GitHub Actions Upsert a Repository Variable

arazzo: 1.0.1
info:
  title: GitHub Actions Upsert a Repository Variable
  summary: Look up a repository variable by name and either create it or update it, then read it back.
  description: >-
    A configuration-management pattern for Actions variables. The workflow reads
    the variable directly by name, branches on whether it already exists, creates
    it when missing or patches it when present, and finally reads it back to
    confirm the final value. Every step spells out its request inline so the flow
    can be read and executed without opening the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: githubActionsApi
  url: ../openapi/github-actions-openapi.yml
  type: openapi
workflows:
- workflowId: upsert-repo-variable
  summary: Create or update a repository variable by name and confirm its value.
  description: >-
    Probes the variable by name, branches to create or update accordingly, and
    reads the variable back to verify the stored value.
  inputs:
    type: object
    required:
    - accessToken
    - owner
    - repo
    - variableName
    - variableValue
    properties:
      accessToken:
        type: string
        description: GitHub bearer token with Actions variables write access.
      owner:
        type: string
        description: The account owner of the repository.
      repo:
        type: string
        description: The name of the repository without the .git extension.
      variableName:
        type: string
        description: The name of the variable to create or update.
      variableValue:
        type: string
        description: The value to store on the variable.
  steps:
  - stepId: probeVariable
    description: >-
      Read the variable by name. A 200 means it exists and should be updated; a
      404 means it does not exist and should be created.
    operationId: getRepoVariable
    parameters:
    - name: Authorization
      in: header
      value: "Bearer $inputs.accessToken"
    - name: owner
      in: path
      value: $inputs.owner
    - name: repo
      in: path
      value: $inputs.repo
    - name: name
      in: path
      value: $inputs.variableName
    successCriteria:
    - condition: $statusCode == 200 || $statusCode == 404
    outputs:
      existingValue: $response.body#/value
    onSuccess:
    - name: exists
      type: goto
      stepId: updateVariable
      criteria:
      - condition: $statusCode == 200
    - name: missing
      type: goto
      stepId: createVariable
      criteria:
      - condition: $statusCode == 404
  - stepId: updateVariable
    description: >-
      Patch the existing variable with the new value. Returns 204 with no body.
    operationId: updateRepoVariable
    parameters:
    - name: Authorization
      in: header
      value: "Bearer $inputs.accessToken"
    - name: owner
      in: path
      value: $inputs.owner
    - name: repo
      in: path
      value: $inputs.repo
    - name: name
      in: path
      value: $inputs.variableName
    requestBody:
      contentType: application/json
      payload:
        name: $inputs.variableName
        value: $inputs.variableValue
    successCriteria:
    - condition: $statusCode == 204
    onSuccess:
    - name: confirmAfterUpdate
      type: goto
      stepId: confirmVariable
  - stepId: createVariable
    description: >-
      Create the variable with the supplied name and value. Returns 201.
    operationId: createRepoVariable
    parameters:
    - name: Authorization
      in: header
      value: "Bearer $inputs.accessToken"
    - name: owner
      in: path
      value: $inputs.owner
    - name: repo
      in: path
      value: $inputs.repo
    requestBody:
      contentType: application/json
      payload:
        name: $inputs.variableName
        value: $inputs.variableValue
    successCriteria:
    - condition: $statusCode == 201
  - stepId: confirmVariable
    description: >-
      Read the variable back to confirm the stored value after the upsert.
    operationId: getRepoVariable
    parameters:
    - name: Authorization
      in: header
      value: "Bearer $inputs.accessToken"
    - name: owner
      in: path
      value: $inputs.owner
    - name: repo
      in: path
      value: $inputs.repo
    - name: name
      in: path
      value: $inputs.variableName
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      name: $response.body#/name
      value: $response.body#/value
  outputs:
    variableName: $steps.confirmVariable.outputs.name
    variableValue: $steps.confirmVariable.outputs.value