// ----------------------------------------------
// File:		GetProductsService.js
// Author:		Nathan Derksen
// Description:	A class that holds the available service methods, along with response handlers.
// Example:
// GetProductsService.getInstance().getProducts(searchCriteria, 0, 12);
// ----------------------------------------------


// ----------------------------------------------
// Function:	GetProductsService
// Author:		Nathan Derksen
// Description:	Base class
// Inputs:		<none>
// Returns:		<nothing>
// ----------------------------------------------
function GetProductsService()
{
}

// ----------------------------------------------
// Function:	GetProductsService.getProducts
// Author:		Nathan Derksen
// Description:	Calls the service to retrieve a set of products
// Inputs:		<Object> searchCriteria - An object of properties to search on
//				<Number> startIndex - The zero-based index of which row to start at in the total results
//				<Number> maxResults - The maximum number of results to return
// Returns:		<nothing>
// ----------------------------------------------
GetProductsService.prototype.getData = function(queryString)
{
	try
	{
		var gridName = URLFactory.extractValue(queryString, "currentProductGrid");
		var currentPage = Number(URLFactory.extractValue(queryString, "currentPage"));
		var sku = ProductModel.getInstance().getSKU();
		var pageQueryString = window.location.search.split("?").join("");
		var sortCriteria = URLFactory.extractValue(queryString, "sortCriteria");
		var relatedItemType = 1;
		var search = false;
		var searchQSVal = URLFactory.extractQueryStringValue(pageQueryString, "search");
		
		if (document.forms[0].relatedItemType)
		{
			relatedItemType = Number(document.forms[0].relatedItemType.value);
		}

		if (searchQSVal == "1")
		{
			search = true;
		}

		if (isAjaxEnabled() == true)
		{
			if (gridName.toLowerCase() == "viewrelated" && sku != "")
			{
				PageMethods.GetRelatedItemsXml(sku, String(currentPage), relatedItemType, this.onResult, this.onError);
			}
			else if (URLFactory.extractQueryStringValue(pageQueryString, "search_params") != "")
			{
				PageMethods.GetItemsXmlBySearchQS(URLFactory.convertHashToServiceHash(queryString), search, this.onResult, this.onError);				
			}
			else if (URLFactory.extractQueryStringValue(pageQueryString, "cid") != "")
			{
				PageMethods.GetItemsXmlByCategoryID(URLFactory.extractQueryStringValue(pageQueryString, "cid"), sku, currentPage, this.onResult, this.onError);
			}
			else
			{
				PageMethods.GetItemsXmlBySku(sku, String(currentPage), this.onResult, this.onError);
			}
		}
	}
	catch (err)
	{
		Debug.error(err);
	}
};

// ----------------------------------------------
// Function:	GetProductsAndCategoriesService.getProducts
// Author:		Nathan Derksen
// Description:	Calls the service to retrieve a set of products
// Inputs:		<Object> searchCriteria - An object of properties to search on
//				<Number> startIndex - The zero-based index of which row to start at in the total results
//				<Number> maxResults - The maximum number of results to return
// Returns:		<nothing>
// ----------------------------------------------
GetProductsService.prototype.getJSONData = function()
{
	try
	{
		var resultProductArray = [];
		if (typeof(tblData) != "undefined")
		{
			resultProductArray = ProductFactory.convertJSONToArray(tblData);
		}
		
		var numHits = 0;
		if (typeof(gridData) != "undefined")
		{
			numHits = gridData.numHits;
		}

		var productsGrid = ViewLocator.getInstance().getView("productsGrid");
		productsGrid.setProducts(resultProductArray);
		
		var model = ProductModel.getInstance();
		model.setNumProducts(numHits);
		model.setProducts(resultProductArray);	
	}
	catch (err)
	{
		Debug.error(err);
	}
};

// ----------------------------------------------
// Function:	GetProductsService.onResult
// Author:		Nathan Derksen
// Description:	Callback from the successful completion of the service call
// Inputs:		<XMLElement> result - Handle to the results xml object
// Returns:		<nothing>
// ----------------------------------------------
GetProductsService.prototype.onResult = function(result)
{
	try
	{
		if (result)
		{
			var resultElements = result.documentElement;
			var resultArray = ProductFactory.convertXMLToArray(resultElements);
			var numHits = ProductFactory.getTotalNumProducts(resultElements);

			var productsGrid = ViewLocator.getInstance().getView("productsGrid");
			productsGrid.setProducts(resultArray);

			var model = ProductModel.getInstance();
			model.setNumProducts(numHits);
			model.setProducts(resultArray);
		}
		else
		{
			var tempArray = new Array();
			var productsGrid = ViewLocator.getInstance().getView("productsGrid");
			productsGrid.setProducts(tempArray);
			
			var error = new Object();
			error.name = "Service 'GetProductsService' returned with no results";
			error.message = error.name;
			error.fileName = "itemPage/GetProductsService.js";
			error.lineNumber = "";
			Debug.error(error);
		}
	}
	catch (err)
	{
		Debug.error(err);
	}
};

// ----------------------------------------------
// Function:	GetProductsService.onError
// Author:		Nathan Derksen
// Description:	Callback from the unsuccessful completion of the service call
// Inputs:		<XMLElement> result - Handle to the results xml object
// Returns:		<nothing>
// ----------------------------------------------
GetProductsService.prototype.onError = function(result)
{
	var tempArray = new Array();
	var productsGrid = ViewLocator.getInstance().getView("productsGrid");
	productsGrid.setProducts(tempArray);
	
	var error = new Object();
	error.name = "Service 'GetProductsService' returned with an error";
	error.message = result.get_message();
	error.fileName = "itemPage/GetProductsService.js";
	error.lineNumber = "";
	Debug.error(error);
};