setApprovalForAll(address operator, bool approved) public override(IERC721, ERC721) {
        // We allow removing approvals even if the wallet has the token guardian enabled
        if (approved && _hasTokenGuardianEnabled(msg.sender)) {
            revert HandlesErrors.GuardianEnabled();
        }
        super.setApprovalForAll(operator, approved);
    }

    function exists(uint256 tokenId) external view override returns (bool) {
        return _exists(tokenId);
    }

    function getNamespace() external pure returns (string memory) {
        return NAMESPACE;
    }

    function getNamespaceHash() external pure returns (bytes32) {
        return NAMESPACE_HASH;
    }

    function getLocalName(uint256 tokenId) public view returns (string memory) {
        string memory localName = _localNames[tokenId];
        if (bytes(localName).length == 0) {
            revert HandlesErrors.DoesNotExist();
        }
        return _localNames[tokenId];
    }

    function getHandle(uint256 tokenId) public view returns (string memory) {
        string memory localName = getLocalName(tokenId);
        return string.concat(NAMESPACE, '/@', localName);
    }

    function getTokenId(string memory localName) public pure returns (uint256) {
        return uint256(keccak256(bytes(localName)));
    }

    function getTokenGuardianDisablingTimestamp(address wallet) external view override returns (uint256) {
        return _tokenGuardianDisablingTimestamp[wallet];
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(
        bytes4 interfaceId
    ) public view virtual override(ERC721, ERC2981CollectionRoyalties, IERC165) returns (bool) {
        return (ERC721.supportsInterface(interfaceId) || ERC2981CollectionRoyalties.supportsInterface(interfaceId));
    }

    //////////////////////////////////////
    ///        INTERNAL FUNCTIONS      ///
    //////////////////////////////////////

    function _mintHandle(address to, string calldata localName) internal returns (uint256) {
        uint256 tokenId = getTokenId(localName);
        ++_totalSupply;
        _mint(to, tokenId);
        _localNames[tokenId] = localName;
        emit HandlesEvents.HandleMinted(localName, NAMESPACE, tokenId, to, block.timestamp);
        return tokenId;
    }

    /// @dev This function is used to validate the local name when migrating from V1 to V2.
    ///      As in V1 we also allowed the Hyphen '-' character, we need to allow it here as well and use a separate
    ///      validation function for migration VS newly created handles.
    function _validateLocalNameMigration(string memory localName) internal pure {
        bytes memory localNameAsBytes = bytes(localName);
        uint256 localNameLength = localNameAsBytes.length;

        if (localNameLength == 0 || localNameLength > MAX_LOCAL_NAME_LENGTH) {
            revert HandlesErrors.HandleLengthInvalid();
        }

        bytes1 firstByte = localNameAsBytes[0];
        if (firstByte == '-' || firstByte == '_') {
            revert HandlesErrors.HandleFirstCharInvalid();
        }

        uint256 i;
        while (i < localNameLength) {
            if (!_isAlphaNumeric(localNameAsBytes[i]) && localNameAsBytes[i] != '-' && localNameAsBytes[i] != '_') {
                revert HandlesErrors.HandleContainsInvalidCharacters();
            }
            unchecked {
                ++i;
            }
        }
    }

    /// @dev In V2 we only accept the following characters: [a-z0-9_] to be used in newly created handles.
    ///      We also disallow the first character to be an underscore '_'.
    function _validateLocalName(string memory localName) internal pure {
        bytes memory localNameAsBytes = bytes(localName);
        uint256 localNameLength = localNameAsBytes.length;

        if (localNameLength == 0 || localNameLength > MAX_LOCAL_NAME_LENGTH) {
            revert HandlesErrors.HandleLengthInvalid();
        }

        if (localNameAsBytes[0] == '_') {
            revert HandlesErrors.HandleFirstCharInvalid();
        }

        uint256 i;
        while (i < localNameLength) {
            if (!_isAlphaNumeric(localNameAsBytes[i]) && localNameAsBytes[i] != '_') {
                revert HandlesErrors.HandleContainsInvalidCharacters();
            }
            unchecked {
                ++i;
            }
        }
    }

    /// @dev We only accept lowercase characters to avoid confusion.
    /// @param char The character to check.
    /// @return True if the character is alphanumeric, false otherwise.
    function _isAlphaNumeric(bytes1 char) internal pure returns (bool) {
        return (char >= '0' && char <= '9') || (char >= 'a' && char <= 'z');
    }

    function _hasTokenGuardianEnabled(address wallet) internal view returns (bool) {
        return
            !wallet.isContract() &&
            (_tokenGuardianDisablingTimestamp[wallet] == GUARDIAN_ENABLED ||
                block.timestamp < _tokenGuardianDisablingTimestamp[wallet]);
    }

    function _getRoyaltiesInBasisPointsSlot() internal pure override returns (uint256 slot) {
        assembly {
            slot := _profileRoyaltiesBps.slot
        }
    }

    function _getReceiver(uint256 /* tokenId */) internal view override returns (address) {
        return ILensHub(LENS_HUB).getTreasury();
    }

    function _beforeRoyaltiesSet(uint256 /* royaltiesInBasisPoints */) internal view override {
        if (msg.sender != OWNER) {
            revert OnlyOwner();
        }
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 /* firstTokenId */,
        uint256 batchSize
    ) internal override {
        if (from != address(0) && _hasTokenGuardianEnabled(from)) {
            // Cannot transfer handle if the guardian is enabled, except at minting time.
            revert HandlesErrors.GuardianEnabled();
        }

        super._beforeTokenTransfer(from, to, 0, batchSize);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import {Errors} from 'contracts/libraries/constants/Errors.sol';
import {IERC165} from '@openzeppelin/contracts/utils/introspection/IERC165.sol';
import {IERC2981} from '@openzeppelin/contracts/interfaces/IERC2981.sol';

abstract contract ERC2981CollectionRoyalties is IERC2981 {
    uint16 internal constant BASIS_POINTS = 10000;
    // bytes4(keccak256('royaltyInfo(uint256,uint256)')) == 0x2a55205a
    bytes4 internal constant INTERFACE_ID_ERC2981 = 0x2a55205a;

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

    /**
     * @notice Changes the royalty percentage for secondary sales.
     *
     * @param royaltiesInBasisPoints The royalty percentage (measured in basis points).
     */
    function setRoyalty(uint256 royaltiesInBasisPoints) external {
        _beforeRoyaltiesSet(royaltiesInBasisPoints);
        _setRoyalty(royaltiesInBasisPoints);
    }

    /**
     * @notice Called with the sale price to determine how much royalty is owed and to whom.
     *
     * @param tokenId The ID of the token queried for royalty information.
     * @param salePrice The sale price of the token specified.
     * @return A tuple with the address that 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 (_getReceiver(tokenId), _getRoyaltyAmount(tokenId, salePrice));
    }

    function _setRoyalty(uint256 royaltiesInBasisPoints) internal virtual {
        if (royaltiesInBasisPoints > BASIS_POINTS) {
            revert Errors.InvalidParameter();
        }
        _storeRoyaltiesInBasisPoints(royaltiesInBasisPoints);
    }

    function _getRoyaltyAmount(uint256 /* tokenId */, uint256 salePrice) internal view virtual returns (uint256) {
        return (salePrice * _loadRoyaltiesInBasisPoints()) / BASIS_POINTS;
    }

    function _storeRoyaltiesInBasisPoints(uint256 royaltiesInBasisPoints) internal virtual {
        uint256 royaltiesInBasisPointsSlot = _getRoyaltiesInBasisPointsSlot();
        assembly {
            sstore(royaltiesInBasisPointsSlot, royaltiesInBasisPoints)
        }
    }

    function _loadRoyaltiesInBasisPoints() internal view virtual returns (uint256) {
        uint256 royaltiesInBasisPointsSlot = _getRoyaltiesInBasisPointsSlot();
        uint256 royaltyAmount;
        assembly {
            royaltyAmount := sload(royaltiesInBasisPointsSlot)
        }
        return royaltyAmount;
    }

    function _beforeRoyaltiesSet(uint256 royaltiesInBasisPoints) internal view virtual;

    function _getRoyaltiesInBasisPointsSlot() internal view virtual returns (uint256);

    function _getReceiver(uint256 tokenId) internal view virtual returns (address);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

