using System;
using UnityEngine;
using UnityEngine.VFX;

using RR.Common.Audio;
using RR.Game2D.Core.Managers;

namespace RR.Game2D.Entities
{
    [RequireComponent(typeof(Collider2D))]
    public class Checkpoint : MonoBehaviour
    {
        public string checkpointId;
        public Vector2 spawnForward = Vector2.right;

        [SerializeField] private string playerTag = "Player";

        [Header("FX (необязательно)")]
        public VisualEffect activateVfx;
        public SoundEffect activateSfx;

        private bool _activated;
        private Collider2D _col;

        private void Awake()
        {
            _col = GetComponent<Collider2D>();
            _col.isTrigger = true;
            
            if (String.IsNullOrWhiteSpace(checkpointId))
                checkpointId = gameObject.name;
            
            if (!activateVfx.enabled) activateVfx.enabled = true;
            activateVfx.Stop();
        }

        private void OnTriggerEnter2D(Collider2D other)
        {
            if (_activated) return;

            // Определяем объект-источник (учтём Rigidbody, если он есть)
            var source = other.attachedRigidbody ? other.attachedRigidbody.gameObject : other.gameObject;
            if (!source.CompareTag(playerTag)) return;

            _activated = true;
            if (CheckpointSystem.Instance)
                CheckpointSystem.Instance.SetActive(this);

            if (activateVfx) 
            { 
                activateVfx.transform.position = _col.bounds.center;
                activateVfx.Play();
            }
            
            if (activateSfx.sound != null) GameManager.Instance.Audio.PlaySfxAt(activateSfx.sound,
                                                                                   _col.bounds.center,
                                                                                   activateSfx.volume,
                                                                                   activateSfx.pitch);
        }

        private void OnTriggerExit2D(Collider2D other)
        {
            var source = other.attachedRigidbody ? other.attachedRigidbody.gameObject : other.gameObject;
            if (!source.CompareTag(playerTag)) return;
            
            if (activateVfx) activateVfx.Stop(); 
        }

        public Vector3 GetSpawnPosition() => transform.position;
        public Vector2 GetForward() => spawnForward.sqrMagnitude > 0.0001f ? spawnForward.normalized : Vector2.right;

        // Для визуалки можно сделать метод Highlight(bool on) и менять спрайт/свет
    }
}