using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using DG.Tweening;

public enum TweenStyle
{
    Once,
    Loop,
    PingPong,
}

public class TweenPosition : MonoBehaviour
{

#if UNITY_EDITOR
    private void Reset()
    {
        from = transform.localPosition;
        to = transform.localPosition;
    }
#endif


    public Vector3 from;
    public Vector3 to;

    public TweenStyle playStyle = TweenStyle.Once;

    public AnimationCurve curve = new AnimationCurve(new Keyframe(0f, 0f, 0f, 1f), new Keyframe(1f, 1f, 1f, 0f));

    public float timer = 1f;

    private Tween tweener = null;

    // Use this for initialization
    void Start()
    {
        PlayForward();
    }

    public void PlayForward()
    {
        ResetToBegining();
        switch (playStyle)
        {
            case TweenStyle.Once:
                tweener = transform.DOLocalMove(to, timer).SetEase(curve);
                break;
            case TweenStyle.Loop:
                tweener = transform.DOLocalMove(to, timer).SetEase(curve).SetLoops(-1);
                break;
            case TweenStyle.PingPong:
                tweener = transform.DOLocalMove(to, timer).SetEase(curve).SetLoops(-1, LoopType.Yoyo);
                break;
        }
    }

    public void PlayReverse()
    {
        ResetToEnding();
        switch (playStyle)
        {
            case TweenStyle.Once:
                tweener = transform.DOLocalMove(from, timer).SetEase(curve);
                break;
            case TweenStyle.Loop:
                tweener = transform.DOLocalMove(from, timer).SetEase(curve).SetLoops(-1);
                break;
            case TweenStyle.PingPong:
                tweener = transform.DOLocalMove(from, timer).SetEase(curve).SetLoops(-1, LoopType.Yoyo);
                break;
        }
    }

    public void Stop()
    {
        if (tweener != null)
        {
            tweener.Kill();
        }
    }

    public void Pause()
    {
        if (tweener != null)
        {
            tweener.Pause();
        }
    }

    public void Play()
    {
        if (tweener != null)
        {
            tweener.Play();
        }
    }

    public void ResetToBegining()
    {
        if (tweener != null)
        {
            tweener.Kill();
        }
        transform.localPosition = from;
    }

    public void ResetToEnding()
    {
        if (tweener != null)
        {
            tweener.Kill();
        }
        transform.localPosition = to;
    }
}