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using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class SelectionManager : MonoBehaviour
{
    public static SelectionManager Instance { get; set; }

    public bool onTarget;
    public GameObject selectedObject;
    public GameObject interaction_Info_UI;
    Text interaction_text;

    public Image centerDotIcon;
    public Image handIcon;

    public bool handIsVisible;

    public GameObject selectedTree;
    public GameObject chopHolder;

    private void Awake()
    {
        if (Instance != null && Instance != this)
        {
            DestroyObject(gameObject);
        }
        else
        {
            Instance = this;
        }

    }

    private void Start()
    {
        onTarget = false;

        interaction_text = interaction_Info_UI.GetComponent<Text>();
    }

    void Update()
    {
        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        RaycastHit hit;
        if (Physics.Raycast(ray, out hit))
        {
            var selectionTransform = hit.transform;

            InteractableObject interactable = selectionTransform.GetComponent<InteractableObject>();


            if (interactable)
            {
                ChoppableTree choppableTree = selectionTransform.GetComponent<ChoppableTree>();

                if (interactable.transform.Find("base_tree"))
                {
                    choppableTree = interactable.transform.Find("base_tree").transform.GetComponent<ChoppableTree>();
                }

                if (choppableTree && choppableTree.playerInRanger)
                {
                    choppableTree.canBeChopped = true;
                    selectedTree = choppableTree.gameObject;
                    chopHolder.gameObject.SetActive(true);
                }
                else
                {
                    if (selectedTree != null)
                    {
                        selectedTree.gameObject.GetComponent<ChoppableTree>().canBeChopped = false;
                        selectedTree = null;
                        chopHolder.gameObject.SetActive(false);
                    }
                }
                interaction_text.text = interactable.GetItemName();
                interaction_Info_UI.SetActive(true);
                if (interactable.playerInRanger)
                {
                    onTarget = true;
                    selectedObject = interactable.gameObject;

                    if (interactable.CompareTag("pickable"))
                    {
                        centerDotIcon.gameObject.SetActive(false);
                        handIcon.gameObject.SetActive(true);
                        handIsVisible = true;
                    }
                    else
                    {
                        centerDotIcon.gameObject.SetActive(true);
                        handIcon.gameObject.SetActive(false);
                        handIsVisible = false;

                    }
                }
                else
                {
                    onTarget = false;
                    centerDotIcon.gameObject.SetActive(true);
                    handIcon.gameObject.SetActive(false);
                    handIsVisible = false;

                }

            }
            else
            {
                onTarget = false;
                interaction_Info_UI.SetActive(false);
                centerDotIcon.gameObject.SetActive(true);
                handIcon.gameObject.SetActive(false);
                handIsVisible = false;

            }

        }
        else
        {
            onTarget = false;
            interaction_Info_UI.SetActive(false);
            centerDotIcon.gameObject.SetActive(true);
            handIcon.gameObject.SetActive(false);
            handIsVisible = false;

        }
    }

    public void DisableSelection()
    {
        handIcon.enabled = false;
        centerDotIcon.enabled = false;
        interaction_Info_UI.SetActive(false);
        selectedObject = null;
    }

    public void EnableSelection()
    {
        handIcon.enabled = true;
        centerDotIcon.enabled = true;
        interaction_Info_UI.SetActive(true);
    }
}