feat: implement per book settings with player configuration and update methods

lib/features/per_book_settings/models/book_settings.dart

@@ -0,0 +1,17 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:vaani/features/per_book_settings/models/nullable_player_settings.dart';
+
+part 'book_settings.freezed.dart';
+part 'book_settings.g.dart';
+
+/// per book settings
+@freezed
+class BookSettings with _$BookSettings {
+  const factory BookSettings({
+    required String bookId,
+    @Default(NullablePlayerSettings()) NullablePlayerSettings playerSettings,
+  }) = _BookSettings;
+
+  factory BookSettings.fromJson(Map<String, dynamic> json) =>
+      _$BookSettingsFromJson(json);
+}

lib/features/per_book_settings/models/book_settings.freezed.dart

@@ -0,0 +1,203 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'book_settings.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+T _$identity<T>(T value) => value;
+
+final _privateConstructorUsedError = UnsupportedError(
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models');
+
+BookSettings _$BookSettingsFromJson(Map<String, dynamic> json) {
+  return _BookSettings.fromJson(json);
+}
+
+/// @nodoc
+mixin _$BookSettings {
+  String get bookId => throw _privateConstructorUsedError;
+  NullablePlayerSettings get playerSettings =>
+      throw _privateConstructorUsedError;
+
+  /// Serializes this BookSettings to a JSON map.
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+
+  /// Create a copy of BookSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  $BookSettingsCopyWith<BookSettings> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $BookSettingsCopyWith<$Res> {
+  factory $BookSettingsCopyWith(
+          BookSettings value, $Res Function(BookSettings) then) =
+      _$BookSettingsCopyWithImpl<$Res, BookSettings>;
+  @useResult
+  $Res call({String bookId, NullablePlayerSettings playerSettings});
+
+  $NullablePlayerSettingsCopyWith<$Res> get playerSettings;
+}
+
+/// @nodoc
+class _$BookSettingsCopyWithImpl<$Res, $Val extends BookSettings>
+    implements $BookSettingsCopyWith<$Res> {
+  _$BookSettingsCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  /// Create a copy of BookSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? bookId = null,
+    Object? playerSettings = null,
+  }) {
+    return _then(_value.copyWith(
+      bookId: null == bookId
+          ? _value.bookId
+          : bookId // ignore: cast_nullable_to_non_nullable
+              as String,
+      playerSettings: null == playerSettings
+          ? _value.playerSettings
+          : playerSettings // ignore: cast_nullable_to_non_nullable
+              as NullablePlayerSettings,
+    ) as $Val);
+  }
+
+  /// Create a copy of BookSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @pragma('vm:prefer-inline')
+  $NullablePlayerSettingsCopyWith<$Res> get playerSettings {
+    return $NullablePlayerSettingsCopyWith<$Res>(_value.playerSettings,
+        (value) {
+      return _then(_value.copyWith(playerSettings: value) as $Val);
+    });
+  }
+}
+
+/// @nodoc
+abstract class _$$BookSettingsImplCopyWith<$Res>
+    implements $BookSettingsCopyWith<$Res> {
+  factory _$$BookSettingsImplCopyWith(
+          _$BookSettingsImpl value, $Res Function(_$BookSettingsImpl) then) =
+      __$$BookSettingsImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call({String bookId, NullablePlayerSettings playerSettings});
+
+  @override
+  $NullablePlayerSettingsCopyWith<$Res> get playerSettings;
+}
+
+/// @nodoc
+class __$$BookSettingsImplCopyWithImpl<$Res>
+    extends _$BookSettingsCopyWithImpl<$Res, _$BookSettingsImpl>
+    implements _$$BookSettingsImplCopyWith<$Res> {
+  __$$BookSettingsImplCopyWithImpl(
+      _$BookSettingsImpl _value, $Res Function(_$BookSettingsImpl) _then)
+      : super(_value, _then);
+
+  /// Create a copy of BookSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? bookId = null,
+    Object? playerSettings = null,
+  }) {
+    return _then(_$BookSettingsImpl(
+      bookId: null == bookId
+          ? _value.bookId
+          : bookId // ignore: cast_nullable_to_non_nullable
+              as String,
+      playerSettings: null == playerSettings
+          ? _value.playerSettings
+          : playerSettings // ignore: cast_nullable_to_non_nullable
+              as NullablePlayerSettings,
+    ));
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$BookSettingsImpl implements _BookSettings {
+  const _$BookSettingsImpl(
+      {required this.bookId,
+      this.playerSettings = const NullablePlayerSettings()});
+
+  factory _$BookSettingsImpl.fromJson(Map<String, dynamic> json) =>
+      _$$BookSettingsImplFromJson(json);
+
+  @override
+  final String bookId;
+  @override
+  @JsonKey()
+  final NullablePlayerSettings playerSettings;
+
+  @override
+  String toString() {
+    return 'BookSettings(bookId: $bookId, playerSettings: $playerSettings)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$BookSettingsImpl &&
+            (identical(other.bookId, bookId) || other.bookId == bookId) &&
+            (identical(other.playerSettings, playerSettings) ||
+                other.playerSettings == playerSettings));
+  }
+
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  int get hashCode => Object.hash(runtimeType, bookId, playerSettings);
+
+  /// Create a copy of BookSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$BookSettingsImplCopyWith<_$BookSettingsImpl> get copyWith =>
+      __$$BookSettingsImplCopyWithImpl<_$BookSettingsImpl>(this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$BookSettingsImplToJson(
+      this,
+    );
+  }
+}
+
+abstract class _BookSettings implements BookSettings {
+  const factory _BookSettings(
+      {required final String bookId,
+      final NullablePlayerSettings playerSettings}) = _$BookSettingsImpl;
+
+  factory _BookSettings.fromJson(Map<String, dynamic> json) =
+      _$BookSettingsImpl.fromJson;
+
+  @override
+  String get bookId;
+  @override
+  NullablePlayerSettings get playerSettings;
+
+  /// Create a copy of BookSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  _$$BookSettingsImplCopyWith<_$BookSettingsImpl> get copyWith =>
+      throw _privateConstructorUsedError;
+}

