name: Book

on:
  pull_request:
    paths:
      - 'docs/book/**'
  push:
    paths:
      - 'docs/book/**'

jobs:
  tests:
    name: Test code examples

    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Install rust
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          profile: minimal
          override: true

      - name: Test via skeptic
        uses: actions-rs/cargo@v1
        with:
          command: test
          args: --manifest-path docs/book/tests/Cargo.toml

  deploy:
    name: Deploy book on gh-pages
    needs: [tests]
    if: github.ref == 'refs/heads/master'

    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Install mdBook
        uses: peaceiris/actions-mdbook@v1

      - name: Render book
        run: |
          mdbook build -d gh-pages/master docs/book

      - name: Deploy
        uses: peaceiris/actions-gh-pages@v2.5.1
        with:
          emptyCommits: false
          keepFiles: true
        env:
          ACTIONS_DEPLOY_KEY: ${{ secrets.ACTIONS_DEPLOY_KEY }}
          PUBLISH_BRANCH: gh-pages
          PUBLISH_DIR: docs/book/gh-pages