class AiCard {
  final String title;
  final String subtitle;
  final String? icon;

  const AiCard({required this.title, required this.subtitle, this.icon});

  factory AiCard.fromJson(Map<String, dynamic> json) => AiCard(
        title: json['title'] as String? ?? '',
        subtitle: json['subtitle'] as String? ?? '',
        icon: json['icon'] as String?,
      );
}

class AssistantNavigationAction {
  final String sectionId;
  final String sectionTitle;
  final String sectionType;

  const AssistantNavigationAction({
    required this.sectionId,
    required this.sectionTitle,
    required this.sectionType,
  });

  factory AssistantNavigationAction.fromJson(Map<String, dynamic> json) =>
      AssistantNavigationAction(
        sectionId: json['sectionId'] as String? ?? '',
        sectionTitle: json['sectionTitle'] as String? ?? '',
        sectionType: json['sectionType'] as String? ?? '',
      );
}

class AssistantResponse {
  final String reply;
  final List<AiCard>? cards;
  final AssistantNavigationAction? navigation;

  const AssistantResponse({
    required this.reply,
    this.cards,
    this.navigation,
  });

  factory AssistantResponse.fromJson(Map<String, dynamic> json) =>
      AssistantResponse(
        reply: json['reply'] as String? ?? '',
        cards: (json['cards'] as List<dynamic>?)
            ?.map((e) => AiCard.fromJson(e as Map<String, dynamic>))
            .toList(),
        navigation: json['navigation'] != null
            ? AssistantNavigationAction.fromJson(
                json['navigation'] as Map<String, dynamic>)
            : null,
      );
}