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

FictionArchive.Service.FileService/Services/EventHandlers/UploadFileCommandConsumer.cs

@@ -0,0 +1,63 @@
+using Amazon.S3;
+using Amazon.S3.Model;
+using FictionArchive.Common.Enums;
+using FictionArchive.Service.FileService.Models;
+using FictionArchive.Service.Shared.MassTransit.Contracts.Commands;
+using FictionArchive.Service.Shared.MassTransit.Contracts.Events;
+using MassTransit;
+using Microsoft.Extensions.Options;
+
+namespace FictionArchive.Service.FileService.Services.EventHandlers;
+
+public class UploadFileCommandConsumer : IConsumer<UploadFileCommand>
+{
+    private readonly ILogger<UploadFileCommandConsumer> _logger;
+    private readonly AmazonS3Client _amazonS3Client;
+    private readonly S3Configuration _s3Configuration;
+    private readonly ProxyConfiguration _proxyConfiguration;
+
+    public UploadFileCommandConsumer(
+        ILogger<UploadFileCommandConsumer> logger,
+        AmazonS3Client amazonS3Client,
+        IOptions<S3Configuration> s3Configuration,
+        IOptions<ProxyConfiguration> proxyConfiguration)
+    {
+        _logger = logger;
+        _amazonS3Client = amazonS3Client;
+        _proxyConfiguration = proxyConfiguration.Value;
+        _s3Configuration = s3Configuration.Value;
+    }
+
+    public async Task Consume(ConsumeContext<UploadFileCommand> context)
+    {
+        var command = context.Message;
+
+        var putObjectRequest = new PutObjectRequest();
+        putObjectRequest.BucketName = _s3Configuration.Bucket;
+        putObjectRequest.Key = command.FilePath;
+        putObjectRequest.UseChunkEncoding = false; // Needed to avoid an error with Garage
+
+        using MemoryStream memoryStream = new MemoryStream(command.FileData);
+        putObjectRequest.InputStream = memoryStream;
+
+        var s3Response = await _amazonS3Client.PutObjectAsync(putObjectRequest);
+        if (s3Response.HttpStatusCode != System.Net.HttpStatusCode.OK)
+        {
+            _logger.LogError("An error occurred while uploading file to S3. Response code: {responsecode}", s3Response.HttpStatusCode);
+            await context.Publish(new FileUploadCompletedEvent
+            {
+                RequestId = command.RequestId,
+                Status = RequestStatus.Failed,
+                ErrorMessage = "An error occurred while uploading file to S3."
+            });
+            return;
+        }
+
+        await context.Publish(new FileUploadCompletedEvent
+        {
+            Status = RequestStatus.Success,
+            RequestId = command.RequestId,
+            FileAccessUrl = _proxyConfiguration.BaseUrl + "/" + command.FilePath
+        });
+    }
+}