/*
 * jQuery Flickr - jQuery plug-in
 * Version 1.0, Released 2008.04.17
 *
 * Copyright (c) 2008 Daniel MacDonald (www.projectatomic.com)
 * Dual licensed GPL http://www.gnu.org/licenses/gpl.html 
 * and MIT http://www.opensource.org/licenses/mit-license.php
 */
(function($) {

$.fn.flickr = function(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'  
    text: null,					// [string]    for type=='search' free text search
    user_name: null,			// [string]    used to generate Flickr urls
    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?)
    thumb_link: 'photo',		// [string]    allowed values: 'photo' (direct link to image), 'flickr' (link to page on Flickr) (added by kensoliva)
    size: null,					// [string]    allowed values: 'm' (240x?), 'b' (1024x?), 'o' (original), default: (500x?)
    per_page: 100,				// [integer]   allowed values: max of 500
    per_row: 4,					// [integer]   used to flag every nth photo (kensoliva)
    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
    callback: null,				// [function]  optional, callback function applied to entire <ul>
    slideIn: true,
	slideDuration: 750,
	loaderText: "Loading photos..." // [function]  optional, preloader text
	
    // PAGING NOTES: jQuery Flickr plug-in does not provide paging functionality, but does provide hooks for a custom paging routine
    // within the <ul> created by the plug-in, there are two hidden <input> tags, 
    // input:eq(0): current page, input:eq(1): total number of pages, input:eq(2): images per page, input:eq(3): total number of images
    
    // SEARCH NOTES: when setting type to 'search' at least one search parameter  must also be passed text, user_id, group_id, or tags
    // SIZE NOTES: photos must allow viewing original size for size 'o' to function, if not, default size is shown
  };
  
	if(o) $.extend(s, o);
	
	return this.each(function(){

		// hide container element, remove alternative content
		var c = $(this);
		c.hide().empty();
					
		// create unordered list to contain Flickr images
		var list = $('<ul class=\"clearfix\">').appendTo(this);
		list.hide();
		
		// add preLoader to container element
		var preLoaderHTML = $("<p class=\"preloader\">"+s.loaderText+"</p>");
		c.append(preLoaderHTML);
		c.show();
			
		var url = $.flickr.format(s);
		
		$.getJSON(url, function(r){

			
			if (r.stat != "ok"){
			
				for (i in r){
					$('<li>').text(i+': '+ r[i]).appendTo(list);
				};
				
			} else {
			
				if (s.type == 'photoset') r.photos = r.photoset;
				
				// add hooks to access paging data
				list.append('<input class="hide" type="hidden" value="'+r.photos.page+'" />');
				list.append('<input class="hide" type="hidden" value="'+r.photos.pages+'" />');
				list.append('<input class="hide" type="hidden" value="'+r.photos.perpage+'" />');
				list.append('<input class="hide" type="hidden" value="'+r.photos.total+'" />');
				
				for (var i=0; i<r.photos.photo.length; i++){
					
					var photo = r.photos.photo[i];
					
					// format thumbnail url
					var t = 'http://farm'+photo['farm']+'.static.flickr.com/'+photo['server']+'/'+photo['id']+'_'+photo['secret']+'_'+s.thumb_size+'.jpg';
					
					// format thumbnail link (modified by kensoliva)
					switch (s.thumb_link){
						case 'flickr':
							//var h = 'http://www.flickr.com/photos/' + photo['owner'] + '/' + photo['id'];
							var h = 'http://www.flickr.com/photos/' + s.user_name + '/' + photo['id'];
							break;
						case 'photo':
							//format link url
							var h = 'http://farm'+photo['farm']+'.static.flickr.com/'+photo['server']+'/'+photo['id']+'_';
							switch (s.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';
							};
							break;
						default:
							var h = 'http://www.flickr.com/photos/' + photo['owner'] + '/'
					};
					
					
					var remainder = (i+1)%s.per_row; //(added by kensoliva)
					if (remainder == 0) {
						list.append('<li class="last"><a href="'+h+'" '+s.attr+'><img class="photo" src="'+t+'" alt="'+photo['title']+'" width="" height="" /></a></li>');
					} else {
						list.append('<li><a href="'+h+'" '+s.attr+'><img class="photo" src="'+t+'" alt="'+photo['title']+'" width="" height="" /></a></li>');
					}
					
				};
				
				if (s.callback) s.callback(list);
				
				// show Flickr photos (modified by kensoliva)
				if (s.slideIn) {
				
					// a fix for the jQuery slide effect
					// Hat-tip: http://blog.pengoworks.com/index.cfm/2009/4/21/Fixing-jQuerys-slideDown-effect-ie-Jumpy-Animation
					var listHeight = list.data("originalHeight");
		
					// get the original height
					if (!listHeight) {
						listHeight = list.show().height();
						list.data("originalHeight", listHeight);
						list.hide().css({height: 0});
					}
					
					$(preLoaderHTML).remove();
					
					list.show().animate({height: listHeight}, s.slideDuration);
					
				} else {
				
					//list.show();
				}
					
			};
				
		});
		
		
	
	});
  
};


// static function to format the flickr API url according to the plug-in settings 
$.flickr = {
    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 'photoset':
                url += '&method=flickr.photosets.getPhotos&photoset_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;
    }
};
})(jQuery);