using System;
using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;
using static DebugTools;
public class DisplayLongitudeAndLatitude : MonoBehaviour
{

    // Start is called before the first frame update
    private Vector3 east = new Vector3(1, 0, 0);//x东
    private Vector3 south = new Vector3(0, 0, -1);//-z南
    private Vector3 west = new Vector3(-1, 0, 0);//-x西
    private Vector3 north = new Vector3(0, 0, 1);//z北

    private Camera cam;
    Vector3 towerCenterPosition = new Vector3(-177.477f, 62.62579f, -73.2408f);//xyz
    Vector3 towerCenterWorldPosition = new Vector3(116.6541536233f, 23.649973126f, 62.62579f);//经纬高程东经和北纬如何和unity里面的米按照固定的比例转换，高程和unity里是一致的
    //一个unity里面的东西，一个现实世界的坐标，2个控制点得到unity里面1米，即现实世界的1米在不考虑地球曲率的时候对应大概多少经纬度
    Vector3 beixiqiaoStoneTabletPosition = new Vector3(-19.4974f, 17.278f, 7.5837f);
    Vector3 beixiqiaoStoneTabletWorldPosition = new Vector3(116.655079685f, 23.650741f, 17.278f);

    private Vector3 ControlPointsDeltaInUnity;
    private Vector3 ControlPointsDeltaInRealWorld;
    private float horizontalUnit;
    private float verticalUnit;

    public TextMeshProUGUI text;

    public DebugTools debugTools; //判断当前帧是否要传感器的数据
    public static string ConvertToDegreesMinutesSeconds(float decimalDegrees, int decimalPlaces = 2)
    {
        // 处理负数
        bool isNegative = decimalDegrees < 0;
        decimalDegrees = Mathf.Abs(decimalDegrees);

        // 提取度
        int degrees = Mathf.FloorToInt(decimalDegrees);

        // 提取分
        float remaining = (decimalDegrees - degrees) * 60;
        int minutes = Mathf.FloorToInt(remaining);

        // 提取秒
        float seconds = (remaining - minutes) * 60;

        // 格式化输出，添加正负号
        string sign = isNegative ? "-" : "";
        return $"{sign}{degrees}°{minutes}'{seconds.ToString("F" + decimalPlaces)}\"";
    }
    void Start()
    {
        debugTools = GameObject.Find("WEB").GetComponent<DebugTools>();
        cam = Camera.main;
        text = GetComponent<TextMeshProUGUI>();
        ControlPointsDeltaInUnity = beixiqiaoStoneTabletPosition - towerCenterPosition;//控制点在unity的差距
        ControlPointsDeltaInRealWorld = beixiqiaoStoneTabletWorldPosition - towerCenterWorldPosition;//控制点在现实世界的差距
        //设计目标转换为多少米每度，先算经度方向，再算纬度方向,计算出来单位之后还是用塔顶点来做距离计算
        horizontalUnit = Math.Abs(ControlPointsDeltaInUnity.x / ControlPointsDeltaInRealWorld.x);
        verticalUnit = Math.Abs(ControlPointsDeltaInUnity.z / ControlPointsDeltaInRealWorld.y);
    }

    // Update is called once per frame
    void Update()
    {
        //float deltaHeight = cam.transform.position.y - towerCenterPosition.y;
        float currentCamElevation = cam.transform.position.y;

        Vector3 deltaBetweenCamAndtowerCenter = cam.transform.position - towerCenterPosition;//这个是unity里面的delta，转化为经纬度，但是高程是没用的，只要看x和z，x为东，z为北
        float horizontalDelta = deltaBetweenCamAndtowerCenter.x / horizontalUnit;
        float verticalDelta = deltaBetweenCamAndtowerCenter.z / verticalUnit;

        float currentCamLongitude = towerCenterWorldPosition.x + horizontalDelta;
        float currentCamLatitude = towerCenterWorldPosition.y + verticalDelta;
        string Longitude = ConvertToDegreesMinutesSeconds(currentCamLongitude);
        string Latitude = ConvertToDegreesMinutesSeconds(currentCamLatitude);
        string outputData = "经度：" + Longitude + "  " + "纬度：" + Latitude + "  " + "高程：" + currentCamElevation.ToString("F2");
        if(!debugTools._isRunning)
        {
            SendData sendData = new SendData();
            sendData.LongitudeAndLatitude = outputData;
            string CoutJsonData = JsonUtility.ToJson(sendData, true);
            Application.ExternalCall("sendDataToVue", CoutJsonData);
        }
        //string outputData = "经度：" + Longitude + "  " + "纬度：" + Latitude ;
        //string outputData = currentCamLongitude.ToString();
        //Debug.Log(outputData);

        text.text = outputData;
    }

    public class SendData
    {
        public string LongitudeAndLatitude;
    }
}