Frontend first draft

frontend/pweb/lib/utils/share.dart

@@ -0,0 +1,40 @@
+// ignore: avoid_web_libraries_in_flutter
+import 'package:web/web.dart' as web;
+
+import 'package:flutter/material.dart';
+
+import 'package:share_plus/share_plus.dart';
+
+import 'package:pweb/utils/clipboard.dart';
+
+
+enum DeviceType { desktop, mobile, unknown }
+
+DeviceType getDeviceType() {
+  final userAgent = web.window.navigator.userAgent;
+  if (userAgent.contains('Mobile') || userAgent.contains('Android') || userAgent.contains('iPhone')) {
+    return DeviceType.mobile;
+  }
+  
+  if (userAgent.contains('Windows') || userAgent.contains('Macintosh') || userAgent.contains('Linux')) {
+    return DeviceType.desktop;
+  }
+
+  return DeviceType.unknown;
+}
+
+
+
+Future<void> share(BuildContext context, String content, String hint, String clipboardHint, {int delaySeconds = 1}) {
+
+  if (getDeviceType() != DeviceType.desktop) {
+    final RenderBox box = context.findRenderObject() as RenderBox;
+    return SharePlus.instance.share(ShareParams(
+      text: content,
+      subject: hint,
+      sharePositionOrigin: box.localToGlobal(Offset.zero) & box.size,
+    ));
+  } 
+  
+  return copyToClipboard(context, content, clipboardHint, delaySeconds: delaySeconds);
+}