import uuid
from datetime import datetime

from sqlalchemy import Boolean, DateTime, String, UniqueConstraint, func
from sqlalchemy.orm import Mapped, mapped_column

from app.database import Base


class DocumentShare(Base):
    __tablename__ = "document_shares"

    id: Mapped[str] = mapped_column(String, primary_key=True, default=lambda: str(uuid.uuid4()))
    document_id: Mapped[str] = mapped_column(String, nullable=False, index=True)
    group_id: Mapped[str] = mapped_column(String, nullable=False, index=True)
    shared_by_user_id: Mapped[str] = mapped_column(String, nullable=False)
    can_delete: Mapped[bool] = mapped_column(Boolean, nullable=False, default=False, server_default="false")
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), nullable=False
    )

    __table_args__ = (
        UniqueConstraint("document_id", "group_id", name="uq_document_group_share"),
    )