public async Task CreateAsync(ulong startTimestamp, ulong endTimestamp, string region, IEnumerable <TemporaryExposureKeyModel> keys)
{
var current = keys;
while (current.Any())
{
var exportKeyModels = current.Take(MaxKeysPerFile).ToImmutableArray();
var exportKeys = exportKeyModels.Select(_ => _.ToKey());
current = current.Skip(MaxKeysPerFile);
var exportModel = await TekExportRepository.CreateAsync();
exportModel.BatchSize = exportKeyModels.Length;
exportModel.StartTimestamp = startTimestamp;
exportModel.EndTimestamp = endTimestamp;
exportModel.Region = region;
var signatureKey = await SignService.GetX509PublicKeyAsync();
var signatureInfo = SignatureService.Create(signatureKey);
var bin = new TemporaryExposureKeyExport();
bin.Keys.AddRange(exportKeys);
bin.BatchNum = exportModel.BatchNum;
bin.BatchSize = exportModel.BatchSize;
bin.Region = exportModel.Region;
bin.StartTimestamp = exportModel.StartTimestamp;
bin.EndTimestamp = exportModel.EndTimestamp;
bin.SignatureInfos.Add(signatureInfo);
var sig = new TEKSignatureList();
using var binStream = new MemoryStream();
bin.WriteTo(binStream);
await binStream.FlushAsync();
binStream.Seek(0, SeekOrigin.Begin);
var signature = await CreateSignatureAsync(binStream, bin.BatchNum, bin.BatchSize);
signature.SignatureInfo = signatureInfo;
sig.Signatures.Add(signature);
using (var s = new MemoryStream())
{
using (var z = new System.IO.Compression.ZipArchive(s, System.IO.Compression.ZipArchiveMode.Create, true))
{
var binEntry = z.CreateEntry(ExportBinFileName);
using (var binFile = binEntry.Open())
{
binStream.Seek(0, SeekOrigin.Begin);
await binStream.CopyToAsync(binFile);
await binFile.FlushAsync();
}
var sigEntry = z.CreateEntry(ExportSigFileName);
using (var sigFile = sigEntry.Open())
{
sig.WriteTo(sigFile);
await sigFile.FlushAsync();
}
}
s.Seek(0, SeekOrigin.Begin);
await WriteToBlobAsync(s, exportModel, bin, sig);
}
await TekExportRepository.UpdateAsync(exportModel);
}
}
