using UnityEngine;
using System;
using System.Collections;

[RequireComponent(typeof(Animator), typeof(CapsuleCollider))]
public class PlayerController : MonoBehaviour
{
    [Header("Movement")]
    public float moveSpeed = 8f;
    public float speedIncreaseRate = 0.1f;
    public float jumpForce = 10f;
    public float laneChangeSpeed = 15f;
    public float laneWidth = 4f;

    [Header("Gameplay")]
    public float invincibilityDuration = 5f; // Длительность неуязвимости в секундах

    [Header("Collider")]
    public float slideColliderHeight = 0.5f;
    public float slideColliderCenterY = 0.25f;

    private Rigidbody rb;
    private Animator animator;
    private CapsuleCollider capsuleCollider;

    private bool isGrounded = true;
    private bool isSliding = false;
    private bool isInvincible = false;
    private int currentLane = 0;
    private Vector3 targetPosition;

    private float originalColliderHeight;
    private float originalColliderCenterY;

    public static int coinCount = 0;
    public static event Action OnPlayerDied;
    private bool isAlive = true;

    void Start()
    {
        rb = GetComponent<Rigidbody>();
        animator = GetComponent<Animator>();
        capsuleCollider = GetComponent<CapsuleCollider>();
        originalColliderHeight = capsuleCollider.height;
        originalColliderCenterY = capsuleCollider.center.y;
        coinCount = 0;
        isAlive = true;
        Time.timeScale = 1f;
        targetPosition = transform.position;
    }

    void Update()
    {
        if (!isAlive) return;
        moveSpeed += speedIncreaseRate * Time.deltaTime;
        HandleInput();
        MovePlayer();
    }

    void HandleInput()
    {
        if (Input.GetKeyDown(KeyCode.A) || Input.GetKeyDown(KeyCode.LeftArrow)) ChangeLane(-1);
        else if (Input.GetKeyDown(KeyCode.D) || Input.GetKeyDown(KeyCode.RightArrow)) ChangeLane(1);
        if (Input.GetKeyDown(KeyCode.Space) && isGrounded) Jump();
        if (Input.GetKeyDown(KeyCode.S) || Input.GetKeyDown(KeyCode.DownArrow)) Slide();
    }

    void MovePlayer()
    {
        targetPosition.x = currentLane * laneWidth;
        Vector3 newPosition = new Vector3(
            Mathf.Lerp(transform.position.x, targetPosition.x, laneChangeSpeed * Time.deltaTime),
            transform.position.y,
            transform.position.z + moveSpeed * Time.deltaTime
        );
        transform.position = newPosition;
    }

    void ChangeLane(int direction)
    {
        int newLane = currentLane + direction;
        if (newLane >= -1 && newLane <= 1) currentLane = newLane;
    }

    void Jump()
    {
        isGrounded = false;
        rb.AddForce(Vector3.up * jumpForce, ForceMode.Impulse);
        animator.SetTrigger("Jump");
    }

    void Slide()
    {
        if (!isSliding)
        {
            isSliding = true;
            animator.SetTrigger("Slide");
            capsuleCollider.height = slideColliderHeight;
            capsuleCollider.center = new Vector3(0, slideColliderCenterY, 0);
            Invoke(nameof(StopSliding), 0.75f);
        }
    }

    void StopSliding()
    {
        isSliding = false;
        capsuleCollider.height = originalColliderHeight;
        capsuleCollider.center = new Vector3(0, originalColliderCenterY, 0);
    }

    void OnCollisionEnter(Collision collision)
    {
        if (collision.gameObject.CompareTag("Ground")) isGrounded = true;
        
        // Если мы неуязвимы, игнорируем столкновения с препятствиями
        if (isInvincible) return;

        if (collision.gameObject.CompareTag("Obstacle") && isAlive) Die();
        else if (collision.gameObject.CompareTag("HighObstacle") && !isSliding && isAlive) Die();
    }

    void OnTriggerEnter(Collider other)
    {
        if (!isAlive) return;

        if (other.gameObject.CompareTag("Coin"))
        {
            coinCount++;
            AudioManager.Instance.PlayCoinSound();
            Destroy(other.gameObject);
        }
        else if (other.gameObject.CompareTag("InvincibilityBonus"))
        {
            StartCoroutine(ActivateInvincibility());
            Destroy(other.gameObject);
        }
    }

    private IEnumerator ActivateInvincibility()
    {
        isInvincible = true;
        Debug.Log("Неуязвимость активирована!");
        // Здесь можно добавить визуальный эффект, например, изменение цвета материала
        yield return new WaitForSeconds(invincibilityDuration);
        isInvincible = false;
        Debug.Log("Неуязвимость закончилась.");
    }

    void Die()
    {
        isAlive = false;
        animator.SetBool("IsDead", true);
        if (OnPlayerDied != null) Invoke(nameof(TriggerGameOver), 1.5f);
    }

    void TriggerGameOver()
    {
        Time.timeScale = 0f;
        OnPlayerDied();
    }
}