Assignments week 1 Konjit

assignments/hackyourtemperature/.gitignore

@@ -0,0 +1,2 @@
+node_modules
+.env

assignments/hackyourtemperature/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "hackyourtemperature",
+  "version": "1.0.0",
+  "type": "module",
+  "main": "server.js",
+  "scripts": {
+    "start": "nodemon server.js",
+    "dev": "node --watch server"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "express": "^4.21.2",
+    "express-handlebars": "^8.0.1",
+    "node-fetch": "^3.3.2"
+  }
+}

assignments/hackyourtemperature/server.js

@@ -0,0 +1,21 @@
+import express from "express";
+
+const PORT = 3000;
+
+const app = express();
+app.use(express.json())
+
+
+app.get('/', (req, res)=>{
+  res.status(200).send("hello from backend to frontend!");
+})
+
+app.post('/weather', (req, res) => {
+  const cityName = req.body.cityName;
+  if(!cityName) {
+    return res.status(404).json({message: "City name is required."})
+  }
+  res.status(200).json({cityName: cityName});
+})
+
+app.listen(PORT);

week2/prep-exercises/1-blog-API/package.json

@@ -2,10 +2,11 @@
   "name": "1-blog-api",
   "version": "1.0.0",
   "description": "",
+  "type": "module",
   "main": "server.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1",
-    "start": "node server.js"
+    "start": "node server.js",
+    "dev": "node --watch server"
   },
   "author": "",
   "license": "ISC",

week2/prep-exercises/1-blog-API/server.js

@@ -1,10 +1,114 @@
-const express = require('express')
+import express from "express";
+import path from "path";
+import fs from "fs";
+
 const app = express();
-
-
-// YOUR CODE GOES IN HERE
-app.get('/', function (req, res) {
-  res.send('Hello World')
-})
-
-app.listen(3000)
+
+const blogsDir = path.resolve("blogs");
+
+app.use(express.json());
+
+app.get("/", function (req, res) {
+  res.send("Hello World");
+});
+
+// Submit a blog
+app.post("/blogs", (req, res) => {
+  const { title, content } = req.body;
+
+  if (!title || !content) {
+    return res.status(400).send({ message: "Content is required." });
+  }
+  const filePath = path.join(blogsDir, title);
+  const submitBlog = () => {
+    fs.writeFileSync(filePath, content);
+    res.status(200).send({ message: "Blog is created successfully." });
+  };
+
+  handleFileOperation(submitBlog, res, filePath, content);
+});
+
+// Update a blog
+app.put("/posts/:title", (req, res) => {
+  const { content } = req.body;
+  const title = req.params.title;
+
+  if (!title || !content) {
+    return res.status(400).send({ message: "Content is required." });
+  }
+
+  const filePath = path.join(blogsDir, title);
+  checkFileExists(filePath, res);
+
+  const updateBlog = () => {
+    fs.writeFileSync(filePath, content);
+    res.status(201).send({ message: "Blog is updated successfully" });
+  };
+
+  handleFileOperation(updateBlog, res, filePath, content);
+});
+
+// Delete a blog
+app.delete("/blogs/:title", (req, res) => {
+  const title = req.params.title;
+
+  const filePath = path.join(blogsDir, title);
+
+  checkFileExists(filePath, res);
+
+  const deleteBlog = () => {
+    fs.unlinkSync(filePath);
+    res.status(200).send({ message: "Blog is deleted successfully." });
+  };
+  handleFileOperation(deleteBlog, res, filePath);
+});
+
+// Read a blog
+app.get("/blogs/:title", (req, res) => {
+  const title = req.params.title;
+  const filePath = path.join(blogsDir, title);
+
+  checkFileExists(filePath, res);
+
+  const encoding = "utf-8";
+  const readBlog = () => {
+    const post = fs.readFileSync(filePath, encoding);
+    res.setHeader("Content-Type", "text/plain");
+    res.status(200).send(post);
+  };
+
+  handleFileOperation(readBlog, res, filePath, encoding);
+});
+
+// BONUS: Get all blogs
+app.get("/blogs/", (req, res) => {
+  const blogs = fs.readdirSync(blogsDir);
+  const getBlogs = () => {
+    if (!blogs) {
+      res.status(500).send({ message: "No blog is found." });
+    }
+    const blogTitles = blogs.map((blog) => ({ title: blog }));
+    res.status(200).send(blogTitles);
+  };
+
+  handleFileOperation(getBlogs, res, blogs);
+});
+
+/** A helper function that checks if a file operation is a success or failure. */
+
+const handleFileOperation = (operation, ...args) => {
+  try {
+    return operation(...args);
+  } catch (err) {
+    res.status(500).send({ message: `Error occurred while ${msg}` });
+  }
+};
+
+/*Checks if a specified file exists or not. */
+const checkFileExists = (filePath, res) => {
+  if (!fs.existsSync(filePath)) {
+    return res.status(404).send("This blog does not exist.");
+  }
+};
+
+app.listen(3000);