Refactor all code

PyroFetes/Endpoints/Suppliers/GetSupplierEndpoint.cs

@@ -1,5 +1,4 @@
 using FastEndpoints;
-using Microsoft.EntityFrameworkCore;
 using PyroFetes.DTO.Supplier.Response;
 using PyroFetes.Models;
 using PyroFetes.Repositories;
@@ -12,21 +11,19 @@ public class GetSupplierRequest
     public int Id { get; set; }
 }
 
-public class GetSupplierEndpoint(
-    SuppliersRepository suppliersRepository,
-    AutoMapper.IMapper mapper) : Endpoint<GetSupplierRequest, GetSupplierDto>
+public class GetSupplierEndpoint(SuppliersRepository suppliersRepository, AutoMapper.IMapper mapper) : Endpoint<GetSupplierRequest, GetSupplierDto>
 {
     public override void Configure()
     {
-        Get("/suppliers/{@Id}", x => new {x.Id});
+        Get("/suppliers/{@Id}", x => new { x.Id });
         AllowAnonymous();
     }
-    
+
     public override async Task HandleAsync(GetSupplierRequest req, CancellationToken ct)
     {
-        Supplier? supplier = await suppliersRepository.FirstOrDefaultAsync(new GetSupplierByIdSpec(req.Id), ct);
+        Supplier? supplier = await suppliersRepository.SingleOrDefaultAsync(new GetSupplierByIdSpec(req.Id), ct);
 
-        if (supplier == null)
+        if (supplier is null)
         {
             await Send.NotFoundAsync(ct);
             return;