Make objective/topic/mode nullable lists instead of async (#3698)

* Make objective/topic/mode nullable lists instead of async

* Check for mount before setting state

---------

Co-authored-by: ggurdin <46800240+ggurdin@users.noreply.github.com>

lib/pangea/activity_generator/activity_generator.dart

@@ -50,6 +50,10 @@ class ActivityGeneratorState extends State<ActivityGenerator> {
 
   String? filename;
 
+  List<ActivitySettingResponseSchema>? topicItems;
+  List<ActivitySettingResponseSchema>? modeItems;
+  List<ActivitySettingResponseSchema>? objectiveItems;
+
   @override
   void initState() {
     super.initState();
@@ -60,7 +64,9 @@ class ActivityGeneratorState extends State<ActivityGenerator> {
         MatrixState.pangeaController.languageController.userL2?.langCode;
     selectedCefrLevel = LanguageLevelTypeEnum.a1;
     selectedNumberOfParticipants = 3;
-    _setModeImageURL();
+    _setMode();
+    _setTopic();
+    _setObjective();
   }
 
   @override
@@ -88,15 +94,6 @@ class ActivityGeneratorState extends State<ActivityGenerator> {
         numberOfParticipants: selectedNumberOfParticipants!,
       );
 
-  Future<List<ActivitySettingResponseSchema>> get topicItems =>
-      TopicListRepo.get(req);
-
-  Future<List<ActivitySettingResponseSchema>> get modeItems =>
-      ActivityModeListRepo.get(req);
-
-  Future<List<ActivitySettingResponseSchema>> get objectiveItems =>
-      LearningObjectiveListRepo.get(req);
-
   Room? get room => Matrix.of(context).client.getRoomById(widget.roomID);
 
   String? validateNotNull(String? value) {
@@ -106,31 +103,33 @@ class ActivityGeneratorState extends State<ActivityGenerator> {
     return null;
   }
 
-  Future<String> _randomTopic() async {
-    final topics = await topicItems;
-    return (topics..shuffle()).first.name;
-  }
+  String? get _randomTopic => (topicItems?..shuffle())?.first.name;
 
-  Future<String> _randomObjective() async {
-    final objectives = await objectiveItems;
-    return (objectives..shuffle()).first.name;
-  }
+  String? get _randomObjective => (objectiveItems?..shuffle())?.first.name;
 
-  Future<String> _randomMode() async {
-    final modes = await modeItems;
-    return (modes..shuffle()).first.name;
-  }
+  String? get _randomMode => (modeItems?..shuffle())?.first.name;
 
-  void randomizeSelections() async {
-    final selectedTopic = await _randomTopic();
-    final selectedObjective = await _randomObjective();
-    final selectedMode = await _randomMode();
+  bool get randomizeEnabled =>
+      topicItems != null && objectiveItems != null && modeItems != null;
 
-    setState(() {
-      topicController.text = selectedTopic;
-      objectiveController.text = selectedObjective;
-      modeController.text = selectedMode;
-    });
+  void randomizeSelections() {
+    final selectedTopic = _randomTopic;
+    final selectedObjective = _randomObjective;
+    final selectedMode = _randomMode;
+
+    if (selectedTopic == null ||
+        selectedObjective == null ||
+        selectedMode == null) {
+      return;
+    }
+
+    if (mounted) {
+      setState(() {
+        topicController.text = selectedTopic;
+        objectiveController.text = selectedObjective;
+        modeController.text = selectedMode;
+      });
+    }
   }
 
   void clearSelections() async {
@@ -164,15 +163,45 @@ class ActivityGeneratorState extends State<ActivityGenerator> {
     setState(() => selectedCefrLevel = value);
   }
 
-  Future<ActivitySettingResponseSchema?> get _selectedMode async {
-    final modes = await modeItems;
-    return modes.firstWhereOrNull(
+  ActivitySettingResponseSchema? get _selectedMode {
+    return modeItems?.firstWhereOrNull(
       (element) => element.name.toLowerCase() == planRequest.mode.toLowerCase(),
     );
   }
 
+  Future<void> _setTopic() async {
+    final topic = await TopicListRepo.get(req);
+
+    if (mounted) {
+      setState(() {
+        topicItems = topic;
+      });
+    }
+  }
+
+  Future<void> _setMode() async {
+    final mode = await ActivityModeListRepo.get(req);
+
+    if (mounted) {
+      setState(() {
+        modeItems = mode;
+      });
+      _setModeImageURL();
+    }
+  }
+
+  Future<void> _setObjective() async {
+    final objective = await LearningObjectiveListRepo.get(req);
+
+    if (mounted) {
+      setState(() {
+        objectiveItems = objective;
+      });
+    }
+  }
+
   Future<void> _setModeImageURL() async {
-    final mode = await _selectedMode;
+    final mode = _selectedMode;
     if (mode == null) return;
 
     final modeName =

lib/pangea/activity_generator/activity_generator_view.dart

@@ -254,7 +254,9 @@ class ActivityGeneratorView extends StatelessWidget {
                       child: Padding(
                         padding: const EdgeInsets.only(left: 8.0),
                         child: ElevatedButton(
-                          onPressed: controller.randomizeSelections,
+                          onPressed: controller.randomizeEnabled
+                              ? controller.randomizeSelections
+                              : null,
                           child: Row(
                             mainAxisAlignment: MainAxisAlignment.center,
                             children: [

lib/pangea/activity_planner/suggestion_form_field.dart

@@ -3,7 +3,7 @@ import 'package:flutter/material.dart';
 import 'package:fluffychat/pangea/activity_generator/list_request_schema.dart';
 
 class SuggestionFormField extends StatelessWidget {
-  final Future<List<ActivitySettingResponseSchema>> suggestions;
+  final List<ActivitySettingResponseSchema>? suggestions;
   final String? Function(String?)? validator;
   final int? maxLength;
   final String label;
@@ -12,7 +12,7 @@ class SuggestionFormField extends StatelessWidget {
 
   const SuggestionFormField({
     super.key,
-    required this.suggestions,
+    this.suggestions,
     required this.placeholder,
     this.validator,
     this.maxLength,
@@ -24,8 +24,8 @@ class SuggestionFormField extends StatelessWidget {
   Widget build(BuildContext context) {
     return Autocomplete<String>(
       initialValue: TextEditingValue(text: controller.text),
-      optionsBuilder: (TextEditingValue textEditingValue) async {
-        return (await suggestions)
+      optionsBuilder: (TextEditingValue textEditingValue) {
+        return (suggestions ?? [])
             .where((ActivitySettingResponseSchema option) {
           return option.name
               .toLowerCase()