copy-rules-to-wcag.yml

name: Copy-rules-to-WCAG

# Commit any change to the wcag-mapping.json file to the wcag repo as act-mapping.json
#
# Notes:
# - parameters can be set in the env section 
# - the source filename needs to be set in two places below
#  - in the on: trigger definition
#  - in env
# - A Personal Access Token (PAT) stored as a secret is required for the push to work
#   - Suggest this is set in a specific W3C account, rather a user account, so not accidently deleted
# - GitHub shows in the commit message a linkto the ACT repo commit

on: 
  push:
    branches:
      - main
    paths:
      - wcag-mapping.json

jobs:
  copy-rules:
    name: Copy rules
    runs-on: ubuntu-latest
    env:
      SOURCE_FILENAME: wcag-mapping.json
      DESTINATION_REPO: w3c/wcag
      DESTINATION_BRANCH: main
      DESTINATION_FILENAME: guidelines/act-mapping.json
      COMMIT_MESSAGE: ACT rules update from https://github.com/${{ github.repository }}/commit/${{ github.sha }}
    steps:
    
      - name: Checkout
        uses: actions/checkout@v2
        with:
          path: this
          
      - name: Clone ${{ env.DESTINATION_REPO }} and copy ${{ env.SOURCE_FILENAME }}
        env:
          API_TOKEN_GITHUB: ${{ secrets.API_TOKEN_GITHUB }} # add as PAT (https://github.com/settings/tokens) as a secret
        run: |
          echo "Cloning $DESTINATION_REPO git repository"
          git clone --single-branch --branch $DESTINATION_BRANCH "https://$API_TOKEN_GITHUB@github.com/$DESTINATION_REPO.git" wcag
          cp "this/$SOURCE_FILENAME" "wcag/$DESTINATION_FILENAME"
       
      - name: Commit and push
        run: |
          echo "Commit"
          cd wcag
          git config user.name github-actions
          git config user.email github-actions@github.com
          git add .
          # check for changes with git diff-index to stop error
          git diff-index --quiet HEAD || git commit -m "$COMMIT_MESSAGE"
          
          echo "Push"
          git push origin --set-upstream "$DESTINATION_BRANCH"