using SuperMap.RealEstate.Launcher_WinForm;
using System;
using System.Runtime.InteropServices;
using System.Threading;
using System.Windows.Forms;

namespace SuperMap.RealEstate.Launcher
{
    public abstract class LocalTimeHelper
    {
        public static bool SetLocalTime(string value, double seconds = 5)
        {
            string _DateTimeString = System_Extend.ToDecrypt(value);

            if (string.IsNullOrEmpty(_DateTimeString))
                return true;
            DateTime _DateTime = DateTime.Parse(_DateTimeString);
            //测试10分钟误差
            //_DateTime = DateTime.Now.AddMinutes(-10);
            TimeSpan _TimeSpan = _DateTime - DateTime.Now;
            //默认30秒误差
            if (Math.Abs(_TimeSpan.TotalMinutes) > seconds)
            {
                SetLocalTime(_DateTime);
                Thread.Sleep(200);
                Application.DoEvents();
            }
            _TimeSpan = _DateTime - DateTime.Now;
            if (Math.Abs(_TimeSpan.TotalMinutes) > seconds)
            {
                LoadingHelper.ForceExit();
                MessageBox.Show("请确保本地时间与服务器时间的差异在3分钟之内。\r\n" +
                    "目前与服务器时间差异：" + Math.Abs(_TimeSpan.TotalMinutes).ToString("F0") + " 分钟。\r\n" +
                    "服务器时间：" + _DateTimeString  ,"驿商科技", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return false;
            }
            return true;
        }

        #region SetLocalTime
        [DllImport("Kernel32.dll")]
        private static extern bool SetLocalTime(ref SYSTEMTIME lpSystemTime);
        [StructLayout(LayoutKind.Sequential)]
        private struct SYSTEMTIME
        {
            public ushort wYear;
            public ushort wMonth;
            public ushort wDayOfWeek;
            public ushort wDay;
            public ushort wHour;
            public ushort wMinute;
            public ushort wSecond;
            public ushort wMilliseconds;
        }

        private static void SetLocalTime(DateTime date)
        {
            SYSTEMTIME lpTime = new SYSTEMTIME();
            lpTime.wYear = Convert.ToUInt16(date.Year);
            lpTime.wMonth = Convert.ToUInt16(date.Month);
            lpTime.wDayOfWeek = Convert.ToUInt16(date.DayOfWeek);
            lpTime.wDay = Convert.ToUInt16(date.Day);
            lpTime.wHour = Convert.ToUInt16(date.Hour);
            lpTime.wMinute = Convert.ToUInt16(date.Minute);
            lpTime.wSecond = Convert.ToUInt16(date.Second);
            lpTime.wMilliseconds = Convert.ToUInt16(date.Millisecond);
            SetLocalTime(ref lpTime);
        }
        #endregion
    }
}