'use strict';

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: Dashboard
 * (C) Copyright IBM Corp. 2013, 2019
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 *
 * VisModelManager
 * INTENT: VisModelManager object is a top-level manager for the LiveWidgetModel and its sub-managers.
 * It has an api for use by external callers and the renderer.
 * TODO: The functionality in this class should be investigated and moved into more focused sub-objects.
 *
 * The VisModelManager owns VisDataSlots and VisProperties that the renderer pieces render,
 * interactivity modifies and save persists.
 *
 * It also has utilities to ease access for Visualization items to data-oriented actions
 * (like querying/filtering).
 */
define(['underscore', '../../../../lib/@waca/core-client/js/core-client/ui/core/Events'], function (_, Events) {
	'use strict';

	var VisModelManagerLeftover = null; // class declaration

	VisModelManagerLeftover = Events.extend({

		init: function init(options) {
			VisModelManagerLeftover.inherited('init', this, arguments);
			this.content = options.content;
			this.widgetModel = options.widgetModel;
			this.ownerWidget = options.ownerWidget;
			this.dashboardApi = options.dashboardApi;
		},

		/**
  *
  * @returns customDataSelection is enable or not
  */
		_isCustomDataSelectionEnabled: function _isCustomDataSelectionEnabled() {
			return this.dashboardApi.getAppConfig('enableCustomDataSelection') || this.supportsCustomDataSelection();
		},

		supportsCustomDataSelection: function supportsCustomDataSelection() {
			return this.content.getFeature('Visualization').getDefinition().getProperty('supportsCustomDataSelection');
		},

		/**
  *
  * @returns an array of object with the id of the custom data and the value of the decoration
  */
		getCustomDataDecoration: function getCustomDataDecoration(decoration) {
			var decorations = [];
			if (this._isCustomDataSelectionEnabled()) {
				var customData = this.widgetModel.get('customData');
				if (customData && customData[decoration]) {
					customData[decoration].forEach(function (item) {
						decorations.push({
							id: item.id,
							value: item.value
						});
					});
				}
			}
			return decorations;
		},

		/**
  *	Sets a decoration value for a give array of custom data ids.
  * Any other exiting custom data that had that decoration will be cleared.
  * The decorations will be saved in the widget model and persisted.
  * @param {String} decorationName  - decoration name
  * @param {Array} customDataDecorations - array of object that contain the id of the customData and the value of the decoration
  * @param {Object} options - model set options (optional)
  *
  */
		setCustomDataDecoration: function setCustomDataDecoration(decorationName, customDataDecorations, options) {
			if (this._isCustomDataSelectionEnabled() && this._isCustomDataUpdateNeeded(customDataDecorations)) {
				// Save to the widget model
				var idArray = customDataDecorations.map(function (decoration) {
					return {
						id: decoration.id,
						value: decoration.value
					};
				});
				var payload = {};
				payload[decorationName] = idArray;
				this.widgetModel.set({
					'customData': payload
				}, options);
			}
		},

		/**
  * Get all custom data that have the given decoration set
  * @param {String} decorationname
  * @return {Array} array of custom data objects
  	*/
		getDecoratedCustomData: function getDecoratedCustomData(decorationName) {
			var decorations = this.getCustomDataDecoration(decorationName);
			var ids = decorations.map(function (decoration) {
				return decoration.id;
			});
			return this.getCustomData(ids);
		},

		/**
  * Get the custom data Listen
  * @param {Array} ids - optional array of ids to match the custom data
  */
		getCustomData: function getCustomData(ids) {
			var customData = this.ownerWidget.getCustomData() || [];
			// If we have an explicit list of ids, filter the custom data using that list
			if (ids) {
				customData = customData.filter(function (payload) {
					return ids.find(function (id) {
						return id === payload.id;
					});
				});
			}
			return customData;
		},

		/**
   * Verifies if custom data in the model should be updated
   * @param {Map} Map containing custom data
   * @return {Boolean} True if model custom data needs to be updated, false otherwise
   */
		_isCustomDataUpdateNeeded: function _isCustomDataUpdateNeeded(customDataDecorations) {
			var currCustomData = this.widgetModel.get('customData');
			return currCustomData && currCustomData.selected && currCustomData.selected.length || customDataDecorations && customDataDecorations.length;
		}

	});

	return VisModelManagerLeftover;
});
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