Wetterdienst

2026-08-23 20:51:19 +02:00
parent cc973418f3
commit 1b32166ce0
21 changed files with 1186 additions and 3 deletions
@@ -36,6 +36,7 @@ public partial class DashboardViewModel : ObservableObject
    private readonly SchoolCalendarSettingsService _calendarSettings;
    private readonly ISubstitutionEntryRepository _substitutions;
    private readonly IAnnualPlanEventRepository? _annualPlanEvents;
+    private readonly SchoolWeatherService? _schoolWeather;

    private const int OpenExcuseMaxAgeDays = 21;
    private const int SupportPlanDueWithinDays = 14;
@@ -56,6 +57,11 @@ public partial class DashboardViewModel : ObservableObject
    [ObservableProperty] private DateOnly _calendarMonth = FirstOfMonth(DateTime.Today);
    [ObservableProperty] private string _selectedDayLabel = "";
    [ObservableProperty] private bool _isDashboardSettingsOpen;
+    [ObservableProperty] private bool _isWeatherPanelVisible;
+    [ObservableProperty] private string _weatherSummary = "";
+    [ObservableProperty] private string _weatherDetails = "";
+    [ObservableProperty] private string _weatherStatus = "";
+    [ObservableProperty] private bool _hasWeatherWarnings;

    public string CalendarMonthLabel => CalendarMonth.ToString("MMMM yyyy", De);

@@ -72,6 +78,7 @@ public partial class DashboardViewModel : ObservableObject
    public ObservableCollection<DashboardAlertItem> Alerts { get; } = [];
    public ObservableCollection<CalendarEventItem> SelectedDayEvents { get; } = [];
    public ObservableCollection<DashboardCardOption> DashboardCards { get; } = [];
+    public ObservableCollection<DashboardWeatherWarningItem> WeatherWarnings { get; } = [];
    public static string[] CalendarWeekdayHeaders { get; } = ["Mo", "Di", "Mi", "Do", "Fr", "Sa", "So"];

    // Navigation-Callback – wird von App.axaml.cs verdrahtet
@@ -111,7 +118,7 @@ public partial class DashboardViewModel : ObservableObject
        DashboardSettingsService dashboardSettings, ISchoolHolidayRepository schoolHolidays,
        PublicHolidayService publicHolidays, SchoolCalendarSettingsService calendarSettings,
        ISubstitutionEntryRepository substitutions, IAnnualPlanEventRepository? annualPlanEvents = null,
-        AnnualPlanSyncService? annualPlanSync = null)
+        AnnualPlanSyncService? annualPlanSync = null, SchoolWeatherService? schoolWeather = null)
    {
        _groups = groups; _subjects = subjects; _lessons = lessons; _exams = exams; _tasks = tasks;
        _examResults = examResults; _grades = grades; _reportGrades = reportGrades; _memberships = memberships;
@@ -122,6 +129,7 @@ public partial class DashboardViewModel : ObservableObject
        _schoolHolidays = schoolHolidays; _publicHolidays = publicHolidays; _calendarSettings = calendarSettings;
        _substitutions = substitutions;
        _annualPlanEvents = annualPlanEvents;
+        _schoolWeather = schoolWeather;
        if (annualPlanSync is not null)
        {
            annualPlanSync.DataChanged += () => Avalonia.Threading.Dispatcher.UIThread.Post(LoadCalendar);
@@ -142,6 +150,7 @@ public partial class DashboardViewModel : ObservableObject
        CurrentDate        = now.ToString("dddd, d. MMMM yyyy", De);
        CurrentSchoolYear  = _sy.CurrentSchoolYear();
        Greeting = now.Hour < 12 ? "Guten Morgen" : now.Hour < 18 ? "Guten Tag" : "Guten Abend";
+        _ = LoadWeatherAsync();

        TodaysLessons.Clear();
        var groups = _groups.GetBySchoolYear(_sy.CurrentSchoolYear()).ToDictionary(g => g.Id);
@@ -197,6 +206,57 @@ public partial class DashboardViewModel : ObservableObject
        LoadAlerts(groups, today);
    }

