using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Ant.Service.Utility
{
    public static class DateTimeUtility
    {
        // 时间戳转为C#格式时间
        public static DateTime StampToDateTime(this string timeStamp)
        {
            DateTime dateTimeStart = TimeZone.CurrentTimeZone.ToUniversalTime(new DateTime(1970, 1, 1));
            long lTime = long.Parse(timeStamp + "0000000");
            TimeSpan toNow = new TimeSpan(lTime);

            return dateTimeStart.Add(toNow);
        }

        // DateTime时间格式转换为Unix时间戳格式
        public static int UnixDateTimeToStamp(this System.DateTime time)
        {
            var now = TimeZone.CurrentTimeZone.ToUniversalTime(time);
            System.DateTime startTime = TimeZone.CurrentTimeZone.ToUniversalTime(new System.DateTime(1970, 1, 1));
            return (int)(now - startTime).TotalSeconds;
        }

        /// <summary>
        /// DateTime时间格式转换为Unix时间戳格式
        /// </summary>
        /// <param name="time"> DateTime时间格式</param>
        /// <returns>Unix时间戳格式</returns>
        public static int ConvertDateTimeInt(System.DateTime time)
        {
            System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
            return (int)(time - startTime).TotalSeconds;
        }
        public static DateTime StampToDate(string timeStamp)
        {
            DateTime dateTimeStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
            long lTime = long.Parse(timeStamp + "0000000");
            TimeSpan toNow = new TimeSpan(lTime);
            return dateTimeStart.Add(toNow);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="time"></param>
        /// <returns></returns>
        public static int DateTimeToStamp(this System.DateTime time)
        {
            var now = TimeZone.CurrentTimeZone.ToLocalTime(time);
            System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
            return (int)(now - startTime).TotalSeconds;
        }
        public static UInt32 DateTimeToUInt32(this System.DateTime time)
        {
            var now = TimeZone.CurrentTimeZone.ToUniversalTime(time);
            System.DateTime startTime = TimeZone.CurrentTimeZone.ToUniversalTime(new System.DateTime(1970, 1, 1));
            return (UInt32)(now - startTime).TotalSeconds;
        }


        /// <summary>  
        /// 秒转换小时  
        /// </summary>  
        /// <param name="time"></param>  
        /// <returns></returns>  
        public static string SecondToHour(double time)
        {
            string str = "";
            int hour = 0;
            int minute = 0;
            int second = 0;
            second = Convert.ToInt32(time);

            if (second > 60)
            {
                minute = second / 60;
                second = second % 60;
            }
            if (minute > 60)
            {
                hour = minute / 60;
                minute = minute % 60;
            }
            return (hour + "小时" + minute + "分钟"
                + second + "秒");
        }

        /// <summary>
        /// 两个时间之间差(可以计算到几天几时几分几秒)
        /// </summary>
        /// <param name="date1"></param>
        /// <param name="date2"></param>
        /// <returns></returns>
        public static string DateTimeDifference(DateTime date1, DateTime date2)
        {
            DateTime d1 = date1;
            DateTime d2 = date2;
            TimeSpan d3 = d2.Subtract(d1);
            StringBuilder sbstr = new StringBuilder();
            if (d3.Days > 0)
            {
                sbstr.AppendFormat("{0}天", d3.Days);
            }
            if (d3.Hours > 0)
            {
                sbstr.AppendFormat("{0}小时", d3.Hours);
            }
            if (d3.Minutes > 0)
            {
                sbstr.AppendFormat("{0}分钟", d3.Minutes);
            }
            if (d3.Seconds > 0)
            {
                sbstr.AppendFormat("{0}秒", d3.Seconds);
            }
            return sbstr.ToString();
        }


        /// <summary>  
        /// 秒转换小时  
        /// </summary>  
        /// <param name="time"></param>  
        /// <returns></returns>  
        public static string MinuteToHour(double time)
        {
            string str = "";
            int hour = 0;
            int minute = 0;
            int second = 0;
            minute = Convert.ToInt32(time);

            if (minute > 60)
            {
                hour = minute / 60;
                minute = minute % 60;
            }
            return (hour + "小时" + minute + "分钟");
        }



        /// <summary>  
        /// 把分钟数转化成几小时几分钟（100 -> 01:40）  
        /// </summary>  
        /// <param name="minutes">待转化的分钟数</param>  
        /// <returns>几小时几分钟</returns>  
        public static string ConvertToTime(double minutes)
        {
            int M = 0;//待转化的分钟数；  
            int h = 0;//小时  
            int m = 0;//分钟  


            h = M / 60;
            m = M % 60;

            DateTime time = DateTime.Parse("00:00");
            time = time.AddHours(h).AddMinutes(m);

            string R = time.ToString("HH:mm");
            if (R == "00:00")
            {
                R = ""; ;
            }
            return R;

        }


    }
}