public async Task <string> PostCheckUser(MessageAttachments model)
{
foreach (var user in model.Users)
{
// Do what you need to with the bytes from the uploaded attachments
var bytes = user.GetByteArray();
AnalyzedFacialResults faceResponse = await FaceAnalyzer.DetectFaceAsync(bytes);
if (faceResponse == null)
{
return("Error");
}
if (faceResponse.Success)
{
var identifiedUser = context.IdentifiedUsers.Where(x => x.Id == faceResponse.FaceId);
if (identifiedUser.Count() == 0)
{
return("User not found");
}
else if (identifiedUser.Count() >= 1)
{
return(identifiedUser.First().Email);
}
}
return(faceResponse.Error);
}
return("Something went wrong");
}
public async Task <string> PostAddUser(MessageAttachments model)
{
int counter = 0;
var personGroups = await FaceAnalyzer.faceServiceClient.ListPersonGroupsAsync();
var xamGroup = personGroups.Where(x => x.Name == "Xamarin").FirstOrDefault();
foreach (var user in model.Users)
{
CreatePersonResult person;
var bytes = user.GetByteArray();
var detectedFaceResults = await FaceAnalyzer.DetectFaceAsync(bytes);
if (detectedFaceResults.Success)
{
var isUserInDatabase = context.IdentifiedUsers.Where(usr => usr.Id == detectedFaceResults.FaceId.ToString()).ToList().FirstOrDefault();
if (isUserInDatabase == null)
{
context.IdentifiedUsers.Add(new IdentifiedUser {
Id = detectedFaceResults.FaceId.ToString(), Email = user.UserEmail
});
}
else
{
return($"User {isUserInDatabase.Email} is already in the database");
}
}
else
{
//Check if CognitiveServices XamarinGroup doesn't know of our user
if (detectedFaceResults.Error == "Unable to Identify User")
{
using (Stream imageFileStream = new MemoryStream(bytes))
{
person = await FaceAnalyzer.faceServiceClient.CreatePersonAsync(xamGroup.PersonGroupId, user.UserEmail);
await FaceAnalyzer.faceServiceClient.AddPersonFaceAsync(xamGroup.PersonGroupId, person.PersonId, imageFileStream);
await FaceAnalyzer.faceServiceClient.TrainPersonGroupAsync(xamGroup.PersonGroupId);
context.IdentifiedUsers.Add(new IdentifiedUser {
Id = person.PersonId.ToString(), Email = user.UserEmail
});
}
}
//If it doesn't know about our user, then there was some error i.e. multiple faces, glasses
else
{
return(detectedFaceResults.Error);
}
}
counter++;
}
await context.SaveChangesAsync();
return($"Saved {counter} users out of {model.Users.Count} total users");
}
