/// <summary>
/// Interrupt a dialog stack with a new dialog, following rules for sending interrupt and resume events.
/// </summary>
public static async Task InterruptAsync <T>(this IDialogSystem system, IDialogStack stack, IDialog <T> dialog, CancellationToken token)
{
if (!system.DialogTasks.Contains(stack))
{
throw new ArgumentOutOfRangeException(nameof(stack));
}
// send the interruption event
system.Post(MakeEvent(new InterruptDialogEvent()));
await system.PollAsync(token);
var interrupter =
// when the dialog is done
dialog
// task boundary: catch all exceptions
.DefaultIfException()
// task boundary: catch all events
.WithEventIgnore();
// Chain.PostToChain is two frames - yuck?
if (stack.Frames.Count > 2)
{
// post the resume dialog event to the queue
interrupter = interrupter.PostEvent(new ResumeDialogEvent());
}
// ignore/void the result, and then resume the interrupted wait
var voided = interrupter.Void(stack);
// start the interrupting dialog
stack.Call(voided, null);
// run the task until the next wait
await system.PollAsync(token);
}
protected override Task PostAsync(IActivity item, string state, CancellationToken token)
{
var message = item as IMessageActivity;
var dialog = new AccountSelectDialog();
var interruption = dialog.Void(_stack);
_stack.Call(interruption, null);
return(Task.CompletedTask);
}
public static async Task StartSurvey(ResumptionCookie cookie, CancellationToken token)
{
var container = WebApiApplication.FindContainer();
// the ResumptionCookie has the "key" necessary to resume the conversation
var message = cookie.GetMessage();
ConnectorClient client = new ConnectorClient(new Uri(message.ServiceUrl));
try
{
var conversation = await client.Conversations.CreateDirectConversationAsync(message.Recipient, message.From);
message.Conversation.Id = conversation.Id;
}
catch (HttpOperationException ex)
{
var reply = message.CreateReply();
reply.Text = ex.Message;
await client.Conversations.SendToConversationAsync(reply);
return;
}
// we instantiate our dependencies based on an IMessageActivity implementation
using (var scope = DialogModule.BeginLifetimeScope(container, message))
{
// find the bot data interface and load up the conversation dialog state
var botData = scope.Resolve <IBotData>();
await botData.LoadAsync(token);
// resolve the dialog stack
IDialogStack stack = stack = scope.Resolve <IDialogStack>();
// make a dialog to push on the top of the stack
var child = scope.Resolve <SurveyDialog>();
// wrap it with an additional dialog that will restart the wait for
// messages from the user once the child dialog has finished
var interruption = child.Void <object, IMessageActivity>();
try
{
// put the interrupting dialog on the stack
stack.Call(interruption, null);
// start running the interrupting dialog
await stack.PollAsync(token);
}
finally
{
// save out the conversation dialog state
await botData.FlushAsync(token);
}
}
}
async Task IDialogStack.Forward <R, T>(IDialog <R> child, ResumeAfter <R> resume, T item, CancellationToken token)
{
IDialogStack stack = this;
stack.Call(child, resume);
await stack.PollAsync(token);
await(this as IPostToBot).PostAsync(item, token);
}
protected override Task PostAsync(IActivity item, string state, CancellationToken token)
{
var activity = item as IMessageActivity;
var dialog = new ScorableSupportDialog();
var interruption = dialog.Void(DialogStackObject);
DialogStackObject.Call(interruption, null);
return(Task.CompletedTask);
}
protected override async Task PostAsync(IActivity item, string state, CancellationToken token)
{
var message = item as IMessageActivity;
var dialog = new HelpDialog((Activity)message);
var interruption = dialog.Void(stack);
stack.Call(interruption, null);
}
// Actions to be performed
protected override Task PostAsync(IActivity item, string state, CancellationToken token)
{
var message = item as IMessageActivity;
var dialog = new ScorableWhoamiDialog();
var interruption = dialog.Void(stack);
stack.Call(interruption, null);
return(Task.CompletedTask);
//context.Call(new EchoCounter(), this.ResumeAfterEchoCounterDialog);
}
async Task IDialogStack.Forward <R, T>(IDialog <R> child, ResumeAfter <R> resume, T item, CancellationToken token)
{
// put the child on the stack
IDialogStack stack = this;
stack.Call(child, resume);
// run the loop
IEventLoop loop = this;
await loop.PollAsync(token);
// forward the item
this.fiber.Post(item);
// run the loop again
await loop.PollAsync(token);
}
public static async Task StartSurvey(ResumptionCookie cookie, CancellationToken token)
{
var container = WebApiApplication.FindContainer();
// the ResumptionCookie has the "key" necessary to resume the conversation
var message = cookie.GetMessage();
// we instantiate our dependencies based on an IMessageActivity implementation
using (var scope = DialogModule.BeginLifetimeScope(container, message))
{
// find the bot data interface and load up the conversation dialog state
var botData = scope.Resolve <IBotData>();
await botData.LoadAsync(token);
// resolve the dialog stack
IDialogStack stack = stack = scope.Resolve <IDialogStack>();
// make a dialog to push on the top of the stack
var child = scope.Resolve <SurveyDialog>();
// wrap it with an additional dialog that will restart the wait for
// messages from the user once the child dialog has finished
var interruption = child.Void <object, IMessageActivity>();
try
{
// put the interrupting dialog on the stack
stack.Call(interruption, null);
// start running the interrupting dialog
await stack.PollAsync(token);
}
finally
{
// save out the conversation dialog state
await botData.FlushAsync(token);
}
}
}
private void Authenticate(IDialogStack context, bool retry)
{
var dialog = retry ? FormDialog.FromForm(BuildRetryForm, FormOptions.PromptInStart) : FormDialog.FromForm(BuildForm, FormOptions.PromptInStart);
context.Call(dialog, ResumeAfterAutentication);
}
/// <summary>
/// Call this dialog by interrupting the stack.
/// </summary>
/// <remarks>
/// This method helps us avoid a closure with environment capture in <see cref="WithConfirmOnResume"/>.
/// </remarks>
public async Task Action(ResumeDialogEvent @event, IDialogStack stack, CancellationToken token)
{
stack.Call(this.Void(stack), null);
}
