book.yml

name: Tokei Book

on:
  push:
    branches:
      - main

jobs:
  book:
    runs-on: ubuntu-20.04
    concurrency:
      group: ${{ github.workflow }}-${{ github.ref }}
    steps:
      - uses: actions/checkout@v2

      - name: Check for changes in the book directory
        id: check_changes
        run: |
          if git diff --quiet --exit-code HEAD^ HEAD -- book; then
            echo "No changes in the 'book' directory. Exiting..."
            exit 0
          else
            echo "Changes detected in the book directory. Continuing..."
          fi
        continue-on-error: true

      - name: Setup mdBook
        if: steps.check_changes.outcome == 'success'
        uses: peaceiris/actions-mdbook@v1
        with:
          mdbook-version: "latest"

      - name: Build mdBook
        if: steps.check_changes.outcome == 'success'
        run: mdbook build
        working-directory: ./book

      - name: Deploy
        if: ${{ github.ref == 'refs/heads/main' }} && steps.check_changes.outcome == 'success'
        uses: peaceiris/actions-gh-pages@v3
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./book/book