Add quotes.controller.js, database.js, quote.model.js, quotes.routes.js

Author: zntb

app.js

@@ -1,12 +1,23 @@
 const express = require("express");
 
+const db = require("./data/database");
+
+const quoteRoutes = require("./routes/quotes.routes");
+
 const app = express();
 
-app.get("/quote", function (req, res, next) {
-  res.json({
-    quote:
-      "As you dive deeper into web development, web development will dive deeper into you!",
+app.use("/quote", quoteRoutes);
+
+app.use(function (error, req, res, next) {
+  res.status(500).res.json({
+    message: "Something went wrong!",
   });
 });
 
-app.listen(3000);
+db.initDb()
+  .then(function () {
+    app.listen(3000);
+  })
+  .catch(function (error) {
+    console.log("Connecting to the database failed!");
+  });

controllers/quotes.controller.js

@@ -0,0 +1,18 @@
+const Quote = require("../models/quote.model");
+
+async function getRandomQuote(req, res, next) {
+  let randomQuote;
+  try {
+    randomQuote = await Quote.getRandomQuote();
+  } catch (error) {
+    return next(error);
+  }
+
+  res.json({
+    quote: randomQuote,
+  });
+}
+
+module.exports = {
+  getRandomQuote: getRandomQuote,
+};

data/database.js

@@ -0,0 +1,23 @@
+const mongodb = require("mongodb");
+
+const MongoClient = mongodb.MongoClient;
+
+let database;
+
+async function initDb() {
+  const client = await MongoClient.connect("mongodb://localhost:27017");
+  database = client.db("first-api");
+}
+
+function getDb() {
+  if (!database) {
+    throw new Error("Database not connected!");
+  }
+
+  return database;
+}
+
+module.exports = {
+  initDb: initDb,
+  getDb: getDb,
+};

models/quote.model.js

@@ -0,0 +1,15 @@
+const db = require("../data/database");
+
+class Quote {
+  static async getRandomQuote() {
+    const quotes = await db.getDb().collection("quotes").find().toArray();
+    const randomQuoteIndex = Math.floor(Math.random() * quotes.length);
+    // [1, 2, 3] => length: 3 => 0.1 * 3 => 0.3 => Math.floor(0.3) => 0
+
+    const randomQuote = quotes[randomQuoteIndex];
+
+    return randomQuote.text;
+  }
+}
+
+module.exports = Quote;