(function (window, document) {
  'use strict';

  function toArray(nodeList) {
    return Array.prototype.slice.call(nodeList || []);
  }

  function initTaskCertTabs(root) {
    if (!(root instanceof window.HTMLElement)) {
      return;
    }

    if (root.dataset.tabsInit === '1') {
      return;
    }

    var tabs = toArray(root.querySelectorAll('[data-tabs-tab]'));
    var panels = toArray(root.querySelectorAll('[data-tabs-panel]'));
    if (tabs.length === 0 || panels.length === 0) {
      return;
    }

    root.dataset.tabsInit = '1';

    function activate(targetKey) {
      var key = String(targetKey);
      var activeTabKey = key;

      tabs.forEach(function (tab) {
        var isActive = tab.getAttribute('data-tabs-tab') === key;
        tab.classList.toggle('is-active', isActive);
        tab.setAttribute('aria-selected', isActive ? 'true' : 'false');
        tab.setAttribute('tabindex', isActive ? '0' : '-1');

        if (isActive) {
          activeTabKey = tab.getAttribute('data-tab-key') || key;
        }
      });

      panels.forEach(function (panel) {
        var isActive = panel.getAttribute('data-tabs-panel') === key;
        panel.classList.toggle('is-active', isActive);
        panel.hidden = !isActive;
      });

      toArray(root.querySelectorAll('[data-tabs-active-input]')).forEach(function (input) {
        if (input instanceof window.HTMLInputElement) {
          input.value = activeTabKey;
        }
      });
    }

    tabs.forEach(function (tab) {
      tab.addEventListener('click', function () {
        activate(tab.getAttribute('data-tabs-tab'));
      });
    });

    var initial = root.getAttribute('data-tabs-active');
    var initialTab = null;
    if (initial !== null) {
      for (var i = 0; i < tabs.length; i += 1) {
        if (tabs[i].getAttribute('data-tabs-tab') === initial) {
          initialTab = tabs[i];
          break;
        }
      }
    }

    if (initialTab) {
      activate(initialTab.getAttribute('data-tabs-tab'));
    } else {
      activate(tabs[0].getAttribute('data-tabs-tab'));
    }

    toArray(root.querySelectorAll('form[data-cycle-switch-form]')).forEach(function (form) {
      if (!(form instanceof window.HTMLFormElement)) {
        return;
      }

      if (form.dataset.cycleSwitchInit === '1') {
        return;
      }
      form.dataset.cycleSwitchInit = '1';

      form.addEventListener('submit', function (event) {
        var method = String(form.getAttribute('method') || 'get').toUpperCase();
        if (method !== 'GET') {
          return;
        }

        event.preventDefault();

        var action = form.getAttribute('action') || window.location.href;
        var actionUrl;
        try {
          actionUrl = new window.URL(action, window.location.origin);
        } catch (err) {
          form.submit();
          return;
        }

        var params = new window.URLSearchParams(actionUrl.search || '');
        var formData = new window.FormData(form);
        formData.forEach(function (value, key) {
          if (typeof value !== 'string') {
            return;
          }
          params.set(key, value);
        });

        params.delete('load_guard');
        var query = params.toString();
        var redirectUrl = actionUrl.pathname;
        if (query !== '') {
          redirectUrl += '?' + query + '&load_guard=/';
        } else {
          redirectUrl += '?load_guard=/';
        }

        if (actionUrl.hash) {
          redirectUrl += actionUrl.hash;
        }

        window.location.assign(redirectUrl);
      });
    });
  }

  function autoInit() {
    toArray(document.querySelectorAll('[data-task-cert-tabs]')).forEach(initTaskCertTabs);
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', autoInit);
  } else {
    autoInit();
  }
})(window, document);