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

public class Opponent : Entity
{
    public override Vector2 RangeMultiplier => GlobalConfig.Instance.Current.enemyRangeMultiplier;
    public override float DamageMultiplier => GlobalConfig.Instance.Current.enemyDamageMultiplier;
    public override float AttackSpeedMultiplier => GlobalConfig.Instance.Current.enemyAttackSpeedMultiplier;
    public override float HpMultiplier => GlobalConfig.Instance.Current.enemyLifeMultiplier;
    public override float SpeedMultiplier => GlobalConfig.Instance.Current.enemySpeedMultiplier;

    private Vector2 _movementVector = Vector2.zero;
    private Rigidbody2D _rigidbody;
    private WaveObserver _observer;
    private int _observerIndex;
    private float _toughness;
    private bool _hasMonsterCore = false;
    private bool _isDying = false;


    public override void Start()
    {
        base.Start();

        _rigidbody = GetComponent<Rigidbody2D>();
        Animation = gameObject.AddComponent<AnimationEntity>();
        _observer = WaveObserver.Instance;
        _toughness = Mathf.Round((Hp / 10) / 2);
        _observerIndex = _observer.NotifyEnemy(transform.position.y, _toughness);
    }

    public override void Update()
    {
        base.Update();
        if (IsEnemyDetected)
        {
            AttackEnemy();
        }
        else
        {
            _movementVector.x = -Time.deltaTime * Speed;

            transform.position += (Vector3)_movementVector;

            Move();
        }
    }

    void AttackEnemy()
    {
        //Attack Cooldown
        if (AttackInterval < AttackSpeedWait)
        {
            Animation.PlayAttackAnim();

            AttackSpeedWait = 0f;
        }

        AttackSpeedWait += Time.deltaTime;
    }

    public override void Death()
    {
        if (!_isDying)
        {
            if (_hasMonsterCore)
            {
                DropMonsterCore();
            }
            _isDying = true;
            _observer.NotifyDies(_observerIndex, _toughness, gameObject);
            base.Death();
        }
    }

    private void DropMonsterCore()
    {
        GameObject _monsterCorePrefab = Database.Instance.Prefabs["yieldMonsterCore"];

        if (_monsterCorePrefab != null)
        {
            Instantiate(_monsterCorePrefab, transform.position, Quaternion.identity);
            _hasMonsterCore = false;
        }
    }

    public void ActivateMonsterCore()
    {
        _hasMonsterCore = true;
    }

}