private void CreateAllergy(AllergyDto dto, Patient patient, Provenance provenance)
{
var allergyStatus = _mappingHelper.MapLookupField <AllergyStatus> (dto.AllergyStatus);
CodedConcept allergenCodedConcept = null;
if (dto.AllergenCodedConcept != null)
{
allergenCodedConcept = new CodedConceptBuilder().WithCodedConceptDto(dto.AllergenCodedConcept);
}
var allergy = patient.AddAllergy(allergyStatus, allergenCodedConcept, provenance);
var allergySeverityType = _mappingHelper.MapLookupField <AllergySeverityType> (dto.AllergySeverityType);
var allergyType = _mappingHelper.MapLookupField <AllergyType> (dto.AllergyType);
allergy.ReviseAllergySeverityType(allergySeverityType);
allergy.ReviseAllergyType(allergyType);
allergy.ReviseOnsetDateRange(new DateRange(dto.OnsetStartDate, dto.OnsetEndDate));
// Map reactions
var deletedReactions = allergy.AllergyReactions.Where(
a => dto.AllergyReactions.All(ad => ad.Key != a.Reaction.Key)).ToList();
deletedReactions.ForEach(allergy.DeleteReaction);
var addedReactions = dto.AllergyReactions.Where(
a => allergy.AllergyReactions.All(ad => ad.Reaction.Key != a.Key)).ToList();
addedReactions.ForEach(r => allergy.AddReaction(_mappingHelper.MapLookupField <Reaction> (r)));
}