private async Task RespondPowerVirtualAgentsBotReplyAsync(DirectLineClient client, RelayConversation currentConversation, ITurnContext <IMessageActivity> turnContext)
{
var retryMax = WaitForBotResponseMaxMilSec / PollForBotResponseIntervalMilSec;
for (int retry = 0; retry < retryMax; retry++)
{
// Get bot response using directlineClient,
// response contains whole conversation history including user & bot's message
ActivitySet response = await client.Conversations.GetActivitiesAsync(currentConversation.ConversationtId, currentConversation.WaterMark);
// Filter bot's reply message from response
List <DirectLineActivity> botResponses = response?.Activities?.Where(x =>
x.Type == DirectLineActivityTypes.Message &&
string.Equals(x.From.Name, _botService.GetBotName(), StringComparison.Ordinal)).ToList();
if (botResponses?.Count() > 0)
{
if (int.Parse(response?.Watermark ?? "0") <= int.Parse(currentConversation.WaterMark ?? "0"))
{
// means user sends new message, should break previous response poll
return;
}
currentConversation.WaterMark = response.Watermark;
await turnContext.SendActivitiesAsync(_responseConverter.ConvertToBotSchemaActivities(botResponses).ToArray());
}
Thread.Sleep(PollForBotResponseIntervalMilSec);
}
}
