using Apewer.Internals;
using System;
using System.Collections.Generic;
using System.Text;

namespace Apewer
{

    /// <summary>时钟。</summary>
    public class ClockUtility
    {

        /// <summary>表示当前时钟的文本,显示为易于阅读的格式。</summary>
        public static string Lucid
        {
            get { return ClockValue.Current.Lucid; }
        }

        /// <summary>表示当前时钟的文本,显示为连续的数字。</summary>
        public static string Compact
        {
            get { return ClockValue.Current.Compact; }
        }

        /// <summary>获取当前本地时间以秒为单位的时间戳,以 1970-01-01 00:00:00.000 为原点。</summary>
        public static long SecondStamp()
        {
            return ClockHelper.Stamp(new DateTime(1970, 1, 1, 0, 0, 0, 0), false);
        }

        /// <summary>获取指定时间以秒为单位的时间戳,以 1970-01-01 00:00:00.000 为原点。</summary>
        public static long SecondStamp(DateTime datetime)
        {
            return ClockHelper.Stamp(datetime, false);
        }

        /// <summary>获取当前本地时间以毫秒为单位的时间戳,以 1970-01-01 00:00:00.000 为原点。</summary>
        public static long MilliSecondStamp()
        {
            return ClockHelper.Stamp(new DateTime(1970, 1, 1, 0, 0, 0, 0), true);
        }

        /// <summary>获取指定时间以毫秒为单位的时间戳,以 1970-01-01 00:00:00.000 为原点。</summary>
        public static long MilliSecondStamp(DateTime datetime)
        {
            return ClockHelper.Stamp(datetime, true);
        }

        /// <summary>获取 UTC 时间。</summary>
        public static DateTime UtcDateTime
        {
            get { return DateTime.UtcNow; }
        }

        /// <summary>获取 UTC 时间以秒为单位的时间戳,以 1970-01-01 00:00:00.000 为原点。</summary>
        public static long UtcSecondStamp
        {
            get { return ClockHelper.Stamp(DateTime.UtcNow, false); }
        }

        /// <summary>获取 UTC 时间以毫秒为单位的时间戳,以 1970-01-01 00:00:00.000 为原点。</summary>
        public static long UtcMilliSecondStamp
        {
            get { return ClockHelper.Stamp(DateTime.UtcNow, true); }
        }

        /// <summary>获取本地时间。</summary>
        public static DateTime LocalDateTime
        {
            get { return DateTime.Now; }
        }

        /// <summary>获取本地时间以秒为单位的时间戳,以 1970-01-01 00:00:00.000 为原点。</summary>
        public static long LocalSecondStamp
        {
            get { return ClockHelper.Stamp(DateTime.Now, false); }
        }

        /// <summary>获取本地时间以毫秒为单位的时间戳,以 1970-01-01 00:00:00.000 为原点。</summary>
        public static long LocalMilliSecondStamp
        {
            get { return ClockHelper.Stamp(DateTime.Now, true); }
        }

        /// <summary>转换毫秒时间戳到易于阅读的文本。</summary>
        public static string ToLucid(long stamp)
        {
            return ClockValue.Create(stamp).Lucid;
        }

        /// <summary>转换 DateTime 对象到易于阅读的文本。</summary>
        public static string ToLucid(DateTime datetime)
        {
            return ClockValue.Create(datetime).Lucid;
        }

        /// <summary>转换 DateTime 对象到易于阅读的文本。</summary>
        public static string ToLucidDate(DateTime datetime)
        {
            return ClockValue.Create(datetime).LucidDate;
        }

        /// <summary>转换 DateTime 对象到易于阅读的文本。</summary>
        public static string ToLucidTime(DateTime datetime, bool millisconds = false)
        {
            var time = ClockValue.Create(datetime).LucidTime;
            if (!millisconds) time = time.Substring(0, time.Length - 4);
            return time;
        }

        /// <summary>转换毫秒时间戳到紧凑文本。</summary>
        public static string ToCompact(long stamp)
        {
            return ClockValue.Create(stamp).Compact;
        }

        /// <summary>转换 DateTime 对象到紧凑文本。</summary>
        public static string ToCompact(DateTime datetime)
        {
            return ClockValue.Create(datetime).Compact;
        }

        /// <summary>判断闰年。</summary>
        public static bool LeapYear(int year)
        {
            return ClockHelper.LeapYear(year);
        }

        /// <summary>获取指定年月的天数。</summary>
        public static int MonthDays(int year, int month)
        {
            return ClockHelper.MonthDays(year, month);
        }

        /// <summary>尝试获取 DateTime 对象。</summary>
        public static DateTime GetDateTime(Object datetime)
        {
            return ClockHelper.Resolve(datetime);
        }

        /// <summary>尝试获取 DateTime 对象。</summary>
        public static DateTime GetDateTime(string datetime)
        {
            return ClockHelper.Resolve(datetime);
        }

    }

}