using Cysharp.Threading.Tasks.Triggers;
using System;
using System.Collections;
using System.Collections.Generic;
using Unity.Mathematics;
using UnityEngine;

public class TimeCounting : MonoBehaviour
{
    public List<GameObject> numPrefabs;
    public List<GameObject> tempNum;
    public List<Transform> pos;
    private long finishTime = 1705741200;
    private long nowTime;
    private double sum;
    private int hours;
    private int minutes;
    private int seconds;
    private float interval = 1;
    private float intervalTimer = 1;
    private void Start()
    {
        //TimeSpan st = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0);//获取时间戳
        //nowTime = (long)st.TotalMilliseconds;
        //sum = finishTime - nowTime;

        nowTime = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
        sum = finishTime - nowTime;
    }
    private void Update()
    {
        Countdown();
        intervalTimer += Time.deltaTime;
        if(intervalTimer >= interval) InitNumModels();

        //if (Input.GetKeyDown(KeyCode.T))
        //{
        //    Time.timeScale = 0;
        //}
        //if (Input.GetKeyDown(KeyCode.Y))
        //{
        //    Time.timeScale = 1;
        //}
    }
    /// <summary>
    /// 获取倒计时总时长
    /// </summary>
    private void Countdown() 
    {
        sum -= (double)Time.deltaTime;
        DateTime dateTime = DateTimeOffset.FromUnixTimeSeconds((long)sum).DateTime;
        int day = dateTime.Day;
        hours = dateTime.Hour + (day - 1) * 24;
        minutes = dateTime.Minute;
        seconds = dateTime.Second;
        //Debug.Log(day+" //"+hours + "/" + minutes + "/" + seconds);
    }
    private void InitNumModels()
    {
        //清理已生成的数字模型
        for (int i = 0; i < tempNum.Count; i++)
        {
            Destroy(tempNum[i]);
        }
        tempNum.Clear();

        //放置和更新数字模型
        PlaceAndShowNumberPrefabs((hours / 100) % 10, 0);
        PlaceAndShowNumberPrefabs((hours / 10) % 10, 1);
        PlaceAndShowNumberPrefabs((hours % 10), 2);
        PlaceAndShowNumberPrefabs((minutes / 10) % 10, 3);
        PlaceAndShowNumberPrefabs((minutes % 10), 4);
        PlaceAndShowNumberPrefabs((seconds / 10) % 10, 5);
        PlaceAndShowNumberPrefabs((seconds % 10), 6);

        intervalTimer = 0;
    }
    private void PlaceAndShowNumberPrefabs(int num,int posIndex)
    {
        GameObject objOfNum = Instantiate(numPrefabs[num]);
        objOfNum.transform.position = pos[posIndex].position;
        objOfNum.transform.SetParent(this.transform);
        objOfNum.transform.localEulerAngles = Vector3.zero;
        objOfNum.transform.localScale = new Vector3(1, 1, 1);
        objOfNum.SetActive(true);
        tempNum.Add(objOfNum);
    }

}