"""
用户数据模型
"""
from sqlalchemy import Column, Integer, String, DateTime, Boolean, Text
from sqlalchemy.sql import func
from sqlalchemy.orm import relationship

from ..core.database import Base


class User(Base):
    """用户模型"""
    __tablename__ = "users"
    
    id = Column(Integer, primary_key=True, index=True)
    username = Column(String(50), unique=True, index=True, nullable=False)
    email = Column(String(100), unique=True, index=True, nullable=False)
    hashed_password = Column(String(255), nullable=False)
    full_name = Column(String(100), nullable=True)
    is_active = Column(Boolean, default=True)
    is_superuser = Column(Boolean, default=False)
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
    last_login = Column(DateTime(timezone=True), nullable=True)
    
    # 关联关系
    chat_sessions = relationship("ChatSession", back_populates="user")
    documents = relationship("Document", back_populates="user")
    knowledge_bases = relationship("KnowledgeBase", back_populates="user")
    forum_posts = relationship("ForumPost", back_populates="author")
    forum_replies = relationship("ForumReply", back_populates="author")
    generated_images = relationship("GeneratedImageRecord", back_populates="user")
    
    def __repr__(self):
        return f"<User(id={self.id}, username='{self.username}', email='{self.email}')>"