/*******************************************************************************
 * IBM Confidential
 * 
 * OCO Source Materials
 * 
 * A and PM: PD
 * 
 * (c) Copyright IBM Corp. 2014
 * 
 * The source code for this program is not published or otherwise divested of
 * its trade secrets, irrespective of what has been deposited with the U.S.
 * Copyright Office.
 ******************************************************************************/

define([
	"dojo/_base/declare", 
	"dojo/store/Memory",
	"dojox/xml/parser",
	"dojo/_base/array",
	"dojo/query"
],function(declare, store, xmlParser, array, query){
	
	var PREVIEW_DATA_SIZE = 50;
	
	var PdDataStore = declare("pd/data/PdDataStore", [store], {
		constructor: function(args) {
			if (!args.xmlInput){
				throw new Error(PDMSG.ERR.IDS_ERR_MISSING_XMLDOC_PARAM);
			}
			
			if (typeof(args.xmlInput) == "string"){
				this.xmlDoc = xmlParser.parse(dojo.trim(args.xmlInput));
			} else {
				this.xmlDoc = args.xmlInput;
			}
			this.xmlDoc.setProperty('SelectionLanguage', 'XPath');
			this.xmlDoc.setProperty('SelectionNamespaces', 'xmlns:d="http://developer.cognos.com/schemas/xmldata/1/"');
			
			args.data = this.generateDataFromXml();
			this.inherited(arguments);
		},
		
		generateDataFromXml: function() {
			var data = [];
			var self = this;
			var numberOfRow = 1;
			  
			var xmlDoc = this.xmlDoc.selectSingleNode("/pdSpec/personalPreview/d:data");
			
			if (xmlDoc != null) {
			
		    	array.some(
					xmlDoc.childNodes, function(rowNode, index, arr){
						if (numberOfRow > PREVIEW_DATA_SIZE) {
							return false;
						}
						numberOfRow++;
						var dataItem = {};
						var n = 0;
	
						array.forEach(
							rowNode.childNodes, function (cellNode) {
								dataItem["col" + n] = cellNode.text;
								n++;
							}
						);
						data.push(dataItem);
					}
				);
			}
	    	return data;
		},
		
		pdGetOriginalStructure: function() {
			var structure = [];
			var xmlDoc = this.xmlDoc.selectSingleNode("/pdSpec/personalData");
			var n = 0;
			
			array.forEach(
				query("item", xmlDoc), function(node, idx, arr){
					var structureItem = {};
					structureItem.name = node.getAttribute("name");
					structureItem.noresize = true;
					structureItem.simpletype = node.getAttribute("simpletype");
					structureItem.regularAggregate = node.getAttribute("regularAggregate");
					structureItem.field = "col" + n;
					structureItem.classes = "pd_idx" + n;
					structureItem.hidden = node.getAttribute("hidden") == "true";
					structure.push(structureItem);
					n++;
				}
			);
			
			return [structure];
		}
	});
	
	return PdDataStore;
});