using Assets.Scripts;
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using static LevelSpawner;

public class MissileSpawnerScript : MonoBehaviour
{
#region PROPERTIES
#endregion
#region VARIABLES
    public float alertDuration = 5f;
    private int baseCountdown = 2;
    private int countdown = 0;

    private bool renderSprite;
    private MissileAlertScript missileAlertScript;
    private PlayerScript playerScript;

    private GameHandler _gameHandler;
    private DataBearer _dataBearer;
    private PlayersHandler _playersHandler;
    private LevelSpawner _leverSpawner;

    [SerializeField] private GameObject missileAlertRef;
    [SerializeField] private GameObject missilePrefab;

#endregion
#region EVENTS

    public event EventHandler<MissileEventArgs> OnMissileAlert;
    public event EventHandler<MissileEventArgs> OnMissileLaunched;

    public class MissileEventArgs : EventArgs
    {
        //todo : eventContent
    }

    private void MissileLaunchCountdown_OnPrefab(object sender, PrefabSpawnedEventArgs args)
       {
        if (countdown == baseCountdown)
        {
            StartCoroutine(MissileLaunchSequence());
            countdown = 0;
        }
        else
        {
            countdown++;
        }
    }

#endregion
#region METHODS
    private IEnumerator MissileLaunchSequence()
    {

        if(renderSprite)
            missileAlertScript.enabled = true;

        yield return new WaitForSeconds(alertDuration);
        missileAlertScript.enabled = false;
        SpawnMissile();
        
    }
    private void SpawnMissile()
     {
        var position = new Vector3(20, transform.position.y, -2);
        var instance = Instantiate(missilePrefab, position, missilePrefab.transform.rotation);
        instance.GetComponent<MissileScript>().SetTarget(playerScript.Id);
        instance.GetComponent<MissileScript>().SetRenderSprite(renderSprite);

        if (!renderSprite)
        {
            DestroyImmediate(instance.GetComponent<SpriteRenderer>(), true);
            instance.GetComponent<MissileScript>().StopParticles();
        }
    }

    #endregion
#region LIFECYCLE
    protected void Awake()
    {

        _dataBearer = DataBearer.Instance;
        _gameHandler = GameHandler.Instance;
        _playersHandler = PlayersHandler.Instance;
        _leverSpawner = LevelSpawner.Instance;

        if (!_dataBearer.Rules.Missiles)
        {
            Destroy(gameObject);
        }

        _leverSpawner.OnPrefabSpawned += MissileLaunchCountdown_OnPrefab;

        missileAlertScript = missileAlertRef.GetComponent<MissileAlertScript>();
        playerScript = GetComponentInParent<PlayerScript>();
    }

    private void Start()
    {
        renderSprite = !(_gameHandler.HaveHumanPlayer && !playerScript.IsHuman); // false if game has human and script is not human
    }

    private void OnDestroy()
    {
        Clean();
    }


    private void Clean()
    {
        StopAllCoroutines();

            LevelSpawner.Instance.OnPrefabSpawned -= MissileLaunchCountdown_OnPrefab;
    }
    #endregion

}