change a bunch of stuff, seperate tracking for progress, updated custom srs layout

lib/src/screens/custom_srs_screen.dart

@@ -1,7 +1,6 @@
 import 'package:flutter/material.dart';
 import '../models/custom_kanji_item.dart';
 import '../services/custom_deck_repository.dart';
-import 'add_card_screen.dart';
 import 'custom_quiz_screen.dart';
 
 class CustomSrsScreen extends StatefulWidget {
@@ -15,7 +14,6 @@ class _CustomSrsScreenState extends State<CustomSrsScreen> with SingleTickerProv
   late TabController _tabController;
   final _deckRepository = CustomDeckRepository();
   List<CustomKanjiItem> _deck = [];
-  List<CustomKanjiItem> _reviewDeck = [];
   bool _useKanji = false;
   final _quizScreenKeys = [
     GlobalKey<CustomQuizScreenState>(),
@@ -45,17 +43,8 @@ class _CustomSrsScreenState extends State<CustomSrsScreen> with SingleTickerProv
 
   Future<void> _loadDeck() async {
     final deck = await _deckRepository.getCustomDeck();
-    final now = DateTime.now();
-    final reviewDeck = deck.where((item) {
-      if (!item.useInterval) {
-        return true;
-      }
-      return item.nextReview == null || item.nextReview!.isBefore(now);
-    }).toList();
-
     setState(() {
       _deck = deck;
-      _reviewDeck = reviewDeck;
     });
   }
 
@@ -64,7 +53,6 @@ class _CustomSrsScreenState extends State<CustomSrsScreen> with SingleTickerProv
     if (index != -1) {
       setState(() {
         _deck[index] = item;
-        _reviewDeck.removeWhere((element) => element.characters == item.characters);
       });
       await _deckRepository.saveDeck(_deck);
     }
@@ -72,6 +60,29 @@ class _CustomSrsScreenState extends State<CustomSrsScreen> with SingleTickerProv
 
   @override
   Widget build(BuildContext context) {
+    final now = DateTime.now();
+    final jpnToEngReviewDeck = _deck.where((item) {
+      if (!item.useInterval) return true;
+      return item.srsData.japaneseToEnglishNextReview == null ||
+          item.srsData.japaneseToEnglishNextReview!.isBefore(now);
+    }).toList();
+
+    final engToJpnReviewDeck = _deck.where((item) {
+      if (!item.useInterval) return true;
+      return item.srsData.englishToJapaneseNextReview == null ||
+          item.srsData.englishToJapaneseNextReview!.isBefore(now);
+    }).toList();
+
+    final listeningReviewDeck = _deck.where((item) {
+      if (!item.useInterval) return true;
+      return item.srsData.listeningComprehensionNextReview == null ||
+          item.srsData.listeningComprehensionNextReview!.isBefore(now);
+    }).toList();
+
+    final allDecksEmpty = jpnToEngReviewDeck.isEmpty &&
+        engToJpnReviewDeck.isEmpty &&
+        listeningReviewDeck.isEmpty;
+
     return Scaffold(
       appBar: AppBar(
         title: const Text('Custom SRS'),
@@ -102,43 +113,37 @@ class _CustomSrsScreenState extends State<CustomSrsScreen> with SingleTickerProv
       ),
       body: _deck.isEmpty
           ? const Center(child: Text('Add cards to start quizzing!'))
-          : _reviewDeck.isEmpty
+          : allDecksEmpty
               ? const Center(child: Text('No cards due for review.'))
               : TabBarView(
               controller: _tabController,
               children: [
                 CustomQuizScreen(
                   key: _quizScreenKeys[0],
-                  deck: _reviewDeck,
+                  deck: jpnToEngReviewDeck,
                   quizMode: CustomQuizMode.japaneseToEnglish,
                   onCardReviewed: _updateCard,
                   useKanji: _useKanji,
+                  isActive: _tabController.index == 0,
                 ),
                 CustomQuizScreen(
                   key: _quizScreenKeys[1],
-                  deck: _reviewDeck,
+                  deck: engToJpnReviewDeck,
                   quizMode: CustomQuizMode.englishToJapanese,
                   onCardReviewed: _updateCard,
                   useKanji: _useKanji,
+                  isActive: _tabController.index == 1,
                 ),
                 CustomQuizScreen(
                   key: _quizScreenKeys[2],
-                  deck: _reviewDeck,
+                  deck: listeningReviewDeck,
                   quizMode: CustomQuizMode.listeningComprehension,
                   onCardReviewed: _updateCard,
                   useKanji: _useKanji,
+                  isActive: _tabController.index == 2,
                 ),
               ],
             ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: () async {
-          await Navigator.of(context).push(
-            MaterialPageRoute(builder: (_) => const AddCardScreen()),
-          );
-          _loadDeck();
-        },
-        child: const Icon(Icons.add),
-      ),
     );
   }
 }