const config = require('./config');

const tg = config.telegram;
if (!tg || !tg.botToken) {
  module.exports = { sendTelegramMessage: async () => {}, sendTelegramPhoto: async () => {} };
} else {
  const base = `https://api.telegram.org/bot${tg.botToken}`;

  async function sendTelegramMessage(text) {
    await fetch(`${base}/sendMessage`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ chat_id: tg.chatId, text }),
    });
  }

  async function sendTelegramPhoto(buffer, caption) {
    const form = new FormData();
    form.append('chat_id', tg.chatId);
    form.append('photo', new Blob([buffer]), 'qr.png');
    if (caption) form.append('caption', caption);
    await fetch(`${base}/sendPhoto`, { method: 'POST', body: form });
  }

  module.exports = { sendTelegramMessage, sendTelegramPhoto };
}