Upload thumbnails to S3

NostrStreamer/Services/Thumbnail/S3ThumbnailService.cs

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+using System.Diagnostics;
+using Amazon.S3;
+using Microsoft.EntityFrameworkCore;
+using NostrStreamer.Database;
+
+namespace NostrStreamer.Services.Thumbnail;
+
+public class S3ThumbnailService : BaseThumbnailService, IThumbnailService
+{
+    private readonly AmazonS3Client _client;
+    private readonly StreamerContext _context;
+
+    public S3ThumbnailService(Config config, ILogger<S3ThumbnailService> logger, StreamerContext context) : base(config, logger)
+    {
+        _client = config.S3Store.CreateClient();
+        _context = context;
+    }
+
+    public async Task GenerateThumb(UserStream stream)
+    {
+        try
+        {
+            var sw = Stopwatch.StartNew();
+            var path = await GenerateThumbnail(stream);
+            var tGen = sw.Elapsed;
+            var s3Path = MapPath(stream.Id);
+
+            sw.Restart();
+            await using var fs = new FileStream(path, FileMode.Open, FileAccess.Read);
+            await _client.PutObjectAsync(new()
+            {
+                BucketName = Config.S3Store.BucketName,
+                Key = s3Path,
+                InputStream = fs,
+                AutoCloseStream = false,
+                AutoResetStreamPosition = false,
+                ContentType = "image/jpeg",
+                DisablePayloadSigning = Config.S3Store.DisablePayloadSigning
+            });
+
+            var uri = _client.GetPreSignedURL(new()
+            {
+                BucketName = Config.S3Store.BucketName,
+                Key = s3Path,
+                Expires = DateTime.UtcNow.AddYears(1000)
+            });
+
+            var ub = new UriBuilder(uri)
+            {
+                Scheme = Config.S3Store.PublicHost.Scheme,
+                Host = Config.S3Store.PublicHost.Host,
+                Port = Config.S3Store.PublicHost.Port
+            };
+
+            var tUpload = sw.Elapsed;
+            sw.Restart();
+            await _context.Streams.Where(a => a.Id == stream.Id)
+                .ExecuteUpdateAsync(o => o.SetProperty(v => v.Thumbnail, ub.Uri.ToString()));
+
+            var tDbUpdate = sw.Elapsed;
+            
+            stream.Thumbnail = ub.Uri.ToString();
+            
+            fs.Close();
+            File.Delete(path);
+
+            Logger.LogInformation("{id} generated={tg:#,##0}ms, uploaded={tu:#,##0}ms, db={td:#,##0}ms", stream.Id, tGen.TotalMilliseconds,
+                tUpload.TotalMilliseconds, tDbUpdate.TotalMilliseconds);
+        }
+        catch (Exception ex)
+        {
+            Logger.LogWarning("Failed to generate {id} thumbnail {msg}", stream.Id, ex.Message);
+        }
+    }
+
+    private string MapPath(Guid id)
+    {
+        return $"{id}/thumb.jpg";
+    }
+}