using System;
using System.Drawing;
using System.Windows.Forms;
using System.Threading;

// The 'windowHandle' parameter will contain the window handle for the:
//   - Active window when run by hotkey
//   - Trigger target when run by a Trigger rule
//   - TitleBar Button owner when run by a TitleBar Button
//   - Jump List owner when run from a Taskbar Jump List
//   - Currently focused window if none of these match
public static class DisplayFusionFunction
{
	public static void Run(IntPtr windowHandle)
	{
		string message = "This computer will be put to sleep in 15 seconds.";
		string title = "System going to sleep in 15 seconds";
		int timeout = 15;
		
		// Run the messagebox on another thread so we can wait for it
		DialogResult result = DialogResult.OK;
		Thread t = new Thread(() => result = MessageBox.Show(message, title, MessageBoxButtons.OKCancel));
		t.ApartmentState = ApartmentState.STA;
		t.Start();
		
		// Wait for the thread to stop with a timeout
		t.Join(timeout * 1000);
		
		// If the user cancelled exit the script
		if(result != DialogResult.OK)
			return;
		
		// Find our messagebox window if it's still open and close it
		foreach(IntPtr window in BFS.Window.GetVisibleWindowHandles())
		{
			if(!BFS.Window.GetText(window).Equals(title))
				continue;
			
			BFS.Window.Close(window);
			break;
		}
		
		// Put the computer to sleep
		Application.SetSuspendState(PowerState.Suspend, false, true);
	}
}