// Author: fruit.com.cn

import 'dart:io';
import 'dart:typed_data';

import 'package:flutter_test/flutter_test.dart';
import 'package:fruitshorts/core/data/services/download_storage.dart';

void main() {
  test('should_write_media_file_and_report_progress_when_download_completes',
      () async {
    final directory = await Directory.systemTemp.createTemp('fruit-download-');
    final server = await HttpServer.bind(InternetAddress.loopbackIPv4, 0);
    final payload = Uint8List.fromList(List<int>.generate(4096, (i) => i % 251));
    server.listen((request) async {
      request.response.headers.contentLength = payload.length;
      request.response.add(payload);
      await request.response.close();
    });
    addTearDown(() async {
      await server.close(force: true);
      await directory.delete(recursive: true);
    });
    final storage = FileDownloadStorage(directoryProvider: () async => directory);
    final progress = <double>[];

    final media = await storage.download(
      episodeId: 'ep-1',
      url: 'http://127.0.0.1:${server.port}/episode.mp4',
      onProgress: (received, total) => progress.add(total == 0 ? 0 : received / total),
    );

    expect(File(media.filePath).existsSync(), isTrue);
    expect(media.bytes, payload.length);
    expect(progress.last, 1.0);
    final localPath = await storage.localPathFor('ep-1');
    expect(localPath, isNotNull);
    expect(File(localPath!).existsSync(), isTrue);
    await storage.delete('ep-1');
    expect(await storage.localPathFor('ep-1'), isNull);
  });
}