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// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "./BaseRegistrarImplementation.sol";
import "./StringUtils.sol";
import {ReferralHub} from "../referral/ReferralHub.sol";
import {ReferralVerifier} from "../referral/ReferralVerifier.sol";
import {SidGiftCardLedger} from "../giftcard/SidGiftCardLedger.sol";
import {ISidPriceOracle} from "../price-oracle/ISidPriceOracle.sol";
import {IRegistrarController} from "./IRegistrarController.sol";
import {ReverseRegistrar} from "../registry/ReverseRegistrar.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import {ReferralInfo} from "../struct/SidStruct.sol";
import {RegInfo} from "../struct/SidStruct.sol";
import {Resolver} from "../resolvers/Resolver.sol";

/**
 * @dev Registrar with giftcard and referral support
 *
 */
contract RegistrarController is IRegistrarController, Ownable, ReentrancyGuard {
    using StringUtils for *;

    uint public constant MIN_REGISTRATION_DURATION = 365 days;
    

    BaseRegistrarImplementation base;
    SidGiftCardLedger giftCardLedger;
    ISidPriceOracle prices;
    ReferralHub referralHub;
    ReferralVerifier referralVerifier;
    ReverseRegistrar reverseRegistrar;
    

    //fund controller
    address public treasuryManager;

    uint256 public version;

    string public subfix = ".bnb";

    modifier onlyTreasuryManager() {
        require(msg.sender == treasuryManager, "Only treasury manager can withdraw");
        _;
    }

    constructor(
        BaseRegistrarImplementation _base,
        ISidPriceOracle _prices,
        SidGiftCardLedger _giftCardLedger,
        ReferralHub _referralHub,
        ReferralVerifier _referralVerifier,
        ReverseRegistrar _reverseRegistrar,
        address _treasuryManager,
        uint256 _version
    ) {
        base = _base;
        prices = _prices;
        giftCardLedger = _giftCardLedger;
        referralHub = _referralHub;
        referralVerifier = _referralVerifier;
        reverseRegistrar = _reverseRegistrar;
        treasuryManager = _treasuryManager;
        version = _version;
    }

    function rentPrice(string calldata name, uint256 duration) public view returns (ISidPriceOracle.Price memory price) {
        bytes32 label = keccak256(bytes(name));
        price = prices.domainPriceInBNB(name, base.nameExpires(uint256(label)), duration);
    }

    function rentPriceWithPoint(string calldata name, uint256 duration, address registerAddress) public view returns (ISidPriceOracle.Price memory price) {
        bytes32 label = keccak256(bytes(name));
        price = prices.domainPriceWithPointRedemptionInBNB(name, base.nameExpires(uint256(label)), duration, registerAddress);
    }

    function valid(string calldata name) public pure returns (bool) {
        // check unicode rune count, if rune count is >=3, byte length must be >=3.
        if (name.strlen() < 3) {
            return false;
        }
        bytes memory nb = bytes(name);
        // zero width for /u200b /u200c /u200d and U+FEFF
        for (uint256 i; i < nb.length - 2; i++) {
            if (bytes1(nb[i]) == 0xe2 && bytes1(nb[i + 1]) == 0x80) {
                if (bytes1(nb[i + 2]) == 0x8b || bytes1(nb[i + 2]) == 0x8c || bytes1(nb[i + 2]) == 0x8d) {
                    return false;
                }
            } else if (bytes1(nb[i]) == 0xef) {
                if (bytes1(nb[i + 1]) == 0xbb && bytes1(nb[i + 2]) == 0xbf) return false;
            }
        }
        return true;
    }

    function available(string calldata name) public view returns (bool) {
        bytes32 label = keccak256(bytes(name));
        return valid(name) && base.available(uint256(label));
    }

    // because this function returns fund based on msg.value
    // it MUST be an external function to avoid accidental call that
    // returns incorrect amount, e.g., bulk register.
    function register(string calldata name, address owner, uint duration) external payable {
        uint256 cost = _registerWithConfigAndPoint(name, RegInfo(owner, duration, address(0), false, false, msg.value), ReferralInfo(address(0), bytes32(0), 0, 0, bytes("")));
        // Refund any extra payment
        if (msg.value > cost) {
            (bool sent, ) = msg.sender.call{value: msg.value - cost}("");
            require(sent, "Failed to send Ether");
        }
    }

    // because this function returns fund based on msg.value
    // it MUST be an external function to avoid accidental call that
    // returns incorrect amount, e.g., bulk register.
    function registerWithConfigAndPoint(string calldata name, address owner, uint duration, address resolver, bool isUsePoints, bool isSetPrimaryName, ReferralInfo memory referralInfo) external payable {
        uint256 cost = _registerWithConfigAndPoint(name, RegInfo(owner, duration, resolver, isUsePoints, isSetPrimaryName, msg.value), referralInfo);
        // Refund any extra payment
        if (msg.value > cost) {
            (bool sent, ) = msg.sender.call{value: msg.value - cost}("");
            require(sent, "Failed to send Ether");
        }
    }
    
    function _registerWithConfigAndPoint(string calldata name, RegInfo memory regInfo, ReferralInfo memory referralInfo) internal nonReentrant returns (uint256 cost) {
        cost = _cost(name, regInfo.duration, regInfo.isUsePoints);

        bytes32 label = keccak256(bytes(name));
        uint256 tokenId = uint256(label);

        uint expires;
        if (regInfo.resolver != address(0)) {
            // Set this contract as the (temporary) owner, giving it
            // permission to set up the resolver.
            expires = base.register(tokenId, address(this), regInfo.duration);

            // The nodehash of this label
            bytes32 nodehash = keccak256(abi.encodePacked(base.baseNode(), label));

            // Set the resolver
            base.sid().setResolver(nodehash, regInfo.resolver);

            Resolver(regInfo.resolver).setAddr(nodehash, regInfo.owner);

            // Now transfer full ownership to the expeceted owner
            base.reclaim(tokenId, regInfo.owner);
            base.transferFrom(address(this), regInfo.owner, tokenId);
        } else {
            expires = base.register(tokenId, regInfo.owner, regInfo.duration);
        }

        emit NameRegistered(name, label, regInfo.owner, cost, expires);

        // Check if it is eligible for referral program
        if (referralInfo.referrerAddress != address(0)) {
            cost = _handleReferral(cost, referralInfo.referrerAddress, referralInfo.referrerNodehash, referralInfo.referralAmount, referralInfo.signedAt, referralInfo.signature);
        }
        // Check if should set reverse record
        if (regInfo.isSetPrimaryName) {
            _setReverseRecord(name, regInfo.owner);
        }
        return cost;
    }

    function _handleReferral(uint cost, address referrerAddress, bytes32 referrerNodehash, uint256 referralAmount, uint256 signedAt, bytes memory signature) internal returns (uint) {
        require(referralVerifier.verifyReferral(referrerAddress, referrerNodehash, referralAmount, signedAt, signature), "Invalid referral signature");
        uint256 referrerFee = 0;
        uint256 refereeFee = 0;
        if (referralHub.isPartner(referrerNodehash)) {
            (referrerFee, refereeFee) = referralHub.getReferralCommisionFee(cost, referrerNodehash);
        } else {
            (referrerFee, refereeFee) = referralVerifier.getReferralCommisionFee(cost, referralAmount);
        }
        referralHub.addNewReferralRecord(referrerNodehash);
        if (referrerFee > 0) {
            referralHub.deposit{value: referrerFee}(referrerAddress);
        }
        return cost - refereeFee;
    }

    

    // because this function returns fund based on msg.value
    // it MUST be an external function to avoid accidental call that
    // returns incorrect amount, e.g., bulk register.
    function renew(string calldata name, uint duration) external payable {
        uint256 cost = _renewWithPoint(name, duration, false, msg.value);
        // Refund any extra payment
        if (msg.value > cost) {
            (bool sent, ) = msg.sender.call{value: msg.value - cost}("");
            require(sent, "Failed to send Ether");
        }
    }

    // because this function returns fund based on msg.value
    // it MUST be an external function to avoid accidental call that
    // returns incorrect amount, e.g., bulk register.
    function renewWithPoint(string calldata name, uint duration, bool isUsePoints) external payable {
        uint256 cost = _renewWithPoint(name, duration, isUsePoints, msg.value);
        // Refund any extra payment
        if (msg.value > cost) {
            (bool sent, ) = msg.sender.call{value: msg.value - cost}("");
            require(sent, "Failed to send Ether");
        }
    }

    function _renewWithPoint(string calldata name, uint duration, bool isUsePoints, uint256 paid) internal nonReentrant returns (uint256 cost) {
        ISidPriceOracle.Price memory price;
        if (isUsePoints) {
            price = rentPriceWithPoint(name, duration, msg.sender);
            //deduct points from gift card ledger
            giftCardLedger.deduct(msg.sender, price.usedPoint);
        } else {
            price = rentPrice(name, duration);
        }
        cost = (price.base + price.premium);
        require(paid >= cost);
        bytes32 label = keccak256(bytes(name));
        uint expires = base.renew(uint256(label), duration);
        emit NameRenewed(name, label, cost, expires);
        return cost;
    }

    function withdraw() public onlyTreasuryManager nonReentrant {
        (bool sent, ) = treasuryManager.call{value: address(this).balance}("");
        require(sent, "Failed to send Ether");
    }

    function _cost(string calldata name, uint duration, bool usePoints) internal returns (uint256) {
        require(available(name));
        ISidPriceOracle.Price memory price;
        if (usePoints) {
            uint256 senderBalance = giftCardLedger.balanceOf(msg.sender);
            price = rentPriceWithPoint(name, duration, msg.sender);
            // deduct points from gift card ledger
            giftCardLedger.deduct(msg.sender, price.usedPoint);
            assert(senderBalance == 0 || senderBalance > giftCardLedger.balanceOf(msg.sender));
        } else {
            price = rentPrice(name, duration);
        }
        uint cost = (price.base + price.premium);
        require(duration >= MIN_REGISTRATION_DURATION);
        require(msg.value >= cost);
        return cost;
    }