lib/features/per_book_settings/models/book_settings.g.dart

@@ -0,0 +1,22 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'book_settings.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_$BookSettingsImpl _$$BookSettingsImplFromJson(Map<String, dynamic> json) =>
+    _$BookSettingsImpl(
+      bookId: json['bookId'] as String,
+      playerSettings: json['playerSettings'] == null
+          ? const NullablePlayerSettings()
+          : NullablePlayerSettings.fromJson(
+              json['playerSettings'] as Map<String, dynamic>),
+    );
+
+Map<String, dynamic> _$$BookSettingsImplToJson(_$BookSettingsImpl instance) =>
+    <String, dynamic>{
+      'bookId': instance.bookId,
+      'playerSettings': instance.playerSettings,
+    };

lib/features/per_book_settings/models/nullable_player_settings.dart

@@ -0,0 +1,21 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:vaani/settings/models/app_settings.dart';
+
+part 'nullable_player_settings.freezed.dart';
+part 'nullable_player_settings.g.dart';
+
+@freezed
+class NullablePlayerSettings with _$NullablePlayerSettings {
+  const factory NullablePlayerSettings({
+    MinimizedPlayerSettings? miniPlayerSettings,
+    ExpandedPlayerSettings? expandedPlayerSettings,
+    double? preferredDefaultVolume,
+    double? preferredDefaultSpeed,
+    List<double>? speedOptions,
+    SleepTimerSettings? sleepTimerSettings,
+    Duration? playbackReportInterval,
+  }) = _NullablePlayerSettings;
+
+  factory NullablePlayerSettings.fromJson(Map<String, dynamic> json) =>
+      _$NullablePlayerSettingsFromJson(json);
+}

