package com.zehfernando.utils {
	import flash.display.Loader;
	import flash.events.IOErrorEvent;
	import flash.external.ExternalInterface;
	import flash.net.URLRequest;	

	/**
	 * @author Zeh Fernando
	 */
	public class DARTUtils {

		// Properties
		protected static var inited:Boolean;
		protected static var testMode:Boolean;
		
		// ================================================================================================================
		// CONSTRUCTOR ----------------------------------------------------------------------------------------------------

		public function DARTUtils() {
			throw new Error("You cannot initialize this class");
		}

		// ================================================================================================================
		// STATIC functions -----------------------------------------------------------------------------------------------

		public static function init(): void {
			if (!inited) {
				inited = true;
				if (!AppUtils.isTesting()) {
					trace ("DARTUtils :: init :: LIVE mode :: ExternalInterface.available = " + ExternalInterface.available);
					testMode = false;
				} else {
					//trace ("DARTUtils :: init :: TEST mode");
					testMode = true;
				}
			}
		}
		
		public static function trackPageView(__tag:String): void {
			if (!inited) return;
			
			if (__tag == "") return;
		
			// Below code comes from DART themselves (with small changes)			
			var ldr:Loader = new Loader();
			var rnd:Number = Math.floor(Math.random() * 1000000000);
			var url:String = __tag.replace("[rnd]", rnd.toString(10));
			//var url:String = "http://ad.doubleclick.net/activity;src=1234567;type=group123;cat=trans123;ord="+ rnd +"?";
			var urlReq:URLRequest = new URLRequest(url);
			ldr.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, onError, false,0, true);
			ldr.load(urlReq);
		
			//if (!testMode) {
			//ExternalInterface.call("dcsMultiTrack",  WT_PARAMETER_URI, __uri, WT_PARAMETER_TITLE, __title);
			//}
		
			if (testMode) {
				trace ("DARTUtils :: trackPageView :: " + url);
			}
			
		}
		
		protected static function onError(e:IOErrorEvent): void {
			// To catch error message due to DART's loading of invalid content
			trace ("GAUtils :: IOError :: ["+e+"]"); 
		}

	}
}