/** Shared authentication state machine for modal and /sign/. */
(function () {
  'use strict';

  var config = window.aksrtData || {};
  var apiRoot = String(config.apiUrl || config.restUrl || '/wp-json/aksrt/v1').replace(/\/$/, '');
  var nonce = config.restNonce || '';
  var modal = null;
  var lastModalTrigger = null;
  var qrStates = [];
  var oauthErrorMessages = {
    access_denied: '已取消第三方授权',
    cancelled: '已取消第三方授权',
    canceled: '已取消第三方授权',
    invalid_state: '授权状态已失效，请重新尝试',
    state_invalid: '授权状态已失效，请重新尝试',
    state_mismatch: '授权状态已失效，请重新尝试',
    state_user_mismatch: '当前账号与授权发起账号不一致，请重新尝试',
    provider_disabled: '该登录方式暂未启用',
    provider_unavailable: '该登录方式暂时不可用',
    provider_cancelled: '已取消第三方授权',
    provider_error: '第三方授权失败，请稍后重试',
    callback_failed: '第三方授权失败，请稍后重试',
    code_missing: '授权回调缺少必要信息，请重新尝试',
    proxy_config: '代理登录配置不可用，请联系管理员',
    account_match_failed: '第三方账号匹配失败，请重试',
    login_failed: '第三方登录失败，请重试',
    bind_failed: '第三方账号绑定失败，请重试',
    bind_verification_required: '请先完成人机验证后再绑定',
    binding_conflict: '该第三方账号已绑定其他账号',
    account_conflict: '该第三方账号无法绑定到当前账号',
    already_bound: '该第三方账号已绑定其他账号',
    timeout: '第三方授权已超时，请重试',
  };
  var oauthProviderLabels = {
    github: 'GitHub',
    gitee: 'Gitee',
    qq: 'QQ',
    google: 'Google',
    weibo: '微博',
    weixin: '微信',
    weixingzh: '微信公众号',
  };

  function request(path, data, options) {
    options = options || {};
    return fetch(apiRoot + '/auth/' + path, {
      method: 'POST',
      credentials: 'same-origin',
      headers: { 'Content-Type': 'application/json', 'X-WP-Nonce': nonce },
      body: JSON.stringify(data),
      signal: options.signal,
    }).then(function (response) {
      return response.json().catch(function () { return {}; }).then(function (body) {
        if (!response.ok || body.success === false) {
          throw new Error(body.message || (body.data && body.data.message) || '请求失败，请稍后再试');
        }
        return body.data || body;
      });
    });
  }

  function formData(form) {
    var data = {};
    new FormData(form).forEach(function (value, key) {
      data[key] = value;
    });
    return data;
  }

  function escapeHtml(value) {
    return String(value || '').replace(/[&<>"']/g, function (char) {
      return { '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#039;' }[char];
    });
  }

  function notify(text, type) {
    if (!text || typeof window.notyf !== 'function') return;
    window.notyf(escapeHtml(text), type || 'info');
  }

  function cleanOAuthResult(url) {
    ['oauth_action', 'oauth_provider', 'oauth_error', 'oauth_bound'].forEach(function (key) {
      url.searchParams.delete(key);
    });
    if (window.history && window.history.replaceState) {
      window.history.replaceState({}, '', url.pathname + url.search + url.hash);
    }
  }

  function showOAuthResultToast() {
    if (!window.URL || document.documentElement.dataset.aksrtOauthResultHandled === 'true') return;
    var url = new URL(window.location.href);
    var action = url.searchParams.get('oauth_action');
    if (['login', 'bind', 'error'].indexOf(action) === -1) return;
    var userCenterOwnsBind = action === 'bind' && /\/user(?:\/settings)?\/?$/.test(url.pathname) && document.querySelector('[data-identity-root], [data-aksrt-settings-root]');
    if (userCenterOwnsBind) return;
    document.documentElement.dataset.aksrtOauthResultHandled = 'true';

