Save selected theme to shared preferences

6 files changed, 108 insertions, 6 deletions

diff --git a/lib/main.dart b/lib/main.dart
index 49e59ac..8af7617 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -42,12 +42,9 @@ class PMSNA1 extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final ThemeData? theme = context.watch<ThemeProvider>().theme;
-    // return MaterialApp(
-    //   theme: theme ?? ThemeSettings.darkTheme,
-    //   routes: getApplicationRoutes(),
-    //   initialRoute: '/login',
-    // );
+    final ThemeProvider provider = context.watch<ThemeProvider>();
+    final ThemeData? theme = provider.theme;
+    provider.syncFromPrefs();
     return MaterialApp(
       theme: theme ?? ThemeSettings.lightTheme,
       darkTheme: theme ?? ThemeSettings.darkTheme,
diff --git a/lib/providers/theme_provider.dart b/lib/providers/theme_provider.dart
index b438d84..14bc6f8 100644
--- a/lib/providers/theme_provider.dart
+++ b/lib/providers/theme_provider.dart
@@ -1,11 +1,23 @@
 import 'package:flutter/material.dart';
+import 'package:pmsna1/settings/preferences.dart';
 
 class ThemeProvider with ChangeNotifier {
+  bool synced = false;
   ThemeData? _theme;
 
+  void syncFromPrefs() {
+    if (synced) return;
+    Preferences.getTheme().then((t) {
+      synced = true;
+      _theme = t;
+      notifyListeners();
+    });
+  }
+
   ThemeData? get theme => _theme;
 
   set theme(ThemeData? theme) {
+    Preferences.setTheme(theme);
     _theme = theme;
     notifyListeners();
   }
diff --git a/lib/settings/preferences.dart b/lib/settings/preferences.dart
new file mode 100644
index 0000000..f6516f9
--- /dev/null
+++ b/lib/settings/preferences.dart
@@ -0,0 +1,34 @@
+import 'package:flutter/material.dart';
+import 'package:pmsna1/settings/themes.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class Preferences {
+  static SharedPreferences? _prefs;
+
+  static Future<SharedPreferences> get prefs async {
+    _prefs ??= await SharedPreferences.getInstance();
+    return _prefs!;
+  }
+
+  static Future<ThemeData?> getTheme() async {
+    switch ((await prefs).getString('theme')) {
+      case 'light':
+        return ThemeSettings.lightTheme;
+      case 'dark':
+        return ThemeSettings.darkTheme;
+    }
+    return null;
+  }
+
+  static void setTheme(ThemeData? theme) {
+    prefs.then((p) {
+      if (theme == ThemeSettings.lightTheme) {
+        p.setString('theme', 'light');
+      } else if (theme == ThemeSettings.darkTheme) {
+        p.setString('theme', 'dark');
+      } else {
+        p.remove('theme');
+      }
+    });
+  }
+}
diff --git a/macos/Flutter/GeneratedPluginRegistrant.swift b/macos/Flutter/GeneratedPluginRegistrant.swift
index 2bfe7e4..eefcc6d 100644
--- a/macos/Flutter/GeneratedPluginRegistrant.swift
+++ b/macos/Flutter/GeneratedPluginRegistrant.swift
@@ -6,9 +6,11 @@ import FlutterMacOS
 import Foundation
 
 import path_provider_foundation
+import shared_preferences_foundation
 import sqflite
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
+  SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
   SqflitePlugin.register(with: registry.registrar(forPlugin: "SqflitePlugin"))
 }
diff --git a/pubspec.lock b/pubspec.lock
index a9b2bbd..773eaa6 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -392,6 +392,62 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.0.5"
+  shared_preferences:
+    dependency: "direct main"
+    description:
+      name: shared_preferences
+      sha256: ee6257848f822b8481691f20c3e6d2bfee2e9eccb2a3d249907fcfb198c55b41
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.18"
+  shared_preferences_android:
+    dependency: transitive
+    description:
+      name: shared_preferences_android
+      sha256: a51a4f9375097f94df1c6e0a49c0374440d31ab026b59d58a7e7660675879db4
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.16"
+  shared_preferences_foundation:
+    dependency: transitive
+    description:
+      name: shared_preferences_foundation
+      sha256: "6b84fdf06b32bb336f972d373cd38b63734f3461ba56ac2ba01b56d052796259"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
+  shared_preferences_linux:
+    dependency: transitive
+    description:
+      name: shared_preferences_linux
+      sha256: d7fb71e6e20cd3dfffcc823a28da3539b392e53ed5fc5c2b90b55fdaa8a7e8fa
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
+  shared_preferences_platform_interface:
+    dependency: transitive
+    description:
+      name: shared_preferences_platform_interface
+      sha256: "824bfd02713e37603b2bdade0842e47d56e7db32b1dcdd1cae533fb88e2913fc"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
+  shared_preferences_web:
+    dependency: transitive
+    description:
+      name: shared_preferences_web
+      sha256: "6737b757e49ba93de2a233df229d0b6a87728cea1684da828cbc718b65dcf9d7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.5"
+  shared_preferences_windows:
+    dependency: transitive
+    description:
+      name: shared_preferences_windows
+      sha256: bd014168e8484837c39ef21065b78f305810ceabc1d4f90be6e3b392ce81b46d
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
   sky_engine:
     dependency: transitive
     description: flutter
diff --git a/pubspec.yaml b/pubspec.yaml
index 8bffd86..f31d24f 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -19,6 +19,7 @@ dependencies:
   email_validator: ^2.1.17
   concentric_transition: ^1.0.3
   lottie: ^2.2.0
+  shared_preferences: ^2.0.18
 
 dev_dependencies:
   flutter_test: