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// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

import "./D4AProtocol.sol";
import "@openzeppelin/contracts-upgradeable/utils/cryptography/EIP712Upgradeable.sol";

contract D4AProtocolWithPermission is D4AProtocol, EIP712Upgradeable {
    bytes32 internal constant MINTNFT_TYPEHASH =
        keccak256("MintNFT(bytes32 canvasID,bytes32 tokenURIHash,uint256 flatPrice)");

    mapping(bytes32 => NftMintTracker) public nftMintTrackers;

    function createCanvas(bytes32 daoId, string calldata canvasUri, bytes32[] calldata proof)
        external
        payable
        nonReentrant
        returns (bytes32)
    {
        if (settings.permission_control().isCanvasCreatorBlacklisted(daoId, msg.sender)) revert Blacklisted();
        if (!settings.permission_control().inCanvasCreatorWhitelist(daoId, msg.sender, proof)) {
            revert NotInWhitelist();
        }
        return _createCanvas(daoId, canvasUri);
    }

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    function initialize(address _settings) public initializer {
        __ReentrancyGuard_init();
        settings = ID4ASetting(_settings);
        project_num = settings.reserved_slots();
        __EIP712_init("D4AProtocolWithPermission", "1");
    }

    error ExceedMaxMintAmount();

    modifier ableToMint(bytes32 daoId, bytes32[] calldata proof, uint256 amount) {
        _checkMintEligibility(daoId, msg.sender, proof, amount);
        _;
    }

    function _checkMintEligibility(bytes32 daoId, address account, bytes32[] calldata proof, uint256 amount)
        internal
        view
    {
        if (!_ableToMint(daoId, account, proof, amount)) revert ExceedMaxMintAmount();
    }

    function mintNFT(
        bytes32 daoId,
        bytes32 _canvas_id,
        string calldata _token_uri,
        bytes32[] calldata proof,
        uint256 _flat_price,
        bytes calldata _signature
    ) external payable nonReentrant returns (uint256) {
        {
            _checkMintEligibility(daoId, msg.sender, proof, 1);
        }
        _verifySignature(_canvas_id, _token_uri, _flat_price, _signature);
        nftMintTrackers[daoId].mintInfos[msg.sender].minted += 1;
        return _mintNft(_canvas_id, _token_uri, _flat_price);
    }

    function batchMint(
        bytes32 daoId,
        bytes32 canvasId,
        bytes32[] calldata proof,
        MintNftInfo[] calldata mintNftInfos,
        bytes[] calldata signatures
    ) external payable nonReentrant returns (uint256[] memory) {
        uint32 length = uint32(mintNftInfos.length);
        {
            _checkMintEligibility(daoId, msg.sender, proof, length);
            for (uint32 i = 0; i < length;) {
                _verifySignature(canvasId, mintNftInfos[i].tokenUri, mintNftInfos[i].flatPrice, signatures[i]);
                unchecked {
                    ++i;
                }
            }
        }
        nftMintTrackers[daoId].mintInfos[msg.sender].minted += length;
        return _mintNft(daoId, canvasId, mintNftInfos);
    }

    event MintCapSet(bytes32 indexed DAO_id, uint32 mintCap, DesignatedCap[] designatedMintCaps);

    error NotDaoOwner();

    function setMintCapAndPermission(
        bytes32 daoId,
        uint32 _mintCap,
        DesignatedCap[] calldata designatedMintCaps,
        IPermissionControl.Whitelist memory whitelist,
        IPermissionControl.Blacklist memory blacklist,
        IPermissionControl.Blacklist memory unblacklist
    ) public override {
        if (msg.sender != settings.project_proxy() && msg.sender != settings.owner_proxy().ownerOf(daoId)) {
            revert NotDaoOwner();
        }
        NftMintTracker storage mintTracker = nftMintTrackers[daoId];
        mintTracker.mintCap = _mintCap;
        uint256 length = designatedMintCaps.length;
        for (uint256 i = 0; i < length;) {
            mintTracker.mintInfos[designatedMintCaps[i].account].designatedCap = designatedMintCaps[i].cap;
            unchecked {
                ++i;
            }
        }

        emit MintCapSet(daoId, _mintCap, designatedMintCaps);

        settings.permission_control().modifyPermission(daoId, whitelist, blacklist, unblacklist);
    }

    error Blacklisted();
    error NotInWhitelist();

    function _ableToMint(bytes32 daoId, address account, bytes32[] calldata proof, uint256 amount)
        internal
        view
        returns (bool)
    {
        // check priority
        // 1. blacklist
        // 2. designated mint cap
        // 3. whitelist (merkle tree || ERC721)
        // 4. DAO mint cap
        IPermissionControl permissionControl = settings.permission_control();
        if (permissionControl.isMinterBlacklisted(daoId, account)) {
            revert Blacklisted();
        }
        uint32 mintCap;
        uint128 minted;
        uint128 designatedCap;
        {
            NftMintTracker storage mintTracker = nftMintTrackers[daoId];
            mintCap = mintTracker.mintCap;
            MintInfo memory mintInfo = mintTracker.mintInfos[account];
            minted = mintInfo.minted;
            designatedCap = mintInfo.designatedCap;
        }

        bool isWhitelistOff;
        {
            IPermissionControl.Whitelist memory whitelist = permissionControl.getWhitelist(daoId);
            isWhitelistOff = whitelist.minterMerkleRoot == bytes32(0) && whitelist.minterNFTHolderPasses.length == 0;
        }

        uint256 expectedMinted = minted + amount;
        // no whitelist
        if (isWhitelistOff) {
            return mintCap == 0 ? true : expectedMinted <= mintCap;
        }

        // whitelist on && not in whitelist
        if (!permissionControl.inMinterWhitelist(daoId, account, proof)) {
            revert NotInWhitelist();
        }

        // designated mint cap
        return designatedCap != 0 ? expectedMinted <= designatedCap : mintCap != 0 ? expectedMinted <= mintCap : true;
    }

    error InvalidSignature();

    function _verifySignature(
        bytes32 _canvas_id,
        string calldata _token_uri,
        uint256 _flat_price,
        bytes calldata _signature
    ) internal view {
        bytes32 digest = _hashTypedDataV4(
            keccak256(abi.encode(MINTNFT_TYPEHASH, _canvas_id, keccak256(bytes(_token_uri)), _flat_price))
        );
        address signer = ECDSAUpgradeable.recover(digest, _signature);
        if (
            !IAccessControlUpgradeable(address(settings)).hasRole(keccak256("SIGNER_ROLE"), signer)
                && signer != settings.owner_proxy().ownerOf(_canvas_id)
        ) revert InvalidSignature();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/access/IAccessControlUpgradeable.sol";
import "./impl/D4AProject.sol";
import "./impl/D4ACanvas.sol";
import "./impl/D4APrice.sol";
import "./impl/D4AReward.sol";
import "./interface/ID4ASetting.sol";
import "./interface/ID4AProtocol.sol";

abstract contract D4AProtocol is Initializable, ReentrancyGuardUpgradeable, ID4AProtocol {
    using D4AProject for mapping(bytes32 => D4AProject.project_info);
    using D4ACanvas for mapping(bytes32 => D4ACanvas.canvas_info);
    using D4APrice for D4APrice.project_price_info;
    using D4AReward for mapping(bytes32 => D4AReward.reward_info);

    mapping(bytes32 => bool) public uri_exists;

    uint256 public project_num;

    mapping(bytes32 => mapping(uint256 => uint256)) public round_2_total_eth;

    uint256 public canvas_num;

    uint256 public project_bitmap;

    // event from library
    event NewProject(
        bytes32 project_id, string uri, address fee_pool, address erc20_token, address erc721_token, uint256 royalty_fee
    );
    event NewCanvas(bytes32 project_id, bytes32 canvas_id, string uri);

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    error NotRole(bytes32 role, address account);

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev Revert with a standard message if `msg.sender` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, msg.sender);
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!_hasRole(role, account)) {
            revert NotRole(role, account);
        }
    }

    function _hasRole(bytes32 role, address account) internal view virtual returns (bool) {
        return IAccessControlUpgradeable(address(settings)).hasRole(role, account);
    }

    function changeProjectNum(uint256 _project_num) public onlyRole(bytes32(0)) {
        project_num = _project_num;
    }

    function changeSetting(address _settings) public onlyRole(bytes32(0)) {
        settings = ID4ASetting(_settings);
    }

    error NotCaller(address caller);

    modifier onlyCaller(address caller) {
        _checkCaller(caller);
        _;
    }

    function _checkCaller(address caller) internal view {
        if (caller != msg.sender) {
            revert NotCaller(caller);
        }
    }

    modifier d4aNotPaused() {
        _checkPauseStatus();
        _;
    }

    error D4APaused();

    function _checkPauseStatus() internal view {
        if (settings.d4a_pause()) {
            revert D4APaused();
        }
    }

    modifier notPaused(bytes32 id) {
        _checkPauseStatus(id);
        _;
    }

    error Paused(bytes32 id);

    function _checkPauseStatus(bytes32 id) internal view {
        if (settings.pause_status(id)) {
            revert Paused(id);
        }
    }

    error UriAlreadyExist(string uri);

    error UriNotExist(string uri);

    modifier uriExist(string calldata uri) {
        _checkUriExist(uri);
        _;
    }

    modifier uriNotExist(string calldata uri) {
        _checkUriNotExist(uri);
        _;
    }

    function _uriExist(string calldata uri) internal view returns (bool) {
        return uri_exists[keccak256(abi.encodePacked(uri))];
    }

    function _checkUriExist(string calldata uri) internal view {
        if (!_uriExist(uri)) {
            revert UriNotExist(uri);
        }
    }

    function _checkUriNotExist(string calldata uri) internal view {
        if (_uriExist(uri)) {
            revert UriAlreadyExist(uri);
        }
    }

    function createProject(
        uint256 _start_prb,
        uint256 _mintable_rounds,
        uint256 _floor_price_rank,
        uint256 _max_nft_rank,
        uint96 _royalty_fee,
        string calldata _project_uri
    )
        public
        payable
        override
        nonReentrant
        onlyCaller(settings.project_proxy())
        d4aNotPaused
        uriNotExist(_project_uri)
        returns (bytes32 project_id)
    {
        uri_exists[keccak256(abi.encodePacked(_project_uri))] = true;
        project_id = all_projects.createProject(
            settings,
            _start_prb,
            _mintable_rounds,
            _floor_price_rank,
            _max_nft_rank,
            _royalty_fee,
            project_num,
            _project_uri
        );
        project_num++;
    }

    error DaoIndexTooLarge();
    error DaoIndexAlreadyExist();

    function createOwnerProject(
        uint256 _start_prb,
        uint256 _mintable_rounds,
        uint256 _floor_price_rank,
        uint256 _max_nft_rank,
        uint96 _royalty_fee,
        string calldata _project_uri,
        uint256 _project_index
    )
        public
        payable
        override
        nonReentrant
        onlyCaller(settings.project_proxy())
        d4aNotPaused
        returns (
            // uriNotExist(_project_uri)
            bytes32 project_id
        )
    {
        {
            _checkUriNotExist(_project_uri);
        }
        {
            if (_project_index >= settings.reserved_slots()) revert DaoIndexTooLarge();
            if (((project_bitmap >> _project_index) & 1) != 0) revert DaoIndexAlreadyExist();
        }

        {
            project_bitmap |= (1 << _project_index);
            uri_exists[keccak256(abi.encodePacked(_project_uri))] = true;
        }
        {
            return all_projects.createProject(
                settings,
                _start_prb,
                _mintable_rounds,
                _floor_price_rank,
                _max_nft_rank,
                _royalty_fee,
                _project_index,
                _project_uri
            );
        }
    }

    function getProjectCanvasCount(bytes32 _project_id) public view returns (uint256) {
        return all_projects.getProjectCanvasCount(_project_id);
    }

    error DaoNotExist();
    error CanvasNotExist();

    modifier daoExist(bytes32 daoId) {
        _checkDaoExist(daoId);
        _;
    }

    function _checkDaoExist(bytes32 daoId) internal view {
        if (!all_projects[daoId].exist) revert DaoNotExist();
    }

    modifier canvasExist(bytes32 canvasId) {
        _checkCanvasExist(canvasId);
        _;
    }

    function _checkCanvasExist(bytes32 canvasId) internal view {
        if (!all_canvases[canvasId].exist) revert CanvasNotExist();
    }

    function _createCanvas(bytes32 _project_id, string calldata _canvas_uri)
        internal
        d4aNotPaused
        daoExist(_project_id)
        notPaused(_project_id)
        uriNotExist(_canvas_uri)
        returns (bytes32 canvas_id)
    {
        uri_exists[keccak256(abi.encodePacked(_canvas_uri))] = true;

        canvas_id = all_canvases.createCanvas(
            settings,
            all_projects[_project_id].fee_pool,
            _project_id,
            all_projects[_project_id].start_prb,
            all_projects.getProjectCanvasCount(_project_id),
            _canvas_uri
        );

        all_projects[_project_id].canvases.push(canvas_id);
    }

    event D4AMintNFT(bytes32 project_id, bytes32 canvas_id, uint256 token_id, string token_uri, uint256 price);

    error NftExceedMaxAmount();

    error PriceTooLow();

    function _mintNft(bytes32 canvasId, string calldata _token_uri, uint256 flatPrice)
        internal
        returns (
            // d4aNotPaused
            // notPaused(canvasId)
            // canvasExist(canvasId)
            // uriNotExist(_token_uri)
            uint256 token_id
        )
    {
        {
            _checkPauseStatus();
            _checkPauseStatus(canvasId);
            _checkCanvasExist(canvasId);
            _checkUriNotExist(_token_uri);
        }
        bytes32 daoId = all_canvases[canvasId].project_id;

        if (flatPrice != 0 && flatPrice < all_projects.getProjectFloorPrice(daoId)) revert PriceTooLow();
        _checkPauseStatus(daoId);

