using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;

public class FakeFingerManager : MonoBehaviour, IPointerDownHandler, IBeginDragHandler, IEndDragHandler, IDragHandler, IDropHandler{

    public HandManager.FingerTypes fingerType = HandManager.FingerTypes.Default;

    [SerializeField] Canvas canvas = default;

    RectTransform rectTransform;
    CanvasGroup canvasGroup;
    Vector2 defaultPos;

    [SerializeField] float smoothTime = .5f;
    [HideInInspector] public bool dragging;
    [HideInInspector] public Vector2 posToGo;
    Vector2 position;

    [HideInInspector] public bool setPos;
    [HideInInspector] public int index;

    void Awake(){
        rectTransform = GetComponent<RectTransform>();
        canvasGroup = GetComponent<CanvasGroup>();
        defaultPos = posToGo = rectTransform.anchoredPosition;
    }

    public void OnBeginDrag(PointerEventData eventData){
        canvasGroup.blocksRaycasts = false;
        canvasGroup.alpha = .6f;
        dragging = true;
        setPos = false;
    }

    public void OnDrag(PointerEventData eventData){
        rectTransform.anchoredPosition += eventData.delta / canvas.scaleFactor;
    }

    public void OnEndDrag(PointerEventData eventData){
        StartCoroutine(ResetToDefaultPos());
        canvasGroup.blocksRaycasts = true;
        canvasGroup.alpha = 1f;
    }

    public void OnPointerDown(PointerEventData eventData){
        
    }

    public void OnDrop(PointerEventData eventData){
    
    }

    void Update(){
        if(!dragging)
            rectTransform.anchoredPosition = Vector2.SmoothDamp(rectTransform.anchoredPosition, posToGo, ref position, smoothTime);
    }

    IEnumerator ResetToDefaultPos(){
        yield return new WaitForSeconds(.1f);
        if (!setPos){
            /*switch(index){
                case 1:
                    hand.finger1 = false;
                    break;
                case 2:
                    hand.finger2 = false;
                    break;
                case 3:
                    hand.finger3 = false;
                    break;
                case 4:
                    hand.finger4 = false;
                    break;
                case 5:
                    hand.finger5 = false;
                    break;
            }*/
            posToGo = defaultPos;
            dragging = false;
        }
    }
}