23 lines
787 B
C#
23 lines
787 B
C#
namespace LehrerApp.Core.Services;
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public class SchoolYearService
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{
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public string CurrentSchoolYear()
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{
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var now = DateTime.Today;
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return FormatSchoolYear(now.Month >= 8 ? now.Year : now.Year - 1);
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}
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public string FormatSchoolYear(int startYear) =>
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$"{startYear}/{(startYear + 1) % 100:D2}";
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public DateOnly SchoolYearStart(string sy) =>
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new(int.Parse(sy.Split('/')[0]), 8, 1);
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public DateOnly SchoolYearEnd(string sy) =>
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new(int.Parse(sy.Split('/')[0]) + 1, 7, 31);
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public List<string> RecentSchoolYears(int count = 5)
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{
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var now = DateTime.Today;
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var cur = now.Month >= 8 ? now.Year : now.Year - 1;
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return Enumerable.Range(0, count).Select(i => FormatSchoolYear(cur - i)).ToList();
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}
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}
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