vale.yml

name: Vale Lint

on:
  pull_request:
    paths:
      - '**/*.md'

jobs:
  vale:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout code
      uses: actions/checkout@v3
      with:
        fetch-depth: 0  # Fetch all history so we can access all commits

    - name: Install jq
      run: sudo apt-get install -y jq

    - name: Get changed files
      id: changed-files
      run: |
        BASE_SHA=$(git merge-base origin/${{ github.event.pull_request.base.ref }} ${{ github.sha }})
        CHANGED_FILES=$(git diff --name-only $BASE_SHA ${{ github.sha }} -- '*.md')
        echo "CHANGED_FILES=$CHANGED_FILES" >> $GITHUB_ENV
        echo "::set-output name=files::$(cat changed_files.json)"

    - name: Print Changed Files
      run: echo $CHANGED_FILES

    - name: Install Vale
      uses: errata-ai/vale-action@v2

    - name: Run Vale on Changed Files
      run: |
        for file in $CHANGED_FILES; do
          vale --output=JSON $file | reviewdog -f=vale -name="Vale" -reporter=github-pr-review -level=warning -filter-mode=nofilter
        done
      env:
        CHANGED_FILES: ${{ steps.changed-files.outputs.files }}