Range thing.

2026-03-21 00:58:01 +01:00
parent 01f7a09cb7
commit 51fef043ee
45 changed files with 1327 additions and 3753 deletions
@@ -0,0 +1,103 @@
+using System;
+using System.Linq;
+using Wino.Core.Domain.Enums;
+
+namespace Wino.Core.Domain.Models.Calendar;
+
+public static class CalendarRangeResolver
+{
+    public static VisibleDateRange Resolve(CalendarDisplayRequest request, CalendarSettings settings, DateOnly today)
+    {
+        var startDate = GetStartDate(request.DisplayType, request.AnchorDate, settings);
+        var endDate = GetEndDate(request.DisplayType, request.AnchorDate, startDate, settings);
+        var dayCount = endDate.DayNumber - startDate.DayNumber + 1;
+        var dates = Enumerable.Range(0, dayCount)
+                              .Select(offset => startDate.AddDays(offset))
+                              .ToArray();
+
+        return new VisibleDateRange(
+            request.DisplayType,
+            request.AnchorDate,
+            startDate,
+            endDate,
+            request.AnchorDate,
+            dayCount,
+            today >= startDate && today <= endDate,
+            startDate.Year == endDate.Year && startDate.Month == endDate.Month,
+            dates);
+    }
+
+    public static VisibleDateRange ChangeDisplayType(VisibleDateRange currentRange, CalendarDisplayType targetDisplayType, CalendarSettings settings, DateOnly today)
+    {
+        if (currentRange.DisplayType == targetDisplayType)
+        {
+            return currentRange;
+        }
+
+        var anchorDate = currentRange.AnchorDate;
+
+        if (currentRange.DisplayType == CalendarDisplayType.Month)
+        {
+            anchorDate = currentRange.Contains(today) ? today : currentRange.StartDate;
+        }
+
+        return Resolve(new CalendarDisplayRequest(targetDisplayType, anchorDate), settings, today);
+    }
+
+    public static VisibleDateRange Navigate(VisibleDateRange currentRange, int direction, CalendarSettings settings, DateOnly today)
+    {
+        if (direction == 0)
+        {
+            return currentRange;
+        }
+
+        var normalizedDirection = Math.Sign(direction);
+        var anchorDate = currentRange.DisplayType switch
+        {
+            CalendarDisplayType.Day => currentRange.AnchorDate.AddDays(normalizedDirection),
+            CalendarDisplayType.Week => currentRange.AnchorDate.AddDays(7 * normalizedDirection),
+            CalendarDisplayType.WorkWeek => currentRange.AnchorDate.AddDays(7 * normalizedDirection),
+            CalendarDisplayType.Month => currentRange.AnchorDate.AddMonths(normalizedDirection),
+            _ => currentRange.AnchorDate
+        };
+
+        return Resolve(new CalendarDisplayRequest(currentRange.DisplayType, anchorDate), settings, today);
+    }
+
+    private static DateOnly GetStartDate(CalendarDisplayType displayType, DateOnly anchorDate, CalendarSettings settings)
+    {
+        return displayType switch
+        {
+            CalendarDisplayType.Day => anchorDate,
+            CalendarDisplayType.Week => GetStartOfWeek(anchorDate, settings.FirstDayOfWeek),
+            CalendarDisplayType.WorkWeek => GetStartOfWorkWeek(anchorDate, settings),
+            CalendarDisplayType.Month => new DateOnly(anchorDate.Year, anchorDate.Month, 1),
+            _ => anchorDate
+        };
+    }
+
+    private static DateOnly GetEndDate(CalendarDisplayType displayType, DateOnly anchorDate, DateOnly startDate, CalendarSettings settings)
+    {
+        return displayType switch
+        {
+            CalendarDisplayType.Day => anchorDate,
+            CalendarDisplayType.Week => startDate.AddDays(6),
+            CalendarDisplayType.WorkWeek => startDate.AddDays(settings.WorkWeekDayCount - 1),
+            CalendarDisplayType.Month => new DateOnly(anchorDate.Year, anchorDate.Month, DateTime.DaysInMonth(anchorDate.Year, anchorDate.Month)),
+            _ => anchorDate
+        };
+    }
+
+    private static DateOnly GetStartOfWeek(DateOnly date, DayOfWeek firstDayOfWeek)
+    {
+        var offset = ((int)date.DayOfWeek - (int)firstDayOfWeek + 7) % 7;
+        return date.AddDays(-offset);
+    }
+
+    private static DateOnly GetStartOfWorkWeek(DateOnly anchorDate, CalendarSettings settings)
+    {
+        var startOfWeek = GetStartOfWeek(anchorDate, settings.FirstDayOfWeek);
+        var offsetToWorkWeekStart = settings.GetWeekOffset(settings.WorkWeekStart);
+        return startOfWeek.AddDays(offsetToWorkWeekStart);
+    }
+}