/** 
@module Tracker
@class Controller
@This class is acting as controller module which will dispatch request to specific module after processing some security check.  
*/
exports.controller = function( req,res)
{

/** 	API Watchman implementation 
	@method Controller
	*/

		var ApiFunctions = require('./lib/api/apiFunctions').ApiFunctions;
		try{

		//mandatory checking.	
		var mandatoryFields = ApiFunctions[req.params.method].mandatoryFields;
		for (var i in mandatoryFields){
			if( ! req.param(mandatoryFields[i]) )
			throw  new Error('Required fields are not persent'+ mandatoryFields[i]);
					
		}
		//dispatching request to api method.	
		ApiFunctions[req.params.method].method(req,res);	

		}
		catch(e)
		{
			res.end( '{error:"' + e+'"}');
		}						
};