import 'package:http_interceptor/http_interceptor.dart';
import 'package:js_packer/js_packer.dart';
import 'package:mangayomi/models/video.dart';
import 'package:mangayomi/services/http/m_client.dart';
import 'package:mangayomi/utils/extensions/string_extensions.dart';
import 'package:mangayomi/utils/xpath_selector.dart';

class Mp4uploadExtractor {
  static final RegExp qualityRegex = RegExp(r'\WHEIGHT=(\d+)');
  static const String referer = "https://mp4upload.com/";
  final InterceptedClient client = MClient.init(reqcopyWith: {'useDartHttpClient': true});
  Future<List<Video>> videosFromUrl(String url, Map<String, String> headers,
      {String prefix = '', String suffix = ''}) async {
    final newHeaders = Map<String, String>.from(headers)..addAll({'referer': referer});
    try {
      final response = await client.get(Uri.parse(url), headers: newHeaders);
      String script = "";

      final scriptElementWithEval = xpathSelector(response.body)
          .queryXPath('//script[contains(text(), "eval") and contains(text(), "p,a,c,k,e,d")]/text()')
          .attrs;

      if (scriptElementWithEval.isNotEmpty) {
        script = JSPacker(script).unpack() ?? "";
      } else {
        final scriptElementWithSrc =
            xpathSelector(response.body).queryXPath('//script[contains(text(), "player.src")]/text()').attrs;
        if (scriptElementWithSrc.isNotEmpty) {
          script = scriptElementWithSrc.first!;
        } else {
          return [];
        }
      }

      final videoUrl = script
          .substringAfter('.src(')
          .substringBefore(')')
          .substringAfter('src:')
          .substringAfter('"')
          .substringBefore('"');
      final resolutionMatch = qualityRegex.firstMatch(script);
      final resolution = resolutionMatch?.group(1) ?? 'Unknown resolution';
      final quality = '$prefix Mp4Upload - ${resolution}p $suffix';

      return [
        Video(videoUrl, quality, videoUrl, headers: newHeaders),
      ];
    } catch (_) {
      return [];
    }
  }
}