Refactor auth/user services

src/Core/Service/Service.Auth/Auth/ILoginService.cs

@@ -0,0 +1,9 @@
+using System.Threading.Tasks;
+using Domain.Entities;
+
+namespace Service.Auth.Auth;
+
+public interface ILoginService
+{
+    Task<UserAccount?> LoginAsync(string username, string password);
+}

src/Core/Service/Service.Auth/Auth/IRegisterService.cs

@@ -0,0 +1,9 @@
+using System.Threading.Tasks;
+using Domain.Entities;
+
+namespace Service.Auth.Auth;
+
+public interface IRegisterService
+{
+    Task<UserAccount> RegisterAsync(UserAccount userAccount, string password);
+}

src/Core/Service/Service.Auth/Auth/LoginService.cs

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+using System.Threading.Tasks;
+using Domain.Entities;
+using Infrastructure.PasswordHashing;
+using Infrastructure.Repository.Auth;
+
+namespace Service.Auth.Auth;
+
+public class LoginService(
+    IAuthRepository authRepo,
+    IPasswordInfrastructure passwordInfrastructure
+) : ILoginService
+{
+
+    public async Task<UserAccount?> LoginAsync(string username, string password)
+    {
+        // Attempt lookup by username
+        var user = await authRepo.GetUserByUsernameAsync(username);
+
+        // the user was not found
+        if (user is null) return null;
+
+        // @todo handle expired passwords
+        var activeCred = await authRepo.GetActiveCredentialByUserAccountIdAsync(user.UserAccountId);
+
+        if (activeCred is null) return null;
+        return !passwordInfrastructure.Verify(password, activeCred.Hash) ? null : user;
+    }
+}

src/Core/Service/Service.Auth/Auth/RegisterService.cs

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+using System.Threading.Tasks;
+using Domain.Entities;
+using Infrastructure.PasswordHashing;
+using Infrastructure.Repository.Auth;
+
+namespace Service.Auth.Auth;
+
+public class RegisterService(
+    IAuthRepository authRepo,
+    IPasswordInfrastructure passwordInfrastructure
+) : IRegisterService
+{
+    public async Task<UserAccount> RegisterAsync(UserAccount userAccount, string password)
+    {
+        // Check if user already exists
+        var user = await authRepo.GetUserByUsernameAsync(userAccount.Username);
+        if (user is not null)
+        {
+            return null!;
+        }
+
+        // password hashing
+        var hashed = passwordInfrastructure.Hash(password);
+
+        // Register user with hashed password
+        return await authRepo.RegisterUserAsync(
+            userAccount.Username,
+            userAccount.FirstName,
+            userAccount.LastName,
+            userAccount.Email,
+            userAccount.DateOfBirth,
+            hashed);
+    }
+
+ 
+}

src/Core/Service/Service.Auth/Service.Auth.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Konscious.Security.Cryptography.Argon2" Version="1.3.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Domain\Domain.csproj" />
+    <ProjectReference Include="..\..\Infrastructure\Infrastructure.Repository\Infrastructure.Repository.csproj" />
+    <ProjectReference
+      Include="..\..\Infrastructure\Infrastructure.PasswordHashing\Infrastructure.PasswordHashing.csproj" />
+  </ItemGroup>
+</Project>