"""오늘의 응원가 API — 조회(공개) · Suno 콜백 싱크 · 관리자 수동 생성."""
from __future__ import annotations

from datetime import datetime, timedelta, timezone

from fastapi import APIRouter, Depends, Request
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession

from ..database import get_db
from ..models import Song
from ..services.songs import poll_generating, start_due_songs
from .admin import require_admin

router = APIRouter(prefix="/api/songs", tags=["songs"])

KST = timezone(timedelta(hours=9))


def _song_out(s: Song) -> dict:
    return {
        "matchId": s.match_id,
        "league": s.league,
        "teamCode": s.team_code,
        "teamName": s.team_name,
        "title": s.title,
        "lyrics": s.lyrics,
        "tracks": s.tracks or [],
    }


@router.get("/today")
async def today_songs(league: str = "kbo", db: AsyncSession = Depends(get_db)) -> list[dict]:
    today = datetime.now(KST).date()
    # 업그레이드(라인업 반영 재생성) 중인 곡도 이전 트랙을 계속 서빙 — 재생 공백 없음
    rows = (
        await db.execute(
            select(Song)
            .where(
                Song.league == league,
                Song.date_kst == today,
                Song.status.in_(("complete", "generating")),
            )
            .order_by(Song.match_id, Song.team_code)
        )
    ).scalars().all()
    return [_song_out(s) for s in rows if s.tracks]


@router.post("/callback")
async def suno_callback(request: Request) -> dict:
    """Suno 게이트웨이 callBackUrl 싱크대 — 완료 감지는 워커 폴링이 담당."""
    try:
        await request.json()
    except Exception:  # noqa: BLE001 — 본문 형식 무관
        pass
    return {"ok": True}


@router.post("/generate", dependencies=[Depends(require_admin)])
async def force_generate(db: AsyncSession = Depends(get_db)) -> dict:
    """관리자: 오늘 KBO 전 경기 응원가 즉시 생성 시작 + 폴링 1회."""
    started = await start_due_songs(db, force_today=True)
    done = await poll_generating(db)
    return {"ok": True, "started": started, "completed": done}