Oleksandr week 2 Node JS

.gitignore

@@ -6,5 +6,5 @@ npm-debug.log
 package-lock.json
 yarn-error.log
 *.bkp
-
-week3/prep-exercise/server-demo/
+/assignments/hackyourtemperature/sources/keys.js
+week3/prep-exercise/server-demo/

assignments/hackyourtemperature/__tests__/app.test.js

@@ -0,0 +1,66 @@
+import app from "../app.js";
+import supertest from "supertest";
+import { API_KEY } from "../sources/keys.js";
+import nock from "nock";
+const request = supertest(app);
+
+describe("POST /", (done) => {
+  afterEach(() => {
+    nock.cleanAll();
+  });
+
+  it("App returns 200 status on the main page.", async () => {
+    await request
+      .get("/")
+      .expect(200)
+      .then((res) => {
+        expect(res.text).toBe("hello from backend to frontend!");
+      });
+  });
+
+  it("App returns 200 status when the city name is correct.", async () => {
+    const mockCity = "Amsterdam";
+    const mockTemp = 15;
+
+    nock("https://api.openweathermap.org")
+      .get("/data/2.5/weather")
+      .query({ q: mockCity, APPID: API_KEY, units: "metric" })
+      .reply(200, { name: "Amsterdam", main: { temp: 15 } });
+
+    const res = await request
+      .post("/weather")
+      .send({ cityName: "Amsterdam" })
+      .expect(200);
+
+    expect(res.body).toEqual({
+      Amsterdam: 15,
+    });
+  });
+
+  it("App returns 400 status when the city name is missing.", async () => {
+    await request
+      .post("/weather")
+      .send()
+      .set("Content-type", "application/json")
+      .set("Accept", "application/json")
+      .expect(400, {
+        weatherText: "City name is required!",
+      });
+  });
+
+  it("App returns 404 status when the city name is gibberish.", async () => {
+    nock("https://api.openweathermap.org")
+      .get("/data/2.5/weather")
+      .query({ q: "abcdefg", APPID: API_KEY, units: "metric" })
+      .reply(404, { message: "city not found" });
+
+    await request
+      .post("/weather")
+      .send({ cityName: "abcdefg" })
+      .set("Content-type", "application/json")
+      .set("Accept", "application/json")
+      .expect(404, {
+        weatherText: "City is not found!",
+      });
+  });
+});

assignments/hackyourtemperature/app.js

@@ -0,0 +1,33 @@
+import express from "express";
+import fetch from "node-fetch";
+import { API_KEY } from "./sources/keys.js";
+
+const app = express();
+
+app.use(express.json());
+const baseUrl = "https://api.openweathermap.org/data/2.5/weather";
+
+app.get("/", (req, res) => {
+  res.send("hello from backend to frontend!");
+});
+
+app.post("/weather", async (req, res) => {
+  if (!req.body.cityName) {
+    return res.status(400).send({ weatherText: "City name is required!" });
+  }
+
+  const cityName = req.body.cityName;
+  const url = `${baseUrl}?q=${cityName}&APPID=${API_KEY}&units=metric`;
+
+  const response = await fetch(url);
+
+  if (!response.ok) {
+    return res.status(404).send({ weatherText: "City is not found!" });
+  }
+
+  const data = await response.json();
+
+  res.status(200).send({ [data.name]: data.main.temp });
+});
+
+export default app;

assignments/hackyourtemperature/babel.config.cjs

@@ -0,0 +1,13 @@
+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

@@ -0,0 +1,8 @@
+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

@@ -0,0 +1,27 @@
+{
+  "name": "node",
+  "version": "1.0.0",
+  "description": "> If you are following the HackYourFuture curriculum we recommend you to start with module 1: [HTML/CSS/GIT](https://github.com/HackYourFuture/HTML-CSS). To get a complete overview of the HackYourFuture curriculum first, click [here](https://github.com/HackYourFuture/curriculum).",
+  "main": "index.js",
+  "type": "module",
+  "scripts": {
+    "test": "jest",
+    "start": "nodemon server.js"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.21.0",
+    "express-handlebars": "^8.0.1",
+    "nock": "^13.5.5",
+    "node-fetch": "^3.3.2",
+    "nodemon": "^3.1.7"
+  },
+  "devDependencies": {
+    "@babel/preset-env": "^7.25.4",
+    "babel-jest": "^29.7.0",
+    "jest": "^29.7.0",
+    "supertest": "^7.0.0"
+  }
+}

assignments/hackyourtemperature/server.js

@@ -0,0 +1,7 @@
+import app from "./app.js";
+
+const PORT = 3004;
+
+app.listen(PORT, () => {
+  console.log(`Server is running on port ${PORT}`);
+});