"""Telegram notification sender. Uses httpx directly — no bot framework needed
for outbound messages, so we can call it from the scheduler thread without
needing an event loop."""

from __future__ import annotations

import logging

import httpx

from app.config import settings

logger = logging.getLogger(__name__)

TG_API = "https://api.telegram.org"


def send_message(chat_id: str, text: str, parse_mode: str = "HTML") -> bool:
    if not settings.tg_bot_token:
        logger.warning("TG_BOT_TOKEN not set — skipping notification to %s", chat_id)
        return False
    if not chat_id:
        logger.warning("Empty chat_id — skipping notification")
        return False
    url = f"{TG_API}/bot{settings.tg_bot_token}/sendMessage"
    try:
        with httpx.Client(timeout=15.0) as client:
            r = client.post(
                url,
                json={
                    "chat_id": chat_id,
                    "text": text,
                    "parse_mode": parse_mode,
                    "disable_web_page_preview": False,
                },
            )
        if r.status_code != 200:
            logger.error("TG send failed: %s %s", r.status_code, r.text)
            return False
        return True
    except httpx.HTTPError as e:
        logger.error("TG send exception: %s", e)
        return False


def notify_admin(text: str) -> None:
    if settings.admin_chat_id:
        send_message(settings.admin_chat_id, text)