/**
 * @title IERC721Burnable
 * @author Lens Protocol
 *
 * @notice Extension of ERC-721 including a function that allows the token to be burned.
 */
interface IERC721Burnable {
    /**
     * @notice Burns an NFT, removing it from circulation and essentially destroying it.
     * @custom:permission Owner of the NFT.
     *
     * @param tokenId The token ID of the token to burn.
     */
    function burn(uint256 tokenId) external;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

/**
 * @title IERC721MetaTx
 * @author Lens Protocol
 *
 * @notice Extension of ERC-721 including meta-tx signatures related functions.
 */
interface IERC721MetaTx {
    /**
     * @notice Returns the current signature nonce of the given signer.
     *
     * @param signer The address for which to query the nonce.
     *
     * @return uint256 The current nonce of the given signer.
     */
    function nonces(address signer) external view returns (uint256);

    /**
     * @notice Returns the EIP-712 domain separator for this contract.
     *
     * @return bytes32 The domain separator.
     */
    function getDomainSeparator() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

import {Types} from 'contracts/libraries/constants/Types.sol';

/**
 * @title IERC721Timestamped
 * @author Lens Protocol
 *
 * @notice Extension of ERC-721 including a struct for token data, which contains the owner and the mint timestamp, as
 * well as their associated getters.
 */
interface IERC721Timestamped {
    /**
     * @notice Returns the mint timestamp associated with a given NFT.
     *
     * @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 A struct containing both the owner address and the mint timestamp.
     */
    function tokenDataOf(uint256 tokenId) external view returns (Types.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);

    /**
     * @notice Returns the amount of tokens in circulation.
     *
     * @return uint256 The current total supply of tokens.
     */
    function totalSupply() external view returns (uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.15;

interface IHandleTokenURI {
    function getTokenURI(
        uint256 tokenId,
        string memory localName,
        string memory namespace
    ) external view returns (string memory);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

import {IERC721} from '@openzeppelin/contracts/token/ERC721/IERC721.sol';
import {IERC721Timestamped} from 'contracts/interfaces/IERC721Timestamped.sol';
import {IERC721Burnable} from 'contracts/interfaces/IERC721Burnable.sol';
import {IERC721MetaTx} from 'contracts/interfaces/IERC721MetaTx.sol';
import {IERC721Metadata} from '@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol';

interface ILensERC721 is IERC721, IERC721Timestamped, IERC721Burnable, IERC721MetaTx, IERC721Metadata {}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

import {Types} from 'contracts/libraries/constants/Types.sol';

/**
 * @title ILensGovernable
 * @author Lens Protocol
 *
 * @notice This is the interface for the Lens Protocol main governance functions.
 */
interface ILensGovernable {
    /**
     * @notice Sets the privileged governance role.
     * @custom:permissions Governance.
     *
     * @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.
     * @custom:permissions Governance.
     *
     * @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.
     * @custom:permissions Governance or Emergency Admin. Emergency Admin can only restrict more.
     *
     * @param newState The state to set. It can be one of the following:
     *  - Unpaused: The protocol is fully operational.
     *  - PublishingPaused: The protocol is paused for publishing, but it is still operational for others operations.
     *  - Paused: The protocol is paused for all operations.
     */
    function setState(Types.ProtocolState newState) external;

    /**
     * @notice Adds or removes a profile creator from the whitelist.
     * @custom:permissions Governance.
     *
     * @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 Sets the profile token URI contract.
     * @custom:permissions Governance.
     *
     * @param profileTokenURIContract The profile token URI contract to set.
     */
    function setProfileTokenURIContract(address profileTokenURIContract) external;

    /**
     * @notice Sets the follow token URI contract.
     * @custom:permissions Governance.
     *
     * @param followTokenURIContract The follow token URI contract to set.
     */
    function setFollowTokenURIContract(address followTokenURIContract) external;

    /**
     * @notice Sets the treasury address.
     * @custom:permissions Governance
     *
     * @param newTreasury The new treasury address to set.
     */
    function setTreasury(address newTreasury) external;

    /**
     * @notice Sets the treasury fee.
     * @custom:permissions Governance
     *
     * @param newTreasuryFee The new treasury fee to set.
     */
    function setTreasuryFee(uint16 newTreasuryFee) external;

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

    /**
     * @notice Gets the state currently set in the protocol. It could be a global pause, a publishing pause or an
     * unpaused state.
     * @custom:permissions Anyone.
     *
     * @return Types.ProtocolState The state currently set in the protocol.
     */
    function getState() external view returns (Types.ProtocolState);

    /**
     * @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 the treasury address.
     *
     * @return address The treasury address.
     */
    function getTreasury() external view returns (address);

    /**
     * @notice Returns the treasury fee.
     *
     * @return uint16 The treasury fee.
     */
    function getTreasuryFee() external view returns (uint16);

    /**
     * @notice Returns the treasury address and treasury fee in a single call.
     *
     * @return tuple First, the treasury address, second, the treasury fee.
     */
    function getTreasuryData() external view returns (address, uint16);

    /**
     * @notice Gets the profile token URI contract.
     *
     * @return address The profile token URI contract.
     */
    function getProfileTokenURIContract() external view returns (address);

    /**
     * @notice Gets the follow token URI contract.
     *
     * @return address The follow token URI contract.
     */
    function getFollowTokenURIContract() external view returns (address);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

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

/**
 * @title ILensHandles
 * @author Lens Protocol
 *
 * @notice This is the interface for the LensHandles contract that is responsible for minting and burning handle NFTs.
 * A handle is composed of a local name and a namespace, separated by a dot.
 * Example: `satoshi.lens` is a handle composed of the local name `satoshi` and the namespace `lens`.
 */
interface ILensHandles is IERC721 {
    /**
     * @notice Mints a handle NFT in the given namespace.
     * @custom:permissions Only LensHandles contract's owner or LensHub.
     *
     * @param to The address to mint the handle to.
     * @param localName The local name of the handle (the part before ".lens").
     *
     * @return uint256 The ID of the handle NFT minted.
     */
    function mintHandle(address to, string calldata localName) external returns (uint256);

    /**
     * @notice Burns a handle NFT.
     * @custom:permissions Owner of Handle NFT.
     *
     * @param tokenId The ID of the handle NFT to burn.
     */
    function burn(uint256 tokenId) external;

    /**
     * @notice Gets the namespace of the contract. It's 'lens' for the LensHandles contract.
     *
     * @return string The namespace of the contract.
     */
    function getNamespace() external pure returns (string memory);

    /**
     * @notice Gets the hash of the namespace of the contract. It's keccak256('lens') for the LensHandles contract.
     *
     * @return bytes32 The hash of the namespace of the contract.
     */
    function getNamespaceHash() external pure returns (bytes32);

    /**
     * @notice Returns whether `tokenId` exists.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     *
     * @return bool Whether the token exists.
     */
    function exists(uint256 tokenId) external view returns (bool);

