Majd hussein w2 node

assignments/hackyourtemperature/__tests__/app.test.js

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+import supertest from "supertest";
+import app from "../app.js";
+
+const request = supertest(app);
+
+describe("POST /weather", () => {
+  it("case1: (Valid city name) >>> should return weather data", async () => {
+    const response = await request
+      .post("/weather")
+      .send({ cityName: "London" });
+
+    expect(response.status).toBe(200);
+  });
+
+  it("Case2: (Inavalid city name ) >>>  should return 500 error", async () => {
+    const response = await request
+      .post("/weather")
+      .send({ cityName: "Incorrect_CityName" });
+
+    expect(response.status).toBe(500);
+    expect(response.body).toHaveProperty("error", "City is not found");
+  });
+
+  it("Case3: (Empty City Name) should return 500 error", async () => {
+    const response = await request.post("/weather").send({});
+    expect(response.status).toBe(500);
+    expect(response.body).toHaveProperty("error", "City is not found");
+  });
+});

assignments/hackyourtemperature/app.js

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+import express from "express";
+import keys from "./sources/keys.js"; // to access it use keys.API_KEY
+import fetch from "node-fetch";
+const app = express();
+
+export default app;
+
+app.use(express.json());
+
+//GET request that sends the message [hello from backend to frontend!] to the client
+app.get("/", (req, res) => {
+  res.send("Hello From Backend to Frontend");
+});
+
+// --------------5.1 Adding a POST request----------------
+app.post("/weather", (req, res) => {
+  const { cityName } = req.body;
+  const cityWeatherUrl = `http://api.openweathermap.org/data/2.5/forecast?q=${cityName}&appid=${keys.API_KEY}`;
+
+  fetchWeather(cityWeatherUrl);
+
+  async function fetchWeather(URL) {
+    try {
+      const response = await fetch(URL);
+      const data = await response.json();
+
+      if (data.cod === "404") {
+        throw new Error("City not found");
+      }
+
+      const tempratureInCelsius = data.list[0].main.temp - 273.15; // Temperature in  Celsius
+
+      res.json({
+        weatherText: `Temperature in ${cityName}: ${tempratureInCelsius.toFixed(
+          2
+        )} °C`,
+      });
+    } catch (error) {
+      res.status(500).json({ error: "City is not found" });
+    }
+  }
+});
+
+//

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: [],
+};

assignments/hackyourtemperature/package.json

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+{
+  "name": "hackyourtemperature",
+  "type": "module",
+  "version": "1.0.0",
+  "description": "",
+  "main": "server.js",
+  "scripts": {
+    "test": "jest",
+    "start": "node server.js",
+    "dev": "nodemon server.js"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "@babel/preset-env": "^7.28.5",
+    "babel-jest": "^30.2.0",
+    "express": "^5.1.0",
+    "jest": "^30.2.0",
+    "nodemon": "^3.1.10",
+    "supertest": "^7.1.4"
+  },
+  "dependencies": {
+    "dotenv": "^17.2.3",
+    "express-handlebars": "^8.0.3",
+    "node-fetch": "^3.3.2"
+  }
+}

assignments/hackyourtemperature/server.js

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+import app from "./app.js";
+
+app.listen(3000, () => {
+  console.log("Server on Port 3000 is running");
+});

assignments/hackyourtemperature/sources/keys.js

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+export default { API_KEY: "d63cf1893cfbd168dfb340b341a8c03e" };