    function bulkRentPrice(string[] calldata names, uint256 duration) public view returns (uint256 total) {
        for (uint256 i = 0; i < names.length; i++) {
            ISidPriceOracle.Price memory price = rentPrice(names[i], duration);
            total += (price.base + price.premium);
        }
    }

    function bulkRegister(string[] calldata names, address owner, uint duration, address resolver, bool isUseGiftCard, bool isSetPrimaryName, ReferralInfo memory referralInfo) external payable {
        uint256 unspent = msg.value;
        for (uint256 i = 0; i < names.length; i++) {
            uint256 cost = _registerWithConfigAndPoint(names[i], RegInfo(owner, duration, resolver, isUseGiftCard, isSetPrimaryName, unspent), referralInfo);
            unspent -= cost;
        }
        // Refund any extra payment
        if (unspent > 0) {
            (bool sent, ) = msg.sender.call{value: unspent}("");
            require(sent, "Failed to send Ether");
        }
    }

    function bulkRenew(string[] calldata names, uint duration, bool isUsePoints) external payable {
        uint256 unspent = msg.value;
        for (uint256 i = 0; i < names.length; i++) {
            uint256 cost = _renewWithPoint(names[i], duration, isUsePoints, unspent);
            unspent -= cost;
        }
        // Refund any extra payment
        if (unspent > 0) {
            (bool sent, ) = msg.sender.call{value: unspent}("");
            require(sent, "Failed to send Ether");
        }
    }

    function setPriceOracle(ISidPriceOracle _prices) public onlyOwner {
        prices = _prices;
        emit NewPriceOracle(address(prices));
    }

    function setTreasuryManager(address _treasuryManager) public onlyOwner {
        require(_treasuryManager != address(0));
        treasuryManager = _treasuryManager;
        emit NewTreasuryManager(_treasuryManager);
    }

    function _setReverseRecord(string memory name, address owner) internal {
        address defaultResolver = address(reverseRegistrar.defaultResolver());
        reverseRegistrar.setNameForAddr(owner, owner, defaultResolver, string.concat(name, subfix));
    }
     
}

pragma solidity >=0.8.4;

library StringUtils {
    /**
     * @dev Returns the length of a given string
     *
     * @param s The string to measure the length of
     * @return The length of the input string
     */
    function strlen(string memory s) internal pure returns (uint) {
        uint len;
        uint i = 0;
        uint bytelength = bytes(s).length;
        for(len = 0; i < bytelength; len++) {
            bytes1 b = bytes(s)[i];
            if(b < 0x80) {
                i += 1;
            } else if (b < 0xE0) {
                i += 2;
            } else if (b < 0xF0) {
                i += 3;
            } else if (b < 0xF8) {
                i += 4;
            } else if (b < 0xFC) {
                i += 5;
            } else {
                i += 6;
            }
        }
        return len;
    }
}

pragma solidity >=0.8.4;

import "../registry/SID.sol";
import "./IBaseRegistrar.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Strings.sol";

contract BaseRegistrarImplementation is ERC721, IERC721Enumerable, IBaseRegistrar, Ownable {
    // A map of expiry times
    mapping(uint256 => uint) expiries;
    // The SID registry
    SID public sid;
    // The namehash of the TLD this registrar owns (eg, .eth)
    bytes32 public baseNode;
    // A map of addresses that are authorised to register and renew names.
    mapping(address => bool) public controllers;
    uint256 public constant GRACE_PERIOD = 90 days;
    bytes4 private constant INTERFACE_META_ID = bytes4(keccak256("supportsInterface(bytes4)"));
    bytes4 private constant ERC721_ID =
        bytes4(
            keccak256("balanceOf(address)") ^
                keccak256("ownerOf(uint256)") ^
                keccak256("approve(address,uint256)") ^
                keccak256("getApproved(uint256)") ^
                keccak256("setApprovalForAll(address,bool)") ^
                keccak256("isApprovedForAll(address,address)") ^
                keccak256("transferFrom(address,address,uint256)") ^
                keccak256("safeTransferFrom(address,address,uint256)") ^
                keccak256("safeTransferFrom(address,address,uint256,bytes)")
        );
    bytes4 private constant RECLAIM_ID = bytes4(keccak256("reclaim(uint256,address)"));
    string public baseUri;
    string constant INVALID_INDEX = "005007";
    uint256[] internal tokens;
    mapping(uint256 => uint256) internal idToIndex;
    mapping(address => uint256[]) internal ownerToIds;

    /**
     * v2.1.3 version of _isApprovedOrOwner which calls ownerOf(tokenId) and takes grace period into consideration instead of ERC721.ownerOf(tokenId);
     * https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v2.1.3/contracts/token/ERC721/ERC721.sol#L187
     * @dev Returns whether the given spender can transfer a given token ID
     * @param spender address of the spender to query
     * @param tokenId uint256 ID of the token to be transferred
     * @return bool whether the msg.sender is approved for the given token ID,
     *    is an operator of the owner, or is the owner of the token
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view override returns (bool) {
        address owner = ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
    }

    constructor(SID _sid, bytes32 _baseNode) ERC721("SPACE ID", "SID") {
        sid = _sid;
        baseNode = _baseNode;
    }

    modifier live() {
        require(sid.owner(baseNode) == address(this));
        _;
    }

    modifier onlyController() {
        require(controllers[msg.sender]);
        _;
    }

    function totalSupply() external view override returns (uint256) {
        return tokens.length;
    }

    function tokenByIndex(uint256 _index) external view override returns (uint256) {
        require(_index < tokens.length, INVALID_INDEX);
        return tokens[_index];
    }

    function tokenOfOwnerByIndex(address _owner, uint256 _index) external view override returns (uint256) {
        require(_index < ownerToIds[_owner].length, INVALID_INDEX);
        return ownerToIds[_owner][_index];
    }

    function _mint(address _to, uint256 _tokenId) internal virtual override {
        super._mint(_to, _tokenId);
        tokens.push(_tokenId);
        idToIndex[_tokenId] = tokens.length - 1;
    }

    function _burn(uint256 _tokenId) internal virtual override {
        super._burn(_tokenId);

        uint256 tokenIndex = idToIndex[_tokenId];
        uint256 lastTokenIndex = tokens.length - 1;
        uint256 lastToken = tokens[lastTokenIndex];

        tokens[tokenIndex] = lastToken;

        tokens.pop();
        // This wastes gas if you are burning the last token but saves a little gas if you are not.
        idToIndex[lastToken] = tokenIndex;
        idToIndex[_tokenId] = 0;
    }

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

        _transfer(from, to, tokenId);
        sid.setSubnodeOwner(baseNode, bytes32(tokenId), to);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public override(ERC721, IERC721) {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not approved or owner");
        _safeTransfer(from, to, tokenId, _data);
        sid.setSubnodeOwner(baseNode, bytes32(tokenId), to);
    }

    /**
     * @dev Gets the owner of the specified token ID. Names become unowned
     *      when their registration expires.
     * @param tokenId uint256 ID of the token to query the owner of
     * @return address currently marked as the owner of the given token ID
     */
    function ownerOf(uint256 tokenId) public view override(IERC721, ERC721) returns (address) {
        require(expiries[tokenId] > block.timestamp);
        return super.ownerOf(tokenId);
    }

    // Authorises a controller, who can register and renew domains.
    function addController(address controller) external override onlyOwner {
        require(controller != address(0), "address can not be zero!");
        controllers[controller] = true;
        emit ControllerAdded(controller);
    }

    // Revoke controller permission for an address.
    function removeController(address controller) external override onlyOwner {
        require(controller != address(0), "address can not be zero!");
        controllers[controller] = false;
        emit ControllerRemoved(controller);
    }

    // Set the resolver for the TLD this registrar manages.
    function setResolver(address resolver) external override onlyOwner {
        sid.setResolver(baseNode, resolver);
    }

    // Returns the expiration timestamp of the specified id.
    function nameExpires(uint256 id) public view override returns (uint) {
        return expiries[id];
    }

    // Returns true iff the specified name is available for registration.
    function available(uint256 id) public view override returns (bool) {
        return expiries[id] + GRACE_PERIOD < block.timestamp;
    }

    /**
     * @dev Register a name.
     * @param id The token ID (keccak256 of the label).
     * @param owner The address that should own the registration.
     * @param duration Duration in seconds for the registration.
     */
    function register(
        uint256 id,
        address owner,
        uint duration
    ) external override returns (uint) {
        return _register(id, owner, duration, true);
    }

    /**
     * @dev Register a name, without modifying the registry.
     * @param id The token ID (keccak256 of the label).
     * @param owner The address that should own the registration.
     * @param duration Duration in seconds for the registration.
     */
    function registerOnly(
        uint256 id,
        address owner,
        uint duration
    ) external returns (uint) {
        return _register(id, owner, duration, false);
    }

    function _register(
        uint256 id,
        address owner,
        uint duration,
        bool updateRegistry
    ) internal live onlyController returns (uint) {
        require(available(id));
        require(block.timestamp + duration + GRACE_PERIOD > block.timestamp + GRACE_PERIOD); // Prevent future overflow

        expiries[id] = block.timestamp + duration;
        if (_exists(id)) {
            // Name was previously owned, and expired
            _burn(id);
        }
        _mint(owner, id);
        if (updateRegistry) {
            sid.setSubnodeOwner(baseNode, bytes32(id), owner);
        }

        emit NameRegistered(id, owner, block.timestamp + duration);

        return block.timestamp + duration;
    }

    function renew(uint256 id, uint duration) external override live onlyController returns (uint) {
        require(expiries[id] + GRACE_PERIOD >= block.timestamp); // Name must be registered here or in grace period
        require(expiries[id] + duration + GRACE_PERIOD > duration + GRACE_PERIOD); // Prevent future overflow
        expiries[id] += duration;
        emit NameRenewed(id, expiries[id]);
        return expiries[id];
    }

