[FA-misc] Initial MassTransit implementation seems to work

FictionArchive.Service.NovelService/Consumers/TranslationRequestCompletedConsumer.cs

@@ -0,0 +1,48 @@
+using FictionArchive.Service.NovelService.Models.Localization;
+using FictionArchive.Service.NovelService.Services;
+using FictionArchive.Service.Shared.Contracts.Events;
+using MassTransit;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+
+namespace FictionArchive.Service.NovelService.Consumers;
+
+public class TranslationRequestCompletedConsumer : IConsumer<ITranslationRequestCompleted>
+{
+    private readonly ILogger<TranslationRequestCompletedConsumer> _logger;
+    private readonly NovelServiceDbContext _dbContext;
+
+    public TranslationRequestCompletedConsumer(
+        ILogger<TranslationRequestCompletedConsumer> logger,
+        NovelServiceDbContext dbContext)
+    {
+        _logger = logger;
+        _dbContext = dbContext;
+    }
+
+    public async Task Consume(ConsumeContext<ITranslationRequestCompleted> context)
+    {
+        var message = context.Message;
+
+        var localizationRequest = await _dbContext.LocalizationRequests
+            .Include(r => r.KeyRequestedForTranslation)
+            .ThenInclude(lk => lk.Texts)
+            .FirstOrDefaultAsync(lk => lk.Id == message.TranslationRequestId);
+
+        if (localizationRequest == null)
+        {
+            // Not one of our requests, discard it
+            return;
+        }
+
+        localizationRequest.KeyRequestedForTranslation.Texts.Add(new LocalizationText
+        {
+            Language = localizationRequest.TranslateTo,
+            Text = message.TranslatedText,
+            TranslationEngine = localizationRequest.Engine
+        });
+
+        _dbContext.LocalizationRequests.Remove(localizationRequest);
+        await _dbContext.SaveChangesAsync();
+    }
+}