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

public class IntroFadeController : MonoBehaviour, IPointerDownHandler {
    [SerializeField] List<TextMeshProUGUI> text;
    [SerializeField] List<Image> images;
    [SerializeField] float crossFadeTime = 1.0f;
    [SerializeField] float waitTime = 1.5f;

    [HideInInspector] bool readyToTurnOff = false;
    [HideInInspector] bool turningOff = false;
    [HideInInspector] public bool turnedOff = false;

    public void OnPointerDown(PointerEventData eventData) {
        if (readyToTurnOff && !turningOff) {
            foreach (TextMeshProUGUI tmPro in text) {
                tmPro.GetComponent<CanvasRenderer>().SetAlpha(1.0f);
                tmPro.CrossFadeAlpha(0.0f, crossFadeTime, false);
            }
            foreach (Image image in images) {
                image.GetComponent<CanvasRenderer>().SetAlpha(1.0f);
                image.CrossFadeAlpha(0.0f, crossFadeTime, false);
            }
            turningOff = true;
            StartCoroutine("DoNextWait");
        }
    }

    // Start is called before the first frame update
    void Awake()
    {
        readyToTurnOff = false;
        foreach (TextMeshProUGUI tmPro in text) {
            tmPro.GetComponent<CanvasRenderer>().SetAlpha(0.0f);
            tmPro.CrossFadeAlpha(1.0f, crossFadeTime, false);
        }
        foreach (Image image in images) {
            image.GetComponent<CanvasRenderer>().SetAlpha(0.0f);
            image.CrossFadeAlpha(1.0f, crossFadeTime, false);
        }
        StartCoroutine("DoWait");
    }

    IEnumerator DoWait() {
        yield return new WaitForSeconds(waitTime);
        readyToTurnOff = true;
    }

    IEnumerator DoNextWait() {
        yield return new WaitForSeconds(crossFadeTime);
        turnedOff = true;
    }

    // Update is called once per frame
    void Update()
    {
        
    }
}