using Grpc.Net.Client;
using Proto = JOBot.Proto;
using Telegram.Bot;
using Telegram.Bot.Types;
using Microsoft.Extensions.Configuration;

var config = new ConfigurationBuilder()
    .AddJsonFile("appsettings.json")
    .AddJsonFile("appsettings.Development.json", true)
    .Build();

var botClient = new TelegramBotClient(config.GetValue<string>("TelegramToken") 
    ?? throw new MissingFieldException("TelegramToken is not set"));
botClient.StartReceiving(HandleUpdate, HandleError);

Console.WriteLine("Бот запущен. Нажмите Enter для остановки.");
Console.ReadLine();

async Task HandleUpdate(ITelegramBotClient bot, Update update, CancellationToken ct)
{
    using var channel = GrpcChannel.ForAddress(config.GetValue<string>("BackendHost") 
        ?? throw new MissingFieldException("Host is not defined"));
    var userClient = new Proto.User.UserClient(channel);

    if (update.Message?.Text == "/start")
    {
        var reply = await userClient.RegisterAsync(new Proto.RegisterRequest
        {
            UserId = update.Message.Chat.Id,
            Username = update.Message.Chat.Username ?? ""
        });

        await bot.SendMessage(
            chatId: update.Message.Chat.Id,
            text: reply.Success ? "✅ Вы зарегистрированы!" : "❌ Ошибка",
            cancellationToken: ct);
    }
}

Task HandleError(ITelegramBotClient bot, Exception ex, CancellationToken ct)
{
    Console.WriteLine($"Ошибка: {ex.Message}");
    return Task.CompletedTask;
}