ThingsGateway/framework/ThingsGateway.Admin.Core/Extension/SysDateTimeExtensions.cs

#region copyright
//------------------------------------------------------------------------------
//  此代码版权声明为全文件覆盖，如有原作者特别声明，会在下方手动补充
//  此代码版权（除特别声明外的代码）归作者本人Diego所有
//  源代码使用协议遵循本仓库的开源协议及附加协议
//  Gitee源代码仓库：https://gitee.com/diego2098/ThingsGateway
//  Github源代码仓库：https://github.com/kimdiego2098/ThingsGateway
//  使用文档：https://diego2098.gitee.io/thingsgateway-docs/
//  QQ群：605534569
//------------------------------------------------------------------------------
#endregion

using Furion.DependencyInjection;

namespace ThingsGateway.Admin.Core;

/// <summary>
/// 对象拓展
/// </summary>
[SuppressSniffer]
public static class SysDateTimeExtensions
{
    private static readonly DateTime _dt1970 = new(1970, 1, 1);

    /// <summary>
    /// 系统默认使用的当前时间
    /// </summary>
    public static DateTime CurrentDateTime => DateTime.Now;
    /// <summary>
    /// 返回yyyy-MM-dd HH:mm:ss:fff zz时间格式字符串
    /// </summary>
    public static string ToDefaultDateTimeFormat(this in DateTime dt, TimeSpan offset)
    {
        if (dt.Kind == DateTimeKind.Utc)
            return new DateTimeOffset(dt.ToLocalTime(), offset).ToString("yyyy-MM-dd HH:mm:ss:fff zz");
        else if (dt == DateTime.MinValue || dt == DateTime.MaxValue)
            return dt.ToString("yyyy-MM-dd HH:mm:ss:fff zz");
        else
            return new DateTimeOffset(dt, offset).ToString("yyyy-MM-dd HH:mm:ss:fff zz");
    }
    /// <summary>
    /// 返回yyyy-MM-dd HH:mm:ss:fff zz时间格式字符串
    /// </summary>
    public static string ToDefaultDateTimeFormat(this in DateTime dt)
    {
        return dt.ToString("yyyy-MM-dd HH:mm:ss:fff zz");
    }
    /// <summary>
    /// 返回yyyy-MM-dd HH:mm:ss:fff zz时间格式字符串
    /// </summary>
    public static string ToFileDateTimeFormat(this in DateTime dt)
    {
        return dt.ToString("yyyy-MM-dd HH-mm-ss-fff zz");
    }




    /// <summary>
    /// 计算2个时间差，返回文字描述
    /// </summary>
    /// <param name="beginTime">开始时间</param>
    /// <param name="endTime">结束时间</param>
    /// <returns>时间差</returns>
    public static string GetDiffTime(this in DateTime beginTime, in DateTime endTime)
    {
        string strResout = string.Empty;

        //获得2时间的时间间隔秒计算
        TimeSpan span = endTime.Subtract(beginTime);
        int sec = Convert.ToInt32(span.TotalSeconds);
        int minutes = 1 * 60;
        int hours = minutes * 60;
        int day = hours * 24;
        int month = day * 30;
        int year = month * 12;

        //提醒时间,到了返回1,否则返回0
        if (sec > year)
        {
            strResout += (sec / year) + "年";
            sec %= year; //剩余
        }

        if (sec > month)
        {
            strResout += (sec / month) + "月";
            sec %= month;
        }

        if (sec > day)
        {
            strResout += (sec / day) + "天";
            sec %= day;
        }

        if (sec > hours)
        {
            strResout += (sec / hours) + "小时";
            sec %= hours;
        }

        if (sec > minutes)
        {
            strResout += (sec / minutes) + "分";
            sec %= minutes;
        }

        strResout += sec + "秒";
        return strResout;
    }

    /// <summary>
    /// 计算2个时间差，返回文字描述
    /// </summary>
    /// <param name="beginTime">开始时间</param>
    /// <param name="endTime">结束时间</param>
    /// <returns>时间差</returns>
    public static string GetDiffTime(this in DateTimeOffset beginTime, in DateTimeOffset endTime)
    {
        string strResout = string.Empty;

        //获得2时间的时间间隔秒计算
        TimeSpan span = endTime.Subtract(beginTime);
        int sec = Convert.ToInt32(span.TotalSeconds);
        int minutes = 1 * 60;
        int hours = minutes * 60;
        int day = hours * 24;
        int month = day * 30;
        int year = month * 12;

        //提醒时间,到了返回1,否则返回0
        if (sec > year)
        {
            strResout += (sec / year) + "年";
            sec %= year; //剩余
        }

        if (sec > month)
        {
            strResout += (sec / month) + "月";
            sec %= month;
        }

        if (sec > day)
        {
            strResout += (sec / day) + "天";
            sec %= day;
        }

        if (sec > hours)
        {
            strResout += (sec / hours) + "小时";
            sec %= hours;
        }

        if (sec > minutes)
        {
            strResout += (sec / minutes) + "分";
            sec %= minutes;
        }

        strResout += sec + "秒";
        return strResout;
    }


    /// <summary>
    /// ToLong
    /// </summary>
    /// <returns></returns>
    public static long ToLong(this DateTime value, long defaultValue = 0)
    {
        // 特殊处理时间，转Unix毫秒
        if (value == DateTime.MinValue) return 0;

        //// 先转UTC时间再相减，以得到绝对时间差
        //return (Int32)(dt.ToUniversalTime() - _dt1970).TotalSeconds;
        return (Int64)(value - _dt1970).TotalMilliseconds;

    }

}