lib/features/per_book_settings/models/nullable_player_settings.freezed.dart

@@ -0,0 +1,377 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'nullable_player_settings.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+T _$identity<T>(T value) => value;
+
+final _privateConstructorUsedError = UnsupportedError(
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models');
+
+NullablePlayerSettings _$NullablePlayerSettingsFromJson(
+    Map<String, dynamic> json) {
+  return _NullablePlayerSettings.fromJson(json);
+}
+
+/// @nodoc
+mixin _$NullablePlayerSettings {
+  MinimizedPlayerSettings? get miniPlayerSettings =>
+      throw _privateConstructorUsedError;
+  ExpandedPlayerSettings? get expandedPlayerSettings =>
+      throw _privateConstructorUsedError;
+  double? get preferredDefaultVolume => throw _privateConstructorUsedError;
+  double? get preferredDefaultSpeed => throw _privateConstructorUsedError;
+  List<double>? get speedOptions => throw _privateConstructorUsedError;
+  SleepTimerSettings? get sleepTimerSettings =>
+      throw _privateConstructorUsedError;
+  Duration? get playbackReportInterval => throw _privateConstructorUsedError;
+
+  /// Serializes this NullablePlayerSettings to a JSON map.
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+
+  /// Create a copy of NullablePlayerSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  $NullablePlayerSettingsCopyWith<NullablePlayerSettings> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $NullablePlayerSettingsCopyWith<$Res> {
+  factory $NullablePlayerSettingsCopyWith(NullablePlayerSettings value,
+          $Res Function(NullablePlayerSettings) then) =
+      _$NullablePlayerSettingsCopyWithImpl<$Res, NullablePlayerSettings>;
+  @useResult
+  $Res call(
+      {MinimizedPlayerSettings? miniPlayerSettings,
+      ExpandedPlayerSettings? expandedPlayerSettings,
+      double? preferredDefaultVolume,
+      double? preferredDefaultSpeed,
+      List<double>? speedOptions,
+      SleepTimerSettings? sleepTimerSettings,
+      Duration? playbackReportInterval});
+
+  $MinimizedPlayerSettingsCopyWith<$Res>? get miniPlayerSettings;
+  $ExpandedPlayerSettingsCopyWith<$Res>? get expandedPlayerSettings;
+  $SleepTimerSettingsCopyWith<$Res>? get sleepTimerSettings;
+}
+
+/// @nodoc
+class _$NullablePlayerSettingsCopyWithImpl<$Res,
+        $Val extends NullablePlayerSettings>
+    implements $NullablePlayerSettingsCopyWith<$Res> {
+  _$NullablePlayerSettingsCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  /// Create a copy of NullablePlayerSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? miniPlayerSettings = freezed,
+    Object? expandedPlayerSettings = freezed,
+    Object? preferredDefaultVolume = freezed,
+    Object? preferredDefaultSpeed = freezed,
+    Object? speedOptions = freezed,
+    Object? sleepTimerSettings = freezed,
+    Object? playbackReportInterval = freezed,
+  }) {
+    return _then(_value.copyWith(
+      miniPlayerSettings: freezed == miniPlayerSettings
+          ? _value.miniPlayerSettings
+          : miniPlayerSettings // ignore: cast_nullable_to_non_nullable
+              as MinimizedPlayerSettings?,
+      expandedPlayerSettings: freezed == expandedPlayerSettings
+          ? _value.expandedPlayerSettings
+          : expandedPlayerSettings // ignore: cast_nullable_to_non_nullable
+              as ExpandedPlayerSettings?,
+      preferredDefaultVolume: freezed == preferredDefaultVolume
+          ? _value.preferredDefaultVolume
+          : preferredDefaultVolume // ignore: cast_nullable_to_non_nullable
+              as double?,
+      preferredDefaultSpeed: freezed == preferredDefaultSpeed
+          ? _value.preferredDefaultSpeed
+          : preferredDefaultSpeed // ignore: cast_nullable_to_non_nullable
+              as double?,
+      speedOptions: freezed == speedOptions
+          ? _value.speedOptions
+          : speedOptions // ignore: cast_nullable_to_non_nullable
+              as List<double>?,
+      sleepTimerSettings: freezed == sleepTimerSettings
+          ? _value.sleepTimerSettings
+          : sleepTimerSettings // ignore: cast_nullable_to_non_nullable
+              as SleepTimerSettings?,
+      playbackReportInterval: freezed == playbackReportInterval
+          ? _value.playbackReportInterval
+          : playbackReportInterval // ignore: cast_nullable_to_non_nullable
+              as Duration?,
+    ) as $Val);
+  }
+
+  /// Create a copy of NullablePlayerSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @pragma('vm:prefer-inline')
+  $MinimizedPlayerSettingsCopyWith<$Res>? get miniPlayerSettings {
