Refactored endpoints to be more functional and more expressive

PostFundManagement.Api/Endpoints/Communications/GetApplicantInviteEndpoint.cs

@@ -1,9 +1,11 @@
 using PostFundManagement.Application.Extensions;
 using PostFundManagement.Application.Services.Communications;
 using PostFundManagement.Domain.Abstractions;
+using PostFundManagement.Domain.Errors;
 using PostFundManagement.Domain.Extensions;
 using PostFundManagement.Domain.Models;
 using PostFundManagement.Domain.Security;
+using Problems = Microsoft.AspNetCore.Mvc.ProblemDetails;
 
 namespace PostFundManagement.Api.Endpoints.Communications;
 
@@ -14,20 +16,20 @@ public sealed class GetApplicantInviteEndpoint : IEndpoint
     {
         builder.MapGet("api/communications/invites/applicant/{userId:Guid}", async (Guid userId, CommunicationsService service,
             HttpContext context, CancellationToken cancellationToken = default) =>
-        {
-            var result = await service.GetApplicantInviteAsync(userId, cancellationToken);
-
-            return result.IsSuccess
-                ? Results.Ok(result.Value)
-                : Results.NotFound();
-        })
-        .WithDescription("Gets an applicant's invite")
-        .WithName(typeof(GetApplicantInviteEndpoint).ToEndpointName())
-        .MapToApiVersion(new ApiVersion(1))
-        .Produces<Invite>(StatusCodes.Status200OK)        
-        .Produces(StatusCodes.Status404NotFound)
-        .Produces(StatusCodes.Status401Unauthorized)
-        .WithTags(EndpointTags.Communications)
-        .CacheOutput();
+                await service.GetApplicantInviteAsync(userId, cancellationToken) switch
+                {
+                    {  IsSuccess: true, Value: var invite } => Results.Ok(invite),
+                    var r when r.HasError<NotFoundError>() => Results.NotFound(),
+                    var r => Results.InternalServerError(r.Errors.ToProblems()),
+                })
+            .WithDescription("Gets an applicant's invite")
+            .WithName(typeof(GetApplicantInviteEndpoint).ToEndpointName())
+            .MapToApiVersion(new ApiVersion(1))
+            .Produces<Invite>(StatusCodes.Status200OK)        
+            .Produces(StatusCodes.Status404NotFound)
+            .Produces(StatusCodes.Status401Unauthorized)
+            .Produces<Problems>(StatusCodes.Status500InternalServerError)
+            .WithTags(EndpointTags.Communications)
+            .CacheOutput();
     }
 }