    var provider = url.searchParams.get('oauth_provider') || '';
    var providerLabel = oauthProviderLabels[provider] || '';
    var message = '';
    var type = 'success';
    if (action === 'login') message = providerLabel ? providerLabel + '登录成功' : '登录成功';
    if (action === 'bind') message = providerLabel ? providerLabel + '绑定成功' : '第三方账号绑定成功';
    if (action === 'error') {
      type = 'danger';
      message = oauthErrorMessages[url.searchParams.get('oauth_error') || ''] || '第三方授权失败，请重试';
    }

    notify(message, type);
    cleanOAuthResult(url);
  }

  function qrState(root) {
    if (root._aksrtQrState) return root._aksrtQrState;
    root._aksrtQrState = {
      root: root,
      timer: null,
      timeout: null,
      controller: null,
      inFlight: false,
      sequence: 0,
      token: '',
      startedAt: 0,
      backoff: 0,
      terminal: false,
    };
    qrStates.push(root._aksrtQrState);
    return root._aksrtQrState;
  }

  function qrNodes(root) {
    var box = root.querySelector('[data-auth-qrcode]');
    return {
      box: box,
      content: box && box.querySelector('[data-auth-qr-content]'),
      status: box && box.querySelector('[data-auth-qr-status]'),
    };
  }

  function setQrStatus(root, message) {
    var nodes = qrNodes(root);
    if (nodes.status) nodes.status.textContent = message || '';
  }

  function setQrRefresh(root, message) {
    var nodes = qrNodes(root);
    if (!nodes.box) return;
    nodes.box.dataset.loading = '0';
    nodes.box.dataset.loaded = '0';
    if (nodes.content) nodes.content.innerHTML = '<button type="button" data-auth-refresh-qr>' + escapeHtml(message) + '</button>';
    setQrStatus(root, message);
  }

  function isRootActive(root) {
    if (!root || root.dataset.activeTab !== 'oauth' || document.visibilityState !== 'visible') return false;
    if (root.dataset.surface !== 'modal') return document.documentElement.contains(root);
    return !!modal && modal.classList.contains('is-open') && modal.contains(root);
  }

  function stopQr(root) {
    var state = qrState(root);
    state.sequence += 1;
    if (state.timer) window.clearTimeout(state.timer);
    if (state.timeout) window.clearTimeout(state.timeout);
    state.timer = null;
    state.timeout = null;
    if (state.controller) {
      try { state.controller.abort(); } catch (_) {}
    }
    state.controller = null;
    state.inFlight = false;
  }

  function finishQr(root, status, message) {
    var state = qrState(root);
    stopQr(root);
    state.terminal = true;
    state.token = '';
    setQrRefresh(root, message || (status === 'expired' ? '二维码已过期，点击刷新' : '二维码登录已结束，点击刷新'));
  }

  function qrRequest(root, path, payload) {
    var state = qrState(root);
    if (state.inFlight) return Promise.resolve(null);
    state.inFlight = true;
    var controller = window.AbortController ? new window.AbortController() : null;
    var timedOut = false;
    state.controller = controller;
    state.timeout = window.setTimeout(function () {
      timedOut = true;
      if (controller) controller.abort();
    }, 15000);

    return request(path, payload, { signal: controller ? controller.signal : undefined }).catch(function (error) {
      if (timedOut) {
        var timeoutError = new Error('二维码请求超时');
        timeoutError.code = 'QR_TIMEOUT';
        throw timeoutError;
      }
      throw error;
    }).finally(function () {
      if (state.controller !== controller) return;
      if (state.timeout) window.clearTimeout(state.timeout);
      state.timeout = null;
      state.controller = null;
      state.inFlight = false;
    });
  }

  function scheduleQrPoll(root, delay) {
    var state = qrState(root);
    if (!state.token || state.terminal || !isRootActive(root)) return;
    if (state.startedAt && Date.now() - state.startedAt >= 300000) {
      finishQr(root, 'timeout', '二维码登录已超时，点击刷新');
      return;
    }
    if (state.timer) window.clearTimeout(state.timer);
    var wait = delay === 0
      ? 0
      : Math.min(30000, Math.max(3000, Number(delay) || 3000) * Math.pow(2, Math.min(3, state.backoff)));
    state.timer = window.setTimeout(function () {
      state.timer = null;
      pollQr(root);
    }, wait);
  }

