using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

public class RulesEffect : MonoBehaviour, IEffect
{
    [SerializeField] List<Graphic> cards;
    [SerializeField] AudioClip cardAppearClip;
    [SerializeField] Graphic label;

    public float delayBetweenCards = 0.5f;
    public float appearDuration = 1f;
    public float cardStandTime = 2f;
    public float disappearDuration = 1f;
    
    

    public void Play()
    {
        //карточки
        for (int i = 0; i < cards.Count; i++)
        {
            StartCoroutine(ShowGraphic(graphic: cards[i],
                                       delay: delayBetweenCards * i,
                                       appearDuration: appearDuration,
                                       standTime: cardStandTime,
                                       disappearDuration: disappearDuration));
        }

        //текст 4.5 сек всего
        StartCoroutine(ShowGraphic(graphic: label,
                                       delay: 0,
                                       appearDuration: appearDuration,
                                       standTime: cardStandTime,
                                       disappearDuration: disappearDuration));

    }

    IEnumerator ShowGraphic(Graphic graphic, float delay, float appearDuration, float standTime, float disappearDuration)
    {
        if (graphic == null) yield break;
        yield return new WaitForSeconds(delay);
        graphic.gameObject.SetActive(true);
        Color c = graphic.color;

        float startAlpha = 0;
        float targetAlpha = 1;
        float t = 0;

        while (t != 1)
        {
            c.a = Mathf.Lerp(startAlpha, targetAlpha, t);
            graphic.color = c;

            t = Mathf.Clamp01(t + Time.deltaTime / appearDuration);
            yield return null;
        }

        yield return new WaitForSeconds(standTime);



        startAlpha = 1;
        targetAlpha = 0;
        t = 0;

        while (t != 1)
        {
            c.a = Mathf.Lerp(startAlpha, targetAlpha, t);
            graphic.color = c;

            t = Mathf.Clamp01(t + Time.deltaTime / disappearDuration);
            yield return null;
        }



        graphic.gameObject.SetActive(false);
    }



}