Update repo

Author: davidtan-tw

.vscode/launch.json

@@ -0,0 +1,14 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "type": "node",
+      "request": "launch",
+      "name": "Launch Program",
+      "program": "${workspaceFolder}/hello_crud.js"
+    }
+  ]
+}

express_basic_example_1.js

@@ -0,0 +1,26 @@
+const express = require("express");
+const app = express();
+
+/* GET books listing. */
+app.get("/books", function(req, res) {
+  res.send("You requested a list of books....");
+});
+
+/* GET a specific book with ID */
+app.get("/books/:bookId", function(req, res) {
+  res.send(`You request information on book ${req.params.bookId}`);
+});
+
+/* GET users listing. */
+app.get("/users", function(req, res) {
+  res.send("You requested a list of users....");
+});
+
+/* GET a specific user with ID */
+app.get("/users/:userId", function(req, res) {
+  res.send(`You request information on user ${req.params.userId}`);
+});
+
+const server = app.listen(3000, function() {
+  console.log("Application started....");
+});

route_example_2.js renamed to express_basic_example_2.js

@@ -0,0 +1,37 @@
+const express = require("express");
+var bodyParser = require("body-parser");
+const app = express();
+const PORT = 3000;
+
+app.use(bodyParser.json());
+
+const books = [
+  { id: "1", name: "harry potter" },
+  { id: "2", name: "a song of ice and fire" },
+  { id: "3", name: "lord of the rings" }
+];
+
+app.get("/books", function(req, res) {
+  res.status(200);
+  res.send(books);
+});
+
+app.get("/books/:id", function(req, res) {
+  const bookId = req.params.id;
+  const requestedBook = books.filter(book => book.id === bookId);
+  res.status(200);
+  res.send(requestedBook);
+});
+
+app.post("/books", function(req, res) {
+  console.log(req.body);
+  const bookName = req.body.name;
+  books.push({ id: books.length + 1, name: bookName });
+
+  res.status(200);
+  res.send(books);
+});
+
+const server = app.listen(PORT, function() {
+  console.log(`You're listening to the smooth sounds of port ${PORT}...`);
+});

express_router_example.js renamed to express_basic_example_with_router.js

@@ -0,0 +1,43 @@
+const express = require("express");
+var bodyParser = require("body-parser");
+const app = express();
+const PORT = 3000;
+
+app.use(bodyParser.json());
+
+const books = [
+  { id: "1", name: "harry potter" },
+  { id: "2", name: "a song of ice and fire" },
+  { id: "3", name: "lord of the rings" }
+];
+
+app.get("/books", function(req, res) {
+  res.send(books);
+});
+
+app.put("/books/:id", function(req, res) {
+  // 1. get book to be updated
+  console.log(req.params.id);
+  let booksWithMatchingId = books.filter(book => book.id === req.params.id);
+  let bookToBeUpdated = booksWithMatchingId[0];
+
+  // 2. update book
+  bookToBeUpdated["name"] = req.body.name;
+
+  // 3. send response with updated book
+  res.status(200);
+  res.send(bookToBeUpdated);
+});
+
+app.delete("/books/:id", function(req, res) {
+  // 1. filter out the book which match the id
+  let remainingBooks = books.filter(book => book.id !== req.params.id);
+
+  // 2. send response with remaining books
+  res.status(200);
+  res.send(remainingBooks);
+});
+
+const server = app.listen(PORT, function() {
+  console.log(`You're listening to the smooth sounds of port ${PORT}...`);
+});

hello_get_and_post.js

@@ -1,5 +1,6 @@
 const express = require("express");
 const app = express();
+const PORT = 3000;
 
 app.get("/", function(req, res) {
   res.send("Hello World!");
@@ -13,6 +14,6 @@ app.put("/", function(req, res) {
   res.send("Got a PUT request");
 });
 
-const server = app.listen(3000, function() {
-  console.log("Application started....");
+const server = app.listen(PORT, function() {
+  console.log(`You're listening to the smooth sounds of port ${PORT}...`);
 });