        D4AProject.project_info storage pi = all_projects[daoId];
        D4ACanvas.canvas_info storage ci = all_canvases[canvasId];
        if (pi.nft_supply >= pi.max_nft_amount) revert NftExceedMaxAmount();

        MintVars memory vars;
        vars.currentRound = settings.PRB().currentRound();
        vars.nftPriceMultiplyFactor =
            pi.nftPriceMultiplyFactor == 0 ? settings.defaultNftPriceMultiplyFactor() : pi.nftPriceMultiplyFactor;

        {
            bytes32 token_uri_hash = keccak256(abi.encodePacked(_token_uri));
            uri_exists[token_uri_hash] = true;
        }

        // get next mint price
        GetCanvasNextPriceVars memory getCanvasNextPriceVar;
        getCanvasNextPriceVar.daoId = daoId;
        getCanvasNextPriceVar.canvasId = canvasId;
        getCanvasNextPriceVar.currentRound = vars.currentRound;
        getCanvasNextPriceVar.floorPrices = pi.floor_prices;
        getCanvasNextPriceVar.floorPriceRank = pi.floor_price_rank;
        getCanvasNextPriceVar.startPrb = pi.start_prb;
        getCanvasNextPriceVar.nftPriceMultiplyFactor = vars.nftPriceMultiplyFactor;
        getCanvasNextPriceVar.flatPrice = flatPrice;
        uint256 price = _getCanvasNextPrice(getCanvasNextPriceVar);

        // split fee
        {
            address protocolFeePool = settings.protocol_fee_pool();
            address daoFeePool = pi.fee_pool;
            address canvasOwner = settings.owner_proxy().ownerOf(canvasId);
            uint256 daoShare = (
                flatPrice == 0 ? settings.mint_project_fee_ratio() : settings.mint_project_fee_ratio_flat_price()
            ) * price;
            (vars.daoFee, vars.protocolFee) = _splitFee(protocolFeePool, daoFeePool, canvasOwner, price, daoShare);
        }

        // update
        _updatePrice(vars.currentRound, daoId, canvasId, price, flatPrice, vars.nftPriceMultiplyFactor);

        _updateReward(daoId, canvasId, vars.daoFee, vars.protocolFee, price);

        // mint
        token_id = ID4AERC721(pi.erc721_token).mintItem(msg.sender, _token_uri);
        {
            pi.nft_supply++;
            ci.nft_tokens.push(token_id);
            ci.nft_token_number++;
            tokenid_2_canvas[keccak256(abi.encodePacked(daoId, token_id))] = canvasId;
        }

        emit D4AMintNFT(daoId, canvasId, token_id, _token_uri, price);
    }

    function _updatePrice(
        uint256 currentRound,
        bytes32 daoId,
        bytes32 canvasId,
        uint256 price,
        uint256 flatPrice,
        uint256 nftPriceMultiplyFactor
    ) internal {
        if (flatPrice == 0) {
            all_prices[daoId].updateCanvasPrice(currentRound, canvasId, price, nftPriceMultiplyFactor);
        }
    }

    struct MintNftInfo {
        string tokenUri;
        uint256 flatPrice;
    }

    struct MintVars {
        uint32 length;
        uint256 currentRound;
        uint256 nftPriceMultiplyFactor;
        uint256 priceChangeBasisPoint;
        uint256 price;
        uint256 daoTotalShare;
        uint256 totalPrice;
        uint256 daoFee;
        uint256 protocolFee;
        uint256 initialPrice;
    }

    function _mintNft(bytes32 daoId, bytes32 canvasId, MintNftInfo[] calldata mintNftInfos)
        internal
        returns (
            // d4aNotPaused
            // notPaused(daoId)
            // canvasExist(canvasId)
            // notPaused(canvasId)
            uint256[] memory
        )
    {
        {
            _checkPauseStatus();
            _checkPauseStatus(daoId);
            _checkCanvasExist(canvasId);
            _checkPauseStatus(canvasId);
        }

        MintVars memory vars;
        vars.length = uint32(mintNftInfos.length);
        {
            uint256 projectFloorPrice = all_projects.getProjectFloorPrice(daoId);
            for (uint32 i = 0; i < vars.length;) {
                _checkUriNotExist(mintNftInfos[i].tokenUri);
                if (mintNftInfos[i].flatPrice != 0 && mintNftInfos[i].flatPrice < projectFloorPrice) {
                    revert PriceTooLow();
                }
                unchecked {
                    ++i;
                }
            }
        }

        D4AProject.project_info storage pi = all_projects[daoId];
        D4ACanvas.canvas_info storage ci = all_canvases[canvasId];
        if (pi.nft_supply >= pi.max_nft_amount) revert NftExceedMaxAmount();

        vars.currentRound = settings.PRB().currentRound();
        vars.nftPriceMultiplyFactor =
            pi.nftPriceMultiplyFactor == 0 ? settings.defaultNftPriceMultiplyFactor() : pi.nftPriceMultiplyFactor;
        vars.priceChangeBasisPoint = D4APrice._PRICE_CHANGE_BASIS_POINT;

        GetCanvasNextPriceVars memory getCanvasNextPriceVar;
        getCanvasNextPriceVar.daoId = daoId;
        getCanvasNextPriceVar.currentRound = vars.currentRound;
        getCanvasNextPriceVar.floorPrices = pi.floor_prices;
        getCanvasNextPriceVar.floorPriceRank = pi.floor_price_rank;
        getCanvasNextPriceVar.startPrb = pi.start_prb;
        getCanvasNextPriceVar.nftPriceMultiplyFactor = vars.nftPriceMultiplyFactor;
        vars.price = _getCanvasNextPrice(getCanvasNextPriceVar);
        vars.initialPrice = vars.price;
        vars.daoTotalShare;
        vars.totalPrice;
        uint256[] memory tokenIds = new uint256[](vars.length);
        {
            uint256 mintProjectFeeRatio = settings.mint_project_fee_ratio();
            uint256 mintProjectFeeRatioFlatPrice = settings.mint_project_fee_ratio_flat_price();
            for (uint32 i = 0; i < vars.length;) {
                {
                    bytes32 token_uri_hash = keccak256(abi.encodePacked(mintNftInfos[i].tokenUri));
                    uri_exists[token_uri_hash] = true;
                }

                tokenIds[i] = ID4AERC721(pi.erc721_token).mintItem(msg.sender, mintNftInfos[i].tokenUri);
                {
                    pi.nft_supply++;
                    ci.nft_tokens.push(tokenIds[i]);
                    ci.nft_token_number++;
                    tokenid_2_canvas[keccak256(abi.encodePacked(daoId, tokenIds[i]))] = canvasId;
                }
                uint256 flatPrice = mintNftInfos[i].flatPrice;
                if (flatPrice == 0) {
                    vars.daoTotalShare += mintProjectFeeRatio * vars.price;
                    vars.totalPrice += vars.price;
                    emit D4AMintNFT(daoId, canvasId, tokenIds[i], mintNftInfos[i].tokenUri, vars.price);
                    vars.price *= vars.nftPriceMultiplyFactor / vars.priceChangeBasisPoint;
                } else {
                    vars.daoTotalShare += mintProjectFeeRatioFlatPrice * flatPrice;
                    vars.totalPrice += flatPrice;
                    emit D4AMintNFT(daoId, canvasId, tokenIds[i], mintNftInfos[i].tokenUri, flatPrice);
                }
                unchecked {
                    ++i;
                }
            }
        }

        {
            // split fee
            address protocolFeePool = settings.protocol_fee_pool();
            address daoFeePool = pi.fee_pool;
            address canvasOwner = settings.owner_proxy().ownerOf(canvasId);

            (vars.daoFee, vars.protocolFee) =
                _splitFee(protocolFeePool, daoFeePool, canvasOwner, vars.totalPrice, vars.daoTotalShare);
        }

        // update canvas price
        if (vars.price != vars.initialPrice) {
            vars.price = vars.price * vars.priceChangeBasisPoint / vars.nftPriceMultiplyFactor;
            _updatePrice(vars.currentRound, daoId, canvasId, vars.price, 0, vars.nftPriceMultiplyFactor);
        }

        _updateReward(daoId, canvasId, vars.daoFee, vars.protocolFee, vars.totalPrice);

        return tokenIds;
    }

    struct GetCanvasNextPriceVars {
        bytes32 daoId;
        bytes32 canvasId;
        uint256 currentRound;
        uint256[] floorPrices;
        uint256 floorPriceRank;
        uint256 startPrb;
        uint256 nftPriceMultiplyFactor;
        uint256 flatPrice;
    }

    function _getCanvasNextPrice(GetCanvasNextPriceVars memory vars) internal view returns (uint256 price) {
        if (vars.flatPrice == 0) {
            price = all_prices[vars.daoId].getCanvasNextPrice(
                vars.currentRound,
                vars.floorPrices,
                vars.floorPriceRank,
                vars.startPrb,
                vars.canvasId,
                vars.nftPriceMultiplyFactor
            );
        } else {
            price = vars.flatPrice;
        }
    }

    function _updateReward(bytes32 _project_id, bytes32 canvasId, uint256 daoFee, uint256 protocolFee, uint256 price)
        internal
    {
        D4AProject.project_info memory pi = all_projects[_project_id];

        all_rewards.updateMintWithAmount(
            settings, _project_id, canvasId, price - daoFee - protocolFee, daoFee, pi.mintable_rounds, round_2_total_eth
        );
        all_rewards.updateRewardForCanvas(
            settings, _project_id, canvasId, pi.start_prb, pi.mintable_rounds, pi.erc20_total_supply
        );
    }

    error NotEnoughEther();
    error EthTransferFailed();

    function _splitFee(
        address protocolFeePool,
        address daoFeePool,
        address canvasOwner,
        uint256 price,
        uint256 daoShare
    ) internal returns (uint256 daoFee, uint256 protocolFee) {
        if (msg.value < price) revert NotEnoughEther();

        uint256 exchange = msg.value - price;
        uint256 ratioBasisPoint = settings.ratio_base();

        daoFee = daoShare / ratioBasisPoint;
        protocolFee = price * settings.mint_d4a_fee_ratio() / ratioBasisPoint;

        _transferEth(protocolFeePool, protocolFee);
        _transferEth(daoFeePool, daoFee);
        _transferEth(canvasOwner, price - daoFee - protocolFee);
        _transferEth(msg.sender, exchange);
    }

    function _transferEth(address to, uint256 amount) internal {
        if (amount == 0) return;
        (bool succ,) = to.call{value: amount}("");
        if (!succ) revert EthTransferFailed();
    }

    function getNFTTokenCanvas(bytes32 _project_id, uint256 _token_id) public view returns (bytes32) {
        return tokenid_2_canvas[keccak256(abi.encodePacked(_project_id, _token_id))];
    }

    event D4AClaimProjectERC20Reward(bytes32 project_id, address erc20_token, uint256 amount);
    event D4AExchangeERC20ToETH(
        bytes32 project_id, address owner, address to, uint256 erc20_amount, uint256 eth_amount
    );

    function claimProjectERC20Reward(bytes32 _project_id)
        public
        nonReentrant
        d4aNotPaused
        notPaused(_project_id)
        daoExist(_project_id)
        returns (uint256)
    {
        D4AProject.project_info storage pi = all_projects[_project_id];
        all_rewards.issueTokenToCurrentRound(
            settings, _project_id, pi.erc20_token, pi.start_prb, pi.mintable_rounds, pi.erc20_total_supply
        );
        uint256 amount = all_rewards.claimProjectReward(
            settings, _project_id, pi.erc20_token, pi.start_prb, pi.mintable_rounds, pi.erc20_total_supply
        );
        emit D4AClaimProjectERC20Reward(_project_id, pi.erc20_token, amount);
        return amount;
    }

    function claimProjectERC20RewardWithETH(bytes32 _project_id) public returns (uint256) {
        uint256 erc20_amount = claimProjectERC20Reward(_project_id);
        D4AProject.project_info storage pi = all_projects[_project_id];
        return D4AReward.claimProjectERC20RewardWithETH(
            settings, _project_id, pi.erc20_token, erc20_amount, all_projects[_project_id].fee_pool, round_2_total_eth
        );
    }

    event D4AClaimCanvasReward(bytes32 project_id, bytes32 canvas_id, address erc20_token, uint256 amount);

    function claimCanvasReward(bytes32 canvasId)
        public
        nonReentrant
        d4aNotPaused
        notPaused(canvasId)
        canvasExist(canvasId)
        returns (uint256)
    {
        bytes32 project_id = all_canvases[canvasId].project_id;
        _checkDaoExist(project_id);
        _checkPauseStatus(project_id);

