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

public class LinePosition {
    public int index;
    public List<Vector2> pos;
}

public class InfraredScreenPositioningView  : JCUnityLib.ViewBase
{
    [SerializeField]
    RectTransform pos1;
    [SerializeField]
    RectTransform pos2;
    [SerializeField]
    RectTransform pos3;
    [SerializeField]
    RectTransform pos4;
    //画线时候的点偏移量
    [SerializeField]
    int offset = 20;
    [SerializeField]
    Line line;
    List<LinePosition> oldLinePosition;
    Vector3 beginPos;
    Vector3 endPos;


    //相机感光部分
    public Slider slider;

    void Start()
    {
        //记录操作的位置信息
        oldLinePosition = new List<LinePosition>();
        SetLinePos();

        //相机感光度
        slider.onValueChanged.AddListener((value)=> {
            onSliderEvent(value);
        });
        onSetSliderValue();
    }


    public void OnClick_Back()
    {
        AudioMgr.ins.PlayBtn();
        ViewMgr.Instance.DestroyView<InfraredScreenPositioningView>();
    }

    #region 绘制线段部分


    //点击拖拽的开始位置
    public void onBeginPos(int index, Vector3 pos)
    {
        beginPos = pos;
    }
    public void onDragPos(int index, Vector3 pos)
    {
        //设置线段的点
        SetRectanglePoints(linePosConversion(pos1.localPosition, pos2.localPosition, pos3.localPosition, pos4.localPosition));
    }
    //点击拖拽的结束位置
    public void onEndPos(int index, Vector3 pos)
    {
        endPos = pos;
        if (beginPos == endPos) return;

        //Debug.Log(index+",最后的点：" + pos);
        //再记录一次最后的点
        SetLinePos();
    }
    //同步设置图片对应的位置到line
    public void SetLinePos()
    {
        //记录一个操作点的操作位置
        AddOldLinePosition();
        //设置线段的点
        SetRectanglePoints(linePosConversion(pos1.localPosition, pos2.localPosition, pos3.localPosition, pos4.localPosition));
    }

    void AddOldLinePosition()
    {
        //记录一个操作点的操作位置
        List<Vector2> screenPositions = new List<Vector2>();
        screenPositions.Add(pos1.localPosition);
        screenPositions.Add(pos2.localPosition);
        screenPositions.Add(pos3.localPosition);
        screenPositions.Add(pos4.localPosition);
        LinePosition linePosition = new LinePosition();
        linePosition.index = oldLinePosition.Count;
        linePosition.pos = screenPositions;
        oldLinePosition.Add(linePosition);
    }

    List<Vector2> linePosConversion(Vector3 _pos1, Vector3 _pos2, Vector3 _pos3, Vector3 _pos4)
    {
   
        List<Vector2> _screenPositions = new List<Vector2>();
        Vector2 startPos1 = new Vector2(_pos1.x - pos1.rect.width * 0.25f - offset, _pos1.y - pos1.rect.height * 0.25f - offset);
        Vector2 startPos2 = new Vector2(_pos2.x + pos2.rect.width * 0.25f + offset, _pos2.y - pos2.rect.height * 0.25f - offset);
        Vector2 startPos3 = new Vector2(_pos3.x + pos3.rect.width * 0.25f + offset, _pos3.y + pos3.rect.height * 0.25f + offset);
        Vector2 startPos4 = new Vector2(_pos4.x - pos4.rect.width * 0.25f - offset, _pos4.y + pos4.rect.height * 0.25f + offset);
        _screenPositions.Add(startPos1);
        _screenPositions.Add(startPos2);
        _screenPositions.Add(startPos3);
        _screenPositions.Add(startPos4);
        return _screenPositions;
    }
    void SetRectanglePoints(List<Vector2> screenPositions)
    {
        line.SetLine(screenPositions);
    }

    //撤回上一个元素
    public void onRecall()
    {
        // 获取并删除最后一个元素,并且保留一个元素
        if (oldLinePosition.Count > 1) // 确保列表不为空
        {
            // 获取回退的那个元素点
            LinePosition lastElement_second = oldLinePosition[oldLinePosition.Count - 2];
            // 获取最后一个元素
            LinePosition lastElement = oldLinePosition[oldLinePosition.Count - 1];
            //Debug.Log(JsonUtility.ToJson(lastElement) + " = " + oldLinePosition.Count);
            oldLinePosition.RemoveAt(oldLinePosition.Count - 1); // 删除最后一个元素
            pos1.localPosition = lastElement_second.pos[0];
            pos2.localPosition = lastElement_second.pos[1];
            pos3.localPosition = lastElement_second.pos[2];
            pos4.localPosition = lastElement_second.pos[3];
            //设置线段的点
            SetRectanglePoints(linePosConversion(lastElement_second.pos[0], lastElement_second.pos[1], lastElement_second.pos[2], lastElement_second.pos[3]));


        }

    }

    //确认修改
    public void onConfirmation()
    {


        if (oldLinePosition.Count > 1) // 确保列表不为空
        {
            LinePosition lastElement = oldLinePosition[oldLinePosition.Count - 1];
            oldLinePosition.Clear();
            oldLinePosition.Add(lastElement);
        }


    }

    //设置位置
    public void onReset()
    {

        oldLinePosition.Clear();

        int _x = 120, _y = 77;
        pos1.anchoredPosition = new Vector3(_x, _y, 0);
        pos2.anchoredPosition = new Vector3(-_x, _y, 0);
        pos3.anchoredPosition = new Vector3(-_x, -_y, 0);
        pos4.anchoredPosition = new Vector3(_x, -_y, 0);

        //设置一次位置
        SetLinePos();
    }

    #endregion


    #region 相机感光度
    public void onSetSliderValue() {
        slider.value = 5;
    }
    public void onSliderEvent(float value) {
        Debug.Log(value);
    }
    #endregion


}