GitLab Prune Stale Merged Branches

arazzo: 1.0.1
info:
  title: GitLab Prune Stale Merged Branches
  summary: Survey the branch list, then bulk-delete all merged branches.
  description: >-
    A repository tidy-up flow. The workflow first lists branches matching a
    search term to report how many candidates exist, then triggers GitLab's bulk
    delete of all merged branches in the project. 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: gitlabProjectsApi
  url: ../openapi/gitlab-api-v4-projects-openapi-original.yml
  type: openapi
workflows:
- workflowId: prune-stale-branches
  summary: Report branch candidates and then delete all merged branches.
  description: >-
    Searches the project branches for context, then invokes the bulk delete of
    all merged branches.
  inputs:
    type: object
    required:
    - privateToken
    - projectId
    properties:
      privateToken:
        type: string
        description: GitLab Private-Token used to authenticate the API calls.
      projectId:
        type: string
        description: The ID or URL-encoded path of the project.
      search:
        type: string
        description: Optional search filter for the branch survey.
        default: ''
  steps:
  - stepId: surveyBranches
    description: List branches matching the optional search term for visibility.
    operationId: getApiV4ProjectsIdRepositoryBranches
    parameters:
    - name: Private-Token
      in: header
      value: $inputs.privateToken
    - name: id
      in: path
      value: $inputs.projectId
    - name: search
      in: query
      value: $inputs.search
    - name: per_page
      in: query
      value: 100
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      firstBranchName: $response.body#/0/name
  - stepId: deleteMergedBranches
    description: >-
      Trigger the asynchronous bulk delete of all merged branches in the
      project.
    operationId: deleteApiV4ProjectsIdRepositoryMergedBranches
    parameters:
    - name: Private-Token
      in: header
      value: $inputs.privateToken
    - name: id
      in: path
      value: $inputs.projectId
    successCriteria:
    - condition: $statusCode == 202
  outputs:
    sampleBranch: $steps.surveyBranches.outputs.firstBranchName