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

public class SpawnManager : MonoBehaviour
{
    [SerializeField]
    public GameObject _enemyPrefab;
    [SerializeField]
    private GameObject _enemyContainer;
    [SerializeField]
    private GameObject[] _powerups;
    [SerializeField]
    private GameObject _powerupContainer;

    private bool _stopSpawning;

    // Start is called before the first frame update
    void Start()
    {

    }

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

    }

    public void StartSpawning()
    {
        StartCoroutine(SpawnEnemyRoutine());
        StartCoroutine(SpawnPowerups());
    }

    public IEnumerator SpawnEnemyRoutine()
    {
        yield return new WaitForSeconds(3.0f);
        while (_stopSpawning == false)
        {
            GameObject newEnemy = Instantiate(_enemyPrefab, RandomizeNewPosition(), Quaternion.identity);
            newEnemy.transform.parent = _enemyContainer.transform;

            yield return new WaitForSeconds(5);
        }
    }

    private IEnumerator SpawnPowerups()
    {
        yield return new WaitForSeconds(3.0f);
        while (_stopSpawning == false)
        {
            int randomPowerup = Random.Range(0, 3);
            GameObject powerup = Instantiate(_powerups[randomPowerup], RandomizeNewPosition(), Quaternion.identity);
            powerup.transform.parent = _powerupContainer.transform;
            float randomTime = Random.Range(3f, 7f);

            yield return new WaitForSeconds(randomTime);
        }
    }

    public void OnPlayerDeath()
    {
        _stopSpawning = true;
    }

    private Vector3 RandomizeNewPosition()
    {
        float randomX = Random.Range(-9f, 9f);
        return new Vector3(randomX, 7.5f, 0);
    }
}