Arbeitszeitnacherfassung

LehrerApp.Desktop/ViewModels/Workload/WorkloadViewModels.cs

@@ -467,6 +467,10 @@ public partial class TimeTrackingViewModel : ObservableObject
     private readonly IWorkTaskRepository _tasks;
     private readonly ITimetableSlotRepository _timetableSlots;
     private readonly PeriodScheduleService _periodSchedule;
+    private readonly ISchoolHolidayRepository? _schoolHolidays;
+    private readonly PublicHolidayService? _publicHolidays;
+    private readonly SchoolCalendarSettingsService? _calendarSettings;
+    private readonly ISubstitutionEntryRepository? _substitutions;
 
     // Nutzer-Feedback: "man beginnt ja auch vermutlich vor 7:50" (erste Stunde) und "wird auch
     // nicht aus dem Unterricht nach Hause rennen" (nach der letzten) - grobe, aber plausible
@@ -474,6 +478,8 @@ public partial class TimeTrackingViewModel : ObservableObject
     // vor, gespeichert wird erst nach ausdrücklicher Bestätigung dort (siehe SuggestTeachingTime).
     private const int BufferBeforeFirstPeriodMinutes = 15;
     private const int BufferAfterLastPeriodMinutes = 10;
+    private const int MissingTeachingTimeLookbackDays = 14;
+    private const int MissingTeachingTimeTodayDelayMinutes = 30;
 
     public const string NoTaskOption = "Keine Aufgabe";
 
@@ -490,6 +496,7 @@ public partial class TimeTrackingViewModel : ObservableObject
 
     public ObservableCollection<TimeEntryListItem> WeekEntries { get; } = [];
     public ObservableCollection<CategoryTimeSummary> CategorySummaries { get; } = [];
+    public ObservableCollection<TeachingTimeGapItem> MissingTeachingTimeEntries { get; } = [];
     public string TotalWeekMinutesDisplay => $"{WeekEntries.Sum(e => e.Model.DurationMinutes)} min diese Woche";
 
     /// Ob heute laut Stundenplan überhaupt Unterricht ansteht - steuert, ob der
@@ -502,14 +509,22 @@ public partial class TimeTrackingViewModel : ObservableObject
     /// im Dialog bleibt aber immer nötig, nichts wird automatisch gespeichert (siehe Puffer-
     /// Konstanten oben).
     public Func<TimeOnly, TimeOnly, Task<TimeEntry?>>? OnSuggestTeachingTime { get; set; }
+    public Func<TeachingTimeGapItem, Task<TimeEntry?>>? OnAddMissingTeachingTime { get; set; }
 
     public TimeTrackingViewModel(ITimeEntryRepository entries, IWorkTaskRepository tasks,
-        ITimetableSlotRepository timetableSlots, PeriodScheduleService periodSchedule)
+        ITimetableSlotRepository timetableSlots, PeriodScheduleService periodSchedule,
+        ISchoolHolidayRepository? schoolHolidays = null, PublicHolidayService? publicHolidays = null,
+        SchoolCalendarSettingsService? calendarSettings = null,
+        ISubstitutionEntryRepository? substitutions = null)
     {
         _entries = entries;
         _tasks = tasks;
         _timetableSlots = timetableSlots;
         _periodSchedule = periodSchedule;
+        _schoolHolidays = schoolHolidays;
+        _publicHolidays = publicHolidays;
+        _calendarSettings = calendarSettings;
+        _substitutions = substitutions;
         Load();
     }
 
@@ -550,6 +565,7 @@ public partial class TimeTrackingViewModel : ObservableObject
                 minutes, maxMinutes > 0 ? minutes / (double)maxMinutes : 0));
         }
 
+        RefreshMissingTeachingTime(today);
         OnPropertyChanged(nameof(TotalWeekMinutesDisplay));
     }
 
@@ -605,6 +621,59 @@ public partial class TimeTrackingViewModel : ObservableObject
         Refresh();
     }
 
