Database migration, repository, controller and service

Models/PaperlessDocument.cs

@@ -0,0 +1,24 @@
+using PaperlessAI.Enums;
+
+namespace PaperlessAI.Models;
+
+public class PaperlessDocument
+{
+    public long Id { get; set; }
+    public long DocumentId { get; set; }
+    public EOperationState DocumentState { get; set; } = EOperationState.Created;
+    public DateTimeOffset CreatedAt { get; set; } = DateTime.UtcNow;
+    public DateTimeOffset ModifiedAt { get; set; } = DateTime.UtcNow;
+
+    public PaperlessDocument(long documentId)
+    {
+        DocumentId = documentId;
+    }
+
+    public static PaperlessDocument Create(long documentId)
+    {
+        var paperlessDocument = new PaperlessDocument(documentId);
+        return paperlessDocument;
+    }
+
+}