    /**
     * @notice Returns the amount of tokens in circulation.
     *
     * @return uint256 The current total supply of tokens.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @notice Returns the HandleTokenURI contract address.
     *
     * @return address The HandleTokenURI contract address.
     */
    function getHandleTokenURIContract() external view returns (address);

    /**
     * @notice Sets the HandleTokenURI contract address.
     * @custom:permissions Only LensHandles contract's owner
     *
     * @param handleTokenURIContract The HandleTokenURI contract address to set.
     */
    function setHandleTokenURIContract(address handleTokenURIContract) external;

    /**
     * @notice DANGER: Triggers disabling the profile protection mechanism for the msg.sender, which will allow
     * transfers or approvals over profiles held by it.
     * Disabling the mechanism will have a timelock before it becomes effective, allowing the owner to re-enable
     * the protection back in case of being under attack.
     * The protection layer only applies to EOA wallets.
     */
    function DANGER__disableTokenGuardian() external;

    /**
     * @notice Enables back the profile protection mechanism for the msg.sender, preventing profile transfers or
     * approvals (except when revoking them).
     * The protection layer only applies to EOA wallets.
     */
    function enableTokenGuardian() external;

    /**
     * @notice Returns the timestamp at which the Token Guardian will become effectively disabled.
     *
     * @param wallet The address to check the timestamp for.
     *
     * @return uint256 The timestamp at which the Token Guardian will become effectively disabled.
     * Max 256-bit unsigned integer value if enabled.
     */
    function getTokenGuardianDisablingTimestamp(address wallet) external view returns (uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

import {ILensProtocol} from 'contracts/interfaces/ILensProtocol.sol';
import {ILensGovernable} from 'contracts/interfaces/ILensGovernable.sol';
import {ILensHubEventHooks} from 'contracts/interfaces/ILensHubEventHooks.sol';
import {ILensImplGetters} from 'contracts/interfaces/ILensImplGetters.sol';
import {ILensProfiles} from 'contracts/interfaces/ILensProfiles.sol';
import {ILensVersion} from 'contracts/interfaces/ILensVersion.sol';

interface ILensHub is
    ILensProfiles,
    ILensProtocol,
    ILensGovernable,
    ILensHubEventHooks,
    ILensImplGetters,
    ILensVersion
{}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

/**
 * @title ILensHubEventHooks
 * @author Lens Protocol
 *
 * @notice This is the interface for the LensHub contract's event hooks. As we want most of the core events to be
 * emitted by the LensHub contract, event hooks are needed for core events generated by pheripheral contracts.
 */
interface ILensHubEventHooks {
    /**
     * @dev Helper function to emit an `Unfollowed` event from the hub, to be consumed by indexers to track unfollows.
     * @custom:permissions FollowNFT of the Profile unfollowed.
     *
     * @param unfollowerProfileId The ID of the profile that executed the unfollow.
     * @param idOfProfileUnfollowed The ID of the profile that was unfollowed.
     * @param transactionExecutor The address of the account executing the unfollow operation.
     */
    function emitUnfollowedEvent(
        uint256 unfollowerProfileId,
        uint256 idOfProfileUnfollowed,
        address transactionExecutor
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

/**
 * @title ILensImplGetters
 * @author Lens Protocol
 *
 * @notice This is the interface for the LensHub contract's implementation getters. These implementations will be used
 * for deploying each respective contract for each profile.
 */
interface ILensImplGetters {
    /**
     * @notice Returns the Follow NFT implementation address that is used for all deployed Follow NFTs.
     *
     * @return address The Follow NFT implementation address.
     */
    function getFollowNFTImpl() external view returns (address);

    /**
     * @notice Returns the Collect NFT implementation address that is used for each new deployed Collect NFT.
     * @custom:pending-deprecation
     *
     * @return address The Collect NFT implementation address.
     */
    function getLegacyCollectNFTImpl() external view returns (address);

    /**
     * @notice Returns the address of the registry that stores all modules that are used by the Lens Protocol.
     *
     * @return address The address of the Module Registry contract.
     */
    function getModuleRegistry() external view returns (address);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

import {ILensERC721} from 'contracts/interfaces/ILensERC721.sol';

interface ILensProfiles is ILensERC721 {
    /**
     * @notice DANGER: Triggers disabling the profile protection mechanism for the msg.sender, which will allow
     * transfers or approvals over profiles held by it.
     * Disabling the mechanism will have a timelock before it becomes effective, allowing the owner to re-enable
     * the protection back in case of being under attack.
     * The protection layer only applies to EOA wallets.
     */
    function DANGER__disableTokenGuardian() external;

    /**
     * @notice Enables back the profile protection mechanism for the msg.sender, preventing profile transfers or
     * approvals (except when revoking them).
     * The protection layer only applies to EOA wallets.
     */
    function enableTokenGuardian() external;

    /**
     * @notice Returns the timestamp at which the Token Guardian will become effectively disabled.
     *
     * @param wallet The address to check the timestamp for.
     *
     * @return uint256 The timestamp at which the Token Guardian will become effectively disabled. Zero if enabled.
     */
    function getTokenGuardianDisablingTimestamp(address wallet) external view returns (uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

import {Types} from 'contracts/libraries/constants/Types.sol';

/**
 * @title ILensProtocol
 * @author Lens Protocol
 *
 * @notice This is the interface for Lens Protocol's core functions. It contains all the entry points for performing
 * social operations.
 */
interface ILensProtocol {
    /**
     * @notice Creates a profile with the specified parameters, minting a Profile NFT to the given recipient.
     * @custom:permissions Any whitelisted profile creator.
     *
     * @param createProfileParams A CreateProfileParams struct containing the needed params.
     */
    function createProfile(Types.CreateProfileParams calldata createProfileParams) external returns (uint256);

    /**
     * @notice Sets the metadata URI for the given profile.
     * @custom:permissions Profile Owner or Delegated Executor.
     *
     * @param profileId The token ID of the profile to set the metadata URI for.
     * @param metadataURI The metadata URI to set for the given profile.
     */
    function setProfileMetadataURI(uint256 profileId, string calldata metadataURI) external;

    /**
     * @custom:meta-tx setProfileMetadataURI.
     */
    function setProfileMetadataURIWithSig(
        uint256 profileId,
        string calldata metadataURI,
        Types.EIP712Signature calldata signature
    ) external;

    /**
     * @notice Sets the follow module for the given profile.
     * @custom:permissions Profile Owner or Delegated Executor.
     *
     * @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;

    /**
     * @custom:meta-tx setFollowModule.
     */
    function setFollowModuleWithSig(
        uint256 profileId,
        address followModule,
        bytes calldata followModuleInitData,
        Types.EIP712Signature calldata signature
    ) external;

    /**
     * @notice Changes the delegated executors configuration for the given profile. It allows setting the approvals for
     * delegated executors in the specified configuration, as well as switching to it.
     * @custom:permissions Profile Owner.
     *
     * @param delegatorProfileId The ID of the profile to which the delegated executor is being changed for.
     * @param delegatedExecutors The array of delegated executors to set the approval for.
     * @param approvals The array of booleans indicating the corresponding executor's new approval status.
     * @param configNumber The number of the configuration where the executor approval state is being set.
     * @param switchToGivenConfig A boolean indicating if the configuration must be switched to the one with the given
     * number.
     */
    function changeDelegatedExecutorsConfig(
        uint256 delegatorProfileId,
        address[] calldata delegatedExecutors,
        bool[] calldata approvals,
        uint64 configNumber,
        bool switchToGivenConfig
    ) external;

