/*!
 * Galleria Flickr Plugin v 1.1
 * http://galleria.aino.se
 *
 * Copyright 2010, Aino
 * Licensed under the MIT license.
 */

(function() {
   
    var G = window.Galleria;
    if (typeof G == 'undefined') {
        return;
    }

    var F = G.Flickr = function(api_key) {
        if (!api_key) {
            G.raise('No API key found');
        }
        this.callback = function(){};
        this.api_key = api_key;
        this.options = {
            max: 40,
            size: 'big',
            sort: 'interestingness-desc'
        }
    }

    F.prototype = {
        search: function(params) {
            this._set(arguments);
            return this._find(params);
        },
        getTags: function(str) {
            this._set(arguments);
            return this._find({
                tags: str
            });
        },
        getUser: function(username) {
            var args = arguments;
            return this._call({
                method: 'flickr.urls.lookupUser',
                url: 'flickr.com/photos/'+username
            }, function(data) {
                this._set(args);
                this._find({
                    user_id: data.user.id,
                    method: 'flickr.people.getPublicPhotos'
                });
            });
        },
        getSet: function(photoset_id) {
            this._set(arguments);
            return this._find({
                photoset_id: photoset_id,
                method: 'flickr.photosets.getPhotos'
            });
        },
        getGallery: function(gallery_id) {
            this._set(arguments);
            return this._find({
                gallery_id: gallery_id,
                method: 'flickr.galleries.getPhotos'
            });
        },
        setOptions: function(options) {
            jQuery.extend(this.options, options);
            return this;
        },
        _set: function(args) {
            args = Array.prototype.slice.call(args);
            this.callback = args[2] || args[1];
            if (typeof args[1] == 'object') {
                this.setOptions(args[1]);
            }
            return this;
        },
        _call: function(params, callback) {
            var url = 'http://api.flickr.com/services/rest/?';
            var scope = this;
            params = jQuery.extend({
                format : 'json',
                jsoncallback : '?',
                api_key: this.api_key
            }, params);
            jQuery.each(params, function(key, value) {
                url += '&'+ key + '=' +value;
            });
            jQuery.getJSON(url, function(data) {
                if (data.stat == 'ok') {
                    callback.call(scope, data);
                } else {
                    G.raise(data.code.toString() + ' ' + data.stat + ': ' + data.message);
                }
            });
            return scope;
        },
        _find: function(params) {
            params = jQuery.extend({
                method: 'flickr.photos.search',
                extras: 'url_t, url_m, url_o, url_s, url_l',
                sort: this.options.sort
            }, params);
		
            return this._call(params, function(data) {
                var obj = {
                    length: 0
                };
                var photos = data.photos ? data.photos.photo : data.photoset.photo;
                var len = Math.min(this.options.max, photos.length);
		    
                for (var i=0; i<len; i++) {
                    var photo = photos[i],
                    img = photo.url_m;
                    switch(this.options.size) {
                        case 'small':
                            img = photo.url_s;
                            break;
                        case 'big':
                            if (photo.url_l) {
                                img = photo.url_l;
                            } else if (parseInt(photo.width_o) > 1280) {
                                img = 'http://farm'+photo['farm']+'.static.flickr.com/'+photo['server']+
                                '/'+photo['id']+'_' + photo['secret'] + '_b.jpg';
                            
                            } else if(photo.url_o) {
                                img = photo.url_o;
                            }
                            break;
                        case 'original':
                            if(photo.url_o) {
                                img = photo.url_o;
                            }
                            break;
                    }
                    var item = {
                        thumb: photos[i].url_t,
                        image: img,
                        title: photos[i].title
                    };
                    Array.prototype.push.call(obj, item);
                }
                this.callback.call(this, obj);
            });
        }
    }


    // Static
    F.getFeed = function(type, params) {
	
    }

})();