library fis_jsonrpc;

import 'dart:collection';

import 'package:fis_common/extensions/type.dart';

import 'client_base.dart';
import 'interceptor.dart';
import 'services/index.dart';

export 'services/index.dart';
export 'request.dart';
export 'exception.dart';
export 'interceptor.dart';
export 'listener/listener.dart';

typedef T ServiceBuilder<T extends JsonRpcClientBase>();

/// 默认地址标识
const String _defaultAddressSign = "FLYINSONO";

/// JSON-RPC 代理
class JsonRpcProxy {
  JsonRpcProxy({
    this.defaultServerHost = "cloud.fis.plus",
    this.platformHost = "platform.fis.plus",
  }) {
    _currentHost = this.defaultServerHost;
  }

  /// 默认主机地址
  final String defaultServerHost;

  /// 宿主平台代理地址
  final String platformHost;

  late String _currentHost;

  /// 当前服务主机地址
  String get currentHostAddress => "http://$_currentHost";

  String get defaultAddressSign => _defaultAddressSign;

  HashMap<Type, dynamic> _serviceCache = HashMap();

  static PlatformService? _platformService;

  /* 服务代理设置 Start */

  /// 平台服务
  PlatformService get platform {
    if (_platformService == null)
      _platformService = PlatformService("http://$platformHost");
    return _platformService!;
  }
*******Separator******
    /* 服务代理设置 End */

  /// 设置服务主机地址
  void setServerHost(String address) {
    if (address == _defaultAddressSign) {
      address = defaultServerHost;
    }
    _currentHost = address;
  }
  
  /// 添加拦截器
  void addInterceptor(JsonRpcInterceptor interceptor) =>
      jsonRpcInterceptHost.addInterceptor(interceptor);

  /// 清空缓存
  void clearCache() => _serviceCache.clear();

  /// 查找Service实例
  T findService<T extends JsonRpcClientBase>(ServiceBuilder<T> builder) {
    Type serviceType = typeOf<T>();
    if (!_serviceCache.containsKey(serviceType)) {
      _serviceCache[serviceType] = builder.call();
    }
    return _serviceCache[serviceType] as T;
  }
}