    /**
     * @dev Reclaim ownership of a name in SID, if you own it in the registrar.
     */
    function reclaim(uint256 id, address owner) external override live {
        require(_isApprovedOrOwner(msg.sender, id));
        sid.setSubnodeOwner(baseNode, bytes32(id), owner);
    }

    function supportsInterface(bytes4 interfaceID) public view override(ERC721, IERC165) returns (bool) {
        return interfaceID == INTERFACE_META_ID || interfaceID == ERC721_ID || interfaceID == RECLAIM_ID;
    }

    /**
     * PRIVILEGED MODULE FUNCTION. Sets a new baseURI for all token types.
     */
    function setURI(string memory newURI) external onlyOwner {
        baseUri = newURI;
    }

    function tokenURI(uint256 tokenId) public view override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

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

pragma solidity >=0.8.4;

import "./ReferralVerifier.sol";
import {EIP712} from "@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {Pausable} from "@openzeppelin/contracts/security/Pausable.sol";
import {ECDSA} from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import {ReferralHub} from "./ReferralHub.sol";

contract ReferralVerifier is EIP712, Ownable, Pausable {
    address public spaceid_signer;
    uint256 public sigValidDuration;
    ReferralHub immutable referralHub;

    bytes32 private constant _REFERRAL_TYPEHASH = keccak256("Referral(address referrerAddress,bytes32 nodehash,uint256 referralCount,uint256 signedAt)");

    constructor(address _spaceid_signer, ReferralHub _referral_hub) EIP712("ReferralVerifier", "1.0.0") {
        spaceid_signer = _spaceid_signer;
        referralHub = _referral_hub;
        sigValidDuration = 5 minutes;
    }

    function setSpaceIdSigner(address _spaceid_signer) external onlyOwner {
        spaceid_signer = _spaceid_signer;
    }

    function setSigValidDuration(uint256 duration) external onlyOwner {
        sigValidDuration = duration;
    }

    function pause() external onlyOwner {
        _pause();
    }

    function unpause() external onlyOwner {
        _unpause();
    }

    function _hash(address referrerAddress, bytes32 nodehash, uint256 referralCount, uint256 signedAt) public view returns (bytes32) {
        return _hashTypedDataV4(keccak256(abi.encode(_REFERRAL_TYPEHASH, referrerAddress, nodehash, referralCount, signedAt)));
    }

    function verifyReferral(address referrerAddress, bytes32 nodehash, uint256 referralCount, uint256 signedAt, bytes calldata signature) external view whenNotPaused returns (bool) {
        return block.timestamp < signedAt + sigValidDuration && _verifySignature(_hash(referrerAddress, nodehash, referralCount, signedAt), signature);
    }

    function getReferralCommisionFee(uint256 price, uint256 referralCount) external view returns (uint256, uint256) {
        uint256 curLevel = 1;
        (uint256 minimumReferralCount, uint256 referrerRate, uint256 refereeRate) = referralHub.comissionCharts(curLevel);
        while (referralCount > minimumReferralCount && curLevel <= 10) {
            (, referrerRate, refereeRate) = referralHub.comissionCharts(curLevel);
            (minimumReferralCount, , ) = referralHub.comissionCharts(++curLevel);
        }
        uint256 referrerFee = (price * referrerRate) / 100;
        uint256 refereeFee = (price * refereeRate) / 100;
        return (referrerFee, refereeFee);
    }

    function _verifySignature(bytes32 hash, bytes calldata signature) private view returns (bool) {
        return ECDSA.recover(hash, signature) == spaceid_signer;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;
import "./IReferralHub.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "../registry/SID.sol";
import "../resolvers/profiles/AddrResolver.sol";
import "../resolvers/profiles/NameResolver.sol";
import "../registry/IReverseRegistrar.sol";

contract ReferralHub is IReferralHub, Ownable, ReentrancyGuard {
    // ReferralHub controllers that can update referral count and related states.
    mapping(address => bool) public controllers;

    // Commission configuration
    struct Comission {
        // The number of minimum referrals that is required for the rate.
        uint256 minimumReferralCount;
        // Percentage of registration fee that will be deposited to referrer.
        uint256 referrer;
        // Percentage of registration fee that will be discounted to referee.
        uint256 referee;
    }
    //map comission chart to a level
    mapping(uint256 => Comission) public comissionCharts;
    // map from refferral domain name nodehash to the number of referrals.
    mapping(bytes32 => uint256) public referralCount;
    // map address to the amount of bonus.
    mapping(address => uint256) public referralBalance;
    // Map partner's domain's nodehash to customized commission rate.
    mapping(bytes32 => Comission) public partnerComissionCharts;

    bytes32 constant ADDR_REVERSE_NODE = 0x91d1777781884d03a6757a803996e38de2a42967fb37eeaca72729271025a9e2;
    bytes32 constant lookup = 0x3031323334353637383961626364656600000000000000000000000000000000;

    SID immutable sid;

    constructor(SID _sid) {
        sid = _sid;
        comissionCharts[1] = Comission(0, 5, 0);
        comissionCharts[2] = Comission(30, 8, 0);
        comissionCharts[3] = Comission(100, 11, 0);
        comissionCharts[4] = Comission(600, 15, 0);
        comissionCharts[5] = Comission(100000000, 15, 0);
        comissionCharts[6] = Comission(100000000, 15, 0);
        comissionCharts[7] = Comission(100000000, 15, 0);
        comissionCharts[8] = Comission(100000000, 15, 0);
        comissionCharts[9] = Comission(100000000, 15, 0);
        comissionCharts[10] = Comission(100000000, 15, 0);
    }

    modifier onlyController() {
        require(controllers[msg.sender], "Not a authorized controller");
        _;
    }

    modifier validLevel(uint256 _level) {
        require(_level >= 1 && _level <= 10, "Invalid level");
        _;
    }

    function getNodehash(string calldata name, string calldata tld) public pure returns (bytes32) {
        bytes32 nameHash = keccak256(bytes(name));
        bytes32 tldHash = keccak256(abi.encodePacked(bytes32(0), keccak256(bytes(tld))));
        return keccak256(abi.encodePacked(tldHash, nameHash));
    }

    function getReverseNodehash(address addr) public pure returns (bytes32) {
        return keccak256(abi.encodePacked(ADDR_REVERSE_NODE, sha3HexAddress(addr)));
    }

    /**
     * @dev An optimised function to compute the sha3 of the lower-case
     *      hexadecimal representation of an Ethereum address.
     * @param addr The address to hash
     * @return ret The SHA3 hash of the lower-case hexadecimal encoding of the
     *         input address.
     */
    function sha3HexAddress(address addr) private pure returns (bytes32 ret) {
        assembly {
            for {
                let i := 40
            } gt(i, 0) {

            } {
                i := sub(i, 1)
                mstore8(i, byte(and(addr, 0xf), lookup))
                addr := div(addr, 0x10)
                i := sub(i, 1)
                mstore8(i, byte(and(addr, 0xf), lookup))
                addr := div(addr, 0x10)
            }
            ret := keccak256(0, 40)
        }
    }

    function isReferralEligible(bytes32 nodeHash) external view override returns (bool, address) {
        address resolverAddress = sid.resolver(nodeHash);
        if (resolverAddress == address(0)) {
            return (false, address(0));
        }
        AddrResolver resolver = AddrResolver(resolverAddress);
        address resolvedAddress = resolver.addr(nodeHash);
        bytes32 reverseNodeHash = getReverseNodehash(resolvedAddress);
        address reverseResolverAddress = sid.resolver(reverseNodeHash);

        if (reverseResolverAddress == address(0)) {
            return (false, address(0));
        }

        return (true, resolvedAddress);
    }

    function isPartner(bytes32 nodeHash) public view returns (bool) {
        return partnerComissionCharts[nodeHash].referrer > 0 || partnerComissionCharts[nodeHash].referee > 0;
    }

    function getReferralCommisionFee(uint256 price, bytes32 nodeHash) public view returns (uint256, uint256) {
        uint256 referrerRate = 0;
        uint256 refereeRate = 0;
        uint256 level = 1;
        if (isPartner(nodeHash)) {
            referrerRate = partnerComissionCharts[nodeHash].referrer;
            refereeRate = partnerComissionCharts[nodeHash].referee;
        } else {
            (level, referrerRate, refereeRate) = _getComissionChart(referralCount[nodeHash]);
        }
        uint256 referrerFee = (price * referrerRate) / 100;
        uint256 refereeFee = (price * refereeRate) / 100;
        return (referrerFee, refereeFee);
    }

    function setPartnerComissionChart(
        string calldata name,
        string calldata tld,
        uint256 minimumReferralCount,
        uint256 referrerRate,
        uint256 refereeRate
    ) external onlyOwner {
        bytes32 nodeHash = getNodehash(name, tld);
        partnerComissionCharts[nodeHash] = Comission(minimumReferralCount, referrerRate, refereeRate);
    }

    function addNewReferralRecord(bytes32 referrerNodeHash) external override onlyController {
        referralCount[referrerNodeHash] += 1;
        emit NewReferralRecord(referrerNodeHash);
    }

    function _getReferralCount(bytes32 referrerNodeHash) internal view returns (uint256) {
        return referralCount[referrerNodeHash];
    }

