Merge pull request #1915 from InfiniteCoder06/main

Add Custom app ID

lib/pages/add_app.dart

@@ -538,6 +538,38 @@ class AddAppPageState extends State<AddAppPage> {
                       });
                     }
                   }),
+            if (pickedSource != null && pickedSource!.enforceTrackOnly)
+              GeneratedForm(
+                  key: Key(
+                      '${pickedSource.runtimeType.toString()}-${pickedSource?.hostChanged.toString()}-${pickedSource?.hostIdenticalDespiteAnyChange.toString()}-appId'),
+                  items: [
+                    [
+                      GeneratedFormTextField('appId',
+                          label: tr('appId'),
+                          required: false,
+                          additionalValidators: [
+                            (value) {
+                              if (value == null || value.isEmpty) {
+                                return null;
+                              }
+                              final isValid = RegExp(
+                                      r'^([A-Za-z]{1}[A-Za-z\d_]*\.)+[A-Za-z][A-Za-z\d_]*$')
+                                  .hasMatch(value);
+                              if (!isValid) {
+                                return tr('invalidInput');
+                              }
+                              return null;
+                            }
+                          ]),
+                    ]
+                  ],
+                  onValueChanges: (values, valid, isBuilding) {
+                    if (!isBuilding) {
+                      setState(() {
+                        additionalSettings['appId'] = values['appId'];
+                      });
+                    }
+                  }),
           ],
         );