using System.Threading.Tasks;
using Telegram.Bot;

namespace Bot.Engine.Console
{
    public class Program
    {
        Api bot;
        string botToken = "BOT_TOKEN";

        public static void Main(string[] args)
        {
            Task.Run(() => RunBot(botToken));

            System.Console.ReadLine();
        }


        /// <summary>
        /// 
        /// </summary>
        public static async Task RunBot(string botToken)
        {
            #region راه اندازی ربات

             bot = new Api(botToken);
            var me = await bot.GetMe();
            if (me != null)
            {
                System.Console.WriteLine("bot started {0}", me.Username);
            }
            else
            {
                System.Console.WriteLine("get bot failed ");
            }

          
            #endregion

            #region شروع گوش دادن به درخواست‌ها var whileCount = 0;
            var offset = 0;

            while (true)
            {
                System.Console.WriteLine("while no {0}", whileCount);

                whileCount += 1;
                try
                {
                    var updates = await bot.GetUpdatesAsync(offset);
                    var updatesCount = updates.Count();
                    System.Console.WriteLine("updates count is {0}", updatesCount);
                    System.Console.WriteLine("================================================================");

                    if (updatesCount > 0)
                    {
                        foreach (var update in updates)
                        {
                            try
                            {
                                offset = update.Id + 1;
                                if (update.Message.Text!=null)
                                {
                                    //echo msg
                                    await bot.SendTextMessageAsync(update.Message.Chat.Id, update.Message.Text);
                                }
                                else
                                {
                                    await bot.SendTextMessageAsync(update.Message.Chat.Id, "لطفا یک پیام متنی بفرستید");
                                }

                            }
                            catch (Exception ex)
                            {
                                bot.SendTextMessage(update.Message.Chat.Id, ex.ToString());
                            }
                        }
                        continue;
                    }


                }
                catch (Exception ex)
                {
                    System.Console.WriteLine("Error Msg = {0}",ex.Message);
                }

            }

            #endregion
        }

    }
}