refactor(core,gui): make all needed changes to send and receive files on linux and android

flutter_test_gui/lib/consts/consts.dart

@@ -1,7 +1,11 @@
 import 'package:flutter/material.dart';
 
 class Constants {
-  static const backColor = Color(0xFF32363E);
-  static const highlightColor = Color(0xFF98C379);
-  static const textColor = Color(0xFFABB2BF);
+  static const backColor = Color(0xFF303446);
+  static const highlightColor = Color(0xFF8caaee);
+  static const textColor = Color(0xFFc6d0f5);
+  // static const backColor = Color(0xFF32363E);
+  // static const highlightColor = Color(0xFF98C379);
+  // static const highlightColor = Color(0xFFa6d189);
+  // static const textColor = Color(0xFFABB2BF);
 }

flutter_test_gui/lib/main.dart

@@ -6,6 +6,7 @@ import 'package:bitsdojo_window/bitsdojo_window.dart';
 import 'package:flutter_test_gui/pages/settings_screen.dart';
 import 'package:flutter_test_gui/pages/send_screen.dart';
 import 'package:flutter_test_gui/pages/receive_screen.dart';
+import 'package:flutter_test_gui/consts/consts.dart';
 
 Future<void> main() async {
   await RustLib.init();
@@ -23,9 +24,9 @@ Future<void> main() async {
   }
 }
 
-const backColor = Color(0xFF32363E);
-const highlightColor = Color(0xFF98C379);
-const textColor = Color(0xFFABB2BF);
+// const backColor = Color(0xFF32363E);
+// const highlightColor = Color(0xFF98C379);
+// const textColor = Color(0xFFABB2BF);
 
 class MyApp extends StatefulWidget {
   const MyApp({super.key});
@@ -73,13 +74,13 @@ class _MyHomePageState extends State<MyHomePage> {
     return MaterialApp(
       debugShowCheckedModeBanner: false,
       home: Scaffold(
-        backgroundColor: backColor,
+        backgroundColor: Constants.backColor,
         appBar: AppBar(
-          backgroundColor: const Color(0xFF282C34),
+          backgroundColor: const Color(0xFF292c3c), //0xFF282C34),
           centerTitle: true,
           title: Text(
             widget.title,
-            style: const TextStyle(color: textColor),
+            style: const TextStyle(color: Constants.textColor),
           ),
           actions: [
             PopupMenuButton<String>(
@@ -102,7 +103,7 @@ class _MyHomePageState extends State<MyHomePage> {
         ),
         body: _screens[_selectedIndex],
         bottomNavigationBar: BottomNavigationBar(
-          backgroundColor: const Color(0xFF282C34),
+          backgroundColor: const Color(0xFF292c3c), //0xFF282C34),
           items: const <BottomNavigationBarItem>[
             BottomNavigationBarItem(
               icon: Icon(Icons.send),
@@ -114,8 +115,8 @@ class _MyHomePageState extends State<MyHomePage> {
             ),
           ],
           currentIndex: _selectedIndex,
-          selectedItemColor: highlightColor,
-          unselectedItemColor: textColor,
+          selectedItemColor: Constants.highlightColor,
+          unselectedItemColor: Constants.textColor,
           onTap: _onItemTapped,
         ),
       ),

flutter_test_gui/lib/pages/receive_screen.dart

@@ -1,5 +1,6 @@
 import 'dart:io';
 
+import 'package:file_picker/file_picker.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test_gui/main.dart';
 import 'package:mobile_scanner/mobile_scanner.dart';
@@ -31,7 +32,8 @@ class ReceiveScreenState extends State<ReceiveScreen> {
           if (barcode.raw == null) {
             debugPrint('Failed to scan qr code');
           } else {
-            final String code = barcode.raw.toString();
+            final String code = barcode.barcodes.first.displayValue.toString();
+            print(code);
             setState(() {
               inputValue = code;
               _showScanner = false;
@@ -69,12 +71,20 @@ class ReceiveScreenState extends State<ReceiveScreen> {
 
