create-index.yml

name: create-index

on:
  push:
    branches: [ master ]

jobs:
  update:
    runs-on: ubuntu-20.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
        
      - name: update
        env:
          GITHUB_TOKEN: ${{ secrets.TOKEN }}
        run: |
          sed -i '/<!-- marker -->/,$ d' README.md
        
          (
          echo '<!-- marker -->'
          
          for directory in cheat-sheet examples; do
            oldgroup=
            printf "\n## %s Index\n\n" $(echo "$directory" | sed -e "s/\b\(.\)/\u\1/g")

            while IFS=/ read -r dot group file; do
              name="$(basename "$file" .md)"

              if [ "$oldgroup" != "$group" ]; then
                echo "<br/><span class='group'><b>$group</b></span>"
                oldgroup="$group"
              fi

              echo " | <a class='topic' href='https://lzone.de/$directory/$name'>$name</a>"
            done < <(cd $directory/ && find . -mindepth 2 -name "*.md" | sort)
          done
          ) >>README.md
          
          git config user.email "noreply@example.com"
          git config user.name "Create Index Workflow"
          git commit -m "Update index." README.md || exit 0
          git push