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

public class WaveUI : MonoBehaviour
{
    [SerializeField] private EnemySpawner spawner;
    [SerializeField] private Slider slider;
    [SerializeField] private TMP_Text waveText;
    [SerializeField] private float waveTextDisplayTime = 3f;

    private void Start()
    {
        waveText.gameObject.SetActive(false);
    }

    int prevWave = 0;
    private void Update()
    {
        float waveProgressTime = spawner.timer / spawner.WaveTime;
        slider.value = waveProgressTime;

        if (prevWave != spawner.Wave)
        {
            prevWave = spawner.Wave;
            StartCoroutine(ShowWave());
        }    
    }

    IEnumerator ShowWave()
    {
        waveText.gameObject.SetActive(true);
        waveText.text = $"Wave: {spawner.Wave}";

        yield return new WaitForSecondsRealtime(waveTextDisplayTime);

        waveText.gameObject.SetActive(false);
    }
}