fix error with browser view and levels

lib/src/screens/browse_screen.dart

@@ -173,11 +173,22 @@ class _BrowseScreenState extends State<BrowseScreen>
       itemBuilder: (context, index) {
         final level = sortedLevels[index];
         final levelItems = groupedItems[level]!;
-        final bool isDisabled = levelItems.every(
+        final bool isDisabled;
-          (item) => (item as dynamic).srsItems.values.every(
+        if (repository is DeckRepository) {
-            (srs) => (srs as SrsItem).disabled,
+          isDisabled = levelItems.every(
-          ),
+            (item) => (item as KanjiItem).srsItems.values.isNotEmpty && (item as KanjiItem).srsItems.values.cast<SrsItem>().every(
-        );
+              (srs) => srs.disabled,
+            ),
+          );
+        } else if (repository is VocabDeckRepository) {
+          isDisabled = levelItems.every(
+            (item) => (item as VocabularyItem).srsItems.values.isNotEmpty && (item as VocabularyItem).srsItems.values.cast<SrsItem>().every(
+              (srs) => srs.disabled,
+            ),
+          );
+        } else {
+          isDisabled = false; // Default to false if repository type is unknown
+        }
 
         return Column(
           children: [
@@ -197,7 +208,7 @@ class _BrowseScreenState extends State<BrowseScreen>
                   Checkbox(
                     value: !isDisabled,
                     onChanged: (value) {
-                      _toggleLevelExclusion(level, repository);
+                      _toggleLevelExclusion(level, repository, index, pageController);
                     },
                   ),
                 ],
@@ -227,13 +238,20 @@ class _BrowseScreenState extends State<BrowseScreen>
           final level = levels[index];
           final isSelected = index == currentPage;
           final items = isKanji ? _kanjiByLevel[level] : _vocabByLevel[level];
-          final bool isDisabled =
+          final bool isDisabled;
-              items?.every(
+          if (isKanji) {
-                (item) => (item as dynamic).srsItems.values.every(
+            isDisabled = items?.every(
-                  (srs) => (srs as SrsItem).disabled,
+                              (item) => (item as KanjiItem).srsItems.values.isNotEmpty && (item as KanjiItem).srsItems.values.cast<SrsItem>().every(
-                ),
+                                (srs) => srs.disabled,
-              ) ??
+                              ),                ) ??
-              false;
+                false;
+          } else {
+            isDisabled = items?.every(
+                              (item) => (item as VocabularyItem).srsItems.values.isNotEmpty && (item as VocabularyItem).srsItems.values.cast<SrsItem>().every(
+                                (srs) => srs.disabled,
+                              ),                ) ??
+                false;
+          }
 
           return Expanded(
             child: Padding(
@@ -636,14 +654,20 @@ class _BrowseScreenState extends State<BrowseScreen>
     _vocabSortedLevels = _vocabByLevel.keys.toList()..sort();
   }
 
-  Future<void> _toggleLevelExclusion(int level, dynamic repository) async {
+  Future<void> _toggleLevelExclusion(
+    int level,
+    dynamic repository,
+    int currentPageIndex,
+    PageController pageController,
+  ) async {
     final List<SrsItem> itemsToUpdate = [];
-    final bool currentlyDisabled;
+    List<dynamic> items = [];
+    bool currentlyDisabled = false;
 
     if (repository is DeckRepository) {
-      final items = _kanjiByLevel[level] ?? [];
+      items = _kanjiByLevel[level] ?? [];
       currentlyDisabled = items.every(
-        (item) => item.srsItems.values.every((srs) => srs.disabled),
+        (item) => (item as KanjiItem).srsItems.values.isNotEmpty && (item as KanjiItem).srsItems.values.cast<SrsItem>().every((srs) => srs.disabled),
       );
       for (final item in items) {
         for (final srsItem in item.srsItems.values) {
@@ -651,9 +675,9 @@ class _BrowseScreenState extends State<BrowseScreen>
         }
       }
     } else if (repository is VocabDeckRepository) {
-      final items = _vocabByLevel[level] ?? [];
+      items = _vocabByLevel[level] ?? [];
       currentlyDisabled = items.every(
-        (item) => item.srsItems.values.every((srs) => srs.disabled),
+        (item) => (item as VocabularyItem).srsItems.values.isNotEmpty && (item as VocabularyItem).srsItems.values.cast<SrsItem>().every((srs) => srs.disabled),
       );
       for (final item in items) {
         for (final srsItem in item.srsItems.values) {
@@ -664,12 +688,70 @@ class _BrowseScreenState extends State<BrowseScreen>
       return;
     }
 
-    for (final item in itemsToUpdate) {
+    if (itemsToUpdate.isEmpty) {
-      item.disabled = !currentlyDisabled;
+      // No SrsItems exist for this level, so create them and set their disabled status
+      for (final item in items) { // 'items' contains KanjiItem or VocabularyItem
+        // Determine quiz modes based on repository type
+        List<QuizMode> quizModes = [];
+        if (repository is DeckRepository) {
+          quizModes = [QuizMode.kanjiToEnglish, QuizMode.englishToKanji, QuizMode.reading];
+        } else if (repository is VocabDeckRepository) {
+          quizModes = [QuizMode.vocabToEnglish, QuizMode.englishToVocab, QuizMode.audioToEnglish];
+        }
+
+        for (final mode in quizModes) {
+          String? readingType;
+          if (mode == QuizMode.reading && repository is DeckRepository) {
+            // For reading mode, create SrsItems for both onyomi and kunyomi if they exist
+            if ((item as KanjiItem).onyomi.isNotEmpty) {
+              readingType = 'onyomi';
+              itemsToUpdate.add(SrsItem(
+                subjectId: item.id,
+                quizMode: mode,
+                readingType: readingType,
+                disabled: !currentlyDisabled,
+              ));
+            }
+            if ((item as KanjiItem).kunyomi.isNotEmpty) {
+              readingType = 'kunyomi';
+              itemsToUpdate.add(SrsItem(
+                subjectId: item.id,
+                quizMode: mode,
+                readingType: readingType,
+                disabled: !currentlyDisabled,
+              ));
+            }
+          } else {
+            itemsToUpdate.add(SrsItem(
+              subjectId: item.id,
+              quizMode: mode,
+              disabled: !currentlyDisabled,
+            ));
+          }
+        }
+      }
+      // Now insert these newly created SrsItems
+      if (repository is DeckRepository) {
+        for (final srsItem in itemsToUpdate) {
+          await (repository as DeckRepository).insertSrsItem(srsItem);
+        }
+      } else if (repository is VocabDeckRepository) {
+        for (final srsItem in itemsToUpdate) {
+          await (repository as VocabDeckRepository).insertVocabSrsItem(srsItem);
+        }
+      }
+    } else {
+      // Existing SrsItems, so update them
+      for (final item in itemsToUpdate) {
+        item.disabled = !currentlyDisabled;
+      }
+      await repository.updateSrsItems(itemsToUpdate);
     }
 
-    await repository.updateSrsItems(itemsToUpdate);
+    setState(() {});
-    _loadDecks();
+    if (pageController.hasClients) {
+      pageController.jumpToPage(currentPageIndex);
+    }
   }
 
   @override