/**
 * @file avokado-nudge.js
 * Remote-config banner replacement and Q&A keyword nudge (toast) for apartment ERP embeds.
 */
(function (global) {
  'use strict';

  var SDK_VERSION = '1.0.1';
  var TOAST_ID = '__avn_toast__';
  var STYLE_ID = '__avn_style__';
  var BANNER_TARGET = '.bg_area2_left';
  var VEHICLE_COUNT_ID = 'avokado-banner-vehicle-count';
  var _vehicleCountObs = null;

  var DEFAULTS = {
    configUrl: null,
    configTtl: 300,
    bannerTarget: BANNER_TARGET,
    onBannerLoad: null,
    onDetect: null,
    onAppClick: null,
  };

  var _cfg = {};
  var _remoteCfg = null;
  var _debounceT = null;
  var _dismissed = false;
  var _lastKw = '';
  var _toastEl = null;
  var _inputEl = null;
  var _qnaTriggerKeyword = null;
  var _qnaImpressionSent = false;
  var _moveActionBound = false;
  var _inputHandler = null;
  var _boundInputEl = null;

  var TOAST_CSS = [
    '#' + TOAST_ID + '{',
    '  position:fixed;bottom:24px;right:24px;width:340px;',
    '  background:#fff;border:1.5px solid #5b9bd5;border-radius:12px;',
    '  box-shadow:0 6px 24px rgba(0,0,0,.15);padding:18px 20px 16px;',
    '  z-index:99999;font-family:"Noto Sans KR","Apple SD Gothic Neo",sans-serif;',
    '  font-size:15px;line-height:1.6;',
    '  opacity:0;transform:translateY(10px);pointer-events:none;',
    '  transition:opacity .25s,transform .25s;',
    '}',
    '#' + TOAST_ID + '.avn-show{opacity:1;transform:translateY(0);pointer-events:auto;}',
    '#' + TOAST_ID + ' .avn-hd{display:flex;align-items:center;gap:8px;',
    '  font-weight:700;color:#0d3d8c;margin-bottom:10px;font-size:16px;}',
    '#' + TOAST_ID + ' .avn-ico{font-size:20px;line-height:1;}',
    '#' + TOAST_ID + ' .avn-list{list-style:none;margin:0 0 12px;padding:0;}',
    '#' +
      TOAST_ID +
      ' .avn-list-item a{display:flex;align-items:center;justify-content:space-between;',
    '  padding:10px 6px;font-size:15px;color:#1D6ADD;text-decoration:none;',
    '  border-bottom:1px solid #f0f0f0;border-radius:4px;transition:background .1s;}',
    '#' + TOAST_ID + ' .avn-list-item a::after{content:"›";font-size:18px;color:#88bef5;}',
    '#' + TOAST_ID + ' .avn-list-item:last-child a{border-bottom:none;}',
    '#' + TOAST_ID + ' .avn-list-item a:hover{background:#e8f2ff;}',
    '#' + TOAST_ID + ' .avn-ch{width:100%;background:#f5f5f5;color:#444;',
    '  border:1px solid #ddd;border-radius:10px;padding:14px 0;font-size:15px;',
    '  cursor:pointer;font-family:inherit;transition:background .15s;}',
    '#' + TOAST_ID + ' .avn-ch:hover{background:#ebebeb;}',
    '#' + TOAST_ID + ' .avn-kw{display:inline-block;background:#e8f2ff;color:#1558b0;',
    '  border:1px solid #88bef5;border-radius:10px;font-size:13px;',
    '  padding:2px 10px;margin-left:2px;font-weight:500;}',
    '#' + TOAST_ID + ' .avn-body{color:#333;font-size:15px;margin-bottom:14px;line-height:1.7;}',
    '#' + TOAST_ID + ' .avn-btns{display:flex;gap:8px;}',
    '#' + TOAST_ID + ' .avn-cta{flex:1;background:#1D6ADD;color:#fff;border:none;',
    '  border-radius:10px;padding:14px 0;font-size:16px;font-weight:700;',
    '  cursor:pointer;font-family:inherit;transition:background .15s;}',
    '#' + TOAST_ID + ' .avn-cta:hover{background:#155fc4;}',
    '#' + TOAST_ID + ' .avn-sub{background:#f5f5f5;color:#555;border:1px solid #ddd;',
    '  border-radius:10px;padding:14px 14px;font-size:16px;cursor:pointer;',
    '  font-family:inherit;transition:background .15s;}',
    '#' + TOAST_ID + ' .avn-sub:hover{background:#ebebeb;}',
    '#' + TOAST_ID + ' .avn-x{position:absolute;top:10px;right:12px;font-size:18px;',
    '  color:#aaa;cursor:pointer;background:none;border:none;padding:4px;',
    '  font-family:inherit;line-height:1;}',
    '#' + TOAST_ID + ' .avn-x:hover{color:#555;}',
  ].join('\n');

