demo-cleanup.yml

name: Clean up demo folders when they no longer exist

on:
    schedule:
        - cron: '0 0 * * *' # Runs every day at midnight
    workflow_dispatch: # Allows manual trigger from the GitHub website

# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
permissions:
    contents: write
    pages: write
    id-token: write

jobs:
    clean_folders:
        runs-on: ubuntu-latest
        environment:
            name: github-pages
            url: ${{ steps.deployment.outputs.page_url }}

        steps:
            - name: Checkout the repo
              uses: actions/checkout@v4
              with:
                  ref: demo-page

            - name: Set up Git
              run: |
                  git config --global user.name "GitHub Action"
                  git config --global user.email "action@github.com"

            - name: Fetch remote branches and tags from origin
              run: git fetch origin --prune

            - name: Run cleanup script
              run: |
                  # Get all remote branch names from origin
                  remote_branches=$(git branch -r | grep -v '\->' | grep "origin/" | sed "s# *origin/##g")

                  # Get all remote tag names from origin
                  remote_tags=$(git ls-remote --tags origin | awk -F/ '{print $NF}' | sed 's/\^{}//')

                  # Combine branches and tags into a single list
                  remote_refs=$(echo -e "$remote_branches\n$remote_tags")

                  # Get all folder names in the current directory
                  local_folders=$(ls -d */ | sed 's#/##')

                  # Loop through each folder in the current directory
                  for folder in $local_folders; do
                      # Check if the folder name exists in the list of remote refs
                      if ! echo "$remote_refs" | grep -qw "$folder"; then
                          # If the folder name doesn't exist in the remote refs, delete the folder
                          echo "Deleting folder: $folder"
                          rm -rf "$folder"
                      fi
                  done

            - name: Commit and push changes
              id: commit-changes
              run: |
                  git add .
                  if ! git diff --cached --exit-code > /dev/null; then
                      git commit -m "Automated folder cleanup"
                    
                      # Squash the commit history into a single commit
                      git reset --soft $(git rev-list --max-parents=0 HEAD)
                      git commit -m "Automated folder cleanup"
                      
                      git push -f origin demo-page
                      # Let the next steps know that changes were made and deployment is needed
                      echo "changes=true" >> $GITHUB_ENV
                  else
                      echo "No changes to commit"
                      # Let the next steps know that no changes were made and deployment will be skipped
                      echo "changes=false" >> $GITHUB_ENV
                  fi

            - name: Upload artifact
              if: env.changes == 'true'
              uses: actions/upload-pages-artifact@v3
              with:
                  path: '.'
                  retention-days: 1

            - name: Setup Pages
              if: env.changes == 'true'
              uses: actions/configure-pages@v5

            - name: Deploy to GitHub Pages
              if: env.changes == 'true'
              id: deployment
              uses: actions/deploy-pages@v4