60 lines
No EOL
1.9 KiB
C#
60 lines
No EOL
1.9 KiB
C#
using System.Globalization;
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namespace ShiftScheduler.Client.Pages;
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public record MonthAndYear(int Month, int Year)
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{
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public static MonthAndYear Current() => new (DateTime.Now.Month, DateTime.Now.Year);
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public static MonthAndYear Next()
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{
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var today = DateTime.Today;
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var nextMonth = today.Month == 12 ? 1 : today.Month + 1;
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var year = today.Month == 12 ? today.Year + 1 : today.Year;
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return new MonthAndYear(nextMonth, year);
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}
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public static string CurrentMonthName => Current().ToDateTime.ToString("MMMM");
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public static string NextMonthName => Next().ToDateTime.ToString("MMMM");
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public string Title => ToDateTime.ToString("MMMM yyyy");
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private DateTime ToDateTime => new DateTime(Year, Month, 1);
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public IReadOnlyList<DateTime> DaysInMonth()
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{
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var dayList = Enumerable.Range(1, DateTime.DaysInMonth(Year, Month))
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.Select(d => new DateTime(Year, Month, d))
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.ToList();
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return EnsureStartsOnMonday(dayList);
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}
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public IReadOnlyDictionary<int, List<DateTime>> GetWeeksInMonth()
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{
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var days = DaysInMonth();
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var weeks = days
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.GroupBy(d => CultureInfo.InvariantCulture.Calendar.GetWeekOfYear(d, CalendarWeekRule.FirstDay, DayOfWeek.Monday))
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.ToDictionary(d => d.Key, d => d.ToList());
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return weeks;
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}
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static List<DateTime> EnsureStartsOnMonday(List<DateTime> dates)
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{
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var firstDate = dates.First();
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if (firstDate.DayOfWeek == DayOfWeek.Monday)
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return dates;
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var result = new List<DateTime>();
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var prependDate = firstDate.AddDays(-1);
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while (prependDate.DayOfWeek != DayOfWeek.Monday)
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{
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result.Insert(0, prependDate);
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prependDate = prependDate.AddDays(-1);
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}
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result.Insert(0, prependDate);
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result.AddRange(dates);
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return result;
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}
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} |