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 hbs = require('hbs');

// Allows us to pass JSON from server side 
 hbs.registerHelper('json', function(context) {
    return JSON.stringify(context);
 });

 hbs.registerHelper("inc", function(value, options)
{
    return parseInt(value) + 1;
});


// Routes
var routes = require('./routes/index');
var api = require('./routes/api');

// Configuration file
var config = require('./config.js');

// Database client
var db = require('./client/database.js').instance;

// Redis Store Session
var session = require('express-session');
var RedisStore = require('connect-redis')(session);


// Initialize the application
var app = express();

// Create session manager using a Redis store.
app.use(session({
    store: new RedisStore(),
    secret: config.redis_secret
}));

// Make our database accessible to our router
app.use(function(req,res,next){
    req.db = db;
    //console.log(req.session);
    next();
});

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

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__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('/', routes);
app.use('/api', api);

// 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;