Testing und interfaces

2026-02-13 09:06:36 +01:00
parent abbce22aa9
commit 352dc42ae7
8 changed files with 846 additions and 166 deletions
--- a/F4SD.Cockpit.Client.Test/Basics/Sevices/TicketOverview/TicketOverviewCountProcessorTest.cs
+++ b/F4SD.Cockpit.Client.Test/Basics/Sevices/TicketOverview/TicketOverviewCountProcessorTest.cs
@@ -0,0 +1,150 @@
+using FasdDesktopUi.Basics.Services.Models;
+
+namespace F4SD.Cockpit.Client.Test.Basics.Sevices.TicketOverview;
+
+public class TicketOverviewCountProcessorTest
+{
+    private static readonly string[] OverviewKeys = ["TicketsNew", "IncidentNew"];
+
+    [Fact]
+    public void Calculate_PersonalScope_UpdatesOnlyPersonalAndReturnsDeltaChanges()
+    {
+        // Arrange
+        Dictionary<string, TileCounts> current = new(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = new TileCounts(1, 7),
+            ["IncidentNew"] = new TileCounts(2, 8)
+        };
+        Dictionary<string, int> incoming = new(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = 5,
+            ["IncidentNew"] = 2
+        };
+
+        // Act
+        ScopeCountProcessingResult result = TicketOverviewCountProcessor.Calculate(
+            current,
+            OverviewKeys,
+            TileScope.Personal,
+            incoming,
+            hasInitializedScope: true);
+
+        // Assert
+        Assert.False(result.IsInitialization);
+        Assert.Equal(5, result.UpdatedCounts["TicketsNew"].Personal);
+        Assert.Equal(7, result.UpdatedCounts["TicketsNew"].Role);
+        Assert.Equal(2, result.UpdatedCounts["IncidentNew"].Personal);
+        Assert.Equal(8, result.UpdatedCounts["IncidentNew"].Role);
+
+        Assert.Single(result.Changes);
+        TileCountChange change = result.Changes[0];
+        Assert.Equal("TicketsNew", change.Key);
+        Assert.Equal(TileScope.Personal, change.Scope);
+        Assert.Equal(1, change.OldCount);
+        Assert.Equal(5, change.NewCount);
+        Assert.Equal(4, change.Delta);
+    }
+
+    [Fact]
+    public void Calculate_RoleScope_UpdatesOnlyRoleAndReturnsDeltaChanges()
+    {
+        // Arrange
+        Dictionary<string, TileCounts> current = new(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = new TileCounts(10, 3),
+            ["IncidentNew"] = new TileCounts(4, 6)
+        };
+        Dictionary<string, int> incoming = new(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = 3,
+            ["IncidentNew"] = 9
+        };
+
+        // Act
+        ScopeCountProcessingResult result = TicketOverviewCountProcessor.Calculate(
+            current,
+            OverviewKeys,
+            TileScope.Role,
+            incoming,
+            hasInitializedScope: true);
+
+        // Assert
+        Assert.False(result.IsInitialization);
+        Assert.Equal(10, result.UpdatedCounts["TicketsNew"].Personal);
+        Assert.Equal(3, result.UpdatedCounts["TicketsNew"].Role);
+        Assert.Equal(4, result.UpdatedCounts["IncidentNew"].Personal);
+        Assert.Equal(9, result.UpdatedCounts["IncidentNew"].Role);
+
+        Assert.Single(result.Changes);
+        TileCountChange change = result.Changes[0];
+        Assert.Equal("IncidentNew", change.Key);
+        Assert.Equal(TileScope.Role, change.Scope);
+        Assert.Equal(6, change.OldCount);
+        Assert.Equal(9, change.NewCount);
+        Assert.Equal(3, change.Delta);
+    }
+
+    [Fact]
+    public void Calculate_FirstInitialization_DoesNotReturnDeltaChanges()
+    {
+        // Arrange
+        Dictionary<string, TileCounts> current = new(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = new TileCounts(0, 0),
+            ["IncidentNew"] = new TileCounts(0, 0)
+        };
+        Dictionary<string, int> incoming = new(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = 4,
+            ["IncidentNew"] = 1
+        };
+
+        // Act
+        ScopeCountProcessingResult result = TicketOverviewCountProcessor.Calculate(
+            current,
+            OverviewKeys,
+            TileScope.Personal,
+            incoming,
+            hasInitializedScope: false);
+
+        // Assert
+        Assert.True(result.IsInitialization);
+        Assert.Empty(result.Changes);
+        Assert.Equal(4, result.UpdatedCounts["TicketsNew"].Personal);
+        Assert.Equal(1, result.UpdatedCounts["IncidentNew"].Personal);
+    }
+
+    [Fact]
+    public void Calculate_MissingIncomingValues_DefaultsToZero()
+    {
+        // Arrange
+        Dictionary<string, TileCounts> current = new(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = new TileCounts(5, 1),
+            ["IncidentNew"] = new TileCounts(2, 4)
+        };
+        Dictionary<string, int> incoming = new(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = 5
+        };
+
+        // Act
+        ScopeCountProcessingResult result = TicketOverviewCountProcessor.Calculate(
+            current,
+            OverviewKeys,
+            TileScope.Personal,
+            incoming,
+            hasInitializedScope: true);
+
+        // Assert
+        Assert.Equal(5, result.UpdatedCounts["TicketsNew"].Personal);
+        Assert.Equal(1, result.UpdatedCounts["TicketsNew"].Role);
+        Assert.Equal(0, result.UpdatedCounts["IncidentNew"].Personal);
+        Assert.Equal(4, result.UpdatedCounts["IncidentNew"].Role);
+
+        Assert.Single(result.Changes);
+        Assert.Equal("IncidentNew", result.Changes[0].Key);
+        Assert.Equal(2, result.Changes[0].OldCount);
+        Assert.Equal(0, result.Changes[0].NewCount);
+    }
+}
--- a/F4SD.Cockpit.Client.Test/Basics/Sevices/TicketOverview/TicketOverviewUpdateServiceTest.cs
+++ b/F4SD.Cockpit.Client.Test/Basics/Sevices/TicketOverview/TicketOverviewUpdateServiceTest.cs
@@ -0,0 +1,243 @@
+using FasdDesktopUi.Basics.Services;
+using FasdDesktopUi.Basics.Services.Models;
+
+namespace F4SD.Cockpit.Client.Test.Basics.Sevices.TicketOverview;
+
+public class TicketOverviewUpdateServiceTest
+{
+    [Fact]
+    public async Task UpdateAvailability_FirstFetch_EmitsInitializationEventsForBothScopes()
+    {
+        // Arrange
+        var communication = new FakeCommunication();
+        communication.SetCounts(TileScope.Personal, new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = 2
+        });
