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

public class ObjectTween : MonoBehaviour {

    private delegate void OperationFun();

    public enum Operation
    {
        None,
        rotation,
        ChangeSize,
        FowardCamera,
        RectMoveTo,
        MoveTo,
        ImageAphla,
        ControlOtherMove,
        SizeW,
        WorldMoveTo,
        Shock,
        ShockRate,
    }

    public AnimationCurve[] _AnimationCurves;

    public float durtion = 0;
    public float DelayTime = 0;
    private float startTime = -1;
    private Vector3 OldPosition = Vector3.zero;
    private Vector3 OldEulerAngles = Vector3.zero;


    public Operation[] m_operas;
    public float m_speedX = 1.0f;
    public float m_speedY = 1.0f;
    public float m_speedZ = 1.0f;

    private Vector3 startPos = Vector3.zero;
    public Vector3 destantPos = Vector3.zero;
    public bool isDestroy = true;
    public bool ReSetOnDisable = false;

    public int Axis;  //1X轴 2Y轴 4Z轴
    private int axisX = 1;
    private int axisY = 2;
    private int axisZ = 4;

    private float StartAphla = -1;
    public float ImageEndAphla = 0;
    public Image m_Image;

    private RectTransform m_rect;
    public float StartW;
    public float EndW;

    private bool m_IsOver = false;
    private void OnDisable()
    {
        if (ReSetOnDisable)
            Reset();
    }

    public void Reset()
    {
        startPos = Vector3.zero;
        startTime = -1;
        StartAphla = -1;
        m_rect = null;
        m_IsOver = false;
    }

    private OperationFun m_operaFun = null;
    // Use this for initialization
    void DoAction () {

        for(int i=0;i<m_operas.Length;i++)
        {
            switch (m_operas[i])
            {
                case Operation.rotation:
                    {
                        axisX = axisX & Axis;
                        axisY = axisY & Axis;
                        axisZ = axisZ & Axis;
                        RationSelf();
                        break;
                    }
                case Operation.ChangeSize:
                    {
                        ChangeSizeSelf();
                        break;
                    }
                case Operation.FowardCamera:
                    {
                        FowardCamera();
                        break;
                    }
                case Operation.RectMoveTo:
                    {
                        if (startPos == Vector3.zero)
                        {
                            startPos = transform.localPosition;
                        }

                        RectMoveTo();
                        break;
                    }
                case Operation.MoveTo:
                    {
                        if(startPos == Vector3.zero)
                        {
                            startPos = transform.localPosition;
                        }

                        MoveTo();
                        break;
                    }
                case Operation.WorldMoveTo:
                    {
                        if (startPos == Vector3.zero)
                        {
                            startPos = transform.position;
                        }

                        WorldMoveTo();
                        break;
                    }
                case Operation.ImageAphla:
                    {
                        if (StartAphla == -1)
                        {
                            StartAphla = m_Image.color.a;
                        }

                        ImageColorTween();
                        break;
                    }
                case Operation.SizeW:
                    {
                        if (startTime == 0 || m_rect == null)
                        {
                            startTime = Time.unscaledTime;
                            m_rect = gameObject.GetComponent<RectTransform>();
                        }

                        SizeWFresh();
                        break;
                    }
                case Operation.Shock:
                    {
                        if (startTime == 0)
                        {
                            startTime = Time.unscaledTime + DelayTime;
                        }
                        if(OldPosition == Vector3.zero)
                            OldPosition = transform.localPosition;
                        float timeRate = Time.unscaledTime - startTime;
                        if(timeRate>0)
                        {
                            float rate = timeRate;
                            float x = _AnimationCurves[0].Evaluate(rate);
                            float y = _AnimationCurves[1].Evaluate(rate);
                            float z = _AnimationCurves[2].Evaluate(rate);
                            transform.localPosition = OldPosition + new Vector3(x, y, z);
                        }
                        break;
                    }
                case Operation.ShockRate:
                    {
                        if (startTime == 0)
                        {
                            startTime = Time.unscaledTime + DelayTime;
                        }
                        if (OldEulerAngles == Vector3.zero)
                            OldEulerAngles = transform.localEulerAngles;
                        float timeRate = Time.unscaledTime - startTime;
                        if (timeRate > 0)
                        {
                            float rate = timeRate;
                            float x = _AnimationCurves[0].Evaluate(rate);
                            float y = _AnimationCurves[1].Evaluate(rate);
                            float z = _AnimationCurves[2].Evaluate(rate);
                            transform.localEulerAngles = OldEulerAngles + new Vector3(x, y, z);
                        }
                        break;
                    }
            }
        }

