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);
}
}
private async Task ProcessCameraCapture(ImageAnalyzer e)
{
if (this.isEngagingCustomer)
{
this.isProcessingPhoto = false;
return;
}
if (e == null)
{
this.allowSendingOffMsg = false;
this.ViewModel.Update(DemoScreenState.NoFace);
this.isProcessingPhoto = false;
return;
}
await e.DetectFacesAsync();
if (e.DetectedFaces.Any())
{
await e.IdentifyFacesAsync();
bool recognized = false;
if (e.IdentifiedPersons.Any())
{
var candidate = e.IdentifiedPersons.First().Person;
// Check if this is a registered customer, who made purchases, before recognizing
CustomerInfo ci = IgniteDataAccess.GetCustomerInfo(candidate.PersonId.ToString());
if (ci != null)
{
recognized = true;
await EngageRecognizedCustomer(ci);
}
}
if (!recognized)
{
await EngageUnrecognized();
}
}
// else CameraControl captured a face, but ImageAnalyzer cannot detect any - no change of state in this case
this.isProcessingPhoto = false;
}
private CustomerRegistrationInfo customerRegistrationInfo; // obtained form registration UI
public void UpdateCustomer(CustomerRegistrationInfo info)
{
customerRegistrationInfo = info;
if (info != null && info.CustomerName.Length > 0)
{
customerInfo = IgniteDataAccess.GetCustomerInfo(info.CustomerFaceHash);
if (customerInfo == null) // first visit
{
IsRecognized = true;
IsUnrecognized = false;
CustomerName = info.CustomerName;
VisitDateStr = "";
PreviousPurchase = "";
RecommendedActions = IgniteDataServices.GetRecommendedActions(customerInfo);
IsWarningNoCheckout = true; // we want to avoid having registered customers without transactions
}
else // second visit
{
IsRecognized = true;
IsUnrecognized = false;
CustomerName = customerInfo.CustomerName;
VisitDateStr = customerInfo.PreviousVisitDate.ToString("MM/dd/yyyy");
PreviousPurchase = ProductCatalog.Instance.GetProductById(customerInfo.SourceItemId).ItemDescription;
RecommendedActions = IgniteDataServices.GetRecommendedActions(customerInfo);
}
}
else
{
customerInfo = null;
IsRecognized = false;
IsUnrecognized = true;
CustomerName = "";
VisitDateStr = "";
PreviousPurchase = "";
RecommendedActions = "";
}
}
private void OnTestBackendFlyoutOpened(object sender, object e)
{
try
{
// Run DB tests
var customers = IgniteDataAccess.GetCustomers();
string testGetCustomers = (customers != null) ? customers.Count.ToString() : "FAIL";
string unregCustomerGuid = "00000000-0000-0000-0000-000000000000";
bool createCustomerRes = IgniteDataAccess.CreateCustomerRecord(unregCustomerGuid, "UNREGISTERED");
string testCreateCustomerRecord = createCustomerRes ? "OK" : "FAIL";
bool createNewTransactionRes = IgniteDataAccess.CreateNewTransaction(11110, 1, unregCustomerGuid);
string testCreateNewTransaction = createNewTransactionRes ? "OK" : "FAIL";
var customerInfo = IgniteDataAccess.GetCustomerInfo(unregCustomerGuid);
string testGetCustomerInfo = (customerInfo?.CustomerName == "UNREGISTERED" &&
customerInfo?.SourceItemId == 11110) ? "OK" : "FAIL";
var inventoryStats = IgniteDataAccess.GetInventoryStats();
string testGetInventoryStats = "FAIL";
foreach (InventoryItemStats iist in inventoryStats)
{
if (iist.ItemId == 11110)
{
testGetInventoryStats = iist.RemainingInventory.ToString();
}
}
this.backendTestResultTextBox.Text = $"GetCustomers.Count: {testGetCustomers}\n" +
$"CreateCutomerRecord: {testCreateCustomerRecord}\n" +
$"CreateNewTransaction: {testCreateNewTransaction}\n" +
$"GetCustomerInfo: {testGetCustomerInfo}\n" +
$"GetInventoryStats.RemainingInventory: {testGetInventoryStats}";
}
catch (Exception ex)
{
this.backendTestResultTextBox.Text = $"Exception: {ex.Message}";
}
}