feat: 逻辑与页面布局分离

lib/pages/mine/mine_logic.dart

@@ -1,7 +1,14 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+import '../../core/config/locale_controller.dart';
 import '../../core/data/models/drama.dart';
 import '../../core/data/repositories/watch_history_repository.dart';
+import '../../l10n/app_localizations.dart';
 
-class MineLogic {
+enum MyPageAction { home, discover, resume }
+
+class MineLogic extends ChangeNotifier {
   MineLogic({
     required this.history,
     required this.drama,
@@ -15,6 +22,11 @@ class MineLogic {
   late Future<Duration?> position;
   int section;
   int filter = 0;
+  bool _disposed = false;
+
+  void notify() {
+    if (!_disposed) notifyListeners();
+  }
 
   void refreshPosition() {
     position = history.positionFor(
@@ -23,4 +35,82 @@ class MineLogic {
       drama.episodes.first.id,
     );
   }
+
+  void selectSection(int index) {
+    section = index;
+    notify();
+  }
+
+  void selectFilter(int index) {
+    filter = index;
+    notify();
+  }
+
+  void syncPage({
+    required bool active,
+    required bool wasActive,
+    required Drama nextDrama,
+    required bool dramaChanged,
+    required int sectionRequest,
+    required int previousSectionRequest,
+    required int initialSection,
+  }) {
+    if (active && (!wasActive || dramaChanged)) {
+      drama = nextDrama;
+      refreshPosition();
+      notify();
+    }
+    if (sectionRequest != previousSectionRequest) {
+      section = initialSection;
+      notify();
+    }
+  }
+
+  void act(
+    BuildContext context,
+    MyPageAction action, {
+    required bool embedded,
+    ValueChanged<MyPageAction>? onAction,
+  }) {
+    if (embedded) {
+      onAction?.call(action);
+    } else {
+      Navigator.pop(context, action);
+    }
+  }
+
+  Future<void> showLanguage(BuildContext context) async {
+    final l10n = AppLocalizations.of(context)!;
+    await showModalBottomSheet<void>(
+      context: context,
+      backgroundColor: const Color(0xFF1C1D22),
+      showDragHandle: true,
+      builder: (sheetContext) => SafeArea(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            ListTile(title: Text(l10n.language)),
+            for (final (code, label) in [
+              ('en', l10n.english),
+              ('zh', l10n.simplifiedChinese),
+            ])
+              ListTile(
+                title: Text(label),
+                onTap: () {
+                  context.read<LocaleController>().select(code);
+                  Navigator.pop(sheetContext);
+                },
+              ),
+            const SizedBox(height: 8),
+          ],
+        ),
+      ),
+    );
+  }
+
+  @override
+  void dispose() {
+    _disposed = true;
+    super.dispose();
+  }
 }