Add ability to copy username/community on long press

lib/packages/ui/src/widgets/actions/bottom_sheet_action.dart

@@ -4,7 +4,15 @@ import 'package:flutter/material.dart';
 ///
 /// When tapped, will call the [onTap] callback.
 class BottomSheetAction extends StatelessWidget {
-  const BottomSheetAction({super.key, required this.leading, this.trailing, required this.title, this.subtitle, required this.onTap});
+  const BottomSheetAction({
+    super.key,
+    required this.leading,
+    this.trailing,
+    required this.title,
+    this.subtitle,
+    required this.onTap,
+    this.onLongPress,
+  });
 
   /// The leading widget
   final Widget leading;
@@ -21,20 +29,21 @@ class BottomSheetAction extends StatelessWidget {
   /// Callback function to be called when the category is tapped
   final Function() onTap;
 
+  /// Callback function to be called when the category is long pressed
+  final Function()? onLongPress;
+
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
 
     return InkWell(
       onTap: onTap,
+      onLongPress: onLongPress,
       customBorder: const StadiumBorder(),
       child: ListTile(
         leading: leading,
         trailing: trailing,
-        title: Text(
-          title,
-          style: theme.textTheme.titleMedium?.copyWith(fontWeight: FontWeight.w500),
-        ),
+        title: Text(title, style: theme.textTheme.titleMedium?.copyWith(fontWeight: FontWeight.w500)),
         subtitle: subtitle != null
             ? Text(
                 subtitle ?? '',

lib/src/features/comment/presentation/widgets/comment_bottom_sheet/general_comment_action_bottom_sheet.dart

@@ -8,6 +8,7 @@ import 'package:thunder/src/features/post/post.dart';
 import 'package:thunder/src/features/settings/api.dart';
 import 'package:thunder/src/foundation/config/global_context.dart';
 import 'package:thunder/src/features/instance/domain/utils/instance_link_utils.dart';
+import 'package:thunder/src/shared/full_name_copy_utils.dart';
 import 'package:thunder/packages/ui/ui.dart' show BottomSheetAction, MultiPickerItem, PickerItemData;
 
 /// Defines the general actions that can be taken on a comment
@@ -289,6 +290,15 @@ class _GeneralCommentActionBottomSheetPageState extends State<GeneralCommentActi
             title: page.name,
             subtitle: generateSubtitle(page),
             onTap: () => widget.onSwitchActivePage(page),
+            onLongPress: switch (page) {
+              GeneralCommentAction.user => () => copyActivityPubFullName(
+                    type: ActivityPubFullNameType.user,
+                    name: widget.comment.creator?.name,
+                    displayName: widget.comment.creator?.displayName,
+                    instance: fetchInstanceNameFromUrl(widget.comment.creator?.actorId),
+                  ),
+              _ => null,
+            },
           ),
         ),
       ],

lib/src/features/post/presentation/widgets/post_bottom_sheet/general_post_action_bottom_sheet.dart

@@ -8,6 +8,7 @@ import 'package:thunder/src/features/post/post.dart';
 import 'package:thunder/src/features/settings/api.dart';
 import 'package:thunder/src/foundation/config/global_context.dart';
 import 'package:thunder/src/features/instance/domain/utils/instance_link_utils.dart';
+import 'package:thunder/src/shared/full_name_copy_utils.dart';
 import 'package:thunder/packages/ui/ui.dart' show BottomSheetAction, MultiPickerItem, PickerItemData;
 
 /// Defines the general actions that can be taken on a post
@@ -302,6 +303,21 @@ class _GeneralPostActionBottomSheetPageState extends State<GeneralPostActionBott
             title: page.name,
             subtitle: generateSubtitle(page),
             onTap: () => widget.onSwitchActivePage(page),
+            onLongPress: switch (page) {
+              GeneralPostAction.user => () => copyActivityPubFullName(
+                    type: ActivityPubFullNameType.user,
+                    name: widget.post.creator?.name,
+                    displayName: widget.post.creator?.displayName,
+                    instance: fetchInstanceNameFromUrl(widget.post.creator?.actorId),
+                  ),
+              GeneralPostAction.community => () => copyActivityPubFullName(
+                    type: ActivityPubFullNameType.community,
+                    name: widget.post.community?.name,
+                    displayName: widget.post.community?.title,
+                    instance: fetchInstanceNameFromUrl(widget.post.community?.actorId),
+                  ),
+              _ => null,
+            },
           ),
         ),
       ],

