package dao

import (
	"errors"
	"git.rosy.net.cn/jx-callback/business/model"
)

// DeductionPrintBalance 扣除打印机账号余额
/*func DeductionPrintBalance(db *DaoDB, printNo string) error {
	_, err := ExecuteSQL(db, `UPDATE print_bill SET print_balance = print_balance -1 WHERE print_no = ?`, []interface{}{printNo}...)
	return err
}*/

// DeductionPrintBalance 扣除打印机账号余额
func DeductionPrintBalance(db *DaoDB, printNo string) error {
	var data *model.PrintBill
	if err := GetRow(db, &data, `SELECT * FROM print_bill WHERE print_no = ?`, []interface{}{printNo}...); err != nil {
		return err
	}

	if data == nil {
		return errors.New("数据异常")
	}

	data.PrintBalance -= 1
	_, err := UpdateEntity(db, data, "print_balance")
	return err
}