var config = new Object();
var start = 0;
var all_tags = [];
var tag_counts = [];
var cloud = new Object();

config.order = 'alphabetical';
config.minsize = '100';
config.maxsize = '100';
config.math = 'linear';
var url_base = 'http://' + document.domain + '/';

$(document).ready(function() {
	
	function sortNum(a, b) {return (a - b);}
	function sortByValue(keyArray, valueMap) {
		return keyArray.sort(function(a,b){return valueMap[a]-valueMap[b];});
	}
	function getProperties (obj) {
		var properties = [];
		for (var property in obj) properties.push(property);
		return properties;
	}
	function getTags() {
		$.getJSON(url_base+'api/read/json?callback=?&num=50&start='+start, function(data)	{
			$(data.posts).each(function(i, post) {
				$(post.tags).each(function(i, tag) {
					if(typeof(tag) == 'string') all_tags.push(tag);
				});
			});
			if (start+50 < data['posts-total'])	{
				start = start + 50;
				getTags();
			} else {
				getCloud();
			}
		});
	}
	function getCloud()	{
		$(all_tags).each(function(i, tag)	{
			cloud[tag] = (cloud[tag] ? cloud[tag] + 1 : 1);
		});
		var raw_cloud = new Object;
		for(tag in cloud) {raw_cloud[tag] = cloud[tag];}
		
		var cloudSorted = new Object();
		var cloudKeys = getProperties(cloud);
		var sortedTags = cloudKeys.sort(function(x,y) {
      var a = String(x).toUpperCase();
      var b = String(y).toUpperCase();
      if (a > b) {return 1;}
      if (a < b) {return -1;}
      return 0; 
    });
		for (k in sortedTags) {
			cloudSorted[sortedTags[k]] = cloud[sortedTags[k]];
		}
		cloud = cloudSorted;
		

		size_range = config.maxsize - config.minsize;
		for (j in cloud) tag_counts.push(cloud[j]);
		tag_counts.sort(sortNum);
		min_count = tag_counts[0];
		max_count = tag_counts[tag_counts.length - 1];
		slope = size_range / (max_count - min_count);
		count = 0
		for (tag in cloud) {
			count++;
			if(typeof(config.limit) != 'undefined' && 
			config.limit != 'none' && 
			count > config.limit) {
				break;
			}
			font_size = Math.round(slope*cloud[tag]-(slope*min_count-config.minsize));
			title = (raw_cloud[tag] == 1 ? raw_cloud[tag] + ' post' : raw_cloud[tag] + ' posts');
			link = '<a href="'+url_base+'tagged/'+tag+'" title="'+title+'">'+tag+'</a>';
			output = '<li>'+link+' <span>(' + raw_cloud[tag] + ')</span></li>';
			$("#tag_list").append(output);
		}
		$("#loading_tag_cloud").remove();
	}
	getTags();	
});