ReadiumTimebasedState.fromJson constructor

ReadiumTimebasedState.fromJson(Map<String, dynamic> map)

Implementation

factory ReadiumTimebasedState.fromJson(final Map<String, dynamic> map) {
  final jsonObject = Map<String, dynamic>.of(map);

  final state = TimebasedState.fromString(
    jsonObject.optString('state', remove: true),
  );

  final currentOffset = jsonObject.optNullableInt(
    'currentOffset',
    remove: true,
  );
  final currentBuffered = jsonObject.optNullableInt(
    'currentBuffered',
    remove: true,
  );
  final currentDuration = jsonObject.optNullableInt(
    'currentDuration',
    remove: true,
  );
  final totalProgressDuration = jsonObject.optNullableInt(
    'totalProgressDuration',
    remove: true,
  );
  final totalDuration = jsonObject.optNullableInt(
    'totalDuration',
    remove: true,
  );

  var currentLocator = Locator.fromJsonDynamic(
    jsonObject.opt('currentLocator', remove: true),
  );

  if (state == TimebasedState.ended && currentLocator != null) {
    // Workaround rounding error from native layer.
    // Sometimes progression and totalProgression are very close to 1.0 but not exactly, which causes confusion for
    // the UI.
    currentLocator = currentLocator.copyWithLocations(
      progression:
          currentLocator.locations?.progression?.roundToIfCloseTo(
            1.0,
            epsilon: 0.01,
          ) ??
          1.0,
      totalProgression: currentLocator.locations?.totalProgression?.roundToIfCloseTo(1.0) ?? 1.0,
    );
  }

  return ReadiumTimebasedState(
    state: state,
    currentOffset: currentOffset != null ? Duration(milliseconds: currentOffset) : null,
    currentBuffered: currentBuffered != null ? Duration(milliseconds: currentBuffered) : null,
    currentDuration: currentDuration != null ? Duration(milliseconds: currentDuration) : null,
    totalProgressDuration: totalProgressDuration != null ? Duration(milliseconds: totalProgressDuration) : null,
    totalDuration: totalDuration != null ? Duration(milliseconds: totalDuration) : null,
    currentLocator: currentLocator,
  );
}