import { NextResponse } from 'next/server';
import TelegramBot from 'node-telegram-bot-api';
import { generateOTP, saveOTP } from '@/lib/otp';

export async function POST() {
  const token = process.env.TELEGRAM_BOT_TOKEN;
  const chatId = process.env.TELEGRAM_CHAT_ID;

  if (!token || !chatId) {
    console.error("Telegram credentials missing");
    return NextResponse.json({ error: 'Telegram not configured' }, { status: 500 });
  }

  const otp = generateOTP();
  saveOTP(otp);

  const bot = new TelegramBot(token, { polling: false });
  try {
    await bot.sendMessage(chatId, `🔐 Your Login Code: ${otp}`);
    return NextResponse.json({ success: true });
  } catch (error: any) {
    console.error('Telegram Error:', error);
    return NextResponse.json({ error: 'Failed to send message: ' + error.message }, { status: 500 });
  }
}