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

public class UntangleDrag : MonoBehaviour, IDragHandler, IBeginDragHandler, IEndDragHandler, IPointerClickHandler
{
    public Text thisTxt;
    public Transform canvasParent;
    public UntangleQuestion.UntangleAnswer thisAnswer;
    public bool isAnswered = false;
    private int gameMode = 0;

    public void Awake()
    {
        canvasParent = GameObject.Find("GameCanvas").transform;
    }
    public void SetupAnswer(UntangleQuestion.UntangleAnswer a, int gM = 0)
    {
        thisAnswer = a;
        gameMode = gM;
        thisTxt.text = thisAnswer.answer;
        thisTxt.raycastTarget = true;
    }

    public void OnPointerClick(PointerEventData data)
    {
        if (gameMode == 1)
        {
            if (UntangleDrop.instance.TestAnswer(this))
            {
                thisTxt.text = "";
                thisTxt.raycastTarget = false;
            }
        }
    }

    public void OnBeginDrag(PointerEventData data)
    {
        if (gameMode == 0)
        {
            if (!isAnswered)
            {
                thisTxt.raycastTarget = false;
                thisTxt.transform.parent = canvasParent;
            }
        }
    }

    public void OnDrag(PointerEventData data)
    {
        if (gameMode  == 0)
        {
            if (!isAnswered)
            {
                thisTxt.transform.position = Vector3.Lerp(thisTxt.transform.position, data.position, 0.15f);
            }
        }
    }

    public void OnEndDrag(PointerEventData data)
    {
        if (gameMode == 0)
        {
            if (isAnswered)
            {
                thisTxt.text = "";
            }
            else
            {
                thisTxt.raycastTarget = true;
            }
            thisTxt.transform.parent = transform;
        }

    }
}