# Build and deploy mdBook documentation to GitHub Pages.
#
# Triggers on pushes to main/claude that modify docs/** or on manual dispatch.
# Deploys to the gh-pages branch.

name: docs

on:
  push:
    branches: [main, claude]
    paths:
      - 'docs/**'
      - '.github/workflows/docs.yml'
  workflow_dispatch:

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

concurrency:
  group: pages
  cancel-in-progress: true

jobs:
  build:
    name: Build documentation
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install mdBook
        run: |
          mkdir -p $HOME/.local/bin
          curl -sSL https://github.com/rust-lang/mdBook/releases/download/v0.4.44/mdbook-v0.4.44-x86_64-unknown-linux-gnu.tar.gz \
            | tar xz -C $HOME/.local/bin
          echo "$HOME/.local/bin" >> $GITHUB_PATH

      - name: Build book
        working-directory: docs
        run: mdbook build

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

  deploy:
    name: Deploy to Pages
    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