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

public class SpawnManager : MonoBehaviour
{

    [SerializeField] private GameObject _enemyPrefab;
    [SerializeField] private GameObject _bigEnemyPrefab;
    [SerializeField] private GameObject _enemyContainer;
    [SerializeField] private GameObject _wave2Enemy;
    [SerializeField] private GameObject _wave2EnemyFacingRight;

    [SerializeField] private float _waitTime = 3f;
    [SerializeField] private float _wave2WaitTime = 6f;
    [SerializeField] private float _wave2WaitTime2 = 6f;
    [SerializeField] private float _bigEnemyWaitTime = 6f;

    [SerializeField] private List<GameObject> _enemySpawns = new List<GameObject>();
    [SerializeField] private List<GameObject> _bigEnemySpawns = new List<GameObject>();

    [SerializeField] private GameObject[] _powerUps;

    [SerializeField] private bool _stopSpawningOnPlayerDeath;
    [SerializeField] private bool _stopSpawning;

    public void StartSpawn()
    {
        StartCoroutine(SpawnEnemyRoutine());
        StartCoroutine(SpawnPowerUpRoutine());
        StartCoroutine(SpawnBigEnemy());
    }

    public void SubtractFromEnemyList()
    {
        _enemySpawns.Remove(_enemyPrefab);

        if (_enemySpawns.Count == 0 && _bigEnemySpawns.Count == 0)
        {
            _stopSpawning = true;
            StartCoroutine(StartSecondWaveRtoL());
            StartCoroutine(StartSecondWaveLtoRight());
        }
    }

    public void SubtractFromBigEnemyList()
    {
        _bigEnemySpawns.Remove(_bigEnemyPrefab);
    }

    public void AddToEnemyList()
    {
        _enemySpawns.Add(_enemyPrefab);
    }
    public void AddToBigEnemyList()
    {
        _enemySpawns.Add(_bigEnemyPrefab);
    }

    IEnumerator SpawnEnemyRoutine()
    {
        yield return new WaitForSeconds(3.0f);
        while (_stopSpawningOnPlayerDeath == false && _stopSpawning == false)
        {
            Vector3 spawnPosRando = new Vector3(Random.Range(-9.21f, 9.21f), 12f, 0);
            GameObject newEnemy = Instantiate(_enemyPrefab, spawnPosRando, Quaternion.identity);
            newEnemy.transform.parent = _enemyContainer.transform;

            yield return new WaitForSeconds(_waitTime);
        }
    }

    IEnumerator SpawnBigEnemy()
    {
        yield return new WaitForSeconds(10f);

        while (_stopSpawningOnPlayerDeath == false && _stopSpawning == false)
        {
            Vector3 spawnPosRandom = new Vector3(Random.Range(9.21f, -9.21f), 12f, 0);
            GameObject newBigEnemy = Instantiate(_bigEnemyPrefab, spawnPosRandom, Quaternion.identity);
            newBigEnemy.transform.parent = _enemyContainer.transform;

            yield return new WaitForSeconds(_bigEnemyWaitTime);
        }
    }

    IEnumerator SpawnPowerUpRoutine()
    {
        yield return new WaitForSeconds(3.0f);
        while (_stopSpawningOnPlayerDeath == false && _stopSpawning == false)
        {
            Vector3 spawnPosRando = new Vector3(Random.Range(-9.21f, 9.21f), 12f, 0);
            int randompowerUpSpawn = Random.Range(0, 7);
            Instantiate(_powerUps[randompowerUpSpawn], spawnPosRando, Quaternion.identity);

            yield return new WaitForSeconds(Random.Range(3f, 10f));
        }
    }


    //*************Start Second Wave / Restart Courutine PowerUps*************//

    IEnumerator StartSecondWaveRtoL()
    {
        yield return new WaitForSeconds(6f);

        _stopSpawning = false;

        yield return new WaitForSeconds(3f);

        StartCoroutine(SpawnPowerUpRoutine()); //*************restarting the powerUp Coroutine***********//

        while (_stopSpawningOnPlayerDeath == false && _stopSpawning == false)
        {
            Vector3 randomXPos = new Vector3(12f, Random.Range(-0.52f, 4.80f), 0);
            GameObject newEnemy = Instantiate(_wave2Enemy, randomXPos, Quaternion.identity);
            newEnemy.transform.parent = _enemyContainer.transform;

            yield return new WaitForSeconds(_wave2WaitTime);
        }
    }

    IEnumerator StartSecondWaveLtoRight()
    {
        yield return new WaitForSeconds(10f);

        while (_stopSpawningOnPlayerDeath == false && _stopSpawning == false)
        {
            Vector3 randomXpos = new Vector3(-12f, Random.Range(-0.52f, 4.80f), 0);
            GameObject newEnemy = Instantiate(_wave2EnemyFacingRight, randomXpos, Quaternion.identity);
            newEnemy.transform.parent = _enemyContainer.transform;

            yield return new WaitForSeconds(_wave2WaitTime2);
        }
    }


    public void OnPlayerDeath()
    {
            _stopSpawningOnPlayerDeath = true;
    }

}