  function pollQr(root) {
    var state = qrState(root);
    if (!state.token || state.terminal || state.inFlight || !isRootActive(root)) return;
    qrRequest(root, 'check-qrcode-login', {
      token: state.token,
      action: root.dataset.oauthIntent || 'login',
      redirect_to: root.dataset.redirectTo || window.location.href,
    }).then(function (result) {
      if (!result || !isRootActive(root)) return;
      if (result.needs_binding && result.redirect) {
        stopQr(root);
        setQrStatus(root, '需要绑定本地账号，正在跳转');
        notify('请绑定已有账号或注册新账号', 'info');
        window.location.assign(result.redirect);
        return;
      }
      if (result.bound && result.redirect) {
        stopQr(root);
        setQrStatus(root, '绑定成功，正在跳转');
        notify('微信公众号绑定成功', 'success');
        window.location.assign(result.redirect);
        return;
      }
      if (result.logged_in || result.status === 'logged_in') {
        stopQr(root);
        setQrStatus(root, '登录成功，正在跳转');
        notify('登录成功', 'success');
        window.location.assign(result.redirect || window.location.href);
        return;
      }
      if (result.status === 'expired') {
        finishQr(root, 'expired', '二维码已过期，点击刷新');
        notify('二维码已过期，请刷新后重试', 'warning');
        return;
      }
      if (['denied', 'cancelled', 'canceled', 'failed', 'error'].indexOf(result.status) !== -1) {
        finishQr(root, result.status, '二维码登录未完成，点击刷新');
        notify('二维码登录未完成，请刷新后重试', 'danger');
        return;
      }
      state.backoff = 0;
      setQrStatus(root, result.message || (result.status === 'scanned' ? '已扫码，请在微信中确认' : '等待扫码确认'));
      scheduleQrPoll(root, result.poll_interval ? Number(result.poll_interval) * 1000 : 3000);
    }).catch(function (error) {
      if (!isRootActive(root) || (error && error.name === 'AbortError')) return;
      state.backoff = Math.min(3, state.backoff + 1);
      setQrStatus(root, error && error.code === 'QR_TIMEOUT' ? '状态检查超时，正在重试' : '状态检查失败，正在重试');
      scheduleQrPoll(root, 3000);
    });
  }

  function loadQr(root, force) {
    var nodes = qrNodes(root);
    if (!nodes.box) return;
    var state = qrState(root);
    if (force) {
      stopQr(root);
      state.token = '';
      state.startedAt = 0;
      state.backoff = 0;
      state.terminal = false;
      nodes.box.dataset.loaded = '0';
    }
    if (state.inFlight || nodes.box.dataset.loading === '1') return;
    if (state.token && !state.terminal) {
      scheduleQrPoll(root, 0);
      return;
    }
    if (nodes.box.dataset.loaded === '1' && state.terminal) return;

    nodes.box.dataset.loading = '1';
    setQrStatus(root, '正在获取二维码');
    var qrPayload = {
      action: root.dataset.oauthIntent || 'login',
      redirect_to: root.dataset.redirectTo || window.location.href,
    };
    if (root.dataset.bindPass) qrPayload.bind_pass = root.dataset.bindPass;
    qrRequest(root, 'qrcode-login', qrPayload).then(function (result) {
      if (!result || !isRootActive(root)) return;
      nodes.box.dataset.loading = '0';
      nodes.box.dataset.loaded = '1';
      if (nodes.content) nodes.content.innerHTML = result.qr_html || '';
      state.token = result.token || '';
      state.startedAt = Date.now();
      state.backoff = 0;
      state.terminal = result.mode !== 'scan' || !state.token;
      setQrStatus(root, state.terminal ? '请按页面提示完成登录' : '请使用微信扫描二维码');
      if (!state.terminal) scheduleQrPoll(root, result.poll_interval ? Number(result.poll_interval) * 1000 : 3000);
    }).catch(function (error) {
      if (!isRootActive(root) || (error && error.name === 'AbortError')) return;
      state.terminal = true;
      setQrRefresh(root, '二维码加载失败，点击重试');
      notify(error.message, 'danger');
    });
  }

