using UnityEngine;
using UnityEngine.EventSystems;
using DG.Tweening;
using static WebInteraction;
using System;

/// <summary>
/// 上帝视角
/// </summary>
[AddComponentMenu("ExtendedFlycam/上帝视角")]
public class ExtendedFlycam : MonoBehaviour
{
    static ExtendedFlycam _inst;

    public static ExtendedFlycam Inst
    {
        get
        {
            if (_inst == null)
            {
                _inst = new ExtendedFlycam();
            }
            return _inst;
        }
    }

    public float cameraSensitivity = 90;

    public float climbSpeed = 4;

    public float normalMoveSpeed = 10;

    public float slowMoveFactor = 0.25f;

    public float fastMoveFactor = 3;

    /// <summary>
    /// 旋转X增量
    /// </summary>
    [HideInInspector] public float rotationX = 0.0f;
    /// <summary>
    /// 旋转Y增量
    /// </summary>
    [HideInInspector] public float rotationY = 0.0f;

    private Vector3 previousMousePosition;
    public Vector3 initialRotationEulerAngles; // 保存初始角度

    public bool isvalid = true;

    private void Awake()
    {
        _inst = this;
        previousMousePosition = Input.mousePosition;
        BoolMonitor.ValueChanged += BoolMonitor_ValueChanged;

    }

    //检测bool是否变化
    private static void BoolMonitor_ValueChanged(object sender, EventArgs e)
    {
        Debug.Log("当前bool" + BoolMonitor.Value);
        if (!BoolMonitor.Value)
        {
            if (!string.IsNullOrEmpty(WebInteraction.Inst.current_videoNumber) && WebInteraction.Inst.isVideoPlay)
                WebInteraction.Inst.CloseVideo(WebInteraction.Inst.current_videoNumber);
        }
    }

    private Transform cameraTransform;
    private Vector3 lastPosition;
    private Quaternion lastRotation;
    void Start()
    {
        Cursor.visible = true;
        //initialRotationEulerAngles = transform.localEulerAngles;
        // 获取相机的Transform组件
        cameraTransform = GetComponent<Transform>();

        // 初始化上一帧的位置和旋转
        lastPosition = cameraTransform.position;
        lastRotation = cameraTransform.rotation;
    }

    private void OnEnable()
    {
        transform.rotation = Quaternion.Euler(initialRotationEulerAngles);
    }


    public bool HasMouseMoved()
    {
        float mouseX = Input.GetAxisRaw("Mouse X");
        float mouseY = Input.GetAxisRaw("Mouse Y");

        if (mouseX != 0 || mouseY != 0)
        {
            previousMousePosition = Input.mousePosition;
            return true;
        }

        return false;
    }
    Vector3 ClampAngle(float x, float y, float z, Vector3 v)
    {
        if (x <= -360)
            x += 360;
        if (x >= 360)
            x -= 360;

        if (y <= -360)
            y += 360;
        if (y >= 360)
            y -= 360;

        if (z <= -360)
            z += 360;
        if (z >= 360)
            z -= 360;
        v.Set(x, y, z);
        return v;
    }

    //检测相机是否移动
    public bool ismove()
    {
        // 检查当前帧的位置和旋转是否与上一帧不同
        if (cameraTransform.position != lastPosition || cameraTransform.rotation != lastRotation)
        {
            // 相机移动了，可以在这里执行相应的操作
            //Debug.Log("相机移动了"+ BoolMonitor.Value);

            // 更新上一帧的位置和旋转
            lastPosition = cameraTransform.position;
            lastRotation = cameraTransform.rotation;
            return false;
        }
        return true;
    }

    public void setisvalid(bool b)
    {
        isvalid = b;
    }

    void Update()
    {
        BoolMonitor.Value = ismove();

        if (!isvalid)
        {
            return;
        }
        //initialRotationEulerAngles = transform.localEulerAngles;
        if (Input.GetMouseButton(1))
        {
            if (HasMouseMoved())
            {
                // 累加旋转增量
                rotationX += Input.GetAxis("Mouse X") * cameraSensitivity;
                rotationY += Input.GetAxis("Mouse Y") * cameraSensitivity;
                rotationY = Mathf.Clamp(rotationY, -90, 90);
                //Debug.Log(rotationX + "\n" + rotationX);
                // 从initialRotationEulerAngles开始旋转，然后添加旋转增量。

