using Photon.Pun;
using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

public class GamepadInteractionController : MonoBehaviour
{
    [Header("Settings")]
    [SerializeField] private float interactionRadius = 3f;
    [SerializeField] private float highlightRadius = 5f;
    [SerializeField] private LayerMask interactableMask;

    [Header("UI References")]
    [SerializeField] private GameObject interactionPrompt;
    [SerializeField] private Image interactionIcon;
    [SerializeField] private TMP_Text interactionText;

    private List<Interactable> nearbyInteractables = new List<Interactable>();
    private Interactable currentTarget;
    private PhotonView photonView;
    private bool isShowingInteractables;

    private void Awake()
    {
        photonView = GetComponent<PhotonView>();
    }

    private void Update()
    {
        if (!photonView.IsMine) return;

        // Show interactables when holding Right Trigger
        float rightTrigger = Input.GetAxisRaw("RightTrigger");
        isShowingInteractables = rightTrigger > 0.5f;

        if (isShowingInteractables)
        {
            UpdateNearbyInteractables();
            HighlightClosestInteractable();
        }
        else
        {
            ClearHighlights();
        }

        // Interact with Right Bumper
        if (Input.GetButtonDown("RightBumper") && currentTarget != null)
        {
            InteractWithCurrent();
        }
    }

    private void UpdateNearbyInteractables()
    {
        nearbyInteractables.Clear();
        Collider[] colliders = Physics.OverlapSphere(transform.position, highlightRadius, interactableMask);

        foreach (var collider in colliders)
        {
            if (collider.TryGetComponent<Interactable>(out var interactable))
            {
                nearbyInteractables.Add(interactable);
            }
        }
    }

    private void HighlightClosestInteractable()
    {
        float closestDistance = float.MaxValue;
        Interactable closest = null;

        foreach (var interactable in nearbyInteractables)
        {
            float distance = Vector3.Distance(transform.position, interactable.transform.position);
            if (distance < closestDistance)
            {
                closestDistance = distance;
                closest = interactable;
            }
        }

        // Only highlight if within interaction range
        if (closest != null && closestDistance <= interactionRadius)
        {
            SetCurrentTarget(closest);
        }
        else
        {
            ClearCurrentTarget();
        }
    }

    private void SetCurrentTarget(Interactable target)
    {
        if (currentTarget != target)
        {
            ClearCurrentTarget();
            currentTarget = target;

            // Show interaction prompt
            interactionPrompt.SetActive(true);
            interactionText.text = $"Press RB to {target.GetInteractionText()}";

            // Highlight the interactable
            target.OnHighlight();
        }
    }

    private void ClearCurrentTarget()
    {
        if (currentTarget != null)
        {
            currentTarget.OnUnhighlight();
            currentTarget = null;
            interactionPrompt.SetActive(false);
        }
    }

    private void ClearHighlights()
    {
        foreach (var interactable in nearbyInteractables)
        {
            interactable.OnUnhighlight();
        }
        nearbyInteractables.Clear();
        ClearCurrentTarget();
    }

    private void InteractWithCurrent()
    {
        if (currentTarget != null)
        {
            float distance = Vector3.Distance(transform.position, currentTarget.transform.position);
            if (distance <= interactionRadius)
            {
                currentTarget.Interact(true);
            }
        }
    }
}