+    if (_value.miniPlayerSettings == null) {
+      return null;
+    }
+
+    return $MinimizedPlayerSettingsCopyWith<$Res>(_value.miniPlayerSettings!,
+        (value) {
+      return _then(_value.copyWith(miniPlayerSettings: value) as $Val);
+    });
+  }
+
+  /// Create a copy of NullablePlayerSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @pragma('vm:prefer-inline')
+  $ExpandedPlayerSettingsCopyWith<$Res>? get expandedPlayerSettings {
+    if (_value.expandedPlayerSettings == null) {
+      return null;
+    }
+
+    return $ExpandedPlayerSettingsCopyWith<$Res>(_value.expandedPlayerSettings!,
+        (value) {
+      return _then(_value.copyWith(expandedPlayerSettings: value) as $Val);
+    });
+  }
+
+  /// Create a copy of NullablePlayerSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @pragma('vm:prefer-inline')
+  $SleepTimerSettingsCopyWith<$Res>? get sleepTimerSettings {
+    if (_value.sleepTimerSettings == null) {
+      return null;
+    }
+
+    return $SleepTimerSettingsCopyWith<$Res>(_value.sleepTimerSettings!,
+        (value) {
+      return _then(_value.copyWith(sleepTimerSettings: value) as $Val);
+    });
+  }
+}
+
+/// @nodoc
+abstract class _$$NullablePlayerSettingsImplCopyWith<$Res>
+    implements $NullablePlayerSettingsCopyWith<$Res> {
+  factory _$$NullablePlayerSettingsImplCopyWith(
+          _$NullablePlayerSettingsImpl value,
+          $Res Function(_$NullablePlayerSettingsImpl) then) =
+      __$$NullablePlayerSettingsImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call(
+      {MinimizedPlayerSettings? miniPlayerSettings,
+      ExpandedPlayerSettings? expandedPlayerSettings,
+      double? preferredDefaultVolume,
+      double? preferredDefaultSpeed,
+      List<double>? speedOptions,
+      SleepTimerSettings? sleepTimerSettings,
+      Duration? playbackReportInterval});
+
+  @override
+  $MinimizedPlayerSettingsCopyWith<$Res>? get miniPlayerSettings;
+  @override
+  $ExpandedPlayerSettingsCopyWith<$Res>? get expandedPlayerSettings;
+  @override
+  $SleepTimerSettingsCopyWith<$Res>? get sleepTimerSettings;
+}
+
+/// @nodoc
+class __$$NullablePlayerSettingsImplCopyWithImpl<$Res>
+    extends _$NullablePlayerSettingsCopyWithImpl<$Res,
+        _$NullablePlayerSettingsImpl>
+    implements _$$NullablePlayerSettingsImplCopyWith<$Res> {
+  __$$NullablePlayerSettingsImplCopyWithImpl(
+      _$NullablePlayerSettingsImpl _value,
+      $Res Function(_$NullablePlayerSettingsImpl) _then)
+      : super(_value, _then);
+
+  /// Create a copy of NullablePlayerSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? miniPlayerSettings = freezed,
+    Object? expandedPlayerSettings = freezed,
+    Object? preferredDefaultVolume = freezed,
+    Object? preferredDefaultSpeed = freezed,
+    Object? speedOptions = freezed,
+    Object? sleepTimerSettings = freezed,
+    Object? playbackReportInterval = freezed,
+  }) {
+    return _then(_$NullablePlayerSettingsImpl(
+      miniPlayerSettings: freezed == miniPlayerSettings
+          ? _value.miniPlayerSettings
+          : miniPlayerSettings // ignore: cast_nullable_to_non_nullable
+              as MinimizedPlayerSettings?,
+      expandedPlayerSettings: freezed == expandedPlayerSettings
+          ? _value.expandedPlayerSettings
+          : expandedPlayerSettings // ignore: cast_nullable_to_non_nullable
+              as ExpandedPlayerSettings?,
+      preferredDefaultVolume: freezed == preferredDefaultVolume
+          ? _value.preferredDefaultVolume
+          : preferredDefaultVolume // ignore: cast_nullable_to_non_nullable
+              as double?,
+      preferredDefaultSpeed: freezed == preferredDefaultSpeed
+          ? _value.preferredDefaultSpeed
+          : preferredDefaultSpeed // ignore: cast_nullable_to_non_nullable
+              as double?,
+      speedOptions: freezed == speedOptions
+          ? _value._speedOptions
+          : speedOptions // ignore: cast_nullable_to_non_nullable
+              as List<double>?,
+      sleepTimerSettings: freezed == sleepTimerSettings
+          ? _value.sleepTimerSettings
+          : sleepTimerSettings // ignore: cast_nullable_to_non_nullable
+              as SleepTimerSettings?,
+      playbackReportInterval: freezed == playbackReportInterval
+          ? _value.playbackReportInterval
+          : playbackReportInterval // ignore: cast_nullable_to_non_nullable
+              as Duration?,
+    ));
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$NullablePlayerSettingsImpl implements _NullablePlayerSettings {
+  const _$NullablePlayerSettingsImpl(
