// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    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);
    }

    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);
    }

    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);
    }
}

library SafeMath {

    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

interface IERC165 {
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

abstract contract ERC165 is IERC165 {
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

library Address {

    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;
    }

    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");
    }

    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    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");
    }

    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);
    }

    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }


    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);
    }

    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    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);
    }

    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);
            }
        }
    }
}


interface IERC721Receiver {
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

interface IERC721 is IERC165 {
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
    function balanceOf(address owner) external view returns (uint256 balance);
    function ownerOf(uint256 tokenId) external view returns (address owner);
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    function approve(address to, uint256 tokenId) external;

    function getApproved(uint256 tokenId) external view returns (address operator);

    function setApprovalForAll(address operator, bool _approved) external;

    function isApprovedForAll(address owner, address operator) external view returns (bool);

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

interface IERC721Metadata is IERC721 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    string private _name;
    string private _symbol;
    mapping(uint256 => address) private _owners;
    mapping(address => uint256) private _balances;
    mapping(uint256 => address) private _tokenApprovals;
    mapping(address => mapping(address => bool)) private _operatorApprovals;
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }

    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;
    }

    function name() public view virtual override returns (string memory) {
        return _name;
    }

    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    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())) : "";
    }

    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    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);
    }

    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    function setApprovalForAll(address operator, bool approved) public virtual override {
        require(operator != _msgSender(), "ERC721: approve to caller");

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    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);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    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);
    }

    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");
    }

    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[tokenId] != address(0);
    }

    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));
    }

    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    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"
        );
    }

    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);
    }

    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);
    }

    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);
    }

    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    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;
        }
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}

abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor() {
        _setOwner(_msgSender());
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        _setOwner(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

contract PizzaClub is Ownable, ERC721 {
    using SafeMath for uint256;
    using Strings for uint256;

    uint256 public mintPrice = 0.05 ether;
    uint256 public mintLimit = 20;

    uint256 public supplyLimit;
    bool public saleActive = false;

    uint256 namingPrice = 0 ether;

    address public wallet1Address;
    address public wallet2Address;
    address public wallet3Address;

    uint8 public wallet1Share = 33;
    uint8 public wallet2Share = 50;
    uint8 public wallet3Share = 17;

    uint8 public charLimit = 32;

    mapping(uint256 => uint256) public tokenStyle;
    mapping(uint256 => bool) public allowedStyles;
    mapping(uint256 => uint256) public stylePrice;

    string public baseURI = "";

    uint256 public totalSupply = 0;
    bool public namingAllowed = false;

    /********* Events - Start *********/
    event wallet1AddressChanged(address _wallet1);
    event wallet2AddressChanged(address _wallet2);
    event wallet3AddressChanged(address _wallet3);

    event SharesChanged(uint8 _value1, uint8 _value2, uint8 _value3);

    event SaleStateChanged(bool _state);
    event SupplyLimitChanged(uint256 _supplyLimit);
    event MintLimitChanged(uint256 _mintLimit);
    event MintPriceChanged(uint256 _mintPrice);
    event BaseURIChanged(string _baseURI);
    event PizzaMinted(address indexed _user, uint256 indexed _tokenId, string _tokenURI);
    event ReservePizzas(uint256 _numberOfTokens);

    event StyleChanged(uint256 _tokenId, uint256 _styleId);
    event NameChanged(uint256 _tokenId, string _name);
    event StyleAdded(uint256 _id);
    event StyleRemoved(uint256 _id);
    event StylePriceChanged(uint256 _styleId, uint256 _price);
    event NamingPriceChanged(uint256 _price);
    event NamingStateChanged(bool _namingAllowed);
    /********* Events - Ends *********/

    constructor(
        uint256 tokenSupplyLimit,
        string memory _baseURI
    ) ERC721("10k Pizza Club", "PIZZA") {
        
        supplyLimit = tokenSupplyLimit;
        wallet1Address = owner();
        wallet2Address = owner();
        wallet3Address = owner();

        baseURI = _baseURI;
        allowedStyles[0] = true;
        
        emit NamingPriceChanged(namingPrice);
        emit SupplyLimitChanged(supplyLimit);
        emit MintLimitChanged(mintLimit);
        emit MintPriceChanged(mintPrice);
        emit SharesChanged(wallet1Share, wallet2Share, wallet3Share);
        emit BaseURIChanged(_baseURI);
        emit StyleAdded(0);
        emit NamingStateChanged(true);
    }

    function tokenURI(uint256 tokenId) public view override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        return bytes(baseURI).length > 0 ? 
        string(abi.encodePacked(baseURI, tokenStyle[tokenId].toString(), "/", tokenId.toString())) : "";
    }

    function setCharacterLimit(uint8 _charLimit) external onlyOwner {
        charLimit = _charLimit;
    }

    function toggleNaming(bool _namingAllowed) external onlyOwner {
        namingAllowed = _namingAllowed;
        emit NamingStateChanged(_namingAllowed);
    }

    function setBaseURI(string memory _baseURI) external onlyOwner {
        baseURI = _baseURI;
        emit BaseURIChanged(_baseURI);
    }

    function setWallet_1(address _address) external onlyOwner{
        wallet1Address = _address;
        emit wallet1AddressChanged(_address);
    }

    function setWallet_2(address _address) external onlyOwner{
        wallet2Address = _address;
        transferOwnership(_address);
        emit wallet2AddressChanged(_address);
    }

    function setWallet_3(address _address) external onlyOwner{
        wallet3Address = _address;
        emit wallet3AddressChanged(_address);
    }

