Ahmad-w2-nodejs

assignments/HackYourTemperature/.gitignore

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+node_modules/
+.env

assignments/HackYourTemperature/app.js

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+import express from "express";
+import keys from "./sources/keys.js";
+
+const app = express();
+app.use(express.json());
+
+app.get("/", (req, res) => {
+res.send("Hello, from backend to frontend!");
+});
+
+app.post("/weather", async (req, res) => {
+const { cityName } = req.body;
+
+if (!cityName) {
+return res.status(400).json({
+    weatherText: "City name is required!",
+});
+}
+
+try {
+const response = await fetch(
+    `https://api.openweathermap.org/data/2.5/weather?q=${cityName}&appid=${keys.API_KEY}&units=metric`,
+);
+
+const data = await response.json();
+
+if (data.cod === "404") {
+    return res.status(404).json({
+    weatherText: "City is not found!",
+    });
+}
+
+res.json({
+    weatherText: `The temperature in ${data.name} is ${data.main.temp}°C.`,
+});
+} catch (error) {
+res.status(500).json({
+    weatherText: "Error fetching weather data.",
+});
+}
+});
+
+export default app;

assignments/HackYourTemperature/babel.config.cjs

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+module.exports = {
+  presets: [
+    [
+      // This is a configuration, here we are telling babel what configuration to use
+      "@babel/preset-env",
+      {
+        targets: {
+          node: "current",
+        },
+      },
+    ],
+  ],
+};

assignments/HackYourTemperature/jest.config.js

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+export default {
+  // Tells jest that any file that has 2 .'s in it and ends with either js or jsx should be run through the babel-jest transformer
+  transform: {
+    "^.+\\.jsx?$": "babel-jest",
+  },
+  // By default our `node_modules` folder is ignored by jest, this tells jest to transform those as well
+  transformIgnorePatterns: [],
+  testEnvironment: "node",
+};

assignments/HackYourTemperature/package.json

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+{
+  "name": "hackyourtemperature",
+  "version": "1.0.0",
+  "description": "",
+  "main": "server.js",
+  "type": "module",
+  "scripts": {
+    "test": "jest",
+    "start": "node server.js",
+    "prettier:check": "prettier --check .",
+    "prettier:write": "prettier --write ."
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "dotenv": "^17.2.3",
+    "express": "^5.1.0",
+    "express-handlebars": "^8.0.3"
+  },
+  "devDependencies": {
+    "@babel/preset-env": "^7.28.5",
+    "babel-jest": "^30.2.0",
+    "husky": "^9.1.7",
+    "jest": "^30.2.0",
+    "lint-staged": "^16.2.6",
+    "supertest": "^7.1.4"
+  }
+}

assignments/HackYourTemperature/server.js

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+import app from "./app.js";
+
+const PORT = process.env.PORT || 3000;
+
+app.listen(PORT, () => {
+console.log(`Server running on http://localhost:${PORT}`);
+});

assignments/HackYourTemperature/sources/keys.js

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+import dotenv from 'dotenv';
+dotenv.config();
+
+const keys = {
+    API_KEY: process.env.API_KEY
+};
+
+export default keys;

assignments/HackYourTemperature/tests/app.test.js

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+import app from "../app.js";
+import supertest from "supertest";
+
+const request = supertest(app);
+
+describe("POST /weather", () => {
+  it("should return 400 if no cityName is provided", async () => {
+    const response = await request.post("/weather").send({});
+    expect(response.status).toBe(400);
+    expect(response.body.weatherText).toBe("City name is required!");
+  });
+
+  it("should return 404 if city is not found", async () => {
+    const response = await request
+      .post("/weather")
+      .send({ cityName: "UnknownCity" });
+    expect(response.status).toBe(404);
+    expect(response.body.weatherText).toBe("City is not found!");
+  });
+
+  it("should return weather data for a valid city", async () => {
+    const response = await request
+      .post("/weather")
+      .send({ cityName: "Amsterdam" });
+    expect(response.status).toBe(200);
+    expect(response.body.weatherText).toContain("Amsterdam");
+  });
+});