+        communication.SetCounts(TileScope.Role, new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = 5
+        });
+
+        var service = CreateService(communication, out _);
+        var events = new List<TicketOverviewCountsChangedEventArgs>();
+        service.OverviewCountsChanged += (_, args) => events.Add(args);
+
+        // Act
+        service.UpdateAvailability(true);
+        await WaitUntilAsync(() => service.AreAllScopesInitialized);
+
+        // Assert
+        Assert.Equal(2, events.Count);
+        Assert.All(events, e => Assert.Empty(e.Changes));
+        Assert.Contains(events, e => e.InitializedScope == TileScope.Personal);
+        Assert.Contains(events, e => e.InitializedScope == TileScope.Role);
+        Assert.Equal(2, service.CurrentCounts["TicketsNew"].Personal);
+        Assert.Equal(5, service.CurrentCounts["TicketsNew"].Role);
+    }
+
+    [Fact]
+    public async Task FetchAsync_ChangedAndUnchangedCounts_EmitsOnlyRealDeltaEvent()
+    {
+        // Arrange
+        var communication = new FakeCommunication();
+        communication.SetCounts(TileScope.Personal, new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = 1
+        });
+        communication.SetCounts(TileScope.Role, new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = 3
+        });
+
+        var service = CreateService(communication, out _);
+        var events = new List<TicketOverviewCountsChangedEventArgs>();
+        service.OverviewCountsChanged += (_, args) => events.Add(args);
+
+        service.UpdateAvailability(true);
+        await WaitUntilAsync(() => service.AreAllScopesInitialized);
+        events.Clear();
+
+        // Act + Assert (changed)
+        communication.SetCounts(TileScope.Personal, new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = 4
+        });
+        await service.FetchAsync(TileScope.Personal);
+
+        Assert.Single(events);
+        Assert.Single(events[0].Changes);
+        Assert.Equal("TicketsNew", events[0].Changes[0].Key);
+        Assert.Equal(1, events[0].Changes[0].OldCount);
+        Assert.Equal(4, events[0].Changes[0].NewCount);
+        Assert.Equal(3, events[0].Changes[0].Delta);
+
+        // Act + Assert (unchanged)
+        events.Clear();
+        await service.FetchAsync(TileScope.Personal);
+        Assert.Empty(events);
+    }
+
+    [Fact]
+    public async Task Stop_ResetsInitializationAndCounts()
+    {
+        // Arrange
+        var communication = new FakeCommunication();
+        communication.SetCounts(TileScope.Personal, new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase)
+        {
+            ["TicketsNew"] = 7
+        });
+        communication.SetCounts(TileScope.Role, new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase)
+        {
+            ["IncidentNew"] = 9
+        });
+
+        var service = CreateService(communication, out _);
+
+        service.UpdateAvailability(true);
+        await WaitUntilAsync(() => service.AreAllScopesInitialized);
+
+        // Act
+        service.Stop();
+
+        // Assert
+        Assert.False(service.IsScopeInitialized(TileScope.Personal));
+        Assert.False(service.IsScopeInitialized(TileScope.Role));
+        Assert.All(service.CurrentCounts.Values, value =>
+        {
+            Assert.Equal(0, value.Personal);
+            Assert.Equal(0, value.Role);
+        });
+    }
+
+    private static TicketOverviewUpdateService CreateService(FakeCommunication communication, out FakeDispatcher dispatcher)
+    {
+        dispatcher = new FakeDispatcher();
+        var source = new FakeCommunicationSource(communication);
+        var settings = new FakeSettingsProvider();
+        return new TicketOverviewUpdateService(source, dispatcher, settings);
+    }
+
+    private static async Task WaitUntilAsync(Func<bool> condition, int timeoutMs = 2000)
+    {
+        var startedAt = DateTime.UtcNow;
+        while (!condition())
+        {
+            if ((DateTime.UtcNow - startedAt).TotalMilliseconds > timeoutMs)
+            {
+                throw new TimeoutException("Condition was not reached within timeout.");
+            }
+
+            await Task.Delay(10);
+        }
+    }
+
+    private sealed class FakeCommunicationSource : ITicketOverviewCommunicationSource
+    {
+        private readonly ITicketOverviewCommunication _communication;
+
+        public FakeCommunicationSource(ITicketOverviewCommunication communication)
+        {
+            _communication = communication;
+        }
+
+        public ITicketOverviewCommunication Resolve()
+        {
+            return _communication;
+        }
+    }
+
+    private sealed class FakeCommunication : ITicketOverviewCommunication
+    {
+        private Dictionary<string, int> _personalCounts = new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+        private Dictionary<string, int> _roleCounts = new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+
+        public bool IsDemo()
+        {
+            return false;
+        }
+
+        public Task<Dictionary<string, int>> GetTicketOverviewCounts(string[] overviewKeys, bool useRoleScope)
+        {
+            var source = useRoleScope ? _roleCounts : _personalCounts;
+            return Task.FromResult(new Dictionary<string, int>(source, StringComparer.OrdinalIgnoreCase));
+        }
+
+        public void RegisterGeneratedTicket(FasdCockpitCommunicationDemo.DemoTicketRecord record)
+        {
+        }
+
+        public void SetCounts(TileScope scope, Dictionary<string, int> counts)
+        {
+            var copy = counts == null
+                ? new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase)
+                : new Dictionary<string, int>(counts, StringComparer.OrdinalIgnoreCase);
+
+            if (scope == TileScope.Role)
+            {
+                _roleCounts = copy;
+            }
+            else
+            {
+                _personalCounts = copy;
+            }
+        }
+    }
+
+    private sealed class FakeDispatcher : ITicketOverviewDispatcher
+    {
+        public Task InvokeAsync(Action action)
+        {
+            action();
+            return Task.CompletedTask;
+        }
+
+        public Task InvokeAsync(Func<Task> action)
+        {
+            return action();
+        }
+
+        public ITicketOverviewTimer CreateTimer(TimeSpan interval, Action tick)
