// Bridge data-transfer types deserialized from JSON pushed by the React host.
//
// The shape is normalized: groups and items are stored as maps keyed by
// ID, with groupOrder preserving display ordering.
//
// Keep in sync with `apps/web/src/lib/flutter-bridge.ts`.

class TimelineState {
  final TimelineData timeline;
  final Map<String, TimelineGroupData> groups;
  final Map<String, TimelineItemData> items;
  final List<String> groupOrder;
  final String? selectedItemId;
  final bool darkMode;

  TimelineState({
    required this.timeline,
    required this.groups,
    required this.items,
    required this.groupOrder,
    this.selectedItemId,
    this.darkMode = true,
  });

  factory TimelineState.fromJson(Map<String, dynamic> json) {
    final rawGroups = json['groups'] as Map<String, dynamic>;
    final rawItems = json['items'] as Map<String, dynamic>;

    return TimelineState(
      timeline: TimelineData.fromJson(json['timeline'] as Map<String, dynamic>),
      groups: rawGroups.map(
        (k, v) =>
            MapEntry(k, TimelineGroupData.fromJson(v as Map<String, dynamic>)),
      ),
      items: rawItems.map(
        (k, v) =>
            MapEntry(k, TimelineItemData.fromJson(v as Map<String, dynamic>)),
      ),
      groupOrder: (json['groupOrder'] as List<dynamic>).cast<String>(),
      selectedItemId: json['selectedItemId'] as String?,
      darkMode: json['darkMode'] as bool? ?? true,
    );
  }
}

class TimelineData {
  final String id;
  final String title;

  TimelineData({required this.id, required this.title});

  factory TimelineData.fromJson(Map<String, dynamic> json) {
    return TimelineData(
      id: json['id'] as String,
      title: json['title'] as String,
    );
  }
}

class TimelineGroupData {
  final String id;
  final String title;
  final int sortOrder;

  TimelineGroupData({
    required this.id,
    required this.title,
    required this.sortOrder,
  });

  factory TimelineGroupData.fromJson(Map<String, dynamic> json) {
    return TimelineGroupData(
      id: json['id'] as String,
      title: json['title'] as String,
      sortOrder: json['sortOrder'] as int,
    );
  }
}

class TimelineItemData {
  final String id;
  final String groupId;
  final String title;
  final String? description;
  final String start;
  final String? end;
  final int lane;

  TimelineItemData({
    required this.id,
    required this.groupId,
    required this.title,
    this.description,
    required this.start,
    this.end,
    required this.lane,
  });

  factory TimelineItemData.fromJson(Map<String, dynamic> json) {
    return TimelineItemData(
      id: json['id'] as String,
      groupId: json['groupId'] as String,
      title: json['title'] as String,
      description: json['description'] as String?,
      start: json['start'] as String,
      end: json['end'] as String?,
      lane: json['lane'] as int,
    );
  }
}