app.js

var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var cors = require('cors');
var bodyParser = require('body-parser');
const dotenv = require('dotenv');
const mongoose = require('mongoose');
const multer = require('multer');
const fileUpload = require('express-fileupload');
const swaggerUi = require('swagger-ui-express');
const swaggerDocument = require('./documentation.json');

var app = express();
dotenv.config();

mongoose.Promise = global.Promise;
mongoose.connect(process.env.DATABASE_URL, { useNewUrlParser: true, useUnifiedTopology: true  })
  .then(() => console.log("MongoBD connected successfully!"))
  .catch((err) => console.log(err));
mongoose.set('useFindAndModify', false);

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('dev'));
app.use(express.json({ limit: '50mb' }));
app.use(express.urlencoded({ limit: '50mb', extended: true }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use(cors());
app.use(bodyParser.json({ limit: '50mb' }));
app.use(bodyParser.urlencoded({ limit: '50mb', extended: true }));
app.use(multer().array({ limit: '50mb' }));
app.use(fileUpload());

var indexRouter = require('./routes/index');
app.use('/', indexRouter);
app.use('/api-docs', swaggerUi.serve, swaggerUi.setup(swaggerDocument));

// 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 : {};

  console.log(err.message);

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

module.exports = app;