HanvonAttendanceService/MachineScope.cs

using MySql.Data.MySqlClient;
using System;
using System.Configuration;

namespace HanvonF710XAttendanceService
{
    internal static class MachineScope
    {
        public const string MachineTypeHanvon = "HANVON";

        public static string GetDeviceType()
        {
            return ConfigurationManager.AppSettings["DEVICE_TYPE"] ?? "HW_HDCP";
        }

        public static string GetDeviceUsername()
        {
            return ConfigurationManager.AppSettings["DEVICE_USERNAME"] ?? "admin";
        }

        public static string GetDevicePassword()
        {
            return ConfigurationManager.AppSettings["DEVICE_PASSWORD"] ?? "12345678";
        }

        public static bool IsHanvonMachineType(string machineType)
        {
            return !string.IsNullOrWhiteSpace(machineType)
                && string.Equals(machineType.Trim(), MachineTypeHanvon, StringComparison.OrdinalIgnoreCase);
        }

        public static string BuildMachineTypeWhereClause(MySqlCommand cmd, string columnName = "machine_type", string paramPrefix = "mt")
        {
            string p = "@" + paramPrefix;
            cmd.Parameters.AddWithValue(p, MachineTypeHanvon);
            return $"UPPER({columnName}) = {p}";
        }
    }
}