class Partner {
  final int id;
  final String? code;
  final String name;
  final String type; // supplier | customer | supplier,customer(两者)
  final String? contact;
  final String? phone;
  final String? address;
  final String? bankAccount;
  final double balance; // 期初余额（存档字段，不参与应收应付聚合）
  final String status;
  final String? remark;

  const Partner({
    required this.id,
    this.code,
    required this.name,
    required this.type,
    this.contact,
    this.phone,
    this.address,
    this.bankAccount,
    this.balance = 0,
    this.status = 'enabled',
    this.remark,
  });

  /// 类型徽章文案（原型 b-供应商/b-客户/b-两者）：SET 双值 = 两者
  String get typeLabel {
    final isSupplier = type.contains('supplier');
    final isCustomer = type.contains('customer');
    if (isSupplier && isCustomer) return '两者';
    return isCustomer ? '客户' : '供应商';
  }

  factory Partner.fromJson(Map<String, dynamic> json) => Partner(
        id: (json['id'] as num).toInt(),
        code: json['code'] as String?,
        name: json['name'] as String,
        type: json['type'] as String,
        contact: json['contact'] as String?,
        phone: json['phone'] as String?,
        address: json['address'] as String?,
        bankAccount: json['bank_account'] as String?,
        balance: (json['balance'] as num?)?.toDouble() ?? 0,
        status: json['status'] as String? ?? 'enabled',
        remark: json['remark'] as String?,
      );

  Map<String, dynamic> toJson() => {
        'name': name,
        'type': type,
        if (code != null) 'code': code,
        if (contact != null) 'contact': contact,
        if (phone != null) 'phone': phone,
        if (address != null) 'address': address,
        if (bankAccount != null) 'bank_account': bankAccount,
        if (remark != null) 'remark': remark,
      };
}