+      {this.miniPlayerSettings,
+      this.expandedPlayerSettings,
+      this.preferredDefaultVolume,
+      this.preferredDefaultSpeed,
+      final List<double>? speedOptions,
+      this.sleepTimerSettings,
+      this.playbackReportInterval})
+      : _speedOptions = speedOptions;
+
+  factory _$NullablePlayerSettingsImpl.fromJson(Map<String, dynamic> json) =>
+      _$$NullablePlayerSettingsImplFromJson(json);
+
+  @override
+  final MinimizedPlayerSettings? miniPlayerSettings;
+  @override
+  final ExpandedPlayerSettings? expandedPlayerSettings;
+  @override
+  final double? preferredDefaultVolume;
+  @override
+  final double? preferredDefaultSpeed;
+  final List<double>? _speedOptions;
+  @override
+  List<double>? get speedOptions {
+    final value = _speedOptions;
+    if (value == null) return null;
+    if (_speedOptions is EqualUnmodifiableListView) return _speedOptions;
+    // ignore: implicit_dynamic_type
+    return EqualUnmodifiableListView(value);
+  }
+
+  @override
+  final SleepTimerSettings? sleepTimerSettings;
+  @override
+  final Duration? playbackReportInterval;
+
+  @override
+  String toString() {
+    return 'NullablePlayerSettings(miniPlayerSettings: $miniPlayerSettings, expandedPlayerSettings: $expandedPlayerSettings, preferredDefaultVolume: $preferredDefaultVolume, preferredDefaultSpeed: $preferredDefaultSpeed, speedOptions: $speedOptions, sleepTimerSettings: $sleepTimerSettings, playbackReportInterval: $playbackReportInterval)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$NullablePlayerSettingsImpl &&
+            (identical(other.miniPlayerSettings, miniPlayerSettings) ||
+                other.miniPlayerSettings == miniPlayerSettings) &&
+            (identical(other.expandedPlayerSettings, expandedPlayerSettings) ||
+                other.expandedPlayerSettings == expandedPlayerSettings) &&
+            (identical(other.preferredDefaultVolume, preferredDefaultVolume) ||
+                other.preferredDefaultVolume == preferredDefaultVolume) &&
+            (identical(other.preferredDefaultSpeed, preferredDefaultSpeed) ||
+                other.preferredDefaultSpeed == preferredDefaultSpeed) &&
+            const DeepCollectionEquality()
+                .equals(other._speedOptions, _speedOptions) &&
+            (identical(other.sleepTimerSettings, sleepTimerSettings) ||
+                other.sleepTimerSettings == sleepTimerSettings) &&
+            (identical(other.playbackReportInterval, playbackReportInterval) ||
+                other.playbackReportInterval == playbackReportInterval));
+  }
+
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  int get hashCode => Object.hash(
+      runtimeType,
+      miniPlayerSettings,
+      expandedPlayerSettings,
+      preferredDefaultVolume,
+      preferredDefaultSpeed,
+      const DeepCollectionEquality().hash(_speedOptions),
+      sleepTimerSettings,
+      playbackReportInterval);
+
+  /// Create a copy of NullablePlayerSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$NullablePlayerSettingsImplCopyWith<_$NullablePlayerSettingsImpl>
+      get copyWith => __$$NullablePlayerSettingsImplCopyWithImpl<
+          _$NullablePlayerSettingsImpl>(this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$NullablePlayerSettingsImplToJson(
+      this,
+    );
+  }
+}
+
+abstract class _NullablePlayerSettings implements NullablePlayerSettings {
+  const factory _NullablePlayerSettings(
+      {final MinimizedPlayerSettings? miniPlayerSettings,
+      final ExpandedPlayerSettings? expandedPlayerSettings,
+      final double? preferredDefaultVolume,
+      final double? preferredDefaultSpeed,
+      final List<double>? speedOptions,
+      final SleepTimerSettings? sleepTimerSettings,
+      final Duration? playbackReportInterval}) = _$NullablePlayerSettingsImpl;
+
+  factory _NullablePlayerSettings.fromJson(Map<String, dynamic> json) =
+      _$NullablePlayerSettingsImpl.fromJson;
+
+  @override
+  MinimizedPlayerSettings? get miniPlayerSettings;
+  @override
+  ExpandedPlayerSettings? get expandedPlayerSettings;
+  @override
+  double? get preferredDefaultVolume;
+  @override
+  double? get preferredDefaultSpeed;
+  @override
+  List<double>? get speedOptions;
+  @override
+  SleepTimerSettings? get sleepTimerSettings;
+  @override
+  Duration? get playbackReportInterval;
+
+  /// Create a copy of NullablePlayerSettings
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  _$$NullablePlayerSettingsImplCopyWith<_$NullablePlayerSettingsImpl>
+      get copyWith => throw _privateConstructorUsedError;
+}