+        {
+            return new FakeTimer(interval, tick);
+        }
+    }
+
+    private sealed class FakeSettingsProvider : ITicketOverviewSettingsProvider
+    {
+        public int GetPollingMinutes(TileScope scope)
+        {
+            return 1;
+        }
+    }
+
+    private sealed class FakeTimer : ITicketOverviewTimer
+    {
+        private readonly Action _tick;
+
+        public FakeTimer(TimeSpan interval, Action tick)
+        {
+            Interval = interval;
+            _tick = tick;
+        }
+
+        public TimeSpan Interval { get; set; }
+
+        public bool IsEnabled { get; private set; }
+
+        public void Start()
+        {
+            IsEnabled = true;
+        }
+
+        public void Stop()
+        {
+            IsEnabled = false;
+        }
+
+        public void Fire()
+        {
+            _tick?.Invoke();
+        }
+    }
+}
--- a/FasdDesktopUi/Basics/Services/Models/TicketOverviewCommunicationSource.cs
+++ b/FasdDesktopUi/Basics/Services/Models/TicketOverviewCommunicationSource.cs
@@ -0,0 +1,66 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using C4IT.FASD.Cockpit.Communication;
+#if isDemo
+using FasdCockpitCommunicationDemo;
+#endif
+
+namespace FasdDesktopUi.Basics.Services.Models
+{
+    internal interface ITicketOverviewCommunication
+    {
+        bool IsDemo();
+
+        Task<Dictionary<string, int>> GetTicketOverviewCounts(string[] overviewKeys, bool useRoleScope);
+
+#if isDemo
+        void RegisterGeneratedTicket(DemoTicketRecord record);
+#endif
+    }
+
+    internal interface ITicketOverviewCommunicationSource
+    {
+        ITicketOverviewCommunication Resolve();
+    }
+
+    internal sealed class TicketOverviewCommunicationSource : ITicketOverviewCommunicationSource
+    {
+        public ITicketOverviewCommunication Resolve()
+        {
+            var communication = cFasdCockpitCommunicationBase.Instance;
+            return communication == null ? null : new TicketOverviewCommunicationAdapter(communication);
+        }
+    }
+
+    internal sealed class TicketOverviewCommunicationAdapter : ITicketOverviewCommunication
+    {
+        private readonly cFasdCockpitCommunicationBase _communication;
+
+        internal TicketOverviewCommunicationAdapter(cFasdCockpitCommunicationBase communication)
+        {
+            _communication = communication ?? throw new ArgumentNullException(nameof(communication));
+        }
+
+        public bool IsDemo()
+        {
+            return _communication.IsDemo();
+        }
+
+        public async Task<Dictionary<string, int>> GetTicketOverviewCounts(string[] overviewKeys, bool useRoleScope)
+        {
+            var rawCounts = await _communication.GetTicketOverviewCounts(overviewKeys, useRoleScope).ConfigureAwait(false);
+            return rawCounts == null
+                ? new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase)
+                : new Dictionary<string, int>(rawCounts, StringComparer.OrdinalIgnoreCase);
+        }
+
+#if isDemo
+        public void RegisterGeneratedTicket(DemoTicketRecord record)
+        {
+            var demoCommunication = _communication as cFasdCockpitCommunicationDemo;
+            demoCommunication?.RegisterGeneratedTicket(record);
+        }
+#endif
+    }
+}
--- a/FasdDesktopUi/Basics/Services/Models/TicketOverviewCountProcessor.cs
+++ b/FasdDesktopUi/Basics/Services/Models/TicketOverviewCountProcessor.cs
@@ -0,0 +1,79 @@
+using System;
+using System.Collections.Generic;
+
+namespace FasdDesktopUi.Basics.Services.Models
+{
+    internal static class TicketOverviewCountProcessor
+    {
+        internal static ScopeCountProcessingResult Calculate(
+            IReadOnlyDictionary<string, TileCounts> currentCounts,
+            IEnumerable<string> overviewKeys,
+            TileScope scope,
+            IDictionary<string, int> incomingCounts,
+            bool hasInitializedScope)
+        {
+            if (overviewKeys == null)
+                throw new ArgumentNullException(nameof(overviewKeys));
+
+            var updatedCounts = new Dictionary<string, TileCounts>(StringComparer.OrdinalIgnoreCase);
+            if (currentCounts != null)
+            {
+                foreach (var kvp in currentCounts)
+                {
+                    updatedCounts[kvp.Key] = kvp.Value;
+                }
+            }
+
+            var changes = new List<TileCountChange>();
+            foreach (var key in overviewKeys)
+            {
+                var previous = currentCounts != null && currentCounts.TryGetValue(key, out var counts)
+                    ? counts
+                    : TileCounts.Empty;
+                var incoming = incomingCounts != null && incomingCounts.TryGetValue(key, out var value)
+                    ? value
+                    : 0;
+
+                TileCounts updated;
+                int oldValue;
+
+                if (scope == TileScope.Role)
+                {
+                    updated = new TileCounts(previous.Personal, incoming);
+                    oldValue = previous.Role;
+                }
+                else
+                {
+                    updated = new TileCounts(incoming, previous.Role);
+                    oldValue = previous.Personal;
+                }
+
+                updatedCounts[key] = updated;
+
+                if (hasInitializedScope && oldValue != incoming)
+                    changes.Add(new TileCountChange(key, scope, oldValue, incoming));
+            }
+
+            return new ScopeCountProcessingResult(updatedCounts, changes, !hasInitializedScope);
+        }
+    }
+
+    internal sealed class ScopeCountProcessingResult
+    {
+        internal ScopeCountProcessingResult(
+            IReadOnlyDictionary<string, TileCounts> updatedCounts,
+            IReadOnlyList<TileCountChange> changes,
+            bool isInitialization)
+        {
+            UpdatedCounts = updatedCounts ?? throw new ArgumentNullException(nameof(updatedCounts));
+            Changes = changes ?? Array.Empty<TileCountChange>();
+            IsInitialization = isInitialization;
+        }
+
+        internal IReadOnlyDictionary<string, TileCounts> UpdatedCounts { get; }
+
+        internal IReadOnlyList<TileCountChange> Changes { get; }
+
