"""Dispatch ingest notifications per global policy (severity → channels)."""

import logging

from sqlalchemy.orm import Session

from app.models import Event, Problem
from app.services import email_notify, telegram_notify, webhook_notify
from app.services.notification_cooldown import should_notify_event, should_notify_problem
from app.services.notification_policy import get_effective_notification_policy
from app.services.notification_severity import severity_meets_minimum

logger = logging.getLogger(__name__)

LIFECYCLE_EVENT_TYPE = "agent.lifecycle"


def _event_telegram_via_agent(event: Event) -> bool:
    details = event.details if isinstance(event.details, dict) else {}
    via = str(details.get("telegram_via") or "").strip().lower()
    return via == "agent"


def _dispatch_event_channels(event: Event, *, db: Session | None, policy) -> None:
    if policy.use_telegram:
        telegram_notify.notify_event(event, db=db, apply_policy_gate=False)
    if policy.use_webhook:
        webhook_notify.notify_event(event, db=db, apply_policy_gate=False)
    if policy.use_email:
        email_notify.notify_event(event, db=db, apply_policy_gate=False)


def _dispatch_problem_channels(problem: Problem, event: Event | None, *, db: Session | None, policy) -> None:
    if policy.use_telegram:
        telegram_notify.notify_problem(problem, event, db=db, apply_policy_gate=False)
    if policy.use_webhook:
        webhook_notify.notify_problem(problem, event, db=db, apply_policy_gate=False)
    if policy.use_email:
        email_notify.notify_problem(problem, event, db=db, apply_policy_gate=False)


def notify_event(event: Event, *, db: Session | None = None) -> None:
    policy = get_effective_notification_policy(db)
    if not severity_meets_minimum(event.severity, policy.min_severity):
        return
    if not should_notify_event(event, db):
        return
    _dispatch_event_channels(event, db=db, policy=policy)


def notify_problem(problem: Problem, event: Event | None = None, *, db: Session | None = None) -> None:
    policy = get_effective_notification_policy(db)
    if not severity_meets_minimum(problem.severity, policy.min_severity):
        return
    if not should_notify_problem(problem, db):
        return
    _dispatch_problem_channels(problem, event, db=db, policy=policy)


def _dispatch_lifecycle_channels(event: Event, *, db: Session | None, policy) -> None:
    skip_telegram = _event_telegram_via_agent(event)
    if policy.use_telegram and not skip_telegram:
        telegram_notify.notify_event(event, db=db, apply_policy_gate=False)
    if policy.use_webhook:
        webhook_notify.notify_event(event, db=db, apply_policy_gate=False)
    if policy.use_email:
        email_notify.notify_event(event, db=db, apply_policy_gate=False)


def notify_daily_report(event: Event, *, db: Session | None = None) -> None:
    """Оповещение по суточному отчёту (severity=info, вне порога policy)."""
    policy = get_effective_notification_policy(db)
    if not should_notify_event(event, db):
        return
    _dispatch_event_channels(event, db=db, policy=policy)


def notify_lifecycle(event: Event, *, db: Session | None = None) -> None:
    """Старт/стоп/reload агента — всегда в каналы SAC (кроме TG, если telegram_via=agent)."""
    policy = get_effective_notification_policy(db)
    if not should_notify_event(event, db):
        return
    _dispatch_lifecycle_channels(event, db=db, policy=policy)