    /**
     * @notice Changes the delegated executors configuration for the given profile under the current configuration.
     * @custom:permissions Profile Owner.
     *
     * @param delegatorProfileId The ID of the profile to which the delegated executor is being changed for.
     * @param delegatedExecutors The array of delegated executors to set the approval for.
     * @param approvals The array of booleans indicating the corresponding executor's new approval status.
     */
    function changeDelegatedExecutorsConfig(
        uint256 delegatorProfileId,
        address[] calldata delegatedExecutors,
        bool[] calldata approvals
    ) external;

    /**
     * @custom:meta-tx changeDelegatedExecutorsConfig.
     */
    function changeDelegatedExecutorsConfigWithSig(
        uint256 delegatorProfileId,
        address[] calldata delegatedExecutors,
        bool[] calldata approvals,
        uint64 configNumber,
        bool switchToGivenConfig,
        Types.EIP712Signature calldata signature
    ) external;

    /**
     * @notice Publishes a post.
     * Post is the most basic publication type, and can be used to publish any kind of content.
     * Posts can have these types of modules initialized:
     *  - Action modules: any number of publication actions (e.g. collect, tip, etc.)
     *  - Reference module: a module handling the rules when referencing this post (e.g. token-gated comments)
     * @custom:permissions Profile Owner or Delegated Executor.
     *
     * @param postParams A PostParams struct containing the needed parameters.
     *
     * @return uint256 An integer representing the post's publication ID.
     */
    function post(Types.PostParams calldata postParams) external returns (uint256);

    /**
     * @custom:meta-tx post.
     */
    function postWithSig(
        Types.PostParams calldata postParams,
        Types.EIP712Signature calldata signature
    ) external returns (uint256);

    /**
     * @notice Publishes a comment on the given publication.
     * Comment is a type of reference publication that points to another publication.
     * Comments can have these types of modules initialized:
     *  - Action modules: any number of publication actions (e.g. collect, tip, etc.)
     *  - Reference module: a module handling the rules when referencing this comment (e.g. token-gated mirrors)
     * Comments can have referrers (e.g. publications or profiles that helped to discover the pointed publication).
     * @custom:permissions Profile Owner or Delegated Executor.
     *
     * @param commentParams A CommentParams struct containing the needed parameters.
     *
     * @return uint256 An integer representing the comment's publication ID.
     */
    function comment(Types.CommentParams calldata commentParams) external returns (uint256);

    /**
     * @custom:meta-tx comment.
     */
    function commentWithSig(
        Types.CommentParams calldata commentParams,
        Types.EIP712Signature calldata signature
    ) external returns (uint256);

    /**
     * @notice Publishes a mirror of the given publication.
     * Mirror is a type of reference publication that points to another publication but doesn't have content.
     * Mirrors don't have any modules initialized.
     * Mirrors can have referrers (e.g. publications or profiles that allowed to discover the pointed publication).
     * You cannot mirror a mirror, comment on a mirror, or quote a mirror.
     * @custom:permissions Profile Owner or Delegated Executor.
     *
     * @param mirrorParams A MirrorParams struct containing the necessary parameters.
     *
     * @return uint256 An integer representing the mirror's publication ID.
     */
    function mirror(Types.MirrorParams calldata mirrorParams) external returns (uint256);

    /**
     * @custom:meta-tx mirror.
     */
    function mirrorWithSig(
        Types.MirrorParams calldata mirrorParams,
        Types.EIP712Signature calldata signature
    ) external returns (uint256);

    /**
     * @notice Publishes a quote of the given publication.
     * Quote is a type of reference publication similar to mirror, but it has content and modules.
     * Quotes can have these types of modules initialized:
     *  - Action modules: any number of publication actions (e.g. collect, tip, etc.)
     *  - Reference module: a module handling the rules when referencing this quote (e.g. token-gated comments on quote)
     * Quotes can have referrers (e.g. publications or profiles that allowed to discover the pointed publication).
     * Unlike mirrors, you can mirror a quote, comment on a quote, or quote a quote.
     * @custom:permissions Profile Owner or Delegated Executor.
     *
     * @param quoteParams A QuoteParams struct containing the needed parameters.
     *
     * @return uint256 An integer representing the quote's publication ID.
     */
    function quote(Types.QuoteParams calldata quoteParams) external returns (uint256);

    /**
     * @custom:meta-tx quote.
     */
    function quoteWithSig(
        Types.QuoteParams calldata quoteParams,
        Types.EIP712Signature calldata signature
    ) external returns (uint256);

    /**
     * @notice Follows given profiles, executing each profile's follow module logic (if any).
     * @custom:permissions Profile Owner or Delegated Executor.
     *
     * @dev Both the `idsOfProfilesToFollow`, `followTokenIds`, and `datas` arrays must be of the same length,
     * regardless if the profiles do not have a follow module set.
     *
     * @param followerProfileId The ID of the profile the follows are being executed for.
     * @param idsOfProfilesToFollow The array of IDs of profiles to follow.
     * @param followTokenIds The array of follow token IDs to use for each follow (0 if you don't own a follow token).
     * @param datas The arbitrary data array to pass to the follow module for each profile if needed.
     *
     * @return uint256[] An array of follow token IDs representing the follow tokens created for each follow.
     */
    function follow(
        uint256 followerProfileId,
        uint256[] calldata idsOfProfilesToFollow,
        uint256[] calldata followTokenIds,
        bytes[] calldata datas
    ) external returns (uint256[] memory);

    /**
     * @custom:meta-tx follow.
     */
    function followWithSig(
        uint256 followerProfileId,
        uint256[] calldata idsOfProfilesToFollow,
        uint256[] calldata followTokenIds,
        bytes[] calldata datas,
        Types.EIP712Signature calldata signature
    ) external returns (uint256[] memory);

    /**
     * @notice Unfollows given profiles.
     * @custom:permissions Profile Owner or Delegated Executor.
     *
     * @param unfollowerProfileId The ID of the profile the unfollows are being executed for.
     * @param idsOfProfilesToUnfollow The array of IDs of profiles to unfollow.
     */
    function unfollow(uint256 unfollowerProfileId, uint256[] calldata idsOfProfilesToUnfollow) external;

    /**
     * @custom:meta-tx unfollow.
     */
    function unfollowWithSig(
        uint256 unfollowerProfileId,
        uint256[] calldata idsOfProfilesToUnfollow,
        Types.EIP712Signature calldata signature
    ) external;

    /**
     * @notice Sets the block status for the given profiles. Changing a profile's block status to `true` (i.e. blocked),
     * when will also force them to unfollow.
     * Blocked profiles cannot perform any actions with the profile that blocked them: they cannot comment or mirror
     * their publications, they cannot follow them, they cannot collect, tip them, etc.
     * @custom:permissions Profile Owner or Delegated Executor.
     *
     * @dev Both the `idsOfProfilesToSetBlockStatus` and `blockStatus` arrays must be of the same length.
     *
     * @param byProfileId The ID of the profile that is blocking/unblocking somebody.
     * @param idsOfProfilesToSetBlockStatus The array of IDs of profiles to set block status.
     * @param blockStatus The array of block statuses to use for each (true is blocked).
     */
    function setBlockStatus(
        uint256 byProfileId,
        uint256[] calldata idsOfProfilesToSetBlockStatus,
        bool[] calldata blockStatus
    ) external;

    /**
     * @custom:meta-tx setBlockStatus.
     */
    function setBlockStatusWithSig(
        uint256 byProfileId,
        uint256[] calldata idsOfProfilesToSetBlockStatus,
        bool[] calldata blockStatus,
        Types.EIP712Signature calldata signature
    ) external;

