using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using TMPro;

public class ObjectPhysicsInfo : MonoBehaviour
{

    public TextMeshProUGUI infoText;
    private Rigidbody _rb;

    private float _startTime;
    private float _startHeight;
    private bool _isFalling = false;
    private bool _hasLanded = false;
    private float _startMass;

    void Start()
    {
        _rb = GetComponent<Rigidbody>();
        _startMass = _rb.mass;

        if (infoText != null) infoText.text = "";
    }

    void Update()
    {
        if (infoText != null)
        {
            infoText.transform.parent.LookAt(Camera.main.transform);
            infoText.transform.parent.Rotate(0, 180, 0);
        }
    }

    public void OnRelease()
    {
        _startTime = Time.time;
        _startHeight = transform.position.y;
        _isFalling = true;
        _hasLanded = false;

        if (infoText != null) infoText.text = "";
    }

    void OnCollisionEnter(Collision collision)
    {

        if (_isFalling && !_hasLanded && collision.gameObject.CompareTag("Ground"))
        {
            _hasLanded = true;
            _isFalling = false;

            float fallTime = Time.time - _startTime;
            float dropHeight = _startHeight - transform.position.y;
            float impactSpeed = _rb.velocity.magnitude;
            float mass = _startMass;
            float gravityForce = mass * 9.8f;

            float theoreticalTime = Mathf.Sqrt((2 * dropHeight) / 9.8f);

            if (infoText != null)
            {
                infoText.text =
                     $"Висота: {dropHeight:F2} м\n" +
                     $"Час падіння: {fallTime:F2} с\n" +
                     $"Швидкість: {impactSpeed:F2} м/с\n" +
                     $"Маса: {mass:F2} кг\n" +
                     $"Сила тяжіння: {mass:F2} × 9.8 = ?? Н\n" +
                     $"Прискорення: 9.8 м/с²";
            }

            AirTrailController trail = GetComponentInChildren<AirTrailController>();
            if (trail != null)
            {
                trail.Deactivate();
            }

            Invoke("ClearText", 15f);
        }
    }

    void ClearText()
    {
        if (infoText != null)
            infoText.text = "";
    }
}