Glib-w2-NodeJS

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 weather if cityName is provided", async () => {
+    const cityName = "Amsterdam";
+
+    const response = await request
+      .post("/weather")
+      .send({ cityName });
+
+    expect(response.status).toBe(200);
+    expect(response.body.weatherText).toContain("Temperature in Amsterdam");
+  });
+
+  it("should return error if cityName isn't provided", async () => {
+    const response = await request
+      .post("/weather")
+      .send({});
+
+    expect(response.status).toBe(400);
+    expect(response.body.error).toBe("cityName is required");
+  });
+
+  it("should return error if city is not found", async () => {
+    const cityName = "Balaboobooboo";
+
+    const response = await request
+      .post("/weather")
+      .send({ cityName });
+
+    expect(response.status).toBe(200);
+    expect(response.body.weatherText).toBe("City not found!");
+  });
+});

assignments/hackyourtemperature/app.js

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+import express from 'express';
+import { keys } from './sources/keys.js';
+
+export 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({ error: "cityName 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 !== 200) return res.json({ weatherText: 'City not found!' });
+
+    const temperature = Math.floor(data.main.temp);
+    res.json({ weatherText: `Temperature in ${cityName} is ${temperature}°C` });
+  } catch (error) {
+    res.status(500).json({ error: 'Server-side error.' });
+  }
+});

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",
+  "version": "1.0.0",
+  "main": "server.js",
+  "type": "module",
+  "scripts": {
+    "test": "jest",
+    "start": "nodemon server.js"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.21.2",
+    "express-handlebars": "^8.0.1"
+  },
+  "devDependencies": {
+    "@babel/preset-env": "^7.26.9",
+    "babel-jest": "^29.7.0",
+    "jest": "^29.7.0",
+    "nodemon": "^3.1.9",
+    "supertest": "^7.0.0"
+  },
+  "description": ""
+}

assignments/hackyourtemperature/server.js

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+import { app } from './app.js';
+
+const PORT = 3000;
+
+app.listen(PORT, () => console.log(`Server is running on port ${PORT}...`));

assignments/hackyourtemperature/sources/keys.js

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+export const keys = {
+  API_KEY: 'afc0f7157bda937505e237c68802afa5'
+}