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using UnityEngine;
using UnityEngine.UI;

public class Weapon : MonoBehaviour
{
    [Header("Weapon Settings")]
    public GameObject bulletPrefab;
    public Transform gunTip;
    public Camera playerCamera;
    public float bulletSpeed = 50f;
    public float bulletSpread = 0.1f;
    public float range = 100f;
    public LayerMask hitLayer;

    [Header("Bullet Hole Settings")]
    public GameObject bulletHolePrefab;
    public Material bulletHoleMaterial;
    public float bulletHoleLifetime = 5f;

    [Header("Weapon General Settings")]
    public string weaponName;
    public int damage = 10;
    public float fireRate = 0.2f;
    public bool isAutomatic = false;
    public int bulletsPerShot = 1;

    [Header("Ammo Settings")]
    public int reserveAmmo = 50;
    public Text ammoText;

    [Header("Effects")]
    public GameObject muzzleFlashPrefab;
    public AudioClip shootSound;

    [Header("Crosshair Settings")]
    public Sprite crosshairSprite; // 🔥 Unique crosshair for each weapon
    public Image crosshairUI; // 🔥 UI element for the crosshair

    private float lastShotTime = 0f;

    void Start()
    {
        UpdateAmmoUI();
        UpdateCrosshair(); // 🔥 Set the crosshair when the weapon is equipped
    }

    void Update()
    {
        if (isAutomatic)
        {
            if (Input.GetMouseButton(0) && Time.time >= lastShotTime + fireRate)
            {
                Shoot();
            }
        }
        else
        {
            if (Input.GetMouseButtonDown(0) && Time.time >= lastShotTime + fireRate)
            {
                Shoot();
            }
        }
    }

    public void UpdateAmmoUI()
    {
        if (ammoText != null)
            ammoText.text = $"Ammo: {reserveAmmo}";
    }

    public void UpdateCrosshair()
    {
        if (crosshairUI != null && crosshairSprite != null)
        {
            crosshairUI.sprite = crosshairSprite; // 🔥 Change the crosshair when switching weapons
        }
    }

    public void Shoot()
    {
        if (reserveAmmo <= 0) return;

        lastShotTime = Time.time;

        if (shootSound != null)
        {
            AudioSource audioSource = GetComponent<AudioSource>();
            if (audioSource != null)
                audioSource.PlayOneShot(shootSound);
        }

        if (muzzleFlashPrefab != null)
        {
            GameObject muzzleFlash = Instantiate(muzzleFlashPrefab, gunTip.position, gunTip.rotation);
            Destroy(muzzleFlash, 0.1f);
        }

        for (int i = 0; i < bulletsPerShot; i++)
        {
            FireBullet();
        }

        reserveAmmo -= bulletsPerShot;
        UpdateAmmoUI();
    }

    public void AddAmmo(int amount)
    {
        reserveAmmo += amount;
        UpdateAmmoUI();
    }

    private void FireBullet()
    {
        Vector3 screenCenter = new Vector3(Screen.width / 2, Screen.height / 2, 0);
        Ray ray = playerCamera.ScreenPointToRay(screenCenter);
        RaycastHit hit;
        Vector3 targetPoint = ray.GetPoint(range);

        if (Physics.Raycast(ray, out hit, range, hitLayer))
        {
            targetPoint = hit.point;
            CreateBulletHole(hit);
        }
    }

    private void CreateBulletHole(RaycastHit hit)
    {
        if (bulletHolePrefab != null && bulletHoleMaterial != null)
        {
            GameObject bulletHole = Instantiate(bulletHolePrefab, hit.point + (hit.normal * 0.01f), Quaternion.LookRotation(-hit.normal));
            bulletHole.transform.SetParent(hit.collider.transform);

            Projector projector = bulletHole.GetComponent<Projector>();
            if (projector != null)
            {
                projector.material = new Material(bulletHoleMaterial); // Ensure material instance is unique
            }

            Destroy(bulletHole, bulletHoleLifetime);
        }
    }
}