name: CI

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ '*' ]

jobs:
  stitchmd:
    name: Check or update style.md
    runs-on: ubuntu-latest

    # Needed to give the job permission
    # to push to branches.
    permissions:
      contents: write

    steps:
    - name: Check out repository
      uses: actions/checkout@v4

    - name: Check or update style.md
      uses: abhinav/stitchmd-action@v1
      with:
        # For pull requests, run in 'write' mode so that edits made
        # directly in the GitHub UI get propagated to style.md
        # without a local checkout.
        #
        # Otherwise, run in 'check' mode to fail CI if style.md is out-of-date.
        mode: ${{ github.event_name == 'pull_request' && 'write' || 'check' }}
        summary: src/SUMMARY.md
        preface: src/preface.txt
        output: style.md

    - uses: stefanzweifel/git-auto-commit-action@v5
      if: ${{ github.event_name == 'pull_request' }}
      with:
        file_pattern: style.md
        commit_message: 'Auto-update style.md'