Perform capabilities check on comments

lib/controls/timeline/interactions_bar_control.dart

@@ -171,18 +171,21 @@ class _InteractionsBarControlState extends State<InteractionsBarControl> {
   }
 
   Widget buildCommentButton() {
+    final canComment = widget.entry.getCanComment();
+    final tooltip =
+        canComment.canDo ? 'Press to add a comment' : canComment.reason;
     return buildButton(
       Icons.comment,
       comments,
       true,
-      'Press to add a comment',
+      tooltip,
-      () async => await addComment(),
+      canComment.canDo ? () async => await addComment() : null,
     );
   }
 
   Widget buildReshareButton() {
     final reshareable = widget.entry.getIsReshareable(widget.isMine);
-    final canReshare = reshareable.isReshareable == Reshareable.yes;
+    final canReshare = reshareable.canDo;
     late final String tooltip;
     if (canReshare) {
       tooltip = youReshared ? 'Press to undo reshare' : 'Press to reshare';

lib/utils/interaction_availability_util.dart

@@ -5,30 +5,45 @@ import '../models/visibility.dart';
 import '../services/setting_service.dart';
 import 'known_network_extensions.dart';
 
-enum Reshareable {
+class InteractionCapabilityResult {
-  no,
+  final bool canDo;
-  yes,
-}
-
-class ReshareableResult {
-  final Reshareable isReshareable;
   final String reason;
 
-  const ReshareableResult({required this.isReshareable, required this.reason});
+  const InteractionCapabilityResult(
+      {required this.canDo, required this.reason});
 }
 
 extension InteractionAvailabilityExtension on TimelineEntry {
-  ReshareableResult getIsReshareable(bool isMine) {
+  InteractionCapabilityResult getCanComment() {
+    final settingsService = getIt<SettingsService>();
+    final nc = settingsService.networkCapabilities
+        .getCapabilities(networkInfo.network);
+
+    if (!nc.comment) {
+      return InteractionCapabilityResult(
+        canDo: false,
+        reason:
+            "User disabled commenting on ${networkInfo.network.labelName} items. Go into settings to change.",
+      );
+    }
+
+    return InteractionCapabilityResult(
+      canDo: true,
+      reason: "Can comment on item",
+    );
+  }
+
+  InteractionCapabilityResult getIsReshareable(bool isMine) {
     if (isMine) {
-      return const ReshareableResult(
+      return const InteractionCapabilityResult(
-        isReshareable: Reshareable.no,
+        canDo: false,
         reason: "Can't reshare your own post",
       );
     }
 
     if (networkInfo.network == KnownNetworks.bluesky) {
-      return const ReshareableResult(
+      return const InteractionCapabilityResult(
-        isReshareable: Reshareable.no,
+        canDo: false,
         reason:
             "Resharing of Bluesky posts through the API isn't supported by Friendica.",
       );
@@ -39,24 +54,24 @@ extension InteractionAvailabilityExtension on TimelineEntry {
         .getCapabilities(networkInfo.network);
 
     if (!nc.reshare) {
-      return ReshareableResult(
+      return InteractionCapabilityResult(
-        isReshareable: Reshareable.no,
+        canDo: false,
         reason:
-            "User disabled resharing ${networkInfo.network.labelName}. Go into settings to change.",
+            "User disabled resharing ${networkInfo.network.labelName} items. Go into settings to change.",
       );
     }
 
     if (visibility.type == VisibilityType.public ||
         visibility.type == VisibilityType.unlisted) {
-      return const ReshareableResult(
+      return const InteractionCapabilityResult(
-        isReshareable: Reshareable.yes,
+        canDo: true,
-        reason: "Can reshare post",
+        reason: "Can reshare item",
       );
     }
 
-    return const ReshareableResult(
+    return const InteractionCapabilityResult(
-      isReshareable: Reshareable.no,
+      canDo: false,
-      reason: "Can't reshare private posts",
+      reason: "Can't reshare private items",
     );
   }
 }