import 'dart:async';
import 'dart:convert';

import 'package:dio/dio.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:yx_tracking_flutter/src/config/analytics_config.dart';
import 'package:yx_tracking_flutter/src/network/http_client.dart';

class _FakeAdapter implements HttpClientAdapter {
  RequestOptions? lastOptions;
  Object? lastData;

  @override
  void close({bool force = false}) {}

  @override
  Future<ResponseBody> fetch(
    RequestOptions options,
    Stream<List<int>>? requestStream,
    Future<void>? cancelFuture,
  ) async {
    lastOptions = options;
    lastData = options.data;
    return ResponseBody.fromString(
      jsonEncode(<String, Object?>{'ok': true}),
      200,
      headers: <String, List<String>>{
        Headers.contentTypeHeader: <String>[Headers.jsonContentType],
      },
    );
  }
}

AnalyticsConfig _config(String baseUrl) {
  return AnalyticsConfig(
    systemCode: 'SYS',
    endpointBaseUrl: baseUrl,
  );
}

void main() {
  group('HttpClient', () {
    test('会规范化 baseUrl 并使用自定义 adapter', () async {
      final adapter = _FakeAdapter();
      final client = HttpClient(
        _config('https://example.com/'),
        httpClientAdapter: adapter,
      );

      expect(client.dio.options.baseUrl, 'https://example.com');

      final response = await client.get<Map<String, dynamic>>('/ping');

      expect(response.statusCode, 200);
      expect(adapter.lastOptions?.path, '/ping');
    });

    test('headers 为空时不会创建 Options', () async {
      final adapter = _FakeAdapter();
      final client = HttpClient(
        _config('https://example.com'),
        httpClientAdapter: adapter,
      );

      await client.post<Object?>('/no-headers', data: <String, Object?>{});

      expect(adapter.lastOptions?.headers, isNot(contains('x-test')));
    });

    test('会把 headers 透传到请求', () async {
      final adapter = _FakeAdapter();
      final client = HttpClient(
        _config('https://example.com'),
        httpClientAdapter: adapter,
      );

      await client.post<Object?>(
        '/with-headers',
        data: <String, Object?>{'a': 1},
        headers: <String, Object?>{'x-test': '1'},
      );

      expect(adapter.lastOptions?.headers['x-test'], '1');
      expect(adapter.lastData, <String, Object?>{'a': 1});
    });
  });
}