actionlint.yml

name: actionlint

on:
  push:
    branches:
      - main
    paths:
      - '.github/workflows/*.ya?ml'
  pull_request:
    paths:
      - '.github/workflows/*.ya?ml'

defaults:
  run:
    shell: bash -xeuo pipefail {0}

concurrency:
  group: "actionlint-${{ github.ref }}"
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

env:
  HOMEBREW_DEVELOPER: 1
  HOMEBREW_NO_AUTO_UPDATE: 1
  HOMEBREW_NO_ENV_HINTS: 1

permissions: {}

# FIXME: The `Install tools` step fails inside the Docker container for some reason.
jobs:
  workflow_syntax:
    if: github.repository_owner == 'Homebrew'
    runs-on: ubuntu-latest
    steps:
      - name: Set up Homebrew
        id: setup-homebrew
        uses: Homebrew/actions/setup-homebrew@master
        with:
          core: false
          cask: false
          test-bot: false

      - name: Install tools
        run: brew install actionlint shellcheck zizmor

      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          persist-credentials: false

      - run: zizmor --format sarif . > results.sarif

      - name: Upload SARIF file
        uses: actions/upload-artifact@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1 # v4.6.1
        with:
          name: results.sarif
          path: results.sarif

      - name: Set up actionlint
        run: |
          # Setting `shell: /bin/bash` prevents shellcheck from running on
          # those steps, so let's change them to `shell: bash` for linting.
          sed -i 's|shell: /bin/bash -x|shell: bash -x|' .github/workflows/*.y*ml
          # The JSON matcher needs to be accessible to the container host.
          cp "$(brew --repository)/.github/actionlint-matcher.json" "$HOME"
          echo "::add-matcher::$HOME/actionlint-matcher.json"

      - run: actionlint

  upload_sarif:
    needs: workflow_syntax
    runs-on: ubuntu-latest
    permissions:
      contents: read
      security-events: write
    steps:
      - name: Download SARIF file
        uses: actions/download-artifact@b14cf4c92620c250e1c074ab0a5800e37df86765 # v4.2.0
        with:
          name: results.sarif
          path: results.sarif

      - name: Upload SARIF file
        uses: github/codeql-action/upload-sarif@5f8171a638ada777af81d42b55959a643bb29017 # v3.28.12
        with:
          sarif_file: results.sarif
          category: zizmor