// 功能描述：银行卡与提现申请的严格领域模型；版本：1.0.0。

/// 本人已绑定银行卡只保留服务端返回的脱敏字段。
class WalletBank {
  const WalletBank({
    required this.identity,
    required this.maskedNumber,
    required this.bankName,
    required this.owner,
    required this.type,
    required this.isDefault,
  });

  final String identity, maskedNumber, bankName, owner, type;
  final bool isDefault;

  factory WalletBank.fromJson(Map<String, Object?> json) {
    final identity = json['identity'], number = json['card_no_masked'];
    if (identity is! String || identity.isEmpty || number is! String || number.isEmpty) {
      throw const FormatException('银行卡数据不完整');
    }
    return WalletBank(
      identity: identity,
      maskedNumber: number,
      bankName: json['bank_name'] as String? ?? '银行卡',
      owner: json['card_owner'] as String? ?? '',
      type: json['bank_type'] as String? ?? '',
      isDefault: json['is_default'] == true,
    );
  }

  String get typeName => switch (type) {
    'debit' || 'saving' => '储蓄卡',
    'credit' => '信用卡',
    _ => type,
  };
}

/// 提现状态必须来自服务端，申请成功只表示进入审核流程。
class WalletWithdrawal {
  const WalletWithdrawal({
    required this.identity,
    required this.number,
    required this.amount,
    required this.fee,
    required this.status,
    required this.createdAt,
  });

  final String identity, number;
  final int amount, fee, status;
  final DateTime createdAt;

  factory WalletWithdrawal.fromJson(Map<String, Object?> json) {
    final identity = json['identity'], amount = json['amount'], fee = json['fee'];
    final createdAt = DateTime.tryParse(json['created_at'] as String? ?? '');
    if (identity is! String ||
        identity.isEmpty ||
        amount is! int ||
        amount <= 0 ||
        fee is! int ||
        fee < 0 ||
        json['apply_status'] is! int ||
        createdAt == null) {
      throw const FormatException('提现记录数据不完整');
    }
    return WalletWithdrawal(
      identity: identity,
      number: json['cash_no'] as String? ?? '',
      amount: amount,
      fee: fee,
      status: json['apply_status'] as int,
      createdAt: createdAt.toLocal(),
    );
  }

  String get statusName => switch (status) {
    10 => '待审核',
    18 => '处理中',
    23 => '已到账',
    30 => '已拒绝',
    31 => '已退回',
    _ => '状态待确认',
  };
}

/// 金额文本直接转整数分，禁止浮点舍入和指数格式。
int? parseWithdrawalAmount(String value) {
  final text = value.trim();
  if (!RegExp(r'^\d{1,9}(\.\d{1,2})?$').hasMatch(text)) return null;
  final parts = text.split('.');
  return int.parse(parts[0]) * 100 + (parts.length == 1 ? 0 : int.parse(parts[1].padRight(2, '0')));
}