  function activate(root, tab, updateUrl) {
    var panel = root.querySelector('[data-auth-panel="' + tab + '"]');
    if (!panel) return;
    if (root.dataset.activeTab === 'oauth' && tab !== 'oauth') stopQr(root);
    root.querySelectorAll('[data-auth-panel]').forEach(function (item) {
      var active = item === panel;
      item.hidden = !active;
      item.setAttribute('aria-hidden', active ? 'false' : 'true');
    });
    root.querySelectorAll('[data-auth-tab]').forEach(function (item) {
      item.setAttribute('aria-selected', item.dataset.authTab === tab ? 'true' : 'false');
    });
    root.dataset.activeTab = tab;
    if (updateUrl && root.dataset.surface === 'page' && window.history && window.URL) {
      var url = new URL(window.location.href);
      url.searchParams.set('tab', tab);
      window.history.replaceState({}, '', url.toString());
    }
    var focus = panel.querySelector('input:not([type="hidden"]), button, a[href], [tabindex]:not([tabindex="-1"])');
    if (focus) window.setTimeout(function () { focus.focus(); }, 30);
    if (tab === 'oauth') loadQr(root, false);
  }

  function submitQrCode(form) {
    var data = formData(form);
    var root = form.closest('[data-aksrt-auth]');
    data.action = root ? (root.dataset.oauthIntent || 'login') : 'login';
    data.redirect_to = root ? (root.dataset.redirectTo || window.location.href) : window.location.href;
    if (root && root.dataset.bindPass) data.bind_pass = root.dataset.bindPass;
    var button = form.querySelector('button[type="submit"]');
    if (button) button.disabled = true;
    request('weixingzh-code', data).then(function (result) {
      if (result.needs_binding) {
        notify('请绑定已有账号或注册新账号', 'info');
      } else if (result.bound) {
        notify('微信公众号绑定成功', 'success');
      } else {
        notify('登录成功', 'success');
      }
      window.location.assign(result.redirect || window.location.href);
    }).catch(function (error) {
      if (button) button.disabled = false;
      notify(error.message, 'danger');
    });
  }

  function setBusy(form, busy) {
    var button = form.querySelector('.sign-submit');
    if (!button) return;
    button.disabled = busy;
    var spinner = button.querySelector('.fa-spinner');
    if (spinner) spinner.hidden = !busy;
  }

  function startCountdown(button, seconds) {
    var original = button.dataset.label || button.textContent;
    button.dataset.label = original;
    button.disabled = true;
    var left = Math.max(1, Number(seconds) || 60);
    button.textContent = left + 's';
    var timer = window.setInterval(function () {
      left -= 1;
      if (left <= 0) {
        window.clearInterval(timer);
        button.disabled = false;
        button.textContent = original;
      } else {
        button.textContent = left + 's';
      }
    }, 1000);
  }

  function captchaScene(scene) {
    return scene === 'resetpassword' || scene === 'reset-password' ? 'lostpassword' : scene;
  }

  function captchaFormScene(form, fallback) {
    var mount = form && form.querySelector ? form.querySelector('[data-aksrt-captcha-config][data-scene]') : null;
    return mount ? (mount.getAttribute('data-scene') || captchaScene(fallback)) : captchaScene(fallback);
  }

  function captchaScope(form) {
    return form || document;
  }

  function resetCaptcha(scene, scope) {
    if (window.AKSRTCaptcha) window.AKSRTCaptcha.reset(captchaScene(scene), captchaScope(scope));
  }

