Check token info and update to new info

lib/platform/device.dart

@@ -1 +1,10 @@
 export './device_other.dart' if (dart.library.html) './device_web.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+
+Future<String?> get clientVersion async {
+  try {
+    return (await PackageInfo.fromPlatform()).version;
+  } catch (_) {
+    return null;
+  }
+}

lib/platform/device_other.dart

@@ -1,6 +1,21 @@
 import 'dart:io';
+import 'package:flutter/services.dart';
+import 'package:logging/logging.dart';
 
-String? get device => null;
+const _platform = MethodChannel("lifegpc.eh_downloader_flutter/device");
+final _log = Logger("platformDevice");
+String? _device;
+
+Future<String?> get device async {
+  if (_device == null) {
+    try {
+      _device = await _platform.invokeMethod<String>("deviceName");
+    } catch (e) {
+      _log.warning("Failed to get device:", e);
+    }
+  }
+  return _device;
+}
 
 String? get clientPlatform {
   if (Platform.isAndroid) return "android";

lib/platform/device_web.dart

@@ -3,7 +3,7 @@ import 'package:ua_parser_js/ua_parser_js.dart';
 final _uaParser = UAParser();
 String? _device;
 
-String? get device {
+Future<String?> get device {
   if (_device == null) {
     final ua = _uaParser.getResult();
     _device = ua.browser.name;
@@ -11,7 +11,7 @@ String? get device {
       _device = "$_device ${ua.browser.version}";
     }
   }
-  return _device;
+  return Future.value(_device);
 }
 
 String? get clientPlatform => "web";