using UnityEngine;

public class Pickup : MonoBehaviour
{
    public PickupItemData itemData;
    public SpriteRenderer iconRenderer;
    private Interactable interactable;

    private bool pickupInProgress = false;
    private PlayerTouchController cachedPlayerController;

    void Awake()
    {
        if (iconRenderer == null)
            iconRenderer = GetComponent<SpriteRenderer>();
        interactable = GetComponent<Interactable>();
        if (interactable != null)
        {
            interactable.Interacted += OnInteracted;
        }
        ApplyItemData();
    }

    void OnDestroy()
    {
        if (interactable != null)
        {
            interactable.Interacted -= OnInteracted;
        }
    }

#if UNITY_EDITOR
    void OnValidate()
    {
        if (iconRenderer == null)
            iconRenderer = GetComponent<SpriteRenderer>();
        ApplyItemData();
    }

    void OnDrawGizmos()
    {
        // Use GameManager for playerStopDistance
        float playerStopDistance = GameManager.Instance.PlayerStopDistance;
        Gizmos.color = Color.yellow;
        Gizmos.DrawWireSphere(transform.position, playerStopDistance);
        GameObject playerObj = GameObject.FindGameObjectWithTag("Player");
        if (playerObj != null)
        {
            Vector3 stopPoint = transform.position + (playerObj.transform.position - transform.position).normalized * playerStopDistance;
            Gizmos.color = Color.cyan;
            Gizmos.DrawSphere(stopPoint, 0.15f);
        }
    }
#endif

    public void ApplyItemData()
    {
        if (itemData != null)
        {
            if (iconRenderer != null && itemData.mapSprite != null)
            {
                iconRenderer.sprite = itemData.mapSprite;
                // Removed scaling logic, just set sprite
            }
            gameObject.name = itemData.itemName;
            // Optionally update other fields, e.g. description
        }
    }

    private void OnInteracted()
    {
        if (pickupInProgress) return;
        var playerObj = GameObject.FindGameObjectWithTag("Player");
        var followerObj = GameObject.FindGameObjectWithTag("Pulver");
        if (playerObj == null || followerObj == null)
        {
            Debug.LogWarning("Pickup: Player or Follower not found.");
            return;
        }
        var playerController = playerObj.GetComponent<PlayerTouchController>();
        var followerController = followerObj.GetComponent<FollowerController>();
        if (playerController == null || followerController == null)
        {
            Debug.LogWarning("Pickup: PlayerTouchController or FollowerController missing.");
            return;
        }
        // Use GameManager for playerStopDistance and followerPickupDelay
        float playerStopDistance = GameManager.Instance.PlayerStopDistance;
        float followerPickupDelay = GameManager.Instance.FollowerPickupDelay;
        // Subscribe to cancellation event
        cachedPlayerController = playerController;
        void OnPlayerArrived()
        {
            playerController.OnArrivedAtTarget -= OnPlayerArrived;
            playerController.OnMoveToCancelled -= OnPlayerMoveCancelled;
            pickupInProgress = true; // Only lock when follower is about to be dispatched
            StartCoroutine(DispatchFollower());
        }
        void OnPlayerMoveCancelled()
        {
            playerController.OnArrivedAtTarget -= OnPlayerArrived;
            playerController.OnMoveToCancelled -= OnPlayerMoveCancelled;
            pickupInProgress = false;
        }
        System.Collections.IEnumerator DispatchFollower()
        {
            yield return new WaitForSeconds(followerPickupDelay);
            followerController.OnPickupArrived += OnFollowerArrived;
            followerController.OnPickupReturned += OnFollowerReturned;
            followerController.GoToPointAndReturn(transform.position, playerObj.transform);
        }
        void OnFollowerArrived()
        {
            followerController.OnPickupArrived -= OnFollowerArrived;
            bool interactionSuccess = true;
            if (interactable != null)
            {
                interactionSuccess = interactable.OnFollowerArrived(followerController);
            }
            followerController.SetInteractionResult(interactionSuccess);
        }
        void OnFollowerReturned()
        {
            followerController.OnPickupReturned -= OnFollowerReturned;
            pickupInProgress = false;
        }
        playerController.OnArrivedAtTarget += OnPlayerArrived;
        playerController.OnMoveToCancelled += OnPlayerMoveCancelled;
        Vector3 stopPoint = transform.position + (playerObj.transform.position - transform.position).normalized * playerStopDistance;
        playerController.MoveToAndNotify(stopPoint);
    }
}