  function sendCode(button) {
    var form = button.closest('form');
    var target = form && form.querySelector('[name="target"]');
    if (!target || !target.value.trim()) {
      notify('请先填写邮箱或手机号', 'warning');
      return;
    }
    button.disabled = true;
    var payload = formData(form);
    payload.scene = button.dataset.sendCode;
    payload.target = target.value.trim();
    payload.channel = (form.querySelector('[name="channel"]') || {}).value || '';
    var scene = captchaFormScene(form, payload.scene);
    var captcha = window.AKSRTCaptcha;
    var ticket = captcha ? captcha.run(captchaScene(scene), captchaScope(form)) : Promise.resolve({});
    ticket.then(function (captchaPayload) {
      if (captchaPayload === null) {
        button.disabled = false;
        notify('请先完成人机验证', 'warning');
        return null;
      }
      payload = formData(form);
      payload.scene = button.dataset.sendCode;
      payload.target = target.value.trim();
      payload.channel = (form.querySelector('[name="channel"]') || {}).value || '';
      Object.assign(payload, captchaPayload || {});
      return request('code', payload).then(function (result) {
        notify(result.message || '验证码已发送', 'success');
        startCountdown(button, result.countdown || 60);
      }).catch(function (error) {
        button.disabled = false;
        notify(error.message, 'danger');
      }).finally(function () {
        resetCaptcha(scene, form);
      });
    }).catch(function (error) {
      button.disabled = false;
      resetCaptcha(scene, form);
      notify(error.message || '人机验证失败，请重试', 'danger');
    });
  }

  function submit(form) {
    var action = form.dataset.authForm;
    var scene = captchaFormScene(form, action);
    var captcha = window.AKSRTCaptcha;
    setBusy(form, true);
    (captcha ? captcha.run(scene, captchaScope(form)) : Promise.resolve({})).then(function (captchaPayload) {
      if (captchaPayload === null) {
        setBusy(form, false);
        notify('请先完成人机验证', 'warning');
        return null;
      }
      var payload = formData(form);
      if (action === 'register' && payload.channel !== 'phone') payload.user_email = payload.target;
      Object.assign(payload, captchaPayload || {});
      return request(action, payload).then(function (result) {
        notify(result.message || '操作成功', 'success');
        if (result.redirect) window.setTimeout(function () { window.location.assign(result.redirect); }, 350);
      }).catch(function (error) {
        notify(error.message, 'danger');
        setBusy(form, false);
      }).finally(function () {
        resetCaptcha(scene, form);
      });
    }).catch(function (error) {
      setBusy(form, false);
      resetCaptcha(scene, form);
      notify(error.message || '人机验证失败，请重试', 'danger');
    });
  }

  function toggleLoginMode(root, button) {
    var password = root.querySelector('[data-auth-password-fields]');
    var code = root.querySelector('[data-auth-code-fields]');
    if (!password || !code) return;
    var showCode = code.hidden;
    code.hidden = !showCode;
    password.hidden = showCode;
    button.textContent = showCode ? '使用账号密码登录' : '使用验证码登录';
  }

  function setOAuthRedirect(root, redirect) {
    if (!redirect || !window.URL) return;
    root.querySelectorAll('a[data-provider][href]').forEach(function (link) {
      var url;
      try { url = new URL(link.href, window.location.href); } catch (_) { return; }
      if (url.origin !== window.location.origin) return;
      if (!link.dataset.oauthStartHref) link.dataset.oauthStartHref = url.toString();
      url = new URL(link.dataset.oauthStartHref, window.location.href);
      url.searchParams.set('redirect_to', redirect);
      link.href = url.toString();
    });
  }

  // 邀请码输入实时校验（公开只读接口；提交时服务端仍是硬门禁）。
  function initInviteVerify(root) {
    root.querySelectorAll('input[data-invite-verify]').forEach(function (input) {
      if (input.dataset.inviteVerifyBound === '1') return;
      input.dataset.inviteVerifyBound = '1';
      var feedback = root.querySelector('[data-invite-feedback]');
      var timer = null;
      function setFeedback(text, isError) {
        if (!feedback) return;
        if (!text) { feedback.hidden = true; feedback.textContent = ''; feedback.classList.remove('is-error'); return; }
        feedback.hidden = false;
        feedback.textContent = text;
        feedback.classList.toggle('is-error', !!isError);
      }
      input.addEventListener('input', function () {
        if (timer) window.clearTimeout(timer);
        var code = input.value.trim();
        if (!code) { setFeedback(''); return; }
        timer = window.setTimeout(function () {
          window.fetch('/wp-json/aksrt/v1/invite-code/verify?code=' + encodeURIComponent(code), { credentials: 'same-origin' })
            .then(function (response) { return response.ok ? response.json() : null; })
            .then(function (payload) {
              if (!payload) { setFeedback(''); return; }
              setFeedback(payload.valid ? '邀请码有效。' : '邀请码无效或已用完。', !payload.valid);
            })
            .catch(function () { setFeedback(''); });
        }, 400);
      });
    });
  }

