Add Steam auth, platform validators & name gen

RecNet.Application/Profiles/ProfileService.cs

@@ -6,8 +6,11 @@ using ProfileEntity = RecNet.Domain.Entities.Profiles.Profile;
 namespace RecNet.Application.Profiles;
 
 public class ProfileService(
+    NameGenerator nameGenerator,
     IProfileRepository profileRepository,
     ITokenService tokenService,
+    IConfigService configService,
+    IEnumerable<IPlatformAuthValidator> validators,
     IMapper mapper) : IProfileService
 {
     public async Task<ProfileDTO?> GetProfileAsync(Guid profileId, CancellationToken ct = default)
@@ -32,6 +35,19 @@ public class ProfileService(
         LoginProfileCommand command,
         CancellationToken ct = default)
     {
+        var validator = validators.FirstOrDefault(x => x.PlatformType == command.PlatformType);
+        if (validator is null)
+            return LoginProfileResult.Fail("Invalid platform type");
+        
+        var ignoreAuthValidation = await configService.GetAsync("Profiles:IgnoreAuthValidation", true, ct);
+        
+        var auth = await validator.ValidateAsync(
+            command.PlatformAuthentication,
+            command.PlatformId,
+            ct);
+        if (!auth.Succeeded && !ignoreAuthValidation)
+            return LoginProfileResult.Fail($"Platform Auth Failed: {auth.Message}");
+        
         var profile = await profileRepository.GetByPlatform(
             command.PlatformType,
             command.PlatformId,
@@ -39,21 +55,26 @@ public class ProfileService(
 
         if (profile is null)
         {
+            var name = await nameGenerator.GenerateAsync(ct);
+            
             profile = ProfileEntity.Create(
-                GenerateRandomName(),
+                name,
                 command.PlatformType,
                 command.PlatformId);
 
             await profileRepository.AddAsync(profile, ct);
         }
+        
+        if (profile.IsBanned)
+            return LoginProfileResult.Fail("Profile is banned");
+        
+        if (auth.Name is not null && profile.Name != auth.Name)
+            profile.SetName(auth.Name);
 
         profile.AddDeviceId(command.DeviceId);
 
         await profileRepository.SaveChangesAsync(ct);
 
-        if (profile.IsBanned)
-            return LoginProfileResult.Fail("Profile is banned");
-
         var token = tokenService.GenerateProfileToken(profile);
 
         return LoginProfileResult.Success(
@@ -62,8 +83,4 @@ public class ProfileService(
             expiresIn: token.ExpiresIn
         );
     }
-
-    // Temporary until platform/user-name verification becomes a real use case.
-    private static string GenerateRandomName()
-        => string.Concat("rr", Guid.NewGuid().ToString("N").AsSpan(0, 18));
 }