feat: flutter ui integration

ui/flutter/lib/core/common/libgopeed_channel.dart

@@ -0,0 +1,22 @@
+import 'dart:convert';
+
+import 'package:flutter/services.dart';
+import 'package:gopeed/core/common/libgopeed_interface.dart';
+import 'package:gopeed/core/common/start_config.dart';
+
+class LibgopeedChannel implements LibgopeedInterface {
+  static const _channel = MethodChannel('gopeed.com/libgopeed');
+
+  @override
+  Future<int> start(StartConfig cfg) async {
+    final port = await _channel.invokeMethod('start', {
+      'cfg': jsonEncode(cfg),
+    });
+    return port as int;
+  }
+
+  @override
+  Future<void> stop() async {
+    return await _channel.invokeMethod('stop');
+  }
+}

ui/flutter/lib/core/common/libgopeed_ffi.dart

@@ -0,0 +1,37 @@
+import 'dart:async';
+import 'dart:convert';
+import 'dart:ffi';
+
+import 'package:ffi/ffi.dart';
+import 'package:gopeed/core/ffi/libgopeed_bind.dart';
+
+import 'libgopeed_interface.dart';
+import 'start_config.dart';
+
+class LibgopeedFFi implements LibgopeedInterface {
+  late LibgopeedBind _libgopeed;
+
+  LibgopeedFFi(LibgopeedBind libgopeed) {
+    _libgopeed = libgopeed;
+  }
+
+  @override
+  Future<int> start(StartConfig cfg) {
+    var completer = Completer<int>();
+    var result = _libgopeed.Start(jsonEncode(cfg).toNativeUtf8().cast());
+    if (result.r1 != nullptr) {
+      completer.completeError(result.r1.cast<Utf8>().toDartString());
+    } else {
+      completer.complete(result.r0);
+    }
+    return completer.future;
+  }
+
+  @override
+  Future<void> stop() {
+    var completer = Completer<void>();
+    _libgopeed.Stop();
+    completer.complete();
+    return completer.future;
+  }
+}

ui/flutter/lib/core/common/libgopeed_interface.dart

@@ -0,0 +1,7 @@
+import 'package:gopeed/core/common/start_config.dart';
+
+abstract class LibgopeedInterface {
+  Future<int> start(StartConfig cfg);
+
+  Future<void> stop();
+}

ui/flutter/lib/core/common/start_config.dart

@@ -0,0 +1,25 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'start_config.g.dart';
+
+@JsonSerializable()
+class StartConfig {
+  String network;
+  String address;
+  String storage;
+  String storageDir;
+  int refreshInterval;
+
+  StartConfig({
+    required this.network,
+    required this.address,
+    required this.storage,
+    required this.storageDir,
+    required this.refreshInterval,
+  });
+
+  factory StartConfig.fromJson(Map<String, dynamic> json) =>
+      _$StartConfigFromJson(json);
+
+  Map<String, dynamic> toJson() => _$StartConfigToJson(this);
+}

ui/flutter/lib/core/common/start_config.g.dart

@@ -0,0 +1,24 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'start_config.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+StartConfig _$StartConfigFromJson(Map<String, dynamic> json) => StartConfig(
+      network: json['network'] as String,
+      address: json['address'] as String,
+      storage: json['storage'] as String,
+      storageDir: json['storageDir'] as String,
+      refreshInterval: json['refreshInterval'] as int,
+    );
+
+Map<String, dynamic> _$StartConfigToJson(StartConfig instance) =>
+    <String, dynamic>{
+      'network': instance.network,
+      'address': instance.address,
+      'storage': instance.storage,
+      'storageDir': instance.storageDir,
+      'refreshInterval': instance.refreshInterval,
+    };