Create UserRegistry.sol

pi-nexus-blockchain/contracts/UserRegistry.sol

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+pragma solidity ^0.8.0;
+
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/math/SafeMath.sol";
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/utils/Address.sol";
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/access/Ownable.sol";
+import "./IdentityVerification.sol";
+
+contract UserRegistry {
+    using SafeMath for uint256;
+    using Address for address;
+
+    // Mapping of user addresses to their corresponding user data
+    mapping (address => UserData) public userData;
+
+    // Struct to represent user data
+    struct UserData {
+        string name;
+        string email;
+        uint256 balance;
+        bool isVerified;
+    }
+
+    // Event emitted when a new user is registered
+    event UserRegistered(address indexed user, string name, string email);
+
+    // Event emitted when a user's data is updated
+    event UserDataUpdated(address indexed user, string name, string email);
+
+    // Modifier to restrict access to only the owner of the contract
+    modifier onlyOwner() {
+        require(msg.sender == owner, "Only the owner can call this function");
+        _;
+    }
+
+    // Constructor function to initialize the contract
+    constructor() public {
+        owner = msg.sender;
+    }
+
+    // Function to register a new user
+    function registerUser(address user, string memory name, string memory email) public {
+        // Create a new user data struct
+        UserData storage userDataStorage = userData[user];
+        userDataStorage.name = name;
+        userDataStorage.email = email;
+        userDataStorage.balance = 0;
+        userDataStorage.isVerified = false;
+
+        // Emit the UserRegistered event
+        emit UserRegistered(user, name, email);
+    }
+
+    // Function to update a user's data
+    function updateUserData(address user, string memory name, string memory email) public {
+        // Update the user data struct
+        userDataStorage.name = name;
+        userDataStorage.email = email;
+
+        // Emit the UserDataUpdated event
+        emit UserDataUpdated(user, name, email);
+    }
+
+    // Function to get a user's data
+    function getUserData(address user) public view returns (string memory, string memory, uint256, bool) {
+        UserData storage userDataStorage = userData[user];
+        return (userDataStorage.name, userDataStorage.email, userDataStorage.balance, userDataStorage.isVerified);
+    }
+
+    // Function to update a user's balance
+    function updateBalance(address user, uint256 amount) public {
+        UserData storage userDataStorage = userData[user];
+        userDataStorage.balance = userDataStorage.balance.add(amount);
+    }
+
+    // Function to verify a user's identity using the IdentityVerification contract
+    function verifyIdentity(address user) public {
+        IdentityVerification identityVerification = IdentityVerification(address);
+        require(identityVerification.getVerificationStatus(user), "User's identity is not verified");
+        userData[user].isVerified = true;
+    }
+}
+