public async Task <SimpleReply> SendBotMessage([FromBody] string message)
{
SimpleReply reply = await SendAndRecieveMessageAsync(message);
return(reply);
}
private async Task <SimpleReply> SendAndRecieveMessageAsync(string message)
{
//string userId = HttpContext.Current.Request.Cookies["UserId"].Value;
string userId = "BenEmanuel";
// Connect to the DirectLine service
DirectLineClient client = new DirectLineClient(directLineSecret);
// Try to get the existing Conversation
Conversation conversation;
// Try to get an existing watermark
// the watermark marks the last message we received
string watermark;
if (System.Web.HttpContext.Current.Session["watermark"] == null)
{
watermark = "";
}
else
{
watermark = System.Web.HttpContext.Current.Session["watermark"] as string;
}
if (System.Web.HttpContext.Current.Session["conversation"] == null)
{
// There is no existing conversation
// start a new one
conversation = await client.Conversations.StartConversationAsync();
}
else
{
conversation = System.Web.HttpContext.Current.Session["conversation"] as Conversation;
}
// Use the text passed to the method (by the user)
// to create a new message
Activity userMessage = new Activity
{
From = new ChannelAccount(userId),
Text = message,
Type = ActivityTypes.Message
};
// Post the message to the Bot
await client.Conversations.PostActivityAsync(conversation.ConversationId, userMessage);
// Get the response as a Chat object
//SimpleReply objChat =
// await ReadBotMessagesAsync(client, conversation.ConversationId, watermark);
SimpleReply objChat = new SimpleReply();
objChat.Message = "Hello From Bot";
objChat.FromMessage = message;
objChat.Watermark = "12345";
// Save values
System.Web.HttpContext.Current.Session["conversation"] = conversation;
System.Web.HttpContext.Current.Session["watermark"] = objChat.Watermark;
// Return the response as a Chat object
return(objChat);
}
private async Task <SimpleReply> ReadBotMessagesAsync(
DirectLineClient client, string conversationId, string watermark)
{
// Create an Instance of the Chat object
SimpleReply objChat = new SimpleReply();
// We want to keep waiting until a message is received
bool messageReceived = false;
while (!messageReceived)
{
// Retrieve the activity set from the bot.
var activitySet = await client.Conversations.GetActivitiesAsync(conversationId, watermark);
// Set the watermark to the message received
watermark = activitySet?.Watermark;
// Extract the activies sent from our bot.
var activities = (from Activity in activitySet.Activities
where Activity.From.Id == botId
select Activity).ToList();
// Analyze each activity in the activity set.
foreach (Activity activity in activities)
{
// Set the text response
// to the message text
objChat.Message
+= " "
+ activity.Text.Replace("\n\n", "<br />");
// Are there any attachments?
if (activity.Attachments != null)
{
// Extract each attachment from the activity.
foreach (Attachment attachment in activity.Attachments)
{
switch (attachment.ContentType)
{
case "image/png":
// Set the text response as an HTML link
// to the image
objChat.Message
+= " "
+ attachment.ContentUrl;
break;
}
}
}
}
// Mark messageReceived so we can break
// out of the loop
messageReceived = true;
}
// Set watermark on the Chat object that will be
// returned
objChat.Watermark = watermark;
// Return a response as a Chat object
return(objChat);
}
