book.yml

name: Build and deploy book

on:
  push:
    branches: [main]
    # 触发条件刻意保持宽松：mdbook build 只需 ~10 秒，
    # 比维护一份精确路径白名单更省心。
  workflow_dispatch:    # 允许在 Actions 页面手动重跑

permissions:
  contents: read
  pages: write
  id-token: write

# 同时只允许一个 deploy 在跑
concurrency:
  group: pages
  cancel-in-progress: false

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v5

      - name: Install mdBook
        env:
          MDBOOK_VERSION: 0.4.49
        run: |
          curl -sSL "https://github.com/rust-lang/mdBook/releases/download/v${MDBOOK_VERSION}/mdbook-v${MDBOOK_VERSION}-x86_64-unknown-linux-gnu.tar.gz" \
            | tar -xz -C /tmp
          sudo mv /tmp/mdbook /usr/local/bin/mdbook
          mdbook --version

      - name: Setup Pages
        uses: actions/configure-pages@v5
        with:
          enablement: true   # 自动开启 Pages（首次运行无需手动到 Settings 里开）

      - name: Build book
        working-directory: ./book
        run: mdbook build

      - name: Upload artifact
        uses: actions/upload-pages-artifact@v3
        with:
          path: ./book/book

  deploy:
    needs: build
    runs-on: ubuntu-latest
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4