Raven.Smuggler.SmugglerApi.ExportAttachments C# (CSharp) Method

		protected override async Task<Etag> ExportAttachments(JsonTextWriter jsonWriter, Etag lastEtag)
		{
			int totalCount = 0;
			while (true)
			{
				RavenJArray attachmentInfo = null;
				var request = CreateRequest("/static/?pageSize=" + SmugglerOptions.BatchSize + "&etag=" + lastEtag);
				request.ExecuteRequest(reader => attachmentInfo = RavenJArray.Load(new JsonTextReader(reader)));

				if (attachmentInfo.Length == 0)
				{
					var databaseStatistics = await GetStats();
					var lastEtagComparable = new ComparableByteArray(lastEtag);
					if (lastEtagComparable.CompareTo(databaseStatistics.LastAttachmentEtag) < 0)
					{
						lastEtag = EtagUtil.Increment(lastEtag, SmugglerOptions.BatchSize);
						ShowProgress("Got no results but didn't get to the last attachment etag, trying from: {0}", lastEtag);
						continue;
					}
					ShowProgress("Done with reading attachments, total: {0}", totalCount);
					return lastEtag;
				}

				totalCount += attachmentInfo.Length;
				ShowProgress("Reading batch of {0,3} attachments, read so far: {1,10:#,#;;0}", attachmentInfo.Length, totalCount);
				foreach (var item in attachmentInfo)
				{
					ShowProgress("Downloading attachment: {0}", item.Value<string>("Key"));

					byte[] attachmentData = null;
					var requestData = CreateRequest("/static/" + item.Value<string>("Key"));
					requestData.ExecuteRequest(reader => attachmentData = reader.ReadData());

					new RavenJObject
						{
							{"Data", attachmentData},
							{"Metadata", item.Value<RavenJObject>("Metadata")},
							{"Key", item.Value<string>("Key")}
						}
						.WriteTo(jsonWriter);
				}

				lastEtag = Etag.Parse(attachmentInfo.Last().Value<string>("Etag"));
			}
		}