public async Task<HttpResponseMessage> Send(ChatMessage message)
{
// Do verification that both users can send messages to each other
// For example, they are friends
// Then prepare the toast notification payload
string toastPayload = "<toast> "
+ " <visual>"
+ " <binding template=\"ToastText02\">"
+ " <text id=\"1\">{0}</text>"
+ " <text id=\"2\">{1}</text>"
+ " </binding>"
+ " </visual>"
+ "</toast>";
toastPayload = string.Format(toastPayload, message.FromUsername, message.MessageText);
// Send a Windows 8 toast notification to the "tag"
await hub.SendWindowsNativeNotificationAsync(toastPayload,message.ToUsername);
// Send a raw XML notification to update the UI as well in realtime, if the app is opened
// Serialize the chat message into XML
XmlSerializer xmlSerializer = new XmlSerializer(typeof(ChatMessage));
StringWriter serializedStringWriter = new StringWriter();
xmlSerializer.Serialize(serializedStringWriter, message);
// Send the notification
var rawChatNotification = new WindowsNotification(serializedStringWriter.ToString(), message.ToUsername);
rawChatNotification.Headers.Add("X-WNS-Type", "wns/raw");
rawChatNotification.ContentType = "application/octet-stream";
await hub.SendNotificationAsync(rawChatNotification);
return Request.CreateResponse(HttpStatusCode.OK);
}
private async void sendMessageButton_Click(object sender, RoutedEventArgs e)
{
sendMessageButton.IsEnabled = false;
var message = new ChatMessage
{
FromUsername = yourUsernameTextBox.Text,
ToUsername = toUsernameTextBox.Text,
MessageText = messageTextBox.Text
};
// Add the message to our UI before sending it out
ChatMessages.Add(message);
// Call our server send a message
using (var httpClient = new HttpClient())
{
var serializedBody = JsonConvert.SerializeObject(message);
await httpClient.PostAsync(baseUrl + "/api/chat/send", new StringContent(serializedBody, Encoding.UTF8, "application/json"));
}
// Clean up UI
sendMessageButton.IsEnabled = true;
messageTextBox.Text = string.Empty;
}