        D4AProject.project_info storage pi = all_projects[project_id];

        all_rewards.issueTokenToCurrentRound(
            settings, project_id, pi.erc20_token, pi.start_prb, pi.mintable_rounds, pi.erc20_total_supply
        );
        uint256 amount = all_rewards.claimCanvasReward(
            settings, project_id, canvasId, pi.erc20_token, pi.start_prb, pi.mintable_rounds, pi.erc20_total_supply
        );
        emit D4AClaimCanvasReward(project_id, canvasId, pi.erc20_token, amount);
        return amount;
    }

    function claimCanvasRewardWithETH(bytes32 canvasId) public returns (uint256) {
        uint256 erc20_amount = claimCanvasReward(canvasId);

        bytes32 project_id = all_canvases[canvasId].project_id;
        D4AProject.project_info storage pi = all_projects[project_id];
        return D4AReward.claimCanvasRewardWithETH(
            settings,
            project_id,
            canvasId,
            pi.erc20_token,
            erc20_amount,
            all_projects[project_id].fee_pool,
            round_2_total_eth
        );
    }

    function exchangeERC20ToETH(bytes32 _project_id, uint256 amount, address _to)
        public
        nonReentrant
        d4aNotPaused
        notPaused(_project_id)
        returns (uint256)
    {
        D4AProject.project_info storage pi = all_projects[_project_id];
        all_rewards.issueTokenToCurrentRound(
            settings, _project_id, pi.erc20_token, pi.start_prb, pi.mintable_rounds, pi.erc20_total_supply
        );
        return D4AReward.ToETH(
            settings, pi.erc20_token, pi.fee_pool, _project_id, msg.sender, _to, amount, round_2_total_eth
        );
    }

    function changeDaoNftPriceMultiplyFactor(bytes32 daoId, uint256 newNftPriceMultiplyFactor)
        public
        onlyRole(bytes32(0))
    {
        require(newNftPriceMultiplyFactor >= 10_000);
        all_projects[daoId].nftPriceMultiplyFactor = newNftPriceMultiplyFactor;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/EIP712.sol)

pragma solidity ^0.8.0;

import "./ECDSAUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 *
 * @custom:storage-size 52
 */
abstract contract EIP712Upgradeable is Initializable {
    /* solhint-disable var-name-mixedcase */
    bytes32 private _HASHED_NAME;
    bytes32 private _HASHED_VERSION;
    bytes32 private constant _TYPE_HASH = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");

    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    function __EIP712_init(string memory name, string memory version) internal onlyInitializing {
        __EIP712_init_unchained(name, version);
    }

    function __EIP712_init_unchained(string memory name, string memory version) internal onlyInitializing {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        return _buildDomainSeparator(_TYPE_HASH, _EIP712NameHash(), _EIP712VersionHash());
    }

    function _buildDomainSeparator(
        bytes32 typeHash,
        bytes32 nameHash,
        bytes32 versionHash
    ) private view returns (bytes32) {
        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSAUpgradeable.toTypedDataHash(_domainSeparatorV4(), structHash);
    }

    /**
     * @dev The hash of the name parameter for the EIP712 domain.
     *
     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
     * are a concern.
     */
    function _EIP712NameHash() internal virtual view returns (bytes32) {
        return _HASHED_NAME;
    }

    /**
     * @dev The hash of the version parameter for the EIP712 domain.
     *
     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
     * are a concern.
     */
    function _EIP712VersionHash() internal virtual view returns (bytes32) {
        return _HASHED_VERSION;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.1) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
     * constructor.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: setting the version to 255 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized < type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _initializing;
    }
}

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

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuardUpgradeable is Initializable {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    function __ReentrancyGuard_init() internal onlyInitializing {
        __ReentrancyGuard_init_unchained();
    }

    function __ReentrancyGuard_init_unchained() internal onlyInitializing {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControlUpgradeable {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

import "../interface/ID4ASetting.sol";
import "../interface/ID4AChangeAdmin.sol";
import "../D4AERC721.sol";
import "../feepool/D4AFeePool.sol";
import "../D4AERC20.sol";

import "@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol";

library D4AProject {
    struct project_info {
        uint256 start_prb;
        uint256 mintable_rounds;
        uint256 floor_price_rank;
        uint256 max_nft_amount;
        uint256 nft_supply;
        uint96 royalty_fee;
        uint256 index;
        address erc20_token;
        address erc721_token;
        address fee_pool;
        string project_uri;
        //from setting
        uint256 erc20_total_supply;
        uint256[] floor_prices;
        bytes32[] canvases;
        bool exist;
        uint256 nftPriceMultiplyFactor;
    }

    using StringsUpgradeable for uint256;

    error D4AInsufficientEther(uint256 required);
    error D4AProjectAlreadyExist(bytes32 project_id);

    event NewProject(
        bytes32 project_id, string uri, address fee_pool, address erc20_token, address erc721_token, uint256 royalty_fee
    );

    function createProject(
        mapping(bytes32 => project_info) storage all_projects,
        ID4ASetting _settings,
        uint256 _start_prb,
        uint256 _mintable_rounds,
        uint256 _floor_price_rank,
        uint256 _max_nft_rank,
        uint96 _royalty_fee,
        uint256 _project_index,
        string memory _project_uri
    ) public returns (bytes32 project_id) {
        require(_settings.project_max_rounds() >= _mintable_rounds, "rounds too long, not support");
        {
            uint256 protocol_fee = _settings.mint_d4a_fee_ratio();
            require(
                _royalty_fee >= _settings.rf_lower_bound() + protocol_fee
                    && _royalty_fee <= _settings.rf_upper_bound() + protocol_fee,
                "royalty fee out of range"
            );
        }
        {
            uint256 minimal = _settings.create_project_fee();
            require(msg.value >= minimal, "not enough ether to create project");
            (bool succ,) = _settings.protocol_fee_pool().call{value: minimal}("");
            require(succ, "transfer fee failed");
            uint256 exchange = msg.value - minimal;
            if (exchange != 0) {
                (succ,) = msg.sender.call{value: exchange}("");
                require(succ, "transfer exchange failed");
            }
        }

        project_id = keccak256(abi.encodePacked(block.number, msg.sender, msg.data, tx.origin));

        if (all_projects[project_id].exist) revert D4AProjectAlreadyExist(project_id);
        {
            project_info storage pi = all_projects[project_id];
            pi.start_prb = _start_prb;
            {
                ID4APRB prb = _settings.PRB();
                uint256 cur_round = prb.currentRound();
                require(_start_prb >= cur_round, "start round already passed");
            }
            pi.mintable_rounds = _mintable_rounds;
            pi.floor_price_rank = _floor_price_rank;
            pi.max_nft_amount = _settings.max_nft_amounts(_max_nft_rank);
            pi.project_uri = _project_uri;
            pi.royalty_fee = _royalty_fee;
            pi.index = _project_index;
            pi.erc20_token = _createERC20Token(_settings, _project_index);

            D4AERC20(pi.erc20_token).grantRole(keccak256("MINTER"), address(this));
            D4AERC20(pi.erc20_token).grantRole(keccak256("BURNER"), address(this));

            address pool = _settings.feepool_factory().createD4AFeePool(
                string(abi.encodePacked("Asset Pool for DAO4Art Project ", _project_index.toString()))
            );

            D4AFeePool(payable(pool)).grantRole(keccak256("AUTO_TRANSFER"), address(this));

            ID4AChangeAdmin(pool).changeAdmin(_settings.asset_pool_owner());
            ID4AChangeAdmin(pi.erc20_token).changeAdmin(_settings.asset_pool_owner());

            pi.fee_pool = pool;

            _settings.owner_proxy().initOwnerOf(project_id, msg.sender);

            pi.erc721_token = _createERC721Token(_settings, _project_index);
            D4AERC721(pi.erc721_token).grantRole(keccak256("ROYALTY"), msg.sender);
            D4AERC721(pi.erc721_token).grantRole(keccak256("MINTER"), address(this));

            D4AERC721(pi.erc721_token).setContractUri(_project_uri);
            ID4AChangeAdmin(pi.erc721_token).changeAdmin(_settings.asset_pool_owner());
            ID4AChangeAdmin(pi.erc721_token).transferOwnership(msg.sender);
            //We copy from setting in case setting may change later.
            pi.erc20_total_supply = _settings.erc20_total_supply();
            for (uint256 i = 0; i < _settings.floor_prices_length(); i++) {
                pi.floor_prices.push(_settings.floor_prices(i));
            }
            require(pi.floor_price_rank < pi.floor_prices.length, "invalid floor price rank");

            pi.exist = true;
            emit NewProject(project_id, _project_uri, pool, pi.erc20_token, pi.erc721_token, _royalty_fee);
        }
    }

    function getProjectCanvasCount(mapping(bytes32 => project_info) storage all_projects, bytes32 _project_id)
        internal
        view
        returns (uint256)
    {
        project_info storage pi = all_projects[_project_id];
        return pi.canvases.length;
    }

    function getProjectCanvasAt(
        mapping(bytes32 => project_info) storage all_projects,
        bytes32 _project_id,
        uint256 _index
    ) internal view returns (bytes32) {
        project_info storage pi = all_projects[_project_id];
        return pi.canvases[_index];
    }

    function getProjectInfo(mapping(bytes32 => project_info) storage all_projects, bytes32 _project_id)
        internal
        view
        returns (
            uint256 start_prb,
            uint256 mintable_rounds,
            uint256 floor_price_rank,
            uint256 max_nft_amount,
            address fee_pool,
            uint96 royalty_fee,
            uint256 index,
            string memory uri,
            uint256 erc20_total_supply
        )
    {
        project_info storage pi = all_projects[_project_id];
        start_prb = pi.start_prb;
        mintable_rounds = pi.mintable_rounds;
        floor_price_rank = pi.floor_price_rank;
        max_nft_amount = pi.max_nft_amount;
        fee_pool = pi.fee_pool;
        royalty_fee = pi.royalty_fee;
        index = pi.index;
        uri = pi.project_uri;
        erc20_total_supply = pi.erc20_total_supply;
    }

    function getProjectFloorPrice(mapping(bytes32 => project_info) storage all_projects, bytes32 _project_id)
        internal
        view
        returns (uint256)
    {
        project_info storage pi = all_projects[_project_id];
        return pi.floor_prices[pi.floor_price_rank];
    }

    /*function toHex16 (bytes16 data) internal pure returns (bytes32 result) {
    result = bytes32 (data) & 0xFFFFFFFFFFFFFFFF000000000000000000000000000000000000000000000000 |
            (bytes32 (data) & 0x0000000000000000FFFFFFFFFFFFFFFF00000000000000000000000000000000) >> 64;
    result = result & 0xFFFFFFFF000000000000000000000000FFFFFFFF000000000000000000000000 |
            (result & 0x00000000FFFFFFFF000000000000000000000000FFFFFFFF0000000000000000) >> 32;
    result = result & 0xFFFF000000000000FFFF000000000000FFFF000000000000FFFF000000000000 |
            (result & 0x0000FFFF000000000000FFFF000000000000FFFF000000000000FFFF00000000) >> 16;
    result = result & 0xFF000000FF000000FF000000FF000000FF000000FF000000FF000000FF000000 |
            (result & 0x00FF000000FF000000FF000000FF000000FF000000FF000000FF000000FF0000) >> 8;
    result = (result & 0xF000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000) >> 4 |
            (result & 0x0F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F00) >> 8;
    result = bytes32 (0x3030303030303030303030303030303030303030303030303030303030303030 +
            uint256 (result) +
            (uint256 (result) + 0x0606060606060606060606060606060606060606060606060606060606060606 >> 4 &
            0x0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F) * 7);

    }

    function toHex (bytes32 data) internal pure returns (string memory) {
    return string (abi.encodePacked (toHex16 (bytes16 (data)), toHex16 (bytes16 (data << 128))));
    }
    function subString(string memory str, uint startIndex, uint endIndex) internal pure returns (string memory) {
    bytes memory strBytes = bytes(str);
    bytes memory result = new bytes(endIndex-startIndex);
    for(uint i = startIndex; i < endIndex; i++) {
          result[i-startIndex] = strBytes[i];
    }
    return string(result);
    }*/

    function _createERC20Token(ID4ASetting _settings, uint256 _project_num) internal returns (address) {
        string memory name = string(abi.encodePacked("D4A Token for No.", _project_num.toString()));
        string memory sym = string(abi.encodePacked("D4A.T", _project_num.toString()));
        return _settings.erc20_factory().createD4AERC20(name, sym, address(this));
    }

    function _createERC721Token(ID4ASetting _settings, uint256 _project_num) internal returns (address) {
        string memory name = string(abi.encodePacked("D4A NFT for No.", _project_num.toString()));
        string memory sym = string(abi.encodePacked("D4A.N", _project_num.toString()));
        return _settings.erc721_factory().createD4AERC721(name, sym);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

import "../interface/ID4ASetting.sol";

library D4ACanvas {
    struct canvas_info {
        bytes32 project_id;
        uint256[] nft_tokens;
        uint256 nft_token_number;
        uint256 index;
        string canvas_uri;
        bool exist;
    }

    error D4AInsufficientEther(uint256 required);
    error D4ACanvasAlreadyExist(bytes32 canvas_id);

    event NewCanvas(bytes32 project_id, bytes32 canvas_id, string uri);

    function createCanvas(
        mapping(bytes32 => canvas_info) storage all_canvases,
        ID4ASetting _settings,
        address fee_pool,
        bytes32 _project_id,
        uint256 _project_start_prb,
        uint256 canvas_num,
        string memory _canvas_uri
    ) public returns (bytes32) {
        {
            ID4APRB prb = _settings.PRB();
            uint256 cur_round = prb.currentRound();
            require(cur_round >= _project_start_prb, "project not start yet");
        }