    function _getComissionChart(uint256 referralAmount)
        internal
        view
        returns (
            uint256,
            uint256,
            uint256
        )
    {
        uint256 curLevel = 1;
        uint256 referrerRate;
        uint256 refereeRate;
        uint256 level;
        while (referralAmount >= comissionCharts[curLevel].minimumReferralCount && curLevel <= 10)  {
            referrerRate = comissionCharts[curLevel].referrer;
            refereeRate = comissionCharts[curLevel].referee;
            level = curLevel;
            curLevel += 1;
        }
        return (level, referrerRate, refereeRate);
    }

    function getReferralDetails(bytes32 referrerNodeHash)
        external
        view
        override
        returns (
            uint256,
            uint256,
            uint256,
            uint256
        )
    {
        uint256 referralNum = _getReferralCount(referrerNodeHash);
        (uint256 level, uint256 referrerRate, uint256 refereeRate) = _getComissionChart(referralNum);
        return (referralNum, level, referrerRate, refereeRate);
    }

    function setComissionChart(
        uint256 level,
        uint256 minimumAmount,
        uint256 referrerRate,
        uint256 refereeRate
    ) external onlyOwner validLevel(level) {
        comissionCharts[level] = Comission(minimumAmount, referrerRate, refereeRate);
    }

    function deposit(address _referrer) external payable onlyController{
        require(msg.value > 0, "Invalid amount");
        referralBalance[_referrer] += msg.value;
        emit depositRecord(_referrer, msg.value);
    }

    function withdraw() external nonReentrant{
        uint256 amount = referralBalance[msg.sender];
        require(amount > 0, "Insufficient balance");
        referralBalance[msg.sender] = 0;
        payable(msg.sender).transfer(amount);
        emit withdrawRecord(msg.sender, amount);
    }

    function addController(address controller) external override onlyOwner {
        controllers[controller] = true;
        emit ControllerAdded(controller);
    }

    function removeController(address controller) external override onlyOwner {
        controllers[controller] = false;
        emit ControllerRemoved(controller);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface ISidPriceOracle {
    struct Price {
        uint256 base;
        uint256 premium;
        uint256 usedPoint;
    }

    function giftCardPriceInBNB(uint256[] memory ids, uint256[] memory amounts) external view returns (Price calldata);

    function domainPriceInBNB(
        string calldata name,
        uint256 expires,
        uint256 duration
    ) external view returns (Price calldata);

    function domainPriceWithPointRedemptionInBNB(
        string calldata name,
        uint256 expires,
        uint duration,
        address owner
    ) external view returns (Price calldata);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;
import "./SidGiftCardRegistrar.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./SidGiftCardVoucher.sol";

contract SidGiftCardLedger is Ownable {
    SidGiftCardRegistrar public registrar;
    SidGiftCardVoucher public voucher;
    mapping(address => uint256) public balances;
    mapping(address => bool) public controllers;

    event ControllerAdded(address indexed controller);
    event ControllerRemoved(address indexed controller);

    constructor(SidGiftCardRegistrar _registrar, SidGiftCardVoucher _voucher) {
        registrar = _registrar;
        voucher = _voucher;
    }

    modifier onlyController() {
        require(controllers[msg.sender], "Not a authorized controller");
        _;
    }

    function balanceOf(address account) public view returns (uint256) {
        return balances[account];
    }

    function redeem(uint256[] calldata ids, uint256[] calldata amounts) external {
        registrar.batchBurn(msg.sender, ids, amounts);
        uint256 totalValue = voucher.totalValue(ids, amounts);
        balances[msg.sender] += totalValue;
    }

    function deduct(address account, uint256 amount) public onlyController {
        uint256 fromBalance = balances[account];
        require(fromBalance >= amount, "Insufficient balance");
        balances[account] = fromBalance - amount;
    }

    function addController(address controller) external onlyOwner {
        require(controller != address(0), "address can not be zero!");
        controllers[controller] = true;
        emit ControllerAdded(controller);
    }

    function removeController(address controller) external onlyOwner {
        require(controller != address(0), "address can not be zero!");
        controllers[controller] = false;
        emit ControllerRemoved(controller);
    }
}

pragma solidity >=0.8.4;

import "./SID.sol";
import "./IReverseRegistrar.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "../root/Controllable.sol";

abstract contract NameResolver {
    function setName(bytes32 node, string memory name) public virtual;
}

bytes32 constant lookup = 0x3031323334353637383961626364656600000000000000000000000000000000;

bytes32 constant ADDR_REVERSE_NODE = 0x91d1777781884d03a6757a803996e38de2a42967fb37eeaca72729271025a9e2;

// namehash('addr.reverse')

contract ReverseRegistrar is Ownable, Controllable, IReverseRegistrar {
    SID public immutable sid;
    NameResolver public defaultResolver;

    event ReverseClaimed(address indexed addr, bytes32 indexed node);

    /**
     * @dev Constructor
     * @param sidAddr The address of the SID registry.
     */
    constructor(SID sidAddr) {
        sid = sidAddr;

        // Assign ownership of the reverse record to our deployer
        ReverseRegistrar oldRegistrar = ReverseRegistrar(
            sidAddr.owner(ADDR_REVERSE_NODE)
        );
        if (address(oldRegistrar) != address(0x0)) {
            oldRegistrar.claim(msg.sender);
        }
    }

    modifier authorised(address addr) {
        require(
            addr == msg.sender ||
                controllers[msg.sender] ||
                sid.isApprovedForAll(addr, msg.sender) ||
                ownsContract(addr),
            "ReverseRegistrar: Caller is not a controller or authorised by address or the address itself"
        );
        _;
    }

    function setDefaultResolver(address resolver) public override onlyOwner {
        require(
            address(resolver) != address(0),
            "ReverseRegistrar: Resolver address must not be 0"
        );
        defaultResolver = NameResolver(resolver);
    }

    /**
     * @dev Transfers ownership of the reverse SID record associated with the
     *      calling account.
     * @param owner The address to set as the owner of the reverse record in SID.
     * @return The SID node hash of the reverse record.
     */
    function claim(address owner) public override returns (bytes32) {
        return claimForAddr(msg.sender, owner, address(defaultResolver));
    }

    /**
     * @dev Transfers ownership of the reverse SID record associated with the
     *      calling account.
     * @param addr The reverse record to set
     * @param owner The address to set as the owner of the reverse record in SID.
     * @return The SID node hash of the reverse record.
     */
    function claimForAddr(
        address addr,
        address owner,
        address resolver
    ) public override authorised(addr) returns (bytes32) {
        bytes32 labelHash = sha3HexAddress(addr);
        bytes32 reverseNode = keccak256(
            abi.encodePacked(ADDR_REVERSE_NODE, labelHash)
        );
        emit ReverseClaimed(addr, reverseNode);
        sid.setSubnodeRecord(ADDR_REVERSE_NODE, labelHash, owner, resolver, 0);
        return reverseNode;
    }

    /**
     * @dev Transfers ownership of the reverse SID record associated with the
     *      calling account.
     * @param owner The address to set as the owner of the reverse record in SID.
     * @param resolver The address of the resolver to set; 0 to leave unchanged.
     * @return The SID node hash of the reverse record.
     */
    function claimWithResolver(address owner, address resolver)
        public
        override
        returns (bytes32)
    {
        return claimForAddr(msg.sender, owner, resolver);
    }

    /**
     * @dev Sets the `name()` record for the reverse SID record associated with
     * the calling account. First updates the resolver to the default reverse
     * resolver if necessary.
     * @param name The name to set for this address.
     * @return The SID node hash of the reverse record.
     */
    function setName(string memory name) public override returns (bytes32) {
        return
            setNameForAddr(
                msg.sender,
                msg.sender,
                address(defaultResolver),
                name
            );
    }

    /**
     * @dev Sets the `name()` record for the reverse SID record associated with
     * the account provided. First updates the resolver to the default reverse
     * resolver if necessary.
     * Only callable by controllers and authorised users
     * @param addr The reverse record to set
     * @param owner The owner of the reverse node
     * @param name The name to set for this address.
     * @return The SID node hash of the reverse record.
     */
    function setNameForAddr(
        address addr,
        address owner,
        address resolver,
        string memory name
    ) public override returns (bytes32) {
        bytes32 node = claimForAddr(addr, owner, resolver);
        NameResolver(resolver).setName(node, name);
        return node;
    }

    /**
     * @dev Returns the node hash for a given account's reverse records.
     * @param addr The address to hash
     * @return The SID node hash.
     */
    function node(address addr) public pure override returns (bytes32) {
        return
            keccak256(
                abi.encodePacked(ADDR_REVERSE_NODE, sha3HexAddress(addr))
            );
    }

    /**
     * @dev An optimised function to compute the sha3 of the lower-case
     *      hexadecimal representation of an Ethereum address.
     * @param addr The address to hash
     * @return ret The SHA3 hash of the lower-case hexadecimal encoding of the
     *         input address.
     */
    function sha3HexAddress(address addr) private pure returns (bytes32 ret) {
        assembly {
            for {
                let i := 40
            } gt(i, 0) {

            } {
                i := sub(i, 1)
                mstore8(i, byte(and(addr, 0xf), lookup))
                addr := div(addr, 0x10)
                i := sub(i, 1)
                mstore8(i, byte(and(addr, 0xf), lookup))
                addr := div(addr, 0x10)
            }

            ret := keccak256(0, 40)
        }
    }

    function ownsContract(address addr) internal view returns (bool) {
        try Ownable(addr).owner() returns (address owner) {
            return owner == msg.sender;
        } catch {
            return false;
        }
    }
}

pragma solidity >=0.8.4;
import "../price-oracle/ISidPriceOracle.sol";
import "../struct/SidStruct.sol";
interface IRegistrarController {

    event NameRegistered(string name, bytes32 indexed label, address indexed owner, uint cost, uint expires);

    event NameRenewed(string name, bytes32 indexed label, uint cost, uint expires);

    event NewPriceOracle(address indexed oracle);

    event NewTreasuryManager(address indexed treasuryManager);
    
    function rentPrice(string calldata name, uint256 duration) external view returns (ISidPriceOracle.Price memory);

