class FilamentModel {
  final String id;
  final String name;
  final String type; // PLA, ABS, PETG, etc.
  final String color;
  final double weight; // in Gramm
  final double price; // Preis
  final String? manufacturer;
  final DateTime? purchaseDate;
  final String? notes;

  FilamentModel({
    required this.id,
    required this.name,
    required this.type,
    required this.color,
    required this.weight,
    required this.price,
    this.manufacturer,
    this.purchaseDate,
    this.notes,
  });

  // JSON Serialisierung
  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'name': name,
      'type': type,
      'color': color,
      'weight': weight,
      'price': price,
      'manufacturer': manufacturer,
      'purchaseDate': purchaseDate?.toIso8601String(),
      'notes': notes,
    };
  }

  // JSON Deserialisierung
  factory FilamentModel.fromJson(Map<String, dynamic> json) {
    return FilamentModel(
      id: json['id'] as String,
      name: json['name'] as String,
      type: json['type'] as String,
      color: json['color'] as String,
      weight: (json['weight'] as num).toDouble(),
      price: (json['price'] as num).toDouble(),
      manufacturer: json['manufacturer'] as String?,
      purchaseDate: json['purchaseDate'] != null
          ? DateTime.parse(json['purchaseDate'] as String)
          : null,
      notes: json['notes'] as String?,
    );
  }

  // CopyWith für Updates
  FilamentModel copyWith({
    String? id,
    String? name,
    String? type,
    String? color,
    double? weight,
    double? price,
    String? manufacturer,
    DateTime? purchaseDate,
    String? notes,
  }) {
    return FilamentModel(
      id: id ?? this.id,
      name: name ?? this.name,
      type: type ?? this.type,
      color: color ?? this.color,
      weight: weight ?? this.weight,
      price: price ?? this.price,
      manufacturer: manufacturer ?? this.manufacturer,
      purchaseDate: purchaseDate ?? this.purchaseDate,
      notes: notes ?? this.notes,
    );
  }
}