var flickrBackground = new function()
{
	this.flickrApiKey = '35ff6d913485f9f45a4c218683e36bdf';
	this.flickrApiUrl = 'http://api.flickr.com/services/rest/';
	this.flickrTag = 'rocknroll';

	this.ignoredUserids = {
		'56369834@N00' : true
	};

	this.licenses = {
		1 : 'http://creativecommons.org/licenses/by-nc-sa/2.0/',
		2 : 'http://creativecommons.org/licenses/by-nc/2.0/',
		3 : 'http://creativecommons.org/licenses/by-nc-nd/2.0/',
		4 : 'http://creativecommons.org/licenses/by/2.0/',
		5 : 'http://creativecommons.org/licenses/b-sa/2.0/',
		6 : 'http://creativecommons.org/licenses/by-nd/2.0/',
		7 : 'http://flickr.com/commons/usage/'
	};

	this.fetchRandomPicture = function(tag, callback, size, tries)
	{
		var size = size || 500;
		var tries = tries || 3;
		window.jsonFlickrApi = function(o) { callback.apply(flickrBackground, [o]) };
		$.ajax({
			'url' : this.flickrApiUrl,
			'dataType': 'jsonp',
			'data' : {
				'api_key'   : this.flickrApiKey,
				'method'	: 'flickr.photos.search',
				'tags'	  	: tag,
				'license'   : '1,2,3,4,5,6,7',
				'sort'	  	: 'interestingness-desc',
				'safe_search'   : '2',
				'content_type'  : '1',
				'media'	 	: 'photos',
				'extras'	: 'url_l,owner_name,license',
				'per_page'	: tries,
				'page'	  	: parseInt(1 + Math.floor(Math.random()*size+1)),
				'format'	: 'json'
			}
		});
	};
	
	this.getPicture = function(callback)
	{
		this.fetchRandomPicture(this.flickrTag, callback);
	};

	this.loadPicture = function()
	{
		this.getPicture(function(o)
		{
			if (o && o.stat == 'ok' && o.photos && o.photos.photo.length)
			{
				var photos = o.photos.photo;
				var i = 0;
				while (i in photos)
				{
					if (photos[i].url_l && !(photos[i].owner in this.ignoredUserids))
					{
						var pic = photos[i];
						break;
					}
					i++;
				}

				if (pic)
				{
					$('<img/>').attr('src', pic.url_l)
						.one('load', function()
						{
							var baseURL = 'http://www.flickr.com/photos/' + pic.owner + '/';
							var pictureURL = baseURL + pic.id + '/';
							$('#bg_credit a[rel="about"]')
								.attr('href', pictureURL);
							$('#bg_credit')
								.attr('about', pictureURL);
							$('#bg_credit a[rel="cc:attributionURL"]')
								.attr('href', baseURL)
								.text(pic.ownername);
							$('#bg_credit a[rel="license"]')
								.attr('href', flickrBackground.licenses[pic.license]);
							$('body')
								.css('background-image', 'url("' + pic.url_l + '")');
						})
						.each(function() { if (this.complete) $(this).trigger('load'); });
				}
			}
			this.setTimeout();
		});
	}
	
	this.setTimeout = function()
	{
		window.setTimeout(function() { flickrBackground.loadPicture.apply(flickrBackground) }, 5000);
	}
};

$(document).ready(function()
{
	flickrBackground.setTimeout();
});

$('a:not([href^=http://sagie.maoz.info])').live('click', function(e)
{
	window.open($(this).attr('href'));
	e.preventDefault();
});