private static void GetOrdersForTimeWindow(
OrdersMonitorApp theApp,
DateTime updatedAfter,
DateTime updatedBefore
)
{
try
{
IMWSResponse response;
ListOrdersResponse listOrdersResponse = null;
ListOrdersByNextTokenResponse listOrdersByNextTokenResponse = null;
string nextTokenFromRequest = null;
OrderList ordersFromRequest;
do
{
// if this is not the first request, get the rest of the request.
if (nextTokenFromRequest != null)
{
Console.WriteLine("Get the next of the data");
response = theApp.InvokeListOrdersByNextToken(nextTokenFromRequest);
listOrdersByNextTokenResponse = (ListOrdersByNextTokenResponse)response;
nextTokenFromRequest = listOrdersByNextTokenResponse.ListOrdersByNextTokenResult.NextToken;
ordersFromRequest = listOrdersByNextTokenResponse.ListOrdersByNextTokenResult.Orders;
}
else
{
// we are making a request for the first time.
response = theApp.InvokeListOrders(updatedAfter, updatedBefore);
listOrdersResponse = (ListOrdersResponse)response;
nextTokenFromRequest = listOrdersResponse.ListOrdersResult.NextToken;
ordersFromRequest = listOrdersResponse.ListOrdersResult.Orders;
}
ResponseHeaderMetadata rhmd = response.ResponseHeaderMetadata;
// We recommend logging the request id and timestamp of every call.
Console.WriteLine("RequestId: " + rhmd.RequestId + "Timestamp: " + rhmd.Timestamp);
using (var db = new OrderContext())
{
foreach (Order order in ordersFromRequest.Order)
{
Console.WriteLine(order.AmazonOrderId + " " + order.PurchaseDate + " " + order.LastUpdateDate);
// is this order already in the database ?
var queryDuplicateCheck = from o in db.Orders
where o.AmazonOrderId == order.AmazonOrderId
select o;
if (order.ShippingAddress != null)
{
if (queryDuplicateCheck.Any())
{
var dbOrder = queryDuplicateCheck.First();
db.Orders.Remove(dbOrder);
db.Orders.Add(order);
}
else
{
db.Orders.Add(order);
}
}
if (!queryDuplicateCheck.Any() && order.ShippingAddress != null)
{
db.Orders.Add(order);
}
}
db.SaveChanges();
}
Thread.Sleep(30000);
} while (nextTokenFromRequest != null);
}
catch (MarketplaceWebServiceOrdersException ex)
{
// Exception properties are important for diagnostics.
ResponseHeaderMetadata rhmd = ex.ResponseHeaderMetadata;
Console.WriteLine("Service Exception:");
if (rhmd != null)
{
Console.WriteLine("RequestId: " + rhmd.RequestId);
Console.WriteLine("Timestamp: " + rhmd.Timestamp);
}
Console.WriteLine("Message: " + ex.Message);
Console.WriteLine("StatusCode: " + ex.StatusCode);
Console.WriteLine("ErrorCode: " + ex.ErrorCode);
Console.WriteLine("ErrorType: " + ex.ErrorType);
}
}
public static void Main(string[] args)
{
// The client application name
const string appName = "OrderHistoryApp";
// The client application version
const string appVersion = "1.0";
// The endpoint for region service and version (see developer guide)
// ex: https://mws.amazonservices.com
const string serviceUrl = "https://mws.amazonservices.com/Orders/2011-01-01";
// Create a configuration object
MarketplaceWebServiceOrdersConfig config = new MarketplaceWebServiceOrdersConfig {
ServiceURL = serviceUrl
};
// Set other client connection configurations here if needed
// Create the client itself
MarketplaceWebServiceOrders.MarketplaceWebServiceOrders client = new MarketplaceWebServiceOrdersClient(AccessKey, SecretKey, appName, appVersion, config);
OrdersMonitorApp ordersMonitorApp = new OrdersMonitorApp(client);
try
{
// response = sample.InvokeGetOrder();
// response = sample.InvokeGetServiceStatus();
// response = sample.InvokeListOrderItems();
// response = sample.InvokeListOrderItemsByNextToken();
DateTime updatedAfterDefault = new DateTime(2014, 7, 20);
DateTime updatedBeforeDefault = DateTime.Now.AddMinutes(-5);
using (var db = new OrderContext())
{
// is this the first time ?
var query = from o in db.Orders orderby o.LastUpdateDate descending select o;
if (query.Any())
{
Console.WriteLine("Results exist in database: " + query.Count());
// although we are using a nullable type, there is no way that we will get a record that has a
// null PurchaseDate. So we are safe here.
DateTime?tempDate = query.First().LastUpdateDate;
DateTime lastUpdate = DateTimeBegin; // silly assignment so we cover the else case.
if (tempDate != null)
{
lastUpdate = (DateTime)tempDate;
}
Console.WriteLine("Last update date is : " + lastUpdate);
GetOrdersForTimeWindow(ordersMonitorApp, lastUpdate, updatedBeforeDefault);
}
else
{
Console.WriteLine("No results exist. Fresh Database.");
// get orders for the time window and save to the database
GetOrdersForTimeWindow(ordersMonitorApp, updatedAfterDefault, updatedBeforeDefault);
}
}
}
catch (Exception ex)
{
throw;
}
}