fix add mount

web/repertory/lib/helpers.dart

@@ -1,5 +1,3 @@
-import 'dart:convert';
-
 import 'package:convert/convert.dart';
 import 'package:collection/collection.dart';
 import 'package:flutter/foundation.dart';

web/repertory/lib/models/mount_list.dart

@@ -88,25 +88,58 @@ class MountList with ChangeNotifier {
     });
   }
 
-  Future<void> add(
+  Future<bool> add(
     String type,
     String name,
     Map<String, dynamic> mountConfig,
   ) async {
+    var ret = false;
+
+    displayError() {
+      if (constants.navigatorKey.currentContext == null) {
+        return;
+      }
+
+      displayErrorMessage(
+        constants.navigatorKey.currentContext!,
+        'Add mount failed. Please try again.',
+      );
+    }
+
     try {
       final map = await convertAllToString(mountConfig);
-      await http.post(
+      final response = await http.post(
         Uri.parse(
           Uri.encodeFull(
             '${getBaseUri()}/api/v1/add_mount?name=$name&type=$type&config=${jsonEncode(map)}',
           ),
         ),
       );
+
+      switch (response.statusCode) {
+        case 200:
+          ret = true;
+          break;
+        case 404:
+          reset();
+          break;
+        case 500:
+          displayAuthError();
+          break;
+        default:
+          displayError();
+          break;
+      }
     } catch (e) {
       debugPrint('$e');
+      displayError();
     }
 
-    return _fetch();
+    if (ret) {
+      await _fetch();
+    }
+
+    return ret;
   }
 
   Future<void> reset() async {
@@ -126,10 +159,4 @@ class MountList with ChangeNotifier {
 
     return _fetch();
   }
-
-  void remove(String name) {
-    _mountList.removeWhere((item) => item.name == name);
-
-    notifyListeners();
-  }
 }

web/repertory/lib/screens/add_mount_screen.dart

@@ -164,7 +164,7 @@ class _AddMountScreenState extends State<AddMountScreen> {
                         }
                       }
 
-                      await mountList.add(
+                      final success = await mountList.add(
                         _mountType,
                         _mountType == 'Remote'
                             ? '${_settings[_mountType]!['RemoteConfig']['HostNameOrIp']}_${_settings[_mountType]!['RemoteConfig']['ApiPort']}'
@@ -172,9 +172,10 @@ class _AddMountScreenState extends State<AddMountScreen> {
                         _settings[_mountType]!,
                       );
 
-                      if (!context.mounted) {
+                      if (!success || !context.mounted) {
                         return;
                       }
+
                       Navigator.pop(context);
                     },
                     label: const Text('Add'),