import 'dart:typed_data';

import 'package:dio/dio.dart';
import 'package:fixnum/fixnum.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:jinzhi_flutter_app/features/ads/data/ads_api_client.dart';
import 'package:jinzhi_flutter_app/models/pb/jinzhi/v1/ads.pb.dart' as pb;

void main() {
  test(
    'Retrofit client decodes generated ad protobuf and encodes events',
    () async {
      final adapter = _AdsAdapter();
      final backend = AdsBackendApiClient(
        Dio(BaseOptions(responseType: ResponseType.bytes))
          ..httpClientAdapter = adapter,
      );
      final client = AdsApiClient(backend);

      final result = await client.getAdResult(splashAdPlacement);
      expect(result.enabled, isTrue);
      expect(result.ad?.title, '商城');
      expect(result.ad?.endAtMs, 4102444800000);

      await client.report(result.ad!, 'impression');
      final report = pb.ReportAdEventRequest.fromBuffer(adapter.lastBody!);
      expect(report.eventName, 'impression');
      expect(report.adId, 'ad-1');
    },
  );
}

class _AdsAdapter implements HttpClientAdapter {
  List<int>? lastBody;

  @override
  Future<ResponseBody> fetch(
    RequestOptions options,
    Stream<Uint8List>? requestStream,
    Future<void>? cancelFuture,
  ) async {
    if (options.path == '/api/v1/ads') {
      return ResponseBody.fromBytes(
        pb.GetAdReply(
          enabled: true,
          dailyCap: 1,
          ad: pb.AdCreative(
            adId: 'ad-1',
            placement: splashAdPlacement,
            title: '商城',
            imageUrl: 'https://cdn.example.com/ad.png',
            h5Url: 'https://example.com',
            trackedUrl: 'https://example.com',
            mediaType: pb.MediaType.MEDIA_TYPE_IMAGE,
            openMode: pb.AdOpenMode.AD_OPEN_MODE_EXTERNAL,
            endAtMs: Int64(4102444800000),
          ),
        ).writeToBuffer(),
        200,
      );
    }
    lastBody = (options.data as List<int>).toList();
    return ResponseBody.fromBytes(pb.ReportAdEventReply().writeToBuffer(), 200);
  }

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