52 lines
1.5 KiB
C#
52 lines
1.5 KiB
C#
using System;
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using System.Globalization;
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using JetBrains.Annotations;
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using Robust.Shared.Serialization;
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namespace Content.Server.Holiday.ShouldCelebrate
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{
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/// <summary>
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/// For a holiday that happens the first instance of a weekday on a month.
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/// </summary>
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[UsedImplicitly]
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public class WeekdayInMonth : DefaultHolidayShouldCelebrate, IExposeData
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{
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private DayOfWeek _weekday;
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private uint _occurrence;
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void IExposeData.ExposeData(ObjectSerializer serializer)
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{
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serializer.DataField(ref _weekday, "weekday", DayOfWeek.Monday);
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serializer.DataField(ref _occurrence, "occurrence", 1u);
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}
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public override bool ShouldCelebrate(DateTime date, HolidayPrototype holiday)
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{
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// Not the needed month.
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if (date.Month != (int) holiday.BeginMonth)
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return false;
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// Occurrence NEEDS to be between 1 and 4.
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_occurrence = Math.Max(1, Math.Min(_occurrence, 4));
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var calendar = new GregorianCalendar();
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var d = new DateTime(date.Year, date.Month, 1, calendar);
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for (var i = 1; i <= 7; i++)
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{
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if (d.DayOfWeek != _weekday)
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{
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d = d.AddDays(1);
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continue;
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}
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d = d.AddDays(7 * (_occurrence-1));
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return date.Day == d.Day;
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}
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return false;
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}
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}
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}
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