Add project files.

Services/HardwareInforManager.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Management;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SafeBagDE70.Services
+{
+    public static class HardwareInforManager
+    {
+        public static string GetHardwareId()
+        {
+            string cpuId = GetCpuId();
+            string biosId = GetBiosId();
+            string motherboardId = GetMotherboardId();
+
+            // Combine the strings and create a hash
+            string combined = cpuId + biosId + motherboardId;
+            string hardwareId = CreateMD5Hash(combined);
+
+            return hardwareId;
+        }
+
+        public static string GetCpuId()
+        {
+            return GetHardwareInfo("Win32_Processor", "ProcessorId");
+        }
+
+        public static string GetBiosId()
+        {
+            return GetHardwareInfo("Win32_BIOS", "SerialNumber");
+        }
+
+        public static string GetMotherboardId()
+        {
+            return GetHardwareInfo("Win32_BaseBoard", "SerialNumber");
+        }
+
+        private static string GetHardwareInfo(string wmiClass, string wmiProperty)
+        {
+            try
+            {
+                ManagementObjectSearcher searcher = new ManagementObjectSearcher($"select {wmiProperty} from {wmiClass}");
+                foreach (ManagementObject obj in searcher.Get())
+                {
+                    return obj[wmiProperty]?.ToString() ?? string.Empty;
+                }
+            }
+            catch (Exception ex)
+            {
+                throw new Exception($"Failed to retrieve {wmiClass} {wmiProperty}: " + ex.Message);
+            }
+            return string.Empty;
+        }
+
+        private static string CreateMD5Hash(string input)
+        {
+            using (MD5 md5 = MD5.Create())
+            {
+                byte[] inputBytes = Encoding.ASCII.GetBytes(input);
+                byte[] hashBytes = md5.ComputeHash(inputBytes);
+                return string.Join("", hashBytes.Select(b => b.ToString("X2")));
+            }
+        }
+    }
+}

Services/PrinterManager.cs

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+using Custom.CuCustomWndAPI;
+using HandyControl.Data;
+using Serilog;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace SafeBagDE70.Services
+{
+    public  class PrinterManager
+    {
+        CuCustomWndDevice? dev = null;
+        CuCustomWndAPIWrap? customWndAPIWrap =null;
+        PrinterStatus? status = null;
+        public PrinterManager()
+        {
+            try
+            {
+                customWndAPIWrap = new CuCustomWndAPIWrap(CuCustomWndAPIWrap.CcwLogVerbosity.CCW_LOG_FATAL, null);
+                customWndAPIWrap.InitLibrary();
+                USBDevice[] usbArray = customWndAPIWrap.EnumUSBDevices();
+                dev = customWndAPIWrap.OpenPrinterUSB(usbArray[0]);
+                Log.Information("[PRINTER] Init Printer Successfully");
+            }
+            catch (Exception ex)
+            {
+               // System.Windows.MessageBox.Show(ex.ToString());
+            }
+        }
+       
+        public PrinterStatus? GetStatus()
+        {
+            var status = dev.GetPrinterFullStatus();
+            return status;
+        }
+        public bool IsNearPaperOut()
+        {
+            try
+            {
+                var status = dev.GetPrinterFullStatus();
+                return status.StsNEARENDPAP;
+            }
+            catch(Exception ex)
+            {
+                return true;
+            }
+           
+        }
+
+        public bool IsPaperOut()
+        {
+            try
+            {
+                var status = dev.GetPrinterFullStatus();
+                return status.StsNOPAPER;
+            }
+            catch (Exception ex)
+            {
+                return true;
+            }
+        }
+        public void Release()
+        {
+            if (dev != null)
+                dev.Terminate();
+        }
+    }
+}

Services/SoundManager.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Media;
+
+namespace SafeBagDE70.Services
+{
+    public static  class SoundManager
+    {
+        private static MediaPlayer _mediaPlayer = new MediaPlayer();
+        private static  Uri _audioFileUri;
+        private static bool _isWarningActive = false;
+
+        private static MediaPlayer _pressPlayer = new MediaPlayer();
+        private static Uri _audioPressFileUri;
+
+
+        static SoundManager()
+        {
+            var audioFilePath = "assets/audio/alarm.mp3";
+            _audioFileUri = new Uri(audioFilePath, UriKind.RelativeOrAbsolute);
+            _mediaPlayer.MediaEnded += MediaPlayer_MediaEnded;
+
+            var audioPressPath = "assets/audio/buttonpress.mp3";
+            _audioPressFileUri = new Uri(audioPressPath, UriKind.RelativeOrAbsolute);
+            //_pressPlayer.MediaEnded += _pressPlayer_MediaEnded; ;
+        }
+
+        private static void _pressPlayer_MediaEnded(object? sender, EventArgs e)
+        {
+           
+        }
+        public static void StartButtonPressSound()
+        {
+            _pressPlayer.Open(_audioPressFileUri);
+            _pressPlayer.Play();
+        }
+
+        // Starts the continuous playback
+        public static void StartWarningSound()
+        {
+            if (!_isWarningActive)
+            {
+                _isWarningActive = true;
+                _mediaPlayer.Open(_audioFileUri);
+                _mediaPlayer.Play();
+            }
+        }
+
+        // Stops the playback
+        public static void StopWarningSound()
+        {
+            _mediaPlayer.Stop();
+            _isWarningActive= false;
+        }
+
+        // Handles the MediaEnded event to replay the audio
+        private static void MediaPlayer_MediaEnded(object sender, EventArgs e)
+        {
+            if (_isWarningActive)
+            {
+                _mediaPlayer.Position = TimeSpan.Zero;
+                _mediaPlayer.Play();
+            }
+        }
+    }
+}

Services/WarningSoundManager.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace SafeBagDE70.Services
+{
+    internal class WarningSoundManager2
+    {
+        private static bool _isWarningActive = false;
+        private static Thread _warningSoundThread;
+
+        public static void StartWarningSound()
+        {
+            if (!_isWarningActive)
+            {
+                _isWarningActive = true;
+                _warningSoundThread = new Thread(PlayWarningSound);
+                _warningSoundThread.IsBackground = true; // Ensure the thread stops when the application exits
+                _warningSoundThread.Start();
+            }
+        }
+
+        public static void StopWarningSound()
+        {
+            _isWarningActive = false;
+        }
+
+        private static void PlayWarningSound()
+        {
+            while (_isWarningActive)
+            {
+                Console.Beep(1200, 500); // Frequency: 1200 Hz, Duration: 500 ms
+                Thread.Sleep(500); // Pause for 500 ms before repeating for 100ms
+            }
+        }
+    }
+}