ReleaseManifest.fromJson constructor

ReleaseManifest.fromJson(Map<String, Object?> json)

Implementation

factory ReleaseManifest.fromJson(Map<String, Object?> json) {
  var releaseStr = json['release'] as String?;
  var nameStr = json['name'] as String?;
  var versionStr = json['version'] as String?;
  var platformStr = json['platform'] as String?;
  var dateStr = json['date'] as String?;
  var filesMap = json['files'] as Map<String, dynamic>;

  Release release;

  if (releaseStr != null) {
    release = Release.parse(releaseStr);

    nameStr ??= release.name;
    versionStr ??= release.version.toString();
    platformStr ??= release.platform;
  } else {
    releaseStr = '${nameStr!}/${versionStr!}';
    if (platformStr != null) {
      releaseStr += '/$platformStr';
    }

    release = Release.parse(releaseStr);
  }

  if (nameStr != release.name) {
    throw ArgumentError('Invalid JSON. Wrong name and release.name');
  }

  if (versionStr != release.version.toString()) {
    throw ArgumentError('Invalid JSON. Wrong version and release.version');
  }

  if (platformStr != release.platform) {
    throw ArgumentError('Invalid JSON. Wrong platform and release.platform');
  }

  var date = dateStr != null ? DateTime.tryParse(dateStr) : null;

  var files = filesMap.entries.map((e) => ReleaseManifestFile.fromSha256Hex(
      e.key, e.value['length'], e.value['sha256']));

  return ReleaseManifest(release, date: date, files: files);
}