    /**
     * rent price with point redemption
     * @param name domain name
     * @param duration registration duration
     * @param registerAddress address of the registrant
     */
    function rentPriceWithPoint(string calldata name, uint256 duration, address registerAddress) external view returns (ISidPriceOracle.Price memory);

    /**
     * bulk rent price without point redemption
     * @param names domain names
     * @param duration registration duration
     */
    function bulkRentPrice(string[] calldata names, uint256 duration) external view returns (uint256);

    function valid(string calldata name) external pure returns (bool);

    function available(string calldata name) external view returns (bool);

    function register(string calldata name, address owner, uint duration) external payable;

    function registerWithConfigAndPoint(string calldata name, address owner, uint duration, address resolver, bool isUsePoints, bool isSetPrimaryName, ReferralInfo memory referralInfo) external payable;

    function bulkRegister(string[] calldata names, address owner, uint duration, address resolver, bool isUsePoints, bool isSetPrimaryName, ReferralInfo memory referralInfo) external payable;

    function bulkRenew(string[] calldata names, uint duration, bool isUsePoints) external payable;

    function renew(string calldata name, uint duration) external payable;

    function renewWithPoint(string calldata name, uint duration, bool isUsePoints) external payable;
}

pragma solidity >=0.8.4;

struct ReferralInfo {
    address referrerAddress;
    bytes32 referrerNodehash;
    uint256 referralAmount;
    uint256 signedAt;
    bytes signature;
}

struct RegInfo {
    address owner;
    uint duration;
    address resolver;
    bool isUsePoints;
    bool isSetPrimaryName;
    uint256 paidFee;
}

//SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "./profiles/IABIResolver.sol";
import "./profiles/IAddressResolver.sol";
import "./profiles/IAddrResolver.sol";
import "./profiles/IContentHashResolver.sol";
import "./profiles/IDNSRecordResolver.sol";
import "./profiles/IDNSZoneResolver.sol";
import "./profiles/IInterfaceResolver.sol";
import "./profiles/INameResolver.sol";
import "./profiles/IPubkeyResolver.sol";
import "./profiles/ITextResolver.sol";
import "./ISupportsInterface.sol";

/**
 * A generic resolver interface which includes all the functions including the ones deprecated
 */
interface Resolver is
    ISupportsInterface,
    IABIResolver,
    IAddressResolver,
    IAddrResolver,
    IContentHashResolver,
    IDNSRecordResolver,
    IDNSZoneResolver,
    IInterfaceResolver,
    INameResolver,
    IPubkeyResolver,
    ITextResolver
{
    /* Deprecated events */
    event ContentChanged(bytes32 indexed node, bytes32 hash);

    function setABI(
        bytes32 node,
        uint256 contentType,
        bytes calldata data
    ) external;

    function setAddr(bytes32 node, address addr) external;

    function setAddr(
        bytes32 node,
        uint256 coinType,
        bytes calldata a
    ) external;

    function setContenthash(bytes32 node, bytes calldata hash) external;

    function setDnsrr(bytes32 node, bytes calldata data) external;

    function setName(bytes32 node, string calldata _name) external;

    function setPubkey(
        bytes32 node,
        bytes32 x,
        bytes32 y
    ) external;

    function setText(
        bytes32 node,
        string calldata key,
        string calldata value
    ) external;

    function setInterface(
        bytes32 node,
        bytes4 interfaceID,
        address implementer
    ) external;

    function multicall(bytes[] calldata data)
        external
        returns (bytes[] memory results);

    /* Deprecated functions */
    function content(bytes32 node) external view returns (bytes32);

    function multihash(bytes32 node) external view returns (bytes memory);

    function setContent(bytes32 node, bytes32 hash) external;

    function setMultihash(bytes32 node, bytes calldata hash) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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 Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        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 v4.4.1 (utils/Address.sol)

pragma solidity ^0.8.0;

/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

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

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

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

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

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

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

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

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

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

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

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

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

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

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

        _;

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

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

pragma solidity ^0.8.0;

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

pragma solidity >=0.8.4;

interface SID {
    // Logged when the owner of a node assigns a new owner to a subnode.
    event NewOwner(bytes32 indexed node, bytes32 indexed label, address owner);

    // Logged when the owner of a node transfers ownership to a new account.
    event Transfer(bytes32 indexed node, address owner);

    // Logged when the resolver for a node changes.
    event NewResolver(bytes32 indexed node, address resolver);

    // Logged when the TTL of a node changes
    event NewTTL(bytes32 indexed node, uint64 ttl);

    // Logged when an operator is added or removed.
    event ApprovalForAll(
        address indexed owner,
        address indexed operator,
        bool approved
    );

    function setRecord(
        bytes32 node,
        address owner,
        address resolver,
        uint64 ttl
    ) external;

    function setSubnodeRecord(
        bytes32 node,
        bytes32 label,
        address owner,
        address resolver,
        uint64 ttl
    ) external;

    function setSubnodeOwner(
        bytes32 node,
        bytes32 label,
        address owner
    ) external returns (bytes32);

    function setResolver(bytes32 node, address resolver) external;

    function setOwner(bytes32 node, address owner) external;

    function setTTL(bytes32 node, uint64 ttl) external;

    function setApprovalForAll(address operator, bool approved) external;

    function owner(bytes32 node) external view returns (address);

    function resolver(bytes32 node) external view returns (address);

    function ttl(bytes32 node) external view returns (uint64);

    function recordExists(bytes32 node) external view returns (bool);

    function isApprovedForAll(address owner, address operator)
        external
        view
        returns (bool);
}

import "../registry/SID.sol";
import "./IBaseRegistrar.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";

interface IBaseRegistrar is IERC721 {

    event ControllerAdded(address indexed controller);
    event ControllerRemoved(address indexed controller);
    event NameMigrated(
        uint256 indexed id,
        address indexed owner,
        uint256 expires
    );
    event NameRegistered(
        uint256 indexed id,
        address indexed owner,
        uint256 expires
    );
    event NameRenewed(uint256 indexed id, uint256 expires);
    // Authorises a controller, who can register and renew domains.
    function addController(address controller) external;

    // Revoke controller permission for an address.
    function removeController(address controller) external;

    // Set the resolver for the TLD this registrar manages.
    function setResolver(address resolver) external;

    // Returns the expiration timestamp of the specified label hash.
    function nameExpires(uint256 id) external view returns (uint256);

    // Returns true iff the specified name is available for registration.
    function available(uint256 id) external view returns (bool);

    /**
     * @dev Register a name.
     */
    function register(
        uint256 id,
        address owner,
        uint256 duration
    ) external returns (uint256);

    function renew(uint256 id, uint256 duration) external returns (uint256);

    /**
     * @dev Reclaim ownership of a name in SID, if you own it in the registrar.
     */
    function reclaim(uint256 id, address owner) external;
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/ERC721.sol)

pragma solidity ^0.8.0;

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

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

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

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

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

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

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

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

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

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        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) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

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

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

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

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

        _approve(to, tokenId);
    }

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

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _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: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }

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

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

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

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[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) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
    }

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

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

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

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

        _balances[to] += 1;
        _owners[tokenId] = to;

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

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

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

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

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

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

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

        _beforeTokenTransfer(from, to, tokenId);

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

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);
    }

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

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

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

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

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

pragma solidity ^0.8.0;

import "./IERC165.sol";

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!paused(), "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(paused(), "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol)

pragma solidity ^0.8.0;

import "./ECDSA.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._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;
    address private immutable _CACHED_THIS;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;

    /* 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].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256(
            "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
        );
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _CACHED_THIS = address(this);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    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 ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}

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

pragma solidity ^0.8.0;

import "../Strings.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 ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV
    }

    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");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' 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) {
        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        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.
            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 if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                vs := mload(add(signature, 0x40))
            }
            return tryRecover(hash, r, vs);
        } 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;
        uint8 v;
        assembly {
            s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
            v := add(shr(255, vs), 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 (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

        // 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", Strings.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));
    }
}

pragma solidity >=0.8.4;

interface IReverseRegistrar {
    function setDefaultResolver(address resolver) external;

    function claim(address owner) external returns (bytes32);

    function claimForAddr(
        address addr,
        address owner,
        address resolver
    ) external returns (bytes32);

    function claimWithResolver(address owner, address resolver)
        external
        returns (bytes32);

    function setName(string memory name) external returns (bytes32);

    function setNameForAddr(
        address addr,
        address owner,
        address resolver,
        string memory name
    ) external returns (bytes32);

    function node(address addr) external pure returns (bytes32);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IReferralHub {
    event ControllerAdded(address indexed controller);
    event ControllerRemoved(address indexed controller);
    event NewReferralRecord(bytes32 indexed referralNodeHash);
    event depositRecord(address indexed addr, uint256 amount);
    event withdrawRecord(address indexed addr, uint256 amount);
    

    //Authorises a controller, who can issue a gift card.
    function addController(address controller) external;

    // Revoke controller permission for an address.
    function removeController(address controller) external;

    //check if a domain name is eligible for referral program
    function isReferralEligible(
        bytes32 nodeHash
    ) external view returns (bool, address);

    //add a referral count for a given referrer
    function addNewReferralRecord(bytes32 referrerNodeHash) external;

    //get a domain's referral count, referral comission and referee comission
    function getReferralDetails(bytes32 referrerNodeHash)
        external
        view
        returns (
            uint256,
            uint256,
            uint256,
            uint256
        );

