/// <summary>
/// This extension only use only <see cref="ITelegramBotClient"/>, no middleware, so it can't prevent handling by other middlewares in your pipeline.
/// </summary>
public static async Task <Message> ReadMessageAsync(
this ITelegramBotClient bot,
ChatId chatId,
NoContextReadCallbackFromType validateType = NoContextReadCallbackFromType.AnyUser
)
{
var tcs = new TaskCompletionSource <Message>(TaskCreationOptions.RunContinuationsAsynchronously);
EventHandler <Args.MessageEventArgs> ev = null;
ev = (s, e) =>
{
var isValid = ValidateMessage(bot, chatId, e.Message, validateType);
if (isValid)
{
bot.OnMessage -= ev;
tcs.TrySetResult(e.Message);
}
};
bot.OnMessage += ev;
return(await tcs.Task);
}
static bool ValidateMessage(ITelegramBotClient bot, ChatId chatId, Message newMsg, NoContextReadCallbackFromType validateType)
{
try
{
if (newMsg.Chat.Id != chatId.Identifier)
{
return(false);
}
if (validateType == NoContextReadCallbackFromType.AnyUserReply)
{
if (newMsg.ReplyToMessage?.From.Id != bot.BotId)
{
return(false);
}
}
return(true);
}
catch
{
return(false);
}
}