const BOT_TOKEN = process.env.TELEGRAM_BOT_TOKEN ?? "";
const CHAT_ID = process.env.TELEGRAM_CHAT_ID ?? "";

export async function sendTelegramMessage(text: string): Promise<void> {
  if (!BOT_TOKEN || !CHAT_ID) {
    console.warn("[telegram] TELEGRAM_BOT_TOKEN/TELEGRAM_CHAT_ID not set, skipping notification:", text);
    return;
  }

  const url = `https://api.telegram.org/bot${BOT_TOKEN}/sendMessage`;
  const res = await fetch(url, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ chat_id: CHAT_ID, text, parse_mode: "Markdown" }),
  });

  if (!res.ok) {
    console.error("[telegram] failed to send message:", res.status, await res.text());
  }
}