    //set partner comission chart
    function setPartnerComissionChart(
        string calldata name,
        string calldata tld,
        uint256 minimumReferralCount,
        uint256 referrerComission,
        uint256 refereeComission
    ) external;

    function getReferralCommisionFee(uint256 price, bytes32 nodeHash) external view returns (uint256, uint256);

    function deposit(address _referrer) external payable;

    function withdraw() external;
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "../ResolverBase.sol";
import "./IAddrResolver.sol";
import "./IAddressResolver.sol";

abstract contract AddrResolver is IAddrResolver, IAddressResolver, ResolverBase {
    uint constant private COIN_TYPE_ETH = 60;

    mapping(bytes32=>mapping(uint=>bytes)) _addresses;

    /**
     * Sets the address associated with an ENS node.
     * May only be called by the owner of that node in the ENS registry.
     * @param node The node to update.
     * @param a The address to set.
     */
    function setAddr(bytes32 node, address a) virtual external authorised(node) {
        setAddr(node, COIN_TYPE_ETH, addressToBytes(a));
    }

    /**
     * Returns the address associated with an ENS node.
     * @param node The ENS node to query.
     * @return The associated address.
     */
    function addr(bytes32 node) virtual override public view returns (address payable) {
        bytes memory a = addr(node, COIN_TYPE_ETH);
        if(a.length == 0) {
            return payable(0);
        }
        return bytesToAddress(a);
    }

    function setAddr(bytes32 node, uint coinType, bytes memory a) virtual public authorised(node) {
        emit AddressChanged(node, coinType, a);
        if(coinType == COIN_TYPE_ETH) {
            emit AddrChanged(node, bytesToAddress(a));
        }
        _addresses[node][coinType] = a;
    }

    function addr(bytes32 node, uint coinType) virtual override public view returns(bytes memory) {
        return _addresses[node][coinType];
    }

    function supportsInterface(bytes4 interfaceID) virtual override public pure returns(bool) {
        return interfaceID == type(IAddrResolver).interfaceId || interfaceID == type(IAddressResolver).interfaceId || super.supportsInterface(interfaceID);
    }

    function bytesToAddress(bytes memory b) internal pure returns(address payable a) {
        require(b.length == 20);
        assembly {
            a := div(mload(add(b, 32)), exp(256, 12))
        }
    }

    function addressToBytes(address a) internal pure returns(bytes memory b) {
        b = new bytes(20);
        assembly {
            mstore(add(b, 32), mul(a, exp(256, 12)))
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "../ResolverBase.sol";
import "./INameResolver.sol";

abstract contract NameResolver is INameResolver, ResolverBase {
    mapping(bytes32=>string) names;

    /**
     * Sets the name associated with an ENS node, for reverse records.
     * May only be called by the owner of that node in the ENS registry.
     * @param node The node to update.
     */
    function setName(bytes32 node, string calldata newName) virtual external authorised(node) {
        names[node] = newName;
        emit NameChanged(node, newName);
    }

    /**
     * Returns the name associated with an ENS node, for reverse records.
     * Defined in EIP181.
     * @param node The ENS node to query.
     * @return The associated name.
     */
    function name(bytes32 node) virtual override external view returns (string memory) {
        return names[node];
    }

    function supportsInterface(bytes4 interfaceID) virtual override public pure returns(bool) {
        return interfaceID == type(INameResolver).interfaceId || super.supportsInterface(interfaceID);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "./SupportsInterface.sol";

abstract contract ResolverBase is SupportsInterface {
    function isAuthorised(bytes32 node) internal virtual view returns(bool);

    modifier authorised(bytes32 node) {
        require(isAuthorised(node));
        _;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

/**
 * Interface for the legacy (ETH-only) addr function.
 */
interface IAddrResolver {
    event AddrChanged(bytes32 indexed node, address a);

    /**
     * Returns the address associated with an ENS node.
     * @param node The ENS node to query.
     * @return The associated address.
     */
    function addr(bytes32 node) external view returns (address payable);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

/**
 * Interface for the new (multicoin) addr function.
 */
interface IAddressResolver {
    event AddressChanged(bytes32 indexed node, uint coinType, bytes newAddress);

    function addr(bytes32 node, uint coinType) external view returns(bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "./ISupportsInterface.sol";

abstract contract SupportsInterface is ISupportsInterface {
    function supportsInterface(bytes4 interfaceID) virtual override public pure returns(bool) {
        return interfaceID == type(ISupportsInterface).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

interface ISupportsInterface {
    function supportsInterface(bytes4 interfaceID) external pure returns(bool);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface INameResolver {
    event NameChanged(bytes32 indexed node, string name);

    /**
     * Returns the name associated with an ENS node, for reverse records.
     * Defined in EIP181.
     * @param node The ENS node to query.
     * @return The associated name.
     */
    function name(bytes32 node) external view returns (string memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;
import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./ISidGiftCardRegistrar.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/security/Pausable.sol";

contract SidGiftCardRegistrar is ERC1155, ISidGiftCardRegistrar, Ownable, Pausable {
    mapping(address => bool) public controllers;

    constructor() ERC1155("") {}

    modifier onlyController() {
        require(controllers[msg.sender], "Not a authorized controller");
        _;
    }

    function setURI(string calldata newURI) external onlyOwner {
        _setURI(newURI);
    }

    function uri(uint256 _id) public view virtual override(ERC1155) returns (string memory) {
        return string(abi.encodePacked(ERC1155.uri(_id), Strings.toString(_id)));
    }

    function name() public view virtual returns (string memory) {
        return "SPACE ID Gift Card";
    }

    function symbol() public view virtual returns (string memory) {
        return "SIDGC";
    }

    function register(
        address to,
        uint256 id,
        uint256 amount
    ) external onlyController whenNotPaused returns (uint256, uint256) {
        super._mint(to, id, amount, "");
        return (id, amount);
    }

    function batchRegister(
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts
    ) external onlyController whenNotPaused {
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
        for (uint256 i = 0; i < ids.length; i++) {
            if (amounts[i] > 0) {
                super._mint(to, ids[i], amounts[i], "");
            }
        }
    }

    function batchBurn(
        address account,
        uint256[] calldata ids,
        uint256[] calldata amounts
    ) external onlyController whenNotPaused {
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
        for (uint256 i = 0; i < ids.length; i++) {
            if (amounts[i] > 0) {
                super._burn(account, ids[i], amounts[i]);
            }
        }
    }

    function addController(address controller) external override onlyOwner {
        require(controller != address(0), "address can not be zero!");
        controllers[controller] = true;
        emit ControllerAdded(controller);
    }

    function removeController(address controller) external override onlyOwner {
        require(controller != address(0), "address can not be zero!");
        controllers[controller] = false;
        emit ControllerRemoved(controller);
    }

    function pause() external onlyOwner {
        _pause();
    }

    function unpause() external onlyOwner {
        _unpause();
    }

    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts,
        bytes calldata data
    ) public virtual whenNotPaused override(ERC1155, IERC1155) {
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
        for (uint256 i = 0; i < ids.length; i++) {
            if (amounts[i] > 0) {
                super.safeTransferFrom(from, to, ids[i], amounts[i], data);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;
import "@openzeppelin/contracts/access/Ownable.sol";

contract SidGiftCardVoucher is Ownable {
    uint256 public constant THREE_DIGIT_VOUCHER = 0;
    uint256 public constant FOUR_DIGIT_VOUCHER = 1;
    uint256 public constant FIVE_DIGIT_VOUCHER = 2;

    uint256 public constant THREE_DIGIT_VOUCHER_VALUE = 650 * (10**18);
    uint256 public constant FOUR_DIGIT_VOUCHER_VALUE = 160 * (10**18);
    uint256 public constant FIVE_DIGIT_VOUCHER_VALUE = 5 * (10**18);

    mapping(uint256 => uint256) public voucherValues;

    constructor() {
        voucherValues[THREE_DIGIT_VOUCHER] = THREE_DIGIT_VOUCHER_VALUE;
        voucherValues[FOUR_DIGIT_VOUCHER] = FOUR_DIGIT_VOUCHER_VALUE;
        voucherValues[FIVE_DIGIT_VOUCHER] = FIVE_DIGIT_VOUCHER_VALUE;
    }

    function addCustomizedVoucher(uint256 tokenId, uint256 price) external onlyOwner {
        require(voucherValues[tokenId] == 0, "voucher already exsits");
        voucherValues[tokenId] = price;
    }
    
    function totalValue(uint256[] calldata ids, uint256[] calldata amounts) external view returns (uint256) {
        uint256 total = 0;
        for (uint256 i = 0; i < ids.length; i++) {
            total += voucherValues[ids[i]] * amounts[i];
        }
        return total;
    }

    function isValidVoucherIds(uint256[] calldata id) external view returns (bool) {
        for (uint256 i = 0; i < id.length; i++) {
            if (voucherValues[id[i]] == 0) {
                return false;
            }
        }
        return true;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;
import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

interface ISidGiftCardRegistrar is IERC1155 {
    event ControllerAdded(address indexed controller);
    event ControllerRemoved(address indexed controller);

    //Authorises a controller, who can issue a gift card.
    function addController(address controller) external;

    // Revoke controller permission for an address.
    function removeController(address controller) external;

    //Register new gift card voucher
    function register(
        address to,
        uint256 id,
        uint256 amount
    ) external returns (uint256, uint256);

    //batch register new gift card voucher
    function batchRegister(
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/ERC1155.sol)

pragma solidity ^0.8.0;

import "./IERC1155.sol";
import "./IERC1155Receiver.sol";
import "./extensions/IERC1155MetadataURI.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of the basic standard multi-token.
 * See https://eips.ethereum.org/EIPS/eip-1155
 * Originally based on code by Enjin: https://github.com/enjin/erc-1155
 *
 * _Available since v3.1._
 */
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI {
    using Address for address;

