Generated Narrative: StructureMap LastMenstrualPeriodToObservation

map "http://moh.gov.et/fhir/hiv/StructureMap/LastMenstrualPeriodToObservation" = "LastMenstrualPeriodToObservation"

uses "http://hl7.org/fhir/StructureDefinition/QuestionnaireResponse" as source
uses "http://moh.gov.et/fhir/hiv/StructureDefinition/last-menstrual-period-observation" as target

group LastMenstrualPeriodToObservation(source src : QuestionnaireResponse, target tgt : Observation) {
  src -> tgt.id = uuid() "SetObservationId";
  src -> tgt.status = 'final' "SetStatusCodeValue";
  src -> tgt.code = cc('http://loinc.org', '8665-2') "SetCodeCodeableConcept";
  src.authored as authored -> tgt.effective = create('dateTime') as observationDate then {
    authored as authoredDate -> observationDate = authoredDate "SetObservationDate";
  } "ProcessObservationDate";
  src -> tgt.category = cc('http://hl7.org/fhir/observation-category', 'exam') "SetCategoryCodeableConcept";
  src.subject as patient -> tgt.subject = create('Reference') as subject then {
    patient as pat -> subject.reference = pat "SetPatientReference";
  } "ProcessPatientReference";
  src.author as author -> tgt.performer = create('Reference') as performer then {
    author as auth -> performer.reference = auth "SetAuthorReference";
  } "ProcessAuthorReference";
  src.encounter as QREncounter -> tgt.encounter = create('Reference') as ObsEncounter then {
    QREncounter as enc -> ObsEncounter.reference = enc "SetEncounterReference";
  } "ProcessAuthorReference";
  src.item as item where (linkId = 'lmp') then {
    item.answer first as ans then {
      ans.value as lmp -> tgt.value = create('dateTime') as lmpValue then {
        lmp as obsDate -> lmpValue = obsDate "SetObservationDate";
      };
    };
  };
}