/// <summary>
/// Sends activities to the conversation.
/// </summary>
/// <param name="turnContext">The context object for the turn.</param>
/// <param name="activities">The activities to send.</param>
/// <param name="cancellationToken">A cancellation token that can be used by other objects
/// or threads to receive notice of cancellation.</param>
/// <returns>A task that represents the work queued to execute.</returns>
/// <remarks>If the activities are successfully sent, the task result contains
/// an array of <see cref="ResourceResponse"/> objects containing the SIDs that
/// Twilio assigned to the activities.</remarks>
/// <seealso cref="ITurnContext.OnSendActivities(SendActivitiesHandler)"/>
public override async Task <ResourceResponse[]> SendActivitiesAsync(ITurnContext turnContext, Activity[] activities, CancellationToken cancellationToken)
{
var responses = new List <ResourceResponse>();
foreach (var activity in activities)
{
if (activity.Type != ActivityTypes.Message)
{
_logger.LogTrace(
$"Unsupported Activity Type: '{activity.Type}'. Only Activities of type 'Message' are supported.");
}
else
{
var messageOptions = TwilioHelper.ActivityToTwilio(activity);
var res = await _twilioClient.SendMessageAsync(messageOptions, cancellationToken)
.ConfigureAwait(false);
var response = new ResourceResponse()
{
Id = res,
};
responses.Add(response);
}
}
return(responses.ToArray());
}
/// <summary>
/// Creates a turn context and runs the middleware pipeline for an incoming activity.
/// </summary>
/// <param name="httpRequest">The incoming HTTP request.</param>
/// <param name="httpResponse">When this method completes, the HTTP response to send.</param>
/// <param name="bot">The bot that will handle the incoming activity.</param>
/// <param name="cancellationToken">A cancellation token that can be used by other objects
/// or threads to receive notice of cancellation.</param>
/// <returns>A task that represents the work queued to execute.</returns>
/// <exception cref="ArgumentNullException"><paramref name="httpRequest"/>,
/// <paramref name="httpResponse"/>, or <paramref name="bot"/> is <c>null</c>.</exception>
public async Task ProcessAsync(HttpRequest httpRequest, HttpResponse httpResponse, IBot bot, CancellationToken cancellationToken)
{
if (httpRequest == null)
{
throw new ArgumentNullException(nameof(httpRequest));
}
if (httpResponse == null)
{
throw new ArgumentNullException(nameof(httpResponse));
}
if (bot == null)
{
throw new ArgumentNullException(nameof(bot));
}
Dictionary <string, string> bodyDictionary;
using (var bodyStream = new StreamReader(httpRequest.Body))
{
bodyDictionary =
TwilioHelper.QueryStringToDictionary(await bodyStream.ReadToEndAsync().ConfigureAwait(false));
}
if (_options.ValidateIncomingRequests && !_twilioClient.ValidateSignature(httpRequest, bodyDictionary))
{
throw new AuthenticationException("WARNING: Webhook received message with invalid signature. Potential malicious behavior!");
}
var activity = TwilioHelper.PayloadToActivity(bodyDictionary);
// create a conversation reference
using (var context = new TurnContext(this, activity))
{
context.TurnState.Add("httpStatus", HttpStatusCode.OK.ToString("D"));
await RunPipelineAsync(context, bot.OnTurnAsync, cancellationToken).ConfigureAwait(false);
var statusCode = Convert.ToInt32(context.TurnState.Get <string>("httpStatus"), CultureInfo.InvariantCulture);
var text = context.TurnState.Get <object>("httpBody") != null
? context.TurnState.Get <object>("httpBody").ToString()
: string.Empty;
await TwilioHelper.WriteAsync(httpResponse, statusCode, text, Encoding.UTF8, cancellationToken)
.ConfigureAwait(false);
}
}
