app.js

//jshint esversion:6 --- Blog Website - database - Login
require('dotenv').config();
const express = require("express");
const bodyParser = require("body-parser");
const ejs = require("ejs");
const mongoose = require('mongoose');
const session = require('express-session');
const passport = require("passport");
const passportLocalMongoose = require("passport-local-mongoose");
const GoogleStrategy = require('passport-google-oauth20').Strategy;
const findOrCreate = require('mongoose-findorcreate');

const homeStartingContent = "This is a sample text for home content. This is a blog website where you can find a lot of rejenuvating places to roam around, and some hot & latest tech stuff too. So dont miss to check our latest blogs and you can even publish your own too. So get others know the most thrilling piece of software you used recently. Morever, try mentioning about some adventure trips you had in your mind, so that other readers can also be a part of the same. Now I've get tired of tyinpng so Goood bYee.. ";
const aboutContent = "Hac habitasse platea dictumst vestibulum rhoncus est pellentesque. Dictumst vestibulum rhoncus est pellentesque elit ullamcorper. Non diam phasellus vestibulum lorem sed. Platea dictumst quisque sagittis purus sit. Egestas sed sed risus pretium quam vulputate dignissim suspendisse. Mauris in aliquam sem fringilla. Semper risus in hendrerit gravida rutrum quisque non tellus orci. Amet massa vitae tortor condimentum lacinia quis vel eros. Enim ut tellus elementum sagittis vitae. Mauris ultrices eros in cursus turpis massa tincidunt dui.";
const contactContent = "This is the contact content. Go to NIT Hamirpur for any more details. Arcu dui vivamus arcu felis bibendum. Consectetur adipiscing elit duis tristique. Risus viverra adipiscing at in tellus integer feugiat. Sapien nec sagittis aliquam malesuada bibendum arcu vitae. Consequat interdum varius sit amet mattis. Iaculis nunc sed augue lacus. Interdum posuere lorem ipsum dolor sit amet consectetur adipiscing elit. Pulvinar elementum integer enim neque. Ultrices gravida dictum fusce ut placerat orci nulla. Mauris in aliquam sem fringilla ut morbi tincidunt. Tortor posuere ac ut consequat semper viverra nam libero.";

const app = express();

app.set('view engine', 'ejs');

app.use(bodyParser.urlencoded({extended: true}));
app.use(express.static("public"));

app.use(session({
  secret: "Our little secret.",
  resave: false,
  saveUninitialized: false
}));

app.use(passport.initialize());
app.use(passport.session());

// Course Modal Schema
const userSchema = new mongoose.Schema({
  email: String,
  password: String,
  googleId: String
});
userSchema.plugin(passportLocalMongoose); // this pluginn hashes the password  
userSchema.plugin(findOrCreate);
// Student Modal Schema
const postSchema = new mongoose.Schema({
  title: String,
  content: String
});


// Creating model objects
const User = mongoose.model('user', userSchema);
const Post = mongoose.model('post', postSchema);
mongoose.connect('mongodb://localhost:27017/blog01DB',
{  
   useNewUrlParser: true,  
   useUnifiedTopology: true,  
   useFindAndModify: false
});
mongoose.set("useCreateIndex", true);


passport.use(User.createStrategy());

passport.serializeUser(function(user, done) {
  done(null, user.id);
});

passport.deserializeUser(function(id, done) {
  User.findById(id, function(err, user) {
    done(err, user);
  });
});

passport.use(new GoogleStrategy({
    clientID: process.env.CLIENT_ID,
    clientSecret: process.env.CLIENT_SECRET,
    callbackURL: "http://localhost:3000/auth/google/secrets",
    userProfileURL: "https://www.googleapis.com/oauth2/v3/userinfo"
  },
  function(accessToken, refreshToken, profile, cb) {
    console.log(profile);

    User.findOrCreate({ googleId: profile.id }, function (err, user) {
      return cb(err, user);
    });
  }
));

app.get("/", function(req, res){

  Post.find({}, function(err, posts){
    res.render("home", {
      startingContent: homeStartingContent,
      posts: posts
      });
  });
});
app.get("/auth/google",
  passport.authenticate('google', { scope: ["profile"] })
);

app.get("/auth/google/secrets",
  passport.authenticate('google', { failureRedirect: "/login" }),
  function(req, res) {
    // Successful authentication, redirect to secrets.
    res.redirect("/compose");
  });
app.get("/login", function(req, res){
  res.render("login");
});

app.get("/register", function(req, res){
  res.render("register");
});
app.get("/compose", function(req, res){
  if (req.isAuthenticated()){
    res.render("compose");
  } else {
    res.redirect("/login");
  }
});

app.get("/logout", function(req, res){
  req.logout();
  res.redirect("/");
});


app.post("/compose", function(req, res){
  const post = new Post({
    title: req.body.postTitle,
    content: req.body.postBody
  });


  post.save(function(err){
    if (!err){
        res.redirect("/");
    }
  });
});

app.get("/posts/:postId", function(req, res){

const requestedPostId = req.params.postId;

  Post.findOne({_id: requestedPostId}, function(err, post){
    res.render("post", {
      title: post.title,
      content: post.content
    });
  });

});

app.post("/register", function(req, res){
  User.register({username: req.body.username}, req.body.password, function(err, user){
    if (err) {
      console.log(err);
      res.redirect("/register");
    } else {
      passport.authenticate("local")(req, res, function(){
        res.redirect("/");
      });
    }
  });

});
app.post("/login", function(req, res){
  const user = new User({
    username: req.body.username,
    password: req.body.password
  });

  req.login(user, function(err){
    if (err) {
      console.log(err);
    } else {
      passport.authenticate("local")(req, res, function(){
        res.redirect("/");
      });
    }
  });

});

app.get("/about", function(req, res){
  if (req.isAuthenticated()){
    res.render("about");
  } else {
    res.redirect("/login");
  }
});

app.get("/contact", function(req, res){
  res.render("contact", {contactContent: contactContent});
});


app.listen(3000, function() {
  console.log("Server started on port 3000");
});