support system wake on recording schedule

MediaBrowser.ServerApplication/Native/WindowsPowerManagement.cs

@@ -0,0 +1,40 @@
+using System;
+using System.ComponentModel;
+using System.Runtime.InteropServices;
+using System.Threading;
+using MediaBrowser.Controller.Power;
+using Microsoft.Win32.SafeHandles;
+
+namespace MediaBrowser.ServerApplication.Native
+{
+    public class WindowsPowerManagement : IPowerManagement
+    {
+        [DllImport("kernel32.dll")]
+        public static extern SafeWaitHandle CreateWaitableTimer(IntPtr lpTimerAttributes, bool bManualReset, string lpTimerName);
+
+        [DllImport("kernel32.dll", SetLastError = true)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool SetWaitableTimer(SafeWaitHandle hTimer, [In] ref long pDueTime, int lPeriod, IntPtr pfnCompletionRoutine, IntPtr lpArgToCompletionRoutine, bool fResume);
+
+        public void ScheduleWake(DateTime utcTime)
+        {
+            long duetime = utcTime.ToFileTime();
+
+            using (SafeWaitHandle handle = CreateWaitableTimer(IntPtr.Zero, true, "MyWaitabletimer"))
+            {
+                if (SetWaitableTimer(handle, ref duetime, 0, IntPtr.Zero, IntPtr.Zero, true))
+                {
+                    using (EventWaitHandle wh = new EventWaitHandle(false, EventResetMode.AutoReset))
+                    {
+                        wh.SafeWaitHandle = handle;
+                        wh.WaitOne();
+                    }
+                }
+                else
+                {
+                    throw new Win32Exception(Marshal.GetLastWin32Error());
+                }
+            }
+        }
+    }
+}