first commit

artifacts/contracts/smart.sol/FoodDeliveryContract.dbg.json

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+{
+  "_format": "hh-sol-dbg-1",
+  "buildInfo": "../../build-info/4c768d81f375d9931f76c2b18a5a29bd.json"
+}

cache/solidity-files-cache.json

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+{
+  "_format": "hh-sol-cache-2",
+  "files": {
+    "/Users/adithtomalex/Desktop/SmartBites/contracts/smart.sol": {
+      "lastModificationDate": 1680395093289,
+      "contentHash": "c305a34a1c29a0b348a924f63e946c81",
+      "sourceName": "contracts/smart.sol",
+      "solcConfig": {
+        "version": "0.8.9",
+        "settings": {
+          "optimizer": {
+            "enabled": false,
+            "runs": 200
+          },
+          "outputSelection": {
+            "*": {
+              "*": [
+                "abi",
+                "evm.bytecode",
+                "evm.deployedBytecode",
+                "evm.methodIdentifiers",
+                "metadata"
+              ],
+              "": [
+                "ast"
+              ]
+            }
+          }
+        }
+      },
+      "imports": [],
+      "versionPragmas": [
+        ">=0.7.0 <0.9.0"
+      ],
+      "artifacts": [
+        "FoodDeliveryContract"
+      ]
+    }
+  }
+}

contracts/smart.sol

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+pragma solidity >=0.7.0 <0.9.0;
+
+contract FoodDeliveryContract {
+    address public user;
+    address public restaurant;
+    address public driver;
+    uint public foodFee;
+    uint public deliveryFee;
+    uint public expirationTime;
+    bool public isCanceled;
+
+    mapping (address => bool) public registeredDrivers;
+    mapping (address => uint) public payments;
+
+    constructor(address _restaurant, uint _foodFee, uint _deliveryFee, uint _expirationTime) payable {
+        user = msg.sender;
+        restaurant = _restaurant;
+        foodFee = _foodFee;
+        deliveryFee = _deliveryFee;
+        expirationTime = block.timestamp + _expirationTime;
+    }
+
+    function registerAsDriver() public {
+        registeredDrivers[msg.sender] = true;
+    }
+
+    function setDeliveryFee(uint _deliveryFee) public {
+        require(msg.sender == user, "Only the user can set the delivery fee");
+        deliveryFee = _deliveryFee;
+    }
+
+    function nullifyContract() public {
+        require(msg.sender == user, "Only the user can nullify the contract");
+        require(block.timestamp > expirationTime, "Contract has expired");
+        isCanceled = true;
+    }
+
+    function scanQRCode() public {
+        require(msg.sender == driver, "Only the driver can scan the QR code");
+        require(!isCanceled, "Contract has been nullified");
+        uint totalPayment = foodFee + deliveryFee;
+        require(address(this).balance >= totalPayment, "Not enough funds to complete the payment");
+
+        // Send payment to the restaurant
+        (bool success, ) = restaurant.call{value: foodFee}("");
+        require(success, "Failed to send payment to the restaurant");
+
+        // Send payment to the driver
+        (success, ) = driver.call{value: deliveryFee}("");
+        require(success, "Failed to send payment to the driver");
+
+        // Send any remaining funds back to the user
+        uint remainingPayment = address(this).balance;
+        if (remainingPayment > 0) {
+            (success, ) = user.call{value: remainingPayment}("");
+            require(success, "Failed to send remaining payment back to the user");
+        }
+    }
+
+    receive() external payable {
+        require(msg.sender == user, "Only the user can send funds to this contract");
+        payments[msg.sender] += msg.value;
+    }
+}

hardhat.config.js

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+require("@nomicfoundation/hardhat-toolbox");
+
+// Go to https://alchemy.com, sign up, create a new App in
+// its dashboard, and replace "KEY" with its key
+const ALCHEMY_API_KEY = "1C3bPKmFmqhV3qV4_iPm2zRT5RNT-gXD";
+
+// Replace this private key with your Sepolia account private key
+// To export your private key from Metamask, open Metamask and
+// go to Account Details > Export Private Key
+// Beware: NEVER put real Ether into testing accounts
+const SEPOLIA_PRIVATE_KEY = "84fe095f234ebb5c5570109eb1d8650a18cbabaa6ca9a60c2e19b218a03352e8";
+
+module.exports = {
+  solidity: "0.8.9",
+  networks: {
+    sepolia: {
+      url: "https://eth-sepolia.g.alchemy.com/v2/1C3bPKmFmqhV3qV4_iPm2zRT5RNT-gXD",
+      accounts: [SEPOLIA_PRIVATE_KEY]
+    }
+  }
+};