using System;
using System.Collections.Generic;
using UnityEngine;
using Random = UnityEngine.Random;

public class EnemySpawner : MonoBehaviour
{
    #region Statication

    public static EnemySpawner instance;

    private void Awake()
    {
        if (instance != null && instance != this)
        {
            Destroy(gameObject);
            return;
        }
        instance = this;
    }

    #endregion
    
    [Header("Enemies")]
    public bool canSpawn = true;
    public Enemy[] enemiesToSpawn;
    public List<Transform> spawnPoints;
    public float spawnRate;
    [SerializeField] private float currentSpawnTime;
    [Header("Boss")]
    public Enemy bossEnemy;
    public Transform bossSpawnPoint;
    [Header("Cache")]
    [SerializeField] private Transform enemyFolder;
    [SerializeField] private Marisa player;
    private void Update()
    {
        if (canSpawn)
        {
            currentSpawnTime -= Time.deltaTime;
            if (currentSpawnTime < 0)
            {
                currentSpawnTime = spawnRate;
                SpawnEnemy(enemiesToSpawn[Random.Range(0, enemiesToSpawn.Length)], spawnPoints[Random.Range(0, spawnPoints.Count)].position);
            }
        }
    }

    public void SpawnEnemy(Enemy enemy, Vector3 location)
    {
        Enemy newEnemy = Instantiate(enemy, location, Quaternion.identity);
        newEnemy.transform.SetParent(enemyFolder);
        newEnemy.closestTarget = player; //idk if there's actually gonna be any other target lol
    }

    public void StartBoss()
    {
        SpawnEnemy(bossEnemy, bossSpawnPoint.position);
        canSpawn = false;
    }
}