add history handler

EnvelopeGenerator.Application/Common/Notifications/Handlers/DocSignedNotificationHistoryHandler.cs

@@ -0,0 +1,45 @@
+using EnvelopeGenerator.Application.DocStatus.Commands;
+using EnvelopeGenerator.Application.Histories.Commands;
+using EnvelopeGenerator.Domain.Constants;
+using MediatR;
+using Newtonsoft.Json;
+
+namespace EnvelopeGenerator.Application.Common.Notifications.Handlers;
+
+/// <summary>
+/// 
+/// </summary>
+public class DocSignedNotificationHistoryHandler : INotificationHandler<DocSignedNotification>
+{
+    private readonly ISender _sender;
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="sender"></param>
+    public DocSignedNotificationHistoryHandler(ISender sender)
+    {
+        _sender = sender;
+    }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="notification"></param>
+    /// <param name="cancel"></param>
+    /// <returns></returns>
+    public async Task Handle(DocSignedNotification notification, CancellationToken cancel)
+    {
+        if(notification.Receiver is null)
+            if (notification.Receiver is null)
+                throw new InvalidOperationException($"Receiver information is missing in the notification. DocSignedNotification:\n {JsonConvert.SerializeObject(notification, Format.Json.ForDiagnostics)}");
+
+        await _sender.Send(new CreateHistoryCommand()
+        {
+            EnvelopeId = notification.EnvelopeId,
+            UserReference = notification.Receiver.EmailAddress,
+            Status = EnvelopeStatus.DocumentSigned,
+            Comment = JsonConvert.SerializeObject(notification.Annotations, Format.Json.ForAnnotations)
+        }, cancel);
+    }
+}