using System.Collections;
using UnityEngine;

[RequireComponent(typeof(CanvasGroup))]
public class BackToMenuButton : MonoBehaviour
{
    [Header("Появление")]
    [SerializeField] float appearSpeed = 100;
    [SerializeField] float appearDelay = 2;

    [Header("Растворение")]
    [SerializeField] float disappearSpeed = 1;
    [SerializeField] float disappearDelay = 0;

    CanvasGroup canvasGroup;
    GameManager gm;
    bool ActualState = false;
    void Start()
    {
        canvasGroup = GetComponent<CanvasGroup>();
        gm = GameManager.instance;
        ActualState = gm.moveMade;
    }

    
    void Update()
    {
        if (ActualState != gm.moveMade)
        {
            ActualState = gm.moveMade;
            StopAllCoroutines();
            StartCoroutine(changeState());
        }
    }

    IEnumerator changeState()
    {
        //actualState true значит что ход сделан и надо убрать надпись
        float speed = ActualState ? disappearSpeed : appearSpeed;
        float delay = ActualState ? disappearDelay : appearDelay;
        float targetAlpha = ActualState ? 0 : 1;

        yield return new WaitForSeconds(delay);
        while (canvasGroup.alpha != targetAlpha)
        {
            canvasGroup.alpha = Mathf.MoveTowards(canvasGroup.alpha, targetAlpha, Time.deltaTime * speed);
            yield return null;
        }
        canvasGroup.alpha = targetAlpha;
    }

}