// VARIABLES
_level0.error._visible = false; // Hide the error message
var feedArray = new Array();
var blogArray = new Array();

main(); // Call the main function to get this going

// function: 	main
// Description:	Runs the program
// Output:		void
function main()
{
	getFeedArray();  // Get the feed array from the XML file
}

// function: 	getFeedArray
// Description:	Fetches the feeds from an xml file
// Output:		Array
function getFeedArray()
{
	var feed_file = "feed_selector.xml"; // Select xml file
	var feed_xml = new XML();
	feed_xml.ignoreWhite = true;
	
	feed_xml.onLoad = function(success) {
		if (success) {
			var array = processFeeds(feed_xml.childNodes,0);
			_level0.feedArray = array;
		}else{
			//DISPLAY ERROR MESSAGE
			_root.loading._visible = false;
			_root.error._visible = true;
			trace("can't fetch blog, try again");
		}
	};
	
	feed_xml.load(feed_file); // Load xml
}

// function: 	processFeeds
// Description:	Processes the XML file 
// Input: 		Root XML Child
// Output:		Array
function processFeeds(xmlitems, childnum)
{
	var child = xmlitems[childnum];
	switch(child.nodeName)
	{
		case "feed":
			var str = child.firstChild.nodeValue; // Gets the feed string
			//trace(str);
			return "http://" + str.substring(7, str.length); // Replaces 'feed://' with 'http://'
			break;
		case "feeds":
			feedArray = Array();
			for(var d=0;d<child.childNodes.length;d++)
			{
				feedArray.push(processFeeds(child.childNodes,d));
			}
			return feedArray;
			break;
		default:
			trace("Malformed XML file.");
			return null;
			break;
	}
}

// function: 	getBlogArray
// Description:	Takes the feeds and gets the blog information
// Input: 		Array populated addresses to feeds
// Output:		Array
function getBlogArray(feedArray)
{
	var blogArray = Array();
	for(var i=0;i<feedArray.length;i++)
	{
		blogArray.push(fetchBlog(feedArray[i]));
	}
	for(var i in blogArray){
		for(var j in blogArray[i]){
			trace(i+"-"+j+": "+blogArray[i][j]);
		}
	}
	
	return blogArray;
}

// function: 	fetchBlog
// Description:	Takes the feeds and gets the blog information
// Output:		Array
function fetchBlog(feed)
{
	var blog_xml = new XML();
	blog_xml.ignoreWhite = true;

	blog_xml.onLoad = function(success) {
		if (success) {
			var dataArray = processBlog(blog_xml.childNodes,0,false);
			return dataArray;
		}else{
			//DISPLAY ERROR MESSAGE
			_root.loading._visible = false;
			_root.error._visible = true;
			trace("can't fetch blog, try again");
		}
	};
	
	blog_xml.load(feed); // Load xml
}

function processBlog(xmlitems, childnum, isItem)
{
	var child = xmlitems[childnum];
	dataArray = new Array();
	switch(child.nodeName)
	{
		case "rss":break;
		case "title":
			if(isItem)
			{
				dataArray = {item_title: child.firstChild.nodeValue};
			}else{
				dataArray = {blog_title: child.firstChild.nodeValue};
			}
			break;
		case "link":
			if(isItem)
			{
				dataArray = {item_link: child.firstChild.nodeValue};
			}else{
				dataArray = {blog_link: child.firstChild.nodeValue};
			}
			break;
		case "description":
			if(isItem)
			{
				dataArray = {item_description: child.firstChild.nodeValue};
			}else{
				dataArray = {blog_description: child.firstChild.nodeValue};
			}
			break;
		case "language":
			dataArray = {blog_language: child.firstChild.nodeValue};
			break;
		case "item":
			for(var d=0;d<child.childNodes.length;d++)
			{
				dataArray.push(processBlog(child.childNodes,d,true));
			}
			var tmp = dataArray;
			for(var i in tmp){
			  	for(var j in tmp[i]){
					dataArray[j] = tmp[i][j];
			  	}
			}
			break;
		case "comments":
			dataArray = {item_comments: child.firstChild.nodeValue};
			break;
		case "category":
			dataArray = {item_category: child.firstChild.nodeValue};
			break;
		case "pubDate":
			dataArray = {item_pubdate: child.firstChild.nodeValue};
			break;
		case "dc:creator":
			dataArray = {item_creator: child.firstChild.nodeValue};
			break;
		case "guid":
			dataArray = {item_guid: child.firstChild.nodeValue};
			break;
		case "channel":
			for(var d=0;d<child.childNodes.length;d++)
			{
				dataArray.push(processBlog(child.childNodes,d,false));
			}
			var tmp = dataArray;
			for(var i in tmp){
			  	for(var j in tmp[i]){
					dataArray[j] = tmp[i][j];
			  	}
			}
			break;
		default:
			trace("Malformed XML file.");
			return null;
			break;
	}
	return dataArray;
}