app.js

var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var favicon = require('serve-favicon');
var morgan = require('morgan');
var fs = require('fs');
var mongoose = require('mongoose');
var expressHbs = require('express-handlebars');
var session = require('express-session');
var passport = require('passport');
var flash = require('connect-flash');
var validator = require('express-validator');
var MongoStore = require('connect-mongo')(session);

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/user');
var keys = require('./config/keys');
var app = express();

mongoose
  .connect(keys.mongoURI)
  .then(() => console.log('connection successful'))
  .catch(err => console.error(err));

var accessLogStream = fs.createWriteStream(path.join(__dirname, 'access.log'), {
  flags: 'a'
});

require('./config/passport');

// view engine setup
app.engine('.hbs', expressHbs({ defaultLayout: 'layout', extname: '.hbs' }));
app.set('view engine', '.hbs');

app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(morgan('combined', { stream: accessLogStream }));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(
  session({
    secret: 'mysupersecret',
    resave: false,
    saveUninitialized: false,
    store: new MongoStore({ mongooseConnection: mongoose.connection }),
    cookie: { maxAge: 180 * 60 * 1000 }
  })
);
app.use(flash());
app.use(validator());
app.use(passport.initialize());
app.use(passport.session());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/user', usersRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

app.listen(keys.port);
module.exports = app;