+        internal bool IsInitialization { get; }
+    }
+}
--- a/FasdDesktopUi/Basics/Services/Models/TicketOverviewDispatcher.cs
+++ b/FasdDesktopUi/Basics/Services/Models/TicketOverviewDispatcher.cs
@@ -0,0 +1,83 @@
+using System;
+using System.Threading.Tasks;
+using System.Windows.Threading;
+
+namespace FasdDesktopUi.Basics.Services.Models
+{
+    internal interface ITicketOverviewTimer
+    {
+        TimeSpan Interval { get; set; }
+
+        bool IsEnabled { get; }
+
+        void Start();
+
+        void Stop();
+    }
+
+    internal interface ITicketOverviewDispatcher
+    {
+        Task InvokeAsync(Action action);
+
+        Task InvokeAsync(Func<Task> action);
+
+        ITicketOverviewTimer CreateTimer(TimeSpan interval, Action tick);
+    }
+
+    internal sealed class TicketOverviewDispatcher : ITicketOverviewDispatcher
+    {
+        private readonly Dispatcher _dispatcher;
+
+        internal TicketOverviewDispatcher(Dispatcher dispatcher)
+        {
+            _dispatcher = dispatcher ?? throw new ArgumentNullException(nameof(dispatcher));
+        }
+
+        public Task InvokeAsync(Action action)
+        {
+            return _dispatcher.InvokeAsync(action, DispatcherPriority.Background).Task;
+        }
+
+        public Task InvokeAsync(Func<Task> action)
+        {
+            return _dispatcher.InvokeAsync(action, DispatcherPriority.Background).Task.Unwrap();
+        }
+
+        public ITicketOverviewTimer CreateTimer(TimeSpan interval, Action tick)
+        {
+            var timer = new DispatcherTimer(interval, DispatcherPriority.Background, (sender, args) => tick?.Invoke(), _dispatcher)
+            {
+                IsEnabled = false
+            };
+            return new TicketOverviewTimer(timer);
+        }
+    }
+
+    internal sealed class TicketOverviewTimer : ITicketOverviewTimer
+    {
+        private readonly DispatcherTimer _timer;
+
+        internal TicketOverviewTimer(DispatcherTimer timer)
+        {
+            _timer = timer ?? throw new ArgumentNullException(nameof(timer));
+        }
+
+        public TimeSpan Interval
+        {
+            get => _timer.Interval;
+            set => _timer.Interval = value;
+        }
+
+        public bool IsEnabled => _timer.IsEnabled;
+
+        public void Start()
+        {
+            _timer.Start();
+        }
+
+        public void Stop()
+        {
+            _timer.Stop();
+        }
+    }
+}
--- a/FasdDesktopUi/Basics/Services/Models/TicketOverviewSettingsProvider.cs
+++ b/FasdDesktopUi/Basics/Services/Models/TicketOverviewSettingsProvider.cs
@@ -0,0 +1,43 @@
+using System;
+using System.Diagnostics;
+using C4IT.FASD.Base;
+
+namespace FasdDesktopUi.Basics.Services.Models
+{
+    internal interface ITicketOverviewSettingsProvider
+    {
+        int GetPollingMinutes(TileScope scope);
+    }
+
+    internal sealed class TicketOverviewSettingsProvider : ITicketOverviewSettingsProvider
+    {
+        public int GetPollingMinutes(TileScope scope)
+        {
+            int minutes = scope == TileScope.Role
+                ? cF4sdTicketConfig.DefaultOverviewPollingRole
+                : cF4sdTicketConfig.DefaultOverviewPollingPersonal;
+
+            try
+            {
+                var ticketConfig = cFasdCockpitConfig.Instance?.Global?.TicketConfiguration;
+                if (ticketConfig != null)
+                {
+                    minutes = scope == TileScope.Role
+                        ? ticketConfig.OverviewPollingRole
+                        : ticketConfig.OverviewPollingPersonal;
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"[TicketOverview] Settings fallback to defaults: {ex.Message}");
+            }
+
+            if (minutes < 1)
+            {
+                minutes = 1;
+            }
+
+            return minutes;
+        }
+    }
+}
--- a/FasdDesktopUi/Basics/Services/TicketOverviewUpdateService.cs
+++ b/FasdDesktopUi/Basics/Services/TicketOverviewUpdateService.cs
@@ -1,13 +1,12 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading;
 using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Threading;
-
 using C4IT.FASD.Base;
 using C4IT.FASD.Cockpit.Communication;
-using FasdDesktopUi;
 using FasdDesktopUi.Basics.Models;
 using FasdDesktopUi.Basics.Services.Models;
 #if isDemo
@@ -20,6 +19,9 @@ namespace FasdDesktopUi.Basics.Services
 {
    public sealed class TicketOverviewUpdateService
    {
+        #region Fields
+
+        private readonly ITicketOverviewCommunicationSource _communicationSource;
        private static readonly string[] OverviewKeys = new[]
        {
            "TicketsNew",
@@ -33,15 +35,16 @@ namespace FasdDesktopUi.Basics.Services
            "UnassignedTickets",
            "UnassignedTicketsCritical"
        };
-        private readonly Dispatcher _dispatcher;
+        private readonly ITicketOverviewDispatcher _dispatcher;
+        private readonly ITicketOverviewSettingsProvider _settingsProvider;
        private readonly Dictionary<string, TileCounts> _currentCounts = new Dictionary<string, TileCounts>(StringComparer.OrdinalIgnoreCase);
        private readonly Dictionary<(string Key, bool UseRoleScope), List<cF4sdApiSearchResultRelation>> _demoRelations = new Dictionary<(string, bool), List<cF4sdApiSearchResultRelation>>();
        private readonly HashSet<TileScope> _pendingScopes = new HashSet<TileScope>();
        private readonly HashSet<TileScope> _initializedScopes = new HashSet<TileScope>();
        private readonly object _fetchLock = new object();
        private readonly HashSet<TileScope> _retryScopes = new HashSet<TileScope>();
-        private DispatcherTimer _personalTimer;
-        private DispatcherTimer _roleTimer;
+        private ITicketOverviewTimer _personalTimer;
+        private ITicketOverviewTimer _roleTimer;
        private Task _fetchWorker;
        private bool _retryScheduled;
        private bool _isDemo;
@@ -54,30 +57,53 @@ namespace FasdDesktopUi.Basics.Services
        private readonly HashSet<string> _usedSummaries = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
        private const int SimulationHotkeyDelayMs = 400;
        private int _pendingSimulations;
-        private DispatcherTimer _simulationFlushTimer;
+        private ITicketOverviewTimer _simulationFlushTimer;
 #endif