    /**
     * @notice Collects a given publication via signature with the specified parameters.
     * Collect can have referrers (e.g. publications or profiles that allowed to discover the pointed publication).
     * @custom:permissions Collector Profile Owner or its Delegated Executor.
     * @custom:pending-deprecation Collect modules were replaced by PublicationAction Collect modules in V2. This method
     * is left here for backwards compatibility with posts made in V1 that had Collect modules.
     *
     * @param collectParams A CollectParams struct containing the parameters.
     *
     * @return uint256 An integer representing the minted token ID.
     */
    function collectLegacy(Types.LegacyCollectParams calldata collectParams) external returns (uint256);

    /**
     * @custom:meta-tx collect.
     * @custom:pending-deprecation
     */
    function collectLegacyWithSig(
        Types.LegacyCollectParams calldata collectParams,
        Types.EIP712Signature calldata signature
    ) external returns (uint256);

    /**
     * @notice Acts on a given publication with the specified parameters.
     * You can act on a publication except a mirror (if it has at least one action module initialized).
     * Actions can have referrers (e.g. publications or profiles that allowed to discover the pointed publication).
     * @custom:permissions Actor Profile Owner or its Delegated Executor.
     *
     * @param publicationActionParams A PublicationActionParams struct containing the parameters.
     *
     * @return bytes Arbitrary data the action module returns.
     */
    function act(Types.PublicationActionParams calldata publicationActionParams) external returns (bytes memory);

    /**
     * @custom:meta-tx act.
     */
    function actWithSig(
        Types.PublicationActionParams calldata publicationActionParams,
        Types.EIP712Signature calldata signature
    ) external returns (bytes memory);

    /**
     * @dev This function is used to invalidate signatures by incrementing the nonce of the signer.
     * @param increment The amount to increment the nonce by (max 255).
     */
    function incrementNonce(uint8 increment) external;

    /////////////////////////////////
    ///       VIEW FUNCTIONS      ///
    /////////////////////////////////

    /**
     * @notice Returns whether or not `followerProfileId` is following `followedProfileId`.
     *
     * @param followerProfileId The ID of the profile whose following state should be queried.
     * @param followedProfileId The ID of the profile whose followed state should be queried.
     *
     * @return bool True if `followerProfileId` is following `followedProfileId`, false otherwise.
     */
    function isFollowing(uint256 followerProfileId, uint256 followedProfileId) external view returns (bool);

    /**
     * @notice Returns whether the given address is approved as delegated executor, in the configuration with the given
     * number, to act on behalf of the given profile.
     *
     * @param delegatorProfileId The ID of the profile to check the delegated executor approval for.
     * @param delegatedExecutor The address to query the delegated executor approval for.
     * @param configNumber The number of the configuration where the executor approval state is being queried.
     *
     * @return bool True if the address is approved as a delegated executor to act on behalf of the profile in the
     * given configuration, false otherwise.
     */
    function isDelegatedExecutorApproved(
        uint256 delegatorProfileId,
        address delegatedExecutor,
        uint64 configNumber
    ) external view returns (bool);

    /**
     * @notice Returns whether the given address is approved as delegated executor, in the current configuration, to act
     * on behalf of the given profile.
     *
     * @param delegatorProfileId The ID of the profile to check the delegated executor approval for.
     * @param delegatedExecutor The address to query the delegated executor approval for.
     *
     * @return bool True if the address is approved as a delegated executor to act on behalf of the profile in the
     * current configuration, false otherwise.
     */
    function isDelegatedExecutorApproved(
        uint256 delegatorProfileId,
        address delegatedExecutor
    ) external view returns (bool);

    /**
     * @notice Returns the current delegated executor config number for the given profile.
     *
     * @param delegatorProfileId The ID of the profile from which the delegated executors config number is being queried
     *
     * @return uint256 The current delegated executor configuration number.
     */
    function getDelegatedExecutorsConfigNumber(uint256 delegatorProfileId) external view returns (uint64);

    /**
     * @notice Returns the previous used delegated executor config number for the given profile.
     *
     * @param delegatorProfileId The ID of the profile from which the delegated executors' previous configuration number
     * set is being queried.
     *
     * @return uint256 The delegated executor configuration number previously set. It will coincide with the current
     * configuration set if it was never switched from the default one.
     */
    function getDelegatedExecutorsPrevConfigNumber(uint256 delegatorProfileId) external view returns (uint64);

    /**
     * @notice Returns the maximum delegated executor config number for the given profile.
     * This is the maximum config number that was ever used by this profile.
     * When creating a new clean configuration, you can only use a number that is maxConfigNumber + 1.
     *
     * @param delegatorProfileId The ID of the profile from which the delegated executors' maximum configuration number
     * set is being queried.
     *
     * @return uint256 The delegated executor maximum configuration number set.
     */
    function getDelegatedExecutorsMaxConfigNumberSet(uint256 delegatorProfileId) external view returns (uint64);

    /**
     * @notice Returns whether `profileId` is blocked by `byProfileId`.
     * See setBlockStatus() for more information on how blocking works on the platform.
     *
     * @param profileId The ID of the profile whose blocked status should be queried.
     * @param byProfileId The ID of the profile whose blocker status should be queried.
     *
     * @return bool True if `profileId` is blocked by `byProfileId`, false otherwise.
     */
    function isBlocked(uint256 profileId, uint256 byProfileId) external view returns (bool);

    /**
     * @notice Returns the URI associated with a given publication.
     * This is used to store the publication's metadata, e.g.: content, images, etc.
     *
     * @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 full profile struct associated with a given profile token ID.
     *
     * @param profileId The token ID of the profile to query.
     *
     * @return Profile The profile struct of the given profile.
     */
    function getProfile(uint256 profileId) external view returns (Types.Profile 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 Publication The publication struct associated with the queried publication.
     */
    function getPublication(uint256 profileId, uint256 pubId) external view returns (Types.PublicationMemory memory);

    /**
     * @notice Returns the type of a given publication.
     * The type can be one of the following (see PublicationType enum):
     * - Nonexistent
     * - Post
     * - Comment
     * - Mirror
     * - Quote
     *
     * @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 PublicationType The publication type of the queried publication.
     */
    function getPublicationType(uint256 profileId, uint256 pubId) external view returns (Types.PublicationType);

    /**
     * @notice Returns wether a given Action Module is enabled 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.
     * @param module The address of the Action Module to query.
     *
     * @return bool True if the Action Module is enabled for the queried publication, false if not.
     */
    function isActionModuleEnabledInPublication(
        uint256 profileId,
        uint256 pubId,
        address module
    ) external view returns (bool);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

/**
 * @title ILensVersion
 * @author Lens Protocol
 *
 * @notice This is the interface for the LensHub Version getters and emitter.
 * It allows to emit a LensHub version during an upgrade, and also to get the current version.
 */
interface ILensVersion {
    /**
     * @notice Returns the LensHub current Version.
     *
     * @return version The LensHub current Version.
     */
    function getVersion() external view returns (string memory);

    /**
     * @notice Returns the LensHub current Git Commit.
     *
     * @return gitCommit The LensHub current Git Commit.
     */
    function getGitCommit() external view returns (bytes20);

    /**
     * @notice Emits the LensHub current Version. Used in upgradeAndCall().
     */
    function emitVersion() external;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

library Errors {
    error CannotInitImplementation();
    error Initialized();
    error SignatureExpired();
    error SignatureInvalid();
    error InvalidOwner();
    error NotOwnerOrApproved();
    error NotHub();
    error TokenDoesNotExist();
    error NotGovernance();
    error NotGovernanceOrEmergencyAdmin();
    error EmergencyAdminCanOnlyPauseFurther();
    error NotProfileOwner();
    error PublicationDoesNotExist();
    error CallerNotFollowNFT();
    error CallerNotCollectNFT(); // Legacy
    error ArrayMismatch();
    error NotWhitelisted();
    error NotRegistered();
    error InvalidParameter();
    error ExecutorInvalid();
    error Blocked();
    error SelfBlock();
    error NotFollowing();
    error SelfFollow();
    error InvalidReferrer();
    error InvalidPointedPub();
    error NonERC721ReceiverImplementer();
    error AlreadyEnabled();

