Change flutter version + add manual-update

lib/main.dart

@@ -1,9 +1,82 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
+import 'package:shorebird_code_push/shorebird_code_push.dart';
+import 'package:restart_app/restart_app.dart';
+
 
 void main() {
   runApp(const MyApp());
 }
 
+class ShorebirdPatch extends StatefulWidget {
+  @override
+  State<StatefulWidget> createState() => _ShorebirdPatchState();
+}
+
+enum PatchState {
+  loading,
+  noUpdate,
+  updateReady;
+}
+
+class _ShorebirdPatchState extends State<ShorebirdPatch> {
+  final shorebird = ShorebirdCodePush();
+  late Timer timer;
+  PatchState patchState = PatchState.noUpdate;
+
+  @override
+  void initState() {
+    timer = Timer.periodic(const Duration(minutes: 5), (timer) async {
+      if (!shorebird.isShorebirdAvailable()) {
+        timer.cancel();
+        return;
+      }
+      if (!await shorebird.isNewPatchAvailableForDownload()) {
+        setState(() {
+          patchState = PatchState.noUpdate;
+        });
+        return;
+      }
+      final download = shorebird.downloadUpdateIfAvailable();
+      setState(() {
+        patchState = PatchState.loading;
+      });
+      await download;
+      if (await shorebird.isNewPatchReadyToInstall()) {
+        setState(() {
+          patchState = PatchState.updateReady;
+        });
+        return;
+      }
+    });
+    super.initState();
+  }
+
+  @override
+  void dispose() {
+    timer.cancel();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    switch (patchState) {
+      case PatchState.loading:
+        return const SizedBox.square(dimension: 48, child: Center(child: CircularProgressIndicator()));
+      case PatchState.noUpdate:
+        return const SizedBox.shrink();
+      case PatchState.updateReady:
+        return InkWell(
+          child: const SizedBox.square(dimension: 48, child: Icon(Icons.update, size: 24)),
+          onTap: () {
+            Restart.restartApp();
+          },
+        );
+    }
+  }
+}
+
 class MyApp extends StatelessWidget {
   const MyApp({super.key});
 
@@ -22,6 +95,7 @@ class MyApp extends StatelessWidget {
 
 class MyHomePage extends StatefulWidget {
   const MyHomePage({super.key, required this.title});
+
   final String title;
 
   @override
@@ -43,6 +117,7 @@ class _MyHomePageState extends State<MyHomePage> {
       appBar: AppBar(
         backgroundColor: Theme.of(context).colorScheme.inversePrimary,
         title: Text(widget.title),
+        actions: [ShorebirdPatch()],
       ),
       body: Center(
         child: Column(