from flask import redirect, url_for, abort

import db

from core.flask_app import app


@app.route("/game/<slug>/objects/<int:definition_id>/data/<int:row_id>/delete", methods=["POST"])
def data_delete(slug, definition_id, row_id):
    definition = db.get_definition(slug, definition_id)
    if not definition:
        abort(404)
    referencing = db.rows_referencing(slug, definition_id, row_id)
    if referencing:
        # Suppression bloquée : d'autres lignes pointent vers celle-ci via
        # une relation. On revient à la liste, qui explique pourquoi via un
        # paramètre de requête simple plutôt qu'une session/flash message.
        return redirect(url_for("object_view", slug=slug, definition_id=definition_id, blocked_row=row_id))
    db.delete_row(slug, definition, row_id)
    return redirect(url_for("object_view", slug=slug, definition_id=definition_id))