Inform user when server can't be reached on login

src/screens/Login.vue

@@ -52,7 +52,9 @@ onMounted(async () => {
   /**
    * Fetch assets from the server
    */
-  assetStore.fetchAssets()
+  if (!await assetStore.fetchAssets()) {
+    notifications.addNotification({ message: 'Failed to fetch assets, the server may be offline or in maintenance. Please try again later.' })
+  }
 })
 
 async function loginFunc() {

src/stores/assets.ts

@@ -21,15 +21,17 @@ export const useAssetStore = defineStore('assets', {
     setObjects(objects: Object[]) {
       this.objects = objects
     },
-    fetchAssets() {
-      fetch(config.server_endpoint + '/assets')
+    async fetchAssets() {
+      return fetch(config.server_endpoint + '/assets')
         .then((response) => response.json())
         .then((assets) => {
-          this.setAssets(assets)
+          this.setAssets(assets);
+          return true;
         })
         .catch((error) => {
-          console.error('Error fetching assets:', error)
-        })
+          console.error('Error fetching assets:', error);
+          return false;
+        });
     }
   }
 })