using UnityEngine;

public class PlayerFireScript : MonoBehaviour
{
    [Header("Projectile (single instance)")]
    [SerializeField] public PickableProjectile projectilePrefab;
    public bool spawnIfMissing = true;

    [Header("Throw / Pickup")]
    public Transform attachPoint;
    public KeyCode actionKey = KeyCode.F;
    public float throwSpeed = 20f;

    private PickableProjectile pickableProj;

    void Awake()
    {
        if (!attachPoint)
            attachPoint = FindDeepChild(transform, "HandPoint");

        if (!attachPoint)
            Debug.LogWarning("PlayerFireScript: attachPoint не задан и HandPoint не найден. Будет использован корень игрока.");
    }

     void Update()
    {
        if (!Input.GetKeyDown(actionKey)) return;

        if (pickableProj == null)
            pickableProj = PickableProjectile.Instance;

        if (pickableProj == null)
        {
            if (!spawnIfMissing || projectilePrefab == null)
            {
                Debug.Log("PlayerFireScript: projectile missing; enable spawnIfMissing and assign projectilePrefab.");
                return;
            }

            Vector3 spawnPos = attachPoint ? attachPoint.position : transform.position;
            pickableProj = Instantiate(projectilePrefab, spawnPos, Quaternion.identity);
            pickableProj.TryPickup(gameObject, attachPoint);
            return;
        }

        // Бросок
        if (pickableProj.CurrentState == PickableProjectile.State.Held && pickableProj.owner == gameObject)
        {
            float sx = transform.localScale.x;
            float facing = Mathf.Sign(sx == 0 ? 1 : sx);
            Vector2 dir = facing > 0 ? Vector2.right : Vector2.left;
            Vector2 launchPos = (Vector2)transform.position + new Vector2(1.4f * facing, 0f);

            var s = pickableProj.transform.localScale;
            pickableProj.transform.localScale = new Vector3(Mathf.Abs(s.x) * -facing, s.y, s.z);

            pickableProj.transform.position = launchPos;
            pickableProj.Launch(dir, throwSpeed, gameObject);
        }
    }

    public void BindProjectile(PickableProjectile proj) => pickableProj = proj;

    private Transform FindDeepChild(Transform parent, string name)
    {
        foreach (Transform child in parent)
        {
            if (child.name == name) return child;
            var r = FindDeepChild(child, name);
            if (r) return r;
        }
        return null;
    }
}