https://www.taylorguitars.com/themes/custom/tg_theme/js/ga4-diagnostic.js?tm8vgp

1(function () {
2  'use strict';
3
4  var params = new URLSearchParams(window.location.search);
5  var debugMode = params.get('ga_debug') === '1' || window.sessionStorage.getItem('tg_ga_debug') === '1';
6
7  if (params.get('ga_debug') === '1') {
8    try { window.sessionStorage.setItem('tg_ga_debug', '1'); } catch (e) {}
9  }
10  if (params.get('ga_debug') === '0') {
11    try { window.sessionStorage.removeItem('tg_ga_debug'); } catch (e) {}
12    debugMode = false;
13  }
14
15  function readCookies() {
16    var out = {};
17    document.cookie.split(';').forEach(function (c) {
18      var idx = c.indexOf('=');
19      if (idx < 0) return;
20      var k = c.slice(0, idx).trim();
21      var v = c.slice(idx + 1).trim();
22      if (/^(_ga|_gid|_gat|OptanonConsent|OptanonAlertBoxClosed|FPID|FPLC|_gcl_)/.test(k)) {
23        out[k] = v;
24      }
25    });
26    return out;
27  }
28
29  function decodeGl(gl) {
30    if (!gl) return null;
31    try {
32      var parts = gl.split('*');
33      return { raw: gl, version: parts[0], payloadCount: parts.length };
34    } catch (e) { return { raw: gl, parseError: String(e) }; }
35  }
36
37  function snapshot(label) {
38    var gl = new URLSearchParams(window.location.search).get('_gl');
39    var dl = window.dataLayer ? window.dataLayer.slice(-10) : null;
40    var consent = null;
41    try {
42      var optCookie = readCookies().OptanonConsent;
43      if (optCookie) {
44        var groups = decodeURIComponent(optCookie).match(/groups=([^&]+)/);
45        consent = groups ? groups[1] : optCookie.slice(0, 120);
46      }
47    } catch (e) {}
48
49    var payload = {
50      label: label,
51      url: window.location.href,
52      host: window.location.hostname,
53      referrer: document.referrer || '(none)',
54      _gl: decodeGl(gl),
55      cookies: readCookies(),
56      consentGroups: consent,
57      dataLayerTail: dl,
58      gtagPresent: typeof window.gtag === 'function',
59      gtmContainers: (window.google_tag_manager ? Object.keys(window.google_tag_manager).filter(function (k) { return /^GTM-/.test(k); }) : []),
60      timestamp: new Date().toISOString()
61    };
62
63    console.groupCollapsed('%c[GA4-DEBUG] ' + label, 'color:#c00;font-weight:bold');
64    console.log(payload);
65    console.groupEnd();
66    return payload;
67  }
68
69  function installClickProbe() {
70    document.addEventListener('click', function (e) {
71      var a = e.target && e.target.closest ? e.target.closest('a[href]') : null;
72      if (!a) return;
73      var href = a.getAttribute('href');
74      var abs;
75      try { abs = new URL(href, window.location.href); } catch (err) { return; }
76      var sameHost = abs.hostname === window.location.hostname;
77      var crossTaylor = /(^|\.)taylorguitars\.com$/.test(abs.hostname) && !sameHost;
78      console.groupCollapsed('%c[GA4-DEBUG] click', 'color:#06c');
79      console.log({
80        href: href,
81        resolved: abs.href,
82        targetHost: abs.hostname,
83        sameHost: sameHost,
84        crossDomainTaylor: crossTaylor,
85        willLikelyDecorate: crossTaylor || /shop\.taylorguitars\.com$/.test(abs.hostname),
86        elementText: (a.textContent || '').trim().slice(0, 80),
87        elementId: a.id || null,
88        elementClass: a.className || null,
89        isLogo: !!a.closest('.site-logo, .logo, [class*="logo"]')
90      });
91      console.groupEnd();
92    }, true);
93  }
94
95  function installHistoryProbe() {
96    var origReplace = history.replaceState;
97    var origPush = history.pushState;
98    history.replaceState = function () {
99      console.log('[GA4-DEBUG] history.replaceState', arguments[2], 'from', window.location.href);
100      return origReplace.apply(this, arguments);
101    };
102    history.pushState = function () {
103      console.log('[GA4-DEBUG] history.pushState', arguments[2], 'from', window.location.href);
104      return origPush.apply(this, arguments);
105    };
106  }
107
108  function cleanupGlParam() {
109    var currentParams = new URLSearchParams(window.location.search);
110    if (!currentParams.has('_gl')) return;
111    if (debugMode) return;
112
113    currentParams.delete('_gl');
114    var qs = currentParams.toString();
115    var newUrl = window.location.pathname + (qs ? '?' + qs : '') + window.location.hash;
116    try {
117      window.history.replaceState(window.history.state, document.title, newUrl);
118    } catch (e) {}
119  }
120
121  if (debugMode) {
122    snapshot('initial');
123    installClickProbe();
124    installHistoryProbe();
125    window.addEventListener('load', function () { setTimeout(function () { snapshot('window.load+1s'); }, 1000); });
126    window.tgGaDebug = { snapshot: snapshot, off: function () { try { sessionStorage.removeItem('tg_ga_debug'); } catch (e) {} console.log('[GA4-DEBUG] disabled for next page load'); } };
127    console.log('%c[GA4-DEBUG] active. Call tgGaDebug.snapshot() any time. tgGaDebug.off() to disable.', 'color:#c00');
128  }
129
130  if (window.location.search.indexOf('_gl=') !== -1) {
131    if (document.readyState === 'complete') {
132      setTimeout(cleanupGlParam, 2500);
133    } else {
134      window.addEventListener('load', function () { setTimeout(cleanupGlParam, 2500); });
135    }
136  }
137})();