From 563eba8c5a680904c940bac1c89400d335a397f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Carlos=20V=C3=ADllora=20Tercero?= <carlosvt@unicarlos.com>
Date: Tue, 2 Feb 2021 15:17:17 +0100
Subject: [PATCH] :children_crossing: Store settings preferences on system
 shared_preferences

---
 lib/application/core/app_manager_cubit.dart   | 45 +++++++++++++++----
 lib/main.dart                                 |  2 +-
 .../settings/change_language_widget.dart      |  2 +-
 pubspec.yaml                                  |  1 +
 4 files changed, 39 insertions(+), 11 deletions(-)

diff --git a/lib/application/core/app_manager_cubit.dart b/lib/application/core/app_manager_cubit.dart
index e3dd7a3..587bcd6 100644
--- a/lib/application/core/app_manager_cubit.dart
+++ b/lib/application/core/app_manager_cubit.dart
@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:injectable/injectable.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
 part 'app_manager_cubit.freezed.dart';
 part 'app_manager_state.dart';
@@ -12,24 +13,50 @@ class AppManagerCubit extends Cubit<AppManagerState> {
   AppManagerCubit() : super(AppManagerState.initial());
 
 
-  void changeThemeData(ThemeMode themeMode){
-    emit(state.copyWith(themeMode: themeMode));
+  Future<void> changeThemeData(ThemeMode themeMode) async {
+
+    await _getPrefs().then((prefs) => prefs.setInt("theme", themeMode.index));
+    _setThemeData(themeMode);
   }
 
+  void _setThemeData(ThemeMode themeMode) {
+    emit(state.copyWith(themeMode: themeMode));
+  }
 
-  Future<void> getSystemRegion() async {
-    const channel = MethodChannel("com.cavitedev.scorecontacts/region");
-    final String region = await channel.invokeMethod("getSystemRegion");
-    emit(state.copyWith(region:region));
+  Future<void> changeLanguage(String languageCode) async {
+    await _getPrefs().then((prefs) => prefs.setString("language", languageCode));
+    _setLanguageCode(languageCode);
   }
 
-  Future<void> changeLanguage(BuildContext context, String languageCode) async {
-    if(languageCode == "system"){
+  void _setLanguageCode(String languageCode) {
+    if (languageCode == "system") {
       emit(state.copyWith(languageCode: null));
-    }else{
+    } else {
       emit(state.copyWith(languageCode: languageCode));
     }
+  }
 
+  Future<void> init() async {
+    _getSystemRegion();
+    _readPreferences();
   }
 
+  Future<void> _getSystemRegion() async {
+    const channel = MethodChannel("com.cavitedev.scorecontacts/region");
+    final String region = await channel.invokeMethod("getSystemRegion");
+    emit(state.copyWith(region: region));
+  }
+
+  Future<void> _readPreferences() async {
+    final prefs = await _getPrefs();
+    final int themeIndex = prefs.getInt('theme') ?? ThemeMode.system.index;
+    _setThemeData(ThemeMode.values[themeIndex]);
+    final String language = prefs.getString('language') ?? "system";
+    _setLanguageCode(language);
+  }
+
+  SharedPreferences _prefs;
+
+  Future<SharedPreferences> _getPrefs() async =>
+      _prefs == null ? SharedPreferences.getInstance() : Future.value(_prefs);
 }
diff --git a/lib/main.dart b/lib/main.dart
index 9640f28..9ca50c2 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -29,7 +29,7 @@ class MyApp extends StatelessWidget {
               getIt<AuthBloc>()..add(const AuthEvent.getUser()),
         ),
         BlocProvider(
-            create: (context) => getIt<AppManagerCubit>()..getSystemRegion())
+            create: (context) => getIt<AppManagerCubit>()..init())
       ],
       child: BlocBuilder<AppManagerCubit, AppManagerState>(
         builder: (context, state) => MaterialApp(
diff --git a/lib/presentation/settings/change_language_widget.dart b/lib/presentation/settings/change_language_widget.dart
index 06215ab..abe5417 100644
--- a/lib/presentation/settings/change_language_widget.dart
+++ b/lib/presentation/settings/change_language_widget.dart
@@ -90,7 +90,7 @@ class RadioLanguageColumn extends StatelessWidget {
       title: Text(msg),
       onChanged: (_) {
         Navigator.pop(context);
-        context.read<AppManagerCubit>().changeLanguage(context, value);
+        context.read<AppManagerCubit>().changeLanguage(value);
       },
     );
   }
diff --git a/pubspec.yaml b/pubspec.yaml
index 30522fa..3c02d5b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -23,6 +23,7 @@ dependencies:
   cloud_firestore: ^0.16.0
   google_sign_in: ^4.5.9
   flutter_bloc: ^6.1.1
+  shared_preferences: ^0.5.12+4
   dartz: ^0.9.2
   injectable: ^1.0.7
   get_it: ^5.0.6