import logging
from django.db.models.signals import post_delete
from django.dispatch import receiver

from apps.bookmark.models import Bookmark

logger = logging.getLogger(__name__)


def _delete_bookmarks_for(service: str, content_id: int):
    if not content_id:
        return
    try:
        deleted_count, _ = Bookmark.objects.filter(service=service, content_id=content_id).delete()
        if deleted_count > 0:
            logger.info("[Bookmark] Auto-deleted %d bookmark(s) for %s ID %s upon content deletion.", deleted_count, service, content_id)
    except Exception as exc:
        logger.error("[Bookmark] Error deleting bookmarks for %s ID %s: %s", service, content_id, exc)


# 1. Library Books
try:
    from apps.library.models import Book

    @receiver(post_delete, sender=Book)
    def on_book_deleted(sender, instance, **kwargs):
        _delete_bookmarks_for(Bookmark.ServiceChoices.LIBRARY, instance.id)
except ImportError:
    pass

# 2. Hadith & Hadith Corrections
try:
    from apps.hadis.models import Hadis, HadisCorrection

    @receiver(post_delete, sender=Hadis)
    def on_hadis_deleted(sender, instance, **kwargs):
        _delete_bookmarks_for(Bookmark.ServiceChoices.HADITH, instance.id)

    @receiver(post_delete, sender=HadisCorrection)
    def on_hadis_correction_deleted(sender, instance, **kwargs):
        _delete_bookmarks_for(Bookmark.ServiceChoices.HADITH_CORRECTION, instance.id)
except ImportError:
    pass

# 3. Videos & Video Playlists
try:
    from apps.video.models import Video, VideoPlaylist

    @receiver(post_delete, sender=Video)
    def on_video_deleted(sender, instance, **kwargs):
        _delete_bookmarks_for(Bookmark.ServiceChoices.VIDEO, instance.id)

    @receiver(post_delete, sender=VideoPlaylist)
    def on_video_playlist_deleted(sender, instance, **kwargs):
        _delete_bookmarks_for(Bookmark.ServiceChoices.VIDEO_PLAYLIST, instance.id)
        _delete_bookmarks_for(Bookmark.ServiceChoices.VIDEO, instance.id)
except ImportError:
    pass

# 4. Podcasts & Podcast Playlists
try:
    from apps.podcast.models import Podcast, PodcastPlaylist

    @receiver(post_delete, sender=Podcast)
    def on_podcast_deleted(sender, instance, **kwargs):
        _delete_bookmarks_for(Bookmark.ServiceChoices.PODCAST, instance.id)

    @receiver(post_delete, sender=PodcastPlaylist)
    def on_podcast_playlist_deleted(sender, instance, **kwargs):
        _delete_bookmarks_for(Bookmark.ServiceChoices.PODCAST_PLAYLIST, instance.id)
        _delete_bookmarks_for(Bookmark.ServiceChoices.PODCAST, instance.id)
except ImportError:
    pass

# 5. Articles
try:
    from apps.article.models import Article

    @receiver(post_delete, sender=Article)
    def on_article_deleted(sender, instance, **kwargs):
        _delete_bookmarks_for(Bookmark.ServiceChoices.ARTICLE, instance.id)
except ImportError:
    pass