Refactor entities: remove preprocessor blocks, unify style

Refactored Envelope, Receiver, and Signature entity classes to eliminate preprocessor directives around class and property definitions. Applied attributes directly and reformatted properties for clarity. Constructors are now always present, with default initializations still conditional where needed. Removed obsolete directives from IHasAddedWho. These changes improve code readability, maintainability, and cross-platform compatibility.

EnvelopeGenerator.Domain/Entities/Envelope.cs

@@ -5,22 +5,16 @@ using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 using EnvelopeGenerator.Domain.Constants;
 using Newtonsoft.Json;
-
 #if NETFRAMEWORK
 using System.Collections.Generic;
 using System.Linq;
 #endif
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-{
-#endif
-
-[Table("TBSIG_ENVELOPE", Schema = "dbo")]
-public class Envelope : IHasAddedWhen, IHasChangedWhen
 {
+    [Table("TBSIG_ENVELOPE", Schema = "dbo")]
+    public class Envelope : IHasAddedWhen, IHasChangedWhen
+    {
         public Envelope()
         {
             // TODO: * Check the Form App and remove the default value
@@ -29,7 +23,7 @@ public class Envelope : IHasAddedWhen, IHasChangedWhen
             Status = EnvelopeStatus.EnvelopeCreated;
             Uuid = Guid.NewGuid().ToString();
             Message = My.Resources.Envelope.Please_read_and_sign_this_document;
-        Title= string.Empty;
+            Title = string.Empty;
             Comment = string.Empty;
             Language = "de-DE";
             SendReminderEmails = false;
@@ -81,7 +75,8 @@ public class Envelope : IHasAddedWhen, IHasChangedWhen
 #if nullable
         ?
 #endif
-        Title { get; set; }
+            Title
+        { get; set; }
 
         [Column("COMMENT", TypeName = "nvarchar(128)")]
         public string Comment { get; set; }
@@ -146,14 +141,16 @@ public class Envelope : IHasAddedWhen, IHasChangedWhen
 #if nullable
         ?
 #endif
-        DocResult { get; set; }
+            DocResult
+        { get; set; }
 
         [ForeignKey("EnvelopeTypeId")]
         public virtual EnvelopeType
 #if nullable
         ?
 #endif
-        Type { get; set; }
+            Type
+        { get; set; }
 
 #if NETFRAMEWORK
         [NotMapped]
@@ -167,21 +164,24 @@ public class Envelope : IHasAddedWhen, IHasChangedWhen
 #if nullable
         ?
 #endif
-        Documents { get; set; }
+            Documents
+        { get; set; }
 
         public List<History>
 #if nullable
         ?
 #endif
-        Histories { get; set; }
+            Histories
+        { get; set; }
 
         public List<EnvelopeReceiver>
 #if nullable
         ?
 #endif
-        EnvelopeReceivers { get; set; }
+            EnvelopeReceivers
+        { get; set; }
 
-//#if NETFRAMEWORK
+        //#if NETFRAMEWORK
         /// <summary>
         /// Validates whether the receiver and document data are complete.
         /// </summary>
@@ -200,9 +200,6 @@ public class Envelope : IHasAddedWhen, IHasChangedWhen
 
             return errors;
         }
-//#endif
+        //#endif
-}
-
-#if NETFRAMEWORK
     }
-#endif
+}

EnvelopeGenerator.Domain/Entities/Receiver.cs

@@ -1,22 +1,16 @@
-using System;
+using EnvelopeGenerator.Domain.Interfaces;
-using EnvelopeGenerator.Domain.Interfaces;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
-using System.Drawing;
 #if NETFRAMEWORK
+using System;
 using System.Collections.Generic;
 #endif
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-{
-#endif
-
-[Table("TBSIG_RECEIVER", Schema = "dbo")]
-public class Receiver : IHasAddedWhen
 {
+    [Table("TBSIG_RECEIVER", Schema = "dbo")]
+    public class Receiver : IHasAddedWhen
+    {
         [Key]
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
         [Column("GUID")]
@@ -44,8 +38,5 @@ public class Receiver : IHasAddedWhen
         public List<EnvelopeReceiver> EnvelopeReceivers { get; set; }
 
         public string GetSignature() => EmailAddress.ToUpperInvariant().GetChecksum();
-}
-
-#if NETFRAMEWORK
     }
-#endif
+}

EnvelopeGenerator.Domain/Entities/Signature.cs

@@ -8,15 +8,10 @@ using System.Collections.Generic;
 #endif
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-{
-#endif
-
-[Table("TBSIG_DOCUMENT_RECEIVER_ELEMENT", Schema = "dbo")]
-public class Signature : ISignature, IHasReceiver, IHasAddedWhen, IHasChangedWhen, IHasChangedWho
 {
+    [Table("TBSIG_DOCUMENT_RECEIVER_ELEMENT", Schema = "dbo")]
+    public class Signature : ISignature, IHasReceiver, IHasAddedWhen, IHasChangedWhen, IHasChangedWho
+    {
         public Signature()
         {
             // TODO: * Check the Form App and remove the default value
@@ -102,7 +97,8 @@ public class Signature : ISignature, IHasReceiver, IHasAddedWhen, IHasChangedWhe
 #if nullable
         ?
 #endif
-        ChangedWho { get; set; }
+            ChangedWho
+        { get; set; }
 
         [ForeignKey("DocumentId")]
         public virtual Document Document { get; set; }
@@ -112,13 +108,15 @@ public class Signature : ISignature, IHasReceiver, IHasAddedWhen, IHasChangedWhe
 #if nullable
         ?
 #endif
-        Receiver { get; set; }
+            Receiver
+        { get; set; }
 
         public virtual IEnumerable<ElementAnnotation>
 #if nullable
         ?
 #endif
-        Annotations { get; set; }
+            Annotations
+        { get; set; }
 
 #if NETFRAMEWORK
         [NotMapped]
@@ -127,8 +125,5 @@ public class Signature : ISignature, IHasReceiver, IHasAddedWhen, IHasChangedWhe
         [NotMapped]
         public double Left => Math.Round(X, 5);
 #endif
-}
-
-#if NETFRAMEWORK
     }
-#endif
+}

EnvelopeGenerator.Domain/Interfaces/IHasAddedWho.cs

@@ -1,7 +1,3 @@
-#if NETFRAMEWORK
-using System;
-#endif
-
 namespace EnvelopeGenerator.Domain.Interfaces
 {
     public interface IHasAddedWho