server.js

if(process.env.NODE_ENV !== 'production'){
    require('dotenv').config();
}   
const express = require('express');
const app  = express();
const expressLayouts = require('express-ejs-layouts');

const indexRoutes = require('./routes/index');
const authorRoutes = require('./routes/authors');

app.set('view engine', 'ejs');
app.set('views', __dirname + '/views');
app.set('layout', 'layouts/layout');
app.use(expressLayouts);
app.use(express.static('public'));

const mongoose = require('mongoose');
mongoose.connect(process.env.DATABASE_URL, {useNewUrlParser: true});

const db = mongoose.connection;
db.on('error', error => console.error(error));
db.once('open', () => console.log('Connected to Mongoose'));

app.use('/', indexRoutes);
app.use('/authors', authorRoutes);


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