new_examples_links_in_table_of_content.yml

name: All new examples are linked in the README

on:
  pull_request:
    branches: [ main ]

jobs:
  new-example-links-in-examples-readme:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Code
        uses: actions/checkout@v3
      - name: Get Changed Files
        id: changed-files
        uses: tj-actions/changed-files@v45
        with:
          files:  |
            examples/**/*.ipynb
      - name: Check README links
        env:
          # We only want the added file so that if we do an exception we dop not have to make an exception again each time qu're editing the file
          NEW_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
          README: examples/README.md
        run: |
          all_linked=true
          for file in ${NEW_FILES}; do
            echo "$file was added"
            # Get the directory of the new notebook file
            notebook_dir=$(dirname "$file")
            # Get the filename without the directory path
            filename=$(basename "$file")

            # Check if link exists in $README 
            if ! grep -q "$file" "$README" && ! grep -q "${file/examples\//](}" "$README"; then
              # Check if a README.md exists in the sub-folder, and if so, check for the link there
              if [[ -f "$notebook_dir/README.md" ]]; then
                if ! grep -q "$filename" "$notebook_dir/README.md"; then
                  all_linked=false
                  echo "  Link to '$file' not found in "$README".md or $notebook_dir/README.md"
                  echo "::warning file=$file::Link to '$file' not found in a README.md, please add one"
                else
                  echo "  Link to '$file' found in $notebook_dir/README.md"
                fi
              else
                all_linked=false
                echo "  Link to '$file' not found in $README, and no README.md found in $notebook_dir"
                echo "::warning file=$file::Link to '$file' not found in $README, please add one (or create a README.md in the sub-folder)"
              fi
            else
              echo "  Link to '$file' found in $README"
            fi
          done
          if ! $all_linked; then
            exit 1
          fi