using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using EvilSatellites.Menu;
using DavyKager;

namespace EvilSatellites.Screens
{
    public class OptionsScreen : MenuScreen
    {
        public override void Activate()
        {
            MenuOptions = new MenuContainer("Options", "Set global options for the game.");
            MenuOptions.Add(new MenuEntry("Music Volume", "Toggle between music volumes"))
            .Add(new MenuEntry("Use screen reader", "Use screen reader speech instead of SAPI"))
            .Add(new MenuEntry("Back", "Go Back to previous screen"));
            base.Activate();
        }

        public override void SelectItem()
        {
            base.SelectItem();
            if (CursorPosition == 0)
            {
                ChangeVolume();
            }
            if (CursorPosition == 1)
            {
                ChangeSpeech();
            }
            if (CursorPosition == 2)
            {
                Manager.RemoveScreen(this);
                Manager.AddScreen(new MainMenuScreen());
            }
        }

        public void ChangeSpeech()
        {
            if (GameSettings.PreferSAPI)
            {
                Tolk.PreferSAPI(false);
                Tolk.TrySAPI(false);
                Tolk.Output("Prefering screen reader");
            } else
            {
                Tolk.PreferSAPI(true);
                Tolk.TrySAPI(true);
                Tolk.Output("Prefering SAPI");
            }
        }

        public void ChangeVolume()
        {
            Inputs.Update();
            if (Manager.Music.Volume > 0.9)
            {
                Manager.Music.Volume = 0f;
                return;
            }
            if (Manager.Music.Volume < 0)
            {
                Manager.Music.Volume = 1;
            }
            if (Inputs.IsPressed(Microsoft.Xna.Framework.Input.Keys.LeftShift))
            {
                Manager.Music.Volume = Manager.Music.Volume - 0.1f;
            } else
            {
                Manager.Music.Volume = Manager.Music.Volume + 0.1f;
            }

        }
    }
}