    // Module Errors
    error InitParamsInvalid();
    error ActionNotAllowed();

    error CollectNotAllowed(); // Used in LegacyCollectLib (pending deprecation)

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

    // Profile Guardian Errors
    error GuardianEnabled();
    error NotEOA();
    error DisablingAlreadyTriggered();

    // Migration Errors
    error NotMigrationAdmin();
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

/**
 * @title Types
 * @author Lens Protocol
 *
 * @notice A standard library of data types used throughout the Lens Protocol.
 */
library Types {
    /**
     * @notice ERC721Timestamped storage. 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 mint timestamp.
     *
     * @param owner The token owner.
     * @param mintTimestamp The mint timestamp.
     */
    struct TokenData {
        address owner;
        uint96 mintTimestamp;
    }

    /**
     * @notice A struct containing token follow-related data.
     *
     * @param followerProfileId The ID of the profile using the token to follow.
     * @param originalFollowTimestamp The timestamp of the first follow performed with the token.
     * @param followTimestamp The timestamp of the current follow, if a profile is using the token to follow.
     * @param profileIdAllowedToRecover The ID of the profile allowed to recover the follow ID, if any.
     */
    struct FollowData {
        uint160 followerProfileId;
        uint48 originalFollowTimestamp;
        uint48 followTimestamp;
        uint256 profileIdAllowedToRecover;
    }

    /**
     * @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 Nonexistent An indicator showing the queried publication does not exist.
     * @param Post A standard post, having an URI, action modules and no pointer to another publication.
     * @param Comment A comment, having an URI, action modules and a pointer to another publication.
     * @param Mirror A mirror, having a pointer to another publication, but no URI or action modules.
     * @param Quote A quote, having an URI, action modules, and a pointer to another publication.
     */
    enum PublicationType {
        Nonexistent,
        Post,
        Comment,
        Mirror,
        Quote
    }

    /**
     * @notice A struct containing the necessary information to reconstruct an EIP-712 typed data signature.
     *
     * @param signer The address of the signer. Specially needed as a parameter to support EIP-1271.
     * @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 {
        address signer;
        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 address(0) in none.
     * @param followNFT The address of the followNFT associated with this profile. It can be address(0) if the
     * profile has not been followed yet, as the collection is lazy-deployed upon the first follow.
     * @param __DEPRECATED__handle DEPRECATED in V2: handle slot, was replaced with LensHandles.
     * @param __DEPRECATED__imageURI DEPRECATED in V2: The URI to be used for the profile image.
     * @param __DEPRECATED__followNFTURI DEPRECATED in V2: The URI used for the follow NFT image.
     * @param metadataURI MetadataURI is used to store the profile's metadata, for example: displayed name, description,
     * interests, etc.
     */
    struct Profile {
        uint256 pubCount; // offset 0
        address followModule; // offset 1
        address followNFT; // offset 2
        string __DEPRECATED__handle; // offset 3
        string __DEPRECATED__imageURI; // offset 4
        string __DEPRECATED__followNFTURI; // Deprecated in V2 as we have a common tokenURI for all Follows, offset 5
        string metadataURI; // offset 6
    }

    /**
     * @notice A struct containing publication data.
     *
     * @param pointedProfileId The profile token ID to point the publication to.
     * @param pointedPubId The publication ID to point the publication to.
     * These are used to implement the "reference" feature of the platform and is used in:
     * - Mirrors
     * - Comments
     * - Quotes
     * There are (0,0) if the publication is not pointing to any other publication (i.e. the publication is a Post).
     * @param contentURI The URI to set for the content of publication (can be ipfs, arweave, http, etc).
     * @param referenceModule Reference module associated with this profile, if any.
     * @param __DEPRECATED__collectModule Collect module associated with this publication, if any. Deprecated in V2.
     * @param __DEPRECATED__collectNFT Collect NFT associated with this publication, if any. Deprecated in V2.
     * @param pubType The type of publication, can be Nonexistent, Post, Comment, Mirror or Quote.
     * @param rootProfileId The profile ID of the root post (to determine if comments/quotes and mirrors come from it).
     * Posts, V1 publications and publications rooted in V1 publications don't have it set.
     * @param rootPubId The publication ID of the root post (to determine if comments/quotes and mirrors come from it).
     * Posts, V1 publications and publications rooted in V1 publications don't have it set.
     * @param actionModuleEnabled The action modules enabled in a given publication.
     */
    struct Publication {
        uint256 pointedProfileId;
        uint256 pointedPubId;
        string contentURI;
        address referenceModule;
        address __DEPRECATED__collectModule; // Deprecated in V2
        address __DEPRECATED__collectNFT; // Deprecated in V2
        // Added in Lens V2, so these will be zero for old publications:
        PublicationType pubType;
        uint256 rootProfileId;
        uint256 rootPubId;
        mapping(address => bool) actionModuleEnabled;
    }

    struct PublicationMemory {
        uint256 pointedProfileId;
        uint256 pointedPubId;
        string contentURI;
        address referenceModule;
        address __DEPRECATED__collectModule; // Deprecated in V2
        address __DEPRECATED__collectNFT; // Deprecated in V2
        // Added in Lens V2, so these will be zero for old publications:
        PublicationType pubType;
        uint256 rootProfileId;
        uint256 rootPubId;
        // bytes32 __ACTION_MODULE_ENABLED_MAPPING; // Mappings are not supported in memory.
    }

    /**
     * @notice A struct containing the parameters required for the `createProfile()` function.
     *
     * @param to The address receiving the profile.
     * @param followModule The follow module to use, can be the zero address.
     * @param followModuleInitData The follow module initialization data, if any.
     */
    struct CreateProfileParams {
        address to;
        address followModule;
        bytes followModuleInitData;
    }

    /**
     * @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 actionModules The action modules to set for this new publication.
     * @param actionModulesInitDatas The data to pass to the action modules' 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 PostParams {
        uint256 profileId;
        string contentURI;
        address[] actionModules;
        bytes[] actionModulesInitDatas;
        address referenceModule;
        bytes referenceModuleInitData;
    }

    /**
     * @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 pointedProfileId The profile token ID to point the comment to.
     * @param pointedPubId The publication ID to point the comment to.
     * @param referrerProfileId The profile token ID of the publication that referred to the publication being commented on/quoted.
     * @param referrerPubId The ID of the publication that referred to the publication being commented on/quoted.
     * @param referenceModuleData The data passed to the reference module.
     * @param actionModules The action modules to set for this new publication.
     * @param actionModulesInitDatas The data to pass to the action modules' 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 CommentParams {
        uint256 profileId;
        string contentURI;
        uint256 pointedProfileId;
        uint256 pointedPubId;
        uint256[] referrerProfileIds;
        uint256[] referrerPubIds;
        bytes referenceModuleData;
        address[] actionModules;
        bytes[] actionModulesInitDatas;
        address referenceModule;
        bytes referenceModuleInitData;
    }

