//

// MyTube! AJAX

//

function XmlHttpCreate()

{

	var xmlhttp = null;



	if (window.ActiveXObject)

	{

		try

		{

			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

		}

		catch (e)

		{

			try

			{

				xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");

			}

			catch (e)

			{

				alert("You need to enable active scripting and activeX controls.");

			}

		}

	}

	else if (window.XMLHttpRequest)

	{

		try

		{

			xmlhttp = new XMLHttpRequest();

		}

		catch (e)

		{

			alert("Error creating XMLHttpRequest object.");

		}

	}

	else

	{

		alert("XMLHttp is not supported on this browser.");

	}



	return xmlhttp;

}



function XmlHttpGET(xmlhttp, url)

{

	xmlhttp.open("GET",url,true);

	xmlhttp.send(null);

}



function XmlHttpPOST(xmlhttp, url, data)

{

	xmlhttp.open("POST",url,true);

	xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

	xmlhttp.setRequestHeader('Content-Length', data.length);

	xmlhttp.send(data);

}





/**

 * Utility class to facilitate encoding of post data

 */

function XmlHttpPostDataEncoder()

{

	this.data = new Array();

}



XmlHttpPostDataEncoder.prototype.addData = function(key, value)

{

	this.data[key] = value;

};



XmlHttpPostDataEncoder.prototype.encodeData = function()

{

	var encData = '';



	for (var i in this.data)

	{

		if (encData.length > 0) encData += '&';

		encData += encodeURIComponent(i) + '=' + encodeURIComponent(this.data[i]);

	}



	return encData;

};





function mytubeAJAX()

{



}



mytubeAJAX.prototype.init = function ()

{



}



mytubeAJAX.prototype.rateVideo = function(videoID, userID, rating)

{

	var thisRef = this;

	var xmlHttp = XmlHttpCreate();



	xmlHttp.onreadystatechange = function()

		{

			if (xmlHttp.readyState == 4)

			{

				if (xmlHttp.status == 200)

				{

					try

					{

						document.getElementById('ajaxRating').innerHTML = xmlHttp.responseText;

					}

					catch (e) {

						//alert('AJAX Error:\n\n' + e);

					}

				}

				else

				{

					//alert('AJAX Error:\n\n' + xmlHttp.responseText.substr(200));

				}

			}

		};



	var dataEncoder = new XmlHttpPostDataEncoder();

	dataEncoder.addData('option', 'com_mytube');

	dataEncoder.addData('task', 'rate_video');

	dataEncoder.addData('format', 'raw');

	dataEncoder.addData('id', videoID);

	dataEncoder.addData('user_id', userID);

	dataEncoder.addData('rating', rating);



	XmlHttpPOST(xmlHttp, 'index.php', dataEncoder.encodeData());

}





mytubeAJAX.prototype.featureVideo = function(videoID, addFeatured)

{

	var thisRef = this;

	var xmlHttp = XmlHttpCreate();



	xmlHttp.onreadystatechange = function()

		{

			if (xmlHttp.readyState == 4)

			{

				if (xmlHttp.status == 200)

				{

					try

					{

						document.getElementById('markFeatured').innerHTML = xmlHttp.responseText;

					}

					catch (e) {

						alert('AJAX Error!');

					}

				}

				else

				{

					//alert('AJAX Error:\n\n' + xmlHttp.responseText.substr(200));

				}

			}

		};





	var dataEncoder = new XmlHttpPostDataEncoder();

	dataEncoder.addData('option', 'com_mytube');

	if (addFeatured == "true") {

		dataEncoder.addData('task', 'add_featured');

	} else {

		dataEncoder.addData('task', 'remove_featured');

	}

	dataEncoder.addData('format', 'raw');

	dataEncoder.addData('id', videoID);



	XmlHttpPOST(xmlHttp, 'index.php', dataEncoder.encodeData());

}



mytubeAJAX.prototype.publishVideo = function(videoID, publishVideo)

{

	var thisRef = this;

	var xmlHttp = XmlHttpCreate();



	xmlHttp.onreadystatechange = function()

		{

			if (xmlHttp.readyState == 4)

			{

				if (xmlHttp.status == 200)

				{

					try

					{

						document.getElementById('publishVideo').innerHTML = xmlHttp.responseText;

					}

					catch (e) {

						alert('AJAX Error!');

					}

				}

				else

				{

					//alert('AJAX Error:\n\n' + xmlHttp.responseText.substr(200));

				}

			}

		};





	var dataEncoder = new XmlHttpPostDataEncoder();

	dataEncoder.addData('option', 'com_mytube');

	if (publishVideo == "true") {

		dataEncoder.addData('task', 'publishVideo');

	} else {

		dataEncoder.addData('task', 'unpublishVideo');

	}

	dataEncoder.addData('format', 'raw');

	dataEncoder.addData('id', videoID);



	XmlHttpPOST(xmlHttp, 'index.php', dataEncoder.encodeData());

}



function highlightStars(starMap, fullStar, halfStar, emptyStar) {

	var star1 = document.getElementById('videoStar1');

	var star2 = document.getElementById('videoStar2');

	var star3 = document.getElementById('videoStar3');

	var star4 = document.getElementById('videoStar4');

	var star5 = document.getElementById('videoStar5');



	// starmap: 0 = empty, 1 = half, 2 = full
	star1.src = starMap.charAt(0) == "2" ? fullStar : starMap.charAt(0) == "1" ? halfStar : emptyStar;

	star2.src = starMap.charAt(1) == "2" ? fullStar : starMap.charAt(1) == "1" ? halfStar : emptyStar;

	star3.src = starMap.charAt(2) == "2" ? fullStar : starMap.charAt(2) == "1" ? halfStar : emptyStar;

	star4.src = starMap.charAt(3) == "2" ? fullStar : starMap.charAt(3) == "1" ? halfStar : emptyStar;

	star5.src = starMap.charAt(4) == "2" ? fullStar : starMap.charAt(4) == "1" ? halfStar : emptyStar;
}