'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. 2019
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */

/**
 * @class expandCollapse
 * @hideconstructor
 */
define(['underscore', '../../../lib/@waca/dashboard-common/dist/core/APIFactory', './api/ExpandCollapseAPI'], function (_, APIFactory, expandCollapseAPI) {

	return function () {
		function ExpandCollapse(options) {
			_classCallCheck(this, ExpandCollapse);

			this.dashboard = options.dashboardAPI;
			this.content = options.content;
		}

		ExpandCollapse.prototype.getAPI = function getAPI() {
			if (!this._api) {
				this._api = APIFactory.createAPI(this, [expandCollapseAPI]);
			}
			return this._api;
		};

		ExpandCollapse.prototype.expand = function expand(dataItemId, parentUseValue, currentUseValue) {
			var dataItem = this._getDataItem(dataItemId);
			var transaction = this.dashboard.getFeature('Transaction');
			var transactionToken = transaction.startTransaction();

			var nestedDataItem = void 0;
			if (!dataItem.getUnion().getDataItemList().length) {
				nestedDataItem = dataItem;
			} else {
				nestedDataItem = this._findNestedDataItem(dataItem.getUnion().getDataItemList(), parentUseValue) || dataItem;
			}

			if (!nestedDataItem.getUnion().getDataItemList().find(function (dataItem) {
				return dataItem.getDrillDownValue() === currentUseValue;
			})) {
				var addedUnionDataItem = nestedDataItem.getUnion().addDataItem({ itemId: dataItem.getColumnId() }, transactionToken);
				addedUnionDataItem.drillDown(currentUseValue, transactionToken);
			}
			transaction.endTransaction(transactionToken);
		};

		ExpandCollapse.prototype.collapse = function collapse(dataItemId, parentUseValue, currentUseValue) {
			var dataItem = this._getDataItem(dataItemId);
			var transaction = this.dashboard.getFeature('Transaction');
			var transactionToken = transaction.startTransaction();

			//Find nested Parent dataitem, if it's not found assume its the top level
			var parentDataItem = this._findNestedDataItem(dataItem.getUnion().getDataItemList(), parentUseValue) || dataItem;

			//find Child to remove
			var dataItemToRemove = this._findNestedDataItem(parentDataItem.getUnion().getDataItemList(), currentUseValue);

			if (parentDataItem && dataItemToRemove) {
				dataItemToRemove.clearDrill(transactionToken);
				parentDataItem.getUnion().removeDataItem(dataItemToRemove.getId(), transactionToken);
			}
			transaction.endTransaction(transactionToken);
		};

		ExpandCollapse.prototype._getDataItem = function _getDataItem(dataItemId) {
			var visApi = this.content.getFeature('Visualization');
			var dataItem = visApi.getSlots().getDataItemList().find(function (dataItem) {
				return dataItem.getId() === dataItemId;
			});
			if (!dataItem) {
				throw new Error('Expand Failed, Invalid DataItem');
			}
			return dataItem;
		};

		/*
   * private function to find the nested dataitem from the root array provided
   *
   * @param rootArray Array starting point
   * @param useValue the drill down value of the dataItem to find
   *
   * @return VisDataItemUnionModel
   */


		ExpandCollapse.prototype._findNestedDataItem = function _findNestedDataItem(rootArray, useValue) {
			var queue = Array.from(rootArray);
			var found = null;

			while (queue.length > 0 && !found) {
				var current = queue.shift();
				var children = current.getUnion().getDataItemList();
				queue.push.apply(queue, children || []);
				var currentValue = current.getDrillDownValue();
				if (currentValue === useValue) {
					found = current;
				}
			}
			return found;
		};

		return ExpandCollapse;
	}();
});
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