39 lines
1.7 KiB
Python
39 lines
1.7 KiB
Python
"""Conversation model."""
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from sqlalchemy.orm import Mapped, mapped_column
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from sqlalchemy import String, Integer, Text, Boolean, DateTime
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from datetime import datetime
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from ..db.base import BaseModel
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class Conversation(BaseModel):
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"""Conversation model."""
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__tablename__ = "conversations"
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title: Mapped[str] = mapped_column(String(200), nullable=False)
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user_id: Mapped[int] = mapped_column(Integer, nullable=False) # Removed ForeignKey("users.id")
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knowledge_base_id: Mapped[int | None] = mapped_column(Integer, nullable=True) # Removed ForeignKey("knowledge_bases.id")
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system_prompt: Mapped[str | None] = mapped_column(Text, nullable=True)
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model_name: Mapped[str] = mapped_column(String(100), nullable=False, default="gpt-3.5-turbo")
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temperature: Mapped[str] = mapped_column(String(10), nullable=False, default="0.7")
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max_tokens: Mapped[int] = mapped_column(Integer, nullable=False, default=2048)
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is_archived: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
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message_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
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last_message_at: Mapped[datetime | None] = mapped_column(nullable=True)
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# Relationships removed to eliminate foreign key constraints
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def __repr__(self):
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return f"<Conversation(id={self.id}, title='{self.title}', user_id={self.user_id})>"
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@property
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def message_count(self):
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"""Get the number of messages in this conversation."""
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return len(self.messages)
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@property
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def last_message_at(self):
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"""Get the timestamp of the last message."""
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return self.messages[-1].created_at or self.created_at
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