/* Selection changes presentation only; permissions and updates remain server-side. */
(() => {
  'use strict';
  const form = document.querySelector('[data-bank-selection]');
  if (!form) return;
  const boxes = Array.from(form.querySelectorAll('input[name="accounts"]'));
  const all = form.querySelector('[data-select-all]');
  const count = form.querySelector('[data-selection-count]');
  const submit = form.querySelector('[data-bulk-submit]');
  if (!all || !count || !submit) return;
  const update = () => {
    const selected = boxes.filter(box => box.checked).length;
    all.checked = selected > 0 && selected === boxes.length;
    all.indeterminate = selected > 0 && selected < boxes.length;
    count.textContent = selected ? `${selected.toLocaleString('fa-IR')} حساب انتخاب شده` : 'حساب‌های موردنظر را انتخاب کنید.';
    submit.disabled = selected === 0;
  };
  all.addEventListener('change', () => {
    boxes.forEach(box => { box.checked = all.checked; });
    update();
  });
  boxes.forEach(box => box.addEventListener('change', update));
  window.addEventListener('pageshow', update);
  update();
})();