using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class RQNA_Dragger : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
{
    public RQNA_AnswerClass thisAnswer;
    private Text thisTxt;
    public bool isAnswered;
    public Transform defaultParent;
    public int index;
    private Animator anim;

    private void Awake()
    {
        isAnswered = false;
        thisTxt = GetComponentInChildren<Text>();
        anim = GetComponent<Animator>();
        defaultParent = GameObject.Find("GameCanvas").transform;
    }

    public void Setup(RQNA_AnswerClass thisA, int ind)
    {
        thisAnswer = thisA;
        thisTxt.text = thisAnswer.answerStr;
        index = ind;
    }

    public void OnDrag(PointerEventData data)
    {
        Vector2 vz = Vector2.zero;
        if (!isAnswered)
        {
            thisTxt.transform.position = Vector2.SmoothDamp(thisTxt.transform.position, data.position, ref vz, .015f);
        }
    }

    public void OnBeginDrag(PointerEventData data)
    {
        anim.SetBool("Dragging",true);
        if (!isAnswered)
        {
            thisTxt.raycastTarget = false;
            thisTxt.transform.parent = defaultParent;
        }
    }

    public void OnEndDrag(PointerEventData data)
    {
        thisTxt.transform.parent = transform;
        if (!isAnswered)
        {
            thisTxt.raycastTarget = true;
            anim.SetBool("Dragging",false);
        }
        else
        {
            thisTxt.text = "";
        }
    }
}