use dispose function of workout_provider to cleanup instead of high level provider

lib/main.dart

@@ -2,13 +2,11 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:smoke_cess_app/pages/main_page.dart';
 import 'package:smoke_cess_app/providers/tasks_provider.dart';
-import 'package:smoke_cess_app/providers/timer_provider.dart';
 import 'package:smoke_cess_app/services/notification_service.dart';
 import 'package:timezone/data/latest.dart' as tz;
 import 'globals.dart' as globals;
 import 'providers/page_provider.dart';
 import 'providers/settings_provider.dart';
-import 'providers/workout_provider.dart';
 
 void main() {
   // to ensure all the widgets are initialized.
@@ -27,7 +25,6 @@ class MyApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    TimerProvider timerProvider = TimerProvider();
     return MultiProvider(
         providers: [
           ChangeNotifierProvider(create: (context) => SettingsProvider()),
@@ -39,9 +36,6 @@ class MyApp extends StatelessWidget {
           ChangeNotifierProvider(
             create: (context) => PageProvider(),
           ),
-          ChangeNotifierProvider(create: (context) => timerProvider),
-          ChangeNotifierProvider(
-              create: (context) => WorkoutProvider(timerProvider)),
         ],
         child: const MaterialApp(
           title: _title,

lib/pages/main_page.dart

@@ -3,7 +3,6 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:smoke_cess_app/providers/page_provider.dart';
 import 'package:smoke_cess_app/providers/tasks_provider.dart';
-import 'package:smoke_cess_app/providers/workout_provider.dart';
 import 'package:smoke_cess_app/services/pages_service.dart';
 import 'package:smoke_cess_app/providers/settings_provider.dart';
 
@@ -22,11 +21,9 @@ class MyHomePageState extends State<MyHomePage> {
 
   void _onItemTapped(int index) {
     PageProvider pageProvider = context.read<PageProvider>();
-    WorkoutProvider workoutProvider = context.read<WorkoutProvider>();
     setState(() {
       if (_isConfigured) {
         pageProvider.showForm = false;
-        workoutProvider.interruptWorkout();
         _selectedIndex = index;
         return;
       }

lib/providers/workout_provider.dart

@@ -105,6 +105,12 @@ class WorkoutProvider extends ChangeNotifier {
         Workout(motivationBefore, motivationAfter, DateTime.now());
     globals.databaseService.addWorkout(workout);
   }
+
+  @override
+  void dispose() {
+    interruptWorkout();
+    super.dispose();
+  }
 }
 
 Map<String, Map<String, dynamic>> _workoutPhaseSettings = {

lib/widgets/view_form_page.dart

@@ -5,9 +5,6 @@ import 'package:smoke_cess_app/services/pages_service.dart';
 import '../providers/input_provider.dart';
 import '../providers/page_provider.dart';
 import '../providers/tasks_provider.dart';
-import '../providers/timer_provider.dart';
-import '../services/date_service.dart';
-import 'timer_widget.dart';
 
 class ViewFormPage extends StatelessWidget {
   final Widget form;
@@ -17,14 +14,11 @@ class ViewFormPage extends StatelessWidget {
       {super.key, required this.form, required this.view, required this.page});
 
   void showPopup(BuildContext context) async {
-    TimerProvider timerProvider = context.read<TimerProvider>();
-    Duration duration = await getTimeTill(page);
-    timerProvider.startTimer(duration);
     AwesomeDialog(
       context: context,
       dialogType: DialogType.info,
       title: 'Bald erst wieder',
-      body: TimerWidget(duration: duration),
+      desc: 'hier kommt ein timer hin',
     ).show();
   }
 

lib/widgets/workout_form.dart

@@ -1,4 +1,7 @@
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import '../providers/timer_provider.dart';
+import '../providers/workout_provider.dart';
 import 'mute_button.dart';
 import 'workout_timer_widget.dart';
 
@@ -7,15 +10,22 @@ class WorkoutForm extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Column(
-      mainAxisAlignment: MainAxisAlignment.center,
-      children: const [
-        Align(
-          alignment: Alignment.topLeft,
-          child: MuteButton(),
-        ),
-        WorkoutTimerWidget()
-      ],
-    );
+    TimerProvider timerProvider = TimerProvider();
+    return MultiProvider(
+        providers: [
+          ChangeNotifierProvider(create: (context) => timerProvider),
+          ChangeNotifierProvider(
+              create: (context) => WorkoutProvider(timerProvider)),
+        ],
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: const [
+            Align(
+              alignment: Alignment.topLeft,
+              child: MuteButton(),
+            ),
+            WorkoutTimerWidget()
+          ],
+        ));
   }
 }