+        #endregion
+
+        #region Construction and Singleton
+
        private TicketOverviewUpdateService()
+            : this(
+                new TicketOverviewCommunicationSource(),
+                new TicketOverviewDispatcher(Application.Current?.Dispatcher ?? Dispatcher.CurrentDispatcher),
+                new TicketOverviewSettingsProvider())
        {
-            _dispatcher = Application.Current?.Dispatcher ?? Dispatcher.CurrentDispatcher;
+        }
+
+        internal TicketOverviewUpdateService(
+            ITicketOverviewCommunicationSource communicationSource,
+            ITicketOverviewDispatcher dispatcher)
+            : this(communicationSource, dispatcher, new TicketOverviewSettingsProvider())
+        {
+        }
+
+        internal TicketOverviewUpdateService(
+            ITicketOverviewCommunicationSource communicationSource,
+            ITicketOverviewDispatcher dispatcher,
+            ITicketOverviewSettingsProvider settingsProvider)
+        {
+            _communicationSource = communicationSource ?? throw new ArgumentNullException(nameof(communicationSource));
+            _dispatcher = dispatcher ?? throw new ArgumentNullException(nameof(dispatcher));
+            _settingsProvider = settingsProvider ?? throw new ArgumentNullException(nameof(settingsProvider));
            foreach (var key in OverviewKeys)
            {
                _currentCounts[key] = TileCounts.Empty;
            }
 #if isDemo
-            _simulationFlushTimer = new DispatcherTimer(TimeSpan.FromMilliseconds(SimulationHotkeyDelayMs), DispatcherPriority.Background, SimulationFlushTimer_Tick, _dispatcher)
-            {
-                IsEnabled = false
-            };
+            _simulationFlushTimer = _dispatcher.CreateTimer(TimeSpan.FromMilliseconds(SimulationHotkeyDelayMs), SimulationFlushTimer_Tick);
 #endif
        }

