using UnityEngine;
using UnityEngine.UI;
#if UNITY_EDITOR
using UnityEditor;
#endif


public class PlayerController : MonoBehaviour
{
    [Header("Keybinds")]
    public KeyCode forwardKey = KeyCode.W;
    public KeyCode backwardKey = KeyCode.S;
    public KeyCode leftKey = KeyCode.A;
    public KeyCode rightKey = KeyCode.D;

    [Header("Speed")]
    public float speed = 5;

    [Header("Lives")]
    public string enemyTag = "Enemy";
    public float invulnerabilityTimeSeconds = 0.25f;
    public float lastHit = 0;
    public int lives = 3;
    public GameObject[] hearts;

    [Header("Audio")]
    public AudioSource metalPipe;

    [Header("Player Object")]
    public Vector3 moveDirection;
    public Rigidbody rb;

    
    void Start()
    {
        if (hearts.Length != 3)
        {
            Debug.LogError("Hearts array not properly configured. Expected length 3.");
            enabled = false;
            return;
        }

        if (!TryGetComponent(out rb))
        {
            Debug.LogError("Rigidbody not found!");
            enabled = false; // Disable script if Rigidbody is missing.
        }
        else
        {
            rb.freezeRotation = true;
        }
    }

    void Update()
    {
        moveDirection = PlayerInput();
        rb.velocity = moveDirection.normalized * speed;
    }

    Vector3 PlayerInput()
    {
        Vector3 direction = Vector3.zero;

        if (Input.GetKey(rightKey)) direction.x += 1f;
        if (Input.GetKey(leftKey)) direction.x -= 1f;
        if (Input.GetKey(forwardKey)) direction.z += 1f;
        if (Input.GetKey(backwardKey)) direction.z -= 1f;

        return direction;
    }


    void OnCollisionEnter(Collision collision)
    {
        bool collidedWithEnemy = collision.gameObject.tag == enemyTag;
        bool isInvulnerable = invulnerabilityTimeSeconds >= Time.time - lastHit;
        if (collidedWithEnemy && !isInvulnerable)
        {
            lastHit = Time.time;
            metalPipe.Play();

            lives--;
            hearts[lives].GetComponent<RawImage>().color = Color.gray;

            bool playerOutOfLives = lives == 0;
            if (playerOutOfLives) ExitGame();
        }
    }

    void ExitGame()
    {
        #if UNITY_EDITOR
            EditorApplication.ExitPlaymode();
        #endif
            Application.Quit();
    }
}