refactor(CreateReceiverCommand): add handler

EnvelopeGenerator.Application/Receivers/Commands/CreateReceiverCommand.cs

@@ -1,4 +1,7 @@
-using Microsoft.AspNetCore.Mvc;
+using DigitalData.Core.Abstraction.Application.Repository;
+using EnvelopeGenerator.Domain.Entities;
+using MediatR;
+using Microsoft.AspNetCore.Mvc;
 using System.ComponentModel.DataAnnotations;
 using System.Security.Cryptography;
 using System.Text;
@@ -9,7 +12,7 @@ namespace EnvelopeGenerator.Application.Receivers.Commands;
 /// 
 /// </summary>
 [ApiExplorerSettings(IgnoreApi = true)]
-public record CreateReceiverCommand
+public record CreateReceiverCommand : IRequest<int>
 {
     /// <summary>
     /// 
@@ -43,4 +46,36 @@ public record CreateReceiverCommand
     /// Default value is DateTime.Now
     /// </summary>
     public DateTime AddedWhen { get; } = DateTime.Now;
-};
+};
+
+/// <summary>
+/// 
+/// </summary>
+public class CreateReceiverCommandHandler : IRequestHandler<CreateReceiverCommand, int>
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    private readonly IRepository<Receiver> _repo;
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="repo"></param>
+    public CreateReceiverCommandHandler(IRepository<Receiver> repo)
+    {
+        _repo = repo;
+    }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="request"></param>
+    /// <param name="cancel"></param>
+    /// <returns></returns>
+    public async Task<int> Handle(CreateReceiverCommand request, CancellationToken cancel)
+    {
+        Receiver receiver = await _repo.CreateAsync(request, cancel);
+        return receiver.Id;
+    }
+}