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public enum FixPeriod { None = 0, LastMonth = 1, CurrentMonth = 2, PreLastMonth = 3, CurrentQuarter = 4, LastQuarter = 5, PreLastQuarter = 6, CurrentHalfYear = 7, LastHalfYear = 8, PreLastHalfYear = 9, CurrentYear = 10, LastYear = 11, PreLastYear = 12 } |
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public class FixPeriodFrame { public DateTime StartDate { get; set; } public DateTime EndDate { get; set; } public FixPeriodFrame() { } public FixPeriodFrame(DateTime startDate, DateTime endDate) { this.StartDate = startDate; this.EndDate = endDate; } } |
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public static class FixPeriodExtensions { public static DateTime GetFirstDayOfYear(DateTime date) => new DateTime(date.Year, 1, 1); public static DateTime GetFirstDayOfHalfYearSecondPart(DateTime date) => new DateTime(date.Year, 7, 1); public static DateTime GetLastDayOfHalfYearFirstPart(DateTime date) => GetFirstDayOfHalfYearSecondPart(date).AddMilliseconds(-100); public static DateTime GetLastDayOfYear(DateTime date) => GetFirstDayOfYear(date).AddYears(1).AddMilliseconds(-100); public static FixPeriodFrame GetMonth(DateTime date) => new FixPeriodFrame(new DateTime(date.Year, date.Month, 1), new DateTime(date.Year, date.Month, DateTime.DaysInMonth(date.Year, date.Month), 23, 59, 59)); public static DateTime GetQuarterStartDate(int quarter, int year) => quarter switch { 1 => new DateTime(year, 1, 1), 2 => new DateTime(year, 4, 1), 3 => new DateTime(year, 7, 1), 4 => new DateTime(year, 10, 1), }; public static DateTime GetQuarterEndDate(int quarter, int year) => GetQuarterStartDate(quarter, year).AddMonths(3).AddMilliseconds(-100); public static FixPeriodFrame GetQuarter(DateTime date) { int quarter = (date.Month + 2) / 3; return new FixPeriodFrame(GetQuarterStartDate(quarter, date.Year), GetQuarterEndDate(quarter, date.Year)); } public static FixPeriodFrame GetHalfYear(DateTime date) => (date.Month <= 6) ? new FixPeriodFrame(GetFirstDayOfYear(date), GetLastDayOfHalfYearFirstPart(date)) : new FixPeriodFrame(GetFirstDayOfHalfYearSecondPart(date), GetLastDayOfYear(date)); public static FixPeriodFrame GetYear(DateTime date) => new FixPeriodFrame(GetFirstDayOfYear(date), GetLastDayOfYear(date)); public static FixPeriodFrame ToFixPeriodFrame(this FixPeriod fixPeriod) => fixPeriod switch { FixPeriod.CurrentMonth => GetMonth(DateTime.Now), FixPeriod.LastMonth => GetMonth(DateTime.Now.AddMonths(-1)), FixPeriod.PreLastMonth => GetMonth(DateTime.Now.AddMonths(-2)), FixPeriod.CurrentQuarter => GetQuarter(DateTime.Now), FixPeriod.LastQuarter => GetQuarter(DateTime.Now.AddMonths(-3)), FixPeriod.PreLastQuarter => GetQuarter(DateTime.Now.AddMonths(-6)), FixPeriod.CurrentHalfYear => GetHalfYear(DateTime.Now), FixPeriod.LastHalfYear => GetHalfYear(DateTime.Now.AddMonths(-6)), FixPeriod.PreLastHalfYear => GetHalfYear(DateTime.Now.AddMonths(-12)), FixPeriod.CurrentYear => GetYear(DateTime.Now), FixPeriod.LastYear => GetYear(DateTime.Now.AddYears(-1)), FixPeriod.PreLastYear => GetYear(DateTime.Now.AddYears(-2)), _ => null }; } |
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