public static async Task <bool> AddUserToStorageAsync(WHUser user, ConfigValues values)
{
var credentials = new StorageCredentials(values.StorageAccountName, values.StorageAccountKey);
var blob = new CloudBlockBlob(new Uri($"{values.StorageAccountUrl}{user.Mail}"), credentials);
await blob.UploadFromByteArrayAsync(user.Image, 0, user.Image.Length);
return(true);
}
public static async Task <string> AquireTokenAsync(ConfigValues values, Func <DeviceCodeResult, Task> deviceCodeResultCallback)
{
AuthenticationResult result = null;
var app = GetGraphClientApp(values.ClientID, values.Authority);
var accounts = await app.GetAccountsAsync();
// All AcquireToken* methods store the tokens in the cache, so check the cache firsty
try
{
result = await app.AcquireTokenSilent(values.AppScopes, accounts.FirstOrDefault()).ExecuteAsync();
}
catch (MsalUiRequiredException ex)
{
// A MsalUiRequiredException happened on AcquireTokenSilent.
// This indicates you need to call AcquireTokenInteractive to acquire a token
System.Diagnostics.Debug.WriteLine($"MsalUiRequiredException: {ex.Message}");
}
try
{
result = await app.AcquireTokenWithDeviceCode(values.AppScopes, deviceCodeResultCallback).ExecuteAsync();
Console.WriteLine(result.Account.Username);
return(result.AccessToken);
}
catch (MsalServiceException)
{
// Kind of errors you could have (in ex.Message)
// AADSTS50059: No tenant-identifying information found in either the request or implied by any provided credentials.
// Mitigation: as explained in the message from Azure AD, the authoriy needs to be tenanted. you have probably created
// your public client application with the following authorities:
// https://login.microsoftonline.com/common or https://login.microsoftonline.com/organizations
// AADSTS90133: Device Code flow is not supported under /common or /consumers endpoint.
// Mitigation: as explained in the message from Azure AD, the authority needs to be tenanted
// AADSTS90002: Tenant <tenantId or domain you used in the authority> not found. This may happen if there are
// no active subscriptions for the tenant. Check with your subscription administrator.
// Mitigation: if you have an active subscription for the tenant this might be that you have a typo in the
// tenantId (GUID) or tenant domain name.
}
catch (OperationCanceledException)
{
// If you use a CancellationToken, and call the Cancel() method on it, then this may be triggered
// to indicate that the operation was cancelled.
// See https://docs.microsoft.com/en-us/dotnet/standard/threading/cancellation-in-managed-threads
// for more detailed information on how C# supports cancellation in managed threads.
}
catch (MsalClientException)
{
// Verification code expired before contacting the server
// This exception will occur if the user does not manage to sign-in before a time out (15 mins) and the
// call to `AcquireTokenWithDeviceCode` is not cancelled in between
}
return(null);
}
public static IEnumerable <string> GetEmployees(ConfigValues values)
{
var storageAccount = CloudStorageAccount.Parse(values.StorageConnectionString);
var blobClient = storageAccount.CreateCloudBlobClient();
var container = blobClient.GetContainerReference(values.ContainerName);
foreach (var c in container.ListBlobs(null, false))
{
if (c.GetType() == typeof(CloudBlockBlob))
{
var blob = (CloudBlockBlob)c;
yield return(blob.Name);
}
}
}
public static async Task <bool> TrainModelAsync(ConfigValues values)
{
try
{
var faceClient = new FaceClient(new ApiKeyServiceClientCredentials(values.FaceApiKey), new DelegatingHandler[] { })
{
Endpoint = FaceUrl
};
await faceClient.PersonGroup.TrainAsync(PersonGroupId);
return(true);
}
catch (APIErrorException e)
{
Console.WriteLine(e.ToString());
return(false);
}
}
public static async Task <bool> AddUserToFaceApiAsync(WHUser user, ConfigValues values)
{
var faceClient = new FaceClient(new ApiKeyServiceClientCredentials(values.FaceApiKey), new DelegatingHandler[] { })
{
Endpoint = FaceUrl
};
await WaitCallLimitPerSecondAsync();
using (var stream = new MemoryStream(user.Image))
{
try
{
var existingList = await faceClient.PersonGroup.GetAsync(PersonGroupId);
}
catch (APIErrorException)
{
try
{
await faceClient.PersonGroup.CreateAsync(PersonGroupId, "WhosHereFaces", "Faces from graph", "recognition_02");
}
catch (Exception) { }
}
try
{
var person = await faceClient.PersonGroupPerson.CreateAsync(PersonGroupId, user.Mail, user.Mail);
await faceClient.PersonGroupPerson.AddFaceFromStreamAsync(PersonGroupId, person.PersonId, stream, user.Mail);
}
catch (APIErrorException)
{
return(false);
}
}
return(true);
}
public static async Task <IEnumerable <Person> > AnalyzeImageAsync(byte[] image, ConfigValues values)
{
var faceClient = new FaceClient(new ApiKeyServiceClientCredentials(values.FaceApiKey), new DelegatingHandler[] { })
{
Endpoint = FaceUrl
};
var idResult = new List <Guid>();
var retVal = new List <Person>();
using (var stream = new MemoryStream(image))
{
var result = await faceClient.Face.DetectWithStreamAsync(stream, true, false, null, "recognition_02", true);
var foundIds = result.Select(_ => _.FaceId.Value);
foreach (var chunk in foundIds.Chunk(10))
{
try
{
var identified = await faceClient.Face.IdentifyAsync(chunk.ToList(), PersonGroupId);
idResult.AddRange(identified.Where(i => i.Candidates.Any()).Select(_ => _.Candidates.First().PersonId));
}
catch (APIErrorException e)
{
Console.WriteLine(e.Body.Error.Message);
Console.WriteLine(e.ToString());
}
}
}
foreach (var id in idResult)
{
var person = await faceClient.PersonGroupPerson.GetAsync(PersonGroupId, id);
if (person != null)
{
retVal.Add(person);
}
}
return(retVal);
}