import 'dotenv/config';

function required(name) {
  const value = String(process.env[name] || '').trim();
  if (!value) {
    throw new Error(`${name} is required`);
  }
  return value;
}

async function main() {
  const token = required('TELEGRAM_BOT_TOKEN');
  const secret = required('TELEGRAM_WEBHOOK_SECRET');
  const baseUrl = required('HF_BACKEND_BASE_URL').replace(/\/+$/, '');
  const webhookUrl = `${baseUrl}/api/telegram/webhook/${secret}`;

  const response = await fetch(`https://api.telegram.org/bot${token}/setWebhook`, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      url: webhookUrl,
      secret_token: secret,
      drop_pending_updates: false,
      allowed_updates: ['message', 'edited_message'],
    }),
  });

  const payload = await response.json().catch(() => ({}));
  if (!response.ok || payload?.ok === false) {
    throw new Error(payload?.description || `setWebhook failed (${response.status})`);
  }

  console.log(
    JSON.stringify(
      {
        ok: true,
        webhook_url: webhookUrl,
        telegram_result: payload.result || true,
      },
      null,
      2
    )
  );
}

main().catch((error) => {
  console.error('Failed to set Telegram webhook:', error?.message || String(error));
  process.exit(1);
});