Create RideContract.sol

blockchain_integration/pi_network/PiRide/blockchain/smartContracts/RideContract.sol

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+pragma solidity ^0.8.0;
+
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/token/ERC20/SafeERC20.sol";
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/math/SafeMath.sol";
+
+contract RideContract {
+    using SafeERC20 for address;
+    using SafeMath for uint256;
+
+    // Mapping of ride IDs to ride data
+    mapping (uint256 => Ride) public rides;
+
+    // Mapping of user IDs to user data
+    mapping (address => User) public users;
+
+    // Event emitted when a new ride is created
+    event NewRide(uint256 rideId, address creator, uint256 departureTime, uint256 arrivalTime, uint256 price);
+
+    // Event emitted when a user requests a ride
+    event RideRequested(uint256 rideId, address requester);
+
+    // Event emitted when a ride is accepted
+    event RideAccepted(uint256 rideId, address driver);
+
+    // Event emitted when a ride is completed
+    event RideCompleted(uint256 rideId, address driver, uint256 rating);
+
+    // Struct to represent a ride
+    struct Ride {
+        uint256 id;
+        address creator;
+        uint256 departureTime;
+        uint256 arrivalTime;
+        uint256 price;
+        address driver;
+        uint256 rating;
+        bool isAvailable;
+    }
+
+    // Struct to represent a user
+    struct User {
+        address id;
+        string name;
+        string email;
+        uint256 rating;
+        uint256 balance;
+    }
+
+    // Function to create a new ride
+    function createRide(uint256 departureTime, uint256 arrivalTime, uint256 price) public {
+        uint256 rideId = uint256(keccak256(abi.encodePacked(block.timestamp, msg.sender)));
+        rides[rideId] = Ride(rideId, msg.sender, departureTime, arrivalTime, price, address(0), 0, true);
+        emit NewRide(rideId, msg.sender, departureTime, arrivalTime, price);
+    }
+
+    // Function to request a ride
+    function requestRide(uint256 rideId) public {
+        require(rides[rideId].isAvailable, "Ride is not available");
+        rides[rideId].isAvailable = false;
+        emit RideRequested(rideId, msg.sender);
+    }
+
+    // Function to accept a ride
+    function acceptRide(uint256 rideId) public {
+        require(rides[rideId].isAvailable == false, "Ride is not available");
+        rides[rideId].driver = msg.sender;
+        emit RideAccepted(rideId, msg.sender);
+    }
+
+    // Function to complete a ride
+    function completeRide(uint256 rideId, uint256 rating) public {
+        require(rides[rideId].driver == msg.sender, "Only the driver can complete the ride");
+        rides[rideId].rating = rating;
+        emit RideCompleted(rideId, msg.sender, rating);
+    }
+
+    // Function to get a user's balance
+    function getUserBalance(address user) public view returns (uint256) {
+        return users[user].balance;
+    }
+
+    // Function to transfer tokens to a user
+    function transferTokens(address user, uint256 amount) public {
+        users[user].balance = users[user].balance.add(amount);
+    }
+}