From 03fb0876d7fe0ceba39062d698fa5a5c4d7a95eb Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Wed, 26 May 2021 17:21:11 +0200
Subject: [PATCH] wait #4493 @0.5

---
 js/libs/fluidbook/fluidbook.stats.js | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/js/libs/fluidbook/fluidbook.stats.js b/js/libs/fluidbook/fluidbook.stats.js
index 2b199493..52fba07d 100644
--- a/js/libs/fluidbook/fluidbook.stats.js
+++ b/js/libs/fluidbook/fluidbook.stats.js
@@ -9,7 +9,9 @@ function FluidbookStats(fluidbook) {
     if (this.fluidbook.settings.stats) {
         this.worker = new Worker('js/libs/fluidbook/workers/stats.js');
     }
-    if (this.fluidbook.settings.googleAnalytics !== '') {
+    if (this.fluidbook.settings.googleTagManager !== undefined && this.fluidbook.settings.googleTagManager !== '') {
+        this.ga = 'gtm';
+    } else if (this.fluidbook.settings.googleAnalytics !== '') {
         this.ga = 'gtag';
         this.gaCodes = this.fluidbook.settings.googleAnalytics.split(',');
         if (window.gtag !== undefined) {
@@ -172,7 +174,21 @@ FluidbookStats.prototype = {
 
     _ga: function (a0, a1, a2, a3, a4) {
         var args = Array.prototype.slice.call(arguments);
-        if (this.ga === 'gtag') {
+        if (this.ga === 'gtm') {
+            var dl = {};
+            if (a0 === 'pageview') {
+                dl.event = 'pageview';
+                if (a1 !== undefined) {
+                    dl.location = a1;
+                }
+            } else if (a0 === 'event') {
+                dl.event = a1;
+                dl.eventLabel = a3;
+                dl.eventAction = a2;
+            }
+            console.log('datalayer', dl);
+            dataLayer.push(dl);
+        } else if (this.ga === 'gtag') {
             var f, o, c, a;
             o = {};
             if (a0 === 'pageview') {
@@ -192,12 +208,10 @@ FluidbookStats.prototype = {
 
             if (c) {
                 $.each(this.gaCodes, function (k, code) {
-                    if (window.gtag !== undefined) {
-                        gtag(f, code, o);
-                    }
+                    gtag(f, code, o);
                 });
             } else {
-                if (window.gtag !== undefined) {
+                if (this.ga === 'gtag') {
                     gtag(f, a, o);
                 }
             }
-- 
2.39.5