lib/src/shared/full_name_copy_utils.dart

@@ -0,0 +1,63 @@
+import 'package:flutter/services.dart';
+
+import 'package:thunder/src/foundation/config/global_context.dart';
+import 'package:thunder/src/features/settings/api.dart';
+import 'package:thunder/packages/ui/ui.dart' show showSnackbar;
+
+enum ActivityPubFullNameType {
+  user,
+  community,
+}
+
+/// Generates the full name of the given type.
+///
+/// For users, the full name is !name@instance.tld
+/// For communities, the full name is !name@instance.tld
+String? generateActivityPubFullName({
+  required ActivityPubFullNameType type,
+  required String? name,
+  required String? displayName,
+  required String? instance,
+}) {
+  if (name == null || name.isEmpty || instance == null || instance.isEmpty) return null;
+
+  return switch (type) {
+    ActivityPubFullNameType.user => generateUserFullName(
+        null,
+        name,
+        displayName,
+        instance,
+        userSeparator: FullNameSeparator.lemmy,
+        useDisplayName: false,
+      ),
+    ActivityPubFullNameType.community => generateCommunityFullName(
+        null,
+        name,
+        displayName,
+        instance,
+        communitySeparator: FullNameSeparator.lemmy,
+        useDisplayName: false,
+      ),
+  };
+}
+
+/// Copies the full name of the given type to the clipboard.
+Future<void> copyActivityPubFullName({
+  required ActivityPubFullNameType type,
+  required String? name,
+  required String? displayName,
+  required String? instance,
+}) async {
+  final fullName = generateActivityPubFullName(
+    type: type,
+    name: name,
+    displayName: displayName,
+    instance: instance,
+  );
+
+  if (fullName == null || fullName.isEmpty) return;
+
+  HapticFeedback.mediumImpact();
+  await Clipboard.setData(ClipboardData(text: fullName));
+  showSnackbar(GlobalContext.l10n.copiedToClipboard);
+}

lib/src/shared/widgets/chips/community_chip.dart

@@ -8,6 +8,7 @@ import 'package:thunder/src/features/identity/presentation/widgets/full_name_wid
 import 'package:thunder/src/features/settings/api.dart';
 import 'package:thunder/src/features/instance/domain/utils/instance_link_utils.dart';
 import 'package:thunder/src/app/shell/navigation/navigation_utils.dart';
+import 'package:thunder/src/shared/full_name_copy_utils.dart';
 
 /// A chip which displays the given community and instance information.
 ///
@@ -52,6 +53,13 @@ class CommunityChip extends StatelessWidget {
       onTap: () => navigateToFeedPage(context, feedType: FeedType.community, communityId: communityId),
       child: Tooltip(
         excludeFromSemantics: true,
+        triggerMode: TooltipTriggerMode.longPress,
+        onTriggered: () => copyActivityPubFullName(
+          type: ActivityPubFullNameType.community,
+          name: communityName,
+          displayName: communityTitle,
+          instance: fetchInstanceNameFromUrl(communityUrl),
+        ),
         message: generateCommunityFullName(
           context,
           communityName,

lib/src/shared/widgets/chips/user_chip.dart

@@ -11,6 +11,7 @@ import 'package:thunder/src/features/settings/api.dart';
 import 'package:thunder/src/features/user/api.dart';
 import 'package:thunder/src/features/instance/domain/utils/instance_link_utils.dart';
 import 'package:thunder/src/app/shell/navigation/navigation_utils.dart';
+import 'package:thunder/src/shared/full_name_copy_utils.dart';
 import 'package:thunder/packages/ui/ui.dart' show Thunder;
 
 /// A chip which displays the given user and instance information. Additionally, it renders special chips for special users.
@@ -60,6 +61,13 @@ class UserChip extends StatelessWidget {
       ignoring: ignorePointerEvents,
       child: Tooltip(
         excludeFromSemantics: true,
+        triggerMode: TooltipTriggerMode.longPress,
+        onTriggered: () => copyActivityPubFullName(
+          type: ActivityPubFullNameType.user,
+          name: user.name,
+          displayName: user.displayName,
+          instance: fetchInstanceNameFromUrl(user.actorId),
+        ),
         message: '${generateUserFullName(
           context,
           user.name,