import 'package:dio/dio.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';

import 'auth_interceptor.dart';
import 'nw_method.dart';

class DioManager {
  static final DioManager _shared = DioManager._internal();
  factory DioManager() => _shared;

  late Dio dio;
  final baseUrl = dotenv.env['SERVER_URL'] ?? "";
  DioManager._internal() {
    BaseOptions options = BaseOptions(
      baseUrl: baseUrl,
      contentType: Headers.jsonContentType,
      responseType: ResponseType.json,
      connectTimeout: const Duration(seconds: 30),
      receiveTimeout: const Duration(seconds: 30),
    );

    dio = Dio(options);

    dio.interceptors.add(AuthInterceptor());
  }

  // 请求，返回参数为 T
  // method：请求方法，NWMethod.POST等
  // path：请求地址
  // params：请求参数
  Future request<T>(
    NWMethod method,
    String path, {
    Object? params,
    Map<String, dynamic>? queryParameters,
  }) async {
    Response response = await dio.request(
      path,
      data: params,
      queryParameters: queryParameters,
      options: Options(method: nwMethodValues[method]),
    );
    return response.data;
  }
}