        {
            uint256 minimal = _settings.create_canvas_fee();
            require(minimal <= msg.value, "not enough ether to create canvas");
            if (msg.value < minimal) revert D4AInsufficientEther(minimal);

            (bool succ,) = fee_pool.call{value: minimal}("");
            require(succ, "transfer fee failed");

            uint256 exchange = msg.value - minimal;
            if (exchange != 0) {
                (succ,) = msg.sender.call{value: exchange}("");
                require(succ, "transfer exchange failed");
            }
        }
        bytes32 canvas_id = keccak256(abi.encodePacked(block.number, msg.sender, msg.data, tx.origin));
        if (all_canvases[canvas_id].exist) revert D4ACanvasAlreadyExist(canvas_id);

        {
            canvas_info storage ci = all_canvases[canvas_id];
            ci.project_id = _project_id;
            ci.canvas_uri = _canvas_uri;
            ci.index = canvas_num + 1;
            _settings.owner_proxy().initOwnerOf(canvas_id, msg.sender);
            ci.exist = true;
        }
        emit NewCanvas(_project_id, canvas_id, _canvas_uri);
        return canvas_id;
    }

    function getCanvasNFTCount(mapping(bytes32 => canvas_info) storage all_canvases, bytes32 _canvas_id)
        internal
        view
        returns (uint256)
    {
        canvas_info storage ci = all_canvases[_canvas_id];
        return ci.nft_token_number;
    }

    function getTokenIDAt(mapping(bytes32 => canvas_info) storage all_canvases, bytes32 _canvas_id, uint256 _index)
        internal
        view
        returns (uint256)
    {
        canvas_info storage ci = all_canvases[_canvas_id];
        return ci.nft_tokens[_index];
    }

    function getCanvasURI(mapping(bytes32 => canvas_info) storage all_canvases, bytes32 _canvas_id)
        internal
        view
        returns (string memory)
    {
        canvas_info storage ci = all_canvases[_canvas_id];
        return ci.canvas_uri;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

import "../interface/ID4ASetting.sol";

library D4APrice {
    uint256 internal constant _PRICE_CHANGE_BASIS_POINT = 10_000;

    struct last_price {
        uint256 round;
        uint256 value;
    }

    struct project_price_info {
        last_price max_price;
        uint256 price_rank;
        uint256[] price_slots;
        mapping(bytes32 => last_price) canvas_price;
    }

    function getCanvasLastPrice(project_price_info storage ppi, bytes32 _canvas_id)
        public
        view
        returns (uint256 round, uint256 value)
    {
        last_price storage lp = ppi.canvas_price[_canvas_id];
        round = lp.round;
        value = lp.value;
    }

    function getCanvasNextPrice(
        project_price_info storage ppi,
        uint256 currentRound,
        uint256[] memory price_slots,
        uint256 price_rank,
        uint256 start_prb,
        bytes32 _canvas_id,
        uint256 multiplyFactor
    ) internal view returns (uint256 price) {
        uint256 floor_price = price_slots[price_rank];
        if (ppi.max_price.round == 0) {
            if (currentRound == start_prb) return floor_price;
            else return (floor_price * _PRICE_CHANGE_BASIS_POINT) / multiplyFactor;
        }
        uint256 first_guess = _get_price_in_round(ppi.canvas_price[_canvas_id], currentRound, multiplyFactor);
        if (first_guess >= floor_price) {
            return first_guess;
        }

        first_guess = _get_price_in_round(ppi.max_price, currentRound, multiplyFactor);
        if (first_guess >= floor_price) {
            return floor_price;
        }
        if (
            ppi.max_price.value == (floor_price * _PRICE_CHANGE_BASIS_POINT) / multiplyFactor
                && currentRound <= ppi.max_price.round + 1
        ) {
            return floor_price;
        }

        return (floor_price * _PRICE_CHANGE_BASIS_POINT) / multiplyFactor;
    }

    function updateCanvasPrice(
        project_price_info storage ppi,
        uint256 currentRound,
        bytes32 _canvas_id,
        uint256 price,
        uint256 multiplyFactor
    ) internal {
        uint256 cp = 0;
        {
            cp = _get_price_in_round(ppi.max_price, currentRound, multiplyFactor);
        }
        if (price >= cp) {
            ppi.max_price.round = currentRound;
            ppi.max_price.value = price;
        }

        ppi.canvas_price[_canvas_id].round = currentRound;
        ppi.canvas_price[_canvas_id].value = price;
    }

    function _get_price_in_round(last_price memory lp, uint256 round, uint256 multiplyFactor)
        internal
        pure
        returns (uint256)
    {
        if (round == lp.round) {
            return (lp.value * multiplyFactor) / _PRICE_CHANGE_BASIS_POINT;
        }
        uint256 k = round - lp.round - 1;
        uint256 value = lp.value;
        for (uint256 i = 0; i < k;) {
            value = (value * _PRICE_CHANGE_BASIS_POINT) / multiplyFactor;
            if (value == 0) {
                return 0;
            }
            unchecked {
                ++i;
            }
        }
        return value;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

import "../interface/ID4ASetting.sol";
import "../feepool/D4AFeePool.sol";

import "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";

interface ID4AMintableERC20 {
    function mint(address to, uint256 amount) external;
    function burn(address from, uint256 amount) external;
}

library D4AReward {
    using SafeERC20Upgradeable for IERC20Upgradeable;

    struct reward_info {
        uint256[] active_rounds;
        uint256 to_issue_round_index;
        uint256 final_issued_round_index;
        uint256 project_owner_to_claim_round_index;
        uint256 issued_rounds;
        mapping(uint256 => uint256) round_2_total_amount;
        mapping(bytes32 => uint256) canvas_2_to_claim_round_index;
        mapping(bytes32 => mapping(uint256 => uint256)) canvas_2_block_2_amount;
        mapping(bytes32 => uint256) canvas_2_unclaimed_amount;
    }

    function issueTokenToCurrentRound(
        mapping(bytes32 => reward_info) storage all_rewards,
        ID4ASetting _settings,
        bytes32 _project_id,
        address erc20_token,
        uint256 _start_round,
        uint256 total_rounds,
        uint256 erc20_total_supply
    ) public returns (uint256) {
        ID4APRB prb = _settings.PRB();
        uint256 cur_round = prb.currentRound();
        if (cur_round <= _start_round) {
            return 0;
        }
        reward_info storage ri = all_rewards[_project_id];

        uint256 n = ri.issued_rounds;
        if (n >= total_rounds) {
            return 0;
        }
        {
            uint256 i = 0;
            for (i = ri.to_issue_round_index; i < ri.active_rounds.length; i++) {
                if (ri.active_rounds[i] == cur_round) {
                    break;
                }
                if (all_rewards[_project_id].round_2_total_amount[ri.active_rounds[i]] != 0) {
                    n = n + 1;
                    all_rewards[_project_id].final_issued_round_index = i;
                    all_rewards[_project_id].to_issue_round_index = i + 1;
                    if (n == total_rounds) {
                        break;
                    }
                }
            }
        }

        uint256 amount = (n - all_rewards[_project_id].issued_rounds) * erc20_total_supply / total_rounds;

        if (amount > 0) ID4AMintableERC20(erc20_token).mint(address(this), amount);
        all_rewards[_project_id].issued_rounds = n;
        return amount;
    }

    function updateMintWithAmount(
        mapping(bytes32 => reward_info) storage all_rewards,
        ID4ASetting _settings,
        bytes32 _project_id,
        bytes32 _canvas_id,
        uint256 _amount,
        uint256 _eth_amount,
        uint256 total_rounds,
        mapping(bytes32 => mapping(uint256 => uint256)) storage round_2_total_eth
    ) public {
        ID4APRB prb = _settings.PRB();
        uint256 cur_round = prb.currentRound();

        reward_info storage ri = all_rewards[_project_id];
        if (ri.active_rounds.length != 0 && ri.active_rounds[ri.active_rounds.length - 1] != cur_round) {
            require(ri.active_rounds.length < total_rounds, "rounds end, cannot mint");
        }

        ri.round_2_total_amount[cur_round] += _amount;
        ri.canvas_2_block_2_amount[_canvas_id][cur_round] += _amount;
        round_2_total_eth[_project_id][cur_round] += _eth_amount;
        if (ri.active_rounds.length == 0) {
            ri.active_rounds.push(cur_round);
        } else {
            if (ri.active_rounds[ri.active_rounds.length - 1] != cur_round) {
                ri.active_rounds.push(cur_round);
            }
        }
    }

    function claimCanvasReward(
        mapping(bytes32 => reward_info) storage all_rewards,
        ID4ASetting _settings,
        bytes32 _project_id,
        bytes32 _canvas_id,
        address _erc20_token,
        uint256 _start_round,
        uint256 _total_rounds,
        uint256 erc20_total_supply
    ) public returns (uint256) {
        updateRewardForCanvas(
            all_rewards, _settings, _project_id, _canvas_id, _start_round, _total_rounds, erc20_total_supply
        );
        reward_info storage ri = all_rewards[_project_id];
        uint256 total_amount = ri.canvas_2_unclaimed_amount[_canvas_id];
        ri.canvas_2_unclaimed_amount[_canvas_id] = 0;

        if (total_amount > 0) {
            address canvas_owner = _settings.owner_proxy().ownerOf(_canvas_id);
            IERC20Upgradeable(_erc20_token).safeTransfer(canvas_owner, total_amount);
        }
        return total_amount;
    }

    function updateRewardForCanvas(
        mapping(bytes32 => reward_info) storage all_rewards,
        ID4ASetting _settings,
        bytes32 _project_id,
        bytes32 _canvas_id,
        uint256 _start_round,
        uint256 _total_rounds,
        uint256 erc20_total_supply
    ) public {
        uint256 cur_round;
        {
            ID4APRB prb = _settings.PRB();
            cur_round = prb.currentRound();
        }

        if (cur_round == _start_round) {
            return;
        }

        uint256 total_amount = 0;
        {
            reward_info storage ri = all_rewards[_project_id];
            if (ri.active_rounds.length == 0) {
                return;
            }
            if (ri.active_rounds.length <= ri.canvas_2_to_claim_round_index[_canvas_id]) {
                return;
            }

            uint256 tk = erc20_total_supply * _settings.canvas_erc20_ratio() / (_settings.ratio_base() * _total_rounds);

            for (uint256 i = ri.canvas_2_to_claim_round_index[_canvas_id]; i <= ri.final_issued_round_index; i++) {
                if (ri.active_rounds[i] == cur_round) {
                    break;
                }
                total_amount += tk * ri.canvas_2_block_2_amount[_canvas_id][ri.active_rounds[i]]
                    / ri.round_2_total_amount[ri.active_rounds[i]];
                ri.canvas_2_to_claim_round_index[_canvas_id] = i + 1;
            }

            ri.canvas_2_unclaimed_amount[_canvas_id] += total_amount;
        }
    }

    function claimCanvasRewardWithETH(
        ID4ASetting _settings,
        bytes32 _project_id,
        bytes32 _canvas_id,
        address erc20_token,
        uint256 erc20_amount,
        address _fee_pool,
        mapping(bytes32 => mapping(uint256 => uint256)) storage round_2_total_eth
    ) public returns (uint256) {
        if (erc20_amount == 0) return 0;
        address _owner = _settings.owner_proxy().ownerOf(_canvas_id);
        uint256 to_send =
            sendETH(_settings, erc20_token, _fee_pool, _project_id, _owner, _owner, erc20_amount, round_2_total_eth);
        return to_send;
    }

    function claimProjectReward(
        mapping(bytes32 => reward_info) storage all_rewards,
        ID4ASetting _settings,
        bytes32 _project_id,
        address erc20_token,
        uint256 _start_round,
        uint256 _total_rounds,
        uint256 erc20_total_supply
    ) public returns (uint256) {
        reward_info storage ri = all_rewards[_project_id];
        if (ri.active_rounds.length == 0) {
            return 0;
        }
        if (ri.active_rounds.length <= ri.project_owner_to_claim_round_index) {
            return 0;
        }

        uint256 from = ri.active_rounds[ri.project_owner_to_claim_round_index];
        if (from == 0) {
            from = _start_round;
        }
        ID4APRB prb = _settings.PRB();
        uint256 cur_round = prb.currentRound();
        if (from == cur_round) {
            return 0;
        }

        uint256 n = ri.final_issued_round_index - ri.project_owner_to_claim_round_index + 1;
        ri.project_owner_to_claim_round_index = ri.final_issued_round_index + 1;

        uint256 d4a_amount =
            erc20_total_supply * _settings.d4a_erc20_ratio() * n / (_settings.ratio_base() * _total_rounds);
        uint256 project_amount =
            erc20_total_supply * _settings.project_erc20_ratio() * n / (_settings.ratio_base() * _total_rounds);

        if (project_amount != 0) {
            address project_owner = _settings.owner_proxy().ownerOf(_project_id);
            IERC20Upgradeable(erc20_token).safeTransfer(project_owner, project_amount);
        }
        if (d4a_amount != 0) {
            IERC20Upgradeable(erc20_token).safeTransfer(_settings.protocol_fee_pool(), d4a_amount);
        }
        return project_amount;
    }

    event D4AExchangeERC20ToETH(
        bytes32 project_id, address owner, address to, uint256 erc20_amount, uint256 eth_amount
    );

    function claimProjectERC20RewardWithETH(
        ID4ASetting _settings,
        bytes32 _project_id,
        address erc20_token,
        uint256 erc20_amount,
        address _fee_pool,
        mapping(bytes32 => mapping(uint256 => uint256)) storage round_2_total_eth
    ) public returns (uint256) {
        if (erc20_amount == 0) return 0;
        address _owner = _settings.owner_proxy().ownerOf(_project_id);
        uint256 to_send =
            sendETH(_settings, erc20_token, _fee_pool, _project_id, _owner, _owner, erc20_amount, round_2_total_eth);
        return to_send;
    }

    function sendETH(
        ID4ASetting _settings,
        address erc20_token,
        address fee_pool,
        bytes32 project_id,
        address _owner,
        address _to,
        uint256 erc20_amount,
        mapping(bytes32 => mapping(uint256 => uint256)) storage round_2_total_eth
    ) public returns (uint256) {
        ID4AMintableERC20(erc20_token).burn(_owner, erc20_amount);
        ID4AMintableERC20(erc20_token).mint(fee_pool, erc20_amount);

