from sqlalchemy import Column, Integer, String, DateTime
from sqlalchemy.sql import func
from sqlalchemy.orm import relationship
from app.db.database import Base
from pydantic import BaseModel

class User(Base):
    """用户数据模型"""
    __tablename__ = "users"
    
    id = Column(Integer, primary_key=True, autoincrement=True, index=True)
    openid = Column(String(50), unique=True, index=True)
    unionid = Column(String(50), nullable=True, index=True)
    avatar = Column(String(255), nullable=True, comment="头像")
    nickname = Column(String(50), nullable=True, comment="昵称")
    create_time = Column(DateTime, default=func.now(), comment="创建时间")
    
    # 关系
    person_images = relationship("PersonImage", back_populates="user", cascade="all, delete-orphan")
    clothings = relationship("Clothing", back_populates="user", cascade="all, delete-orphan")
    # tryon_histories已通过backref在TryonHistory模型中定义
    
    def __repr__(self):
        return f"<User(id={self.id}, nickname={self.nickname})>"
    
    def to_dict(self):
        """将模型转换为字典"""
        return {
            "id": self.id,
            "openid": self.openid,
            "unionid": self.unionid,
            "avatar": self.avatar,
            "nickname": self.nickname,
            "create_time": self.create_time
        }