/**
 * Autoheight for comment textarea (legacy parity).
 */
(function () {
  'use strict';

  // Autoheight textareas.
  function bindAutoheight(ta) {
    if (!ta || ta.dataset.autoheightBound) return;
    ta.dataset.autoheightBound = '1';
    var max = parseInt(ta.getAttribute('maxheight') || '188', 10) || 188;
    var resize = function () {
      ta.style.height = 'auto';
      var h = Math.min(ta.scrollHeight, max);
      ta.style.height = h + 'px';
      ta.style.overflowY = ta.scrollHeight > max ? 'auto' : 'hidden';
    };
    ta.addEventListener('input', resize);
    resize();
  }

  function scan() {
    document.querySelectorAll('textarea[autoheight], textarea.grin').forEach(bindAutoheight);
  }

  document.addEventListener('DOMContentLoaded', scan);
  if (window.AksrtFrontend && typeof window.AksrtFrontend.register === 'function') {
    window.AksrtFrontend.register('aksrt-comment-fixed-input', function () {
      scan();
    });
  }
})();