Описание изменений

backend/contracts/AccessToken.sol

@@ -1,61 +0,0 @@
-// SPDX-License-Identifier: MIT
-pragma solidity ^0.8.20;
-
-import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
-import "@openzeppelin/contracts/access/Ownable.sol";
-import "@openzeppelin/contracts/utils/Counters.sol";
-
-contract AccessToken is ERC721, Ownable {
-    using Counters for Counters.Counter;
-    Counters.Counter private _tokenIds;
-
-    // Роли для токенов
-    enum Role { USER, ADMIN }
-    
-    // Маппинг токен ID => роль
-    mapping(uint256 => Role) public tokenRoles;
-    
-    // Маппинг адрес => активный токен
-    mapping(address => uint256) public activeTokens;
-
-    constructor() ERC721("DApp Access Token", "DAT") Ownable() {
-        // Инициализация владельца происходит в Ownable()
-    }
-
-    // Создание нового токена доступа
-    function mintAccessToken(address to, Role role) public onlyOwner {
-        require(role == Role.USER || role == Role.ADMIN, "Invalid role");
-        
-        _tokenIds.increment();
-        uint256 newTokenId = _tokenIds.current();
-        
-        _safeMint(to, newTokenId);
-        tokenRoles[newTokenId] = role;
-        activeTokens[to] = newTokenId;
-    }
-
-    // Проверка роли по адресу
-    function checkRole(address user) public view returns (Role) {
-        uint256 tokenId = activeTokens[user];
-        require(tokenId != 0, "No active token");
-        require(ownerOf(tokenId) == user, "Token not owned");
-        return tokenRoles[tokenId];
-    }
-
-    // Отзыв токена
-    function revokeToken(uint256 tokenId) public onlyOwner {
-        address tokenOwner = ownerOf(tokenId);
-        activeTokens[tokenOwner] = 0;
-        _burn(tokenId);
-    }
-
-    // Передача токена запрещена
-    function _beforeTokenTransfer(
-        address from,
-        address to,
-        uint256 tokenId
-    ) internal override {
-        require(from == address(0) || to == address(0), "Token transfer not allowed");
-        super._beforeTokenTransfer(from, to, tokenId);
-    }
-} 

backend/contracts/MyContract.sol

@@ -1,38 +0,0 @@
-// SPDX-License-Identifier: MIT
-pragma solidity ^0.8.0;
-
-import "@openzeppelin/contracts/access/Ownable.sol";
-import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
-
-contract MyContract is Ownable, ReentrancyGuard {
-    // Явно объявляем функцию owner
-    function owner() public view override returns (address) {
-        return super.owner();
-    }
-
-    uint256 public price;
-    
-    event Purchase(address buyer, uint256 amount);
-
-    constructor() {
-        price = 0.01 ether; // Начальная цена 0.01 ETH
-    }
-
-    function setPrice(uint256 newPrice) public onlyOwner {
-        price = newPrice;
-    }
-
-    function getPrice() public view returns (uint256) {
-        return price;
-    }
-
-    function purchase(uint256 amount) public payable nonReentrant {
-        require(msg.value == price * amount, "Incorrect payment amount");
-        emit Purchase(msg.sender, amount);
-    }
-
-    function withdraw() public onlyOwner nonReentrant {
-        (bool success, ) = owner().call{value: address(this).balance}("");
-        require(success, "Transfer failed");
-    }
-}