	}
	
	// Update is called once per frame
	void Update () {

        if (startTime > 0 && durtion > 0 && Time.unscaledTime - startTime >= durtion)
        {
            if (m_IsOver == false)
            {
                DoAction();
                m_IsOver = true;
                return;
            }
            m_IsOver = false;
            if (isDestroy)
            {
                gameObject.SetActive(false);
                GameObject.Destroy(gameObject);
            }
            if (OldPosition != Vector3.zero)
                transform.localPosition = OldPosition;
            if (OldEulerAngles != Vector3.zero)
                transform.localEulerAngles = OldEulerAngles;
            OldPosition = Vector3.zero;
            return;
        }

        if(startTime <= 0 && durtion > 0)
        {
            startTime = Time.unscaledTime + DelayTime;
        }

        if (Time.unscaledTime - startTime < 0)
            return;

        DoAction();

    }

    void SizeWFresh()
    {
        if(m_rect!=null)
        {
            Vector2 sizeDelta = m_rect.sizeDelta;
            sizeDelta.x = Mathf.Lerp(StartW, EndW, (Time.unscaledTime - startTime) / durtion);
            m_rect.sizeDelta = sizeDelta;
        }
    }

    void RationSelf()
    {
        transform.Rotate(new Vector3(axisX*m_speedX,axisY*m_speedY, axisZ*m_speedZ));
    }
    void ChangeSizeSelf()
    {
        Projector pro = GetComponentInChildren<Projector>();
        if (pro != null)
            pro.orthographicSize = (transform.localScale.x + transform.localScale.y + transform.localScale.z) / 3;
    }

    void FowardCamera()
    {
        if(Camera.main!=null)
        {
            Vector3 lookAt = new Vector3(Camera.main.transform.position.x, transform.position.y, Camera.main.transform.position.z);
            transform.LookAt(lookAt);
        }
    }

    void RectMoveTo()
    {
        RectTransform rect = transform as RectTransform;
        if(_AnimationCurves.Length>=3)
        {
            float rate = (Time.unscaledTime - startTime) / durtion;
            float x = _AnimationCurves[0].Evaluate(rate);
            float y = _AnimationCurves[1].Evaluate(rate);
            float z = _AnimationCurves[2].Evaluate(rate);
            rect.anchoredPosition = new Vector3(x, y, z);
        }
        else
        {
            if (rect != null)
            {
                rect.anchoredPosition = Vector2.Lerp(rect.anchoredPosition, destantPos, (Time.unscaledTime - startTime) / durtion);
            }
        }
    }

    void MoveTo()
    {
        if (_AnimationCurves.Length >= 3)
        {
            float rate = (Time.unscaledTime - startTime) / durtion;
            float x = _AnimationCurves[0].Evaluate(rate);
            float y = _AnimationCurves[1].Evaluate(rate);
            float z = _AnimationCurves[2].Evaluate(rate);
            transform.localPosition = new Vector3(x, y, z);
        }
        else
        {
            transform.localPosition = Vector3.Lerp(transform.localPosition, destantPos, (Time.unscaledTime - startTime) / durtion);
        }
    }

    void WorldMoveTo()
    {
        if (_AnimationCurves.Length >= 3)
        {
            float rate = (Time.unscaledTime - startTime) / durtion;
            float x = _AnimationCurves[0].Evaluate(rate);
            float y = _AnimationCurves[1].Evaluate(rate);
            float z = _AnimationCurves[2].Evaluate(rate);
            transform.position = new Vector3(x, y, z);
        }
        else
        {
            transform.position = Vector3.Lerp(transform.position, destantPos, (Time.unscaledTime - startTime) / durtion);
        }
    }

    void ImageColorTween()
    {
        if (m_Image == null)
            return;

        if (_AnimationCurves.Length >= 1)
        {
            float rate = (Time.unscaledTime - startTime) / durtion;
            float x = _AnimationCurves[0].Evaluate(rate);
            float y = _AnimationCurves[1].Evaluate(rate);
            float z = _AnimationCurves[2].Evaluate(rate);
            transform.position = new Vector3(x, y, z);
        }
        else if(StartAphla != -1)
        {
            Color newColor = m_Image.color;
            newColor.a = Mathf.Lerp(StartAphla, ImageEndAphla, (Time.unscaledTime - startTime) / durtion);
            m_Image.color = newColor;
        }
    }
}