  function _loadRemoteConfig(url, callback) {
    var cacheKey = '__avn_cfg__';
    var cacheTime = '__avn_cfg_t__';
    var ttl = (_cfg.configTtl || 300) * 1000;

    try {
      var cached = sessionStorage.getItem(cacheKey);
      var ts = parseInt(sessionStorage.getItem(cacheTime) || '0', 10);
      if (cached && Date.now() - ts < ttl) {
        return callback(null, JSON.parse(cached));
      }
    } catch (e) {}

    var xhr = new XMLHttpRequest();
    xhr.open('GET', url + '?_=' + Date.now(), true);
    xhr.onreadystatechange = function () {
      if (xhr.readyState !== 4) return;
      if (xhr.status === 200) {
        try {
          var data = JSON.parse(xhr.responseText);
          try {
            sessionStorage.setItem(cacheKey, JSON.stringify(data));
            sessionStorage.setItem(cacheTime, String(Date.now()));
          } catch (e) {}
          callback(null, data);
        } catch (e) {
          callback(new Error('Config JSON parse error: ' + e.message), null);
        }
      } else {
        callback(new Error('Config load failed: HTTP ' + xhr.status), null);
      }
    };
    xhr.send();
  }

  function _vehicleCountHostEmpty(text) {
    if (text == null) return true;
    var s = String(text)
      .replace(/\uFEFF/g, '')
      .replace(/\u00A0/g, '')
      .replace(/\u2007/g, '')
      .replace(/\u202F/g, '')
      .replace(/\s/g, '');
    return s.length === 0;
  }

  function _vehicleCountRow(countEl) {
    var row = countEl.parentElement;
    while (row && row !== document.body) {
      if (_hasClass(row, 'avk-tb-info-count')) return row;
      row = row.parentElement;
    }
    return countEl.parentElement;
  }

  function _syncVehicleCountPlaceholder(countEl) {
    if (!countEl) return;
    var row = _vehicleCountRow(countEl);
    var raw = countEl.textContent || '';

    if (_vehicleCountHostEmpty(raw)) {
      countEl.textContent = '미사용';
      if (row) row.classList.add('avk-vehicle-placeholder');
      return;
    }

    if (raw === '미사용') {
      if (row) row.classList.add('avk-vehicle-placeholder');
      return;
    }

    if (row) row.classList.remove('avk-vehicle-placeholder');
  }

  function _bindVehicleCountPlaceholderFix(bannerRoot) {
    if (!bannerRoot) return;

    if (_vehicleCountObs) {
      try {
        _vehicleCountObs.disconnect();
      } catch (e) {}
      _vehicleCountObs = null;
    }

    function findEl() {
      if (bannerRoot.querySelector) {
        var q = bannerRoot.querySelector('#' + VEHICLE_COUNT_ID);
        if (q) return q;
      }
      return document.getElementById(VEHICLE_COUNT_ID);
    }

    var rafPending = false;
    function runSync() {
      rafPending = false;
      _syncVehicleCountPlaceholder(findEl());
    }

    function schedule() {
      if (rafPending) return;
      rafPending = true;
      if (typeof requestAnimationFrame === 'function') {
        requestAnimationFrame(runSync);
      } else {
        setTimeout(runSync, 0);
      }
    }

    runSync();

    try {
      _vehicleCountObs = new MutationObserver(schedule);
      _vehicleCountObs.observe(bannerRoot, {
        childList: true,
        subtree: true,
        characterData: true,
      });
    } catch (e) {
      _warn('방문차량 건수 placeholder 보정 observer 설정 실패');
    }
  }

  function _renderBanner(bannerCfg) {
    var target = document.querySelector(_cfg.bannerTarget);
    if (!target) {
      _warn('배너 대상 요소를 찾을 수 없습니다: ' + _cfg.bannerTarget);
      return;
    }

    var type = (bannerCfg && bannerCfg.type) || 'default';

    function fireBannerLoad() {
      if (typeof _cfg.onBannerLoad === 'function') {
        _cfg.onBannerLoad(type, target);
      }
    }

