第一次提交

lib/providers/theme.dart

@@ -0,0 +1,55 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../models/enum_theme.dart';
+import '../config.dart';
+
+const _keyThemeMode = AppSharedPreferencesKey.themeMode;
+const _keyUseDynamic = AppSharedPreferencesKey.useDynamicColor;
+
+final themeModeProvider = StateNotifierProvider<ThemeModeNotifier, ThemeModeType>(
+  (ref) => ThemeModeNotifier(),
+);
+
+final useDynamicColorProvider = StateNotifierProvider<UseDynamicColorNotifier, bool>(
+  (ref) => UseDynamicColorNotifier(),
+);
+
+class UseDynamicColorNotifier extends StateNotifier<bool> {
+  UseDynamicColorNotifier() : super(true) {
+    _load();
+  }
+
+  Future<void> _load() async {
+    final prefs = await SharedPreferences.getInstance();
+    state = prefs.getBool(_keyUseDynamic) ?? AppConfig.useDynamicColor;
+  }
+
+  Future<void> set(bool value) async {
+    state = value;
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setBool(_keyUseDynamic, value);
+  }
+}
+
+
+class ThemeModeNotifier extends StateNotifier<ThemeModeType> {
+  ThemeModeNotifier() : super(ThemeModeType.system) {
+    _load();
+  }
+
+  Future<void> _load() async {
+    final prefs = await SharedPreferences.getInstance();
+    final index = prefs.getInt(_keyThemeMode);
+    if (index != null) {
+      state = ThemeModeType.fromIndex(index);
+    } else state = AppConfig.themeMode;
+  }
+
+  Future<void> set(ThemeModeType mode) async {
+    state = mode;
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setInt(_keyThemeMode, mode.index);
+  }
+}