exportAnnotations method

Future<void> exportAnnotations(Map<int, List<Annotation>> annotations, String filePath)

Export annotations to a custom file path

Implementation

Future<void> exportAnnotations(
  Map<int, List<Annotation>> annotations,
  String filePath,
) async {
  try {
    final file = File(filePath);

    final Map<String, dynamic> exportData = {
      'version': '1.0',
      'exported_at': DateTime.now().toIso8601String(),
      'annotations': {},
    };

    for (final entry in annotations.entries) {
      final pageNumber = entry.key.toString();
      final pageAnnotations = entry.value;

      exportData['annotations'][pageNumber] = pageAnnotations
          .map((annotation) => annotation.toJson())
          .toList();
    }

    final jsonString = jsonEncode(exportData);
    await file.writeAsString(jsonString);
  } catch (e) {
    throw Exception('Failed to export annotations: $e');
  }
}