public async Task <PassportParseResult> ParsePassport(Stream passportImage)
{
var result = new PassportParseResult();
try
{
// TODO: Reusing last task's result (if exists) to spare executions during dev -to be removed in deployed
var task = ocrClient.ListTasks().LastOrDefault() ?? ocrClient.ProcessMrz(passportImage);
result.TaskId = task.Id.ToString();
while (task.IsTaskActive())
{
await ThreadTask.Delay(1000);
task = ocrClient.GetTaskStatus(task.Id);
}
// Sample response file content: /SampleResponse/OcrMrzTaskDocument.xml
var documentUrl = task.DownloadUrls.Single();
result.PassportDocument = PassportDocumentInfo.CreateFromDocumentUrl(documentUrl);
}
catch (Exception ex)
{
result.SetError(ex);
}
return(result);
}
/// <summary>
/// Extracts the passport information from the parsed result.
/// </summary>
private PassportInformation ExtractPassportInformation(PassportParseResult passportParseResult)
{
var passportDocument = passportParseResult.PassportDocument;
var passportInfo = new PassportInformation()
{
Gender = passportDocument.Sex,
DateOfBirth = passportDocument.BirthDateVerified
? DateTime.ParseExact(passportDocument.BirthDate, "yyMMdd", CultureInfo.InvariantCulture)
: default(DateTime?),
ExpirationDate = passportDocument.ExpiryDateVerified
? DateTime.ParseExact(passportDocument.ExpiryDate, "yyMMdd", CultureInfo.InvariantCulture)
: default(DateTime?),
Firstname = passportDocument.GivenName,
Surname = passportDocument.LastName,
PassportNumber = passportDocument.DocumentNumber,
IssuingState = passportDocument.IssuingCountry,
Nationality = passportDocument.Nationality
};
return(passportInfo);
}