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

public class Player : MonoBehaviour
{
    [SerializeField]
    private int _lives = 3;
    [SerializeField]
    private GameObject _laserPrefab;
    [SerializeField]
    private GameObject _tripleShotPrefab;
    [SerializeField]
    private GameObject _fireLeft, _fireRight;

    private float _speed = 5;
    private float _speedMultipler = 1;
    private float _fireRate = 0.2f;
    private float _canFire;
    private bool _isTripleShootActive;
    private bool _isShieldActive;
    private int _score;

    private UIManager _uiManager;
    private GameObject _shieldVisualizer;
    private SpawnManager _spawnManager;
    private AudioSource[] _audioClip;

    void Start()
    {
        GameManager _gameManager = GameObject.Find("GameManager").GetComponent<GameManager>();

        if (_gameManager.IsCoopMode == false)
        {
            transform.position = Vector3.zero;
        }

        _spawnManager = GameObject.Find("Spawn_manager").GetComponent<SpawnManager>();
        _shieldVisualizer = GameObject.Find("ShieldVisualizer");
        _uiManager = GameObject.Find("Canvas").GetComponent<UIManager>();
        _audioClip = GetComponents<AudioSource>();

        if (_spawnManager == null)
        {
            Debug.LogError("The Spawn Manager is NULL.");
        }

        if (_shieldVisualizer != null)
        {
            _shieldVisualizer.SetActive(false);
        } else
        {
            Debug.LogError("The Shield Visualizer is NULL.");
        }
        if (_audioClip == null)
        {
            Debug.LogError("AudioClip component is NULL.");
        }

        _fireLeft.SetActive(false);
        _fireRight.SetActive(false);
    }

    void Update()
    {
        CalculateMovement();

        if (Input.GetKeyDown(KeyCode.Space) && Time.time > _canFire)
        {
            FireLaser();
        }
    }

    private void FireLaser()
    {
        _canFire = Time.time + _fireRate;

        if (_isTripleShootActive == true)
        {
            Instantiate(_tripleShotPrefab, transform.position + new Vector3(0, 0.8f, 0), Quaternion.identity);
        }
        else
        {
            Instantiate(_laserPrefab, transform.position + new Vector3(0, 0.8f, 0), Quaternion.identity);
        }

        _audioClip[0].Play();
    }

    private void CalculateMovement()
    {
        float horizontalInput = Input.GetAxis("Horizontal");
        float verticalInput = Input.GetAxis("Vertical");
        Vector3 directions = new Vector3(horizontalInput, verticalInput, 0);

        transform.Translate(directions * _speed * _speedMultipler * Time.deltaTime);

        transform.position = new Vector3(transform.position.x, Mathf.Clamp(transform.position.y, -3.5f, 0), 0);

        if (transform.position.x > 11)
        {
            transform.position = new Vector3(-11, transform.position.y, 0);
        }
        else if (transform.position.x < -11)
        {
            transform.position = new Vector3(11, transform.position.y, 0);
        }
    }

    public void Damage()
    {
        if (_isShieldActive == true)
        {
            _isShieldActive = false;
            _shieldVisualizer.SetActive(false);
            return;
        }

        _lives--;
        _audioClip[1].Play();

        if (_lives == 2)
        {
            _fireLeft.SetActive(true);
        } else
        {
            _fireRight.SetActive(true);
        }

        _uiManager.UpdateLives(_lives);

        if (_lives < 1)
        {
            _spawnManager.OnPlayerDeath();
            Destroy(this.gameObject);
        }
    }

    public void SetTrippleShotActive()
    {
        _audioClip[2].Play();
        _isTripleShootActive = true;
        StartCoroutine(UnsetTrippleShotActive());
    }

    private IEnumerator UnsetTrippleShotActive()
    {
        yield return new WaitForSeconds(5);
        _isTripleShootActive = false;

    }

    public void SetSpeedBoostActive()
    {
        _audioClip[2].Play();
        _speedMultipler = 2;
        StartCoroutine(UnsetSpeedBoostActive());
    }

    private IEnumerator UnsetSpeedBoostActive()
    {
        yield return new WaitForSeconds(5);
        _speedMultipler = 1;
    }

    public void SetShieldActive()
    {
        _audioClip[2].Play();
        _isShieldActive = true;
        _shieldVisualizer.SetActive(true);
    }

    public void AddScore(int score)
    {
        _score += score;
        _uiManager.UpdateScore(_score);
    }

    private void OnTriggerEnter2D(Collider2D other)
    {
        string colliderTag = other.tag;

        if (colliderTag == "EnemyLasers")
        {
            Damage();
            Destroy(other.gameObject);
        }
    }
}