DVR

NostrStreamer/Services/Dvr/S3DvrStore.cs

@@ -0,0 +1,58 @@
+using Amazon.S3;
+using Amazon.S3.Model;
+using FFMpegCore;
+
+namespace NostrStreamer.Services.Dvr;
+
+public class S3DvrStore : IDvrStore
+{
+    private readonly AmazonS3Client _client;
+    private readonly S3BlobConfig _config;
+    private readonly HttpClient _httpClient;
+
+    public S3DvrStore(Config config, HttpClient httpClient)
+    {
+        _httpClient = httpClient;
+        _config = config.DvrStore;
+        _client = config.DvrStore.CreateClient();
+    }
+
+    public async Task<UploadResult> UploadRecording(Uri source)
+    {
+        var tmpFile = Path.GetTempFileName();
+        var recordingId = Guid.NewGuid();
+        var dvrSeg = await _httpClient.GetStreamAsync(source);
+        
+        await using var fs = new FileStream(tmpFile, FileMode.Create, FileAccess.ReadWrite);
+        await dvrSeg.CopyToAsync(fs);
+        fs.Seek(0, SeekOrigin.Begin);
+        var probe = await FFProbe.AnalyseAsync(tmpFile);
+        fs.Seek(0, SeekOrigin.Begin);
+        
+        var key = $"{recordingId}.mp4";
+        await _client.PutObjectAsync(new PutObjectRequest
+        {
+            BucketName = _config.BucketName,
+            Key = key,
+            InputStream = fs,
+            AutoCloseStream = false,
+            AutoResetStreamPosition = false,
+            ContentType = "video/mp4",
+            DisablePayloadSigning = _config.DisablePayloadSigning
+        });
+
+        var url = _client.GetPreSignedURL(new()
+        {
+            BucketName = _config.BucketName,
+            Key = key,
+            Expires = new DateTime(3000, 1, 1)
+        });
+
+        var ret = new UriBuilder(url)
+        {
+            Scheme = _config.ServiceUrl.Scheme
+        };
+
+        return new(ret.Uri, probe.Duration.TotalSeconds);
+    }
+}