-- ============================================================================
-- Phase V2-2: Auth 트리거 + updated_at 자동 갱신
-- ============================================================================

-- ============================================================================
-- handle_new_user: auth.users → public.profiles + public.subscriptions 생성
-- ============================================================================
CREATE OR REPLACE FUNCTION public.handle_new_user()
RETURNS trigger
LANGUAGE plpgsql
SECURITY DEFINER
SET search_path = public
AS $$
BEGIN
  INSERT INTO public.profiles (id, name, avatar_url, locale)
  VALUES (
    NEW.id,
    COALESCE(
      NEW.raw_user_meta_data->>'full_name',
      NEW.raw_user_meta_data->>'name',
      split_part(NEW.email, '@', 1)
    ),
    NEW.raw_user_meta_data->>'avatar_url',
    COALESCE(NEW.raw_user_meta_data->>'locale', 'ko')
  );

  INSERT INTO public.subscriptions (user_id, tier, status)
  VALUES (NEW.id, 'free', 'active');

  RETURN NEW;
END;
$$;

CREATE TRIGGER on_auth_user_created
  AFTER INSERT ON auth.users
  FOR EACH ROW EXECUTE FUNCTION public.handle_new_user();

-- ============================================================================
-- handle_user_deleted: auth.users 삭제 시 cleanup
-- (FK CASCADE로 자동이지만 추가 정리 지점으로 남겨둠)
-- ============================================================================
-- 현재는 FK CASCADE에 의존, 필요 시 확장.

-- ============================================================================
-- moddatetime: updated_at 자동 갱신 트리거 함수
-- ============================================================================
CREATE OR REPLACE FUNCTION public.moddatetime()
RETURNS trigger
LANGUAGE plpgsql
AS $$
BEGIN
  NEW.updated_at = now();
  RETURN NEW;
END;
$$;

-- 각 테이블에 트리거 부착 ----------------------------------------------------
CREATE TRIGGER set_updated_at_profiles
  BEFORE UPDATE ON public.profiles
  FOR EACH ROW EXECUTE FUNCTION public.moddatetime();

CREATE TRIGGER set_updated_at_teams
  BEFORE UPDATE ON public.teams
  FOR EACH ROW EXECUTE FUNCTION public.moddatetime();

CREATE TRIGGER set_updated_at_meetings
  BEFORE UPDATE ON public.meetings
  FOR EACH ROW EXECUTE FUNCTION public.moddatetime();

CREATE TRIGGER set_updated_at_meeting_documents
  BEFORE UPDATE ON public.meeting_documents
  FOR EACH ROW EXECUTE FUNCTION public.moddatetime();

CREATE TRIGGER set_updated_at_transcripts
  BEFORE UPDATE ON public.transcripts
  FOR EACH ROW EXECUTE FUNCTION public.moddatetime();

CREATE TRIGGER set_updated_at_history
  BEFORE UPDATE ON public.history
  FOR EACH ROW EXECUTE FUNCTION public.moddatetime();

CREATE TRIGGER set_updated_at_dictionary
  BEFORE UPDATE ON public.dictionary
  FOR EACH ROW EXECUTE FUNCTION public.moddatetime();

CREATE TRIGGER set_updated_at_subscriptions
  BEFORE UPDATE ON public.subscriptions
  FOR EACH ROW EXECUTE FUNCTION public.moddatetime();

-- ============================================================================
-- increment_daily_usage: Edge Function에서 호출하는 쿼터 증가 헬퍼
-- service_role 전용 (SECURITY DEFINER)
-- ============================================================================
CREATE OR REPLACE FUNCTION public.increment_daily_usage(
  p_user_id uuid,
  p_feature text,
  p_amount integer DEFAULT 1
)
RETURNS integer
LANGUAGE plpgsql
SECURITY DEFINER
SET search_path = public
AS $$
DECLARE
  v_new_count integer;
BEGIN
  INSERT INTO public.daily_usage (user_id, date, feature, count)
  VALUES (p_user_id, CURRENT_DATE, p_feature, p_amount)
  ON CONFLICT (user_id, date, feature)
  DO UPDATE SET count = public.daily_usage.count + p_amount
  RETURNING count INTO v_new_count;

  RETURN v_new_count;
END;
$$;

-- 일반 유저는 호출 불가, service_role만 허용
REVOKE ALL ON FUNCTION public.increment_daily_usage FROM PUBLIC;
REVOKE ALL ON FUNCTION public.increment_daily_usage FROM authenticated;
GRANT EXECUTE ON FUNCTION public.increment_daily_usage TO service_role;