using RR.Game2D.Behaviour;
using RR.Game2D.Core;
using UnityEngine;
using UnityEngine.VFX;

[RequireComponent(typeof(VisualEffect))]
public class PlayerRunVFX : MonoBehaviour
{
    [SerializeField] private VisualEffect runVFX;
    [SerializeField] private Vector2 offset = Vector2.zero;
    [SerializeField] private float requiredPlayerRunTime;
    
    private GameObject player;
    private Rigidbody2D playerRB;
    private PlayerController playerController;
    private float startRunTime = 0;

    private Vector3 particlesVelocityDirection;
    
    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
        player = GameManager.Instance.PlayerObj;
        playerRB = player.GetComponent<Rigidbody2D>();
        playerController = player.GetComponent<PlayerController>();
        
        if (player == null) player = GameObject.FindGameObjectWithTag("Player");

        particlesVelocityDirection = runVFX.GetVector3("ParticlesVelocityDirection");
        runVFX.Stop();
        // runVFX.enabled = false;
    }

    // Update is called once per frame
    void Update()
    {
        
        if (playerController.IsGrounded) transform.position = player.transform.position
                                                              + new Vector3(offset.x * Mathf.Sign(playerRB.linearVelocityX), offset.y, 0f);
        else transform.position = new Vector3(player.transform.position.x, transform.position.y, transform.position.z);

        if (!runVFX.enabled) runVFX.enabled = true;
        
        if (Mathf.Abs(playerRB.linearVelocityX) >= 0.01f && playerController.IsGrounded)
        {
            if (startRunTime == 0) startRunTime = Time.time;
            
            if (Time.time - startRunTime < requiredPlayerRunTime) return;
            runVFX.Play();
            runVFX.SetVector3("ParticlesVelocityDirection", new Vector3(particlesVelocityDirection.x * Mathf.Sign(playerRB.linearVelocityX),
                                                                              particlesVelocityDirection.y,
                                                                              particlesVelocityDirection.z));
            return;
        }
        if (playerRB.linearVelocityY >= 0.25f * playerController.jumpVelocity)
        {
            runVFX.SetVector3("ParticlesVelocityDirection", new Vector3(particlesVelocityDirection.x * Mathf.Sign(playerRB.linearVelocityX),
                                                                              playerRB.linearVelocityY,
                                                                              particlesVelocityDirection.z));
            runVFX.Play();
            if (playerRB.linearVelocityX == 0) startRunTime = 0;
            return;
        }

        startRunTime = 0;
        runVFX.Stop();
    }
}