lib/features/per_book_settings/models/nullable_player_settings.g.dart

@@ -0,0 +1,47 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'nullable_player_settings.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_$NullablePlayerSettingsImpl _$$NullablePlayerSettingsImplFromJson(
+        Map<String, dynamic> json) =>
+    _$NullablePlayerSettingsImpl(
+      miniPlayerSettings: json['miniPlayerSettings'] == null
+          ? null
+          : MinimizedPlayerSettings.fromJson(
+              json['miniPlayerSettings'] as Map<String, dynamic>),
+      expandedPlayerSettings: json['expandedPlayerSettings'] == null
+          ? null
+          : ExpandedPlayerSettings.fromJson(
+              json['expandedPlayerSettings'] as Map<String, dynamic>),
+      preferredDefaultVolume:
+          (json['preferredDefaultVolume'] as num?)?.toDouble(),
+      preferredDefaultSpeed:
+          (json['preferredDefaultSpeed'] as num?)?.toDouble(),
+      speedOptions: (json['speedOptions'] as List<dynamic>?)
+          ?.map((e) => (e as num).toDouble())
+          .toList(),
+      sleepTimerSettings: json['sleepTimerSettings'] == null
+          ? null
+          : SleepTimerSettings.fromJson(
+              json['sleepTimerSettings'] as Map<String, dynamic>),
+      playbackReportInterval: json['playbackReportInterval'] == null
+          ? null
+          : Duration(
+              microseconds: (json['playbackReportInterval'] as num).toInt()),
+    );
+
+Map<String, dynamic> _$$NullablePlayerSettingsImplToJson(
+        _$NullablePlayerSettingsImpl instance) =>
+    <String, dynamic>{
+      'miniPlayerSettings': instance.miniPlayerSettings,
+      'expandedPlayerSettings': instance.expandedPlayerSettings,
+      'preferredDefaultVolume': instance.preferredDefaultVolume,
+      'preferredDefaultSpeed': instance.preferredDefaultSpeed,
+      'speedOptions': instance.speedOptions,
+      'sleepTimerSettings': instance.sleepTimerSettings,
+      'playbackReportInterval': instance.playbackReportInterval?.inMicroseconds,
+    };