feat: support launch at startup (#532)

ui/flutter/lib/app/modules/app/controllers/app_controller.dart

@@ -1,12 +1,13 @@
 import 'dart:async';
 import 'dart:convert';
+import 'dart:io';
 import 'dart:ui';
 
 import 'package:app_links/app_links.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_foreground_task/flutter_foreground_task.dart';
 import 'package:get/get.dart';
-import 'package:gopeed/database/entity.dart';
+import 'package:launch_at_startup/launch_at_startup.dart';
 import 'package:lecle_downloads_path_provider/lecle_downloads_path_provider.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:tray_manager/tray_manager.dart';
@@ -18,7 +19,9 @@ import '../../../../api/api.dart';
 import '../../../../api/model/downloader_config.dart';
 import '../../../../core/common/start_config.dart';
 import '../../../../database/database.dart';
+import '../../../../database/entity.dart';
 import '../../../../i18n/message.dart';
+import '../../../../main.dart';
 import '../../../../util/locale_manager.dart';
 import '../../../../util/log_util.dart';
 import '../../../../util/package_info.dart';
@@ -73,6 +76,7 @@ final allTrackerSubscribeUrlCdns = Map.fromIterable(allTrackerSubscribeUrls,
 class AppController extends GetxController with WindowListener, TrayListener {
   static StartConfig? _defaultStartConfig;
 
+  final autoStartup = false.obs;
   final startConfig = StartConfig().obs;
   final runningPort = 0.obs;
   final downloaderConfig = DownloaderConfig().obs;
@@ -98,6 +102,9 @@ class AppController extends GetxController with WindowListener, TrayListener {
 
     _initTrackerUpdate().onError((error, stackTrace) =>
         logger.w("initTrackerUpdate error", error, stackTrace));
+
+    _initLaunchAtStartup().onError((error, stackTrace) =>
+        logger.w("initLaunchAtStartup error", error, stackTrace));
   }
 
   @override
@@ -114,6 +121,12 @@ class AppController extends GetxController with WindowListener, TrayListener {
     }
   }
 
+  // According to the system_manager document, make sure to call setState once on the onWindowFocus event.
+  @override
+  void onWindowFocus() {
+    refresh();
+  }
+
   @override
   void onTrayIconMouseDown() {
     windowManager.show();
@@ -431,6 +444,17 @@ class AppController extends GetxController with WindowListener, TrayListener {
     }
   }
 
+  Future<void> _initLaunchAtStartup() async {
+    if (!Util.isWindows() && !Util.isLinux()) {
+      return;
+    }
+    launchAtStartup.setup(
+        appName: packageInfo.appName,
+        appPath: Platform.resolvedExecutable,
+        args: ['--${Args.flagHidden}']);
+    autoStartup.value = await launchAtStartup.isEnabled();
+  }
+
   Future<void> saveConfig() async {
     Database.instance.saveStartConfig(StartConfigEntity(
         network: startConfig.value.network,