public static Task <IEnumerable <Expense> > GetAllAsync(string account) => AzureTableStorage.GetAllAsync(nameof(Expense)) .SelectAsync(ToExpense) .WhereAsync(expense => expense.Account == account);
public static async Task <Receipt> ParseAsync(string blobName)
{
var container =
await ConfigurationReader.GetAsync(StorageAccountConnectionString)
.Map(CloudStorageAccount.Parse)
.Map(client => client.CreateCloudBlobClient()
.GetContainerReference("receipts"))
.ConfigureAwait(false);
var blob = container.GetBlobReference(blobName);
//blob.Uri
var http = new HttpClient();
const string fre = "FormRecognizerEndpoint";
var endpoint = await ConfigurationReader.GetAsync(fre)
.ConfigureAwait(false);
var url =
$"https://{endpoint}/formrecognizer/" +
"v1.0-preview/prebuilt/receipt/asyncBatchAnalyze";
var blobStream = new MemoryStream();
await blob.DownloadToStreamAsync(blobStream)
.ConfigureAwait(false);
string hash;
using (var md5 = MD5.Create())
hash = Convert.ToBase64String(md5.ComputeHash(blobStream));
var existing =
await AzureTableStorage.GetAllAsync("receipthashes")
.ConfigureAwait(false);
var entity =
existing.SingleOrDefault(x => x.PartitionKey == "receipts" &&
x.RowKey == hash);
if (entity != null)
{
var res = entity.Properties["Results"].StringValue;
var text =
await container.GetBlockBlobReference(res)
.DownloadTextAsync()
.ConfigureAwait(false);
return(text.ToReceipt());
}
blobStream.Seek(0, SeekOrigin.Begin);
var streamContent = new StreamContent(blobStream);
streamContent.Headers.ContentType =
new MediaTypeHeaderValue("application/octet-stream");
var request = new HttpRequestMessage(HttpMethod.Post, url)
{
Content = streamContent
};
const string frk = "FormRecognizerKey";
http.DefaultRequestHeaders
.Add("Ocp-Apim-Subscription-Key", await SecretReader.GetAsync(frk)
.ConfigureAwait(false));
var response = await http.SendAsync(request)
.ConfigureAwait(false);
var content =
await response.Content
.ReadAsStringAsync()
.ConfigureAwait(false);
Console.WriteLine(content);
var location =
response.Headers.TryGetValues("Operation-Location", out var values) ?
values.Single() :
throw new Exception();
response.EnsureSuccessStatusCode();
bool resultAvailable;
string responseContent;
do
{
var result =
await http.GetAsync(location)
.ConfigureAwait(false);
responseContent =
await result.Content
.ReadAsStringAsync()
.ConfigureAwait(false);
var bodyResult =
JsonConvert.DeserializeObject <ReceiptRecognizerResult>(responseContent);
resultAvailable = bodyResult.Status == "Succeeded";
} while (!resultAvailable);
var resultsBlobGuid = Guid.NewGuid().ToString();
await container.GetBlockBlobReference(resultsBlobGuid)
.UploadTextAsync(responseContent)
.ConfigureAwait(false);
await SaveResultsToCacheAsync(hash, resultsBlobGuid).ConfigureAwait(false);
return(responseContent.ToReceipt());
}
public static Task <IEnumerable <Expense> > GetAllAsync(string account, string email) => AzureTableStorage.GetAllAsync(nameof(Expense), email + "+" + account) .SelectAsync(ToExpense);
