// File Name: comp229-f2021-midTerm-300955234-2
// Author Name: Ameen 
// Student ID: 300955234
// Web App Name: Managing Books 

// imports module exports from another file framework
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');

//Database setup
let mongoose = require('mongoose');
let dbURI = require('./db');

// Connect to the Database
mongoose.connect(process.env.AtlasDB || dbURI.AtlasDB);
let mongoDB = mongoose.connection;
mongoDB.on('error', console.error.bind(console, 'Connection Error:'));
mongoDB.once('open', ()=>{
  console.log('Connected to MongoDB...');
});

//setup routes
var indexRouter = require('../routes/index');
var bookRouter = require('../routes/book');

var app = express();

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

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

app.use('/', indexRouter);
app.use('/book', bookRouter);

// 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');
});

module.exports = app;