    // Mapping from token ID to account balances
    mapping(uint256 => mapping(address => uint256)) private _balances;

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

    // Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json
    string private _uri;

    /**
     * @dev See {_setURI}.
     */
    constructor(string memory uri_) {
        _setURI(uri_);
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC1155).interfaceId ||
            interfaceId == type(IERC1155MetadataURI).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC1155MetadataURI-uri}.
     *
     * This implementation returns the same URI for *all* token types. It relies
     * on the token type ID substitution mechanism
     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
     *
     * Clients calling this function must replace the `\{id\}` substring with the
     * actual token type ID.
     */
    function uri(uint256) public view virtual override returns (string memory) {
        return _uri;
    }

    /**
     * @dev See {IERC1155-balanceOf}.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) public view virtual override returns (uint256) {
        require(account != address(0), "ERC1155: balance query for the zero address");
        return _balances[id][account];
    }

    /**
     * @dev See {IERC1155-balanceOfBatch}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] memory accounts, uint256[] memory ids)
        public
        view
        virtual
        override
        returns (uint256[] memory)
    {
        require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch");

        uint256[] memory batchBalances = new uint256[](accounts.length);

        for (uint256 i = 0; i < accounts.length; ++i) {
            batchBalances[i] = balanceOf(accounts[i], ids[i]);
        }

        return batchBalances;
    }

    /**
     * @dev See {IERC1155-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC1155-isApprovedForAll}.
     */
    function isApprovedForAll(address account, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[account][operator];
    }

    /**
     * @dev See {IERC1155-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) public virtual override {
        require(
            from == _msgSender() || isApprovedForAll(from, _msgSender()),
            "ERC1155: caller is not owner nor approved"
        );
        _safeTransferFrom(from, to, id, amount, data);
    }

    /**
     * @dev See {IERC1155-safeBatchTransferFrom}.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) public virtual override {
        require(
            from == _msgSender() || isApprovedForAll(from, _msgSender()),
            "ERC1155: transfer caller is not owner nor approved"
        );
        _safeBatchTransferFrom(from, to, ids, amounts, data);
    }

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function _safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), data);

        uint256 fromBalance = _balances[id][from];
        require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
        unchecked {
            _balances[id][from] = fromBalance - amount;
        }
        _balances[id][to] += amount;

        emit TransferSingle(operator, from, to, id, amount);

        _doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function _safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, from, to, ids, amounts, data);

        for (uint256 i = 0; i < ids.length; ++i) {
            uint256 id = ids[i];
            uint256 amount = amounts[i];

            uint256 fromBalance = _balances[id][from];
            require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
            unchecked {
                _balances[id][from] = fromBalance - amount;
            }
            _balances[id][to] += amount;
        }

        emit TransferBatch(operator, from, to, ids, amounts);

        _doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
    }

    /**
     * @dev Sets a new URI for all token types, by relying on the token type ID
     * substitution mechanism
     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
     *
     * By this mechanism, any occurrence of the `\{id\}` substring in either the
     * URI or any of the amounts in the JSON file at said URI will be replaced by
     * clients with the token type ID.
     *
     * For example, the `https://token-cdn-domain/\{id\}.json` URI would be
     * interpreted by clients as
     * `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`
     * for token type ID 0x4cce0.
     *
     * See {uri}.
     *
     * Because these URIs cannot be meaningfully represented by the {URI} event,
     * this function emits no events.
     */
    function _setURI(string memory newuri) internal virtual {
        _uri = newuri;
    }

    /**
     * @dev Creates `amount` tokens of token type `id`, and assigns them to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function _mint(
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: mint to the zero address");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, address(0), to, _asSingletonArray(id), _asSingletonArray(amount), data);

        _balances[id][to] += amount;
        emit TransferSingle(operator, address(0), to, id, amount);

        _doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data);
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function _mintBatch(
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: mint to the zero address");
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, address(0), to, ids, amounts, data);

        for (uint256 i = 0; i < ids.length; i++) {
            _balances[ids[i]][to] += amounts[i];
        }

        emit TransferBatch(operator, address(0), to, ids, amounts);

        _doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);
    }

    /**
     * @dev Destroys `amount` tokens of token type `id` from `from`
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `from` must have at least `amount` tokens of token type `id`.
     */
    function _burn(
        address from,
        uint256 id,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC1155: burn from the zero address");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, from, address(0), _asSingletonArray(id), _asSingletonArray(amount), "");

        uint256 fromBalance = _balances[id][from];
        require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
        unchecked {
            _balances[id][from] = fromBalance - amount;
        }

        emit TransferSingle(operator, from, address(0), id, amount);
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     */
    function _burnBatch(
        address from,
        uint256[] memory ids,
        uint256[] memory amounts
    ) internal virtual {
        require(from != address(0), "ERC1155: burn from the zero address");
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, from, address(0), ids, amounts, "");

        for (uint256 i = 0; i < ids.length; i++) {
            uint256 id = ids[i];
            uint256 amount = amounts[i];

            uint256 fromBalance = _balances[id][from];
            require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
            unchecked {
                _balances[id][from] = fromBalance - amount;
            }
        }

        emit TransferBatch(operator, from, address(0), ids, amounts);
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits a {ApprovalForAll} event.
     */
    function _setApprovalForAll(
        address owner,
        address operator,
        bool approved
    ) internal virtual {
        require(owner != operator, "ERC1155: setting approval status for self");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning, as well as batched variants.
     *
     * The same hook is called on both single and batched variants. For single
     * transfers, the length of the `id` and `amount` arrays will be 1.
     *
     * Calling conditions (for each `id` and `amount` pair):
     *
     * - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * of token type `id` will be  transferred to `to`.
     * - When `from` is zero, `amount` tokens of token type `id` will be minted
     * for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
     * will be burned.
     * - `from` and `to` are never both zero.
     * - `ids` and `amounts` have the same, non-zero length.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {}

    function _doSafeTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) private {
        if (to.isContract()) {
            try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
                if (response != IERC1155Receiver.onERC1155Received.selector) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non ERC1155Receiver implementer");
            }
        }
    }

    function _doSafeBatchTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) private {
        if (to.isContract()) {
            try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
                bytes4 response
            ) {
                if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non ERC1155Receiver implementer");
            }
        }
    }

    function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) {
        uint256[] memory array = new uint256[](1);
        array[0] = element;

        return array;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Required interface of an ERC1155 compliant contract, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1155[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155 is IERC165 {
    /**
     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
     */
    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);

    /**
     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
     * transfers.
     */
    event TransferBatch(
        address indexed operator,
        address indexed from,
        address indexed to,
        uint256[] ids,
        uint256[] values
    );

    /**
     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
     * `approved`.
     */
    event ApprovalForAll(address indexed account, address indexed operator, bool approved);

    /**
     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
     *
     * If an {URI} event was emitted for `id`, the standard
     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
     * returned by {IERC1155MetadataURI-uri}.
     */
    event URI(string value, uint256 indexed id);

    /**
     * @dev Returns the amount of tokens of token type `id` owned by `account`.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) external view returns (uint256);

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
        external
        view
        returns (uint256[] memory);

    /**
     * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
     *
     * Emits an {ApprovalForAll} event.
     *
     * Requirements:
     *
     * - `operator` cannot be the caller.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address account, address operator) external view returns (bool);

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes calldata data
    ) external;

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155Receiver.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev _Available since v3.1._
 */
interface IERC1155Receiver is IERC165 {
    /**
        @dev Handles the receipt of a single ERC1155 token type. This function is
        called at the end of a `safeTransferFrom` after the balance has been updated.
        To accept the transfer, this must return
        `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
        (i.e. 0xf23a6e61, or its own function selector).
        @param operator The address which initiated the transfer (i.e. msg.sender)
        @param from The address which previously owned the token
        @param id The ID of the token being transferred
        @param value The amount of tokens being transferred
        @param data Additional data with no specified format
        @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
    */
    function onERC1155Received(
        address operator,
        address from,
        uint256 id,
        uint256 value,
        bytes calldata data
    ) external returns (bytes4);

    /**
        @dev Handles the receipt of a multiple ERC1155 token types. This function
        is called at the end of a `safeBatchTransferFrom` after the balances have
        been updated. To accept the transfer(s), this must return
        `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
        (i.e. 0xbc197c81, or its own function selector).
        @param operator The address which initiated the batch transfer (i.e. msg.sender)
        @param from The address which previously owned the token
        @param ids An array containing ids of each token being transferred (order and length must match values array)
        @param values An array containing amounts of each token being transferred (order and length must match ids array)
        @param data Additional data with no specified format
        @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
    */
    function onERC1155BatchReceived(
        address operator,
        address from,
        uint256[] calldata ids,
        uint256[] calldata values,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol)

pragma solidity ^0.8.0;

import "../IERC1155.sol";

