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

public class UIManager : MonoBehaviour
{
    [SerializeField]
    private Text _scoreText;
    [SerializeField]
    private Sprite[] _liveSprites;
    [SerializeField]
    private Image _livesImage;
    [SerializeField]
    private Text _gameOverText;
    [SerializeField]
    private Text _gameRestartText;
    [SerializeField]
    private GameManager _gameManager;

    // Start is called before the first frame update
    void Start()
    {
        _scoreText.text = "Score: " + 0;
        _gameOverText.gameObject.SetActive(false);
        _gameRestartText.gameObject.SetActive(false);

        if (_gameManager == null)
        {
            Debug.LogError("GameManager is NULL.");
        }
    }

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

    }

    public void UpdateScore(int score)
    {
        _scoreText.text = "Score: " + score;
    }

    public void UpdateLives(int currentLives)
    {
        _livesImage.sprite = _liveSprites[currentLives];

        if (currentLives == 0)
        {
            showGameOverScreen();
        }
    }

    private void showGameOverScreen()
    {
        _gameRestartText.gameObject.SetActive(true);
        StartCoroutine(flickerGameOverText());
        _gameManager.GameOver();
    }

    private IEnumerator flickerGameOverText()
    {
        while (true)
        {
            _gameOverText.gameObject.SetActive(true);
            yield return new WaitForSeconds(0.3f);
            _gameOverText.gameObject.SetActive(false);
            yield return new WaitForSeconds(0.3f);
        }
    }
}