Add export config to clipboard

lib/services/singbox/ffi_singbox_service.dart

@@ -5,6 +5,7 @@ import 'dart:io';
 import 'dart:isolate';
 
 import 'package:combine/combine.dart';
+import 'package:dartx/dartx.dart';
 import 'package:ffi/ffi.dart';
 import 'package:fpdart/fpdart.dart';
 import 'package:hiddify/domain/connectivity/connectivity.dart';
@@ -137,6 +138,28 @@ class FFISingboxService
     );
   }
 
+  @override
+  TaskEither<String, String> generateConfig(
+    String path,
+  ) {
+    return TaskEither(
+      () => CombineWorker().execute(
+        () {
+          final response = _box
+              .generateConfig(
+                path.toNativeUtf8().cast(),
+              )
+              .cast<Utf8>()
+              .toDartString();
+          if (response.startsWith("error")) {
+            return left(response.removePrefix("error"));
+          }
+          return right(response);
+        },
+      ),
+    );
+  }
+
   @override
   TaskEither<String, Unit> start(String configPath, bool disableMemoryLimit) {
     loggy.debug("starting, memory limit: [${!disableMemoryLimit}]");

lib/services/singbox/mobile_singbox_service.dart

@@ -73,6 +73,24 @@ class MobileSingboxService
     );
   }
 
+  @override
+  TaskEither<String, String> generateConfig(
+    String path,
+  ) {
+    return TaskEither(
+      () async {
+        final configJson = await _methodChannel.invokeMethod<String>(
+          "generate_config",
+          {"path": path},
+        );
+        if (configJson == null || configJson.isEmpty) {
+          return left("null response");
+        }
+        return right(configJson);
+      },
+    );
+  }
+
   @override
   TaskEither<String, Unit> start(String configPath, bool disableMemoryLimit) {
     return TaskEither(

lib/services/singbox/singbox_service.dart

@@ -33,6 +33,10 @@ abstract interface class SingboxService {
 
   TaskEither<String, Unit> changeConfigOptions(ConfigOptions options);
 
+  TaskEither<String, String> generateConfig(
+    String path,
+  );
+
   TaskEither<String, Unit> start(String configPath, bool disableMemoryLimit);
 
   TaskEither<String, Unit> stop();