Load all the routes defined in the route folder;

RouteFactory

================ WIP =============
/**
 * Express router needs to be defined and each file module.exports should return the router
 */

var fs = require ('fs' ) ;
var _ = require ('lodash');
var routes = {};

/*
Folder Structure:
prj_folder
--app.js // doesnt matter
--route
	-- v1
		--route_file1.js
		--route_sub
			-- route_file2.js

			
routes will be translated for above structure as
 /v1/{{routes defined in route_file1}}
 /v1/route_sub/{{routes defined in route_file2}}
*/

var topDir = __dirname ;
module.exports =  function (app) { //function ( req , res , next ) {
	var path = '/v1' ; // todo change this to read all the subfolders for the 'route'
	detRoutes (app, path ) ;

} ;

/**
 * route path is generated based on the folder structure
 * if file then currentpath/filename will be the route
 */
function detRoutes (app, path ) {
	var pathContents = fs.readdirSync( topDir + path ) ;
	if ( pathContents ) {
		for ( var i=0;i<pathContents.length; i ++ ) {
			var relPath = path + '/' + pathContents[i] ;
			var childPath = topDir + relPath ;
			var stat = fs.lstatSync( childPath ) ;

			if ( stat.isFile ( ) ) {
				var router = require ( childPath ) ();
				var subroute = getFileNameWithoutExtension ( pathContents[i] ) ;
				var routeName = path + '/' + subroute ;
				routes[routeName] = router ;
				app.use ( routeName , router ) ;
			}
			else if ( stat.isDirectory () ) {
				detRoutes ( app, relPath ) ;
			}
		}
	}
}

function getFileNameWithoutExtension ( filename ) {
	return filename.substring (0,filename.lastIndexOf('.')) ;
}

function getFileExtension ( filename ) {
	return filename.substring (filename.lastIndexOf('.')) ;
}