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using UnityEngine;
using UnityEngine.UI;

public abstract class WeaponBase : MonoBehaviour
{
    [Header("Weapon Settings")]
    public GameObject bulletPrefab;
    public Transform gunTip;
    public Camera playerCamera;
    public float bulletSpeed = 50f;
    public float fireRate = 0.2f;
    public int reserveAmmo = 30;
    public AudioClip shootSound;
    public Text ammoText;

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

    protected float lastFireTime = 0f;

    protected virtual void Start()
    {
        // 🔥 Change crosshair when this weapon is equipped
        if (crosshairUI != null && crosshairSprite != null)
        {
            crosshairUI.sprite = crosshairSprite;
        }
    }

    protected virtual void Update()
    {
        if (gameObject.activeInHierarchy && CanFire())
        {
            Fire();
        }
    }

    protected virtual bool CanFire()
    {
        return false; // Will be overridden in child classes
    }

    protected virtual void Fire()
    {
        lastFireTime = Time.time;

        if (reserveAmmo <= 0) return;

        if (shootSound != null)
        {
            AudioSource.PlayClipAtPoint(shootSound, gunTip.position);
        }

        // 🔥 Aim directly at the crosshair (center of the screen)
        Vector3 screenCenter = new Vector3(Screen.width / 2, Screen.height / 2, 0);
        Ray ray = playerCamera.ScreenPointToRay(screenCenter);
        RaycastHit hit;
        Vector3 targetPoint;

        if (Physics.Raycast(ray, out hit, 100f)) // 🔥 Check if we hit something
        {
            targetPoint = hit.point;
        }
        else
        {
            targetPoint = ray.GetPoint(100f); // 🔥 Shoot straight ahead
        }

        // 🔥 Fire the bullet towards the target point
        Vector3 direction = (targetPoint - gunTip.position).normalized;
        GameObject bullet = Instantiate(bulletPrefab, gunTip.position, Quaternion.LookRotation(direction));
        bullet.GetComponent<Rigidbody>().velocity = direction * bulletSpeed;

        Destroy(bullet, 2f);
        reserveAmmo--;

        UpdateAmmoUI();
    }

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