Files
QuestionProject/ai_knowledge_base_v2/apps/backend/app/models/chat.py

81 lines
4.4 KiB
Python

from __future__ import annotations
from datetime import datetime
from sqlalchemy import BigInteger, DateTime, ForeignKey, Index, Integer, String, Text, func
from sqlalchemy.orm import Mapped, mapped_column, relationship
from app.models.base import Base, TimestampMixin
PRIMARY_KEY_TYPE = BigInteger().with_variant(Integer, "sqlite")
class ChatSession(Base, TimestampMixin):
__tablename__ = "sys_chat_session"
__table_args__ = (
Index(
"ix_chat_session_user_source_active_updated",
"user_id",
"source_type",
"source_client_id",
"is_deleted",
"updated_at",
),
)
id: Mapped[int] = mapped_column(PRIMARY_KEY_TYPE, primary_key=True, autoincrement=True)
user_id: Mapped[int] = mapped_column(ForeignKey("sys_user.id"), index=True, nullable=False)
source_type: Mapped[str] = mapped_column(String(20), default="direct", nullable=False)
source_client_id: Mapped[int | None] = mapped_column(BigInteger, nullable=True)
title: Mapped[str] = mapped_column(String(100), nullable=False)
summary: Mapped[str | None] = mapped_column(Text, nullable=True)
summary_up_to_message_id: Mapped[int | None] = mapped_column(BigInteger, nullable=True)
message_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
last_message_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
is_deleted: Mapped[int] = mapped_column(default=0, nullable=False)
user: Mapped["User"] = relationship("User", back_populates="chat_sessions")
messages: Mapped[list["ChatMessage"]] = relationship("ChatMessage", back_populates="session")
class ChatMessage(Base):
__tablename__ = "sys_chat_message"
id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
session_id: Mapped[int] = mapped_column(ForeignKey("sys_chat_session.id"), index=True, nullable=False)
topic_session_id: Mapped[int | None] = mapped_column(BigInteger, index=True, nullable=True)
user_id: Mapped[int] = mapped_column(ForeignKey("sys_user.id"), index=True, nullable=False)
role: Mapped[str] = mapped_column(String(20), nullable=False)
content: Mapped[str] = mapped_column(Text, nullable=False)
message_status: Mapped[str] = mapped_column(String(20), default="FINISHED", nullable=False)
token_input: Mapped[int | None] = mapped_column(Integer, nullable=True)
token_output: Mapped[int | None] = mapped_column(Integer, nullable=True)
response_time_ms: Mapped[int | None] = mapped_column(Integer, nullable=True)
model_id: Mapped[int | None] = mapped_column(ForeignKey("sys_model.id"), nullable=True)
created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), nullable=False)
session: Mapped[ChatSession] = relationship("ChatSession", back_populates="messages")
class TopicSession(Base):
__tablename__ = "sys_topic_session"
id: Mapped[int] = mapped_column(BigInteger().with_variant(Integer, "sqlite"), primary_key=True, autoincrement=True)
user_id: Mapped[int] = mapped_column(ForeignKey("sys_user.id"), index=True, nullable=False)
chat_session_id: Mapped[int] = mapped_column(ForeignKey("sys_chat_session.id"), index=True, nullable=False)
title: Mapped[str] = mapped_column(String(120), nullable=False)
core_question: Mapped[str] = mapped_column(Text, nullable=False)
status: Mapped[str] = mapped_column(String(20), default="active", index=True, nullable=False)
message_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
token_input: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
token_output: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
quota_deducted: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
recommended_homework: Mapped[str | None] = mapped_column(Text, nullable=True)
help_card_generated: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
share_draft_generated: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
started_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), nullable=False)
ended_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), nullable=False)
updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), onupdate=func.now(), nullable=False)