"""Уведомления в центр зоотехника по алертам feed_quality."""

from __future__ import annotations

import logging
from typing import Iterable

from app.models.feed_alert import FeedAlert
from app.services.feed_quality.rules import (
    EVENT_LEFT_IN_MIXER,
    EVENT_LOADING_FAST,
    EVENT_LOADING_TIME,
    EVENT_MIX_TIME,
    EVENT_OVERLOAD,
    EVENT_UNDERLOAD,
    SEVERITY_ERROR,
    SEVERITY_WARNING,
    settings_section_for_alert,
)
from app.services.feed_quality.settings_store import get_feed_quality_settings
from app.services.notification_center_service import create_notification, format_detail_timestamp

logger = logging.getLogger(__name__)

_EVENT_TITLES = {
    EVENT_OVERLOAD: "Перегруз при загрузке",
    EVENT_UNDERLOAD: "Недогруз при загрузке",
    EVENT_LOADING_TIME: "Долгая загрузка компонента",
    EVENT_LOADING_FAST: "Быстрая загрузка компонента",
    EVENT_MIX_TIME: "Отклонение смешивания",
    EVENT_LEFT_IN_MIXER: "Остаток в миксере",
}


def _alert_title(alert: FeedAlert) -> str:
    if alert.group_name and alert.event_type in (EVENT_OVERLOAD, EVENT_UNDERLOAD):
        return "Отклонение при выгрузке"
    return _EVENT_TITLES.get(alert.event_type, "Отклонение кормления")


def _alert_detail(alert: FeedAlert) -> str:
    when = format_detail_timestamp(alert.created_at)
    recipe = alert.recipe_name or "рейс"
    return f"Рейс «{recipe}»: {alert.detail} — {when}"


def _should_notify(alert: FeedAlert) -> bool:
    if alert.severity not in (SEVERITY_WARNING, SEVERITY_ERROR):
        return False
    section_key = settings_section_for_alert(
        alert.event_type,
        component_name=alert.component_name,
        group_name=alert.group_name,
    )
    cfg = get_feed_quality_settings().get(section_key) or {}
    if alert.severity == SEVERITY_ERROR:
        return bool(cfg.get("notify_critical", True))
    return bool(cfg.get("notify_warning", True))


def notify_feed_quality_alerts(alerts: Iterable[FeedAlert]) -> int:
    """Создаёт записи в «К» по флагам notify_* в настройках."""
    count = 0
    for alert in alerts:
        if not _should_notify(alert):
            continue
        kind = "error" if alert.severity == SEVERITY_ERROR else "warning"
        try:
            create_notification(
                title=_alert_title(alert),
                detail=_alert_detail(alert),
                kind=kind,
                category="feed_quality",
                page="reports",
                link_kind="report_loading",
                link_id=alert.loading_report_id,
            )
            count += 1
        except Exception:
            logger.exception(
                "[FEED-QUALITY-NOTIFY] alert=%s report=%s",
                alert.id,
                alert.loading_report_id,
            )
    return count