Bot Framework example 3

Readme.md

This was an example demoed at "Building an ecommerce bot using the Microsoft Bot Framework" CodeCamp NYC, Octoboer 2016.

BotController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using Microsoft.Bot.Connector;
using System.Threading.Tasks;

namespace BotDemo.Controllers
{
    public class BotController : ApiController
    {
        /// <summary>
        /// POST: api/Bot
        /// Receive a message from a user and reply to it
        /// </summary>
        public async Task<HttpResponseMessage> Post([FromBody]Activity activity)
        {
            if (activity.Type == ActivityTypes.Message)
            {
                ConnectorClient connector = new ConnectorClient(new Uri(activity.ServiceUrl));
                // calculate something for us to return
                int length = (activity.Text ?? string.Empty).Length;

                StateClient stateClient = activity.GetStateClient();
                BotData userData = await stateClient.BotState.GetUserDataAsync(activity.ChannelId, activity.From.Id);

                if (activity.Text.Contains("hi") || activity.Text.Contains("hello"))
                {
                    Activity reply = activity.CreateReply();
                    reply.Attachments.Add(new Attachment()
                    {
                        ContentUrl = "https://s3.amazonaws.com/alindgren/clayton_sunset.jpg",
                        ContentType = "image/jpg",
                        Name = "Clayton, NY sunset"
                    });
                    await connector.Conversations.ReplyToActivityAsync(reply);
                }
                else
                {
                    // return our reply to the user
                    Activity reply = activity.CreateReply($"You sent {activity.Text} which was {length} characters");
                    await connector.Conversations.ReplyToActivityAsync(reply);
                }
            }
            else
            {
                HandleSystemMessage(activity);
            }
            var response = Request.CreateResponse(HttpStatusCode.OK);
            return response;
        }

        private Activity HandleSystemMessage(Activity message)
        {
            if (message.Type == ActivityTypes.DeleteUserData)
            {
                // Implement user deletion here
                // If we handle user deletion, return a real message
            }
            else if (message.Type == ActivityTypes.ConversationUpdate)
            {
                // Handle conversation state changes, like members being added and removed
                // Use Activity.MembersAdded and Activity.MembersRemoved and Activity.Action for info
                // Not available in all channels
            }
            else if (message.Type == ActivityTypes.ContactRelationUpdate)
            {
                // Handle add/remove from contact lists
                // Activity.From + Activity.Action represent what happened
            }
            else if (message.Type == ActivityTypes.Typing)
            {
                // Handle knowing tha the user is typing
            }
            else if (message.Type == ActivityTypes.Ping)
            {
            }

            return null;
        }
    }
}