Refactor profile handling and error management

- Updated `ProfileController` to always return `Ok(profile)` instead of `NotFound()`.
- Changed `ReadProfileQuery` to return a non-nullable `ProfileDto`, throwing `NotFoundException` if not found.
- Modified `ReadProfileHandler` to handle the new return type and throw exceptions appropriately.
- Adjusted `ReadProfileAsync` to align with the new non-nullable return type.
- Added dependency on `DigitalData.Core.Exceptions` for improved error handling.

src/WorkFlow.API/Controllers/ProfileController.cs

@@ -32,6 +32,6 @@ public class ProfileController : ControllerBase
         }
 
         var profile = await _mediator.ReadProfileAsync(userId);
-        return profile is null ? NotFound() : Ok(profile);
+        return Ok(profile);
     }
 }

src/WorkFlow.Application/Profiles/ReadProfileQuery.cs

@@ -1,5 +1,6 @@
 using AutoMapper;
 using DigitalData.Core.Abstraction.Application.Repository;
+using DigitalData.Core.Exceptions;
 using MediatR;
 using WorkFlow.Application.Buttons;
 using WorkFlow.Application.Contracts.Repositories;
@@ -12,13 +13,13 @@ namespace WorkFlow.Application.Profiles;
 /// Represents a request to read a user profile by their user ID.
 /// </summary>
 /// <param name="UserId">The ID of the user whose profile is being requested.</param>
-public record ReadProfileQuery(int UserId, bool IncludeObject = true) : IRequest<ProfileDto?>;
+public record ReadProfileQuery(int UserId, bool IncludeObject = true) : IRequest<ProfileDto>;
 
 /// <summary>
 /// Handles the <see cref="ReadProfileQuery"/> request by retrieving the user profile
 /// from the data store using the <see cref="IProfileRepository"/>.
 /// </summary>
-public class ReadProfileHandler : IRequestHandler<ReadProfileQuery, ProfileDto?>
+public class ReadProfileHandler : IRequestHandler<ReadProfileQuery, ProfileDto>
 {
     private readonly IProfileRepository _profileRepository;
 
@@ -48,15 +49,17 @@ public class ReadProfileHandler : IRequestHandler<ReadProfileQuery, ProfileDto?>
     /// <param name="request">The request containing the user ID.</param>
     /// <param name="cancel">A cancellation token for the operation.</param>
     /// <returns>The user profile if found; otherwise, <c>null</c>.</returns>
-    public async Task<ProfileDto?> Handle(ReadProfileQuery request, CancellationToken cancel = default)
+    public async Task<ProfileDto> Handle(ReadProfileQuery request, CancellationToken cancel = default)
     {
-        var profile = await _profileRepository.ReadAsync(request.UserId, cancel);
-        if (request.IncludeObject && profile?.Id is int profileId)
+        var profile = await _profileRepository.ReadAsync(request.UserId, cancel)
+            ?? throw new NotFoundException();
+
+        if (request.IncludeObject && profile.Id is int profileId)
             profile.Objects = await _objRepository.ReadAsync(request.UserId, profileId, cancel);
 
         var profileDto = _mapper.Map<ProfileDto>(profile);
 
-        if (profile?.Id is int pId)
+        if (profile.Id is int pId)
         {
             var bttns = await _bttnRepository.Read(b => b.ProfileId == pId).ToListAsync(cancel);
             profileDto.Buttons = _mapper.Map<IEnumerable<ButtonDto>>(bttns);
@@ -68,6 +71,6 @@ public class ReadProfileHandler : IRequestHandler<ReadProfileQuery, ProfileDto?>
 
 public static class ReadProfileQueryExtensions
 {
-    public static Task<ProfileDto?> ReadProfileAsync(this IMediator mediator, int userId, bool includeObject = true)
+    public static Task<ProfileDto> ReadProfileAsync(this IMediator mediator, int userId, bool includeObject = true)
         => mediator.Send(new ReadProfileQuery(UserId: userId, IncludeObject: includeObject));
 }

src/WorkFlow.Application/WorkFlow.Application.csproj

@@ -9,6 +9,7 @@
   <ItemGroup>
     <PackageReference Include="DigitalData.Core.Abstraction.Application" Version="1.0.0" />
     <PackageReference Include="DigitalData.Core.Application" Version="3.3.4" />
+    <PackageReference Include="DigitalData.Core.Exceptions" Version="1.0.1" />
     <PackageReference Include="MediatR" Version="13.0.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="7.0.20" />
     <PackageReference Include="UserManager" Version="1.1.2" />