make darkmode persistent close #15

src/vueLib/login/LoginMenu.vue

@@ -8,7 +8,7 @@
             <q-item-section class="text-primary">{{ loginText }}</q-item-section>
           </q-item>
           <q-item>
-            <q-btn flat :icon="Dark.mode ? 'light_mode' : 'dark_mode'" @click="Dark.toggle"></q-btn>
+            <q-btn flat :icon="darkMode" @click="toggleDarkMode"></q-btn>
           </q-item>
           <q-item>
             <q-select
@@ -54,21 +54,34 @@ import { useLogin } from './useLogin';
 
 const userLogin = useLogin();
 const route = useRoute();
+const refLoginDialog = ref();
+const user = useUserStore();
+const { NotifyResponse } = useNotify();
+const currentUser = computed(() => user.user);
+const darkMode = computed(() => {
+  if (Dark.mode) {
+    return 'light_mode';
+  }
+  return 'dark_mode';
+});
 const showLogin = computed(
   () => (route.path !== '/' && route.path !== '/login') || currentUser.value?.username === '',
 );
 
-const user = useUserStore();
 const autorized = computed(() => !!user.isAuthorizedAs(['admin']));
-const { NotifyResponse } = useNotify();
-const currentUser = computed(() => user.user);
 
+// switch between logged in or logged out text
 const loginText = computed(() => {
-  return currentUser.value ? 'Logout' : 'Login';
+  return currentUser.value ? i18n.global.t('logout') : i18n.global.t('login');
 });
 
-const refLoginDialog = ref();
+//switch between dark and light mode and save it in localStorage
+function toggleDarkMode() {
+  Dark.toggle();
+  localStorage.setItem('mode', String(Dark.mode));
+}
 
+// opens login page if no user is logged in otherwise it serves as logout
 function openLogin() {
   if (currentUser.value) {
     userLogin.logout().catch((err) => NotifyResponse(err, 'error'));