var _flickr_photos = Array();
var _flickr_image_current;
var _flickr_page = 1;
var _flickr_pages = 1;
var _flickr_per_page = 1;
var _flickr_total = 0;

function flickrFetch(o)
{
	var s = 
	{
		api_key: null,              // [string]    required, see http://www.flickr.com/services/api/misc.api_keys.html
		type: null,                 // [string]    allowed values: 'photoset', 'search', default: 'flickr.photos.getRecent'
		photoset_id: null,          // [string]    required, for type=='photoset'  
		photo_id: null,          	// [string]    required, for type=='photo'  
		text: null,			        // [string]    for type=='search' free text search
		user_id: null,              // [string]    for type=='search' search by user id
		group_id: null,             // [string]    for type=='search' search by group id
		tags: null,                 // [string]    for type=='search' comma separated list
		tag_mode: 'any',            // [string]    for type=='search' allowed values: 'any' (OR), 'all' (AND)
		sort: 'relevance',    		// [string]    for type=='search' allowed values: 'date-posted-asc', 'date-posted-desc', 'date-taken-asc', 'date-taken-desc', 'interestingness-desc', 'interestingness-asc', 'relevance'
		thumb_size: 's',            // [string]    allowed values: 's' (75x75), 't' (100x?), 'm' (240x?)
		size: null,                 // [string]    allowed values: 'm' (240x?), 'b' (1024x?), 'o' (original), default: (500x?)
		per_page: 100,              // [integer]   allowed values: max of 500
		page: 1,     	            // [integer]   see paging notes
		attr: '',                   // [string]    optional, attributes applied to thumbnail <a> tag
		api_url: null,              // [string]    optional, custom url that returns flickr JSON or JSON-P 'photos' or 'photoset'
		params: '',                 // [string]    optional, custom arguments, see http://www.flickr.com/services/api/flickr.photos.search.html
		api_callback: '?',          // [string]    optional, custom callback in flickr JSON-P response
		load_callback: null,        // [function]    optional, custom callback in flickr JSON-P response
		callback: null,             // [function]  optional, callback function applied to entire <ul>
		callback_param: null        // [object]  optional, callback param to pass to the callback
	};
	
	if(o) $.extend(s, o);
	
	return queryFlickr(s);
}

function queryFlickr(s)
{
	var url = $.flickr.format(s);
	_flickr_photos = Array();

	$.getJSON(url, function(r)
	{
		if (r.stat != "ok")
		{
			var _err = "";
			
			for (i in r)
			{
				_err += i + ': ' + r[i] + "\n";
			}
			
			//alert(_err);
		} 
		else 
		{
			if(s.type == 'search' || s.type == 'photoset')
			{
				if (s.type == 'photoset') r.photos = r.photoset;
				
				_flickr_page = r.photos.page;
				_flickr_pages = r.photos.pages;
				_flickr_per_page = r.photos.perpage;
				_flickr_total = r.photos.total;
				
				
				//console.log("r.photos.page: %d", r.photos.page);
				//console.log("r.photos.pages: %d", r.photos.pages);
				//console.log("r.photos.perpage: %d", r.photos.perpage);
				//console.log("r.photos.total: %d", r.photos.total);
				//console.log("r.photos.photo.length: %d", r.photos.photo.length);
				
				//for (var i=0; i<r.photos.photo.length; i++)
				for (var i=0; i<r.photos.photo.length; i++)
				{
					_flickr_photos.push(r.photos.photo[i]);
					
					if (s.load_callback) s.load_callback(r.photos.photo[i]);
		
				}
			}
			else if(s.type == 'photo')
			{				
				_flickr_image_current = r.photo;
				
			}
			
			if (s.callback)
			{
				s.callback(s.callback_param1, s.callback_param2);
			}
		};
	});
}

$.flickr = 
{
	//http://api.flickr.com/services/rest/?format=json&api_key=508d5015d0032bd169af26461b5ef4a8&method=flickr.photos.search&group_id=874442@N25
	format: function(s)
	{
		if (s.url) return s.url;
	
		var url = 'http://api.flickr.com/services/rest/?format=json&jsoncallback='+s.api_callback+'&api_key='+s.api_key;
	
		switch (s.type)
		{
			case 'photo':
				url += '&method=flickr.photos.getInfo&photo_id=' + s.photo_id;
			break;
			
			case 'photoset':
				url += '&method=flickr.photosets.getPhotos&photo_id=' + s.photoset_id;
			break;
		
			case 'search':
				url += '&method=flickr.photos.search&sort=' + s.sort;
	
				if (s.user_id) url += '&user_id=' + s.user_id;
				if (s.group_id) url += '&group_id=' + s.group_id;
				if (s.tags) url += '&tags=' + s.tags;
				if (s.tag_mode) url += '&tag_mode=' + s.tag_mode;
				if (s.text) url += '&text=' + s.text;
			break;
	
			default:
				url += '&method=flickr.photos.getRecent';
		};
	
		if (s.size == 'o') url += '&extras=original_format';
	
		url += '&per_page=' + s.per_page + '&page=' + s.page + s.params;
		return url;
	},
	
	getThumbnail: function(photo)
	{
		return 'http://farm'+photo['farm']+'.static.flickr.com/'+photo['server']+'/'+photo['id']+'_'+photo['secret']+'_s.jpg';
	},
	
	getURL: function(photo, size)
	{
		var h = 'http://farm'+photo['farm']+'.static.flickr.com/'+photo['server']+'/'+photo['id']+'_';

		switch (size)
		{
			case 'm':
				h += photo['secret'] + '_m.jpg';
			break;
			
			case 'b':
				h += photo['secret'] + '_b.jpg';
			break;
		
			case 'o':
				if (photo['originalsecret'] && photo['originalformat']) 
				{
					h += photo['originalsecret'] + '_o.' + photo['originalformat'];
				} 
				else 
				{
					h += photo['secret'] + '_b.jpg';
				};
			break;
		
			default:
				h += photo['secret'] + '.jpg';
		};
	}
};