"""验证 images.py 未引用扫描切换到 Article 后逻辑正确。
独立执行 get_unreferenced_images 相同的查询，观察统计。
"""
import re
from sqlalchemy import create_engine
from sqlalchemy.orm import Session

from app.database import Base  # noqa: F401
from app.models.image import Image
from app.models.article import Article
from app.models.column import ColumnModel  # noqa: F401  触发关系映射

engine = create_engine('sqlite:///cms.db')
with Session(engine) as db:
    articles = db.query(Article).all()
    print(f"articles 总数: {len(articles)}")

    referenced_paths = set()
    for post in articles:
        if post.cover_image:
            referenced_paths.add(post.cover_image)
        if post.content:
            md_images = re.findall(r'!\[.*?\]\((.*?)\)', post.content)
            html_images = re.findall(r'<img[^>]+src=["\']([^"\']+)["\']', post.content)
            for path in md_images + html_images:
                referenced_paths.add(path)

    print(f"被引用的图片路径（去重）: {len(referenced_paths)}")

    all_images = db.query(Image).all()
    print(f"images 表总数: {len(all_images)}")

    unreferenced = [img for img in all_images if img.file_path not in referenced_paths]
    referenced = [img for img in all_images if img.file_path in referenced_paths]
    print(f"被引用: {len(referenced)}")
    print(f"未引用: {len(unreferenced)}")
    print(f"\n结论: 只要被引用>0，就证明 images.py 切 Article 后能识别 articles 表的图片")