public async Task SignIn()
{
try
{
// 1. Try to identify the person
await customerFace.DetectFacesAsync();
await customerFace.IdentifyFacesAsync();
// TODO: consider looping over identified persons to find matching DB record
customerInfo = new CustomerRegistrationInfo();
customerInfo.CustomerFaceHash = customerFace.IdentifiedPersons.First().Person.PersonId.ToString();
customerInfo.CustomerName = customerFace.IdentifiedPersons.First().Person.Name;
// 2. Try to obtain customer info from DB
CustomerInfo dbCustomerInfo = IgniteDataAccess.GetCustomerInfo(customerInfo.CustomerFaceHash);
customerInfo.RegistrationDate = dbCustomerInfo.PreviousVisitDate;
// 3. Update status
StatusText = $"Welcome, {customerInfo.CustomerName}!";
StatusTextColor = Util.ToBrush("green");
PauseCamera?.Invoke(this, EventArgs.Empty);
}
catch (Exception)
{
customerInfo = null;
StatusText = "Please try again.";
StatusTextColor = Util.ToBrush("red");
ResumeCamera?.Invoke(this, EventArgs.Empty);
}
}
public async Task UpdateFaceCaptured(ImageAnalyzer img)
{
customerFace = img;
if (IsRegistrationMode)
{
UpdateRegistrationStatus();
if (img != null)
{
PauseCamera?.Invoke(this, EventArgs.Empty);
}
}
else
{
await SignIn();
}
}