add-netlify-links.yml

name: Add Netlify Links To Changed Pages
on:
    workflow_call:
    pull_request_target:
jobs:
    get-pr-changes:
        name: Get Changed Files & Update PR Description
        runs-on: ubuntu-latest
        permissions:
            issues: write
            contents: write
            pull-requests: write
            repository-projects: write
        steps:
          - uses: actions/checkout@v4
          - name: Get Changed Files
            id: changed-files
            uses: tj-actions/changed-files@v44
            with:
              separator: ","
              files: source/**
          - name: Build Netlify Links for Changed Pages
            id: build_page_links
            run: |
              new_links=""
              base_link='https://deploy-preview-${{ github.event.number }}--mongodb-docs-csharp.netlify.app'
              changed_files=${{ steps.changed-files.outputs.all_changed_files }}
              files=$(echo $changed_files | tr "," "\n")
              for file in $files; do
                echo "processing ${file}"
                if (! grep -s "includes/"  <<< $file) && 
                    (! grep -s "images/"  <<< $file) && 
                    (! grep -s "examples/"  <<< $file); then
                  file="${file#source}"
                  file="${file%.txt}"
                  filenoslash="${file:1}"
                  echo "${base_link}${file}"
                  new_links+="<li><a href=${base_link}${file}>${filenoslash}</a></li>"
                else
                  echo "(file skipped)"
                fi
              done
              if [ "$new_links" == "" ]; then
                new_links="No pages to preview"
              fi
              echo "Final new_links string: "
              echo "${new_links}"
              echo "staging_links=${new_links}" >> "$GITHUB_OUTPUT"
          - name: Update the PR Description
            uses: MongoCaleb/pr-description-action@master
            with:
                regex: "<!-- start insert-links -->.*<!-- end insert-links -->"
                appendContentOnMatchOnly: true
                regexFlags: is
                content: "<!-- start insert-links -->\n${{ steps.build_page_links.outputs.staging_links }}\n<!-- end insert-links -->"
                token: ${{ secrets.GITHUB_TOKEN }}