using System;
using System.Drawing;
using System.Collections.Generic;
using System.Runtime.InteropServices;

// 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
{
	public static void Run(IntPtr windowHandle)
	{
		//find the appid of the focused window
		uint focusedAppId = BFS.Application.GetAppIDByWindow(windowHandle);
		
		//Avoiding problems if GetMonitorCountEnabledNoSplits returns a negative value
		if (BFS.Monitor.GetMonitorCountEnabledNoSplits() >= 0)
		{
            uint numberOfMonitors = (uint)BFS.Monitor.GetMonitorCountEnabledNoSplits();
            
            //The monitor where the window which invoked the operation is located
            uint invokingWindowMonitor = BFS.Monitor.GetMonitorIDByWindow(windowHandle);
            
            //The monitor which is next of invokingWindowMonitor
            uint nextMonitor = invokingWindowMonitor + 1;
            if (nextMonitor > numberOfMonitors)
            {
                nextMonitor = 1;
            }
            
            //loop through all visible windows.
            foreach(IntPtr window in BFS.Window.GetAllWindowHandles())
            {
                //if the window belongs to that appid, move it to the next monitor
                if(BFS.Application.GetAppIDByWindow(window) == focusedAppId)
                {
                    if (BFS.Monitor.GetMonitorIDByWindow(window) != nextMonitor)
                    {
                        BFS.Window.MoveToMonitor(nextMonitor, window);
                    }
                }

            }
        }
	}
}