Add application services for profiles and neutrino

RecNet.Application/Profiles/ProfileService.cs

@@ -0,0 +1,69 @@
+using AutoMapper;
+using RecNet.Application.Common.Interfaces;
+using RecNet.Domain.Repositories;
+using ProfileEntity = RecNet.Domain.Entities.Profiles.Profile;
+
+namespace RecNet.Application.Profiles;
+
+public class ProfileService(
+    IProfileRepository profileRepository,
+    ITokenService tokenService,
+    IMapper mapper) : IProfileService
+{
+    public async Task<ProfileDTO?> GetProfileAsync(Guid profileId, CancellationToken ct = default)
+    {
+        var profile = await profileRepository.GetByIdAsync(profileId, ct);
+
+        return profile is null
+            ? null
+            : mapper.Map<ProfileDTO>(profile);
+    }
+
+    public async Task<IReadOnlyList<ProfileDTO>> GetProfilesAsync(
+        List<Guid> profileIds,
+        CancellationToken ct = default)
+    {
+        var profiles = await profileRepository.GetByIdsAsync(profileIds, ct);
+
+        return mapper.Map<List<ProfileDTO>>(profiles);
+    }
+
+    public async Task<LoginProfileResult> LoginAsync(
+        LoginProfileCommand command,
+        CancellationToken ct = default)
+    {
+        var profile = await profileRepository.GetByPlatform(
+            command.PlatformType,
+            command.PlatformId,
+            ct);
+
+        if (profile is null)
+        {
+            profile = ProfileEntity.Create(
+                GenerateRandomName(),
+                command.PlatformType,
+                command.PlatformId);
+
+            await profileRepository.AddAsync(profile, ct);
+        }
+
+        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(
+            profile: mapper.Map<ProfileDTO>(profile),
+            accessToken: token.AccessToken,
+            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));
+}