html parse to object.dart

import 'package:html/parser.dart' as parser;
import 'package:http/http.dart' as http;

Future<Map<String, String>> _parseHtml(String htmlString, Uri url) async {
  final document = parser.parse(htmlString);

  Map<String, String> info = {};

  // Title parsing
  final titleElement = document.querySelector('title');
  info['title'] = titleElement?.text ?? '';

  // Site name parsing
  final siteNameElement = document.querySelector('meta[property="og:site_name"], meta[name="application-name"]');
  if (siteNameElement != null) {
    info['site_name'] = siteNameElement.attributes['content'] ?? '';
  } else {
    info['site_name'] = url.host;  // Use the host as the site name if no other title is found
  }

  // Description parsing
  final metaDescription = document.querySelector('meta[name="description"], meta[property="og:description"], meta[name="twitter:description"]');
  info['description'] = metaDescription?.attributes['content'] ?? '';

  // Favicon parsing
  final iconElement = document.querySelector('link[rel="icon"], link[rel="shortcut icon"], link[rel="apple-touch-icon"]');
  if (iconElement != null) {
    final href = iconElement.attributes['href'];
    if (href != null && href.isNotEmpty) {
      info['favicon'] = _resolveUrl(href, url).toString();
    }
  } else {
    // Check if favicon.ico exists in the root
    final faviconUri = url.resolve('/favicon.ico');
    final faviconExists = await _checkFaviconExists(faviconUri);
    if (faviconExists) {
      info['favicon'] = faviconUri.toString();
    }
  }

  // Thumbnail parsing
  final thumbnailElement = document.querySelector('meta[property="og:image"], meta[name="twitter:image"], meta[itemprop="image"]');
  if (thumbnailElement != null) {
    final content = thumbnailElement.attributes['content'];
    if (content != null && content.isNotEmpty) {
      info['thumbnail'] = _resolveUrl(content, url).toString();
    }
  }

  return info;
}