# Adapted from https://github.com/rust-lang/mdBook/wiki/Automated-Deployment:-GitHub-Actions#github-pages-deploy

name: Deploy
on:
  push:
    branches:
      - main

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
      with:
        fetch-depth: 0
    - name: Install mdbook
      run: |
        # Get mdbook
        curl -sSL https://github.com/rust-lang/mdBook/releases/download/v0.4.18/mdbook-v0.4.18-x86_64-unknown-linux-gnu.tar.gz -o mdbook.tar.gz
        # Verify hash
        echo "d276b0e594d5980de6a7917ce74c348f28d3cb8b353ca4eaae344ae8a4c40bea  mdbook.tar.gz" | sha256sum --check
        # Extract
        mkdir mdbook
        tar -xzf mdbook.tar.gz --directory mdbook
        echo `pwd`/mdbook >> $GITHUB_PATH
    - name: Deploy GitHub Pages
      run: |
        # Go to docs directory
        cd docs
        mdbook build
        git worktree add gh-pages gh-pages
        git config user.name "Deploy from CI"
        git config user.email ""
        cd gh-pages
        # Delete the ref to avoid keeping history.
        git update-ref -d refs/heads/gh-pages
        rm -rf *
        mv ../book/* .
        git add .
        git commit -m "Deploy $GITHUB_SHA to gh-pages"
        git push --force