using System;
using System.Drawing;
using System.Collections.Generic;

// 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)
	{
		//a dictionary type to store the window handle and an approximate time
		Dictionary<IntPtr, int> watchedWindows = new Dictionary<IntPtr, int>();
		while(true)
		{
			//store the currently focused window
			IntPtr focusedWindow = BFS.Window.GetFocusedWindow();
			
			//if the focused window is in the watched windows, reset the timer
			if(watchedWindows.ContainsKey(focusedWindow))
				watchedWindows[focusedWindow] = 0;
			
			//get a list of all of the visible window handles
			List<IntPtr> windows = new List<IntPtr>(BFS.Window.GetVisibleWindowHandles());
			
			//loop though all of the visible windows
			foreach(IntPtr window in windows)
			{			
				//check if this window is already rolled up
				if(BFS.Window.IsWindowRolledUpToTitleBar(window))
					continue;
				
				//if this is a new window, add it to the list and continue
				if(!watchedWindows.ContainsKey(window))
				{
					watchedWindows.Add(window, 0);
					continue;
				}
				
				//increment the time by 1
				watchedWindows[window]++;
				
				//if the time is greater or equal to 30, roll up the window and remove it from the list
				if(watchedWindows[window] >= 30)
				{
					BFS.Window.RollupWindowToTitleBar(window);
					watchedWindows.Remove(window);
				}
			}
			
			//make a list to store windows that have been closed/minimized
			List<IntPtr> windowsToRemove = new List<IntPtr>();
			
			//look for windows that aren't visible anymore
			foreach(IntPtr key in watchedWindows.Keys)
			{
				//sequencial lookup, but the list size shouldn't ever be very big (>500)
				if(!windows.Contains(key))
					windowsToRemove.Add(key);
			}
			
			foreach(IntPtr window in windowsToRemove)
				watchedWindows.Remove(window);
			
			//pause for one second
			BFS.General.Sleep(1000);
		}
	}
}