        ID4APRB prb = _settings.PRB();
        uint256 cur_round = prb.currentRound();

        uint256 circulate_erc20 = IERC20Upgradeable(erc20_token).totalSupply() + erc20_amount
            - IERC20Upgradeable(erc20_token).balanceOf(fee_pool);
        if (circulate_erc20 == 0) return 0;
        uint256 avaliable_eth = fee_pool.balance - round_2_total_eth[project_id][cur_round];
        uint256 to_send = erc20_amount * avaliable_eth / circulate_erc20;
        if (to_send != 0) {
            D4AFeePool(payable(fee_pool)).transfer(address(0x0), payable(_to), to_send);
        }
        emit D4AExchangeERC20ToETH(project_id, _owner, _to, erc20_amount, to_send);
        return to_send;
    }

    function ToETH(
        ID4ASetting _settings,
        address erc20_token,
        address fee_pool,
        bytes32 project_id,
        address _owner,
        address _to,
        uint256 amount,
        mapping(bytes32 => mapping(uint256 => uint256)) storage round_2_total_eth
    ) public returns (uint256) {
        return sendETH(_settings, erc20_token, fee_pool, project_id, _owner, _to, amount, round_2_total_eth);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

import "./ID4APRB.sol";
import "./ID4AFeePoolFactory.sol";
import "./ID4AERC20Factory.sol";
import "./ID4AOwnerProxy.sol";
import "./ID4AERC721.sol";
import "./ID4AERC721Factory.sol";
import "./IPermissionControl.sol";

interface ID4AProtocolForSetting {
    function getCanvasProject(bytes32 _canvas_id) external view returns (bytes32);
}

contract ID4ASetting {
    uint256 public ratio_base;
    uint256 public min_stamp_duty; //TODO
    uint256 public max_stamp_duty;

    uint256 public create_project_fee;
    address public protocol_fee_pool;
    uint256 public create_canvas_fee;

    uint256 public mint_d4a_fee_ratio;
    uint256 public trade_d4a_fee_ratio;
    uint256 public mint_project_fee_ratio;
    uint256 public mint_project_fee_ratio_flat_price;

    uint256 public erc20_total_supply;

    uint256 public project_max_rounds; //366

    uint256 public project_erc20_ratio;
    uint256 public canvas_erc20_ratio;
    uint256 public d4a_erc20_ratio;

    uint256 public rf_lower_bound;
    uint256 public rf_upper_bound;
    uint256[] public floor_prices;
    uint256[] public max_nft_amounts;

    ID4APRB public PRB;

    string public erc20_name_prefix;
    string public erc20_symbol_prefix;

    ID4AERC721Factory public erc721_factory;
    ID4AERC20Factory public erc20_factory;
    ID4AFeePoolFactory public feepool_factory;
    ID4AOwnerProxy public owner_proxy;
    ID4AProtocolForSetting public protocol;
    IPermissionControl public permission_control;
    address public asset_pool_owner;

    bool public d4a_pause;

    mapping(bytes32 => bool) public pause_status;

    address public WETH;

    address public project_proxy;

    uint256 public reserved_slots;

    uint256 public defaultNftPriceMultiplyFactor;

    constructor() {
        //some default value here
        ratio_base = 10000;
        create_project_fee = 0.1 ether;
        create_canvas_fee = 0.01 ether;
        mint_d4a_fee_ratio = 250;
        trade_d4a_fee_ratio = 250;
        mint_project_fee_ratio = 3000;
        mint_project_fee_ratio_flat_price = 3500;
        rf_lower_bound = 500;
        rf_upper_bound = 1000;

        project_erc20_ratio = 300;
        d4a_erc20_ratio = 200;
        canvas_erc20_ratio = 9500;
        project_max_rounds = 366;
        reserved_slots = 110;

        defaultNftPriceMultiplyFactor = 20_000;
    }

    function floor_prices_length() public view returns (uint256) {
        return floor_prices.length;
    }

    function max_nft_amounts_length() public view returns (uint256) {
        return max_nft_amounts.length;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

import "../impl/D4AProject.sol";
import "../impl/D4ACanvas.sol";
import "../impl/D4APrice.sol";
import "../impl/D4AReward.sol";

struct MintInfo {
    uint32 minted;
    uint32 designatedCap;
}

struct NftMintTracker {
    uint32 mintCap;
    mapping(address => MintInfo) mintInfos;
}

struct DesignatedCap {
    address account;
    uint32 cap;
}

abstract contract ID4AProtocol {
    using D4AProject for mapping(bytes32 => D4AProject.project_info);
    using D4ACanvas for mapping(bytes32 => D4ACanvas.canvas_info);
    using D4APrice for D4APrice.project_price_info;
    using D4AReward for mapping(bytes32 => D4AReward.reward_info);

    mapping(bytes32 => D4AProject.project_info) public all_projects;
    mapping(bytes32 => D4ACanvas.canvas_info) public all_canvases;
    mapping(bytes32 => D4APrice.project_price_info) public all_prices;
    mapping(bytes32 => D4AReward.reward_info) public all_rewards;
    mapping(bytes32 => bytes32) public tokenid_2_canvas;

    ID4ASetting public settings;

    function createProject(
        uint256 _start_prb,
        uint256 _mintable_rounds,
        uint256 _floor_price_rank,
        uint256 _max_nft_rank,
        uint96 _royalty_fee,
        string memory _project_uri
    ) external payable virtual returns (bytes32 project_id);

    function createOwnerProject(
        uint256 _start_prb,
        uint256 _mintable_rounds,
        uint256 _floor_price_rank,
        uint256 _max_nft_rank,
        uint96 _royalty_fee,
        string memory _project_uri,
        uint256 _project_index
    ) external payable virtual returns (bytes32 project_id);

    function getProjectCanvasAt(bytes32 _project_id, uint256 _index) public view returns (bytes32) {
        return all_projects.getProjectCanvasAt(_project_id, _index);
    }

    function getProjectInfo(bytes32 _project_id)
        public
        view
        returns (
            uint256 start_prb,
            uint256 mintable_rounds,
            uint256 floor_price_rank,
            uint256 max_nft_amount,
            address fee_pool,
            uint96 royalty_fee,
            uint256 index,
            string memory uri,
            uint256 erc20_total_supply
        )
    {
        return all_projects.getProjectInfo(_project_id);
    }

    function getProjectFloorPrice(bytes32 _project_id) public view returns (uint256) {
        return all_projects.getProjectFloorPrice(_project_id);
    }

    function getProjectTokens(bytes32 _project_id) public view returns (address erc20_token, address erc721_token) {
        erc20_token = all_projects[_project_id].erc20_token;
        erc721_token = all_projects[_project_id].erc721_token;
    }

    function getCanvasNFTCount(bytes32 _canvas_id) public view returns (uint256) {
        return all_canvases.getCanvasNFTCount(_canvas_id);
    }

    function getTokenIDAt(bytes32 _canvas_id, uint256 _index) public view returns (uint256) {
        return all_canvases.getTokenIDAt(_canvas_id, _index);
    }

    function getCanvasProject(bytes32 _canvas_id) public view returns (bytes32) {
        return all_canvases[_canvas_id].project_id;
    }

    function getCanvasIndex(bytes32 _canvas_id) public view returns (uint256) {
        return all_canvases[_canvas_id].index;
    }

    function getCanvasURI(bytes32 _canvas_id) public view returns (string memory) {
        return all_canvases.getCanvasURI(_canvas_id);
    }

    function getCanvasLastPrice(bytes32 _canvas_id) public view returns (uint256 round, uint256 price) {
        bytes32 proj_id = all_canvases[_canvas_id].project_id;
        return all_prices[proj_id].getCanvasLastPrice(_canvas_id);
    }

    function getCanvasNextPrice(bytes32 _canvas_id) public view returns (uint256) {
        bytes32 project_id = all_canvases[_canvas_id].project_id;
        D4AProject.project_info storage pi = all_projects[project_id];
        return all_prices[project_id].getCanvasNextPrice(
            settings.PRB().currentRound(),
            pi.floor_prices,
            pi.floor_price_rank,
            pi.start_prb,
            _canvas_id,
            pi.nftPriceMultiplyFactor == 0 ? settings.defaultNftPriceMultiplyFactor() : pi.nftPriceMultiplyFactor
        );
    }

    function setMintCapAndPermission(
        bytes32 _DAO_id,
        uint32 _mintCap,
        DesignatedCap[] calldata designatedMintCaps,
        IPermissionControl.Whitelist memory whitelist,
        IPermissionControl.Blacklist memory blacklist,
        IPermissionControl.Blacklist memory unblacklist
    ) external virtual;
}

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

pragma solidity ^0.8.0;

import "../StringsUpgradeable.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSAUpgradeable {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV // Deprecated in v4.8
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", StringsUpgradeable.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

// 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 AddressUpgradeable {
    /**
     * @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 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
pragma solidity >=0.8.10;

interface ID4AChangeAdmin {
    function changeAdmin(address new_admin) external;
    function transferOwnership(address new_owner) external;
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/ERC721URIStorageUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/ERC721RoyaltyUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/CountersUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts/proxy/Clones.sol";
import "./interface/ID4AERC721Factory.sol";

contract D4AERC721 is
    Initializable,
    ERC721URIStorageUpgradeable,
    AccessControlUpgradeable,
    ERC721RoyaltyUpgradeable,
    OwnableUpgradeable
{
    using CountersUpgradeable for CountersUpgradeable.Counter;

    CountersUpgradeable.Counter internal _tokenIds;

    bytes32 public constant MINTER = keccak256("MINTER");
    bytes32 public constant ROYALTY_OWNER = keccak256("ROYALTY");

    string internal project_uri;

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    function setContractUri(string memory _uri) public onlyOwner {
        project_uri = _uri;
    }

    function contractURI() public view returns (string memory) {
        return project_uri;
    }

    function initialize(string memory name, string memory symbol) public virtual initializer {
        __D4AERC721_init(name, symbol);
    }

    function __D4AERC721_init(string memory name, string memory symbol) internal onlyInitializing {
        __ERC721_init(name, symbol);
        __ERC721URIStorage_init();
        __ERC721Royalty_init();

        __AccessControl_init();
        __Ownable_init();

        _setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
        _tokenIds.reset();
    }

    function mintItem(address player, string memory uri) public onlyRole(MINTER) returns (uint256) {
        _tokenIds.increment();
        uint256 newItemId = _tokenIds.current();
        _mint(player, newItemId);
        _setTokenURI(newItemId, uri);
        return newItemId;
    }

    function setRoyaltyInfo(address _receiver, uint96 _royaltyFeeInBips) public onlyRole(ROYALTY_OWNER) {
        _setDefaultRoyalty(_receiver, _royaltyFeeInBips);
    }

    function _burn(uint256 _tokenId) internal override(ERC721URIStorageUpgradeable, ERC721RoyaltyUpgradeable) {
        super._burn(_tokenId);
    }

    function supportsInterface(bytes4 interfaceId)
        public
        view
        override(ERC721Upgradeable, AccessControlUpgradeable, ERC721RoyaltyUpgradeable)
        returns (bool)
    {
        return super.supportsInterface(interfaceId);
    }

    function tokenURI(uint256 tokenId)
        public
        view
        override(ERC721Upgradeable, ERC721URIStorageUpgradeable)
        returns (string memory)
    {
        return super.tokenURI(tokenId);
    }

    function changeAdmin(address new_admin) public onlyRole(DEFAULT_ADMIN_ROLE) {
        require(msg.sender != new_admin, "new admin cannot be same as old one");
        _grantRole(DEFAULT_ADMIN_ROLE, new_admin);
        _revokeRole(DEFAULT_ADMIN_ROLE, msg.sender);
    }
}

contract D4AERC721Factory is ID4AERC721Factory {
    using Clones for address;

