private async Task <Activity> HandleSystemMessage(Activity message)
{
if (message.Type == ActivityTypes.DeleteUserData)
{
// Implement user deletion here
// If we handle user deletion, return a real message
}
else if (message.Type == ActivityTypes.ConversationUpdate)
{
// Handle conversation state changes, like members being added and removed
// Use Activity.MembersAdded and Activity.MembersRemoved and Activity.Action for info
// Not available in all channels
IConversationUpdateActivity update = message;
using (var scope = DialogModule.BeginLifetimeScope(Conversation.Container, message))
{
var client = scope.Resolve <IConnectorClient>();
if (update.MembersAdded.Any())
{
foreach (var newMember in update.MembersAdded)
{
if (newMember.Id == message.Recipient.Id)
{
await RootDialog.SendWelcomeMessage(message);
}
}
}
}
}
else if (message.Type == ActivityTypes.ContactRelationUpdate)
{
// Handle add/remove from contact lists
// Activity.From + Activity.Action represent what happened
}
else if (message.Type == ActivityTypes.Typing)
{
// Handle knowing tha the user is typing
}
else if (message.Type == ActivityTypes.Ping)
{
}
return(null);
}
