import uuid
from datetime import datetime, timezone

from sqlalchemy import DateTime, ForeignKey
from sqlalchemy.orm import Mapped, mapped_column

from app.db import Base


class EntitySighting(Base):
    """Join row: this session contacted this Codex entity."""

    __tablename__ = "entity_sightings"

    id: Mapped[uuid.UUID] = mapped_column(primary_key=True, default=uuid.uuid4)
    entity_id: Mapped[uuid.UUID] = mapped_column(ForeignKey("entities.id"), index=True)
    session_id: Mapped[uuid.UUID] = mapped_column(
        ForeignKey("contact_sessions.id"), index=True
    )
    user_id: Mapped[uuid.UUID] = mapped_column(ForeignKey("users.id"))
    seen_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
    )