+    private async Task LoadWeatherAsync()
+    {
+        if (_schoolWeather?.IsAvailable != true) return;
+        try
+        {
+            var snapshot = await _schoolWeather.GetWeatherAsync();
+            if (snapshot is null) return;
+            var current = snapshot.Forecast
+                .Where(x => x.ValidAt.ToUniversalTime() >= DateTime.UtcNow.AddHours(-1))
+                .MinBy(x => Math.Abs((x.ValidAt.ToUniversalTime() - DateTime.UtcNow).TotalMinutes));
+            WeatherWarnings.Clear();
+            foreach (var warning in snapshot.Warnings)
+                WeatherWarnings.Add(new DashboardWeatherWarningItem(warning));
+            HasWeatherWarnings = WeatherWarnings.Count > 0;
+
+            if (current is not null)
+            {
+                var temperature = current.TemperatureC is { } t ? $"{t:0.#} °C" : "Temperatur unbekannt";
+                WeatherSummary = $"{temperature} · {WeatherDescription(current.WeatherCode)}";
+                var details = new List<string>();
+                if (current.WindSpeedKmh is { } wind) details.Add($"Wind {wind:0.#} km/h");
+                if (current.WindGustKmh is { } gust) details.Add($"Böen {gust:0.#} km/h");
+                if (current.PrecipitationMm is > 0) details.Add($"Niederschlag {current.PrecipitationMm:0.#} mm");
+                details.Add($"DWD-Station {snapshot.StationName} ({snapshot.StationDistanceKm:0.#} km)");
+                WeatherDetails = string.Join(" · ", details);
+            }
+            WeatherStatus = snapshot.IsStale
+                ? $"Letzter verfügbarer Stand vom {snapshot.RetrievedAt.ToLocalTime():dd.MM., HH:mm} Uhr"
+                : "";
+            IsWeatherPanelVisible = current is not null || HasWeatherWarnings;
+        }
+        catch (SchoolWeatherException ex)
+        {
+            WeatherStatus = ex.Message;
+            IsWeatherPanelVisible = true;
+        }
+    }
+
+    private static string WeatherDescription(int? code) => code switch
+    {
+        0 => "klar",
+        >= 1 and <= 3 => "bewölkt",
+        45 or 48 => "Nebel",
+        >= 51 and <= 67 => "Regen",
+        >= 71 and <= 77 => "Schnee",
+        >= 80 and <= 82 => "Regenschauer",
+        85 or 86 => "Schneeschauer",
+        >= 95 and <= 99 => "Gewitter",
+        _ => "Wettervorhersage",
+    };
+
    // ── Fehlzeiten-Warnung (5.2.3) ────────────────────────────────────────────

    private void LoadAttendanceWarnings(DateOnly today)
@@ -761,6 +821,32 @@ public partial class DashboardViewModel : ObservableObject
    }
 }

+public sealed class DashboardWeatherWarningItem
+{
+    public string Headline { get; }
+    public string Description { get; }
+    public string Instruction { get; }
+    public string PeriodDisplay { get; }
+    public string SeverityColor { get; }
+
+    public DashboardWeatherWarningItem(WeatherWarning warning)
+    {
+        Headline = string.IsNullOrWhiteSpace(warning.Headline) ? warning.Event : warning.Headline;
+        Description = warning.Description;
+        Instruction = warning.Instruction;
+        PeriodDisplay = (warning.Onset, warning.Expires) switch
+        {
+            ({ } onset, { } expires) => $"{onset.ToLocalTime():dd.MM., HH:mm}–{expires.ToLocalTime():HH:mm} Uhr",
+            ({ } onset, null) => $"ab {onset.ToLocalTime():dd.MM., HH:mm} Uhr",
+            _ => "",
+        };
+        SeverityColor = warning.Severity switch
+        {
+            "Extreme" => "#7E0023", "Severe" => "#D32F2F", "Moderate" => "#F59E0B", _ => "#FDD835",
+        };
+    }
+}
+
 public class LessonItem
 {
    public Guid LessonId { get; set; }