using UnityEngine;
using Code.Gameplay.Player;
using DG.Tweening;

namespace Code.Gameplay.Enemies
{
    public class BasicEnemy : MonoBehaviour, IEnemy
    {
        [SerializeField] private float _speed = 2f;
        [SerializeField] private float _patrolDistance = 3f;

        [SerializeField] private int _health = 2;
        
        [SerializeField] private SpriteRenderer _spriteRenderer;
        
        [SerializeField] private float _blinkDuration = 0.2f;
        [SerializeField] private Color _hitColor = Color.red;
        
        private Color _originalColor;

        private Vector3 _startPosition;
        private bool _facingRight = true;

        private void Start()
        {
            _startPosition = transform.position;
        }

        private void Update()
        {
            Patrol();
        }

        private void Patrol()
        {
            var targetX = _facingRight 
                ? _startPosition.x + _patrolDistance 
                : _startPosition.x - _patrolDistance;

            transform.position = Vector3.MoveTowards(
                transform.position,
                new Vector3(targetX, transform.position.y, transform.position.z),
                _speed * Time.deltaTime
            );

            if (Mathf.Approximately(transform.position.x, targetX))
            {
                Flip();
            }
        }

        private void Flip()
        {
            _facingRight = !_facingRight;
            transform.localScale = new Vector3(
                -transform.localScale.x,
                transform.localScale.y,
                transform.localScale.z
            );
        }

        private void OnTriggerEnter2D(Collider2D other)
        {
            if (!other.CompareTag("Player")) return;
            
            var playerHealth = other.GetComponent<PlayerHealth>();
            playerHealth?.TakeDamage();
        }

        public void TakeDamage()
        {
            _health--;
            BlinkHit();
            if (_health <= 0)
            {
                Die();
            }
        }
        
        private void BlinkHit()
        {
            var originalColor = _spriteRenderer.color;
            var hitColor = new Color(_hitColor.r, _hitColor.g, _hitColor.b, originalColor.a);

            DOTween.Sequence()
                .Append(_spriteRenderer.DOColor(hitColor, _blinkDuration / 4))
                .Append(_spriteRenderer.DOColor(originalColor, _blinkDuration / 4))
                .Append(_spriteRenderer.DOColor(hitColor, _blinkDuration / 4))
                .Append(_spriteRenderer.DOColor(originalColor, _blinkDuration / 4))
                .SetEase(Ease.Linear)
                .SetLink(gameObject);
        }

        private void Die()
        {
            Destroy(gameObject);
        }
    }
}