from sqlalchemy import ForeignKey, Integer, String
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.database.base import Base


class Attachment(Base):
    __tablename__ = "attachments"

    id: Mapped[int] = mapped_column(primary_key=True, index=True)
    message_id: Mapped[int] = mapped_column(ForeignKey("messages.id", ondelete="CASCADE"), nullable=False, index=True)
    file_url: Mapped[str] = mapped_column(String(1024), nullable=False)
    file_type: Mapped[str] = mapped_column(String(64), nullable=False)
    file_size: Mapped[int] = mapped_column(Integer, nullable=False)

    message = relationship("Message", back_populates="attachments")