-        static TicketOverviewUpdateService()
-        {
-            Instance = new TicketOverviewUpdateService();
-        }
+        private static readonly Lazy<TicketOverviewUpdateService> _instance =
+            new Lazy<TicketOverviewUpdateService>(() => new TicketOverviewUpdateService());

-        public static TicketOverviewUpdateService Instance { get; }
+        public static TicketOverviewUpdateService Instance => _instance.Value;
+
+        #endregion
+
+        #region Public API

        public event EventHandler<TicketOverviewCountsChangedEventArgs> OverviewCountsChanged;

@@ -113,6 +139,10 @@ namespace FasdDesktopUi.Basics.Services
            UpdateAvailability(false);
        }

+        #endregion
+
+        #region Lifecycle
+
        public void UpdateAvailability(bool isEnabled)
        {
            if (isEnabled)
@@ -146,7 +176,7 @@ namespace FasdDesktopUi.Basics.Services
            _isDemo = true;
            LoadPersistedDemoTickets();
 #else
-            _isDemo = cFasdCockpitCommunicationBase.Instance?.IsDemo() == true;
+            _isDemo = _communicationSource.Resolve()?.IsDemo() == true;
 #endif

            InitializeTimers();
@@ -171,7 +201,7 @@ namespace FasdDesktopUi.Basics.Services
                _retryScopes.Clear();
            }

-            _dispatcher.InvokeAsync(() =>
+            _ = _dispatcher.InvokeAsync(() =>
            {
                _personalTimer?.Stop();
                _roleTimer?.Stop();
@@ -185,6 +215,10 @@ namespace FasdDesktopUi.Basics.Services
            });
        }

+        #endregion
+
+        #region Polling and Fetch Pipeline
+
        private void InitializeTimers()
        {
            _personalTimer = CreateScopeTimer(TileScope.Personal);
@@ -194,33 +228,15 @@ namespace FasdDesktopUi.Basics.Services
            _roleTimer?.Start();
        }

