feat: Initial commit

lib/application_exit_control.dart

@@ -0,0 +1,67 @@
+import 'dart:ui';
+import 'dart:io';
+import 'package:flutter/material.dart';
+import 'package:winui_n2n/edge_state.dart';
+import 'package:winui_n2n/home_page.dart';
+
+class ApplicationExitControl extends StatefulWidget {
+  const ApplicationExitControl({super.key});
+
+  @override
+  State<ApplicationExitControl> createState() => _ApplicationExitControlState();
+}
+
+class _ApplicationExitControlState extends State<ApplicationExitControl> {
+  late final AppLifecycleListener _listener;
+
+  @override
+  void initState() {
+    super.initState();
+    _listener = AppLifecycleListener(
+      onExitRequested: _handleExitRequest,
+    );
+  }
+
+  @override
+  void dispose() {
+    _listener.dispose();
+    super.dispose();
+  }
+
+  Future<AppExitResponse> _handleExitRequest() async {
+    if (EdgeState.instance.isRunning && EdgeState.instance.process != null) {
+      if (EdgeState.instance.process!.kill()) {
+        EdgeState.instance.isRunning = false;
+        EdgeState.instance.process = null;
+      } else {
+        // TODO: Handle abnormal close.
+        return AppExitResponse.cancel;
+      }
+    }
+
+    // Uninstall tap device before exit
+    final findTapResult = await Process.run(
+      "./tools/driver/devcon.exe",
+      ["hwids", "tap0901"],
+    );
+    if (!findTapResult.stdout
+        .toString()
+        .contains('No matching devices found.')) {
+      // Unstall tap device
+      await Process.run(
+        "./tools/driver/devcon.exe",
+        [
+          "remove",
+          "tap0901",
+        ],
+      );
+    }
+
+    return AppExitResponse.exit;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return const HomePage();
+  }
+}