verctl 0.4.4

Stack-agnostic version PRs from Changesets-format fragments
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name: verctl version PR
description: >-
  Open or update the Version PR. Requires `verctl` on PATH.
author: victor-software-house
branding:
  icon: git-pull-request
  color: gray-dark

inputs:
  token:
    description: Token that can open PRs. Default GITHUB_TOKEN.
    required: false
    default: ${{ github.token }}
  config:
    description: Path to the declarations file.
    required: false
    default: .ctl/ver.yaml
  title:
    description: Version PR title.
    required: false
    default: "chore(release): version packages"
  commit-message:
    description: Commit message on the Version PR.
    required: false
    default: "chore(release): version packages"
  dry-run:
    description: Preview only. Set to `true` to write nothing.
    required: false
    default: "false"
  auto-merge:
    description: >-
      Set to `true` to enable GitHub auto-merge on the Version PR, as a squash
      titled after the PR. Requires a ruleset with a required status check on
      the base branch; without one the action fails, because GitHub would merge
      at once. Classic branch protection is not read: its API needs
      administration access that the token does not have.
      Requires `token` other than GITHUB_TOKEN, such as a GitHub App token: a
      merge made with GITHUB_TOKEN starts no workflow, so publish would not run.
    required: false
    default: "false"

runs:
  using: composite
  steps:
    - name: Refuse auto-merge with GITHUB_TOKEN
      if: inputs.auto-merge == 'true' && inputs.dry-run != 'true' && inputs.token == github.token
      shell: bash
      run: |
        echo "::error::auto-merge needs a token other than GITHUB_TOKEN; a merge made with GITHUB_TOKEN starts no publish workflow"
        exit 1
    - name: Prepare release
      shell: bash
      env:
        GITHUB_TOKEN: ${{ inputs.token }}
        VERCTL_CONFIG: ${{ inputs.config }}
        VERCTL_DRY_RUN: ${{ inputs.dry-run }}
        VERCTL_PR_TITLE: ${{ inputs.title }}
        VERCTL_COMMIT_MESSAGE: ${{ inputs.commit-message }}
      run: |
        set -euo pipefail
        extra=()
        if [ "${VERCTL_DRY_RUN}" = true ]; then
          extra+=(--dry-run)
        fi
        exec verctl prepare --pr -c "${VERCTL_CONFIG}" "${extra[@]}"
    - name: Enable auto-merge
      if: inputs.auto-merge == 'true' && inputs.dry-run != 'true'
      shell: bash
      env:
        GH_TOKEN: ${{ inputs.token }}
        REPO: ${{ github.repository }}
        BASE: ${{ github.event.repository.default_branch }}
      run: ${{ github.action_path }}/auto-merge.sh