-        private DispatcherTimer CreateScopeTimer(TileScope scope)
+        private ITicketOverviewTimer CreateScopeTimer(TileScope scope)
        {
            var interval = GetPollingInterval(scope);
-            var timer = new DispatcherTimer(interval, DispatcherPriority.Background, async (s, e) => await FetchAsync(scope).ConfigureAwait(false), _dispatcher)
-            {
-                IsEnabled = false
-            };
-            return timer;
+            return _dispatcher.CreateTimer(interval, () => _ = FetchAsync(scope));
        }

        private TimeSpan GetPollingInterval(TileScope scope)
        {
-            var ticketConfig = cFasdCockpitConfig.Instance?.Global?.TicketConfiguration;
-            int minutes = scope == TileScope.Role
-                ? cF4sdTicketConfig.DefaultOverviewPollingRole
-                : cF4sdTicketConfig.DefaultOverviewPollingPersonal;
-
-            if (ticketConfig != null)
-            {
-                minutes = scope == TileScope.Role
-                    ? ticketConfig.OverviewPollingRole
-                    : ticketConfig.OverviewPollingPersonal;
-            }
-
-            if (minutes < 1)
-                minutes = 1;
-
+            int minutes = _settingsProvider.GetPollingMinutes(scope);
            return TimeSpan.FromMinutes(minutes);
        }

@@ -291,7 +307,7 @@ namespace FasdDesktopUi.Basics.Services
            if (!_isEnabled)
                return;

-            var communication = cFasdCockpitCommunicationBase.Instance;
+            var communication = _communicationSource.Resolve();
            if (communication == null)
            {
                ScheduleFetchRetry(scope);
@@ -328,9 +344,13 @@ namespace FasdDesktopUi.Basics.Services
            }
        }

+        #endregion
+
+        #region Count Processing
+
        private void RefreshTimerIntervals()
        {
-            _dispatcher.InvokeAsync(() =>
+            _ = _dispatcher.InvokeAsync(() =>
            {
                if (_personalTimer != null)
                    _personalTimer.Interval = GetPollingInterval(TileScope.Personal);
@@ -345,39 +365,26 @@ namespace FasdDesktopUi.Basics.Services
            if (newCounts == null)
                return;

-            var hasInitializedScope = _initializedScopes.Contains(scope);
-            var changes = new List<TileCountChange>();
-
-            foreach (var key in OverviewKeys)
+            bool hasInitializedScope;
+            lock (_fetchLock)
            {
-                var previous = _currentCounts.TryGetValue(key, out var counts) ? counts : TileCounts.Empty;
-                var incoming = newCounts.TryGetValue(key, out var value) ? value : 0;
-
-                TileCounts updated;
-                int oldValue;
-
-                if (scope == TileScope.Role)
-                {
-                    updated = new TileCounts(previous.Personal, incoming);
-                    oldValue = previous.Role;
-                }
-                else
-                {
-                    updated = new TileCounts(incoming, previous.Role);
-                    oldValue = previous.Personal;
+                hasInitializedScope = _initializedScopes.Contains(scope);
            }

-                _currentCounts[key] = updated;
-
-                if (hasInitializedScope && oldValue != incoming)
+            var result = TicketOverviewCountProcessor.Calculate(_currentCounts, OverviewKeys, scope, newCounts, hasInitializedScope);
+            _currentCounts.Clear();
+            foreach (var kvp in result.UpdatedCounts)
            {
-                    changes.Add(new TileCountChange(key, scope, oldValue, incoming));
-                }
+                _currentCounts[kvp.Key] = kvp.Value;
            }

-            if (!hasInitializedScope)
+            if (result.IsInitialization)
+            {
+                lock (_fetchLock)
                {
                    _initializedScopes.Add(scope);
+                }
+
                var initArgs = new TicketOverviewCountsChangedEventArgs(
                    Array.Empty<TileCountChange>(),
                    new Dictionary<string, TileCounts>(_currentCounts, StringComparer.OrdinalIgnoreCase),
@@ -386,16 +393,20 @@ namespace FasdDesktopUi.Basics.Services
                return;
            }

-            if (changes.Count == 0)
+            if (result.Changes.Count == 0)
                return;

-            var args = new TicketOverviewCountsChangedEventArgs(changes, new Dictionary<string, TileCounts>(_currentCounts, StringComparer.OrdinalIgnoreCase));
+            var args = new TicketOverviewCountsChangedEventArgs(result.Changes, new Dictionary<string, TileCounts>(_currentCounts, StringComparer.OrdinalIgnoreCase));
            OverviewCountsChanged?.Invoke(this, args);
        }

+        #endregion
+
+        #region Demo - Public
+
        public void SimulateDemoTicket()
        {
-            _isDemo = cFasdCockpitCommunicationBase.Instance?.IsDemo() == true;
+            _isDemo = _communicationSource.Resolve()?.IsDemo() == true;
            if (!_isDemo)
                return;

