using System;
using System.Drawing;

// In order to disable this on the target window, you have to run this script via keyboard shortcut or with the "One Click List" entry

public static class DisplayFusionFunction
{
	public static void Run(IntPtr windowHandle)
	{
		if (windowHandle == IntPtr.Zero) return;

		// Get the status of the current wintow, is already set to always on top, what is its current transparency and get a string version of the pointer to this window
		bool isWindowAlwaysOnTop = BFS.Window.GetAlwaysOnTop(windowHandle);
		decimal windowOriginalTransparency = BFS.Window.GetTransparency(windowHandle);
		string thisWindowHandleAsString = windowHandle.ToString();

		string[] ScriptSettingsValueNames = BFS.ScriptSettings.GetValueNames();
		bool indexPresent = Array.IndexOf<string>(ScriptSettingsValueNames, thisWindowHandleAsString) != -1;

		// If there are no values set to persist betwern executions of any function, or this function's windowHandleToString isn't present then write them all
		if (ScriptSettingsValueNames.Length == 0 | !indexPresent)
		{
			BFS.ScriptSettings.WriteValue(thisWindowHandleAsString, thisWindowHandleAsString);
			BFS.ScriptSettings.WriteValueBool(thisWindowHandleAsString + "-WindowAlwaysOnTop", isWindowAlwaysOnTop);
			BFS.ScriptSettings.WriteValueInt(thisWindowHandleAsString + "-WindowOriginalTransparencyInt", Convert.ToInt32(windowOriginalTransparency));
		}

		// If Window has been made Click-Through (WS_EX_LAYERED | WS_WX_TRANSPARENT) Check for the stored variables and use those 
		if (BFS.Window.HasWindowStyleEx(BFS.WindowEnum.WindowStyleEx.WS_EX_LAYERED | BFS.WindowEnum.WindowStyleEx.WS_EX_TRANSPARENT, windowHandle))
		{

			if (indexPresent)
			{
				// If present set local variables to ScriptSetting ones we made in another execution else use default values
				isWindowAlwaysOnTop = BFS.ScriptSettings.ReadValueBool(thisWindowHandleAsString + "-WindowAlwaysOnTop") | false;
				windowOriginalTransparency = Convert.ToDecimal(BFS.ScriptSettings.ReadValueInt(thisWindowHandleAsString + "WindowOriginalTransparencyInt") | 100);
				// And now that we are about to restore the window to its former state, we delete the variables we saved
				BFS.ScriptSettings.DeleteValue(thisWindowHandleAsString);
				BFS.ScriptSettings.DeleteValue(thisWindowHandleAsString + "-WindowAlwaysOnTop");
				BFS.ScriptSettings.DeleteValue(thisWindowHandleAsString + "-WindowOriginalTransparencyInt");
			}

			BFS.Window.SetTransparency(windowHandle, windowOriginalTransparency);
			BFS.Window.SetWindowStyleEx(BFS.Window.GetWindowStyleEx(windowHandle) & ~BFS.WindowEnum.WindowStyleEx.WS_EX_LAYERED & ~BFS.WindowEnum.WindowStyleEx.WS_EX_TRANSPARENT, windowHandle);
			BFS.Window.SetAlwaysOnTop(windowHandle, isWindowAlwaysOnTop);
		}
		else
		{
			// If the window is already transparent, maintain that level, else set it to 75%
			BFS.Window.SetTransparency(windowHandle, windowOriginalTransparency < 100m ? windowOriginalTransparency : 75m);
			BFS.Window.SetWindowStyleEx(BFS.Window.GetWindowStyleEx(windowHandle) | BFS.WindowEnum.WindowStyleEx.WS_EX_LAYERED | BFS.WindowEnum.WindowStyleEx.WS_EX_TRANSPARENT, windowHandle);
			BFS.Window.SetAlwaysOnTop(windowHandle, true);
		}
	}
}