using System;
using System.Collections;
using System.IO;
using TMPro;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.Networking;
using UnityEngine.UI;

public class DateManager : MonoBehaviour
{
    private string EndTimer;//结束时间
    private string RecordData;
    public GameObject ui;
    public TextMeshProUGUI text;
    public Button btn;
    private void Awake()
    {
        ui.gameObject.SetActive(false);
        btn.onClick.AddListener(() =>
        {
            Application.Quit();
        });
#if UNITY_WEBGL
        StartCoroutine(WebUpdateTime());
#else
        UpdateTime(DecryptFileReader.ReadAndDecryptData("Timer.txt"), ShowTip, ShowTip, () =>
        {
            gameObject.SetActive(false);
        });
#endif
    }

    public void ShowTip(string str)
    {
        gameObject.SetActive(true);
        ui.SetActive(true);
        text.text = str;
    }

    public IEnumerator WebUpdateTime()
    {
        string path = Path.Combine(Application.streamingAssetsPath, "Timer.txt");
        using (UnityWebRequest request = new UnityWebRequest(path))
        {
            request.downloadHandler = new DownloadHandlerBuffer();
            yield return request.SendWebRequest();
            if (string.IsNullOrEmpty(request.error))
            {
                string datas = DecryptFileReader.ReadAndDecryptData(request.downloadHandler.data);
                UpdateTime(datas, ShowTip, ShowTip, () =>
                {
                    gameObject.SetActive(false);
                });
            }
            else
            {
                Debug.LogError(request.error);
            }
        }
    }

    /// <summary>
    /// 更新系统时间
    /// </summary>
    public void UpdateTime(string datas, UnityAction<string> error = null, UnityAction<string> timeOut = null, UnityAction updateTimer = null)
    {
        try
        {
            EndTimer = datas.Split('|')[0];
            RecordData = datas.Split('|')[1];
            //第一次获取获取系统时间
            DateTime currentDateTime = DateTime.Now;
            string Data = currentDateTime.ToString("yyyy-MM-dd HH:mm:ss");
            if (DateTime.TryParse(RecordData, out DateTime recordDateTime) && DateTime.TryParse(Data, out DateTime nowDateTime))
            {
                if (recordDateTime > nowDateTime)
                {
                    Debug.Log("仿真文件被损坏，请联系管理员进行修复");
                    error?.Invoke("仿真文件被损坏，请联系管理员进行修复");
                }
                else
                {
#if !UNITY_WEBGL
                    //把上一次存储得系统时间更新到最新
                    string timer = "Timer.txt";
                    RecordData = Data;
                    string strMerge = EndTimer + "|" + RecordData;
                    EncryptFileCreator.EncryptAndSaveData(strMerge, timer);
#endif
                    updateTimer?.Invoke();
                }
            }
        }
        catch (Exception e)
        {
            Debug.LogError($"数据出错: {e.Message}");
            error?.Invoke($"数据出错: {e.Message}");
            return;
        }

        if (JudgeExpire())
        {
            Debug.Log("请联系管理员进行升级");
            timeOut?.Invoke("请联系管理员进行升级");
            return;
        }
    }

    /// <summary>
    /// 判断是否到期
    /// </summary>
    /// <returns></returns>
    public bool JudgeExpire()
    {
        if (DateTime.TryParse(EndTimer, out DateTime endDataTime) && DateTime.TryParse(RecordData, out DateTime recordDateTime))
        {
            //结束日期小于目前日期代表到期
            if (endDataTime < recordDateTime)
            {
                return true;
            }
        }
        return false;
    }


    /// <summary>
    /// 给客户打包的时候,需要设置EndTimer,然后运行一次生成文件并注释掉
    /// </summary>
    public void CreatTimer()
    {
        //第一次获取获取系统时间
        DateTime currentDateTime = DateTime.Now;
        RecordData = currentDateTime.ToString("yyyy-MM-dd HH:mm:ss");
        string strMerge = EndTimer + "|" + RecordData;
        EncryptFileCreator.EncryptAndSaveData(strMerge, "Timer.txt");
    }
}