    /**
     * @notice A struct containing the parameters required for the `quote()` function.
     *
     * @param profileId The token ID of the profile to publish to.
     * @param contentURI The URI to set for this new publication.
     * @param pointedProfileId The profile token ID of the publication author that is quoted.
     * @param pointedPubId The publication ID that is quoted.
     * @param referrerProfileId The profile token ID of the publication that referred to the publication being commented on/quoted.
     * @param referrerPubId The ID of the publication that referred to the publication being commented on/quoted.
     * @param referenceModuleData The data passed to the reference module.
     * @param actionModules The action modules to set for this new publication.
     * @param actionModulesInitDatas The data to pass to the action modules' 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 QuoteParams {
        uint256 profileId;
        string contentURI;
        uint256 pointedProfileId;
        uint256 pointedPubId;
        uint256[] referrerProfileIds;
        uint256[] referrerPubIds;
        bytes referenceModuleData;
        address[] actionModules;
        bytes[] actionModulesInitDatas;
        address referenceModule;
        bytes referenceModuleInitData;
    }

    /**
     * @notice A struct containing the parameters required for the `comment()` or `quote()` internal functions.
     *
     * @param profileId The token ID of the profile to publish to.
     * @param contentURI The URI to set for this new publication.
     * @param pointedProfileId The profile token ID of the publication author that is commented on/quoted.
     * @param pointedPubId The publication ID that is commented on/quoted.
     * @param referrerProfileId The profile token ID of the publication that referred to the publication being commented on/quoted.
     * @param referrerPubId The ID of the publication that referred to the publication being commented on/quoted.
     * @param referenceModuleData The data passed to the reference module.
     * @param actionModules The action modules to set for this new publication.
     * @param actionModulesInitDatas The data to pass to the action modules' 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 ReferencePubParams {
        uint256 profileId;
        string contentURI;
        uint256 pointedProfileId;
        uint256 pointedPubId;
        uint256[] referrerProfileIds;
        uint256[] referrerPubIds;
        bytes referenceModuleData;
        address[] actionModules;
        bytes[] actionModulesInitDatas;
        address referenceModule;
        bytes referenceModuleInitData;
    }

    /**
     * @notice A struct containing the parameters required for the `mirror()` function.
     *
     * @param profileId The token ID of the profile to publish to.
     * @param metadataURI the URI containing metadata attributes to attach to this mirror publication.
     * @param pointedProfileId The profile token ID to point the mirror to.
     * @param pointedPubId The publication ID to point the mirror to.
     * @param referenceModuleData The data passed to the reference module.
     */
    struct MirrorParams {
        uint256 profileId;
        string metadataURI;
        uint256 pointedProfileId;
        uint256 pointedPubId;
        uint256[] referrerProfileIds;
        uint256[] referrerPubIds;
        bytes referenceModuleData;
    }

    /**
     * Deprecated in V2: Will be removed after some time after upgrading to V2.
     * @notice A struct containing the parameters required for the legacy `collect()` function.
     * @dev The referrer can only be a mirror of the publication being collected.
     *
     * @param publicationCollectedProfileId The token ID of the profile that published the publication to collect.
     * @param publicationCollectedId The publication to collect's publication ID.
     * @param collectorProfileId The collector profile.
     * @param referrerProfileId The ID of a profile that authored a mirror that helped discovering the collected pub.
     * @param referrerPubId The ID of the mirror that helped discovering the collected pub.
     * @param collectModuleData The arbitrary data to pass to the collectModule if needed.
     */
    struct LegacyCollectParams {
        uint256 publicationCollectedProfileId;
        uint256 publicationCollectedId;
        uint256 collectorProfileId;
        uint256 referrerProfileId;
        uint256 referrerPubId;
        bytes collectModuleData;
    }

    /**
     * @notice A struct containing the parameters required for the `action()` function.
     *
     * @param publicationActedProfileId The token ID of the profile that published the publication to action.
     * @param publicationActedId The publication to action's publication ID.
     * @param actorProfileId The actor profile.
     * @param referrerProfileId
     * @param referrerPubId
     * @param actionModuleAddress
     * @param actionModuleData The arbitrary data to pass to the actionModule if needed.
     */
    struct PublicationActionParams {
        uint256 publicationActedProfileId;
        uint256 publicationActedId;
        uint256 actorProfileId;
        uint256[] referrerProfileIds;
        uint256[] referrerPubIds;
        address actionModuleAddress;
        bytes actionModuleData;
    }

    struct ProcessActionParams {
        uint256 publicationActedProfileId;
        uint256 publicationActedId;
        uint256 actorProfileId;
        address actorProfileOwner;
        address transactionExecutor;
        uint256[] referrerProfileIds;
        uint256[] referrerPubIds;
        Types.PublicationType[] referrerPubTypes;
        bytes actionModuleData;
    }

    struct ProcessCommentParams {
        uint256 profileId;
        uint256 pubId;
        address transactionExecutor;
        uint256 pointedProfileId;
        uint256 pointedPubId;
        uint256[] referrerProfileIds;
        uint256[] referrerPubIds;
        Types.PublicationType[] referrerPubTypes;
        bytes data;
    }

    struct ProcessQuoteParams {
        uint256 profileId;
        uint256 pubId;
        address transactionExecutor;
        uint256 pointedProfileId;
        uint256 pointedPubId;
        uint256[] referrerProfileIds;
        uint256[] referrerPubIds;
        Types.PublicationType[] referrerPubTypes;
        bytes data;
    }

    struct ProcessMirrorParams {
        uint256 profileId;
        uint256 pubId;
        address transactionExecutor;
        uint256 pointedProfileId;
        uint256 pointedPubId;
        uint256[] referrerProfileIds;
        uint256[] referrerPubIds;
        Types.PublicationType[] referrerPubTypes;
        bytes data;
    }

    /**
     * @notice A struct containing a profile's delegated executors configuration.
     *
     * @param isApproved Tells when an address is approved as delegated executor in the given configuration number.
     * @param configNumber Current configuration number in use.
     * @param prevConfigNumber Previous configuration number set, before switching to the current one.
     * @param maxConfigNumberSet Maximum configuration number ever used.
     */
    struct DelegatedExecutorsConfig {
        mapping(uint256 => mapping(address => bool)) isApproved; // isApproved[configNumber][delegatedExecutor]
        uint64 configNumber;
        uint64 prevConfigNumber;
        uint64 maxConfigNumberSet;
    }

    struct TreasuryData {
        address treasury;
        uint16 treasuryFeeBPS;
    }

    struct MigrationParams {
        address lensHandlesAddress;
        address tokenHandleRegistryAddress;
        address legacyFeeFollowModule;
        address legacyProfileFollowModule;
        address newFeeFollowModule;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.15;

contract ImmutableOwnable {
    address public immutable OWNER;
    address public immutable LENS_HUB;

    error OnlyOwner();
    error OnlyOwnerOrHub();

    modifier onlyOwner() {
        if (msg.sender != OWNER) {
            revert OnlyOwner();
        }
        _;
    }

    modifier onlyOwnerOrHub() {
        if (msg.sender != OWNER && msg.sender != LENS_HUB) {
            revert OnlyOwnerOrHub();
        }
        _;
    }

    constructor(address owner, address lensHub) {
        OWNER = owner;
        LENS_HUB = lensHub;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

library RegistryErrors {
    error NotHandleNorTokenOwner();
    error OnlyLensHub();
    error NotLinked();
    error DoesNotExist();
    error DoesNotHavePermissions();
    error HandleAndTokenNotInSameWallet();
    error SignatureInvalid();
}

library HandlesErrors {
    error HandleLengthInvalid();
    error HandleContainsInvalidCharacters();
    error HandleFirstCharInvalid();
    error NotOwnerNorWhitelisted();
    error NotOwner();
    error NotHub();
    error DoesNotExist();
    error NotEOA();
    error DisablingAlreadyTriggered();
    error GuardianEnabled();
    error AlreadyEnabled();
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

import {RegistryTypes} from 'contracts/namespaces/constants/Types.sol';

library HandlesEvents {
    event HandleMinted(string handle, string namespace, uint256 handleId, address to, uint256 timestamp);

