"""
Archive Worker 모듈

아카이브 관련 백그라운드 작업을 처리합니다.
- 소프트 삭제 (is_deleted=True 설정)
"""

from sqlalchemy import func, select, update

from app.database.session import BackgroundSessionLocal
from app.home.models import Image, Project
from app.lyric.models import Lyric
from app.song.models import Song, SongTimestamp
from app.utils.logger import get_logger
from app.video.models import Video

logger = get_logger(__name__)


async def soft_delete_by_task_id(task_id: str) -> dict:
    """
    task_id에 해당하는 모든 관련 데이터를 소프트 삭제합니다.

    대상 테이블 (refresh_token, social_account, user 제외):
    - Project
    - Image
    - Lyric
    - Song
    - SongTimestamp (suno_audio_id 기준)
    - Video

    Args:
        task_id: 삭제할 프로젝트의 task_id

    Returns:
        dict: 각 테이블별 업데이트된 레코드 수
    """
    logger.info(f"[soft_delete_by_task_id] START - task_id: {task_id}")
    logger.debug(f"[soft_delete_by_task_id] DEBUG - 백그라운드 태스크 시작")

    result = {
        "task_id": task_id,
        "project": 0,
        "image": 0,
        "lyric": 0,
        "song": 0,
        "song_timestamp": 0,
        "video": 0,
    }

    try:
        async with BackgroundSessionLocal() as session:
            # DEBUG: 삭제 전 각 테이블의 데이터 수 확인
            video_before = await session.execute(
                select(func.count(Video.id)).where(
                    Video.task_id == task_id, Video.is_deleted == False
                )
            )
            logger.debug(
                f"[soft_delete_by_task_id] DEBUG - 삭제 전 Video 수: {video_before.scalar() or 0}"
            )

            song_before = await session.execute(
                select(func.count(Song.id)).where(
                    Song.task_id == task_id, Song.is_deleted == False
                )
            )
            logger.debug(
                f"[soft_delete_by_task_id] DEBUG - 삭제 전 Song 수: {song_before.scalar() or 0}"
            )

            lyric_before = await session.execute(
                select(func.count(Lyric.id)).where(
                    Lyric.task_id == task_id, Lyric.is_deleted == False
                )
            )
            logger.debug(
                f"[soft_delete_by_task_id] DEBUG - 삭제 전 Lyric 수: {lyric_before.scalar() or 0}"
            )

            image_before = await session.execute(
                select(func.count(Image.id)).where(
                    Image.task_id == task_id, Image.is_deleted == False
                )
            )
            logger.debug(
                f"[soft_delete_by_task_id] DEBUG - 삭제 전 Image 수: {image_before.scalar() or 0}"
            )

            project_before = await session.execute(
                select(func.count(Project.id)).where(
                    Project.task_id == task_id, Project.is_deleted == False
                )
            )
            logger.debug(
                f"[soft_delete_by_task_id] DEBUG - 삭제 전 Project 수: {project_before.scalar() or 0}"
            )

            # 1. Video 소프트 삭제
            video_stmt = (
                update(Video)
                .where(Video.task_id == task_id, Video.is_deleted == False)
                .values(is_deleted=True)
            )
            video_result = await session.execute(video_stmt)
            result["video"] = video_result.rowcount
            logger.info(f"[soft_delete_by_task_id] Video soft deleted - count: {result['video']}")
            logger.debug(f"[soft_delete_by_task_id] DEBUG - Video rowcount: {video_result.rowcount}")

            # 2. SongTimestamp 소프트 삭제 (Song의 suno_audio_id 기준, 서브쿼리 사용)
            suno_subquery = (
                select(Song.suno_audio_id)
                .where(
                    Song.task_id == task_id,
                    Song.suno_audio_id.isnot(None),
                )
                .scalar_subquery()
            )
            timestamp_stmt = (
                update(SongTimestamp)
                .where(
                    SongTimestamp.suno_audio_id.in_(suno_subquery),
                    SongTimestamp.is_deleted == False,
                )
                .values(is_deleted=True)
            )
            timestamp_result = await session.execute(timestamp_stmt)
            result["song_timestamp"] = timestamp_result.rowcount
            logger.info(
                f"[soft_delete_by_task_id] SongTimestamp soft deleted - count: {result['song_timestamp']}"
            )

            # 3. Song 소프트 삭제
            song_stmt = (
                update(Song)
                .where(Song.task_id == task_id, Song.is_deleted == False)
                .values(is_deleted=True)
            )
            song_result = await session.execute(song_stmt)
            result["song"] = song_result.rowcount
            logger.info(f"[soft_delete_by_task_id] Song soft deleted - count: {result['song']}")

            # 4. Lyric 소프트 삭제
            lyric_stmt = (
                update(Lyric)
                .where(Lyric.task_id == task_id, Lyric.is_deleted == False)
                .values(is_deleted=True)
            )
            lyric_result = await session.execute(lyric_stmt)
            result["lyric"] = lyric_result.rowcount
            logger.info(f"[soft_delete_by_task_id] Lyric soft deleted - count: {result['lyric']}")

            # 5. Image 소프트 삭제
            image_stmt = (
                update(Image)
                .where(Image.task_id == task_id, Image.is_deleted == False)
                .values(is_deleted=True)
            )
            image_result = await session.execute(image_stmt)
            result["image"] = image_result.rowcount
            logger.info(f"[soft_delete_by_task_id] Image soft deleted - count: {result['image']}")

            # 6. Project 소프트 삭제
            project_stmt = (
                update(Project)
                .where(Project.task_id == task_id, Project.is_deleted == False)
                .values(is_deleted=True)
            )
            project_result = await session.execute(project_stmt)
            result["project"] = project_result.rowcount
            logger.info(f"[soft_delete_by_task_id] Project soft deleted - count: {result['project']}")

            await session.commit()

        logger.info(
            f"[soft_delete_by_task_id] SUCCESS - task_id: {task_id}, "
            f"deleted: project={result['project']}, image={result['image']}, "
            f"lyric={result['lyric']}, song={result['song']}, "
            f"song_timestamp={result['song_timestamp']}, video={result['video']}"
        )
        return result

    except Exception as e:
        logger.error(f"[soft_delete_by_task_id] EXCEPTION - task_id: {task_id}, error: {e}", exc_info=True)
        raise