name: CI
on:
  pull_request:
  merge_group:

env:
  MDBOOK_VERSION: 0.5.1

jobs:
  test:
    name: Test
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - name: Update rustup
      run: rustup self update
    - name: Install Rust
      run: |
        rustup set profile minimal
        rustup toolchain install nightly -c rust-docs
        rustup default nightly
    - name: Install mdbook
      run: |
        mkdir bin
        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 --directory=bin
        echo "$(pwd)/bin" >> $GITHUB_PATH
    - name: Report versions
      run: |
        rustup --version
        rustc -Vv
        mdbook --version
    - name: Run tests
      run: mdbook test
    - name: Check for broken links
      run: |
        curl -sSLo linkcheck.sh \
          https://raw.githubusercontent.com/rust-lang/rust/master/src/tools/linkchecker/linkcheck.sh
        sh linkcheck.sh --all nomicon

  # The success job is here to consolidate the total success/failure state of
  # all other jobs. This job is then included in the GitHub branch protection
  # rule which prevents merges unless all other jobs are passing. This makes
  # it easier to manage the list of jobs via this yml file and to prevent
  # accidentally adding new jobs without also updating the branch protections.
  success:
    name: Success gate
    if: always()
    needs:
      - test
    runs-on: ubuntu-latest
    steps:
      - run: jq --exit-status 'all(.result == "success")' <<< '${{ toJson(needs) }}'
      - name: Done
        run: exit 0
