'use strict';

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: Dashboard
 * (C) Copyright IBM Corp. 2017, 2019
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 *
 */
define(['../../../lib/@waca/dashboard-common/dist/core/Model', 'jquery', './CommonQueryBuilder', './QueryResultData'], function (Model, $, CommonQueryBuilder, QueryResultData) {
	'use strict';

	/**
  * @classdesc A helper class to build and execute queries.
  * APIs included in this class:
  * 1. whenSingleItemQueryReady - build and run single item query with pageContext and search term.
  * 2. whenColumnsMinMaxQueryReady - build and run minmax query from a column.
  * 3. whenDataItemsMinMaxQueryReady - build and run minmax query from an array of dataItems.
  * 4. getRootMembers - build and run query to get root members of a hierarchy.
  * 5. getChildren - build and run query to get children of a hierarchy or level with a memberUniqueName.
  * 6. getSiblings - build and run query to get siblings of a hierarchy or level with a memberUniqueName.
  * 7. getAscendants - build and run query to get ascendants of a hierarchy with a set of memberUniqueNames.
  *
  * Common parameters used in the APIs:
  * @param {Object}  sourceIdOrModule - mandatory: The sourceId or the module object for which we're running queries against
  * @param {Object}  queryContext - optional: the query context that may includes pageContext, searchTerm, etc.
  * @param {Object}  queryContext.pageContext - optional: the netPageContext.
  * @param {Object}  queryDefinition - mandatory: the query definitions used to build the query spec.
  * @param {Object}  queryDefinition.sort - optional: indicate if sort option for the item query.
  * @param {Object}  queryDefinition.limit -	optional: the result limit, i.e. how many rows to return.
  */

	var CommonQueryHelper = Model.extend({

		// Constant to decide the prompt priority
		'BASE_PROMPT_WEIGHT': 0,
		'SIGNON_PROMPT_WEIGHT': 100,

		init: function init(options, logger) {
			CommonQueryHelper.inherited('init', this, arguments);
			this.logger = logger;
		},

		getVesion: function getVesion() {
			return 'endor';
		},

		/**
   * Execute a query for a specific column or data item.
   * @param {Object}  queryDefinition.column - optional: the column definition includes columnId. Note: column is mandatory if dataItems is not provided.
   * @param {Object}  queryDefinition.dataItems -	optional: required if queryDefinition doesn't have column.
   * @param {String}  queryContext.searchTerm - optional: the search string used to refine the query result.
   */
		whenSingleItemQueryReady: function whenSingleItemQueryReady(sourceIdOrModule, queryDefinition, queryContext) {
			var oQuerySpec = CommonQueryBuilder.buildSingleItemQuery(queryDefinition, queryContext, this.logger);
			return this._runQuery(sourceIdOrModule, oQuerySpec);
		},

		/**
   * Execute minmax query of a specific column. The result of the query is pre-aggregated minmax values without any other context.
   * To get context dependent minmax values, please call whenDataItemsMinMaxQueryReady.
   * @param {Object}  queryDefinition.column - mandatory: the column to get the minmax values.
   * @example
   * queryDefinition:
   * {
  	 *    column: {
   *			columnId: 'Sheet1.Revenue'
   *	  }
   * };
   *
   */
		whenColumnsMinMaxQueryReady: function whenColumnsMinMaxQueryReady(sourceIdOrModule, queryDefinition, queryContext) {
			var oQuerySpec = CommonQueryBuilder.buildMinMaxQueryFromColumns(queryDefinition, queryContext, this.logger);
			return this._runQuery(sourceIdOrModule, oQuerySpec);
		},

		/**
   * Execute minmax query with dataitems and projections definitions.
   * @param {Object}  queryDefinition.dataItems -	mandatory: each dataitem definition should provide an 'aggregate' if this dataitem is to get minmax values.
   * @param {Object}  queryDefinition.projections -	mandatory: the projections should only includes the dataitem ids requesting the minmax values.
   * @example
   * queryDefinition:
   * {
   *	  'dataItems': [
   *	     {
   *	       'id': 'Sheet1.Product_line',
   *	       'itemId': 'Sheet1.Product_line',
   *	       'itemLabel': 'Product line'
   *	     },
   *	     {
   *	       'id': 'Sheet1.Quantity',
   *	       'itemId': 'Sheet1.Quantity',
   *	       'itemLabel': 'Quantity',
   *	       'aggregate': 'sum'
   *       },
   *	     {
   *	       'id': 'Sheet1.Unit_cost',
   *	       'itemId': 'Quantity',
   *	       'itemLabel': 'Unit cost',
   *	       'aggregate': 'sum'
   *	     }
   *	   ],
   *	   'projections': [
   *       'Sheet1.Quantity',
   *	     'Sheet1.Unit_cost'
   *	   ]
   * };
   * The minmax result will have 2 set of minmax values, one for Sheet1.Quantity, and one for Sheet1.Unit_cost
   *
   */
		whenDataItemsMinMaxQueryReady: function whenDataItemsMinMaxQueryReady(sourceIdOrModule, queryDefinition, queryContext) {
			var oQuerySpec = CommonQueryBuilder.buildMinMaxQueryFromDataItems(queryDefinition, queryContext, this.logger);
			return this._runQuery(sourceIdOrModule, oQuerySpec);
		},

