public async Task <bool> Listen()
{
Debug.WriteLine("MessageListenerTask: Listen()");
bool isSuccess = false;
isCanceled = false;
var localSettings = ApplicationData.Current.LocalSettings;
string deviceId = localSettings.Values[DEVICEID_TAG] as string;
string receiverConnectionString = localSettings.Values[IOTHUBRECVCONN_TAG] as string;
DeviceClient deviceClientReceiver = null;
try
{
// https://github.com/Azure/azure-iot-sdks/blob/master/csharp/device/Microsoft.Azure.Devices.Client/DeviceClient.cs
deviceClientReceiver = DeviceClient.CreateFromConnectionString(
receiverConnectionString,
deviceId,
TransportType.Amqp_WebSocket_Only);
}
catch (Exception ex)
{
Debug.WriteLine("MessageListenerTask.Listen Exception: " + ex.Message);
isCanceled = true;
}
_taskInstance.Progress = 0;
while (true)
{
if (isCanceled)
{
break;
}
CheckStopCondition();
CheckPauseCondition();
if (isPaused)
{
await Task.Delay(500);
continue;
}
// To prevent exception happened when network is disconnected abnormally
try
{
Message receivedMessage = await deviceClientReceiver.ReceiveAsync(); // ReceiveAsync(new TimeSpan(0, 0, 30)); // 1 second
if (receivedMessage == null)
{
await Task.Delay(1000);
continue;
}
string messageData = Encoding.ASCII.GetString(receivedMessage.GetBytes());
var resultData = JsonConvert.DeserializeObject <ReceivedData>(messageData);
await deviceClientReceiver.CompleteAsync(receivedMessage);
HotZoneInfo zoneInfo = null;
try
{
zoneInfo = promotionList[resultData.ProductId];
}
catch
{ }
if (zoneInfo == null)
{
zoneInfo = promotionList["default"];
}
string msg = zoneInfo.ZoneDesc
+ "\n" + _taskInstance.Progress + " " + resultData.ProductId + " " + resultData.SendTimestamp.ToLocalTime();
ApplicationData.Current.LocalSettings.Values[_taskInstance.Task.Name + NOTIFICATION_TAG] = msg;
Debug.WriteLine("MessageListenerTask Got Message: " + msg);
uint progressVal = (_taskInstance.Progress + 1) % 100;
if (progressVal == 0)
{
progressVal = 1;
}
_taskInstance.Progress = progressVal;
ToastPromotionInfo(resultData.ProductId, null);
}
catch (Exception ex)
{
Debug.WriteLine("MessageListenerTask: " + ex.Message);
await Task.Delay(1000);
}
}
isCanceled = false;
return(isSuccess);
}
private void ToastPromotionInfo(string promotionKey, string dbgmsg)
{
string appTitle = Windows.ApplicationModel.Package.Current.DisplayName;
HotZoneInfo zoneInfo = null;
try
{
zoneInfo = promotionList[promotionKey];
}
catch (Exception)
{ }
if (zoneInfo == null)
{
zoneInfo = promotionList["default"];
}
var promotionUrls = zoneInfo.PromotionUrls;
var promotionUrl = promotionUrls[0];
if (lastPromotionUrl != null)
{
foreach (var purl in promotionUrls)
{
if (purl[1].CompareTo(lastPromotionUrl) != 0)
{
promotionUrl = purl;
break;
}
}
}
string promotionMsg = promotionUrl[0];
string url = promotionUrl[1];
lastPromotionUrl = url;
try
{
string xmlPayload =
"<toast duration=\"long\" launch=\"" + url + "\">" + "\n"
+ "<visual>" + "\n"
+ "<binding template=\"ToastGeneric\">" + "\n"
+ "<text>" + appTitle + "</text>" + "\n"
+ "<text>" + zoneInfo.ZoneDesc + "</text>" + "\n"
+ ((dbgmsg == null) ?
