85 lines
2.9 KiB
Python
85 lines
2.9 KiB
Python
"""
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数据库模型定义
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"""
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from datetime import datetime
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from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, JSON, Boolean
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import relationship
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Base = declarative_base()
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class User(Base):
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"""用户表"""
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__tablename__ = "users"
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id = Column(Integer, primary_key=True, index=True)
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phone = Column(String(11), unique=True, nullable=False, index=True)
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created_at = Column(DateTime, default=datetime.utcnow)
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last_login_at = Column(DateTime, nullable=True)
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is_active = Column(Boolean, default=True)
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# 关联
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conversations = relationship("Conversation", back_populates="user")
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verification_codes = relationship("VerificationCode", back_populates="user")
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class VerificationCode(Base):
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"""验证码表"""
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__tablename__ = "verification_codes"
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id = Column(Integer, primary_key=True, index=True)
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phone = Column(String(11), nullable=False, index=True)
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code = Column(String(6), nullable=False)
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created_at = Column(DateTime, default=datetime.utcnow)
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expires_at = Column(DateTime, nullable=False)
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is_used = Column(Boolean, default=False)
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used_at = Column(DateTime, nullable=True)
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ip_address = Column(String(45), nullable=True)
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user_id = Column(Integer, ForeignKey("users.id"), nullable=True)
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# 关联
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user = relationship("User", back_populates="verification_codes")
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class Conversation(Base):
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"""对话记录表"""
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__tablename__ = "conversations"
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id = Column(Integer, primary_key=True, index=True)
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session_id = Column(String(64), nullable=False, index=True)
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user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
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created_at = Column(DateTime, default=datetime.utcnow)
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# 关联
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user = relationship("User", back_populates="conversations")
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messages = relationship("Message", back_populates="conversation", cascade="all, delete-orphan")
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class Message(Base):
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"""消息记录表"""
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__tablename__ = "messages"
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id = Column(Integer, primary_key=True, index=True)
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conversation_id = Column(Integer, ForeignKey("conversations.id"), nullable=False)
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role = Column(String(20), nullable=False) # 'user' or 'assistant'
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content = Column(Text, nullable=False)
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msg_metadata = Column(JSON, nullable=True) # 改名避免与SQLAlchemy保留字冲突
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created_at = Column(DateTime, default=datetime.utcnow)
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# 关联对话
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conversation = relationship("Conversation", back_populates="messages")
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class UserPreference(Base):
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"""用户偏好表"""
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__tablename__ = "user_preferences"
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id = Column(Integer, primary_key=True, index=True)
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user_id = Column(Integer, ForeignKey("users.id"), unique=True, nullable=False, index=True)
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preferences = Column(JSON, nullable=True)
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updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
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# 关联
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user = relationship("User")
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