    if (type === 'hidden') {
      target.style.display = 'none';
      fireBannerLoad();
      return;
    }

    if (type === 'html') {
      if (bannerCfg.url) {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', bannerCfg.url + '?_=' + Date.now(), true);
        xhr.onreadystatechange = function () {
          if (xhr.readyState !== 4) return;
          if (xhr.status === 200) {
            target.innerHTML = xhr.responseText;
            _bindVehicleCountPlaceholderFix(target);
            fireBannerLoad();
          } else {
            _warn('배너 HTML 로딩 실패: HTTP ' + xhr.status);
          }
        };
        xhr.send();
        return;
      }
      if (bannerCfg.html) {
        target.innerHTML = bannerCfg.html;
        _bindVehicleCountPlaceholderFix(target);
        fireBannerLoad();
        return;
      }
    }

    fireBannerLoad();
  }

  function _injectStyle() {
    if (document.getElementById(STYLE_ID)) return;
    var el = document.createElement('style');
    el.id = STYLE_ID;
    el.textContent = TOAST_CSS;
    document.head.appendChild(el);
  }

  function _buildToast() {
    if (document.getElementById(TOAST_ID)) return;

    var div = document.createElement('div');
    div.id = TOAST_ID;
    div.setAttribute('role', 'alert');
    div.setAttribute('aria-live', 'polite');
    div.innerHTML = [
      '<button class="avn-x" id="__avn_x__" title="닫기">&times;</button>',
      '<div class="avn-hd">',
      '  <span class="avn-ico">🥑</span>',
      '  <span id="__avn_hdtxt__"></span>',
      '</div>',
      '<div id="__avn_body__"></div>',
    ].join('');

    document.body.appendChild(div);
    _toastEl = div;

    div.addEventListener('click', function (e) {
      if (e.isTrusted === false) return;

      var t = e.target || e.srcElement;
      while (t && t.nodeType !== 1) t = t.parentNode;
      while (t && t !== div) {
        if (
          t.nodeType === 1 &&
          (t.tagName || '').toUpperCase() === 'A' &&
          t.href &&
          t.parentNode &&
          _hasClass(t.parentNode, 'avn-list-item')
        ) {
          if (_qnaTriggerKeyword) {
            trackEvent('apt_qna_help_tooltip_item_click', { trigger_keyword: _qnaTriggerKeyword });
          }
          return;
        }
        if (t.id === '__avn_x__') {
          if (_qnaTriggerKeyword) {
            trackEvent('apt_qna_help_tooltip_close_btn_click', {
              trigger_keyword: _qnaTriggerKeyword,
            });
          }
          _dismiss();
          return;
        }
        if (_hasClass(t, 'avn-sub')) {
          _dismiss();
          return;
        }
        if (_hasClass(t, 'avn-cta')) {
          if (typeof _cfg.onAppClick === 'function') _cfg.onAppClick(_lastKw);
          window.open((_remoteCfg && _remoteCfg.appUrl) || '#', '_blank');
          _dismiss();
          return;
        }
        if (_hasClass(t, 'avn-ch')) {
          _openChannelTalk();
          return;
        }
        t = t.parentNode;
      }
    });
  }

  function _renderBody(kwObj) {
    var word = typeof kwObj === 'string' ? kwObj : kwObj.word;
    var contents =
      typeof kwObj === 'object' && kwObj.contents && kwObj.contents.length ? kwObj.contents : null;
    var toastCfg = (_remoteCfg && _remoteCfg.nudge && _remoteCfg.nudge.toast) || {};

    if (contents) {
      var items = '';
      for (var i = 0; i < contents.length; i++) {
        items +=
          '<li class="avn-list-item">' +
          '<a href="' +
          _esc(contents[i].url) +
          '" target="_blank" rel="noopener">' +
          _esc(contents[i].title) +
          '</a></li>';
      }
      return '<ul class="avn-list">' + items + '</ul>';
    }

    return [
      '<div class="avn-body">',
      '  <span class="avn-kw">"' + _esc(word) + '"</span> ',
      '  ' + _esc(toastCfg.body || '아보카도 앱에서 더 빠르게 처리됩니다.'),
      '</div>',
      '<div class="avn-btns">',
      '  <button class="avn-cta">' +
        _esc(toastCfg.ctaLabel || '아보카도 앱에서 문의하기') +
        '</button>',
      '  <button class="avn-sub">' + _esc(toastCfg.dismissLabel || '계속 작성') + '</button>',
      '</div>',
    ].join('');
  }

