/*
 * Copyright (c) 2014 DataTorrent, Inc. ALL Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

'use strict';

angular.module('ui.dashboard')
  .factory('WidgetDefCollection', function () {

    function convertToDefinition(d) {
      if (typeof d === 'function') {
        return new d();
      }
      return d;
    }

    function WidgetDefCollection(widgetDefs) {
      
      widgetDefs = widgetDefs.map(convertToDefinition);

      this.push.apply(this, widgetDefs);

      // build (name -> widget definition) map for widget lookup by name
      var map = {};
      _.each(widgetDefs, function (widgetDef) {
        map[widgetDef.name] = widgetDef;
      });
      this.map = map;
    }

    WidgetDefCollection.prototype = Object.create(Array.prototype);

    WidgetDefCollection.prototype.getByName = function (name) {
      return this.map[name];
    };

    WidgetDefCollection.prototype.add = function(def) {
      def = convertToDefinition(def);
      this.push(def);
      this.map[def.name] = def;
    };

    return WidgetDefCollection;
  });