/**
 * @dev Interface of the optional ERC1155MetadataExtension interface, as defined
 * in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155MetadataURI is IERC1155 {
    /**
     * @dev Returns the URI for token type `id`.
     *
     * If the `\{id\}` substring is present in the URI, it must be replaced by
     * clients with the actual token type ID.
     */
    function uri(uint256 id) external view returns (string memory);
}

pragma solidity ^0.8.4;

import "@openzeppelin/contracts/access/Ownable.sol";

contract Controllable is Ownable {
    mapping(address => bool) public controllers;

    event ControllerChanged(address indexed controller, bool enabled);

    modifier onlyController {
        require(
            controllers[msg.sender],
            "Controllable: Caller is not a controller"
        );
        _;
    }

    function setController(address controller, bool enabled) public onlyOwner {
        controllers[controller] = enabled;
        emit ControllerChanged(controller, enabled);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "./IABIResolver.sol";
import "../ResolverBase.sol";

interface IABIResolver {
    event ABIChanged(bytes32 indexed node, uint256 indexed contentType);
    /**
     * Returns the ABI associated with an ENS node.
     * Defined in EIP205.
     * @param node The ENS node to query
     * @param contentTypes A bitwise OR of the ABI formats accepted by the caller.
     * @return contentType The content type of the return value
     * @return data The ABI data
     */
    function ABI(bytes32 node, uint256 contentTypes) external view returns (uint256, bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IDNSZoneResolver {
    // DNSZonehashChanged is emitted whenever a given node's zone hash is updated.
    event DNSZonehashChanged(bytes32 indexed node, bytes lastzonehash, bytes zonehash);

    /**
     * zonehash obtains the hash for the zone.
     * @param node The ENS node to query.
     * @return The associated contenthash.
     */
    function zonehash(bytes32 node) external view returns (bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IDNSRecordResolver {
    // DNSRecordChanged is emitted whenever a given node/name/resource's RRSET is updated.
    event DNSRecordChanged(bytes32 indexed node, bytes name, uint16 resource, bytes record);
    // DNSRecordDeleted is emitted whenever a given node/name/resource's RRSET is deleted.
    event DNSRecordDeleted(bytes32 indexed node, bytes name, uint16 resource);
    // DNSZoneCleared is emitted whenever a given node's zone information is cleared.
    event DNSZoneCleared(bytes32 indexed node);

    /**
     * Obtain a DNS record.
     * @param node the namehash of the node for which to fetch the record
     * @param name the keccak-256 hash of the fully-qualified name for which to fetch the record
     * @param resource the ID of the resource as per https://en.wikipedia.org/wiki/List_of_DNS_record_types
     * @return the DNS record in wire format if present, otherwise empty
     */
    function dnsRecord(bytes32 node, bytes32 name, uint16 resource) external view returns (bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IInterfaceResolver {
    event InterfaceChanged(bytes32 indexed node, bytes4 indexed interfaceID, address implementer);

    /**
     * Returns the address of a contract that implements the specified interface for this name.
     * If an implementer has not been set for this interfaceID and name, the resolver will query
     * the contract at `addr()`. If `addr()` is set, a contract exists at that address, and that
     * contract implements EIP165 and returns `true` for the specified interfaceID, its address
     * will be returned.
     * @param node The ENS node to query.
     * @param interfaceID The EIP 165 interface ID to check for.
     * @return The address that implements this interface, or 0 if the interface is unsupported.
     */
    function interfaceImplementer(bytes32 node, bytes4 interfaceID) external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IContentHashResolver {
    event ContenthashChanged(bytes32 indexed node, bytes hash);

    /**
     * Returns the contenthash associated with an ENS node.
     * @param node The ENS node to query.
     * @return The associated contenthash.
     */
    function contenthash(bytes32 node) external view returns (bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IPubkeyResolver {
    event PubkeyChanged(bytes32 indexed node, bytes32 x, bytes32 y);

    /**
     * Returns the SECP256k1 public key associated with an ENS node.
     * Defined in EIP 619.
     * @param node The ENS node to query
     * @return x The X coordinate of the curve point for the public key.
     * @return y The Y coordinate of the curve point for the public key.
     */
    function pubkey(bytes32 node) external view returns (bytes32 x, bytes32 y);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface ITextResolver {
    event TextChanged(bytes32 indexed node, string indexed indexedKey, string key);

    /**
     * Returns the text data associated with an ENS node and key.
     * @param node The ENS node to query.
     * @param key The text data key to query.
     * @return The associated text data.
     */
    function text(bytes32 node, string calldata key) external view returns (string memory);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract BaseRegistrarImplementation","name":"_base","type":"address"},{"internalType":"contract ISidPriceOracle","name":"_prices","type":"address"},{"internalType":"contract SidGiftCardLedger","name":"_giftCardLedger","type":"address"},{"internalType":"contract ReferralHub","name":"_referralHub","type":"address"},{"internalType":"contract ReferralVerifier","name":"_referralVerifier","type":"address"},{"internalType":"contract ReverseRegistrar","name":"_reverseRegistrar","type":"address"},{"internalType":"address","name":"_treasuryManager","type":"address"},{"internalType":"uint256","name":"_version","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"name","type":"string"},{"indexed":true,"internalType":"bytes32","name":"label","type":"bytes32"},{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"cost","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"expires","type":"uint256"}],"name":"NameRegistered","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"name","type":"string"},{"indexed":true,"internalType":"bytes32","name":"label","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"cost","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"expires","type":"uint256"}],"name":"NameRenewed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oracle","type":"address"}],"name":"NewPriceOracle","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"treasuryManager","type":"address"}],"name":"NewTreasuryManager","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"MIN_REGISTRATION_DURATION","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"}],"name":"available","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string[]","name":"names","type":"string[]"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"duration","type":"uint256"},{"internalType":"address","name":"resolver","type":"address"},{"internalType":"bool","name":"isUseGiftCard","type":"bool"},{"internalType":"bool","name":"isSetPrimaryName","type":"bool"},{"components":[{"internalType":"address","name":"referrerAddress","type":"address"},{"internalType":"bytes32","name":"referrerNodehash","type":"bytes32"},{"internalType":"uint256","name":"referralAmount","type":"uint256"},{"internalType":"uint256","name":"signedAt","type":"uint256"},{"internalType":"bytes","name":"signature","type":"bytes"}],"internalType":"struct ReferralInfo","name":"referralInfo","type":"tuple"}],"name":"bulkRegister","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"string[]","name":"names","type":"string[]"},{"internalType":"uint256","name":"duration","type":"uint256"},{"internalType":"bool","name":"isUsePoints","type":"bool"}],"name":"bulkRenew","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"string[]","name":"names","type":"string[]"},{"internalType":"uint256","name":"duration","type":"uint256"}],"name":"bulkRentPrice","outputs":[{"internalType":"uint256","name":"total","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"duration","type":"uint256"}],"name":"register","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"duration","type":"uint256"},{"internalType":"address","name":"resolver","type":"address"},{"internalType":"bool","name":"isUsePoints","type":"bool"},{"internalType":"bool","name":"isSetPrimaryName","type":"bool"},{"components":[{"internalType":"address","name":"referrerAddress","type":"address"},{"internalType":"bytes32","name":"referrerNodehash","type":"bytes32"},{"internalType":"uint256","name":"referralAmount","type":"uint256"},{"internalType":"uint256","name":"signedAt","type":"uint256"},{"internalType":"bytes","name":"signature","type":"bytes"}],"internalType":"struct ReferralInfo","name":"referralInfo","type":"tuple"}],"name":"registerWithConfigAndPoint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"uint256","name":"duration","type":"uint256"}],"name":"renew","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"uint256","name":"duration","type":"uint256"},{"internalType":"bool","name":"isUsePoints","type":"bool"}],"name":"renewWithPoint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"uint256","name":"duration","type":"uint256"}],"name":"rentPrice","outputs":[{"components":[{"internalType":"uint256","name":"base","type":"uint256"},{"internalType":"uint256","name":"premium","type":"uint256"},{"internalType":"uint256","name":"usedPoint","type":"uint256"}],"internalType":"struct ISidPriceOracle.Price","name":"price","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"uint256","name":"duration","type":"uint256"},{"internalType":"address","name":"registerAddress","type":"address"}],"name":"rentPriceWithPoint","outputs":[{"components":[{"internalType":"uint256","name":"base","type":"uint256"},{"internalType":"uint256","name":"premium","type":"uint256"},{"internalType":"uint256","name":"usedPoint","type":"uint256"}],"internalType":"struct ISidPriceOracle.Price","name":"price","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract ISidPriceOracle","name":"_prices","type":"address"}],"name":"setPriceOracle","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_treasuryManager","type":"address"}],"name":"setTreasuryManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"subfix","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"treasuryManager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"}],"name":"valid","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

-----Decoded View---------------
Arg [0] : _base (address): 0xE3b1D32e43Ce8d658368e2CBFF95D57Ef39Be8a6
Arg [1] : _prices (address): 0x9a45d1E9000Ca0B3aa9B5F0c111aca87E65c1c0a
Arg [2] : _giftCardLedger (address): 0x7B13756870e4f29482C9519101D916150f5d2390
Arg [3] : _referralHub (address): 0xE230e8ab92577A2b74C781C0C9614B9474ab3ACB
Arg [4] : _referralVerifier (address): 0xB5C0075350655E742A4017c9d1d97cF46073f4B1
Arg [5] : _reverseRegistrar (address): 0xc647d0EbEdDc9Eb8FFa01E992511cC5cBeF270D6
Arg [6] : _treasuryManager (address): 0x0e76a6dC9af8080b48C51E564e964CD15b9D6664
Arg [7] : _version (uint256): 12

-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 000000000000000000000000e3b1d32e43ce8d658368e2cbff95d57ef39be8a6
Arg [1] : 0000000000000000000000009a45d1e9000ca0b3aa9b5f0c111aca87e65c1c0a
Arg [2] : 0000000000000000000000007b13756870e4f29482c9519101d916150f5d2390
Arg [3] : 000000000000000000000000e230e8ab92577a2b74c781c0c9614b9474ab3acb
Arg [4] : 000000000000000000000000b5c0075350655e742a4017c9d1d97cf46073f4b1
Arg [5] : 000000000000000000000000c647d0ebeddc9eb8ffa01e992511cc5cbef270d6
Arg [6] : 0000000000000000000000000e76a6dc9af8080b48c51e564e964cd15b9d6664
Arg [7] : 000000000000000000000000000000000000000000000000000000000000000c