84 lines
3.1 KiB
C#
84 lines
3.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace Umbraco.Core
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{
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public static class DateTimeExtensions
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{
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/// <summary>
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/// Returns the DateTime as an ISO formatted string that is globally expectable
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/// </summary>
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/// <param name="dt"></param>
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/// <returns></returns>
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public static string ToIsoString(this DateTime dt)
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{
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return dt.ToString("yyyy-MM-dd HH:mm:ss");
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}
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public static DateTime TruncateTo(this DateTime dt, DateTruncate truncateTo)
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{
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if (truncateTo == DateTruncate.Year)
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return new DateTime(dt.Year, 1, 1);
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if (truncateTo == DateTruncate.Month)
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return new DateTime(dt.Year, dt.Month, 1);
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if (truncateTo == DateTruncate.Day)
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return new DateTime(dt.Year, dt.Month, dt.Day);
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if (truncateTo == DateTruncate.Hour)
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return new DateTime(dt.Year, dt.Month, dt.Day, dt.Hour, 0, 0);
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if (truncateTo == DateTruncate.Minute)
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return new DateTime(dt.Year, dt.Month, dt.Day, dt.Hour, dt.Minute, 0);
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return new DateTime(dt.Year, dt.Month, dt.Day, dt.Hour, dt.Minute, dt.Second);
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}
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public enum DateTruncate
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{
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Year,
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Month,
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Day,
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Hour,
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Minute,
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Second
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}
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/// <summary>
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/// Calculates the number of minutes from a date time, on a rolling daily basis (so if
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/// date time is before the time, calculate onto next day)
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/// </summary>
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/// <param name="fromDateTime">Date to start from</param>
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/// <param name="scheduledTime">Time to compare against (in Hmm form, e.g. 330, 2200)</param>
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/// <returns></returns>
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public static int PeriodicMinutesFrom(this DateTime fromDateTime, string scheduledTime)
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{
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// Ensure time provided is 4 digits long
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if (scheduledTime.Length == 3)
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{
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scheduledTime = "0" + scheduledTime;
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}
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var scheduledHour = int.Parse(scheduledTime.Substring(0, 2));
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var scheduledMinute = int.Parse(scheduledTime.Substring(2));
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DateTime scheduledDateTime;
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if (IsScheduledInRemainingDay(fromDateTime, scheduledHour, scheduledMinute))
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{
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scheduledDateTime = new DateTime(fromDateTime.Year, fromDateTime.Month, fromDateTime.Day, scheduledHour, scheduledMinute, 0);
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}
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else
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{
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var nextDay = fromDateTime.AddDays(1);
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scheduledDateTime = new DateTime(nextDay.Year, nextDay.Month, nextDay.Day, scheduledHour, scheduledMinute, 0);
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}
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return (int)(scheduledDateTime - fromDateTime).TotalMinutes;
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}
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private static bool IsScheduledInRemainingDay(DateTime fromDateTime, int scheduledHour, int scheduledMinute)
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{
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return scheduledHour > fromDateTime.Hour || (scheduledHour == fromDateTime.Hour && scheduledMinute >= fromDateTime.Minute);
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}
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}
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}
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