load method

Implementation

@override
Map<String, dynamic> load() {
  try {
    // Read file contents
    final file = File(filePath);
    if (!file.existsSync()) {
      throw ConfigurationException('Configuration file not found: $filePath');
    }

    final contents = file.readAsStringSync();
    if (contents.trim().isEmpty) {
      return <String, dynamic>{};
    }

    // parse JSON

    final dynamic parsed = jsonDecode(contents);

    if (parsed is! Map<String, dynamic>) {
      throw ConfigurationException('Configuration file must contain a JSON object: $filePath');
    }

    return parsed;
  }
  on FileSystemException catch (e) {
    throw ConfigurationException('Failed to read configuration file: $filePath', e);
  }
  on FormatException catch (e) {
    throw ConfigurationException('Invalid JSON in configuration file: $filePath', e);
  }
  catch (e) {
    throw ConfigurationException('Unexpected error loading configuration: $filePath', e as Exception?);
  }
}