    D4AERC721 impl;

    event NewD4AERC721(address addr);

    constructor() {
        impl = new D4AERC721();
    }

    function createD4AERC721(string memory _name, string memory _symbol) public returns (address) {
        address t = address(impl).clone();
        D4AERC721(t).initialize(_name, _symbol);
        D4AERC721(t).changeAdmin(msg.sender);
        D4AERC721(t).transferOwnership(msg.sender);
        emit NewD4AERC721(t);
        return t;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

import "@openzeppelin/contracts/proxy/Clones.sol";
import "@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol";

import "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol";

contract D4AFeePool is AccessControlUpgradeable, ReentrancyGuardUpgradeable {
    using SafeERC20Upgradeable for IERC20Upgradeable;

    string public name;
    bytes32 public constant AUTO_TRANSFER = keccak256("AUTO_TRANSFER");

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    function initialize(string memory _name) public initializer {
        __ReentrancyGuard_init();
        __AccessControl_init();
        _setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
        name = _name;
    }

    function transfer(address erc20_token_addr, address payable to, uint256 tokens)
        public
        nonReentrant
        returns (bool success)
    {
        require(
            hasRole(DEFAULT_ADMIN_ROLE, msg.sender) || hasRole(AUTO_TRANSFER, msg.sender),
            "only admin or auto transfer can call this"
        );

        if (erc20_token_addr == address(0x0)) {
            (bool succ,) = to.call{value: tokens}("");
            require(succ, "transfer eth failed");
            return true;
        }

        IERC20Upgradeable(erc20_token_addr).safeTransfer(to, tokens);
        return true;
    }

    receive() external payable {}

    function changeAdmin(address new_admin) public onlyRole(DEFAULT_ADMIN_ROLE) {
        require(msg.sender != new_admin, "new admin cannot be same as old one");
        _grantRole(DEFAULT_ADMIN_ROLE, new_admin);
        _revokeRole(DEFAULT_ADMIN_ROLE, msg.sender);
    }
}

contract D4AFeePoolFactory {
    using Clones for address;

    D4AFeePool public impl;
    address public proxy_admin;

    constructor() {
        proxy_admin = address(new ProxyAdmin());
        ProxyAdmin(proxy_admin).transferOwnership(msg.sender);
        impl = new D4AFeePool();
    }

    event NewD4AFeePool(address proxy, address admin);

    function createD4AFeePool(string memory _name) public returns (address pool) {
        bytes memory data = abi.encodeWithSignature("initialize(string)", _name);
        TransparentUpgradeableProxy proxy = new TransparentUpgradeableProxy(address(impl), proxy_admin, data);
        D4AFeePool(payable(address(proxy))).changeAdmin(msg.sender);
        emit NewD4AFeePool(address(proxy), proxy_admin);
        return address(proxy);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

import "@openzeppelin/contracts-upgradeable/token/ERC20/extensions/draft-ERC20PermitUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts/proxy/Clones.sol";
import "./interface/ID4AERC20Factory.sol";

contract D4AERC20 is Initializable, ERC20PermitUpgradeable, AccessControlUpgradeable {
    bytes32 public constant MINTER = keccak256("MINTER");
    bytes32 public constant BURNER = keccak256("BURNER");

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    function initialize(string memory name, string memory symbol, address _minter) public initializer {
        __ERC20Permit_init(name);
        __ERC20_init(name, symbol);
        __AccessControl_init();
        _setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
        _setupRole(MINTER, _minter);
    }

    function mint(address to, uint256 amount) public {
        require(hasRole(MINTER, msg.sender), "only for minter");
        super._mint(to, amount);
    }

    function burn(address from, uint256 amount) public {
        require(hasRole(BURNER, msg.sender), "only for burner");
        super._burn(from, amount);
    }

    function changeAdmin(address new_admin) public onlyRole(DEFAULT_ADMIN_ROLE) {
        require(msg.sender != new_admin, "new admin cannot be same as old one");
        _grantRole(DEFAULT_ADMIN_ROLE, new_admin);
        _revokeRole(DEFAULT_ADMIN_ROLE, msg.sender);
    }
}

contract D4AERC20Factory is ID4AERC20Factory {
    using Clones for address;

    D4AERC20 public impl;

    event NewD4AERC20(address addr);

    constructor() {
        impl = new D4AERC20();
    }

    function createD4AERC20(string memory _name, string memory _symbol, address _minter) public returns (address) {
        address t = address(impl).clone();
        D4AERC20(t).initialize(_name, _symbol, _minter);
        D4AERC20(t).changeAdmin(msg.sender);
        emit NewD4AERC20(t);
        return t;
    }
}

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

pragma solidity ^0.8.0;

import "./math/MathUpgradeable.sol";

/**
 * @dev String operations.
 */
library StringsUpgradeable {
    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 = MathUpgradeable.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, MathUpgradeable.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 (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20Upgradeable.sol";
import "../extensions/draft-IERC20PermitUpgradeable.sol";
import "../../../utils/AddressUpgradeable.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20Upgradeable {
    using AddressUpgradeable for address;

    function safeTransfer(
        IERC20Upgradeable token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20Upgradeable token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20Upgradeable token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20Upgradeable token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20Upgradeable token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    function safePermit(
        IERC20PermitUpgradeable token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20Upgradeable token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20Upgradeable {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

interface ID4APRB {
    function isStart() external view returns (bool);
    function currentRound() external view returns (uint256);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

interface ID4AFeePoolFactory {
    function createD4AFeePool(string memory _name) external returns (address pool);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

interface ID4AERC20Factory {
    function createD4AERC20(string memory _name, string memory _symbol, address _minter) external returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

interface ID4AOwnerProxy {
    function ownerOf(bytes32 hash) external view returns (address);
    function initOwnerOf(bytes32 hash, address addr) external returns (bool);
    function transferOwnership(bytes32 hash, address newOwner) external;
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

interface ID4AERC721 {
    function mintItem(address player, string memory tokenURI) external returns (uint256);

    function setRoyaltyInfo(address _receiver, uint96 _royaltyFeeInBips) external;
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

interface ID4AERC721Factory {
    function createD4AERC721(string memory _name, string memory _symbol) external returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.10;

import "./ID4AOwnerProxy.sol";

interface IPermissionControl {
    struct Blacklist {
        address[] minterAccounts;
        address[] canvasCreatorAccounts;
    }

    struct Whitelist {
        bytes32 minterMerkleRoot;
        address[] minterNFTHolderPasses;
        bytes32 canvasCreatorMerkleRoot;
        address[] canvasCreatorNFTHolderPasses;
    }

    event MinterBlacklisted(bytes32 indexed daoId, address indexed account);

    event CanvasCreatorBlacklisted(bytes32 indexed daoId, address indexed account);

    event MinterUnBlacklisted(bytes32 indexed daoId, address indexed account);

    event CanvasCreatorUnBlacklisted(bytes32 indexed daoId, address indexed account);

    event WhitelistModified(bytes32 indexed daoId, Whitelist whitelist);

    function getWhitelist(bytes32 daoId) external view returns (Whitelist calldata whitelist);

    function addPermissionWithSignature(
        bytes32 daoId,
        Whitelist calldata whitelist,
        Blacklist calldata blacklist,
        bytes calldata signature
    ) external;

    function addPermission(bytes32 daoId, Whitelist calldata whitelist, Blacklist calldata blacklist) external;

    function modifyPermission(
        bytes32 daoId,
        Whitelist calldata whitelist,
        Blacklist calldata blacklist,
        Blacklist calldata unblacklist
    ) external;

    function isMinterBlacklisted(bytes32 daoId, address _account) external view returns (bool);

    function isCanvasCreatorBlacklisted(bytes32 daoId, address _account) external view returns (bool);

    function inMinterWhitelist(bytes32 daoId, address _account, bytes32[] calldata _proof)
        external
        view
        returns (bool);

    function inCanvasCreatorWhitelist(bytes32 daoId, address _account, bytes32[] calldata _proof)
        external
        view
        returns (bool);

    function setOwnerProxy(ID4AOwnerProxy _ownerProxy) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/extensions/ERC721URIStorage.sol)

pragma solidity ^0.8.0;

import "../ERC721Upgradeable.sol";
import "../../../proxy/utils/Initializable.sol";

/**
 * @dev ERC721 token with storage based token URI management.
 */
abstract contract ERC721URIStorageUpgradeable is Initializable, ERC721Upgradeable {
    function __ERC721URIStorage_init() internal onlyInitializing {
    }

    function __ERC721URIStorage_init_unchained() internal onlyInitializing {
    }
    using StringsUpgradeable for uint256;

    // Optional mapping for token URIs
    mapping(uint256 => string) private _tokenURIs;

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

        string memory _tokenURI = _tokenURIs[tokenId];
        string memory base = _baseURI();

        // If there is no base URI, return the token URI.
        if (bytes(base).length == 0) {
            return _tokenURI;
        }
        // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
        if (bytes(_tokenURI).length > 0) {
            return string(abi.encodePacked(base, _tokenURI));
        }

        return super.tokenURI(tokenId);
    }

    /**
     * @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
        require(_exists(tokenId), "ERC721URIStorage: URI set of nonexistent token");
        _tokenURIs[tokenId] = _tokenURI;
    }

    /**
     * @dev See {ERC721-_burn}. This override additionally checks to see if a
     * token-specific URI was set for the token, and if so, it deletes the token URI from
     * the storage mapping.
     */
    function _burn(uint256 tokenId) internal virtual override {
        super._burn(tokenId);

        if (bytes(_tokenURIs[tokenId]).length != 0) {
            delete _tokenURIs[tokenId];
        }
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/extensions/ERC721Royalty.sol)

pragma solidity ^0.8.0;

import "../ERC721Upgradeable.sol";
import "../../common/ERC2981Upgradeable.sol";
import "../../../utils/introspection/ERC165Upgradeable.sol";
import "../../../proxy/utils/Initializable.sol";

/**
 * @dev Extension of ERC721 with the ERC2981 NFT Royalty Standard, a standardized way to retrieve royalty payment
 * information.
 *
 * Royalty information can be specified globally for all token ids via {ERC2981-_setDefaultRoyalty}, and/or individually for
 * specific token ids via {ERC2981-_setTokenRoyalty}. The latter takes precedence over the first.
 *
 * IMPORTANT: ERC-2981 only specifies a way to signal royalty information and does not enforce its payment. See
 * https://eips.ethereum.org/EIPS/eip-2981#optional-royalty-payments[Rationale] in the EIP. Marketplaces are expected to
 * voluntarily pay royalties together with sales, but note that this standard is not yet widely supported.
 *
 * _Available since v4.5._
 */
abstract contract ERC721RoyaltyUpgradeable is Initializable, ERC2981Upgradeable, ERC721Upgradeable {
    function __ERC721Royalty_init() internal onlyInitializing {
    }

    function __ERC721Royalty_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC721Upgradeable, ERC2981Upgradeable) returns (bool) {
        return super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {ERC721-_burn}. This override additionally clears the royalty information for the token.
     */
    function _burn(uint256 tokenId) internal virtual override {
        super._burn(tokenId);
        _resetTokenRoyalty(tokenId);
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

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

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library CountersUpgradeable {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

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

pragma solidity ^0.8.0;

import "./IAccessControlUpgradeable.sol";
import "../utils/ContextUpgradeable.sol";
import "../utils/StringsUpgradeable.sol";
import "../utils/introspection/ERC165Upgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControlUpgradeable, ERC165Upgradeable {
    function __AccessControl_init() internal onlyInitializing {
    }

    function __AccessControl_init_unchained() internal onlyInitializing {
    }
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

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

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        StringsUpgradeable.toHexString(account),
                        " is missing role ",
                        StringsUpgradeable.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * May emit a {RoleGranted} event.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal onlyInitializing {
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal onlyInitializing {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

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

pragma solidity ^0.8.0;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
 * deploying minimal proxy contracts, also known as "clones".
 *
 * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
 * > a minimal bytecode implementation that delegates all calls to a known, fixed address.
 *
 * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
 * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
 * deterministic method.
 *
 * _Available since v3.4._
 */
library Clones {
    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create opcode, which should never revert.
     */
    function clone(address implementation) internal returns (address instance) {
        /// @solidity memory-safe-assembly
        assembly {
            // Cleans the upper 96 bits of the `implementation` word, then packs the first 3 bytes
            // of the `implementation` address with the bytecode before the address.
            mstore(0x00, or(shr(0xe8, shl(0x60, implementation)), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000))
            // Packs the remaining 17 bytes of `implementation` with the bytecode after the address.
            mstore(0x20, or(shl(0x78, implementation), 0x5af43d82803e903d91602b57fd5bf3))
            instance := create(0, 0x09, 0x37)
        }
        require(instance != address(0), "ERC1167: create failed");
    }

