[FA-misc] Mass transit overhaul, needs testing and review

FictionArchive.Service.NovelService/Services/Consumers/FileUploadCompletedEventConsumer.cs

@@ -0,0 +1,53 @@
+using FictionArchive.Common.Enums;
+using FictionArchive.Service.Shared.MassTransit.Contracts.Events;
+using MassTransit;
+
+namespace FictionArchive.Service.NovelService.Services.Consumers;
+
+public class FileUploadCompletedEventConsumer : IConsumer<FileUploadCompletedEvent>
+{
+    private readonly ILogger<FileUploadCompletedEventConsumer> _logger;
+    private readonly NovelServiceDbContext _dbContext;
+    private readonly NovelUpdateService _novelUpdateService;
+
+    public FileUploadCompletedEventConsumer(
+        ILogger<FileUploadCompletedEventConsumer> logger,
+        NovelServiceDbContext dbContext,
+        NovelUpdateService novelUpdateService)
+    {
+        _logger = logger;
+        _dbContext = dbContext;
+        _novelUpdateService = novelUpdateService;
+    }
+
+    public async Task Consume(ConsumeContext<FileUploadCompletedEvent> context)
+    {
+        var @event = context.Message;
+
+        var image = await _dbContext.Images.FindAsync(@event.RequestId);
+        if (image == null)
+        {
+            // Not a request we care about.
+            _logger.LogDebug(
+                "FileUploadCompletedEvent received for unknown image: {RequestId}",
+                @event.RequestId);
+            return;
+        }
+
+        if (@event.Status == RequestStatus.Failed)
+        {
+            _logger.LogError(
+                "Image upload failed for image with id {ImageId}: {ErrorMessage}",
+                image.Id, @event.ErrorMessage);
+            return;
+        }
+
+        if (@event.Status == RequestStatus.Success)
+        {
+            _logger.LogInformation(
+                "Image upload succeeded for image with id {ImageId}",
+                image.Id);
+            await _novelUpdateService.UpdateImage(image.Id, @event.FileAccessUrl!);
+        }
+    }
+}