desain printer

void _tesPrint(
      {Pam? pam,
      TransactionAllModel? tm,
      List<CostDetail>? result,
      int? totalPrice,
      int? fee}) async {
    //SIZE
    // 0- normal size text
    // 1- only bold text
    // 2- bold with medium text
    // 3- bold with large texts
    //ALIGN
    // 0- ESC_ALIGN_LEFT
    // 1- ESC_ALIGN_CENTER
    // 2- ESC_ALIGN_RIGHT

    bluetooth.isConnected.then((isConnected) {
      if (isConnected!) {
        if (pam != null) {
          if (pam.name != null && pam.name!.isNotEmpty) {
            bluetooth.printCustom("${pam.name}", 0, 1);
          }
          if (pam.detailAddress != null && pam.detailAddress!.isNotEmpty) {
            bluetooth.printCustom("${pam.detailAddress}", 0, 1);
          }
        }
        bluetooth.printCustom("================================", 1, 1);
        bluetooth.printCustom("Di tagihkan Kepada", 0, 1);
        if (tm != null) {
          if (tm.name != null && tm.name!.isNotEmpty) {
            bluetooth.printNewLine();
            bluetooth.printNewLine();
            bluetooth.printCustom("${tm.name}", 0, 1);
          }
          if (tm.address != null && tm.address!.isNotEmpty) {
            bluetooth.printCustom("${tm.address}", 0, 1);
          }
          if (tm.uniqueId != null && tm.uniqueId!.isNotEmpty) {
            bluetooth.printCustom("${tm.uniqueId}", 0, 1);
          }
        }
        bluetooth.printCustom("================================", 1, 1);

        bluetooth.printCustom("RINCIAN PEMAKAIAN", 0, 1);
        if (tm != null) {
          if (tm.starMeter != null && tm.starMeter!.isNotEmpty) {
            bluetooth.printLeftRight("METER AWAL", "${tm.starMeter}", 0);
          } else {
            bluetooth.printLeftRight("METER AWAL", " ", 0);
          }
          if (tm.meterLast != null && tm.meterLast!.isNotEmpty) {
            bluetooth.printLeftRight("METER AKHIR", "${tm.meterLast}", 0);
          } else {
            bluetooth.printLeftRight("METER AKHIR", " ", 0);
          }
          if (tm.meterNow != null && tm.meterNow!.isNotEmpty) {
            bluetooth.printLeftRight("VOLUME", "${tm.meterNow}", 0);
          } else {
            bluetooth.printLeftRight("VOLUME", " ", 0);
          }
        }
        bluetooth.printCustom("================================", 1, 1);
        bluetooth.printCustom("RINCIAN BIAYA", 0, 1);
        result!.map((product) {
          String qtyBrg = product.meter.toString();
          String hrgBrg = rupiah(product.cost?.toInt());
          // double subtotal = product.transactionQuantity *
          //     product.transactionSinglePrice.toDouble();
          String subtotal = rupiah(int.parse(product.total!));
          // String subtot = rupiah(subtotal.toInt());

          bluetooth.printLeftRight("$qtyBrg   x   $hrgBrg", subtotal, 1);
        }).toList();
        bluetooth.printCustom("--------------------------------", 1, 1);
        bluetooth.printLeftRight("Subtotal        Rp", "$totalPrice", 1);
        bluetooth.printLeftRight("Biaya Admi      Rp", "$fee", 1);

        bluetooth.printNewLine();
        bluetooth.printNewLine();
      }
    });
  }