arazzo: 1.0.1
info:
  title: Medplum Amend Resource With History
  summary: Read a resource, update it, then inspect its version history and prior version.
  description: >-
    Demonstrates FHIR resource versioning. The workflow reads any existing
    resource by type and id, performs a full update on it, then reads the
    resource history Bundle to capture the version timeline, and finally reads
    the immediately prior version by its versionId. This is the canonical
    pattern for amending a clinical record while preserving an auditable history.
    Every step spells out its FHIR request inline.
  version: 1.0.0
sourceDescriptions:
- name: medplumApi
  url: ../openapi/medplum-openapi-original.yml
  type: openapi
workflows:
- workflowId: amend-resource-with-history
  summary: Update a resource and walk its version history.
  description: >-
    Reads a resource, updates it with a supplied body, reads the history Bundle,
    and then reads a specific prior version by versionId.
  inputs:
    type: object
    required:
    - resourceType
    - resourceId
    - resourceBody
    properties:
      resourceType:
        type: string
        description: The FHIR resource type (e.g. Patient, Observation, Encounter).
      resourceId:
        type: string
        description: The id of the existing resource to amend.
      resourceBody:
        type: object
        description: >-
          The full FHIR resource payload to write on update. Must include
          resourceType and id matching the target resource.
  steps:
  - stepId: readCurrent
    description: >-
      Read the current version of the target resource to confirm it exists before
      amending it.
    operationId: readResource
    parameters:
    - name: resourceType
      in: path
      value: $inputs.resourceType
    - name: id
      in: path
      value: $inputs.resourceId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      currentVersionId: $response.body#/meta/versionId
  - stepId: applyUpdate
    description: >-
      Perform a full FHIR update on the resource with the supplied body. This
      creates a new version in the resource history.
    operationId: updateResource
    parameters:
    - name: resourceType
      in: path
      value: $inputs.resourceType
    - name: id
      in: path
      value: $inputs.resourceId
    requestBody:
      contentType: application/fhir+json
      payload: $inputs.resourceBody
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      newVersionId: $response.body#/meta/versionId
  - stepId: readHistory
    description: >-
      Read the resource history Bundle to capture the full version timeline after
      the amendment.
    operationId: readResourceHistory
    parameters:
    - name: resourceType
      in: path
      value: $inputs.resourceType
    - name: id
      in: path
      value: $inputs.resourceId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      priorVersionId: $response.body#/entry/1/resource/meta/versionId
  - stepId: readPriorVersion
    description: >-
      Read the immediately prior version of the resource by versionId to confirm
      the pre-amendment state is still retrievable.
    operationId: readVersion
    parameters:
    - name: resourceType
      in: path
      value: $inputs.resourceType
    - name: id
      in: path
      value: $inputs.resourceId
    - name: versionId
      in: path
      value: $steps.readHistory.outputs.priorVersionId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      priorResourceType: $response.body#/resourceType
  outputs:
    newVersionId: $steps.applyUpdate.outputs.newVersionId
    priorVersionId: $steps.readHistory.outputs.priorVersionId