var news =  {
		category:"news",
		newer: {id:"",date:0,title:"",body:""},
		current: {},
		older :{}
}

var blog = {};
var trainerblog = {};

function initfeeds() {
	$.extend(true,news.current,news.newer);
	$.extend(true,news.older,news.newer);
	$.extend(true,blog,news);
	blog.category = "blog";
	$.extend(true,trainerblog,news);
	trainerblog.category = "trainerblog";
	$(".newer").hide();
	
	startFeeds("news",getNews());
	startFeeds("blog",getBlog());
	startFeeds("trainerblog",getTrainerBlog());
	
	$("#news .older").click(function() {moveOlder(getNews());});
	$("#news .newer").click(function() {moveNewer(getNews());});
	$("#blog .older").click(function() {moveOlder(getBlog());});
	$("#blog .newer").click(function() {moveNewer(getBlog());});
	$("#trainerblog .older").click(function() {moveOlder(getTrainerBlog());});
	$("#trainerblog .newer").click(function() {moveNewer(getTrainerBlog());});
	$(".older").hover(function(){
		$(this).attr("src","img/older_hover.png");
	},function() {
		$(this).attr("src","img/older.png");
	});
	$(".newer").hover(function(){
		$(this).attr("src","img/newer_hover.png");
	},function() {
		$(this).attr("src","img/newer.png");
	});
}
function startFeeds(cat,o) {
	$.get("inc/initfeed.php","category="+cat,function(data) {
		$.extend(o.current,data);
		$.get("inc/initfeed.php","category="+cat+"&lookfor=older&id="+o.current.id,function(data) {
			if (data.id!=="-1") {
				$.extend(o.older,data);
			} else {
				$("#"+cat+" .older").hide();
			}
			updateFeed(o.current);
		},"json");
	},"json");
}

function getNews() {return news;}
function getBlog() {return blog;}
function getTrainerBlog() {return trainerblog;}

function moveOlder(o) {
	$.extend(o.newer,o.current);
	$.extend(o.current,o.older);
	updateFeed(o.current);
	validate(o.newer.id,"newer",o.category);
	$.get("inc/initfeed.php","id="+o.older.id+"&lookfor=older&category="+o.category,function(item) {
		$.extend(o.older,item);
		validate(o.older.id,"older",o.category);
	},"json");
	var scrollTo=$("#pagelist #"+o.category).position().top
	$("#pagelist").animate({"top":"-"+scrollTo},0);
	
}
function moveNewer(o) {
	$.extend(o.older,o.current);
	$.extend(o.current,o.newer);
	updateFeed(o.current);
	validate(o.older.id,"older",o.category);
	$.get("inc/initfeed.php","id="+o.newer.id+"&lookfor=newer&category="+o.category,function(item) {
		$.extend(o.newer,item);
		validate(o.newer.id,"newer",o.category);
	},"json");
	var scrollTo=$("#pagelist #"+o.category).position().top
	$("#pagelist").animate({"top":"-"+scrollTo},0);
}
function validate(val,type,cat) {
	var btn="#"+cat+" ."+type;
	(val==="-1"?$(btn).hide():$(btn).show());
}	
function updateFeed(o) {
	var c=$("#"+o.category);
	c.find(".title").html(o.title);
	o.body.length>400?c.addClass("scrollarea"):c.removeClass("scrollarea");
	c.find(".body").html(o.body)
	c.find(".date").html("Posted "+(new Date(parseFloat(o.date)*1000).toDateString()));

}