class Milestone {
  final int id;
  final int projectId;
  final String title;
  final String? description;
  final String status; // active | completed | archived
  final int orderIndex;
  final int total;
  final int completed;
  final double pct;
  final DateTime createdAt;
  final DateTime updatedAt;

  const Milestone({
    required this.id,
    required this.projectId,
    required this.title,
    this.description,
    required this.status,
    required this.orderIndex,
    required this.total,
    required this.completed,
    required this.pct,
    required this.createdAt,
    required this.updatedAt,
  });

  factory Milestone.fromJson(Map<String, dynamic> json) => Milestone(
        id: json['id'] as int,
        projectId: json['project_id'] as int,
        title: json['title'] as String? ?? '',
        description: json['description'] as String?,
        status: json['status'] as String? ?? 'active',
        orderIndex: json['order_index'] as int? ?? 0,
        total: json['total'] as int? ?? 0,
        completed: json['completed'] as int? ?? 0,
        pct: (json['pct'] as num?)?.toDouble() ?? 0.0,
        createdAt: DateTime.parse(json['created_at'] as String),
        updatedAt: DateTime.parse(json['updated_at'] as String),
      );
}