Added central user credentials management

lib/view/login/login.dart

@@ -1,15 +1,11 @@
 
-import 'dart:developer';
-
 import 'package:flutter/material.dart';
 import 'package:flutter_login/flutter_login.dart';
 import 'package:provider/provider.dart';
-import 'package:shared_preferences/shared_preferences.dart';
 
-import '../../api/apiError.dart';
 import '../../api/webuntis/queries/authenticate/authenticateParams.dart';
 import '../../api/webuntis/queries/authenticate/authenticate.dart';
-import '../../api/webuntis/webuntisError.dart';
+import '../../model/accountData.dart';
 import '../../model/accountModel.dart';
 
 class Login extends StatefulWidget {
@@ -27,8 +23,7 @@ class _LoginState extends State<Login> {
   }
 
   Future<String?> _login(LoginData data) async {
-    SharedPreferences preferences = await SharedPreferences.getInstance();
-    preferences.setBool("loggedIn", false);
+    AccountData().removeData(context);
 
     try {
       await Authenticate(
@@ -36,23 +31,17 @@ class _LoginState extends State<Login> {
           user: data.name,
           password: data.password,
         )
-      ).run().then((value) => {
-        log(value.sessionId)
+      ).run().then((value) async {
+        await AccountData().setData(context, data.name, data.password);
+
+        setState(() {
+          displayDisclaimerText = false;
+        });
       });
-    } on WebuntisError catch(e) {
-      return e.toString();
-    } on ApiError catch(e) {
+    } catch(e) {
       return e.toString();
     }
 
-    setState(() {
-      displayDisclaimerText = false;
-    });
-
-    preferences.setBool("loggedIn", true);
-    preferences.setString("username", data.name);
-    preferences.setString("password", data.password);
-
     return null;
   }
 
@@ -69,7 +58,7 @@ class _LoginState extends State<Login> {
 
       userValidator: _checkInput,
       passwordValidator: _checkInput,
-      onSubmitAnimationCompleted: () => Provider.of<AccountModel>(context, listen: false).login(),
+      onSubmitAnimationCompleted: () => Provider.of<AccountModel>(context, listen: false).setState(AccountModelState.loggedIn),
 
       onLogin: _login,
       onSignup: null,