using ANSI_Fahrplan.Screens;
using ANSI_Fahrplan.UiElements;
using Mindmagma.Curses;

namespace ANSI_Fahrplan;

class Program {
    private static void Main (string [] args) {
		//Playground.Run (args);

		/**
		 * General procedure:
		 * - Draw welcome screen
		 * - User picks the view they want to see
		 * - Data is being pulled from server
		 * - Data is being read, processed and displayed in the selected view
		 * - User can scroll up and down with Up and Down the view if it is longer than one page
		 * - User can change date, room, speaker etc. by pressing left and right
		 * - User can change the list type with function keys
		 **/

		var screen = NCurses.InitScreen ();
		NCurses.SetCursor (0);
		NCurses.NoEcho ();

		var hasColors = NCurses.HasColors ();
        if (hasColors) {
			NCurses.StartColor ();
			ColorSchemes.InitAll ();
		}

		// -- Screen-wide input handler -- //
		var screenInputHandler = new InputHandler (screen);
		screenInputHandler.StartListening ();

		// -- Create menu bar -- //
		var topMenu = new TopMenu (screen, CreateMenuItems (screen, screenInputHandler));

		// -- Show introduction screen -- //
		NCurses.GetMaxYX (screen, out int height, out int width);

		var innerWindow = NCurses.NewWindow (height - 2, width - 4, 1, 2);
		NCurses.Box (innerWindow, (char) 0, (char) 0);

		//var introScreen = new IntroScreen (innerWindow);
		//introScreen.Show ();

		// Wait until the input handler routine stops
		while (true) Thread.Sleep (500);

		NCurses.EndWin ();
		Console.WriteLine ("Oh wow, the input handler crashed, that's not supposed to happen. Sorry!");
		Environment.Exit (1);
	}

	private static List<MenuItem> CreateMenuItems (nint screen, InputHandler inputHandler) {
		var helpItem      = new MenuItem ("Help", "F1", inputHandler);
		var upcomingItem  = new MenuItem ("Upcoming", "F2", inputHandler);
		var byDayItem     = new MenuItem ("By Day", "F3", inputHandler);
		var byRoomItem    = new MenuItem ("By Room", "F4", inputHandler);
		var bySpeakerItem = new MenuItem ("By Speaker", "F5", inputHandler);
		var quitItem      = new MenuItem ("Quit", "q", inputHandler);
		
		quitItem.OnItemActivated += (object? sender, EventArgs e) => {
			NCurses.EndWin ();
			Console.WriteLine ("Bye-bye!");
			Environment.Exit (0);
		};

		helpItem.OnItemActivated += (object? sender, EventArgs e) => {
			InputBox.InputCompleted callback = (string ee) => {
				NCurses.MoveAddString (3, 3, $"<{ee}>");
			};
			new InputBox().RequestInput (screen, inputHandler, callback, "Please enter some text now:");
		};

		return new List<MenuItem> {
			helpItem,
			upcomingItem,
			byDayItem,
			byRoomItem,
			bySpeakerItem,
			quitItem
		};
	}
}