using System;
using UnityEngine;

namespace RR.Game2D.Behaviour
{
    [RequireComponent(typeof(BoxCollider2D))]
    public class JumpPad2D : MonoBehaviour
    {
        [SerializeField] private float verticalBand = 0.5f;
        private BoxCollider2D _col;

        public Action<GameObject> PlayerJumped;

        private void Awake()
        {
            _col = GetComponent<BoxCollider2D>();

            if (!_col.isTrigger)
                _col.isTrigger = true;
        }

        //private void OnTriggerEnter2D(Collider2D other)
        //{
        //    var d = col.Distance(other);

        //    Vector2 contactMid = (d.pointA + d.pointB) * 0.5f;

        //    bool topByNormal = IsTopByNormal(col, d.normal, maxAngleDeg: 30f);

        //    bool topByBox = false;
        //    if (col is BoxCollider2D box)
        //        topByBox = IsTopByLocalY(box, contactMid, bandPercent: bandPercent);

        //    bool isTopContact = topByNormal || topByBox;

        //    if (isTopContact)
        //    {
        //        if (other.CompareTag("Player"))
        //        {
        //            PlayerController playerController = other.GetComponent<PlayerController>();
        //            Rigidbody2D playerRB = other.GetComponent<Rigidbody2D>();

        //            Vector2 newPlayerVelocity = playerRB.linearVelocity;
        //            newPlayerVelocity.y = playerController.jumpVelocity;
        //            playerRB.linearVelocity = newPlayerVelocity;
        //        }
        //    }
        //    //var distance = col.Distance(collision);
        //    //Vector2 localPoint = col.transform.InverseTransformPoint(distance.pointA);
        //    //float halfHeight = col.size.y * 0.5f;
        //    //float topY = col.offset.y * halfHeight;

        //    //float band = Mathf.Max(0.001f, col.size.y * bandPercent);
        //}

        private void OnTriggerEnter2D(Collider2D other)
        {
            if (other.CompareTag("Player"))
            {
                PlayerController playerController = other.GetComponent<PlayerController>();
                Rigidbody2D playerRB = other.GetComponent<Rigidbody2D>();

                if (Mathf.Abs(other.transform.position.y - _col.bounds.max.y) <= verticalBand)
                {
                    Vector2 newPlayerVelocity = playerRB.linearVelocity;
                    newPlayerVelocity.y = playerController.jumpVelocity;
                    playerRB.linearVelocity = newPlayerVelocity;

                    PlayerJumped?.Invoke(other.gameObject);
                }
            }
        }

        //public static bool IsTopByNormal(Collider2D myCol, Vector2 contactNormal, float maxAngleDeg = 30f)
        //{
        //    var up = (Vector2)myCol.transform.up;
        //    float cos = Vector2.Dot(contactNormal.normalized, up);
        //    float cosThresh = Mathf.Cos(maxAngleDeg * Mathf.Deg2Rad);
        //    return cos >= cosThresh;
        //}

        //public static bool IsTopByLocalY(BoxCollider2D box, Vector2 worldPoint, float bandPercent = 0.1f)
        //{
        //    // Локальная точка
        //    Vector2 pLocal = box.transform.InverseTransformPoint(worldPoint);
        //    // Верхняя кромка в локальных координатах с учётом offset
        //    float halfH = box.size.y * 0.5f;
        //    float topY = box.offset.y + halfH;

        //    // Ширина допустимого пояска (процент от высоты коробки)
        //    float band = Mathf.Max(0.001f, box.size.y * bandPercent);

        //    return pLocal.y >= (topY - band);
        //}
    }
}