("<text>" + promotionMsg + "</text>" + "\n")
: ("<text>" + dbgmsg + ";" + promotionMsg + "</text>" + "\n"))
+ "<image placement=\"appLogoOverride\" src=\"Assets/product-logo.png\" />" + "\n"
+ "</binding>" + "\n"
+ "</visual>" + "\n"
//+ "<actions>" + "\n"
//+ "<action activationType=\"foreground\" content=\"View Promotion\" arguments=\"" + url + "\" />" + "\n"
//+ "</actions>" + "\n"
+ "</toast>" + "\n";
// Create an XML document from the XML.
var toastDOM = new Windows.Data.Xml.Dom.XmlDocument();
toastDOM.LoadXml(xmlPayload);
// Prepare to raise the toast.
var toastNotifier = ToastNotificationManager.CreateToastNotifier();
// Raise the toast immediately.
var toast = new ToastNotification(toastDOM);
toastNotifier.Show(toast);
}
catch (Exception ex)
{
Debug.WriteLine("Toast: " + ex.Message);
}
}
public bool OneshotProcess(short?filterInRange, short?filterOutRange)
{
Debug.WriteLine("MessageListenerTask: OneshotProcess()");
bool isSuccess = false;
var localSettings = ApplicationData.Current.LocalSettings;
string eventMessages = localSettings.Values[BTWATCHERTASK_TAG] as string;
string inrangeList = localSettings.Values[CURRENTINRANGE_TAG] as string;
string beaconPrefix = localSettings.Values[BEACONPREFIX_TAG] as string;
List <string> inrangeDevices = null;
string productId = null;
string dbgmsg = null;
try
{
short inrangeValue = ((filterInRange != null)? filterInRange.Value : (short)-127);
short outrangeValue = ((filterOutRange != null)? filterOutRange.Value : (short)-127);
if (inrangeList == null)
{
inrangeDevices = new List <string>();
}
else
{
inrangeDevices = new List <string>(inrangeList.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries));
}
string[] events = eventMessages.Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
foreach (var singleevent in events)
{
if (singleevent.Length == 0)
{
continue;
}
try
{
string[] fields = singleevent.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (fields == null || fields.Length < 3)
{
continue;
}
string beaconId = fields[0];
short signalStrength = 0;
short.TryParse(fields[1], out signalStrength);
//if (beaconId.Substring(0, beaconPrefix.Length) != beaconPrefix)
// continue;
if (inrangeDevices.Contains(beaconId))
{
if (signalStrength <= outrangeValue)
{
inrangeDevices.Remove(beaconId);
//dbgmsg += ";-" + beaconId + "("+ signalStrength + ")";
}
}
else
{
if (signalStrength > inrangeValue)
{
if (productId == null)
{
productId = "Product" + beaconId.Substring(beaconPrefix.Length, 2);
inrangeDevices.Add(beaconId);
//dbgmsg += ";+" + beaconId;
}
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}
inrangeList = "";
foreach (var device in inrangeDevices)
{
inrangeList += device + " ";
}
localSettings.Values[CURRENTINRANGE_TAG] = inrangeList;
//dbgmsg += ";" + inrangeDevices.Count + ")" + inrangeList;
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
if (productId == null)
{
return(true);
}
// To prevent exception happened when network is disconnected abnormally
try
{
HotZoneInfo zoneInfo = null;
try
{
zoneInfo = promotionList[productId];
}
catch
{ }
if (zoneInfo == null)
{
zoneInfo = promotionList["default"];
}
if (_taskInstance != null)
{
// string msg = "[" + _taskInstance.Progress + "] " + ((messageData == null) ? "" : messageData);
string msg = zoneInfo.ZoneDesc
+ "\n" + _taskInstance.Progress + " " + productId + " " + DateTime.Now.ToLocalTime();
ApplicationData.Current.LocalSettings.Values[_taskInstance.Task.Name + NOTIFICATION_TAG] = msg;
Debug.WriteLine("MessageListenerTask Got Message: " + msg);
_taskInstance.Progress = 100;
}
ToastPromotionInfo(productId, dbgmsg);
isSuccess = true;
}
catch (Exception ex)
{
Debug.WriteLine("MessageListenerTask: " + ex.Message);
}
return(isSuccess);
}
