"""
文件上传模型
"""
from datetime import datetime
from typing import Optional
from sqlmodel import SQLModel, Field, Relationship
from .user import User


class Upload(SQLModel, table=True):
    """文件上传记录表"""
    __tablename__ = "uploads"
    
    id: Optional[int] = Field(default=None, primary_key=True)
    filename: str = Field(max_length=200)
    stored_path: str = Field(max_length=300)
    file_size: int  # 字节数
    mime_type: str = Field(max_length=100)
    uploaded_at: datetime = Field(default_factory=datetime.now)
    expires_at: Optional[datetime] = Field(default=None)
    user_id: int = Field(foreign_key="users.id", index=True)
    
    # 关系
    user: Optional[User] = Relationship()