🐛 [Frontend] Fix: Unique session id (#6335)

Author: odeimaiz

services/static-webserver/client/source/class/osparc/utils/Utils.js

@@ -992,11 +992,30 @@ qx.Class.define("osparc.utils.Utils", {
       }
     },
 
+    // Function that creates a unique tabId even for duplicated tabs
     getClientSessionID: function() {
-      // https://stackoverflow.com/questions/11896160/any-way-to-identify-browser-tab-in-javascript
-      const clientSessionID = sessionStorage.getItem("clientsessionid") ? sessionStorage.getItem("clientsessionid") : osparc.utils.Utils.uuidV4();
-      sessionStorage.setItem("clientsessionid", clientSessionID);
-      return clientSessionID;
+      const getUniqueSessionId = () => {
+        const uuid = osparc.utils.Utils.uuidV4();
+        // Set window.name. This property is persistent on window reloads, but it doesn't get copied in a duplicated tab
+        window.name = uuid;
+        sessionStorage.setItem("clientsessionid", uuid);
+        return uuid;
+      };
+
+      let uniqueSessionId = sessionStorage.getItem("clientsessionid");
+      if (uniqueSessionId) {
+        // Check if the tab was duplicated
+        // window.name is one of the few things it doesn't get copied, but persists on window reload
+        if (window.name !== uniqueSessionId) {
+          // Tab has been duplicated, generate a new uniqueId for the duplicated tab
+          uniqueSessionId = getUniqueSessionId();
+        }
+      } else {
+        // If no tabId exists in sessionStorage, generate one
+        uniqueSessionId = getUniqueSessionId();
+      }
+
+      return uniqueSessionId;
     },
 
     getFreeDistanceToWindowEdges: function(layoutItem) {