/// <summary>
/// Start Conversation with BOT
/// </summary>
/// <param name="conversationActivityModel"></param>
/// <returns></returns>
private async Task TalkToTheBot(ConversationActivityModel conversationActivityModel)
{
// Connect to the DirectLine service
DirectLineClient client = new DirectLineClient(directLineSecret);
DirectLineConversationStateModel conversationState;
bool wasConnectionExisted;
if (!activeConversationsState.ContainsKey(conversationActivityModel.Id.ToString()))
{
Conversation conversation = await client.Conversations.StartConversationAsync();
conversationState = ConversationActorStateModelMapper(conversation);
activeConversationsState.Add(conversationActivityModel.Id.ToString(), conversationState);
wasConnectionExisted = false;
}
else
{
conversationState = activeConversationsState[conversationActivityModel.Id];
client.Conversations.ReconnectToConversation(conversationState.ConversationId);
wasConnectionExisted = true;
}
await SendActivityToBotAsync(client, conversationState.ConversationId, conversationActivityModel, wasConnectionExisted);
}
/// <summary>
/// Posts the given activity to the bot using Direct Line client and Start Polling the activities from BOT
/// </summary>
/// <param name="client"></param>
/// <param name="conversationId"></param>
/// <param name="conversationActivityModel"></param>
/// <param name="wasConnectionExisted"></param>
/// <returns></returns>
private static async Task SendActivityToBotAsync(DirectLineClient client, string conversationId, ConversationActivityModel conversationActivityModel, bool wasConnectionExisted)
{
// Start the bot message reader in a separate thread.
if (!wasConnectionExisted)
{
new Thread(async() => await PollActivitiesAsync(client, conversationId, conversationActivityModel.Id)).Start();
}
Activity userMessage = new Activity
{
From = new ChannelAccount(conversationActivityModel.UserIdentifier),
Text = conversationActivityModel.MessageText,
Type = ActivityTypes.Message
};
await client.Conversations.PostActivityAsync(conversationId, userMessage);
}
/// <summary>
/// API call to send message to Direct Line BOT
/// </summary>
/// <param name="conversationActivityModel"></param>
/// <returns></returns>
public async Task PostActivityAsync(ConversationActivityModel conversationActivityModel)
{
await TalkToTheBot(conversationActivityModel);
}
