(function () {
  'use strict';
  var form = document.querySelector('[data-support-form]');
  if (!form || !window.fetch || !window.FormData) return;
  var button = form.querySelector('button[type="submit"]');
  var status = form.querySelector('[data-support-status]');
  var pending = false;
  var sent = false;
  button.disabled = false;
  form.addEventListener('submit', function (event) {
    event.preventDefault();
    if (pending || sent || !form.reportValidity()) return;
    pending = true;
    button.disabled = true;
    form.setAttribute('aria-busy', 'true');
    status.hidden = false;
    status.className = 'mt-3 mb-0 text-secondary';
    status.textContent = 'Invio del messaggio in corso...';
    fetch(form.getAttribute('action') || '/it', { method: 'POST', body: new FormData(form), credentials: 'same-origin' })
      .then(function (response) {
        return response.json().catch(function () { throw new Error('Richiesta non completata. Ricarica la pagina e riprova.'); });
      })
      .then(function (payload) {
        if (!payload.success) throw new Error(payload.message || 'Invio non riuscito. Riprova tra poco.');
        sent = true;
        form.querySelector('fieldset').disabled = true;
        status.className = 'mt-3 mb-0 text-success';
        status.textContent = payload.message;
        status.focus();
      })
      .catch(function (error) {
        status.className = 'mt-3 mb-0 text-danger';
        status.textContent = error.message || 'Invio non riuscito. Riprova tra poco.';
        status.focus();
      })
      .then(function () {
        pending = false;
        button.disabled = sent;
        form.removeAttribute('aria-busy');
      });
  });
  document.querySelectorAll('.kalia-support-topic').forEach(function (link) {
    link.addEventListener('click', function () {
      var detail = document.querySelector(link.getAttribute('href'));
      if (detail) detail.open = true;
    });
  });
})();