Files
agent_delta/backend/app/db/models/chat_file.py
T
2026-06-15 14:22:07 +08:00

44 lines
1.5 KiB
Python

"""ChatFile database model - stores metadata for files uploaded in chat."""
import uuid
from sqlalchemy import Column, ForeignKey, Integer, String, Text
from sqlalchemy.dialects.postgresql import UUID as PG_UUID
from sqlmodel import Field, SQLModel
from app.db.base import TimestampMixin
class ChatFile(TimestampMixin, SQLModel, table=True):
"""Tracks files uploaded by users in chat conversations."""
__tablename__ = "chat_files"
id: uuid.UUID = Field(
default_factory=uuid.uuid4,
sa_column=Column(PG_UUID(as_uuid=True), primary_key=True),
)
user_id: uuid.UUID = Field(
sa_column=Column(
PG_UUID(as_uuid=True),
ForeignKey("users.id", ondelete="CASCADE"),
nullable=False,
index=True,
),
)
message_id: uuid.UUID | None = Field(
default=None,
sa_column=Column(
PG_UUID(as_uuid=True), ForeignKey("messages.id", ondelete="CASCADE"), nullable=True
),
)
filename: str = Field(sa_column=Column(String(255), nullable=False))
mime_type: str = Field(sa_column=Column(String(100), nullable=False))
size: int = Field(sa_column=Column(Integer, nullable=False))
storage_path: str = Field(sa_column=Column(String(500), nullable=False))
file_type: str = Field(sa_column=Column(String(20), nullable=False))
parsed_content: str | None = Field(default=None, sa_column=Column(Text, nullable=True))
def __repr__(self) -> str:
return f"<ChatFile(id={self.id}, filename={self.filename}, type={self.file_type})>"