"""Detection-level taxonomy API.

Read-only in M7 — M8 will add CRUD. The four defaults are seeded at boot
via `app.services.detection_levels.seed_detection_levels()`.
"""

from __future__ import annotations

from typing import Any

from flask import Blueprint, jsonify

from app.core.auth_decorators import require_auth, require_perm
from app.services import detection_levels as svc

bp = Blueprint("detection_levels", __name__, url_prefix="/detection-levels")


def _serialize(view: svc.DetectionLevelView) -> dict[str, Any]:
    return {
        "id": str(view.id),
        "key": view.key,
        "label_fr": view.label_fr,
        "label_en": view.label_en,
        "color_token": view.color_token,
        "position": view.position,
        "is_default": view.is_default,
        "is_system": view.is_system,
    }


@bp.get("")
@require_auth
@require_perm("detection_level.read")
def list_detection_levels():
    items = svc.list_detection_levels()
    return jsonify({"items": [_serialize(it) for it in items]})