feat(notification): implement handler to remove document result on signature removal

EnvelopeGenerator.Application/Common/Notifications/RemoveSignature/Handlers/RemoveDocResult.cs

@@ -0,0 +1,47 @@
+using DigitalData.Core.Abstraction.Application.Repository;
+using EnvelopeGenerator.Domain.Entities;
+using MediatR;
+
+namespace EnvelopeGenerator.Application.Common.Notifications.RemoveSignature.Handlers;
+
+/// <summary>
+/// 
+/// </summary>
+public class RemoveDocResult : INotificationHandler<RemoveSignatureNotification>
+{
+    private readonly IRepository<Envelope> _repo;
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="repository"></param>
+    public RemoveDocResult(IRepository<Envelope> repository)
+    {
+        _repo = repository;
+    }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="notification"></param>
+    /// <param name="cancel"></param>
+    /// <returns></returns>
+    public Task Handle(RemoveSignatureNotification notification, CancellationToken cancel)
+    {
+        if(notification.EnvelopeId is null && notification.EnvelopeUuid is null)
+            return Task.CompletedTask;
+
+        return _repo.UpdateAsync(
+            envelope => envelope.DocResult = null,
+            query => {
+                if (notification.EnvelopeId is int envelopeId)
+                    query = query.Where(envelope => envelope.Id == envelopeId);
+
+                if (notification.EnvelopeUuid is string uuid)
+                    query = query.Where(envelope => envelope.Uuid == uuid);
+
+                return query;
+            }, cancel);
+
+    }
+}