app.js

//jshint esversion:6
require("dotenv").config();
const dotenv=require('dotenv');
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 FacebookStrategy = require('passport-facebook').Strategy;





const app = express();

app.use(express.static('public'));
app.set('view engine', 'ejs');
app.use(bodyParser.urlencoded({ extended: true }));
app.use(session({
  secret:process.env.SECRET,
  resave:false,
  saveUninitialized:false

}))
app.use(passport.initialize())
app.use(passport.session())
mongoose.connect("mongodb+srv://admin-damini:test-123@cluster0.jugbm.mongodb.net/userDB?retryWrites=true&w=majority",{useNewUrlParser:true})
mongoose.set("useCreateIndex",true)
const userSchema= new mongoose.Schema({
  email:String,
  password:String,
  googleId:String,
  secret:[String],
  facebookId:String
})

userSchema.plugin(passportLocalMongoose)
userSchema.plugin(findOrCreate)
const User=new mongoose.model("User",userSchema)
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: "https://secrets101.herokuapp.com/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);
    });
  }
));
passport.use(new FacebookStrategy({
    clientID: process.env.CLIENT_ID_FB,
    clientSecret: process.env.CLIENT_SECRET_FB,
    callbackURL: "https://secrets101.herokuapp.com/auth/facebook/secrets"
  },
  function(accessToken, refreshToken, profile, cb) {
    User.findOrCreate({ facebookId: profile.id }, function (err, user) {
      return cb(err, user);
    });
  }
));
app.get("/",(req,res)=>{
  res.render("home")
})
app.get('/auth/google',
  passport.authenticate('google', { scope: ['profile'] }));
app.get("/register",(req,res)=>{
  res.render("register")
})
app.get('/auth/facebook',
  passport.authenticate('facebook'));
app.get("/login",(req,res)=>{
  res.render("login")
})
app.get("/secrets",(req,res)=>{
User.find({"secret":{$ne:null}},function(err,foundUsers){
  if(err){
    console.log(err)
  }else{
    if (foundUsers) {
              res.render("secrets",{usersWithSecrets:foundUsers})
            }
  }
})
})
app.post("/register",(req,res)=>{
  User.register({username:req.body.username},req.body.password,(err,user)=>{
    if(err){
      console.log(err)
      res.redirect("/register")
    }else{
      passport.authenticate("local")(req,res,()=>{
        res.redirect("/secrets")
      })
    }
  })
})

// app.post("/login",(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,()=>{
//         res.redirect("/secrets")
//       })
//     }
//   })
// })
app.post('/login',

  passport.authenticate('local', { failureRedirect: '/login' }),

  function(req, res) {

    res.redirect('/secrets');

  });

app.get("/logout",(req,res)=>{
  req.logout()
  res.redirect("/")
})
app.get('/auth/google/secrets',
  passport.authenticate('google', { failureRedirect: '/login' }),
  function(req, res) {
    // Successful authentication, redirect home.
    res.redirect('/secrets');
  });
  app.get('/auth/facebook/secrets',
  passport.authenticate('facebook', { failureRedirect: '/login' }),
  function(req, res) {
    // Successful authentication, redirect home.
    res.redirect('/secrets');
  });
  app.get("/submit",function(req,res){
    if(req.isAuthenticated()){
      res.render("submit")
    }else{
      res.redirect("/login")
    }
  })
  app.post("/submit",function(req,res){
    const submittedSecret=req.body.secret
    User.findById(req.user.id,function(err,foundUser){
      if(err){
        console.log(err)
      }else{
        if(foundUser){
          foundUser.secret.push(submittedSecret)
          foundUser.save(function(){
            res.redirect("/secrets")
          })

        }
      }
    })
  })

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