public static void UpdateAge(this Person person, double age)
{
int count = person.Visits.Sum(v => v.ProfilePictures.Count);
if (count == 0)
{
person.DateOfBirth = DateTime.UtcNow.AddYears(-(int)age);
}
else
{
int oldAge = DateHelpers.ConvertDateOfBirthToAge(person.DateOfBirth);
var result = ((oldAge * count) + age) / (count + 1);
person.DateOfBirth = DateTime.UtcNow.AddYears(-(int)result);
}
}
// Converts a recognition item entity to person data transfert object
public static PersonDto ToPersonDto(this RecognitionItem recognitionItem)
{
var lastVisit = recognitionItem.Person?.Visits.LastOrDefault();
var age = recognitionItem.Person != null
? DateHelpers.ConvertDateOfBirthToAge(recognitionItem.Person.DateOfBirth)
: recognitionItem.Face.FaceAttributes.Age;
var gender = recognitionItem.Person?.Gender ??
GenderValuesHelper.Parse(recognitionItem.Face.FaceAttributes.Gender);
return(new PersonDto
{
RecognitionId = recognitionItem.Id,
FirstName = recognitionItem.Person?.FirstName,
IsRecognized = recognitionItem.Person != null,
PersonId = recognitionItem.Person?.PersonApiId ?? default(Guid),
NbPasses = lastVisit?.NbPasses ?? 0,
ReasonOfVisit = lastVisit?.Reason,
Age = (int)age,
Gender = gender,
});
}
public double GetAverageAge()
{
return(Math.Round(Context.Visitors.Select(p => p.DateOfBirth)
.ToList().Average(d => DateHelpers.ConvertDateOfBirthToAge(d)), 2));
}