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create2 opcode and a `salt` to deterministically deploy
     * the clone. Using the same `implementation` and `salt` multiple time will revert, since
     * the clones cannot be deployed twice at the same address.
     */
    function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
        /// @solidity memory-safe-assembly
        assembly {
            // Cleans the upper 96 bits of the `implementation` word, then packs the first 3 bytes
            // of the `implementation` address with the bytecode before the address.
            mstore(0x00, or(shr(0xe8, shl(0x60, implementation)), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000))
            // Packs the remaining 17 bytes of `implementation` with the bytecode after the address.
            mstore(0x20, or(shl(0x78, implementation), 0x5af43d82803e903d91602b57fd5bf3))
            instance := create2(0, 0x09, 0x37, salt)
        }
        require(instance != address(0), "ERC1167: create2 failed");
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt,
        address deployer
    ) internal pure returns (address predicted) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(add(ptr, 0x38), deployer)
            mstore(add(ptr, 0x24), 0x5af43d82803e903d91602b57fd5bf3ff)
            mstore(add(ptr, 0x14), implementation)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73)
            mstore(add(ptr, 0x58), salt)
            mstore(add(ptr, 0x78), keccak256(add(ptr, 0x0c), 0x37))
            predicted := keccak256(add(ptr, 0x43), 0x55)
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(address implementation, bytes32 salt)
        internal
        view
        returns (address predicted)
    {
        return predictDeterministicAddress(implementation, salt, address(this));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/transparent/ProxyAdmin.sol)

pragma solidity ^0.8.0;

import "./TransparentUpgradeableProxy.sol";
import "../../access/Ownable.sol";

/**
 * @dev This is an auxiliary contract meant to be assigned as the admin of a {TransparentUpgradeableProxy}. For an
 * explanation of why you would want to use this see the documentation for {TransparentUpgradeableProxy}.
 */
contract ProxyAdmin is Ownable {
    /**
     * @dev Returns the current implementation of `proxy`.
     *
     * Requirements:
     *
     * - This contract must be the admin of `proxy`.
     */
    function getProxyImplementation(TransparentUpgradeableProxy proxy) public view virtual returns (address) {
        // We need to manually run the static call since the getter cannot be flagged as view
        // bytes4(keccak256("implementation()")) == 0x5c60da1b
        (bool success, bytes memory returndata) = address(proxy).staticcall(hex"5c60da1b");
        require(success);
        return abi.decode(returndata, (address));
    }

    /**
     * @dev Returns the current admin of `proxy`.
     *
     * Requirements:
     *
     * - This contract must be the admin of `proxy`.
     */
    function getProxyAdmin(TransparentUpgradeableProxy proxy) public view virtual returns (address) {
        // We need to manually run the static call since the getter cannot be flagged as view
        // bytes4(keccak256("admin()")) == 0xf851a440
        (bool success, bytes memory returndata) = address(proxy).staticcall(hex"f851a440");
        require(success);
        return abi.decode(returndata, (address));
    }

    /**
     * @dev Changes the admin of `proxy` to `newAdmin`.
     *
     * Requirements:
     *
     * - This contract must be the current admin of `proxy`.
     */
    function changeProxyAdmin(TransparentUpgradeableProxy proxy, address newAdmin) public virtual onlyOwner {
        proxy.changeAdmin(newAdmin);
    }

    /**
     * @dev Upgrades `proxy` to `implementation`. See {TransparentUpgradeableProxy-upgradeTo}.
     *
     * Requirements:
     *
     * - This contract must be the admin of `proxy`.
     */
    function upgrade(TransparentUpgradeableProxy proxy, address implementation) public virtual onlyOwner {
        proxy.upgradeTo(implementation);
    }

    /**
     * @dev Upgrades `proxy` to `implementation` and calls a function on the new implementation. See
     * {TransparentUpgradeableProxy-upgradeToAndCall}.
     *
     * Requirements:
     *
     * - This contract must be the admin of `proxy`.
     */
    function upgradeAndCall(
        TransparentUpgradeableProxy proxy,
        address implementation,
        bytes memory data
    ) public payable virtual onlyOwner {
        proxy.upgradeToAndCall{value: msg.value}(implementation, data);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/transparent/TransparentUpgradeableProxy.sol)

pragma solidity ^0.8.0;

import "../ERC1967/ERC1967Proxy.sol";

/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 *
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
 * clashing], which can potentially be used in an attack, this contract uses the
 * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
 * things that go hand in hand:
 *
 * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
 * that call matches one of the admin functions exposed by the proxy itself.
 * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
 * implementation. If the admin tries to call a function on the implementation it will fail with an error that says
 * "admin cannot fallback to proxy target".
 *
 * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
 * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
 * to sudden errors when trying to call a function from the proxy implementation.
 *
 * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
 * you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
 */
contract TransparentUpgradeableProxy is ERC1967Proxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {ERC1967Proxy-constructor}.
     */
    constructor(
        address _logic,
        address admin_,
        bytes memory _data
    ) payable ERC1967Proxy(_logic, _data) {
        _changeAdmin(admin_);
    }

    /**
     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
     */
    modifier ifAdmin() {
        if (msg.sender == _getAdmin()) {
            _;
        } else {
            _fallback();
        }
    }

    /**
     * @dev Returns the current admin.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function admin() external ifAdmin returns (address admin_) {
        admin_ = _getAdmin();
    }

    /**
     * @dev Returns the current implementation.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
     */
    function implementation() external ifAdmin returns (address implementation_) {
        implementation_ = _implementation();
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
     */
    function changeAdmin(address newAdmin) external virtual ifAdmin {
        _changeAdmin(newAdmin);
    }

    /**
     * @dev Upgrade the implementation of the proxy.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    function upgradeTo(address newImplementation) external ifAdmin {
        _upgradeToAndCall(newImplementation, bytes(""), false);
    }

    /**
     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
     * proxied contract.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
        _upgradeToAndCall(newImplementation, data, true);
    }

    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view virtual returns (address) {
        return _getAdmin();
    }

    /**
     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
     */
    function _beforeFallback() internal virtual override {
        require(msg.sender != _getAdmin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
        super._beforeFallback();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/extensions/draft-ERC20Permit.sol)

pragma solidity ^0.8.0;

import "./draft-IERC20PermitUpgradeable.sol";
import "../ERC20Upgradeable.sol";
import "../../../utils/cryptography/ECDSAUpgradeable.sol";
import "../../../utils/cryptography/EIP712Upgradeable.sol";
import "../../../utils/CountersUpgradeable.sol";
import "../../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * _Available since v3.4._
 *
 * @custom:storage-size 51
 */
abstract contract ERC20PermitUpgradeable is Initializable, ERC20Upgradeable, IERC20PermitUpgradeable, EIP712Upgradeable {
    using CountersUpgradeable for CountersUpgradeable.Counter;

    mapping(address => CountersUpgradeable.Counter) private _nonces;

    // solhint-disable-next-line var-name-mixedcase
    bytes32 private constant _PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    /**
     * @dev In previous versions `_PERMIT_TYPEHASH` was declared as `immutable`.
     * However, to ensure consistency with the upgradeable transpiler, we will continue
     * to reserve a slot.
     * @custom:oz-renamed-from _PERMIT_TYPEHASH
     */
    // solhint-disable-next-line var-name-mixedcase
    bytes32 private _PERMIT_TYPEHASH_DEPRECATED_SLOT;

    /**
     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
     *
     * It's a good idea to use the same `name` that is defined as the ERC20 token name.
     */
    function __ERC20Permit_init(string memory name) internal onlyInitializing {
        __EIP712_init_unchained(name, "1");
    }

    function __ERC20Permit_init_unchained(string memory) internal onlyInitializing {}

    /**
     * @dev See {IERC20Permit-permit}.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual override {
        require(block.timestamp <= deadline, "ERC20Permit: expired deadline");

        bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));

        bytes32 hash = _hashTypedDataV4(structHash);

        address signer = ECDSAUpgradeable.recover(hash, v, r, s);
        require(signer == owner, "ERC20Permit: invalid signature");

        _approve(owner, spender, value);
    }

    /**
     * @dev See {IERC20Permit-nonces}.
     */
    function nonces(address owner) public view virtual override returns (uint256) {
        return _nonces[owner].current();
    }

    /**
     * @dev See {IERC20Permit-DOMAIN_SEPARATOR}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view override returns (bytes32) {
        return _domainSeparatorV4();
    }

    /**
     * @dev "Consume a nonce": return the current value and increment.
     *
     * _Available since v4.1._
     */
    function _useNonce(address owner) internal virtual returns (uint256 current) {
        CountersUpgradeable.Counter storage nonce = _nonces[owner];
        current = nonce.current();
        nonce.increment();
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// 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 MathUpgradeable {
    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);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20PermitUpgradeable {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.2) (token/ERC721/ERC721.sol)

pragma solidity ^0.8.0;

import "./IERC721Upgradeable.sol";
import "./IERC721ReceiverUpgradeable.sol";
import "./extensions/IERC721MetadataUpgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../utils/StringsUpgradeable.sol";
import "../../utils/introspection/ERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.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 ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable {
    using AddressUpgradeable for address;
    using StringsUpgradeable 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.
     */
    function __ERC721_init(string memory name_, string memory symbol_) internal onlyInitializing {
        __ERC721_init_unchained(name_, symbol_);
    }

    function __ERC721_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) {
        return
            interfaceId == type(IERC721Upgradeable).interfaceId ||
            interfaceId == type(IERC721MetadataUpgradeable).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 = ERC721Upgradeable.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 = ERC721Upgradeable.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 = ERC721Upgradeable.ownerOf(tokenId);

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

        // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook
        owner = ERC721Upgradeable.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(ERC721Upgradeable.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(ERC721Upgradeable.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(ERC721Upgradeable.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 IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
                return retval == IERC721ReceiverUpgradeable.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    /// @solidity memory-safe-assembly
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

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

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

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[44] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/common/ERC2981.sol)

pragma solidity ^0.8.0;

import "../../interfaces/IERC2981Upgradeable.sol";
import "../../utils/introspection/ERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the NFT Royalty Standard, a standardized way to retrieve royalty payment information.
 *
 * Royalty information can be specified globally for all token ids via {_setDefaultRoyalty}, and/or individually for
 * specific token ids via {_setTokenRoyalty}. The latter takes precedence over the first.
 *
 * Royalty is specified as a fraction of sale price. {_feeDenominator} is overridable but defaults to 10000, meaning the
 * fee is specified in basis points by default.
 *
 * IMPORTANT: ERC-2981 only specifies a way to signal royalty information and does not enforce its payment. See
 * https://eips.ethereum.org/EIPS/eip-2981#optional-royalty-payments[Rationale] in the EIP. Marketplaces are expected to
 * voluntarily pay royalties together with sales, but note that this standard is not yet widely supported.
 *
 * _Available since v4.5._
 */
abstract contract ERC2981Upgradeable is Initializable, IERC2981Upgradeable, ERC165Upgradeable {
    function __ERC2981_init() internal onlyInitializing {
    }

    function __ERC2981_init_unchained() internal onlyInitializing {
    }
    struct RoyaltyInfo {
        address receiver;
        uint96 royaltyFraction;
    }

    RoyaltyInfo private _defaultRoyaltyInfo;
    mapping(uint256 => RoyaltyInfo) private _tokenRoyaltyInfo;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165Upgradeable, ERC165Upgradeable) returns (bool) {
        return interfaceId == type(IERC2981Upgradeable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @inheritdoc IERC2981Upgradeable
     */
    function royaltyInfo(uint256 _tokenId, uint256 _salePrice) public view virtual override returns (address, uint256) {
        RoyaltyInfo memory royalty = _tokenRoyaltyInfo[_tokenId];

        if (royalty.receiver == address(0)) {
            royalty = _defaultRoyaltyInfo;
        }

        uint256 royaltyAmount = (_salePrice * royalty.royaltyFraction) / _feeDenominator();

        return (royalty.receiver, royaltyAmount);
    }

    /**
     * @dev The denominator with which to interpret the fee set in {_setTokenRoyalty} and {_setDefaultRoyalty} as a
     * fraction of the sale price. Defaults to 10000 so fees are expressed in basis points, but may be customized by an
     * override.
     */
    function _feeDenominator() internal pure virtual returns (uint96) {
        return 10000;
    }

    /**
     * @dev Sets the royalty information that all ids in this contract will default to.
     *
     * Requirements:
     *
     * - `receiver` cannot be the zero address.
     * - `feeNumerator` cannot be greater than the fee denominator.
     */
    function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual {
        require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice");
        require(receiver != address(0), "ERC2981: invalid receiver");

        _defaultRoyaltyInfo = RoyaltyInfo(receiver, feeNumerator);
    }

    /**
     * @dev Removes default royalty information.
     */
    function _deleteDefaultRoyalty() internal virtual {
        delete _defaultRoyaltyInfo;
    }

    /**
     * @dev Sets the royalty information for a specific token id, overriding the global default.
     *
     * Requirements:
     *
     * - `receiver` cannot be the zero address.
     * - `feeNumerator` cannot be greater than the fee denominator.
     */
    function _setTokenRoyalty(
        uint256 tokenId,
        address receiver,
        uint96 feeNumerator
    ) internal virtual {
        require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice");
        require(receiver != address(0), "ERC2981: Invalid parameters");

        _tokenRoyaltyInfo[tokenId] = RoyaltyInfo(receiver, feeNumerator);
    }

    /**
     * @dev Resets royalty information for the token id back to the global default.
     */
    function _resetTokenRoyalty(uint256 tokenId) internal virtual {
        delete _tokenRoyaltyInfo[tokenId];
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[48] private __gap;
}

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

pragma solidity ^0.8.0;

import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.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 ERC165Upgradeable is Initializable, IERC165Upgradeable {
    function __ERC165_init() internal onlyInitializing {
    }

    function __ERC165_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165Upgradeable).interfaceId;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

