/// url = 'http://hl7.org/fhir/StructureMap/Coverage5to4B'
/// name = 'Coverage5to4B'
/// title = 'FML Conversion for Coverage: R5 to R4B'
/// status = 'active'

conceptmap "CoverageStatus" {
  prefix s = "http://hl7.org/fhir/fm-status"
  prefix t = "http://hl7.org/fhir/4.3/fm-status"

  s:active - t:active
  s:cancelled - t:cancelled
  s:draft - t:draft
  s:"entered-in-error" - t:"entered-in-error"
}

uses "http://hl7.org/fhir/StructureDefinition/Coverage" alias CoverageR5 as source
uses "http://hl7.org/fhir/4.3/StructureDefinition/Coverage" alias CoverageR4B as target

imports "http://hl7.org/fhir/StructureMap/*5to4B"

group Coverage(source src : CoverageR5, target tgt : CoverageR4B) extends DomainResource <<type+>> {
  src.identifier -> tgt.identifier;
  src.status as v -> tgt.status = translate(v, '#CoverageStatus', 'code');
  src.type -> tgt.type; // src.kind as v -> tgt.kind = translate(v, '#CoverageKind', 'code');
  src.policyHolder -> tgt.policyHolder;
  src.subscriber -> tgt.subscriber;
  src.subscriberId as s -> tgt then {
    s.value -> tgt.subscriberId;
  };
  src.beneficiary -> tgt.beneficiary;
  src.dependent -> tgt.dependent;
  src.relationship -> tgt.relationship;
  src.period -> tgt.period;
  src.class as s -> tgt.class as t then CoverageClass(s, t); // src.insurer -> tgt.insurer;
  src.order -> tgt.order;
  src.network -> tgt.network;
  src.costToBeneficiary as s -> tgt.costToBeneficiary as t then CoverageCostToBeneficiary(s, t);
  src.subrogation -> tgt.subrogation;
  src.contract -> tgt.contract;
}

// group CoveragePaymentBy(source src, target tgt) extends BackboneElement {
// src.party -> tgt.party;
// src.responsibility -> tgt.responsibility;
// }
group CoverageClass(source src, target tgt) extends BackboneElement {
  src.type -> tgt.type;
  src.value as s -> tgt then {
    s.value -> tgt.value;
  };
  src.name -> tgt.name;
}

group CoverageCostToBeneficiary(source src, target tgt) extends BackboneElement {
  src.type -> tgt.type;
  src.value : Quantity -> tgt.value; // src.category -> tgt.category;
  src.value : Money -> tgt.value;
  src.exception as s -> tgt.exception as t then CoverageCostToBeneficiaryException(s, t);
}

group CoverageCostToBeneficiaryException(source src, target tgt) extends BackboneElement {
  src.type -> tgt.type;
  src.period -> tgt.period;
}