using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Coolape;

public class CLUIScrollViewWithEvent : UIScrollView
{
    public CLUILoopGrid loopGrid;
    public Vector2 thresholDelta = new Vector2(0, -100);
    bool isShowHead = false;
    bool isPress = false;
    Vector2 totalDelta = Vector2.zero;

    public object showRefreshFlag;
    public object hideRefreshFlag;
    public object doRefresh;

    public void init(object onShowRefreshFlag, object onHideRefreshFlag, object onDoRefresh)
    {
        showRefreshFlag = onShowRefreshFlag;
        hideRefreshFlag = onHideRefreshFlag;
        doRefresh = onDoRefresh;
    }

    // Start is called before the first frame update
    public override void Start()
    {
        base.Start();
        disableDragIfFits = false;

        if (loopGrid == null)
        {
            loopGrid = GetComponent<CLUILoopGrid>();
            if (loopGrid == null)
            {
                loopGrid = GetComponentInChildren<CLUILoopGrid>();
            }
        }

        if (loopGrid != null && Application.isPlaying)
        {
            EventDelegate ed = new EventDelegate();
            ed.target = this;
            ed.methodName = "onShowHeadList";
            loopGrid.OnShowHeadListCallbacks.Add(ed);

            ed = new EventDelegate();
            ed.target = this;
            ed.methodName = "onHideHeadList";
            loopGrid.OnHideHeadListCallbacks.Add(ed);
        }
    }

    public void onShowHeadList(GameObject go)
    {
        isShowHead = true;
        if (isPress)
        {
            Utl.doCallback(showRefreshFlag);
        }
    }
    public void onHideHeadList(GameObject go)
    {
        isShowHead = false;
    }

    public override void Drag(Vector2 delta)
    {
        base.Drag(delta);
        if (isPress && isShowHead)
        {
            totalDelta += delta;
        }
    }

    public override void Press(bool pressed)
    {
        base.Press(pressed);
        isPress = pressed;
        if (isPress)
        {
            totalDelta = Vector2.zero;
            if (isShowHead)
            {
                Utl.doCallback(showRefreshFlag);
            }
        }
        else
        {
            if (isShowHead)
            {
                Debug.Log(totalDelta);
                if ((movement == Movement.Vertical && totalDelta.y <= thresholDelta.y) || (movement == Movement.Horizontal && totalDelta.x >= thresholDelta.x))
                {
                    Utl.doCallback(doRefresh);
                }
                else
                {
                    Utl.doCallback(hideRefreshFlag);
                    if (movement == Movement.Vertical && totalDelta.y <= 0)
                    {
                        ResetPosition();
                    } else if (movement == Movement.Horizontal && totalDelta.x >= 0)
                    {

                    }
                }
            }
            else
            {
                Utl.doCallback(hideRefreshFlag);
                MoveRelative(Vector3.zero);
            }
        }
    }
}