                Vector3 rotation = initialRotationEulerAngles + new Vector3(-rotationY, -rotationX, 0);
                transform.localRotation = Quaternion.Euler(rotation);
                //transform.localEulerAngles = rotation;
            }
        }

        if (Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift))
        {
            //GetComponent<ImageEffect_GaussianBlur>().enabled = true;
            transform.position += transform.forward * (normalMoveSpeed * fastMoveFactor) * Input.GetAxis("Vertical") * Time.deltaTime;
            transform.position += transform.right * (normalMoveSpeed * fastMoveFactor) * Input.GetAxis("Horizontal") * Time.deltaTime;
        }
        else if (Input.GetKey(KeyCode.LeftControl) || Input.GetKey(KeyCode.RightControl))
        {
            transform.position += transform.forward * (normalMoveSpeed * slowMoveFactor) * Input.GetAxis("Vertical") * Time.deltaTime;
            transform.position += transform.right * (normalMoveSpeed * slowMoveFactor) * Input.GetAxis("Horizontal") * Time.deltaTime;
        }
        else
        {
            transform.position += transform.forward * normalMoveSpeed * Input.GetAxis("Vertical") * Time.deltaTime;
            transform.position += transform.right * normalMoveSpeed * Input.GetAxis("Horizontal") * Time.deltaTime;
        }

        if (!EventSystem.current.IsPointerOverGameObject())
        {
            if (Input.GetAxis("Mouse ScrollWheel") < 0)
            {
                //transform.position += transform.up * climbSpeed * Time.deltaTime*100; 
                if (GetComponent<Camera>().fieldOfView >= 60)
                {
                    GetComponent<Camera>().fieldOfView = 60;
                    return;
                }
                GetComponent<Camera>().fieldOfView += Time.deltaTime * 100;
            }
            if (Input.GetAxis("Mouse ScrollWheel") > 0)
            {
                //transform.position -= transform.up * climbSpeed * Time.deltaTime*100;
                if (GetComponent<Camera>().fieldOfView <= 10)
                {
                    GetComponent<Camera>().fieldOfView = 10;
                    return;
                }
                GetComponent<Camera>().fieldOfView -= Time.deltaTime * 100;
            }
        }
        if (Input.GetKeyDown(KeyCode.End))
        {
            Cursor.visible = (Cursor.visible == true) ? false : true;
        }
    }

    /// <summary>
    /// 重置相机角度初始增量
    /// </summary>
    public void init_mainCamera_rot()
    {
        rotationX = 0;
        rotationY = 0;
    }

    public void vvvv()
    {
        {
            Inst.init_mainCamera_rot();
            Inst.transform.DOLocalMove(new Vector3(4.7f, 20.2f, -18.3f), 1);
            Inst.transform.DORotateQuaternion(Quaternion.Euler(Inst.ClampAngle(62.856f, -0.314f, 0.033f, Vector3.zero)), 1f).OnComplete(() =>
            {
                //更新相机初始旋转角度
                Inst.initialRotationEulerAngles = new Vector3(62.856f, -0.314f, 0.033f);
            });
        }

    }

    public void OnDestroy()
    {
        // 停止并清除所有DOTween动画
        transform.DOKill();

        // 清除DOTween Tweener和Sequence缓存
        DOTween.Clear(true);
    }

    float GetLimitedAngle(float angle)
    {
        // 将角度转换为在 0-360 范围内
        angle %= 360f;

        // 处理负数角度
        if (angle < 0f)
        {
            angle += 360f;
        }

        return angle;
    }
}