+    [RelayCommand]
+    private async Task AddMissingTeachingTime(TeachingTimeGapItem? item)
+    {
+        if (item is null || OnAddMissingTeachingTime is null) return;
+        var result = await OnAddMissingTeachingTime(item);
+        if (result is null) return;
+        _entries.Save(result);
+        Refresh();
+    }
+
+    private void RefreshMissingTeachingTime(DateOnly today)
+    {
+        MissingTeachingTimeEntries.Clear();
+        var firstDay = today.AddDays(-MissingTeachingTimeLookbackDays);
+        var timetableSlots = _timetableSlots.GetAll();
+        var schoolHolidays = _schoolHolidays?.GetAll() ?? [];
+        var publicHolidayDates = _publicHolidays is not null && _calendarSettings is not null
+            ? Enumerable.Range(firstDay.Year, today.Year - firstDay.Year + 1)
+                .SelectMany(y => _publicHolidays.GetHolidays(y, _calendarSettings.State))
+                .Select(h => h.Date).ToHashSet()
+            : [];
+        var nowTime = TimeOnly.FromDateTime(DateTime.Now);
+        var teachingCategory = TaskCategoryDisplay.Label(TaskCategory.Teaching);
+
+        for (var date = firstDay; date <= today; date = date.AddDays(1))
+        {
+            if (publicHolidayDates.Contains(date)
+                || schoolHolidays.Any(h => date >= h.StartDate && date <= h.EndDate))
+                continue;
+
+            var daySlots = timetableSlots.Where(s => s.Weekday == date.DayOfWeek).ToList();
+            if (daySlots.Count == 0) continue;
+
+            var cancelledPeriods = (_substitutions?.GetByDate(date) ?? [])
+                .Where(s => s.Kind == SubstitutionKind.Cancelled)
+                .Select(s => s.PeriodNumber).ToHashSet();
+            var periodTimes = daySlots.Where(s => !cancelledPeriods.Contains(s.PeriodNumber))
+                .Select(s => _periodSchedule.GetTimes(s.PeriodNumber))
+                .Where(t => t is not null).Select(t => t!.Value).ToList();
+            if (periodTimes.Count == 0) continue;
+
+            var lastPeriodEnd = periodTimes.Max(t => t.End);
+            if (date == today && nowTime < lastPeriodEnd.AddMinutes(MissingTeachingTimeTodayDelayMinutes))
+                continue;
+            if (_entries.GetByDate(date).Any(e => e.Category == teachingCategory)) continue;
+
+            MissingTeachingTimeEntries.Add(new TeachingTimeGapItem(
+                date,
+                periodTimes.Min(t => t.Start).AddMinutes(-BufferBeforeFirstPeriodMinutes),
+                lastPeriodEnd.AddMinutes(BufferAfterLastPeriodMinutes)));
+        }
+    }
+
     /// <summary>
     /// Frühester Beginn / spätestes Ende aller heutigen Stundenplan-Perioden (alle Gruppen, nicht
     /// auf eine einzelne beschränkt - der Unterrichtstag als Ganzes), je um die oben definierten
@@ -647,6 +716,17 @@ public class TimeEntryListItem(TimeEntry model, string? taskTitle)
     public string Description => Model.Description ?? "";
 }
 
+public sealed class TeachingTimeGapItem(DateOnly date, TimeOnly windowStart, TimeOnly windowEnd)
+{
+    private static readonly CultureInfo De = new("de-DE");
+
+    public DateOnly Date { get; } = date;
+    public TimeOnly WindowStart { get; } = windowStart;
+    public TimeOnly WindowEnd { get; } = windowEnd;
+    public string DateDisplay { get; } = date.ToString("dddd, dd.MM.", De);
+    public string TimeDisplay { get; } = $"{windowStart:HH:mm}–{windowEnd:HH:mm} Uhr";
+}
+
 public class CategoryTimeSummary(string category, int minutes, double barFraction)
 {
     public string Category { get; } = category;