"""
图片资源模型
复用自 personal-blog，添加 module 字段支持多模块共用
"""
from sqlalchemy import Column, Integer, String, DateTime, func
from app.database import Base


class Image(Base):
    """上传的图片资源"""
    __tablename__ = "images"

    id = Column(Integer, primary_key=True, index=True)
    filename = Column(String(255), nullable=False, comment="存储文件名")
    original_name = Column(String(255), comment="原始文件名")
    file_path = Column(String(500), nullable=False, comment="原图路径")
    thumb_path = Column(String(500), comment="缩略图路径")
    description = Column(String(500), comment="图片描述")
    file_size = Column(Integer, comment="文件大小（字节）")
    width = Column(Integer, comment="图片宽度")
    height = Column(Integer, comment="图片高度")
    module = Column(String(20), default="news", comment="所属模块：news/product/page等")
    created_at = Column(DateTime, server_default=func.now(), comment="创建时间")

    def to_dict(self):
        """转换为字典"""
        return {
            "id": self.id,
            "filename": self.filename,
            "original_name": self.original_name,
            "file_path": self.file_path,
            "thumb_path": self.thumb_path,
            "description": self.description,
            "file_size": self.file_size,
            "width": self.width,
            "height": self.height,
            "module": self.module,
            "created_at": self.created_at.isoformat() if self.created_at else None,
        }