   Future<void> _startTransfer(String appOrigin) async {
     final input = inputValue.trim();
+    String filePath = '';
     if (input.isNotEmpty) {
+      String? selectDirectory = await FilePicker.platform.getDirectoryPath();
+      if (selectDirectory == null) {
+        print("User doesnt choose a directory");
+      } else {
+        print("user choose: $selectDirectory");
+        filePath = selectDirectory;
+      }
       if (Platform.isAndroid) {
         if (await _requestPermission(Permission.manageExternalStorage)) {
           try {
-            final outcome =
-                await startRustReceiver(transfername: input, relay: appOrigin);
+            final outcome = await startRustReceiver(
+                filepath: filePath, transfername: input, relay: appOrigin);
             print('Ergebnis von Rust: $outcome');
           } catch (e) {
             print('Fehler beim Starten des Receivers: $e');
@@ -93,8 +103,8 @@ class ReceiveScreenState extends State<ReceiveScreen> {
         }
       } else {
         try {
-          final outcome =
-              await startRustReceiver(transfername: input, relay: appOrigin);
+          final outcome = await startRustReceiver(
+              filepath: filePath, transfername: input, relay: appOrigin);
           print('Ergebnis von Rust: $outcome');
         } catch (e) {
           print('Fehler beim Starten des Receivers: $e');
@@ -112,7 +122,7 @@ class ReceiveScreenState extends State<ReceiveScreen> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      backgroundColor: backColor,
+      backgroundColor: Constants.backColor,
       body: Center(
           child: Column(
         mainAxisAlignment: MainAxisAlignment.center,

flutter_test_gui/lib/pages/transfer_screen.dart

@@ -58,9 +58,9 @@ class TransferScreenState extends State<TransferScreen> {
       //   } else {}
       // } else {
       try {
-        final outcome =
-            await startRustReceiver(transfername: input, relay: appOrigin);
-        print('Ergebnis von Rust: $outcome');
+        // final outcome =
+        //     await startRustReceiver(transfername: input, relay: appOrigin);
+        // print('Ergebnis von Rust: $outcome');
       } catch (e) {
         print('Fehler beim Starten des Receivers: $e');
       }

flutter_test_gui/lib/src/rust/api/simple.dart

@@ -18,6 +18,12 @@ Future<void> startRustSender(
         .startRustSender(name: name, relay: relay, files: files, hint: hint);
 
 Future<String> startRustReceiver(
-        {required String relay, required String transfername, dynamic hint}) =>
+        {required String filepath,
+        required String relay,
+        required String transfername,
+        dynamic hint}) =>
     RustLib.instance.api.startRustReceiver(
-        relay: relay, transfername: transfername, hint: hint);
+        filepath: filepath,
+        relay: relay,
+        transfername: transfername,
+        hint: hint);

flutter_test_gui/lib/src/rust/frb_generated.dart

@@ -72,7 +72,10 @@ abstract class RustLibApi extends BaseApi {
   Future<void> initApp({dynamic hint});
 
   Future<String> startRustReceiver(
-      {required String relay, required String transfername, dynamic hint});
+      {required String filepath,
+      required String relay,
+      required String transfername,
+      dynamic hint});
 
   Future<void> startRustSender(
       {required String name,
@@ -138,10 +141,14 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
 
   @override
   Future<String> startRustReceiver(
-      {required String relay, required String transfername, dynamic hint}) {
+      {required String filepath,
+      required String relay,
+      required String transfername,
+      dynamic hint}) {
     return handler.executeNormal(NormalTask(
       callFfi: (port_) {
         final serializer = SseSerializer(generalizedFrbRustBinding);
+        sse_encode_String(filepath, serializer);
         sse_encode_String(relay, serializer);
         sse_encode_String(transfername, serializer);
         pdeCallFfi(generalizedFrbRustBinding, serializer,
@@ -152,7 +159,7 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
         decodeErrorData: sse_decode_AnyhowException,
       ),
       constMeta: kStartRustReceiverConstMeta,
-      argValues: [relay, transfername],
+      argValues: [filepath, relay, transfername],
       apiImpl: this,
       hint: hint,
     ));
@@ -160,7 +167,7 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
 
   TaskConstMeta get kStartRustReceiverConstMeta => const TaskConstMeta(
         debugName: "start_rust_receiver",
-        argNames: ["relay", "transfername"],
+        argNames: ["filepath", "relay", "transfername"],
       );
 
   @override