'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: Dashboard
 * (C) Copyright IBM Corp. 2020
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */

define(['underscore'], function (_) {
	/**
  * Most of Dashboard references the board and widget specs using APIs - but processing on the raw specs before they are deserialized into APIs don't have this advantage. 
  * This utility encapsulates operations which one may be tempted to hand craft, allowing for them to updated in one place, as a poor man's alternative to an API.
  */
	var DashboardSpecUtil = function () {
		function DashboardSpecUtil() {
			_classCallCheck(this, DashboardSpecUtil);
		}

		/**
   * @param {object} layout - a layout from a board spec
   * @return {object[]} the widget models in the given layout
   */
		DashboardSpecUtil.getWidgetModelList = function getWidgetModelList(layout) {
			//extract widget models from widget layouts
			return DashboardSpecUtil._getWidgetList(layout).map(function (widget) {
				return widget && widget.features && widget.features.Models_internal;
			}).filter(function (widgetModel) {
				return !!widgetModel;
			});
		};

		DashboardSpecUtil._getWidgetList = function _getWidgetList(layout) {
			var layouts = [];
			if (layout.type === 'widget') {
				//This layout is a widget - return it
				layouts.push(layout);
			}

			if (layout.items) {
				//Recursively search for widget layouts
				layouts = _.flatten([layouts, layout.items.map(function (item) {
					return DashboardSpecUtil._getWidgetList(item);
				})]);
			}
			return layouts;
		};

		return DashboardSpecUtil;
	}();

	return DashboardSpecUtil;
});
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