  function trackEvent(name, params) {
    if (typeof global.gtag === 'function') {
      global.gtag('event', name, params || {});
    }
  }

  function resolveQnaTriggerKeyword(kwObj) {
    if (kwObj == null || kwObj === '') return null;
    if (typeof kwObj === 'object' && kwObj.trigger_keyword) {
      var fixed = String(kwObj.trigger_keyword).trim();
      if (fixed === 'vote' || fixed === 'fire_check') return fixed;
    }
    var word = typeof kwObj === 'string' ? kwObj : kwObj.word != null ? String(kwObj.word) : '';
    word = String(word);
    if (word.indexOf('소방') !== -1) return 'fire_check';
    if (word.indexOf('투표') !== -1) return 'vote';
    return null;
  }

  function getButtonType(el) {
    if (!el) return null;
    var text = (el.textContent || '').trim();
    if (text.indexOf('전자투표') !== -1) return 'vote';
    if (text.indexOf('소방') !== -1) return 'fire_check';
    if (text.indexOf('사용 방법') !== -1) return 'guide';
    if (text.indexOf('입주민 등록') !== -1) return 'resident_register';
    if (text.indexOf('방문차량') !== -1) return 'visitor_parking';
    return null;
  }

  function resolveBannerButtonType(el) {
    if (!el || !el.getAttribute) return null;
    var raw = el.getAttribute('data-analytics');
    if (raw && String(raw).trim()) return String(raw).trim();
    var tag = (el.tagName || '').toUpperCase();
    if (tag !== 'BUTTON' && tag !== 'A') return null;
    return getButtonType(el);
  }

  function _bindMoveAction() {
    if (_moveActionBound) return;
    _moveActionBound = true;

    document.addEventListener('click', function (e) {
      if (e.isTrusted === false) return;

      var toastRoot = document.getElementById(TOAST_ID);
      if (
        toastRoot &&
        e.target &&
        typeof toastRoot.contains === 'function' &&
        toastRoot.contains(e.target)
      ) {
        return;
      }

      var el = e.target;
      var bannerTracked = false;

      while (el && el !== document) {
        if (!bannerTracked) {
          var buttonType = resolveBannerButtonType(el);
          if (buttonType) {
            trackEvent('apt_banner_btn_click', { button_type: buttonType });
            bannerTracked = true;
          }
        }

        if (el.hasAttribute && el.getAttribute('data-params') === 'resident_list') {
          e.preventDefault();

          var target = document.getElementById('VIN66100');
          if (target) {
            target.click();
          } else {
            console.warn('[AvokadoNudge] #VIN66100 요소를 찾을 수 없음');
          }
          return;
        }

        if (el.hasAttribute && el.hasAttribute('data-move')) {
          e.preventDefault();

          var type = el.getAttribute('data-move');

          if (typeof window.MoveAvo === 'function') {
            window.MoveAvo(type);
          } else {
            console.warn('[AvokadoNudge] MoveAvo 함수 없음:', type);
          }
          return;
        }

        if (el.hasAttribute && el.hasAttribute('data-action')) {
          e.preventDefault();

          var action = el.getAttribute('data-action');
          var params = el.getAttribute('data-params');

          if (typeof window[action] === 'function') {
            window[action](params);
          } else {
            try {
              new Function(action + '(' + JSON.stringify(params) + ')')();
            } catch (e) {
              console.warn('[AvokadoNudge] 실행 실패:', action);
            }
          }
          return;
        }

        el = el.parentNode;
      }
    });
  }

  function _showToast(kwObj) {
    if (!_toastEl) return;
    var word = typeof kwObj === 'string' ? kwObj : kwObj.word;
    var contents =
      typeof kwObj === 'object' && kwObj.contents && kwObj.contents.length ? kwObj.contents : null;
    _lastKw = word;

    var tk = resolveQnaTriggerKeyword(kwObj);
    if (tk) {
      if (!_qnaImpressionSent || tk !== _qnaTriggerKeyword) {
        trackEvent('apt_qna_help_tooltip_impression', { trigger_keyword: tk });
        _qnaImpressionSent = true;
      }
      _qnaTriggerKeyword = tk;
    } else {
      _qnaTriggerKeyword = null;
      _qnaImpressionSent = false;
    }

    var hdEl = document.getElementById('__avn_hdtxt__');
    var toastCfg = (_remoteCfg && _remoteCfg.nudge && _remoteCfg.nudge.toast) || {};
    if (hdEl) {
      hdEl.textContent = contents
        ? '"' + word + '" 관련 도움말'
        : toastCfg.title || '아보카도 관련 문의인가요?';
    }

