/*
 * 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($) {
// static function to format the flickr API url according to the plug-in settings 
function format(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;
}

    
$.flickr = function(o, callback) {
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_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: 'm',                 // [string]    allowed values: 'm' (240x?), 'b' (1024x?), 'o' (original), default: (240x?)
    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
    callback: null              // [function]  optional, callback function applied to entire <ul>

    // 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);  
  var url = format(s);
  $.getJSON(url, function(r) {
    var result = [];
    if (s.type == 'photoset') r.photos = r.photoset;               
      for (var i=0; i<r.photos.photo.length; i++){
        var photo = r.photos.photo[i];
        //format image 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'];
              break;
            };
          default:
            h += photo['secret'] + '.jpg';
        };
        result.push({url: h, title: photo['title']});          
      };
      
      
      callback(result);        
    });
	};

})(jQuery);