    /**
     * @dev Emitted when an address' Token Guardian state change is triggered.
     *
     * @param wallet The address whose Token Guardian state change is being triggered.
     * @param enabled True if the Token Guardian is being enabled, false if it is being disabled.
     * @param tokenGuardianDisablingTimestamp The UNIX timestamp when disabling the Token Guardian will take effect,
     * if disabling it. Zero if the protection is being enabled.
     * @param timestamp The UNIX timestamp of the change being triggered.
     */
    event TokenGuardianStateChanged(
        address indexed wallet,
        bool indexed enabled,
        uint256 tokenGuardianDisablingTimestamp,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a collection's token URI is updated.
     * @param fromTokenId The ID of the smallest token that requires its token URI to be refreshed.
     * @param toTokenId The ID of the biggest token that requires its token URI to be refreshed. Max uint256 to refresh
     * all of them.
     */
    event BatchMetadataUpdate(uint256 fromTokenId, uint256 toTokenId);
}

library RegistryEvents {
    event HandleLinked(
        RegistryTypes.Handle handle,
        RegistryTypes.Token token,
        address transactionExecutor,
        uint256 timestamp
    );

    /**
     * WARNING: If a linked handle or token is burnt, this event will not be emitted.
     * Indexers should also take into account token burns through ERC-721 Transfer events to track all unlink actions.
     * The `resolveHandle` and `resolveToken` functions will properly reflect the unlink in any case.
     */
    event HandleUnlinked(
        RegistryTypes.Handle handle,
        RegistryTypes.Token token,
        address transactionExecutor,
        uint256 timestamp
    );

    /**
     * @dev Emitted when a signer's nonce is used and, as a consequence, the next available nonce is updated.
     *
     * @param signer The signer whose next available nonce was updated.
     * @param nonce The next available nonce that can be used to execute a meta-tx successfully.
     * @param timestamp The UNIX timestamp of the nonce being used.
     */
    event NonceUpdated(address indexed signer, uint256 nonce, uint256 timestamp);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

/**
 * @title Namespaces Types
 * @author Lens Protocol
 */
library RegistryTypes {
    struct Token {
        uint256 id; // SLOT 0
        address collection; // SLOT 1 - end
        // uint96 _gap; // SLOT 1 - start
    }

    struct Handle {
        uint256 id; // SLOT 0
        address collection; // SLOT 1 - end
        // uint96 _gap; // SLOT 1 - start
    }
}

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

pragma solidity ^0.8.0;

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

/**
 * @dev Interface for the NFT Royalty Standard.
 *
 * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
 * support for royalty payments across all NFT marketplaces and ecosystem participants.
 *
 * _Available since v4.5._
 */
interface IERC2981 is IERC165 {
    /**
     * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
     * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.
     */
    function royaltyInfo(uint256 tokenId, uint256 salePrice)
        external
        view
        returns (address receiver, uint256 royaltyAmount);
}

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

pragma solidity ^0.8.0;

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

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

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

        _approve(to, tokenId);
    }

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

        return _tokenApprovals[tokenId];
    }

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

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

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

        _transfer(from, to, tokenId);
    }

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

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

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

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

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

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

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

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

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

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

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

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

        _owners[tokenId] = to;

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

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

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

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

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

        // Clear approvals
        delete _tokenApprovals[tokenId];

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

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

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

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

        _beforeTokenTransfer(from, to, tokenId, 1);

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

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

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

        emit Transfer(from, to, tokenId);

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

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

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

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

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

    /**
     * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`.
     * - When `from` is zero, the tokens will be minted for `to`.
     * - When `to` is zero, ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256, /* firstTokenId */
        uint256 batchSize
    ) internal virtual {
        if (batchSize > 1) {
            if (from != address(0)) {
                _balances[from] -= batchSize;
            }
            if (to != address(0)) {
                _balances[to] += batchSize;
            }
        }
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

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

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

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

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

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

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts 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 v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// 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 (last updated v4.8.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";

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

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

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

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

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

// 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 v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

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

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1);

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0);
        }
    }
}

{
  "remappings": [
    "@ensdomains/=node_modules/@ensdomains/",
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "@seadrop/=lib/seadrop/src/",
    "ERC721A-Upgradeable/=lib/seadrop/lib/ERC721A-Upgradeable/contracts/",
    "ERC721A/=lib/seadrop/lib/ERC721A/contracts/",
    "create2-helpers/=lib/seadrop/lib/create2-helpers/",
    "create2-scripts/=lib/seadrop/lib/create2-helpers/script/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/seadrop/lib/operator-filter-registry/lib/openzeppelin-contracts/lib/erc4626-tests/",
    "eth-gas-reporter/=node_modules/eth-gas-reporter/",
    "forge-std/=lib/forge-std/src/",
    "hardhat/=node_modules/hardhat/",
    "murky/=lib/seadrop/lib/murky/src/",
    "openzeppelin-contracts-upgradeable/=lib/seadrop/lib/openzeppelin-contracts-upgradeable/contracts/",
    "openzeppelin-contracts/=lib/seadrop/lib/openzeppelin-contracts/contracts/",
    "operator-filter-registry/=lib/seadrop/lib/operator-filter-registry/src/",
    "seadrop/=lib/seadrop/",
    "solady/=lib/solady/src/",
    "solmate/=lib/seadrop/lib/solmate/src/",
    "utility-contracts/=lib/seadrop/lib/utility-contracts/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 10
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": true,
  "libraries": {
    "contracts/libraries/ActionLib.sol": {
      "ActionLib": "0x7990dac84e3241fe314b980bba1466ac08715c4f"
    },
    "contracts/libraries/FollowLib.sol": {
      "FollowLib": "0xe280cb21fb36b6b2d584428b809a6b822a5c2260"
    },
    "contracts/libraries/GovernanceLib.sol": {
      "GovernanceLib": "0x8a83227dbf5c80b1f693de63babe168c59fefd6b"
    },
    "contracts/libraries/LegacyCollectLib.sol": {
      "LegacyCollectLib": "0x189f3fecc93d4b563d4061a3ffa5fffd0d0f53a0"
    },
    "contracts/libraries/MetaTxLib.sol": {
      "MetaTxLib": "0xf191c489e4ba0f448ea08a5fd27e9c928643f5c7"
    },
    "contracts/libraries/MigrationLib.sol": {
      "MigrationLib": "0x0deced9ac3833b687d69d4eac6655f0f1279acee"
    },
    "contracts/libraries/ProfileLib.sol": {
      "ProfileLib": "0x3fce2475a92c185f9634f5638f6b33306d77bb10"
    },
    "contracts/libraries/PublicationLib.sol": {
      "PublicationLib": "0x90654f24a2c164a4da8f763ac8bc032d3d083a1b"
    },
    "contracts/libraries/ValidationLib.sol": {
      "ValidationLib": "0x9cafd24d2851d9eb56e5a8fd394ab2ac0ef99849"
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

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000000000000000000000000f94b90bbeee30996019babd12cecddccf68331de000000000000000000000000db46d1dc155634fbc732f92e853b10b288ad5a1d0000000000000000000000000000000000000000000000000000000000015180

-----Decoded View---------------
Arg [0] : owner (address): 0xf94b90BbEee30996019bABD12cEcdDCcf68331DE
Arg [1] : lensHub (address): 0xDb46d1Dc155634FbC732f92E853b10B288AD5a1d
Arg [2] : tokenGuardianCooldown (uint256): 86400

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000f94b90bbeee30996019babd12cecddccf68331de
Arg [1] : 000000000000000000000000db46d1dc155634fbc732f92e853b10b288ad5a1d
Arg [2] : 0000000000000000000000000000000000000000000000000000000000015180