/// <summary>
/// Builder to create a Registration controller. Creates a connection to the database
/// and loads profiles using the collection of associated user emails. Takes required
/// arguments for the list of emails of already registered users.
///
/// By default, has "en-us" enrollment locale
/// and a delay between concurrent requests specified by SPEAKER_RECOGNITION_API_INTERVAL
/// </summary>
/// <param name="dbConnectionString"></param>
/// <param name="userEmails"></param>
/// <param name="speakerIDKeySub"></param>
public static RegistrationController BuildController(string dbConnectionStr, List <string> registeredEmails,
string speakerIDSubKey = "", string enrollmentLocale = "en-us",
int apiInterval = SPEAKER_RECOGNITION_API_INTERVAL)
{
SpeakerIdentificationServiceClient enrollmentClient = new SpeakerIdentificationServiceClient(speakerIDSubKey);
List <User> userProfiles = new List <User>();
Console.WriteLine(">\tLoading All Attendees' Voice Profiles From Database...");
string email = "";
foreach (var curEmail in registeredEmails)
{
try
{
email = curEmail;
DatabaseController.Initialize(dbConnectionStr);
User curUser = DatabaseController.LoadUser(curEmail);
if (curUser is null)
{
continue;
}
curUser.AudioStream = AudioFileSplitter.Resample(curUser.AudioStream, 16000);
userProfiles.Add(curUser);
Console.WriteLine($"\t-\t[Load Succeeded]\t{email}");
}
catch (Exception ex)
{
Console.Error.WriteLine($"\t-\t[Load Failed]\t{email} Reason: {ex.Message}");
}
}
return(new RegistrationController(userProfiles, enrollmentClient, enrollmentLocale, apiInterval));
}
/// <summary>
/// Async check if a profile is regsitered for the email address.
/// Returns true if so, false otherwise.
///
///
/// </summary>
/// <param name="email"></param>
/// <returns></returns>
private async Task <User> CheckProfileExists(string email)
{
var taskComplete = new TaskCompletionSource <User>();
/*Try to load a user with this email */
User registeredUser = DatabaseController.LoadUser(email);
if (registeredUser == null)
{
return(null);
}
taskComplete.SetResult(registeredUser);
return(registeredUser);
}