/// <summary>
/// Does the work.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public override void DoWork(object sender, ElapsedEventArgs e)
{
bool isDataConnectionAvailable = false;
try
{
// Disable and wait until finish execution
this.timer.Enabled = false;
messenger = messengerService.Messenger;
if (messenger == null)
{
return;
}
if (logger.IsInfoEnabled)
{
logger.Info("Checking unprocessed message");
}
// Get unprocessed messages
List <IncomingMessage> unProcessedMsgs = database.IncomingMesages.Where(msg => msg.Status == IncomingMessage.ProcessingStatus.NotProcessed).ToList <IncomingMessage>();
if (unProcessedMsgs.Count > 0)
{
logger.Info("Processing " + unProcessedMsgs.Count + " messages");
foreach (IncomingMessage msg in unProcessedMsgs)
{
MessageInformation msgInfo = EntityHelper.FromCommonRepresentation <MessageInformation>(msg.MsgContent);
logger.Info("Processing message from " + msgInfo.PhoneNumber);
// Check for matching employee
string employeeID = msgInfo.Content;
Employee employee = database.Employees.Find(employeeID);
Gateway gateway = database.Gateways.Find(GlobalConstants.DefaultGatewayID);
if (employee != null && gateway != null)
{
if (messenger.InitializeDataConnection())
{
isDataConnectionAvailable = true;
// Send MMS
Mms mms = Mms.NewInstance(employee.EmployeeName, gateway.GatewayPhoneNumber);
// Multipart mixed
mms.MultipartRelatedType = MultimediaMessageConstants.ContentTypeApplicationMultipartMixed;
mms.PresentationId = "<0000>";
mms.TransactionId = EntityHelper.GenerateGuid();
mms.AddToAddress(msgInfo.PhoneNumber, MmsAddressType.PhoneNumber);
MultimediaMessageContent multimediaMessageContent = new MultimediaMessageContent();
multimediaMessageContent.SetContent(employee.EmployeePhoto, 0, employee.EmployeePhoto.Length);
multimediaMessageContent.ContentId = EntityHelper.GenerateGuid();
multimediaMessageContent.Type = employee.PhotoImageType;
mms.AddContent(multimediaMessageContent);
if (messenger.Send(mms))
{
msg.Status = IncomingMessage.ProcessingStatus.Processed;
}
else
{
msg.Status = IncomingMessage.ProcessingStatus.Error;
msg.ErrorMsg = messenger.LastError.Message;
}
database.SaveChanges();
}
else
{
logger.Error("Unable to establish a data connection through the modem. Check if you modem support MMS");
if (messenger.LastError != null)
{
logger.Error(messenger.LastError.ToString());
}
}
}
else
{
// Employee not found
msg.Status = IncomingMessage.ProcessingStatus.Error;
msg.ErrorMsg = "Employee not found";
database.SaveChanges();
}
}
}
}
catch (Exception ex)
{
logger.Error("Error polling messages", ex);
}
finally
{
if (isDataConnectionAvailable)
{
messengerService.StartMessenger();
}
this.timer.Enabled = true;
}
}