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)
	{
		//get the monitor of the window where the script was run
		uint monitor = BFS.Monitor.GetMonitorIDByWindow(windowHandle);
		
		//store the windows to be moved here
		List<IntPtr> windows = new List<IntPtr>();
		
		//a fix for chrome windows
		Dictionary<string, int> chromeWindowTitlesAdded = new Dictionary<string, int>();
		
		//loop through all visible windows on the monitor
		foreach(IntPtr window in BFS.Window.GetVisibleWindowHandlesByMonitor(monitor))
		{
			//ignore DisplayFusion windows (titlebar buttons, etc)
			if(BFS.Window.GetClass(window).IndexOf("DF", StringComparison.Ordinal) == 0)
				continue;
				
			//check to see if this is a chrome window
			if(BFS.Application.GetMainFileByWindow(window).EndsWith("chrome.exe", StringComparison.OrdinalIgnoreCase))
			{
				//if the chrome windows have the same window text, it is just a tab
				string text = BFS.Window.GetText(window);
				if(chromeWindowTitlesAdded.ContainsKey(text))
					continue;
				else
					chromeWindowTitlesAdded.Add(text, 0);
			}
				
			//add the window to the list to be moved
			windows.Add(window);
			
			//if we found 4 windows, exit the loop
			if(windows.Count == 4)
				break;
		}
		
		//get the work area of the monitor
		Rectangle bounds = BFS.Monitor.GetMonitorWorkAreaByID(monitor);
		
		//position the windows with full width and quarter height, stacked on top of one another
		int quarter = bounds.Height / 4;
		for(int i = 0; i < windows.Count; i++)
			BFS.Window.SetSizeAndLocation(windows[i], bounds.X, quarter * i, bounds.Width, quarter);
	}
}