  function initRoot(root) {
    root.querySelectorAll('input').forEach(function (input) {
      if (!input.hasAttribute('placeholder')) input.setAttribute('placeholder', ' ');
    });
    root.querySelectorAll('form').forEach(function (form) { form.noValidate = true; });
    root.querySelectorAll('[data-auth-tab]').forEach(function (tab) {
      tab.setAttribute('role', 'tab');
      var panel = root.querySelector('[data-auth-panel="' + tab.dataset.authTab + '"]');
      if (panel && panel.id) tab.setAttribute('aria-controls', panel.id);
    });
    root.querySelectorAll('[data-password-show]').forEach(function (button) {
      button.setAttribute('aria-pressed', 'false');
      if (!button.getAttribute('aria-label')) button.setAttribute('aria-label', '显示密码');
    });
    setOAuthRedirect(root, root.dataset.redirectTo || '');
    initInviteVerify(root);
    var initial = root.dataset.initialTab || 'signin';
    if (initial === 'oauth' && window.matchMedia && window.matchMedia('(max-width: 767px)').matches) initial = 'signin';
    var mayActivateQr = initial !== 'oauth' || document.visibilityState === 'visible';
    if (root.dataset.surface === 'modal' && (!modal || !modal.classList.contains('is-open'))) mayActivateQr = false;
    if (!mayActivateQr) initial = 'signin';
    activate(root, initial, false);
    root.addEventListener('click', function (event) {
      var tab = event.target.closest('[data-auth-tab]');
      if (tab) {
        event.preventDefault();
        activate(root, tab.dataset.authTab, true);
        return;
      }
      var password = event.target.closest('[data-password-show]');
      if (password) {
        var input = password.closest('.floating-input').querySelector('input');
        var visible = input.type === 'password';
        input.type = visible ? 'text' : 'password';
        password.setAttribute('aria-label', visible ? '隐藏密码' : '显示密码');
        password.setAttribute('aria-pressed', visible ? 'true' : 'false');
        password.querySelector('i').className = visible ? 'fa fas fa-eye-slash' : 'fa fas fa-eye';
        return;
      }
      var send = event.target.closest('[data-send-code]');
      if (send) {
        event.preventDefault();
        sendCode(send);
        return;
      }
      var mode = event.target.closest('[data-login-mode]');
      if (mode) {
        event.preventDefault();
        toggleLoginMode(root, mode);
        return;
      }
      var refreshQr = event.target.closest('[data-auth-refresh-qr]');
      if (refreshQr) {
        event.preventDefault();
        loadQr(root, true);
      }
    });
    root.addEventListener('submit', function (event) {
      var qrForm = event.target.closest('[data-aksrt-weixingzh-code]');
      if (qrForm) {
        event.preventDefault();
        if (validateForm(qrForm)) submitQrCode(qrForm);
        return;
      }
      var form = event.target.closest('[data-auth-form]');
      if (!form) return;
      event.preventDefault();
      if (!validateForm(form)) return;
      submit(form);
    });
  }

  function validateForm(form) {
    if (!form.checkValidity || form.checkValidity()) return true;
    var field = form.querySelector(':invalid');
    notify((field && field.validationMessage) || '请完整填写表单', 'warning');
    if (field && typeof field.focus === 'function') field.focus();
    return false;
  }

  function authPageUrl(tab, redirect) {
    var routes = config.routes || {};
    var base = tab === 'signup' ? routes.register : routes.login;
    var url = new URL(base || '/sign/', window.location.href);
    url.searchParams.set('tab', tab || 'signin');
    if (redirect) url.searchParams.set('redirect_to', redirect);
    return url.toString();
  }

  function focusableModalItems() {
    if (!modal) return [];
    return Array.prototype.filter.call(modal.querySelectorAll('a[href], button:not([disabled]), input:not([disabled]):not([type="hidden"]), select:not([disabled]), textarea:not([disabled]), [tabindex]:not([tabindex="-1"])'), function (item) {
      return item.offsetParent !== null && !item.closest('[hidden]');
    });
  }

