using Mindmagma.Curses;

namespace SCI.CursesWrapper.UiElements;

public class FooterWindow : Window {
	private string leftText  = "";
	private string rightText = "";
	private string titleText = "";

	/// <summary>
	/// Class constructor
	/// </summary>
	/// <param name="screen">Root NCurses screen ID</param>
	/// <param name="defaultTitle">Initial title to show</param>
	public FooterWindow (nint screen, string defaultTitle = "") :
		base (0, CursesWrapper.GetHeight (screen) - 1, CursesWrapper.GetWidth (screen), 1)
	{
		var colorSchemeNormal = ColorSchemes.TopMenuNormal ();
		BackgroundColorId = colorSchemeNormal;
		NCurses.WindowAttributeOn (WindowId, colorSchemeNormal);

		DrawFooter (defaultTitle);
	}

	/// <summary>
	/// Draw the footer window and insert the specified text
	/// </summary>
	/// <param name="title"></param>
	/// <param name="left"></param>
	/// <param name="right"></param>
	public void DrawFooter (string? title = null, string? left = null, string? right = null) {
		Clear ();

		if (title is not null) titleText = title;
		if (left is not null)  leftText  = left;
		if (right is not null) rightText = right;

		// TODO: Describe the last-character-in-window bug(fix) here
		var pad =
			(WindowSize.Width / 2) -
			(titleText.Length / 2)
			- 1;

		var finalString =
			" " + leftText.PadRight (pad) +
			titleText +
			(string.IsNullOrEmpty (rightText)?
				"" :
				rightText.PadLeft (pad)
			);

		// String too long, leave out left and right text
		if (finalString.Length > WindowSize.Width - 1) {
			finalString = " ".PadLeft (pad) + titleText;
		}

		// String still too long, leave out the padding and left align title
		if (finalString.Length > WindowSize.Width - 1) {
			finalString = " " + titleText;
		}

		// String still too long, cut to size
		if (finalString.Length > WindowSize.Width - 1) {
			finalString = titleText.Substring (0, WindowSize.Width - 1);
		}

		try {
			NCurses.MoveWindowAddString (this, 0, 0, finalString);
			Draw ();
		} catch (Exception) {};
	}
}