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

public class LinePosition {
    public int index;
    public List<Vector3> 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
    [SerializeField]
    Slider slider;

    [SerializeField]
    RawImage rawImage;

    private void Awake()
    {
        GetLocalPos();

    }

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

        //相机感光度
        if (InfraredDemo._ins) {
            slider.onValueChanged.AddListener((value) => {
                InfraredDemo._ins.onSliderEvent(value);
            });
            InfraredDemo._ins.onSetSliderValue(slider);
        }
        //slider.onValueChanged.AddListener((value) => {
        //    //onSliderEvent(value);
        //    InfraredDemo._ins.SetBrightness(value);
        //});
        //slider.value = InfraredDemo._ins.brightness.Get();
    }

    void Update()
    {
        if (InfraredDemo.running)
        {
            //渲染相机画面
            rawImage.texture = InfraredDemo.infraredCameraHelper.GetCameraTexture();
            rawImage.material = InfraredDemo.infraredCameraHelper.GetCameraMaterial();
        }
    }


    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<Vector3> screenPositions = new List<Vector3>();
        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 (!ConfirmScreenLocateManual()) return;

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

        if (InfraredDemo.running) {
            //跳转入界面
            AudioMgr.ins.PlayBtn();
            ViewManager2.HideView(ViewManager2.Path_InfraredScreenPositioningView);
            ViewManager2.ShowView(ViewManager2.Path_ConnectGuidanceView);
        }

        //存储一次节点
        SaveLocalPos();
    }

    //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


    List<Vector2> _locatePointList = new();
    float _texWidth;
    float _texHeight;
    void RecordLocatePoint(RectTransform p, Vector2 pivot)
    {
        Vector2 pos = JCUnityLib.RectTransformUtils.GetPositionByPivot(p, pivot);
        pos.x = Mathf.Clamp01(pos.x / Screen.width) * _texWidth;
        pos.y = Mathf.Clamp01(pos.y / Screen.height) * _texHeight;
        _locatePointList.Add(pos);
    }
    bool ConfirmScreenLocateManual()
    {
        if (InfraredDemo.running)
        {
            //渲染截图
            Texture2D texture2D = InfraredDemo.infraredCameraHelper.EnterScreenLocateManual();
            if (texture2D == null)
            {
                InfraredDemo.infraredCameraHelper.QuitScreenLocateManual(null);
                return false;
            }
            _locatePointList.Clear();
            _texWidth = texture2D.width;
            _texHeight = texture2D.height;
            RecordLocatePoint(pos1, new Vector2(0, 0));
            RecordLocatePoint(pos2, new Vector2(1, 0));
            RecordLocatePoint(pos3, new Vector2(1, 1));
            RecordLocatePoint(pos4, new Vector2(0, 1));
            InfraredDemo.infraredCameraHelper.QuitScreenLocateManual(_locatePointList);
            FindObjectOfType<InfraredDemo>().SetLocatePointsToCameraRender(_locatePointList, _texWidth, _texHeight);
            return true;
        }
        return false;
    }


    void SaveLocalPos() {
        List<Vector3> screenPositions = new List<Vector3>();
        screenPositions.Add(pos1.localPosition);
        screenPositions.Add(pos2.localPosition);
        screenPositions.Add(pos3.localPosition);
        screenPositions.Add(pos4.localPosition);
        string saveStr = string.Join(';', screenPositions.Select(v => $"{v.x},{v.y},{v.z}"));
        Debug.Log(saveStr);
        PlayerPrefs.SetString("ScreenPositioningView", saveStr);

    }

    void GetLocalPos() {
        string posListStr = PlayerPrefs.GetString("ScreenPositioningView", "");
        if (!string.IsNullOrWhiteSpace(posListStr))
        {
            List<Vector3> posList = posListStr.Split(';')
                .Select(s =>
                {
                    string[] parts = s.Split(',');
                    return new Vector3(float.Parse(parts[0]), float.Parse(parts[1]), float.Parse(parts[2]));
                })
                .ToList();
            pos1.localPosition = posList[0];
            pos2.localPosition = posList[1];
            pos3.localPosition = posList[2];
            pos4.localPosition = posList[3];
            SetRectanglePoints(linePosConversion(pos1.localPosition, pos2.localPosition, pos3.localPosition, pos4.localPosition));
        }
    }
}