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villa.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "@openzeppelin/contracts@4.9.3/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts@4.9.3/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts@4.9.3/token/ERC721/extensions/ERC721Burnable.sol";
import "@openzeppelin/contracts@4.9.3/access/Ownable.sol";
import "@openzeppelin/contracts@4.9.3/utils/Counters.sol";

contract Villa is ERC721, ERC721URIStorage, ERC721Burnable, Ownable {
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIdCounter;
    string villa_uid;
    string villa_name;
    uint256 villa_buyPrice;
    uint256 villa_sellPrice;
    string villa_uri;
    uint256 villa_max_nft_count;
    uint256 villa_minted_nft;
    mapping(address => bool) public admins;
    constructor(
        address[] memory _admins,
        string memory _name, 
        string memory _symbol) ERC721(_name, _symbol) {
        // set msg.sender as admin
        require(!admins[msg.sender], "Duplicate admin");
        admins[msg.sender] = true;
        for (uint256 i = 0; i < _admins.length; i++) {
            require(!admins[_admins[i]], "Duplicate admin");
            admins[_admins[i]] = true;
        }
    }
    modifier onlyAdmin() {
        require(admins[msg.sender], "admin only");
        _;
    }
    function initializeVilla(
        string memory _uid,
        string memory _name, 
        string memory _uri,
        uint256 _buyPrice, 
        uint256 _sellPrice, 
        uint256 _max_nft_count
    ) public onlyOwner {
       villa_uid = _uid; 
       villa_name = _name; 
       villa_uri = _uri; 
       villa_max_nft_count = _max_nft_count; 
       villa_buyPrice = _buyPrice; 
       villa_sellPrice = _sellPrice; 
       villa_minted_nft = 0;
    }

    function safeMint(address to, string memory uri) public onlyOwner {
        uint256 tokenId = _tokenIdCounter.current();
        _tokenIdCounter.increment();
        _safeMint(to, tokenId);
        _setTokenURI(tokenId, uri);
    }

    function addAdmin(address _new_admin) public onlyOwner {
        require(!admins[_new_admin], "already admin");
        admins[_new_admin] = true;
    }
    
    // The following functions are overrides required by Solidity.

    function _burn(uint256 tokenId) internal override(ERC721, ERC721URIStorage) {
        super._burn(tokenId);
    }

    function tokenURI(uint256 tokenId)
        public
        view
        override(ERC721, ERC721URIStorage)
        returns (string memory)
    {
        return super.tokenURI(tokenId);
    }

    function supportsInterface(bytes4 interfaceId)
        public
        view
        override(ERC721, ERC721URIStorage)
        returns (bool)
    {
        return super.supportsInterface(interfaceId);
    }
}