//    Copyright 2019 Google Inc.
//
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
//
//        https://www.apache.org/licenses/LICENSE-2.0
//
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.

syntax = "proto3";

package google.fhir.r4.core;

import "google/protobuf/any.proto";
import "google/fhir/core/proto/annotations.proto";
import "google/fhir/r4/proto/core/codes.proto";
import "google/fhir/r4/proto/core/datatypes.proto";

option java_multiple_files = true;
option java_package = "com.google.fhir.r4.core";
option (.google.fhir.proto.fhir_version) = R4;
option go_package = "github.com/google/fhir/go/google/fhir/r4/proto/core/resources/medication_statement_go_proto";

// Auto-generated from StructureDefinition for MedicationStatement.
// Record of medication being taken by a patient.
// See http://hl7.org/fhir/StructureDefinition/MedicationStatement
message MedicationStatement {
  option (.google.fhir.proto.structure_definition_kind) = KIND_RESOURCE;
  option (.google.fhir.proto.fhir_structure_definition_url) =
      "http://hl7.org/fhir/StructureDefinition/MedicationStatement";

  // Logical id of this artifact
  Id id = 1;

  // Metadata about the resource
  Meta meta = 2;

  // A set of rules under which this content was created
  Uri implicit_rules = 3;

  // Language of the resource content
  Code language = 4;

  // Text summary of the resource, for human interpretation
  Narrative text = 5;

  // Contained, inline Resources
  repeated protobuf.Any contained = 6;

  // Field 7 reserved for strongly-typed ContainedResource for id:
  // MedicationStatement.contained
  reserved 7;

  // Additional content defined by implementations
  repeated Extension extension = 8;

  // Extensions that cannot be ignored
  repeated Extension modifier_extension = 9;

  // External identifier
  repeated Identifier identifier = 10;

  // Fulfils plan, proposal or order
  repeated Reference based_on = 11 [
    (.google.fhir.proto.valid_reference_type) = "MedicationRequest",
    (.google.fhir.proto.valid_reference_type) = "CarePlan",
    (.google.fhir.proto.valid_reference_type) = "ServiceRequest"
  ];

  // Part of referenced event
  repeated Reference part_of = 12 [
    (.google.fhir.proto.valid_reference_type) = "MedicationAdministration",
    (.google.fhir.proto.valid_reference_type) = "MedicationDispense",
    (.google.fhir.proto.valid_reference_type) = "MedicationStatement",
    (.google.fhir.proto.valid_reference_type) = "Procedure",
    (.google.fhir.proto.valid_reference_type) = "Observation"
  ];

  // active | completed | entered-in-error | intended | stopped | on-hold |
  // unknown | not-taken
  message StatusCode {
    option (.google.fhir.proto.structure_definition_kind) = KIND_PRIMITIVE_TYPE;
    option (.google.fhir.proto.fhir_valueset_url) =
        "http://hl7.org/fhir/ValueSet/medication-statement-status";
    option (.google.fhir.proto.fhir_profile_base) =
        "http://hl7.org/fhir/StructureDefinition/code";

    MedicationStatementStatusCodes.Value value = 1;

    String id = 2;

    repeated Extension extension = 3;
  }
  StatusCode status = 13
      [(.google.fhir.proto.validation_requirement) = REQUIRED_BY_FHIR];

  // Reason for current status
  repeated CodeableConcept status_reason = 14;

  // Type of medication usage
  CodeableConcept category = 15;

  // What medication was taken
  message MedicationX {
    option (.google.fhir.proto.is_choice_type) = true;

    oneof choice {
      CodeableConcept codeable_concept = 1;
      Reference reference = 2
          [(.google.fhir.proto.valid_reference_type) = "Medication"];
    }
  }
  MedicationX medication = 16
      [(.google.fhir.proto.validation_requirement) = REQUIRED_BY_FHIR];

  // Who is/was taking  the medication
  Reference subject = 17 [
    (.google.fhir.proto.validation_requirement) = REQUIRED_BY_FHIR,
    (.google.fhir.proto.valid_reference_type) = "Patient",
    (.google.fhir.proto.valid_reference_type) = "Group"
  ];

  // Encounter / Episode associated with MedicationStatement
  Reference context = 18 [
    (.google.fhir.proto.valid_reference_type) = "Encounter",
    (.google.fhir.proto.valid_reference_type) = "EpisodeOfCare"
  ];

  // The date/time or interval when the medication is/was/will be taken
  message EffectiveX {
    option (.google.fhir.proto.is_choice_type) = true;

    oneof choice {
      DateTime date_time = 1;
      Period period = 2;
    }
  }
  EffectiveX effective = 19;

  // When the statement was asserted?
  DateTime date_asserted = 20;

  // Person or organization that provided the information about the taking of
  // this medication
  Reference information_source = 21 [
    (.google.fhir.proto.valid_reference_type) = "Patient",
    (.google.fhir.proto.valid_reference_type) = "Practitioner",
    (.google.fhir.proto.valid_reference_type) = "PractitionerRole",
    (.google.fhir.proto.valid_reference_type) = "RelatedPerson",
    (.google.fhir.proto.valid_reference_type) = "Organization"
  ];

  // Additional supporting information
  repeated Reference derived_from = 22
      [(.google.fhir.proto.valid_reference_type) = "Resource"];

  // Reason for why the medication is being/was taken
  repeated CodeableConcept reason_code = 23;

  // Condition or observation that supports why the medication is being/was
  // taken
  repeated Reference reason_reference = 24 [
    (.google.fhir.proto.valid_reference_type) = "Condition",
    (.google.fhir.proto.valid_reference_type) = "Observation",
    (.google.fhir.proto.valid_reference_type) = "DiagnosticReport"
  ];

  // Further information about the statement
  repeated Annotation note = 25;

  // Details of how medication is/was taken or should be taken
  repeated Dosage dosage = 26;
}
