Boiler plate with auth module

boiler plate code using express genrator
added jwt middleware
added db connection
created user model -> need to be renamed as login details
added endpoints for adding user, validate, authenticate

Author: Hitansh159

app.js

@@ -0,0 +1,24 @@
+const express = require('express');
+const path = require('path');
+const logger = require('morgan');
+const cookieParser = require('cookie-parser');
+const cors = require('cors');
+
+const indexRouter = require('./routes/index');
+const usersRouter = require('./routes/users');
+const authRouter = require('./routes/auth');
+
+const app = express();
+
+app.use(cors());
+app.use(logger('dev'));
+app.use(express.json());
+app.use(express.urlencoded({ extended: false }));
+app.use(cookieParser());
+app.use(express.static(path.join(__dirname, 'public')));
+
+app.use('/', indexRouter);
+app.use('/users', usersRouter);
+app.use('/auth', authRouter);
+
+module.exports = app;

bin/www

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+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+let app = require('../app');
+let debug = require('debug')('api:server');
+let http = require('http');
+require("dotenv").config()
+
+
+/**
+ * Get port from environment and store in Express.
+ */
+
+let port = normalizePort(process.env.PORT || '3000');
+app.set('port', port);
+
+/**
+ * Create HTTP server.
+ */
+
+let server = http.createServer(app);
+
+/**
+ * Listen on provided port, on all network interfaces.
+ */
+
+server.listen(port);
+server.on('error', onError);
+server.on('listening', onListening);
+
+
+/**
+ * Normalize a port into a number, string, or false.
+ */
+
+function normalizePort(val) {
+  let port = parseInt(val, 10);
+
+  if (isNaN(port)) {
+    // named pipe
+    return val;
+  }
+
+  if (port >= 0) {
+    // port number
+    return port;
+  }
+
+  return false;
+}
+
+/**
+ * Event listener for HTTP server "error" event.
+ */
+
+function onError(error) {
+  if (error.syscall !== 'listen') {
+    throw error;
+  }
+
+  let bind = typeof port === 'string'
+    ? 'Pipe ' + port
+    : 'Port ' + port;
+
+  // handle specific listen errors with friendly messages
+  switch (error.code) {
+    case 'EACCES':
+      console.error(bind + ' requires elevated privileges');
+      process.exit(1);
+      break;
+    case 'EADDRINUSE':
+      console.error(bind + ' is already in use');
+      process.exit(1);
+      break;
+    default:
+      throw error;
+  }
+}
+
+/**
+ * Event listener for HTTP server "listening" event.
+ */
+
+function onListening() {
+  let addr = server.address();
+  let bind = typeof addr === 'string'
+    ? 'pipe ' + addr
+    : 'port ' + addr.port;
+  debug('Listening on ' + bind);
+}

middleware/auth.js

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+const jwt = require('jsonwebtoken');
+
+function authenticateToken(req, res, next) {
+  const authHeader = req.headers['authorization'];
+  const token = authHeader && authHeader.split(' ')[1];
+  if (token == null) return res.sendStatus(401);
+  jwt.verify(token, process.env.TOKEN_SECRET, (err, user) => {
+
+    if (err) return res.sendStatus(403);
+
+    req.user = user;
+
+    next();
+  })
+}
+
+module.exports = authenticateToken;

models/databaseUtil.js

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+const mongoose = require('mongoose');
+require("dotenv").config();
+
+mongoose.set('strictQuery', true);
+mongoose.connect(`${process.env.DB_URL}`);
+
+
+module.exports = { connector:mongoose };

models/user.js

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+const {connector} = require('./databaseUtil');
+
+const userSchema = {
+  name: {type: String,   required: true},
+  emailId: {type: String, unique: true, required: true},
+  password: {type: String,   required: true},
+  uid: {type: String, unique: true, required: true},
+  userType: {type: String,   required: true} 
+}
+
+const User = new connector.model('User', userSchema);
+ 
+
+async function createUser(name, password, emailId, uid, userType){
+  const user = new User({
+    name: name, 
+    password:password,
+    emailId: emailId,
+    uid: uid,
+    userType: userType
+  });
+  let newUser = {};
+  await user.save().then((savedUser) => {
+    newUser = savedUser ;
+  })
+  .catch(err=>newUser.err=err);
+  return newUser;
+}
+
+async function validateUser(uid, pass){
+  let user = await User.findOne({uid: uid}).catch(err=>console.log(err))
+  if(user){
+    if(user.password==pass)
+      return user
+    return null;
+  }
+  return null;
+}
+
+module.exports = {validateUser:validateUser, createUser:createUser};