StateEchoDialog

StateEchoDialog.cs

using System;
using System.Threading.Tasks;
using Microsoft.Bot.Builder.Dialogs;
using Microsoft.Bot.Connector;

namespace DialogDemo.Dialogs
{
    [Serializable]
    public class StateEchoDialog : IDialog<object>
    {
        private const string ResetText = "reset";
        protected int _count;

        #region public

        public async Task StartAsync(IDialogContext context)
        {
            InitCount();
            context.Wait(MessageReceivedAsync);
        }

        public virtual async Task MessageReceivedAsync(IDialogContext context, IAwaitable<IMessageActivity> argument)
        {
            var messageActivity = await argument;
            if (messageActivity.Text == ResetText)
            {
                PromptDialog.Confirm(context,
                    AfterResetAsync,
                    DialogSampleUtil.GetConfirmMessage(nameof(StateEchoDialog)),
                    BotMessage.NotGetThat,
                    promptStyle: PromptStyle.PerLine);
            }
            else
            {
                await context.PostAsync(DialogSampleUtil.GetIncrementedMessage(_count++, messageActivity.Text));
                context.Wait(MessageReceivedAsync);
            }
        }

        #endregion

        #region private

        public async Task AfterResetAsync(IDialogContext context, IAwaitable<bool> argument)
        {
            var confirm = await argument;
            if (confirm)
            {
                InitCount();
                await context.PostAsync(BotMessage.ResetDone);
            }
            else
            {
                await context.PostAsync(BotMessage.ResetCancelled);
            }
            context.Wait(MessageReceivedAsync);
        }

        private void InitCount() => _count = 1;

        #endregion

    }
}