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

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/ERC1967/ERC1967Proxy.sol)

pragma solidity ^0.8.0;

import "../Proxy.sol";
import "./ERC1967Upgrade.sol";

/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 */
contract ERC1967Proxy is Proxy, ERC1967Upgrade {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     *
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializing the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) payable {
        _upgradeToAndCall(_logic, _data, false);
    }

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal view virtual override returns (address impl) {
        return ERC1967Upgrade._getImplementation();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20Upgradeable.sol";
import "./extensions/IERC20MetadataUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable, IERC20MetadataUpgradeable {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing {
        __ERC20_init_unchained(name_, symbol_);
    }

    function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

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

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[45] private __gap;
}

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

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165Upgradeable.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721Upgradeable is IERC165Upgradeable {
    /**
     * @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 IERC721ReceiverUpgradeable {
    /**
     * @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 "../IERC721Upgradeable.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721MetadataUpgradeable is IERC721Upgradeable {
    /**
     * @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 v4.6.0) (interfaces/IERC2981.sol)

pragma solidity ^0.8.0;

import "../utils/introspection/IERC165Upgradeable.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 IERC2981Upgradeable is IERC165Upgradeable {
    /**
     * @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 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 IERC165Upgradeable {
    /**
     * @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 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 v4.6.0) (proxy/Proxy.sol)

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    /**
     * @dev This is a virtual function that should be overridden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback() external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive() external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overridden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/ERC1967/ERC1967Upgrade.sol)

pragma solidity ^0.8.2;

import "../beacon/IBeacon.sol";
import "../../interfaces/draft-IERC1822.sol";
import "../../utils/Address.sol";
import "../../utils/StorageSlot.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract ERC1967Upgrade {
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(
        address newImplementation,
        bytes memory data,
        bool forceCall
    ) internal {
        _upgradeTo(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallUUPS(
        address newImplementation,
        bytes memory data,
        bool forceCall
    ) internal {
        // Upgrades from old implementations will perform a rollback test. This test requires the new
        // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
        // this special case will break upgrade paths from old UUPS implementation to new ones.
        if (StorageSlot.getBooleanSlot(_ROLLBACK_SLOT).value) {
            _setImplementation(newImplementation);
        } else {
            try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
                require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
            } catch {
                revert("ERC1967Upgrade: new implementation is not UUPS");
            }
            _upgradeToAndCall(newImplementation, data, forceCall);
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Emitted when the beacon is upgraded.
     */
    event BeaconUpgraded(address indexed beacon);

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(Address.isContract(newBeacon), "ERC1967: new beacon is not a contract");
        require(
            Address.isContract(IBeacon(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(
        address newBeacon,
        bytes memory data,
        bool forceCall
    ) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20Upgradeable.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20MetadataUpgradeable is IERC20Upgradeable {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

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

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)

pragma solidity ^0.8.0;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)

pragma solidity ^0.8.0;

/**
 * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
 * proxy whose upgrades are fully controlled by the current implementation.
 */
interface IERC1822Proxiable {
    /**
     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
     * address.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy.
     */
    function proxiableUUID() external view returns (bytes32);
}

// 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 (last updated v4.7.0) (utils/StorageSlot.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }
}

{
  "remappings": [
    "@ensdomains/=node_modules/@ensdomains/",
    "@ganache/=node_modules/@ganache/",
    "@openzeppelin/=node_modules/@openzeppelin/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "eth-gas-reporter/=node_modules/eth-gas-reporter/",
    "forge-std/=lib/forge-std/src/",
    "truffle/=node_modules/truffle/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {
    "contracts/impl/D4ACanvas.sol": {
      "D4ACanvas": "0x4815525d8a3765589cfc8986452a6c0192bc0a01"
    },
    "contracts/impl/D4APrice.sol": {
      "D4APrice": "0x04f3b90a9cdd13d7474af8bbdaefbfa6cfa6f52b"
    },
    "contracts/impl/D4AProject.sol": {
      "D4AProject": "0xe000362b382a2fd0c0b5e1dddabcb73154a961fa"
    },
    "contracts/impl/D4AReward.sol": {
      "D4AReward": "0x9db91240165e2a5463d3e53903c646b7f1a7058b"
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

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DesignatedCap[]","name":"designatedMintCaps","type":"tuple[]"}],"name":"MintCapSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"project_id","type":"bytes32"},{"indexed":false,"internalType":"bytes32","name":"canvas_id","type":"bytes32"},{"indexed":false,"internalType":"string","name":"uri","type":"string"}],"name":"NewCanvas","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"project_id","type":"bytes32"},{"indexed":false,"internalType":"string","name":"uri","type":"string"},{"indexed":false,"internalType":"address","name":"fee_pool","type":"address"},{"indexed":false,"internalType":"address","name":"erc20_token","type":"address"},{"indexed":false,"internalType":"address","name":"erc721_token","type":"address"},{"indexed":false,"internalType":"uint256","name":"royalty_fee","type":"uint256"}],"name":"NewProject","type":"event"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"all_canvases","outputs":[{"internalType":"bytes32","name":"project_id","type":"bytes32"},{"internalType":"uint256","name":"nft_token_number","type":"uint256"},{"internalType":"uint256","name":"index","type":"uint256"},{"internalType":"string","name":"canvas_uri","type":"string"},{"internalType":"bool","name":"exist","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"all_prices","outputs":[{"components":[{"internalType":"uint256","name":"round","type":"uint256"},{"internalType":"uint256","name":"value","type":"uint256"}],"internalType":"struct D4APrice.last_price","name":"max_price","type":"tuple"},{"internalType":"uint256","name":"price_rank","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"all_projects","outputs":[{"internalType":"uint256","name":"start_prb","type":"uint256"},{"internalType":"uint256","name":"mintable_rounds","type":"uint256"},{"internalType":"uint256","name":"floor_price_rank","type":"uint256"},{"internalType":"uint256","name":"max_nft_amount","type":"uint256"},{"internalType":"uint256","name":"nft_supply","type":"uint256"},{"internalType":"uint96","name":"royalty_fee","type":"uint96"},{"internalType":"uint256","name":"index","type":"uint256"},{"internalType":"address","name":"erc20_token","type":"address"},{"internalType":"address","name":"erc721_token","type":"address"},{"internalType":"address","name":"fee_pool","type":"address"},{"internalType":"string","name":"project_uri","type":"string"},{"internalType":"uint256","name":"erc20_total_supply","type":"uint256"},{"internalType":"bool","name":"exist","type":"bool"},{"internalType":"uint256","name":"nftPriceMultiplyFactor","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"all_rewards","outputs":[{"internalType":"uint256","name":"to_issue_round_index","type":"uint256"},{"internalType":"uint256","name":"final_issued_round_index","type":"uint256"},{"internalType":"uint256","name":"project_owner_to_claim_round_index","type":"uint256"},{"internalType":"uint256","name":"issued_rounds","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"daoId","type":"bytes32"},{"internalType":"bytes32","name":"canvasId","type":"bytes32"},{"internalType":"bytes32[]","name":"proof","type":"bytes32[]"},{"components":[{"internalType":"string","name":"tokenUri","type":"string"},{"internalType":"uint256","name":"flatPrice","type":"uint256"}],"internalType":"struct D4AProtocol.MintNftInfo[]","name":"mintNftInfos","type":"tuple[]"},{"internalType":"bytes[]","name":"signatures","type":"bytes[]"}],"name":"batchMint","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"canvas_num","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"daoId","type":"bytes32"},{"internalType":"uint256","name":"newNftPriceMultiplyFactor","type":"uint256"}],"name":"changeDaoNftPriceMultiplyFactor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_project_num","type":"uint256"}],"name":"changeProjectNum","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_settings","type":"address"}],"name":"changeSetting","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"canvasId","type":"bytes32"}],"name":"claimCanvasReward","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"canvasId","type":"bytes32"}],"name":"claimCanvasRewardWithETH","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_project_id","type":"bytes32"}],"name":"claimProjectERC20Reward","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_project_id","type":"bytes32"}],"name":"claimProjectERC20RewardWithETH","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"daoId","type":"bytes32"},{"internalType":"string","name":"canvasUri","type":"string"},{"internalType":"bytes32[]","name":"proof","type":"bytes32[]"}],"name":"createCanvas","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_start_prb","type":"uint256"},{"internalType":"uint256","name":"_mintable_rounds","type":"uint256"},{"internalType":"uint256","name":"_floor_price_rank","type":"uint256"},{"internalType":"uint256","name":"_max_nft_rank","type":"uint256"},{"internalType":"uint96","name":"_royalty_fee","type":"uint96"},{"internalType":"string","name":"_project_uri","type":"string"},{"internalType":"uint256","name":"_project_index","type":"uint256"}],"name":"createOwnerProject","outputs":[{"internalType":"bytes32","name":"project_id","type":"bytes32"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_start_prb","type":"uint256"},{"internalType":"uint256","name":"_mintable_rounds","type":"uint256"},{"internalType":"uint256","name":"_floor_price_rank","type":"uint256"},{"internalType":"uint256","name":"_max_nft_rank","type":"uint256"},{"internalType":"uint96","name":"_royalty_fee","type":"uint96"},{"internalType":"string","name":"_project_uri","type":"string"}],"name":"createProject","outputs":[{"internalType":"bytes32","name":"project_id","type":"bytes32"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_project_id","type":"bytes32"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"_to","type":"address"}],"name":"exchangeERC20ToETH","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_canvas_id","type":"bytes32"}],"name":"getCanvasIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_canvas_id","type":"bytes32"}],"name":"getCanvasLastPrice","outputs":[{"internalType":"uint256","name":"round","type":"uint256"},{"internalType":"uint256","name":"price","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_canvas_id","type":"bytes32"}],"name":"getCanvasNFTCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_canvas_id","type":"bytes32"}],"name":"getCanvasNextPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_canvas_id","type":"bytes32"}],"name":"getCanvasProject","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_canvas_id","type":"bytes32"}],"name":"getCanvasURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_project_id","type":"bytes32"},{"internalType":"uint256","name":"_token_id","type":"uint256"}],"name":"getNFTTokenCanvas","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_project_id","type":"bytes32"},{"internalType":"uint256","name":"_index","type":"uint256"}],"name":"getProjectCanvasAt","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_project_id","type":"bytes32"}],"name":"getProjectCanvasCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_project_id","type":"bytes32"}],"name":"getProjectFloorPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_project_id","type":"bytes32"}],"name":"getProjectInfo","outputs":[{"internalType":"uint256","name":"start_prb","type":"uint256"},{"internalType":"uint256","name":"mintable_rounds","type":"uint256"},{"internalType":"uint256","name":"floor_price_rank","type":"uint256"},{"internalType":"uint256","name":"max_nft_amount","type":"uint256"},{"internalType":"address","name":"fee_pool","type":"address"},{"internalType":"uint96","name":"royalty_fee","type":"uint96"},{"internalType":"uint256","name":"index","type":"uint256"},{"internalType":"string","name":"uri","type":"string"},{"internalType":"uint256","name":"erc20_total_supply","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_project_id","type":"bytes32"}],"name":"getProjectTokens","outputs":[{"internalType":"address","name":"erc20_token","type":"address"},{"internalType":"address","name":"erc721_token","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_canvas_id","type":"bytes32"},{"internalType":"uint256","name":"_index","type":"uint256"}],"name":"getTokenIDAt","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_settings","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"daoId","type":"bytes32"},{"internalType":"bytes32","name":"_canvas_id","type":"bytes32"},{"internalType":"string","name":"_token_uri","type":"string"},{"internalType":"bytes32[]","name":"proof","type":"bytes32[]"},{"internalType":"uint256","name":"_flat_price","type":"uint256"},{"internalType":"bytes","name":"_signature","type":"bytes"}],"name":"mintNFT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"nftMintTrackers","outputs":[{"internalType":"uint32","name":"mintCap","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"project_bitmap","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"project_num","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"round_2_total_eth","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"daoId","type":"bytes32"},{"internalType":"uint32","name":"_mintCap","type":"uint32"},{"components":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint32","name":"cap","type":"uint32"}],"internalType":"struct DesignatedCap[]","name":"designatedMintCaps","type":"tuple[]"},{"components":[{"internalType":"bytes32","name":"minterMerkleRoot","type":"bytes32"},{"internalType":"address[]","name":"minterNFTHolderPasses","type":"address[]"},{"internalType":"bytes32","name":"canvasCreatorMerkleRoot","type":"bytes32"},{"internalType":"address[]","name":"canvasCreatorNFTHolderPasses","type":"address[]"}],"internalType":"struct IPermissionControl.Whitelist","name":"whitelist","type":"tuple"},{"components":[{"internalType":"address[]","name":"minterAccounts","type":"address[]"},{"internalType":"address[]","name":"canvasCreatorAccounts","type":"address[]"}],"internalType":"struct IPermissionControl.Blacklist","name":"blacklist","type":"tuple"},{"components":[{"internalType":"address[]","name":"minterAccounts","type":"address[]"},{"internalType":"address[]","name":"canvasCreatorAccounts","type":"address[]"}],"internalType":"struct IPermissionControl.Blacklist","name":"unblacklist","type":"tuple"}],"name":"setMintCapAndPermission","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"settings","outputs":[{"internalType":"contract ID4ASetting","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"tokenid_2_canvas","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"uri_exists","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]

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