app.js

const createError = require('http-errors');
const express = require('express');
const path = require('path');
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const logger = require('morgan');
const mongoose = require('mongoose');

const database = require('./config/database');
const setting = require('./config/setting');

const indexRouter = require('./routes/indexRouter');

const app = express();

mongoose.connect(database.dbStr, {useNewUrlParser: true});
mongoose.connection.on('error', function(err) {
  console.log('Error connect to Database: ' + err);
});

app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: false}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use(setting.api_version + '/', indexRouter);

// 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.send(err);
});

module.exports = app;