Move onBoardingCompleted from AppState to Settings

I want to get rid of the AppState entirely. It serves exactly the same
purpose as Settings.

lib/app.dart

@@ -289,7 +289,7 @@ class _JournalAppState extends State<JournalApp> {
     var settings = Provider.of<Settings>(context);
 
     var initialRoute = '/';
-    if (!stateContainer.appState.onBoardingCompleted) {
+    if (!settings.onBoardingCompleted) {
       initialRoute = '/onBoarding';
     }
     if (settings.homeScreen == SettingsHomeScreen.AllFolders) {
@@ -354,7 +354,7 @@ class _JournalAppState extends State<JournalApp> {
           stateContainer.completeGitHostSetup,
         );
       case '/onBoarding':
-        return OnBoardingScreen(stateContainer.completeOnBoarding);
+        return OnBoardingScreen();
       case '/purchase':
         return PurchaseScreen();
       case '/purchase_thank_you':

lib/appstate.dart

@@ -22,8 +22,6 @@ class AppState {
   String remoteGitRepoFolderName = "";
   bool remoteGitRepoConfigured = false;
 
-  bool onBoardingCompleted = false;
-
   SyncStatus syncStatus = SyncStatus.Unknown;
   int numChanges = 0;
 
@@ -44,7 +42,6 @@ class AppState {
     remoteGitRepoConfigured = pref.getBool("remoteGitRepoConfigured") ?? false;
     localGitRepoFolderName = pref.getString("localGitRepoPath") ?? "";
     remoteGitRepoFolderName = pref.getString("remoteGitRepoPath") ?? "";
-    onBoardingCompleted = pref.getBool("onBoardingCompleted") ?? false;
     gitBaseDirectory = pref.getString("gitBaseDirectory") ?? "";
   }
 
@@ -54,7 +51,6 @@ class AppState {
     Log.i("remoteGitRepoConfigured: $remoteGitRepoConfigured");
     Log.i("localGitRepoFolderName: $localGitRepoFolderName");
     Log.i("remoteGitRepoFolderName: $remoteGitRepoFolderName");
-    Log.i("onBoardingCompleted: $onBoardingCompleted");
     Log.i("gitBaseDirectory: $gitBaseDirectory");
     Log.i(" ------------------ ");
   }
@@ -64,7 +60,6 @@ class AppState {
     await pref.setBool("remoteGitRepoConfigured", remoteGitRepoConfigured);
     await pref.setString("localGitRepoPath", localGitRepoFolderName);
     await pref.setString("remoteGitRepoPath", remoteGitRepoFolderName);
-    await pref.setBool("onBoardingCompleted", onBoardingCompleted);
     await pref.setString("gitBaseDirectory", gitBaseDirectory);
   }
 }

lib/screens/onboarding_screens.dart

@@ -3,11 +3,12 @@ import 'package:flutter/material.dart';
 import 'package:auto_size_text/auto_size_text.dart';
 import 'package:dots_indicator/dots_indicator.dart';
 import 'package:function_types/function_types.dart';
+import 'package:provider/provider.dart';
+
+import 'package:gitjournal/settings.dart';
 
 class OnBoardingScreen extends StatefulWidget {
-  final Func0<void> onCompletedFunction;
-
-  OnBoardingScreen(this.onCompletedFunction);
+  OnBoardingScreen();
 
   @override
   OnBoardingScreenState createState() {
@@ -109,7 +110,9 @@ class OnBoardingScreenState extends State<OnBoardingScreen> {
   }
 
   void _finish() {
-    widget.onCompletedFunction();
+    var settings = Provider.of<Settings>(context);
+    settings.onBoardingCompleted = true;
+    settings.save();
 
     Navigator.pop(context);
     Navigator.pushNamed(context, "/");

lib/settings.dart

@@ -16,6 +16,8 @@ class Settings extends ChangeNotifier {
   static Settings get instance => _singleton;
 
   // Properties
+  bool onBoardingCompleted = false;
+
   String gitAuthor = "GitJournal";
   String gitAuthorEmail = "app@gitjournal.io";
   NoteFileNameFormat noteFileNameFormat = NoteFileNameFormat.Default;
@@ -64,6 +66,8 @@ class Settings extends ChangeNotifier {
   bool saveTitleInH1 = true;
 
   void load(SharedPreferences pref) {
+    onBoardingCompleted = pref.getBool("onBoardingCompleted") ?? false;
+
     gitAuthor = pref.getString("gitAuthor") ?? gitAuthor;
     gitAuthorEmail = pref.getString("gitAuthorEmail") ?? gitAuthorEmail;
 
@@ -142,6 +146,8 @@ class Settings extends ChangeNotifier {
     var pref = await SharedPreferences.getInstance();
     var defaultSet = Settings._internal();
 
+    await pref.setBool("onBoardingCompleted", onBoardingCompleted);
+
     _setString(pref, "gitAuthor", gitAuthor, defaultSet.gitAuthor);
     _setString(
         pref, "gitAuthorEmail", gitAuthorEmail, defaultSet.gitAuthorEmail);
@@ -244,6 +250,7 @@ class Settings extends ChangeNotifier {
 
   Map<String, String> toMap() {
     return <String, String>{
+      "onBoardingCompleted": onBoardingCompleted.toString(),
       "gitAuthor": gitAuthor,
       "gitAuthorEmail": gitAuthorEmail,
       "noteFileNameFormat": noteFileNameFormat.toInternalString(),

lib/state_container.dart

@@ -375,12 +375,6 @@ class StateContainer with ChangeNotifier {
     }();
   }
 
-  void completeOnBoarding() {
-    appState.onBoardingCompleted = true;
-    _persistConfig();
-    notifyListeners();
-  }
-
   Future _persistConfig() async {
     var pref = await SharedPreferences.getInstance();
     await appState.save(pref);