aliakbar
65 lines
2.5 KiB
Python
65 lines
2.5 KiB
Python
from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, Boolean
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from sqlalchemy.orm import relationship
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from sqlalchemy.sql import func
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from app.core.database import Base
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class Chat(Base):
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__tablename__ = "chats"
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id = Column(Integer, primary_key=True, index=True)
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lab_id = Column(Integer, ForeignKey("labs.id"), nullable=False)
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title = Column(String, nullable=False)
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created_at = Column(DateTime(timezone=True), server_default=func.now())
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updated_at = Column(DateTime(timezone=True), onupdate=func.now())
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lab = relationship("Lab", back_populates="chats")
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messages = relationship("ChatMessage", back_populates="chat", cascade="all, delete-orphan")
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members = relationship("ChatMember", back_populates="chat", cascade="all, delete-orphan")
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class ChatMember(Base):
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__tablename__ = "chat_members"
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id = Column(Integer, primary_key=True, index=True)
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chat_id = Column(Integer, ForeignKey("chats.id"), nullable=False)
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user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
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joined_at = Column(DateTime(timezone=True), server_default=func.now())
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last_read_message_id = Column(Integer, ForeignKey("chat_messages.id"), nullable=True)
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chat = relationship("Chat", back_populates="members")
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user = relationship("User")
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class ChatMessage(Base):
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__tablename__ = "chat_messages"
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id = Column(Integer, primary_key=True, index=True)
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chat_id = Column(Integer, ForeignKey("chats.id"), nullable=False)
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lab_id = Column(Integer, ForeignKey("labs.id"), nullable=False)
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user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
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content = Column(String, nullable=False)
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is_bot_message = Column(Boolean, default=False)
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timestamp = Column(DateTime(timezone=True), server_default=func.now())
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# File attachment fields
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file_url = Column(String, nullable=True)
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file_name = Column(String, nullable=True)
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file_type = Column(String, nullable=True)
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file_size = Column(Integer, nullable=True)
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# Reply-to field (self-referential)
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reply_to_id = Column(Integer, ForeignKey("chat_messages.id"), nullable=True)
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chat = relationship("Chat", back_populates="messages")
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lab = relationship("Lab")
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user = relationship("User")
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reply_to = relationship(
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"ChatMessage",
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foreign_keys=[reply_to_id],
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remote_side="ChatMessage.id",
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uselist=False,
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lazy="selectin",
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)
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@property
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def sender_name(self) -> str:
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return self.user.username if self.user else "Unknown"
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