diff.yml

name: Diff HTML pages

# Triggers the workflow only for pull requests
on:
  pull_request:

jobs:
  diff:
    runs-on: ubuntu-22.04
    strategy:
      matrix:
        php:
          - 8.1
    steps:
      # check out base ref and build site into old/
      - uses: actions/checkout@v3
        with:
          ref: ${{ github.event.pull_request.base.sha }}
      - uses: shivammathur/setup-php@v2
        with:
          php-version: ${{ matrix.php }}
          coverage: none
      - run: make && mv build/ old/

      # check out head ref and build site into new/
      - uses: actions/checkout@v3
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          clean: false # Prevent removing files in old/
      - run: make && mv build/ new/

      # Diff between old/ and new/
      - name: Diff between old/ and new/
        run: |
          git diff --no-index --stat --color=always old/ new/ && echo No changed detected || true
          diff -r -u --color=always old/ new/ || true