  function openModal(tab, redirect, trigger) {
    if (!modal) {
      window.location.assign(authPageUrl(tab, redirect));
      return;
    }
    lastModalTrigger = trigger || document.activeElement;
    modal.classList.add('is-open');
    modal.setAttribute('aria-hidden', 'false');
    document.body.classList.add('auth-modal-open');
    var root = modal.querySelector('[data-aksrt-auth]');
    if (root) {
      var targetRedirect = redirect || window.location.href;
      root.dataset.redirectTo = targetRedirect;
      root.dataset.oauthIntent = tab === 'oauth' && trigger && trigger.dataset.oauthIntent === 'bind' ? 'bind' : 'login';
      root.querySelectorAll('[name="redirect_to"]').forEach(function (input) { input.value = targetRedirect; });
      setOAuthRedirect(root, targetRedirect);
      activate(root, tab || 'signin', false);
    }
  }

  function closeModal(storeDismissal) {
    if (!modal || !modal.classList.contains('is-open')) return;
    var root = modal.querySelector('[data-aksrt-auth]');
    if (root) stopQr(root);
    modal.classList.remove('is-open');
    modal.setAttribute('aria-hidden', 'true');
    document.body.classList.remove('auth-modal-open');
    if (storeDismissal && Number(modal.dataset.autoExpires) > 0) {
      var until = Date.now() + Number(modal.dataset.autoExpires) * 3600000;
      window.localStorage.setItem('aksrtAuthAutoUntil', String(until));
    }
    var restore = lastModalTrigger;
    lastModalTrigger = null;
    if (restore && document.documentElement.contains(restore) && typeof restore.focus === 'function') restore.focus();
  }

  function handleModalKeydown(event) {
    if (!modal || !modal.classList.contains('is-open')) return;
    if (event.key === 'Escape') {
      event.preventDefault();
      closeModal(true);
      return;
    }
    if (event.key !== 'Tab') return;
    var items = focusableModalItems();
    if (!items.length) {
      event.preventDefault();
      modal.focus();
      return;
    }
    var first = items[0];
    var last = items[items.length - 1];
    if (event.shiftKey && (document.activeElement === first || !modal.contains(document.activeElement))) {
      event.preventDefault();
      last.focus();
    } else if (!event.shiftKey && document.activeElement === last) {
      event.preventDefault();
      first.focus();
    }
  }

  function init() {
    if (document.documentElement.dataset.aksrtAuthInitialized === '1') return;
    document.documentElement.dataset.aksrtAuthInitialized = '1';
    showOAuthResultToast();
    document.querySelectorAll('[data-aksrt-auth]').forEach(initRoot);
    modal = document.querySelector('[data-auth-modal]');
    document.addEventListener('click', function (event) {
      var trigger = event.target.closest('[data-aksrt-auth-required], .aksrt-login-trigger, #nav-login-btn, .signin-loader, .signup-loader, .qrcode-signin');
      if (!trigger) return;
      event.preventDefault();
      var tab = trigger.classList.contains('signup-loader') ? 'signup' : (trigger.classList.contains('qrcode-signin') ? 'oauth' : 'signin');
      openModal(tab, trigger.dataset.authRedirect || window.location.href, trigger);
    });
    if (modal) {
      modal.addEventListener('click', function (event) {
        if (event.target.closest('[data-auth-close]')) closeModal(true);
      });
      document.addEventListener('keydown', handleModalKeydown);
      if (modal.dataset.auto === '1' && Number(window.localStorage.getItem('aksrtAuthAutoUntil') || 0) < Date.now()) {
        window.setTimeout(function () {
          openModal(modal.querySelector('[data-aksrt-auth]').dataset.initialTab || 'signin', window.location.href, null);
        }, Math.max(1, Number(modal.dataset.autoWait) || 5) * 1000);
      }
    }
    document.addEventListener('visibilitychange', function () {
      qrStates.forEach(function (state) {
        if (document.visibilityState !== 'visible') stopQr(state.root);
        else if (isRootActive(state.root)) loadQr(state.root, false);
      });
    });
  }

  jQuery(document).off('auto_fun.aksrt-auth').on('auto_fun.aksrt-auth', init);
}());