/**
 * Saves accordion open/closed state on toggle. The initial state restoration is
 * handled by an inline script in the view that runs synchronously before Bootstrap
 * initializes, preventing any visible flash.
 *
 * Key format: pcl_catalog_acc_{collapseId}  →  "1" (open) or "0" (closed)
 */
(function () {
    const PREFIX = 'pcl_catalog_acc_';

    document.addEventListener('DOMContentLoaded', function () {
        document.querySelectorAll('.catalog-tree .collapse').forEach(function (el) {
            el.addEventListener('show.bs.collapse', function () {
                localStorage.setItem(PREFIX + el.id, '1');
            });
            el.addEventListener('hide.bs.collapse', function () {
                localStorage.setItem(PREFIX + el.id, '0');
            });
        });
    });
}());