import 'package:dio/dio.dart';
import 'package:flutter_samples/helpers/config.dart';
import 'package:flutter_samples/helpers/constants/index.dart';
import 'package:flutter_samples/helpers/dio_mock.dart';

final dio = Dio(BaseOptions(baseUrl: AppConfig.baseUrl));

class DioInterceptors extends Interceptor {
  @override
  Future onRequest(
    RequestOptions options,
    RequestInterceptorHandler handler,
  ) async {
    // TODO 处理token
    String? token = "";
    options.headers['Authorization'] = token.isNotEmpty ? 'Bearer $token' : '';
    options.headers['Content-Type'] = 'application/json';
    super.onRequest(options, handler);
  }

  @override
  void onResponse(Response response, ResponseInterceptorHandler handler) {
    super.onResponse(response, handler);
  }

  @override
  Future onError(DioException err, ErrorInterceptorHandler handler) async {
    final statusCode = err.response?.statusCode;
    switch (statusCode) {
      case 401:
        // TODO 处理token过期
        break;
      default:
    }
    super.onError(err, handler);
  }
}

class MockInterceptor extends Interceptor {
  @override
  void onRequest(RequestOptions options, RequestInterceptorHandler handler) {
    final path = options.path;
    if (mockData.containsKey(path)) {
      Future.delayed(Duration(milliseconds: 300)).then((_) {
        handler.resolve(
          Response(
            requestOptions: options,
            statusCode: 200,
            data: mockData[path],
          ),
        );
      });
    } else {
      super.onRequest(options, handler);
    }
  }
}

class DioRequest {
  static Future post(String url, Map<String, dynamic> params) async {
    dio.interceptors.add(DioInterceptors());
    if (isMockRequest) {
      dio.interceptors.add(MockInterceptor());
    }
    return await dio.post(url, data: params);
  }
}