import logging

import httpx

from app.config import get_settings
from app.models import Event, Problem

logger = logging.getLogger(__name__)

SEVERITY_ORDER = {"info": 10, "warning": 20, "high": 30, "critical": 40}


def _severity_value(value: str) -> int:
    return SEVERITY_ORDER.get(value, 0)


def _is_enabled() -> bool:
    settings = get_settings()
    return bool(
        settings.telegram_enabled
        and settings.telegram_bot_token.strip()
        and settings.telegram_chat_id.strip()
    )


def _send_text(message: str) -> None:
    settings = get_settings()
    if not _is_enabled():
        return
    url = f"https://api.telegram.org/bot{settings.telegram_bot_token}/sendMessage"
    payload = {"chat_id": settings.telegram_chat_id, "text": message, "disable_web_page_preview": True}
    try:
        with httpx.Client(timeout=8.0) as client:
            response = client.post(url, json=payload)
            response.raise_for_status()
    except Exception:
        logger.exception("telegram send failed")


def notify_event(event: Event) -> None:
    settings = get_settings()
    min_level = _severity_value(settings.telegram_min_severity)
    if _severity_value(event.severity) < min_level:
        return
    host = event.host.hostname if event.host else "unknown"
    message = (
        f"🚨 SAC событие\n"
        f"Host: {host}\n"
        f"Severity: {event.severity}\n"
        f"Type: {event.type}\n"
        f"Title: {event.title}\n"
        f"Summary: {event.summary}"
    )
    _send_text(message)


def notify_problem(problem: Problem, event: Event | None = None) -> None:
    host = problem.host.hostname if problem.host else "unknown"
    related = ""
    if event is not None:
        related = f"\nEvent: {event.type} ({event.severity})"
    message = (
        f"🔥 SAC Problem opened\n"
        f"Host: {host}\n"
        f"Severity: {problem.severity}\n"
        f"Rule: {problem.rule_id or '-'}\n"
        f"Title: {problem.title}\n"
        f"Summary: {problem.summary}{related}"
    )
    _send_text(message)