// Receives the image path and returns the businesscard
public override async Task <Businesscard> getCard(string imagePath)
{
try
{
using (var image = File.OpenRead(imagePath))
{
Businesscard card = MakeEmptyCard();
Debug.WriteLine("AZUREVISION - Received image");
var textHeaders = await cv.ReadInStreamAsync(image);
string operationLocation = textHeaders.OperationLocation;
string operationId = operationLocation.Substring(operationLocation.Length - 36);
// Extract the text
ReadOperationResult results = null;
Debug.WriteLine("AZUREVISION - sending image to Azure Service");
do
{
results = await cv.GetReadResultAsync(Guid.Parse(operationId));
}while ((results.Status == OperationStatusCodes.Running ||
results.Status == OperationStatusCodes.NotStarted));
Debug.WriteLine("AZUREVISION - received information from Azure Service");
card = await analyzeText(formatResults(results));
PrintCard(card);
return(card);
}
}
catch (Exception ex)
{
throw new BadRequestException(ex.ToString());
}
}
// Sends the card to the endpoint and returns a boolean indicating if this was succesfull or not
public async Task SendCardsAsync(Businesscard card)
{
try
{
// Serializing the businesscard object into a json string
string json = JsonSerializer.Serialize <Businesscard>(card, serializerOptions);
StringContent content = new StringContent(json, Encoding.UTF8, "application/json");
HttpResponseMessage response = null;
// Send the card asynchronously to the url and wait for the response
// Constants.RestUrl references a constants class
response = await client.PostAsync(Constants.RestUrl, content);
if (response.IsSuccessStatusCode)
{
// If the response was succesful (200 statuscode) then the card was sent succesfully
Debug.WriteLine("RestService: card was sent succesfully");
}
else
{
// If not then something went wrong, let the calling part of the application know with an exception
Debug.WriteLine("RestService: card could not be sent to the endpoint!");
throw new RestException("RestService: card wasn't sent succesfully");
}
}
catch (Exception ex)
{
throw new RestException("RestService: Card wasn't sent succesfully - Probably due to lack of internet connection");
}
}
private Businesscard makeCard()
{
Businesscard card = new Businesscard();
card.Company = getHighest(companyDic, true);
card.Name = getHighest(nameDic, true);
card.Jobtitle = getHighest(jobTitleDic, true);
card.Phone = getHighest(phoneDic, false);
card.Mobile = getHighest(mobileDic, false);
card.Email = getHighest(emailDic, false);
card.Fax = getHighest(faxDic, false);
string[] address = getHighest(addressDic, true).Split(',');
if (address?.Length > 0)
{
card.Street = address[0].Trim();
}
if (address?.Length > 1)
{
string city = "";
for (int i = 1; i < address.Length; i++)
{
city += " " + address[i];
}
card.City = city.Trim();
}
card.Nature = getHighest(natureDic, true);
card.Extra = extraField;
return(card);
}
public Task <int> SaveBusinesscardAsync(Businesscard card)
{
if (card.Id != 0)
{
// Update an existing businesscard.
return(database.UpdateAsync(card));
}
else
{
// Save a new businesscard.
return(database.InsertAsync(card));
}
}
// Initialize page and set binding context to BusinesscardsEntryViewModel using an existing businesscard
public BusinesscardEntryPage(Businesscard card)
{
InitializeComponent();
BindingContext = new BusinesscardEntryViewModel(Navigation, card);
MessagingCenter.Subscribe <BusinesscardEntryViewModel>(this, "endpoint", (sender) =>
{
save.IsEnabled = false;
delete.IsEnabled = false;
});
MessagingCenter.Subscribe <BusinesscardEntryViewModel>(this, "endpoint_done", (sender) =>
{
save.IsEnabled = true;
delete.IsEnabled = true;
});
}
// Easy function used to print the card
public void PrintCard(Businesscard card)
{
StringBuilder sb = new StringBuilder();
sb.AppendLine("Company: " + card.Company);
sb.AppendLine("Name: " + card.Name);
sb.AppendLine("Nature: " + card.Nature);
sb.AppendLine("JobTitle: " + card.Jobtitle);
sb.AppendLine("Phone: " + card.Phone);
sb.AppendLine("Mobile: " + card.Mobile);
sb.AppendLine("Email:" + card.Email);
sb.AppendLine("Fax: " + card.Fax);
sb.AppendLine("Street: " + card.Street);
sb.AppendLine("City: " + card.City);
sb.AppendLine("Date: " + card.Date);
sb.AppendLine("Origin: " + card.Origin);
sb.AppendLine("Extra: " + card.Extra);
Debug.WriteLine(sb.ToString());
}
// Make an empty card
public Businesscard MakeEmptyCard()
{
Businesscard card = new Businesscard();
card.Company = "";
card.Name = "";
card.Nature = "";
card.Jobtitle = "";
card.Phone = "";
card.Mobile = "";
card.Email = "";
card.Fax = "";
card.Street = "";
card.City = "";
card.Date = new DateTime();
card.Origin = "";
card.Extra = "";
return(card);
}
// Function to store the image locally as an unscanned card for later use
private async Task StoreLocally()
{
// Create a new card and fill in the information
Businesscard card = new Businesscard();
string filename = CameraService.PhotoPath.ToString();
card.Base64 = imageService.ConvertImageToBase64(filename);
card.Date = DateTime.Now;
card.Company = "Tap here to scan the card";
card.Name = "Unscanned card";
card.Extra = "UNSCANNEDCARD"; // Note: this value is very important since it is used to identify which card is unscanned and which is not (DO NOT CHANGE)
// save the card locally
await App.Database.SaveBusinesscardAsync(card);
// refresh the page to show it on the mainpage
OnAppearingTest();
Debug.WriteLine("Stored the card locally because the OCR Service isn't available");
DependencyService.Get <IToast>().LongAlert("Stored the card.\nTry to rescan when connected to the internet.");
}
// Initialize ViewModel, navigation and commands
public BusinesscardEntryViewModel(INavigation navigation)
{
Navigation = navigation;
restService = new RestService();
imageService = new ImageTransformationService();
mailService = new MailService();
_company = new ValidatableObject <string>();
_name = new ValidatableObject <string>();
_email = new ValidatableObject <string>();
_phone = new ValidatableObject <string>();
_mobile = new ValidatableObject <string>();
_fax = new ValidatableObject <string>();
Card = new Businesscard();
SaveBusinessCard = new Command(async() => await OnSave());
DeleteBusinessCard = new Command(async() => await OnDelete());
AddValidations();
}
public Task <int> DeleteBusinesscardAsync(Businesscard card)
{
// Delete a businesscard.
return(database.DeleteAsync(card));
}
