app.js

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');
var multer = require('multer');
var mongoose = require("mongoose");
var session = require("express-session");
var passport = require("passport");

var User = require("./models/user").User;
var Zap = require("./models/zap").Zap;


// set up mongo database
// var connection_string = process.env.MONGOLAB_URI || "localhost:27017/gra";
// console.log("CONNECTION STRING: " + connection_string);
// mongoose.connect(connection_string);
var connection_string = 'localhost/zap';

if (process.env.OPENSHIFT_MONGODB_DB_PASSWORD) {
  connection_string = process.env.OPENSHIFT_MONGODB_DB_USERNAME + ':' +
        process.env.OPENSHIFT_MONGODB_DB_PASSWORD + '@' +
        process.env.OPENSHIFT_MONGODB_DB_HOST + ':' +
        process.env.OPENSHIFT_MONGODB_DB_PORT + '/zap';
}

console.log(connection_string);

mongoose.connect('mongodb://' + connection_string);

var db = mongoose.connection;

db.on("error", console.error.bind(console, "Mongoose connection error."));
db.once("open", function callback() {
      // mongoose.connection.db.dropDatabase(function(err, result) {
      //     if (err) {
      //         console.error.bind(console, "Mongoose database error.");
      //     } else {
      //         console.log("Connected to Mongoose");
                  // Try inserting admin into db
                User.findOne({username:'admin'}).exec(function(err, user) {
                    if (err) {
                        console.log("error inserting admin into db");
                        return;
                    } else {
                        if (!user) {
                            User.registerAdmin(function(err, u) {
                                  if (err) return console.log("Error adding user.");
                                  // insert dummy data
                                  Zap.insertDummyData(u._id, function(err, zaps) {
                                    if (err) return console.log("Error inserting dummy data.")
                                  });
                                }
                            )
                        } else {
                          // insert dummy data
                          User.findOne({username: 'admin'}).exec(function(err, user){
                            if (err) return console.log("Error");
                            Zap.insertDummyData(user._id, function(err, zap) {
                              if (err) return console.log("Error inserting dummy data.")
                            });
                          });
                        }
                    }

                });
      //     }
      // });

    console.log("Connected to Mongoose.");
});

var routes = require('./routes/index');
var zaps = require('./routes/zaps');
var users = require('./routes/users');

var app = express();

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

// app.use(multer({
 
//     dest: "documents/"
 
//     }));

// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
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(session({secret: "zapme"}));
app.use(passport.initialize());
app.use(passport.session());


app.use('/', routes);
app.use('/users', users);
app.use('/zaps', zaps);

// 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: {}
    });
});


module.exports = app;
app.listen(process.env.OPENSHIFT_NODEJS_PORT || 8080,
           process.env.OPENSHIFT_NODEJS_IP);