using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class HighlightAndBehaviour : MonoBehaviour
{

    [SerializeField] Choice currentChoice;

    [SerializeField] Sprite startNormal, startHover, startPressed;
    [SerializeField] Sprite creditsNormal, creditsHover, creditsPressed;
    [SerializeField] Sprite exitNormal, exitHover, exitPressed;
    [SerializeField] SpriteRenderer startSR, creditsSR, exitSR;


    void Start()
    {
        StartCoroutine(StartChoice());
    }


    IEnumerator StartChoice()
    {
        while(currentChoice == Choice.Start)
        {
            startSR.sprite = startHover;
            if(Input.GetKeyDown(KeyCode.Return))
            {
                startSR.sprite = startPressed;
                // MOVE TO SCENE HERE
                currentChoice = Choice.Null;
            }
            if(Input.GetKeyDown(KeyCode.DownArrow))
            {
                startSR.sprite = startNormal;
                currentChoice = Choice.Credits;
                StartCoroutine(CreditsChoice());
            }

            yield return null;
        }
    }
    IEnumerator CreditsChoice()
    {
        while (currentChoice == Choice.Credits)
        {
            creditsSR.sprite = creditsHover;
            if (Input.GetKeyDown(KeyCode.Return))
            {
                creditsSR.sprite = creditsPressed;
                // MOVE TO CREDITS HERE
                currentChoice = Choice.Null;
            }
            if (Input.GetKeyDown(KeyCode.DownArrow))
            {
                creditsSR.sprite = creditsNormal;
                currentChoice = Choice.Exit;
                StartCoroutine(ExitChoice());
            }
            if (Input.GetKeyDown(KeyCode.UpArrow))
            {
                creditsSR.sprite = creditsNormal;
                currentChoice = Choice.Start;
                StartCoroutine(StartChoice());
            }

            yield return null;
        }
    }
    IEnumerator ExitChoice()
    {
        while (currentChoice == Choice.Exit)
        {
            exitSR.sprite = exitHover;
            if (Input.GetKeyDown(KeyCode.Return))
            {
                exitSR.sprite = exitPressed;
                // EXIT GAME HERE
                currentChoice = Choice.Null;
            }
            if (Input.GetKeyDown(KeyCode.UpArrow))
            {
                exitSR.sprite = exitNormal;
                currentChoice = Choice.Credits;
                StartCoroutine(CreditsChoice());
            }
            yield return null;
        }
    }


}


public enum Choice
{
    Start,
    Credits,
    Exit,
    Null
}