init 1.0.0

LehrerApp.Api/PlainEventStore.cs

@@ -0,0 +1,34 @@
+using LehrerApp.Sync.Models;
+
+namespace LehrerApp.Api;
+
+public class PlainEventStore(EventStore eventStore)
+{
+    private static readonly HashSet<string> Allowed =
+        ["Grade", "ExamResult", "WorkTask", "Lesson"];
+
+    public PlainPushResponse Push(string userId, List<PlainSyncEvent> events)
+    {
+        var permitted = events.Where(e => Allowed.Contains(e.EntityType)).ToList();
+        var rejected  = events.Where(e => !Allowed.Contains(e.EntityType))
+                              .Select(e => e.EventId).ToList();
+        if (permitted.Count == 0) return new() { Success = true, RejectedEventIds = rejected };
+
+        var syncEvents = permitted.Select(e => new SyncEvent
+        {
+            EventId = e.EventId, DeviceId = e.DeviceId,
+            DeviceType = DeviceType.Companion,
+            Timestamp = e.Timestamp, SequenceNr = 0,
+            EntityType = e.EntityType, EntityId = e.EntityId,
+            Operation = e.Operation, Payload = e.Payload,
+        }).ToList();
+
+        var result = eventStore.Push(userId, syncEvents);
+        return new()
+        {
+            Success          = result.Success,
+            ServerSequenceNr = result.ServerSequenceNr,
+            RejectedEventIds = [.. result.ConflictingEventIds, .. rejected],
+        };
+    }
+}