@@ -407,7 +418,7 @@ namespace FasdDesktopUi.Basics.Services
                    return;
            }

-            _pendingSimulations++;
+            Interlocked.Increment(ref _pendingSimulations);

            if (_simulationFlushTimer != null)
            {
@@ -417,8 +428,8 @@ namespace FasdDesktopUi.Basics.Services
            }
            else
            {
-                ProcessDemoSimulations(_pendingSimulations);
-                _pendingSimulations = 0;
+                var count = Interlocked.Exchange(ref _pendingSimulations, 0);
+                ProcessDemoSimulations(count);
            }
 #endif
        }
@@ -437,7 +448,11 @@ namespace FasdDesktopUi.Basics.Services
            return Enumerable.Empty<cF4sdApiSearchResultRelation>();
        }

+        #endregion
+
 #if isDemo
+        #region Demo - Internals
+
        private void LoadPersistedDemoTickets()
        {
            var data = TicketOverviewDataStore.LoadData();
@@ -471,11 +486,10 @@ namespace FasdDesktopUi.Basics.Services
            _demoTemplates.AddRange(templates);
        }

-        private void SimulationFlushTimer_Tick(object sender, EventArgs e)
+        private void SimulationFlushTimer_Tick()
        {
            _simulationFlushTimer.Stop();
-            var count = _pendingSimulations;
-            _pendingSimulations = 0;
+            var count = Interlocked.Exchange(ref _pendingSimulations, 0);
            ProcessDemoSimulations(count);
        }

@@ -511,7 +525,9 @@ namespace FasdDesktopUi.Basics.Services
            if (appliedChanges.Count == 0)
                return;

-            var args = new TicketOverviewCountsChangedEventArgs(appliedChanges, new Dictionary<string, TileCounts>(_currentCounts));
+            var args = new TicketOverviewCountsChangedEventArgs(
+                appliedChanges,
+                new Dictionary<string, TileCounts>(_currentCounts, StringComparer.OrdinalIgnoreCase));
            OverviewCountsChanged?.Invoke(this, args);
        }

@@ -611,10 +627,7 @@ namespace FasdDesktopUi.Basics.Services
            if (!string.IsNullOrWhiteSpace(record.Summary))
                _usedSummaries.Add(record.Summary);

-            if (cFasdCockpitCommunicationBase.Instance is cFasdCockpitCommunicationDemo demoCommunication)
-            {
-                demoCommunication.RegisterGeneratedTicket(record);
-            }
+            _communicationSource.Resolve()?.RegisterGeneratedTicket(record);

            if (!_currentCounts.TryGetValue(record.TileKey, out var previousCounts))
                previousCounts = TileCounts.Empty;
@@ -761,22 +774,19 @@ namespace FasdDesktopUi.Basics.Services
            };
        }

+#endregion
 #endif

+        #region Utilities
+
        public Dictionary<string, int> GetCountsForScope(bool useRoleScope)
        {
            return _currentCounts.ToDictionary(kvp => kvp.Key, kvp => useRoleScope ? kvp.Value.Role : kvp.Value.Personal, StringComparer.OrdinalIgnoreCase);
        }

-        private int GetDemoRelationCount(string key, bool useRoleScope)
-        {
-            lock (_demoRelations)
-            {
-                if (_demoRelations.TryGetValue((key, useRoleScope), out var list))
-                    return list.Count;
-            }
-            return 0;
-        }
+        #endregion
+
+        #region Retry Handling

        private void ScheduleFetchRetry(TileScope scope)
        {
@@ -814,7 +824,9 @@ namespace FasdDesktopUi.Basics.Services
                {
                    System.Diagnostics.Debug.WriteLine($"[TicketOverview] Retry scheduling failed: {ex}");
                }
-            }, DispatcherPriority.Background);
+            });
        }
+
+        #endregion
    }
 }
--- a/FasdDesktopUi/F4SD-Cockpit-Client.csproj
+++ b/FasdDesktopUi/F4SD-Cockpit-Client.csproj
@@ -225,6 +225,10 @@
    <Compile Include="Basics\Helper\UiElementHelper.cs" />
    <Compile Include="Basics\HotKeyManager.cs" />
    <Compile Include="Basics\Helper\TrayTicketNotificationManager.cs" />
+    <Compile Include="Basics\Services\Models\TicketOverviewCommunicationSource.cs" />
+    <Compile Include="Basics\Services\Models\TicketOverviewDispatcher.cs" />
+    <Compile Include="Basics\Services\Models\TicketOverviewCountProcessor.cs" />
+    <Compile Include="Basics\Services\Models\TicketOverviewSettingsProvider.cs" />
    <Compile Include="Basics\Services\Models\TicketOverviewCountsChangedEventArgs.cs" />
    <Compile Include="Basics\Services\TicketOverviewUpdateService.cs" />
    <Compile Include="Basics\Models\ConnectionStatusHelper.cs" />