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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Timers;
using Tango.Core.Commands;
using Tango.PPC.Common;
using Tango.PPC.Common.OS;
using Tango.Settings;
namespace Tango.PPC.Technician.ViewModels
{
public class SystemViewVM : PPCViewModel
{
private IOperationSystemManager _os;
private Timer _statsTimer;
private float _cpu;
public float CPU
{
get { return _cpu; }
set { _cpu = value; RaisePropertyChangedAuto(); }
}
private long _ram;
public long RAM
{
get { return _ram; }
set { _ram = value; RaisePropertyChangedAuto(); }
}
public RelayCommand RestartCommand { get; set; }
public RelayCommand ShutdownCommand { get; set; }
public RelayCommand FactoryResetCommand { get; set; }
public RelayCommand ExitToExplorerCommand { get; set; }
public SystemViewVM(IOperationSystemManager os)
{
_os = os;
CPU = 0;
RAM = 0;
RestartCommand = new RelayCommand(RestartSystem);
ShutdownCommand = new RelayCommand(ShutdownSystem);
FactoryResetCommand = new RelayCommand(FactoryReset);
ExitToExplorerCommand = new RelayCommand(ExitToExplorer);
}
private async void FactoryReset()
{
if (await NotificationProvider.ShowQuestion("Are you sure you want to reset this device and back to factory settings?"))
{
Settings.ApplicationState = ApplicationStates.PreSetup;
Settings.Save();
ApplicationManager.Restart();
}
}
private async void ShutdownSystem()
{
if (await NotificationProvider.ShowQuestion("Are you sure you want to shutdown the device?"))
{
_os.Shutdown();
}
}
private async void RestartSystem()
{
if (await NotificationProvider.ShowQuestion("Are you sure you want to restart the device?"))
{
_os.Restart();
}
}
private async void ExitToExplorer()
{
if (await NotificationProvider.ShowQuestion("Close the application and start OS shell?"))
{
Process.Start(new ProcessStartInfo()
{
UseShellExecute = true,
FileName = "explorer.exe",
});
ApplicationManager.ShutDown();
}
}
public override void OnApplicationStarted()
{
_statsTimer = new Timer();
_statsTimer.Interval = 2000;
_statsTimer.Elapsed += _statsTimer_Elapsed;
_statsTimer.Start();
}
private void _statsTimer_Elapsed(object sender, ElapsedEventArgs e)
{
if (IsVisible)
{
CPU = GetAppCPU();
RAM = GetAppRam();
}
}
public float GetTotalCPU()
{
PerformanceCounter cpuCounter = new PerformanceCounter();
cpuCounter.CategoryName = "Processor";
cpuCounter.CounterName = "% Processor Time";
cpuCounter.InstanceName = "_Total";
// will always start at 0
float firstValue = cpuCounter.NextValue();
System.Threading.Thread.Sleep(1000);
// now matches task manager reading
float secondValue = cpuCounter.NextValue();
return secondValue;
}
public float GetAppCPU()
{
PerformanceCounter cpuCounter = new PerformanceCounter();
cpuCounter.CategoryName = "Process";
cpuCounter.CounterName = "% Processor Time";
cpuCounter.InstanceName = Process.GetCurrentProcess().ProcessName;
// will always start at 0
float firstValue = cpuCounter.NextValue();
System.Threading.Thread.Sleep(1000);
// now matches task manager reading
float secondValue = cpuCounter.NextValue();
return secondValue / Environment.ProcessorCount;
}
public long GetAppRam()
{
Process proc = Process.GetCurrentProcess();
return proc.PrivateMemorySize64;
}
}
}
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