using System;
using System.Drawing;

// The 'windowHandle' parameter will contain the window handle for the:
//   - Active window when run by hotkey
//   - Window Location target when run by a Window Location 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
{
	const string WindowProperty_OriginalMonitor = "WindowProperty_OriginalMonitor";
	
	public static void Run(IntPtr windowHandle)
	{
		//change these variables to make this script work with your environment
		//note: the @ in front of the string literal will allow you to use the \ character without having to escape it
		string gameApplicationPath = @"[the path to the game you would like to wait for]";
		string applicationPath = @"[your application path]";
		uint monitorId = 3;
		
		//wait for the game's application to start
		while(!BFS.Application.IsAppRunningByFile(gameApplicationPath))
			BFS.General.ThreadWait(500);
		
		//search through all windows for the application we're looking for and move them to the specified monitor
		foreach(IntPtr window in BFS.Window.GetAllWindowHandles())
		{
			//ignore any DisplayFusion windows
			if(BFS.Window.GetClass(window).StartsWith("DF", StringComparison.OrdinalIgnoreCase))
				continue;
				
			//if this window doesn't belong to the specified application, ignore it
			if(!BFS.Application.GetMainFileByWindow(window).Equals(applicationPath, StringComparison.OrdinalIgnoreCase))
				continue;
			
			//set a window property on the window to save it's original monitor
			BFS.Window.SetWindowProperty(window, WindowProperty_OriginalMonitor, new IntPtr(BFS.Monitor.GetMonitorIDByWindow(window)));
			
			//move the window to the specified monitor
			BFS.Window.MoveToMonitor(monitorId, window);
		}
		
		//wait for the game to close
		BFS.Application.WaitForExitByFile(gameApplicationPath);
		
		foreach(IntPtr window in BFS.Window.GetAllWindowHandles())
		{
			//ignore any DisplayFusion windows
			if(BFS.Window.GetClass(window).StartsWith("DF", StringComparison.OrdinalIgnoreCase))
				continue;
				
			//if this isn't the monitor that we moved windows to, ignore it
			//this way we can ignore windows that were moved after the first part of the script ran
			if(BFS.Monitor.GetMonitorIDByWindow(window) != monitorId)
				continue;
				
			//try to get the saved monitor ID
			IntPtr originalMonitorId = BFS.Window.GetWindowProperty(window, WindowProperty_OriginalMonitor);
			
			//if we couldn't get a monitor ID, ignore this window
			if(originalMonitorId == IntPtr.Zero)
				continue;
				
			//move the window back to it's original monitor
			BFS.Window.MoveToMonitor((uint)originalMonitorId.ToInt64(), window);
		}
	}
}