"""Synology Chat — incoming webhook으로 응답 전송."""

from __future__ import annotations

import json
import logging
import re

import httpx

from config import settings

logger = logging.getLogger(__name__)


def _strip_markdown(text: str) -> str:
    """마크다운 문법 제거 — Synology Chat은 렌더링 안 됨."""
    text = re.sub(r'\*\*(.+?)\*\*', r'\1', text)  # **bold**
    text = re.sub(r'\*(.+?)\*', r'\1', text)       # *italic*
    text = re.sub(r'`(.+?)`', r'\1', text)         # `code`
    text = re.sub(r'^#{1,6}\s+', '', text, flags=re.MULTILINE)  # ### headers
    text = re.sub(r'^\s*[-*]\s+', '• ', text, flags=re.MULTILINE)  # - list → •
    return text


async def send_to_synology(text: str, *, raw: bool = False) -> bool:
    """Incoming webhook URL로 메시지 전송. raw=True면 마크다운 제거 안 함."""
    if not settings.synology_incoming_url:
        logger.warning("Synology incoming URL not configured")
        return False

    if not raw:
        text = _strip_markdown(text)
    payload = json.dumps({"text": text}, ensure_ascii=False)

    try:
        async with httpx.AsyncClient(verify=False, timeout=10.0) as client:
            resp = await client.post(
                settings.synology_incoming_url,
                data={"payload": payload},
            )
            if resp.status_code == 200:
                return True
            logger.error("Synology send failed: %d %s", resp.status_code, resp.text)
            return False
    except Exception:
        logger.exception("Failed to send to Synology Chat")
        return False