import uuid
from datetime import datetime

from sqlalchemy import ForeignKey, JSON, String, func
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.models.base import Base


class Comparison(Base):
    __tablename__ = "comparisons"

    id: Mapped[str] = mapped_column(
        String(36), primary_key=True, default=lambda: str(uuid.uuid4())
    )
    project_id: Mapped[str] = mapped_column(ForeignKey("projects.id"), index=True)
    user_id: Mapped[str] = mapped_column(String(36), index=True)
    name: Mapped[str] = mapped_column(String(255))
    analysis_ids: Mapped[dict] = mapped_column(JSON)
    comparison_data: Mapped[dict | None] = mapped_column(JSON, nullable=True)
    created_at: Mapped[datetime] = mapped_column(server_default=func.now())

    project: Mapped["Project"] = relationship(back_populates="comparisons")  # noqa: F821