deploy_pr.yml

name: PR preview notification
on:
  pull_request:
    types:
      - opened

jobs:
  build_deploy:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
    steps:
      - name: Get branch name (merge)
        if: github.event_name != 'pull_request'
        shell: bash
        run: echo "BRANCH_NAME=$(echo ${GITHUB_REF#refs/heads/})" >> $GITHUB_ENV

      - name: Get branch name (pull request)
        if: github.event_name == 'pull_request'
        shell: bash
        run: echo "BRANCH_NAME=$(echo ${GITHUB_HEAD_REF})" >> $GITHUB_ENV

      - name: Escape branch name for URL
        shell: bash
        run: echo "URLSAFE_BRANCH_NAME=$(echo ${BRANCH_NAME} | sed 's|[^A-Za-z0-9-]|-|g' | sed -E 's|-*([A-Za-z0-9]*.*[A-Za-z0-9]+)-*|\1|')" >> $GITHUB_ENV

      - name: Report escaped branch name
        shell: bash
        run: echo ${URLSAFE_BRANCH_NAME}

      - name: Post URL to PR
        uses: mshick/add-pr-comment@v2
        with:
          message: |
            [Widget preview page.](https://staging.cdn.innovation.ca.gov/br/pr/${{ env.URLSAFE_BRANCH_NAME }}/preview/index.html)

            (You may need to wait a minute or two for the latest preview to appear at the above link.)