KonataDev/Konata.Core

// Create a bot instance
var bot = BotFather.Create(config, device, keystore);
{
    // Handle the captcha
    bot.OnCaptcha += (bot, e) =>
    {
        if(e.Type == CaptchaType.Slider)
        {
            Console.WriteLine(e.SliderUrl); 
            bot.SubmitSliderTicket(Console.ReadLine());
        }
        else if(e.Type == CaptchaType.Sms)
        {
            Console.WriteLine(e.Phone); 
            bot.SubmitSmsCode(Console.ReadLine());
        }
    };

    // Print the log
    bot.OnLog += (_, e) 
        => Console.WriteLine(e.EventMessage);

    // Handle group messages
    bot.OnGroupMessage += (_, e) 
        => Console.WriteLine(e.Message); 
    
    // Handle friend messages
    bot.OnFriendMessage += (_, e) 
        => Console.WriteLine(e.Message);
    
    // ... More handlers
}

// Do login
if(!await bot.Login())
{
    Console.WriteLine("Login failed");
    return;
}

Console.WriteLine("We got online!");