Add support for multiple Google Tag containers

tarteaucitron.services.js

@@ -1372,6 +1372,32 @@ tarteaucitron.services.googletagmanager = {
     }
 };
 
+// google tag manager multiple
+tarteaucitron.services.multiplegoogletagmanager = {
+  "key": "multiplegoogletagmanager",
+  "type": "api",
+  "name": "Google Tag Manager",
+  "uri": "https://adssettings.google.com/",
+  "needConsent": true,
+  "cookies": ['_ga', '_gat', '__utma', '__utmb', '__utmc', '__utmt', '__utmz', '__gads', '_drt_', 'FLC', 'exchange_uid', 'id', 'fc', 'rrs', 'rds', 'rv', 'uid', 'UIDR', 'UID', 'clid', 'ipinfo', 'acs'],
+  "js": function () {
+    "use strict";
+    if (tarteaucitron.user.multiplegoogletagmanagerId === undefined) {
+      return;
+    }
+    window.dataLayer = window.dataLayer || [];
+    window.dataLayer.push({
+      'gtm.start': new Date().getTime(),
+      event: 'gtm.js'
+    });
+
+    tarteaucitron.user.multiplegoogletagmanagerId.forEach(function (id) {
+      tarteaucitron.addScript('https://www.googletagmanager.com/gtm.js?id=' + id);
+    });
+
+  }
+};
+
 // google webfonts
 tarteaucitron.services.googlefonts = {
   "key": "googlefonts",
@@ -3044,4 +3070,3 @@ tarteaucitron.services.userlike = {
         tarteaucitron.addScript('//userlike-cdn-widgets.s3-eu-west-1.amazonaws.com/' + tarteaucitron.user.userlikeKey);
     }
 };
-