text: ﻿'use strict';
  var debug = require('debug');
  var express = require('express');
  var path = require('path');
  var favicon = require('serve-favicon');
  var logger = require('morgan');
  var cookieParser = require('cookie-parser');
  var bodyParser = require('body-parser');
  
  // set up mongoose connection
  var mongoose = require('mongoose');
  var mongoDB = 'mongodb://127.0.0.1:27017/local_library';
  mongoose.connect(mongoDB, {
    useMongoClient: true
  });
  var db = mongoose.connection;
  db.on('error', console.error.bind(console, 'MongoDB connection error:'));
  
  // set up routes
  var routes = require('./routes/index');
  var users = require('./routes/users');
  
  var app = express();
  
  // view engine setup
  app.set('views', path.join(__dirname, 'views'));
  app.set('view engine', 'pug');
  
  // uncomment after placing your favicon in /public
  app.use(favicon(__dirname + '/public/favicon.png'));
  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')));c
  
  app.use('/', routes);
  app.use('/users', users);
  app.use('/users/cool', users);
  
  // catch 404 and forward to error handler
  app.use(function (req, res, next) {
      var err = new Error('Not Found');
      err.status = 404;
      next(err);
  });
  
  // error handlers
  
  // development error handler
  // will print stacktrace
  if (app.get('env') === 'development') {
      app.use(function (err, req, res, next) {
          res.status(err.status || 500);
          res.render('error', {
              message: err.message,
              error: err
          });
      });
  }
  
  // production error handler
  // no stacktraces leaked to user
  app.use(function (err, req, res, next) {
      res.status(err.status || 500);
      res.render('error', {
          message: err.message,
          error: {}
      });
  });
  
  app.set('port', process.env.PORT || 3000);
  
  var server = app.listen(app.get('port'), function () {
      debug('Express server listening on port ' + server.address().port);
  });
  