		/**
   * Execute functional query.
   * @param {Object}  queryDefinition.dataItems - mandatory: dataItems definitions of the query spec.
   */
		_runFunctionQuery: function _runFunctionQuery(sourceIdOrModule, queryDefinition, queryContext) {
			var queryDefinition_1 = {
				'dataItems': queryDefinition.dataItems,
				'projections': CommonQueryBuilder.buildProjections(queryDefinition, this.logger)
			};
			return this.whenSingleItemQueryReady(sourceIdOrModule, queryDefinition_1, queryContext, this.logger);
		},

		/**
   * @param {Object}  queryDefinition.column - mandatory: the hierarchy column used to build dataItems and projections in query spec.
   * @example
   * queryDefinition:
   * {
   *   column: {columnId: '[hierarchyUniqueName]'},
  	 *   limit: 51
   * };
   */
		getRootMembers: function getRootMembers(sourceIdOrModule, queryDefinition, queryContext) {
			var functionDefinitions = {
				'functionName': 'rootMembers',
				'functionParameter': 'true'
			};
			var dataItems = CommonQueryBuilder.buildFunctionQueryDataItems(queryDefinition, functionDefinitions);
			queryDefinition.dataItems = dataItems;
			return this._runFunctionQuery(sourceIdOrModule, queryDefinition, queryContext);
		},

		/**
   * @param {Object}  queryDefinition.column -	mandatory: the column used to build dataItems and projections in query spec.
   * @param {Object}  queryDefinition.mun -	mandatory: the member unique name of the function query.
   * @example
   * queryDefinition:
  	 * {
  	 *   column: {columnId: '[hierarchyUniqueName]'},
  	 *   limit: 51,
  	 *	 mun: '[memberUniqueName]'
  	 * };
   */
		getChildren: function getChildren(sourceIdOrModule, queryDefinition, queryContext) {
			var functionDefinitions = {
				'functionName': 'children',
				'functionParameter': queryDefinition.mun
			};
			var dataItems = CommonQueryBuilder.buildFunctionQueryDataItems(queryDefinition, functionDefinitions);
			queryDefinition.dataItems = dataItems;
			return this._runFunctionQuery(sourceIdOrModule, queryDefinition, queryContext);
		},

		/**
   * @see getChildren.
   */
		getSiblings: function getSiblings(sourceIdOrModule, queryDefinition, queryContext) {
			var functionDefinitions = {
				'functionName': 'siblings',
				'functionParameter': queryDefinition.mun
			};
			var dataItems = CommonQueryBuilder.buildFunctionQueryDataItems(queryDefinition, functionDefinitions);
			queryDefinition.dataItems = dataItems;
			return this._runFunctionQuery(sourceIdOrModule, queryDefinition, queryContext);
		},

		/**
   * @param {Object}  queryDefinition.muns -	mandatory: an array of member unique names.
   * @example
   * queryDefinition:
   * {
   *   column: {columnId: '[hierarchyUniqueName]'},
   *   limit: 51,
   *	 mun: ['[memberUniqueName1]',
   *				  '[memberUniqueName2]']
   * };
   */
		getAscendants: function getAscendants(sourceIdOrModule, queryDefinition, queryContext) {
			var functionDefinitions = {
				'functionName': 'ascendants',
				'functionParameter': queryDefinition.muns
			};
			var dataItems = CommonQueryBuilder.buildFunctionQueryDataItems(queryDefinition, functionDefinitions);
			queryDefinition.dataItems = dataItems;
			return this._runFunctionQuery(sourceIdOrModule, queryDefinition, queryContext);
		},

		extactListOfQueryResultData: function extactListOfQueryResultData(oQueryResultData) {
			var resultRowSize = oQueryResultData.getDatapointCount();
			var aResults = [];

			for (var rowIndex = 0; rowIndex < resultRowSize; rowIndex++) {
				var value = oQueryResultData.getCellValue(rowIndex, 0)[0];
				aResults.push(value);
			}
			return aResults;
		},

		_runQuery: function _runQuery(sourceIdOrModule, oQuerySpec) {
			var queryOptions = {
				'querySpec': oQuerySpec,
				'sourceIdOrModule': sourceIdOrModule
			};
			return this.queryService.runQuery(queryOptions).then(function (queryResponses) {
				return new QueryResultData(queryResponses.data);
			});
		}

	});

	return CommonQueryHelper;
});
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