load method

@override Future<void> load()

Implementation

@override
Future<void> load() async {
  logger.info('Fetching version info for $_channelRepr from $jsonIndexUrl');

  final Map<String, dynamic> raw;
  try {
    final body = await fetcher.readAsString(jsonIndexUrl);
    raw = Map<String, dynamic>.from(jsonDecode(body) as Map);
  } on FormatException catch (e) {
    throw UfbtValueError('Invalid JSON: ${e.message}');
  }

  final index = UfbtDirectoryIndex.fromJson(raw);
  if (index.channels.isEmpty) {
    throw UfbtValueError('Invalid channel: $_channelRepr');
  }

  final channelData = index.findChannel(channel.id);
  if (channelData == null) {
    throw UfbtValueError('Invalid channel: $_channelRepr');
  }
  if (channelData.versions.isEmpty) {
    throw UfbtValueError('Empty channel: $_channelRepr');
  }

  final version = channelData.versions.first;
  logger.info('Using version: ${version.version}');
  logger.debug('Changelog: ${version.changelog ?? 'None'}');
  _versionInfo = version;
}