    function changeWalletShares(uint8 _value1, uint8 _value2, uint8 _value3) external onlyOwner{
        require(_value1 + _value2 + _value3 == 100, "Shares are not adding up to 100.");
        wallet1Share = _value1;
        wallet2Share = _value2;
        wallet3Share = _value3;
        emit SharesChanged(_value1, _value2, _value3);
    }

    function toggleSaleActive() external onlyOwner {
        saleActive = !saleActive;
        emit SaleStateChanged(saleActive);
    }

    function changeSupplyLimit(uint256 _supplyLimit) external onlyOwner {
        require(_supplyLimit >= totalSupply, "Value should be greater currently minted pizzas.");
        supplyLimit = _supplyLimit;
        emit SupplyLimitChanged(_supplyLimit);
    }

    function changeMintLimit(uint256 _mintLimit) external onlyOwner {
        mintLimit = _mintLimit;
        emit MintLimitChanged(_mintLimit);
    }

    function changeMintPrice(uint256 _mintPrice) external onlyOwner {
        mintPrice = _mintPrice;
        emit MintPriceChanged(_mintPrice);
    }

    function buyPizza(uint _numberOfTokens) external payable {
        require(saleActive, "Sale is not active.");
        require(_numberOfTokens <= mintLimit, "Too many tokens for one transaction.");
        require(msg.value >= mintPrice.mul(_numberOfTokens), "Insufficient payment.");

        _mintPizzas(_numberOfTokens);
    }
    function adminBuyPizza(uint _numberOfTokens) external payable onlyOwner {
        _mintPizzas(_numberOfTokens);
    }

    function _mintPizzas(uint _numberOfTokens) internal {
        require(totalSupply.add(_numberOfTokens) <= supplyLimit, "Not enough tokens left.");

        uint256 newId = totalSupply;
        for(uint i = 0; i < _numberOfTokens; i++) {
            newId += 1;
            totalSupply = totalSupply.add(1);

            _safeMint(msg.sender, newId);
            emit PizzaMinted(msg.sender, newId, tokenURI(newId));
        }
    }

    function ReservePizza(uint256 _numberOfTokens) external onlyOwner {
        _mintPizzas(_numberOfTokens);
        emit ReservePizzas(_numberOfTokens);
    }

    /*
        thio function will send contract balance to its share holders
        according to their shares.
    */
    function _withdraw() internal {
        require(address(this).balance > 0, "No balance to withdraw.");
        uint256 _amount = address(this).balance;
        (bool wallet1Success, ) = wallet1Address.call{value: _amount.mul(wallet1Share).div(100)}("");
        (bool wallet2Success, ) = wallet2Address.call{value: _amount.mul(wallet2Share).div(100)}("");
        (bool wallet3Success, ) = wallet3Address.call{value: _amount.mul(wallet3Share).div(100)}("");
        
        require(wallet1Success && wallet2Success && wallet3Success, "Withdrawal failed.");
    }

    /**
     * This function changes the price of the particular style implemented
     * param _styleId: style number
     * param _price: price of style change
    */
    function setStylePrice(uint256 _styleId, uint256 _price) external onlyOwner {
        require(allowedStyles[_styleId], "Style is not allowed.");
        stylePrice[_styleId] = _price;
        emit StylePriceChanged(_styleId, _price);
    }

    /**
     * This function changes the style of the particular token
     * param _namingPrice: The price for naming your pizza
    */
    function setNamingPrice(uint256 _namingPrice) external onlyOwner {
        namingPrice = _namingPrice;
        emit NamingPriceChanged(_namingPrice);
    }

    /**
     * This function changes the style of the particular token
     * param _styleId: style number
     * param _tokenId: tokenId
    */
    function changeStyle(uint256 _styleId, uint256 _tokenId) external payable {
        require(ownerOf(_tokenId) == msg.sender, "Only owner of NFT can change name.");
        require(allowedStyles[_styleId], "Style is not allowed.");
        require(stylePrice[_styleId] >= msg.value, "Price is incorrect");

        tokenStyle[_tokenId] = _styleId;
        emit StyleChanged(_tokenId, _styleId);
    }

    /*
        This function is used to add styles
        param _id: style number
        param _URI: string URI
    */
    function addStyle(uint256 _styleId) external onlyOwner {
        require(_styleId >= 0 && !allowedStyles[_styleId], "Invalid style Id.");
        
        allowedStyles[_styleId] = true;
        emit StyleAdded(_styleId);
    }

    /*
        This function is used to remove styles
        param _id: style number
    */
    function removeStyle(uint256 _styleId) external onlyOwner {
        require(_styleId > 0 && allowedStyles[_styleId], "Invalid style Id.");
        
        allowedStyles[_styleId] = false;
        emit StyleRemoved(_styleId);
    }

     /*
        This function is used to change NFT name
        param _tokenId: tokenId
        param _name: name
    */
    function nameNFT(uint256 _tokenId, string memory _name) external payable {
        require(msg.value == namingPrice, "Incorrect price paid.");
        require(namingAllowed, "Naming is disabled.");
        require(ownerOf(_tokenId) == msg.sender, "Only owner of NFT can change name.");
        require(bytes(_name).length <= charLimit, "Name exceeds characters limit.");
        emit NameChanged(_tokenId, _name);
    }

    /*
        This function will send all contract balance to its contract owner.
    */
    function emergencyWithdraw() external onlyOwner {
        require(address(this).balance > 0, "No funds in smart Contract.");
        (bool success, ) = owner().call{value: address(this).balance}("");
        require(success, "Withdraw Failed.");
    }

    /*
        This function will call _withdraw() function.
        any of the one shareholder can call this function.
    */
    function withdrawAll() external {
        require(msg.sender == wallet1Address || msg.sender == wallet2Address || msg.sender == wallet3Address, "Only share holders can call this method.");
        _withdraw();
    }
}