auto-format.yml

name: Auto Format
on:
  pull_request_target:
    types: [opened, synchronize]
  workflow_dispatch:

jobs:
  auto-format:
    runs-on: ubuntu-latest
    container: osodevops/build-harness:latest
    steps:
      # Checkout the pull request branch
      #  "An action in a workflow run can’t trigger a new workflow run. For example, if an action pushes code using
      #   the repository’s GITHUB_TOKEN, a new workflow will not run even when the repository contains
      #   a workflow configured to run when push events occur."
      # However, using a personal access token will cause events to be triggered.
      # We need that to ensure a status gets posted after the auto-format commit.
      # We also want to trigger tests if the auto-format made no changes.
      - uses: actions/checkout@v4
        if: github.event.pull_request.state == 'open'
        name: Privileged Checkout
        with:
          token: ${{ secrets.TOPBOT_PUBLIC_REPO_ACCESS_TOKEN }}
          repository: ${{ github.event.pull_request.head.repo.full_name }}
          # Check out the PR commit, not the merge commit
          # Use `ref` instead of `sha` to enable pushing back to `ref`
          ref: ${{ github.event.pull_request.head.ref }}
      # Do all the formatting stuff
      - name: Auto Format
        if: github.event.pull_request.state == 'open'
        shell: bash
        env:
          GITHUB_TOKEN: "${{ secrets.TOPBOT_PUBLIC_REPO_ACCESS_TOKEN }}"
        run: make BUILD_HARNESS_PATH=/build-harness PACKAGES_PREFER_HOST=true -f /build-harness/templates/Makefile.build-harness pr/readme/host

      # Commit changes (if any) to the PR branch
      - name: Commit changes to the PR branch
        if: github.event.pull_request.state == 'open'
        shell: bash
        id: commit
        env:
          SENDER: ${{ github.event.sender.login }}
        run: |
          set -x
          output=$(git diff --name-only)

          if [ -n "$output" ]; then
            echo "Changes detected. Pushing to the PR branch"
            git config --global user.name 'osotopbot'
            git config --global user.email '72751587+osotopbot@users.noreply.github.com'
            git add -A
            git commit -m "Auto Format"
            # Prevent looping by not pushing changes in response to changes from cloudpossebot
            [[ $SENDER ==  "osotopbot" ]] || git push
            # Set status to fail, because the push should trigger another status check,
            # and we use success to indicate the checks are finished.
            printf "::set-output name=%s::%s\n" "changed" "true"
            exit 1
          else
            printf "::set-output name=%s::%s\n" "changed" "false"
            echo "No changes detected"
          fi