fix visual federation bugs

lib/pages/community.dart

@@ -10,6 +10,7 @@ import '../hooks/delayed_loading.dart';
 import '../hooks/logged_in_action.dart';
 import '../hooks/memo_future.dart';
 import '../hooks/stores.dart';
+import '../util/extensions/api.dart';
 import '../util/goto.dart';
 import '../util/intl.dart';
 import '../util/more_icon.dart';
@@ -315,10 +316,11 @@ class _CommunityOverview extends StatelessWidget {
                         text: '@',
                         style: TextStyle(fontWeight: FontWeight.w200)),
                     TextSpan(
-                        text: instanceHost,
+                        text: community.originInstanceHost,
                         style: TextStyle(fontWeight: FontWeight.w600),
                         recognizer: TapGestureRecognizer()
-                          ..onTap = () => goToInstance(context, instanceHost)),
+                          ..onTap = () => goToInstance(
+                              context, community.originInstanceHost)),
                   ],
                 ),
               ),

lib/util/extensions/api.dart

@@ -0,0 +1,36 @@
+import 'package:lemmy_api_client/lemmy_api_client.dart';
+
+import '../cleanup_url.dart';
+
+// Extensions to lemmy api objects which give a [.originInstanceHost] getter
+// allowing for a convenient way of knowing what is the origin of the object
+// For example if a post on lemmy.ml is federated from lemmygrad.ml then
+// `post.instanceHost == 'lemmy.ml'
+// && post.originInstanceHost == 'lemmygrad.ml``
+
+extension GetInstanceCommunityView on CommunityView {
+  String get originInstanceHost => _extract(actorId);
+}
+
+extension GetInstanceUserView on UserView {
+  String get originInstanceHost => _extract(actorId);
+}
+
+extension GetInstanceCommunityModeratorView on CommunityModeratorView {
+  String get originInstanceHost => _extract(userActorId);
+}
+
+extension GetInstancePostView on PostView {
+  String get originInstanceHost => _extract(apId);
+}
+
+extension GetInstanceUser on User {
+  String get originInstanceHost => _extract(actorId);
+}
+
+extension GetInstanceCommentView on CommentView {
+  String get originInstanceHost => _extract(apId);
+}
+
+// TODO: change it to something more robust? regex?
+String _extract(String s) => cleanUpUrl(s.split('/')[2]);

lib/widgets/post.dart

@@ -13,6 +13,7 @@ import '../hooks/delayed_loading.dart';
 import '../hooks/logged_in_action.dart';
 import '../pages/full_post.dart';
 import '../url_launcher.dart';
+import '../util/extensions/api.dart';
 import '../util/goto.dart';
 import '../util/more_icon.dart';
 import 'bottom_modal.dart';
@@ -172,11 +173,11 @@ class Post extends HookWidget {
                               text: '@',
                               style: TextStyle(fontWeight: FontWeight.w300)),
                           TextSpan(
-                              text: instanceHost,
+                              text: post.originInstanceHost,
                               style: TextStyle(fontWeight: FontWeight.w600),
                               recognizer: TapGestureRecognizer()
-                                ..onTap =
-                                    () => goToInstance(context, instanceHost)),
+                                ..onTap = () => goToInstance(
+                                    context, post.originInstanceHost)),
                         ],
                       ),
                     )

lib/widgets/user_profile.dart

@@ -6,6 +6,7 @@ import 'package:lemmy_api_client/lemmy_api_client.dart';
 import 'package:timeago/timeago.dart' as timeago;
 
 import '../hooks/stores.dart';
+import '../util/extensions/api.dart';
 import '../util/goto.dart';
 import '../util/intl.dart';
 import '../util/text_color.dart';
@@ -221,9 +222,10 @@ class _UserOverview extends HookWidget {
                       style: theme.textTheme.caption,
                     ),
                     InkWell(
-                      onTap: () => goToInstance(context, userView.instanceHost),
+                      onTap: () =>
+                          goToInstance(context, userView.originInstanceHost),
                       child: Text(
-                        '${userView.instanceHost}',
+                        '${userView.originInstanceHost}',
                         style: theme.textTheme.caption,
                       ),
                     )

pubspec.lock

@@ -260,7 +260,7 @@ packages:
       name: lemmy_api_client
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.8.2"
+    version: "0.8.5"
   markdown:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -43,7 +43,7 @@ dependencies:
   # utils
   timeago: ^2.0.27
   fuzzy: <1.0.0
-  lemmy_api_client: ^0.8.2
+  lemmy_api_client: ^0.8.5
 
   flutter:
     sdk: flutter