    var bodyEl = document.getElementById('__avn_body__');
    if (bodyEl) bodyEl.innerHTML = _renderBody(kwObj);

    requestAnimationFrame(function () {
      _toastEl.classList.add('avn-show');
    });
    if (typeof _cfg.onDetect === 'function') _cfg.onDetect(word);
    _slackNotify(word);
  }

  function _openChannelTalk() {
    var chCfg = _remoteCfg && _remoteCfg.channelTalk;
    if (!chCfg) return;
    if (typeof global.ChannelIO === 'function') {
      global.ChannelIO('openChat');
    } else if (chCfg.fallbackUrl) {
      window.open(chCfg.fallbackUrl, '_blank');
    }
    _dismiss();
  }

  function _hideToast() {
    if (_toastEl) _toastEl.classList.remove('avn-show');
    _qnaTriggerKeyword = null;
    _qnaImpressionSent = false;
  }

  function _dismiss() {
    _hideToast();
    setTimeout(function () {
      _dismissed = false;
    }, 2000);
  }

  function _detectKeyword(text, keywords) {
    for (var i = 0; i < keywords.length; i++) {
      var kw = keywords[i];
      var word = typeof kw === 'string' ? kw : kw.word;
      if (text.indexOf(word) !== -1) return kw;
    }
    return null;
  }

  function _onInput(keywords) {
    return function (e) {
      if (_dismissed) return;
      clearTimeout(_debounceT);
      var el = e.target || e.srcElement;
      _debounceT = setTimeout(
        function () {
          var found = _detectKeyword(el.value || '', keywords);
          if (found) {
            _showToast(found);
          } else {
            _hideToast();
            _dismissed = false;
          }
        },
        (_remoteCfg && _remoteCfg.nudge && _remoteCfg.nudge.debounce) || 400,
      );
    };
  }

  function _bindInput(nudgeCfg) {
    var targetId = (nudgeCfg && nudgeCfg.targetId) || 'txtCnts';
    var keywords = (nudgeCfg && nudgeCfg.keywords) || [];

    var el = document.getElementById(targetId);
    if (!el) {
      _warn('Nudge 대상 요소를 찾을 수 없습니다: #' + targetId);
      return;
    }

    if (_inputHandler && _boundInputEl) {
      try {
        _boundInputEl.removeEventListener('input', _inputHandler);
        _boundInputEl.removeEventListener('keyup', _inputHandler);
      } catch (err) {}
    }

    _boundInputEl = el;
    _inputEl = el;
    _inputHandler = _onInput(keywords);
    _inputEl.addEventListener('input', _inputHandler);
    _inputEl.addEventListener('keyup', _inputHandler);
  }

  function _slackNotify(keyword) {
    var slackCfg = _remoteCfg && _remoteCfg.slack;
    if (!slackCfg || !slackCfg.enabled || !slackCfg.webhookUrl) return;

    var payload = JSON.stringify({
      text: '[Avokado Nudge] 키워드 감지: *' + keyword + '* — ' + (document.title || location.href),
    });

    var xhr = new XMLHttpRequest();
    xhr.open('POST', slackCfg.webhookUrl, true);
    xhr.setRequestHeader('Content-Type', 'application/json');
    xhr.send(payload);
  }

  function _bootstrap(remoteCfg) {
    _remoteCfg = remoteCfg;

    if (remoteCfg.enabled === false) {
      _log('SDK disabled via remote config.');
      return;
    }

    if (remoteCfg.banner) {
      _renderBanner(remoteCfg.banner);
    }

    var nudgeCfg = remoteCfg.nudge;
    if (nudgeCfg && nudgeCfg.enabled !== false) {
      _injectStyle();
      _buildToast();
      _bindInput(nudgeCfg);
    }

    _bindMoveAction();
  }

  function _hasClass(el, cls) {
    return !!(el && el.className && el.className.indexOf(cls) !== -1);
  }

  function _merge(a, b) {
    var r = {};
    for (var k in a) r[k] = a[k];
    if (b) for (var k in b) r[k] = b[k];
    return r;
  }

  function _esc(s) {
    return String(s)
      .replace(/&/g, '&amp;')
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;')
      .replace(/"/g, '&quot;');
  }

  function _log(msg) {
    if (global.console) console.log('[AvokadoNudge] ' + msg);
  }

  function _warn(msg) {
    if (global.console) console.warn('[AvokadoNudge] ' + msg);
  }

  function _ready(fn) {
    if (document.readyState === 'loading') {
      document.addEventListener('DOMContentLoaded', fn);
    } else {
      fn();
    }
  }

