import 'package:flutter/painting.dart';
import 'package:flutter_cache_manager/flutter_cache_manager.dart';

/// Cache manager that attaches ComicLand CDN Referer/Origin headers.
class HeaderCacheManager extends CacheManager {
  HeaderCacheManager(this.headers)
      : super(
          Config(
            'cxyzHeaderCache',
            fileService: _HeaderHttpFileService(headers),
          ),
        );

  final Map<String, String> headers;
}

class _HeaderHttpFileService extends HttpFileService {
  _HeaderHttpFileService(this.headers);

  final Map<String, String> headers;

  @override
  Future<FileServiceResponse> get(String url, {Map<String, String>? headers}) {
    final merged = <String, String>{...this.headers, ...?headers};
    return super.get(url, headers: merged);
  }
}

ImageProvider headerNetworkImage(String url, Map<String, String> headers) {
  return NetworkImage(url, headers: headers);
}