app.js

require('dotenv').config();

// Dependencies
var express = require('express'),
  app = express(),
  bodyParser = require('body-parser'),
  mongoose = require('mongoose'),
  flash = require('connect-flash'),
  passport = require('passport'),
  LocalStrategy = require('passport-local'),
  methodOverride = require('method-override'),
  // Models
  User = require('./models/user'),
  // Routes
  indexRoutes = require('./routes/index'),
  pinRoutes = require('./routes/pins'),
  commentRoutes = require('./routes/comments'),
  collectionRoutes = require('./routes/collections');

// DB Connection
var url = process.env.DATABASEURL || 'mongodb://localhost/around_the_world';
mongoose
  .connect(url, {
    useNewUrlParser: true,
    useCreateIndex: true,
    useUnifiedTopology: true,
    useFindAndModify: false
  })
  .then(() => {
    console.log('Connected to DB!');
  })
  .catch(err => {
    console.log('Error:', err.message);
  });

app.use(bodyParser.urlencoded({ extended: true }));
app.set('view engine', 'ejs');

// __dirname is the directory of this project
app.use(express.static(__dirname + '/public'));
app.use(methodOverride('_method'));
app.use(flash());

// Passport configuration
app.use(
  require('express-session')({
    secret: 'dsajffjealdfj',
    resave: false,
    saveUninitialized: false
  })
);
app.use(passport.initialize());
app.use(passport.session());
passport.use(new LocalStrategy(User.authenticate())); // authenticate is from passportLocalMongoose
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());

// Adds this middleware to each route. Passes user info
app.use(function(req, res, next) {
  // Creates a variable called currentUser for every file
  res.locals.currentUser = req.user;
  next();
});

// Use route files
app.use('/', indexRoutes);
app.use('/collections', collectionRoutes);
app.use('/collections/:id/comments', commentRoutes);
app.use('/collections/:id/pins', pinRoutes);

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