  /**
   * @typedef {object} AvokadoNudgeInitOptions
   * @property {string} [configUrl] Remote JSON config URL.
   * @property {number} [configTtl] SessionStorage cache TTL in seconds.
   * @property {string} [bannerTarget] Banner mount selector (default {@code .bg_area2_left}).
   * @property {function(string, HTMLElement)} [onBannerLoad] Banner type and mount element.
   * @property {function(string)} [onDetect] Keyword detected in the bound textarea.
   * @property {function(string)} [onAppClick] Fallback toast primary CTA clicked.
   */

  /**
   * @namespace AvokadoNudge
   */
  var AvokadoNudge = {
    version: SDK_VERSION,

    /**
     * 원격 JSON 설정을 읽어 배너와 키워드 넛지를 붙입니다. {@code configUrl}이 없으면 내장 기본값으로만 동작합니다.
     * DOM 준비 후 실행되므로, 스크립트는 {@code </body>} 직전 등에서 로드하면 됩니다.
     *
     * @example
     * AvokadoNudge.init({
     *   configUrl: 'https://example.com/banner-config.json',
     *   bannerTarget: '.bg_area2_left',
     *   configTtl: 300,
     *   onBannerLoad: function (type, mountEl) {},
     *   onDetect: function (keyword) {},
     *   onAppClick: function (keyword) {}
     * });
     *
     * @param {AvokadoNudgeInitOptions} [opts]
     * @returns {AvokadoNudge}
     */
    init: function (opts) {
      _cfg = _merge(DEFAULTS, opts);

      if (!_cfg.configUrl) {
        _warn('configUrl이 없습니다. 로컬 기본값으로 동작합니다.');
        _ready(function () {
          _bootstrap({
            enabled: true,
            banner: {
              type: 'default',
            },
            nudge: {
              enabled: true,
              targetId: 'txtCnts',
              debounce: 400,
              keywords: [],
              toast: {},
            },
            appUrl: 'https://back-office.avo-kado.co.kr',
            channelTalk: {
              enabled: true,
              label: '원하는 답변이 없다면 채널톡으로 문의',
              fallbackUrl: '',
            },
            slack: {
              enabled: false,
            },
          });
        });
        return this;
      }

      _loadRemoteConfig(_cfg.configUrl, function (err, data) {
        if (err) {
          _warn('Config 로딩 실패: ' + err.message);
          return;
        }
        _ready(function () {
          _bootstrap(data);
        });
      });

      return this;
    },

    /** @param {string} html */
    setBannerHtml: function (html) {
      var target = document.querySelector(_cfg.bannerTarget || BANNER_TARGET);
      if (target) {
        target.innerHTML = html;
        _bindVehicleCountPlaceholderFix(target);
      }
      return this;
    },

    /** @param {boolean} visible */
    toggleBanner: function (visible) {
      var target = document.querySelector(_cfg.bannerTarget || BANNER_TARGET);
      if (target) target.style.display = visible ? '' : 'none';
      return this;
    },

    /** @param {string} [keyword] */
    show: function (keyword) {
      _dismissed = false;
      _showToast(keyword || '');
      return this;
    },

    hide: function () {
      _hideToast();
      return this;
    },

    reset: function () {
      _dismissed = false;
      return this;
    },

    /** @param {string|Object} kw */
    addKeyword: function (kw) {
      if (_remoteCfg && _remoteCfg.nudge && _remoteCfg.nudge.keywords) {
        if (_remoteCfg.nudge.keywords.indexOf(kw) === -1) {
          _remoteCfg.nudge.keywords.push(kw);
        }
      }
      return this;
    },

    /** @returns {Object|null} Deep clone of the loaded remote config. */
    getConfig: function () {
      return _remoteCfg ? JSON.parse(JSON.stringify(_remoteCfg)) : null;
    },
  };

  global.AvokadoNudge = AvokadoNudge;
})(typeof window !== 'undefined' ? window : this);

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  if (window.gtag) return;

  const script = document.createElement('script');
  script.src = 'https://www.googletagmanager.com/gtag/js?id=G-QYJY9D06RY';
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  document.head.appendChild(script);

  window.dataLayer = window.dataLayer || [];
  window.gtag = function () {
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  window.gtag('js', new Date());
  window.gtag('config', 'G-QYJY9D06RY');
})();