1371 staging bug or maybe technical design issue with morph choices (#1372)

* fix: don't show morph activity if no distractors are available

* mend

lib/pangea/models/pangea_token_model.dart

@@ -351,32 +351,47 @@ class PangeaToken {
         ?.value;
   }
 
-  Future<bool> canGenerateDistractors(
+  /// Syncronously determine if a distractor can be generated for a given activity type.
+  /// WARNING - do not use this function to determine if lemma activities can be generated.
+  /// Use [canGenerateLemmaDistractors] instead.
+  bool canGenerateDistractors(
     ActivityTypeEnum type, {
     String? morphFeature,
     String? morphTag,
-  }) async {
+  }) {
     final constructListModel =
         MatrixState.pangeaController.getAnalytics.constructListModel;
     switch (type) {
       case ActivityTypeEnum.lemmaId:
-        final distractors =
-            await constructListModel.lemmaActivityDistractors(this);
-        return distractors.isNotEmpty;
+        // the function to determine this for lemmas is async
+        // do not use this function for lemma activities
+        debugger(when: kDebugMode);
+        return false;
       case ActivityTypeEnum.morphId:
         final distractors = constructListModel.morphActivityDistractors(
           morphFeature!,
           morphTag!,
         );
         return distractors.isNotEmpty;
+      case ActivityTypeEnum.wordMeaning:
+        return LemmaDictionaryRepo.getDistractorDefinitions(
+          lemma.text,
+          1,
+        ).isNotEmpty;
       case ActivityTypeEnum.emoji:
       case ActivityTypeEnum.wordFocusListening:
-      case ActivityTypeEnum.wordMeaning:
       case ActivityTypeEnum.hiddenWordListening:
         return true;
     }
   }
 
+  Future<bool> canGenerateLemmaDistractors() async {
+    final constructListModel =
+        MatrixState.pangeaController.getAnalytics.constructListModel;
+    final distractors = await constructListModel.lemmaActivityDistractors(this);
+    return distractors.isNotEmpty;
+  }
+
   // maybe for every 5 points of xp for a particular activity, increment the days between uses by 2
   bool shouldDoActivity({
     required ActivityTypeEnum a,

lib/pangea/widgets/word_zoom/word_zoom_widget.dart

@@ -7,7 +7,6 @@ import 'package:fluffychat/pangea/controllers/message_analytics_controller.dart'
 import 'package:fluffychat/pangea/enum/activity_type_enum.dart';
 import 'package:fluffychat/pangea/matrix_event_wrappers/pangea_message_event.dart';
 import 'package:fluffychat/pangea/models/pangea_token_model.dart';
-import 'package:fluffychat/pangea/repo/lemma_definition_repo.dart';
 import 'package:fluffychat/pangea/utils/grammar/get_grammar_copy.dart';
 import 'package:fluffychat/pangea/widgets/chat/message_selection_overlay.dart';
 import 'package:fluffychat/pangea/widgets/chat/toolbar_content_loading_indicator.dart';
@@ -79,12 +78,6 @@ class WordZoomWidgetState extends State<WordZoomWidget> {
   // is computationally expensive, so we only do it once
   bool _canGenerateLemmaActivity = false;
 
-  bool get _canGenerateDefintionActivity =>
-      LemmaDictionaryRepo.getDistractorDefinitions(
-        widget.token.lemma.text,
-        1,
-      ).isNotEmpty;
-
   @override
   void initState() {
     super.initState();
@@ -111,8 +104,7 @@ class WordZoomWidgetState extends State<WordZoomWidget> {
   }
 
   Future<void> _setCanGenerateLemmaActivity() async {
-    final canGenerate =
-        await widget.token.canGenerateDistractors(ActivityTypeEnum.lemmaId);
+    final canGenerate = await widget.token.canGenerateLemmaDistractors();
     if (mounted) setState(() => _canGenerateLemmaActivity = canGenerate);
   }
 
@@ -181,17 +173,32 @@ class WordZoomWidgetState extends State<WordZoomWidget> {
     });
   }
 
-  bool _shouldShowActivity(WordZoomSelection selection) =>
-      widget.token.shouldDoActivity(
-        a: selection.activityType,
-        feature: _selectedMorphFeature,
-        tag: _selectedMorphFeature == null
-            ? null
-            : widget.token.morph[_selectedMorphFeature],
-      ) &&
-      (selection != WordZoomSelection.lemma || _canGenerateLemmaActivity) &&
-      (selection != WordZoomSelection.translation ||
-          _canGenerateDefintionActivity);
+  bool _shouldShowActivity(WordZoomSelection selection) {
+    final shouldDo = widget.token.shouldDoActivity(
+      a: selection.activityType,
+      feature: _selectedMorphFeature,
+      tag: _selectedMorphFeature == null
+          ? null
+          : widget.token.morph[_selectedMorphFeature],
+    );
+    if (!shouldDo) return false;
+
+    switch (selection) {
+      case WordZoomSelection.lemma:
+        return _canGenerateLemmaActivity;
+      case WordZoomSelection.translation:
+      case WordZoomSelection.morph:
+        return widget.token.canGenerateDistractors(
+          selection.activityType,
+          morphFeature: _selectedMorphFeature,
+          morphTag: _selectedMorphFeature == null
+              ? null
+              : widget.token.morph[_selectedMorphFeature],
+        );
+      case WordZoomSelection.emoji:
+        return true;
+    }
+  }
 
   @override
   Widget build(BuildContext context) {