apply method

@override Future<String> apply(String content, Map<String, dynamic> context)

Implementation

@override
Future<String> apply(String content, Map<String, dynamic> context) async {
  final match = _layoutRegex.firstMatch(content);
  if (match == null) return content;

  final layoutFile = match.group(1)!;
  final filePath = '$layoutFile.khdm.html';

  // Validate and resolve the path (throws SecurityException if invalid)
  final safePath = _pathValidator.validateAndResolve(
    filePath,
    context: 'layout',
  );

  // Check if layout file exists
  final layoutFileExists = await File(safePath).exists();
  if (!layoutFileExists) {
    throw Exception('Layout file not found: $safePath');
  }

  final layoutContent = await File(safePath).readAsString();

  // Remove the @layout directive
  final contentWithoutLayout = content.replaceFirst(_layoutRegex, '');

  // Extract sections using SectionDirective
  final sectionDirective = SectionDirective();
  final sections = sectionDirective.extractSections(contentWithoutLayout);

  // Replace all @yield('key') in layout with matching section
  final rendered = layoutContent.replaceAllMapped(_yieldRegex, (m) {
    final key = m.group(1)!;
    return sections[key] ?? '';
  });

  return rendered;
}