"""Modele ORM d'une carte explicitement partagee par son proprietaire."""

from __future__ import annotations

from datetime import UTC, datetime

from sqlalchemy import DateTime, Integer, String, Text
from sqlalchemy.orm import Mapped, mapped_column

from app.db.base import Base


def utcnow() -> datetime:
    return datetime.now(UTC)


class SharedMap(Base):
    """Snapshot serveur d'une carte, cree uniquement sur action de l'utilisateur."""

    __tablename__ = "shared_maps"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)

    # Identifiant public present dans l'URL /s/<share_token>.
    share_token: Mapped[str] = mapped_column(String(64), unique=True, index=True, nullable=False)

    # Seul le hash du management token est stocke : le secret n'existe que
    # dans l'IndexedDB du proprietaire.
    management_token_hash: Mapped[str] = mapped_column(String(64), nullable=False)

    title: Mapped[str] = mapped_column(String(255), nullable=False, default="")
    map_version: Mapped[int] = mapped_column(Integer, nullable=False, default=1)
    map_data: Mapped[str] = mapped_column(Text, nullable=False)

    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow)
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=utcnow, onupdate=utcnow
    )

    def __repr__(self) -> str:  # pragma: no cover - aide au debug uniquement
        return f"<SharedMap id={self.id} share_token={self.share_token!r}>"