import 'package:equatable/equatable.dart';

import 'language.dart';

/// Metadata associated with a certain [ClosedCaptionTrack]
class ClosedCaptionTrackInfo extends Equatable {
  /// Manifest URL of the associated track.
  final Uri url;

  /// Language of the associated track.
  final Language language;

  /// Whether the associated track was automatically generated.
  final bool isAutoGenerated;

  /// Track format
  final ClosedCaptionFormat format;

  /// Initializes an instance of [ClosedCaptionTrackInfo]
  const ClosedCaptionTrackInfo(this.url, this.language,
      {this.isAutoGenerated = false, this.format})
      : assert(format != null);

  @override
  String toString() => 'CC Track ($language)';

  @override
  List<Object> get props => [url, language, isAutoGenerated];
}

/// SubTiles format.
class ClosedCaptionFormat {
  /// .srv format(1).
  static const ClosedCaptionFormat srv1 = ClosedCaptionFormat._('srv1');

  /// .srv format(2).
  static const ClosedCaptionFormat srv2 = ClosedCaptionFormat._('srv2');

  /// .srv format(3).
  static const ClosedCaptionFormat srv3 = ClosedCaptionFormat._('srv3');

  /// .ttml format.
  static const ClosedCaptionFormat ttml = ClosedCaptionFormat._('ttml');

  /// .vtt format.
  static const ClosedCaptionFormat vtt = ClosedCaptionFormat._('vtt');

  /// List of all sub titles format.
  static const List<ClosedCaptionFormat> values = [srv1, srv2, srv3, ttml, vtt];

  /// Format code as string.
  final String formatCode;

  const ClosedCaptionFormat._(this.formatCode);
}