"""
Celery задачи для модуля communications
"""
from celery import shared_task
from django.utils import timezone
from datetime import timedelta
import logging

logger = logging.getLogger(__name__)


@shared_task
def cleanup_orphaned_attachments():
    """
    Очистка временных вложений без привязки к сообщению.
    Удаляет MessageAttachment с message=null старше 1 часа.
    """
    from communications.models import MessageAttachment
    
    cutoff_time = timezone.now() - timedelta(hours=1)
    
    orphaned = MessageAttachment.objects.filter(
        message__isnull=True,
        created_at__lt=cutoff_time
    )
    
    count = orphaned.count()
    
    if count > 0:
        logger.info(f'[cleanup_orphaned_attachments] Found {count} orphaned attachments')
        
        # Удаляем файлы и записи
        for attachment in orphaned:
            try:
                if attachment.file:
                    attachment.file.delete()
                attachment.delete()
            except Exception as e:
                logger.error(f'[cleanup_orphaned_attachments] Error deleting attachment {attachment.id}: {e}')
        
        logger.info(f'[cleanup_orphaned_attachments] Cleaned up {count} orphaned attachments')
    
    return count