feat: Initial commit

lib/main.dart

@@ -0,0 +1,77 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:window_manager/window_manager.dart';
+import 'package:winui_n2n/application_exit_control.dart';
+import 'package:winui_n2n/edge_state.dart';
+import 'package:winui_n2n/shared_pref_singleton.dart';
+
+void main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  await windowManager.ensureInitialized();
+
+  WindowOptions windowOptions = const WindowOptions(
+    size: Size(630, 420),
+    center: true,
+    backgroundColor: Colors.transparent,
+    skipTaskbar: false,
+    titleBarStyle: TitleBarStyle.normal,
+    windowButtonVisibility: false,
+  );
+  windowManager.waitUntilReadyToShow(windowOptions, () async {
+    await windowManager.show();
+    await windowManager.focus();
+  });
+
+  await initSingleton();
+  runApp(const MainApp());
+}
+
+class MainApp extends StatefulWidget {
+  const MainApp({super.key});
+
+  @override
+  State<MainApp> createState() => _MainAppState();
+
+  static _MainAppState of(BuildContext context) {
+    return context.findAncestorStateOfType<_MainAppState>()!;
+  }
+}
+
+class _MainAppState extends State<MainApp> {
+  // false = dark, true = light
+  ThemeMode _themeMode =
+      SharedPrefSingleton().appTheme ? ThemeMode.light : ThemeMode.dark;
+  ThemeMode get getCurrentTheme => _themeMode;
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      theme: ThemeData(),
+      darkTheme: ThemeData.dark(),
+      themeMode: _themeMode,
+      home: const Scaffold(
+        body: ApplicationExitControl(),
+      ),
+    );
+  }
+
+  void changeTheme(ThemeMode mode) {
+    mode == ThemeMode.light
+        ? SharedPrefSingleton().setAppTheme(true).then((onValue) {
+            setState(() {
+              _themeMode = mode;
+            });
+          })
+        : SharedPrefSingleton().setAppTheme(false).then((onValue) {
+            setState(() {
+              _themeMode = mode;
+            });
+          });
+  }
+}
+
+Future<void> initSingleton() async {
+  EdgeState.instance;
+  await SharedPrefSingleton().initialize();
+}