name: Documentation CI

on:
  push:
    branches:
      - master
  pull_request:

permissions:
  contents: read

jobs:
  linting:
    if: github.repository == 'Homebrew/brew'
    runs-on: ubuntu-22.04
    steps:
      - name: Set up Homebrew
        id: set-up-homebrew
        uses: Homebrew/actions/setup-homebrew@master
        with:
          core: false
          cask: false
          test-bot: false

      - name: Install vale
        run: brew install vale

      - name: Lint docs
        working-directory: ${{ steps.set-up-homebrew.outputs.repository-path }}
        run: |
          set -euo pipefail

          # Avoid failing on broken symlinks.
          rm Library/Homebrew/os/mac/pkgconfig/fuse/fuse.pc
          rm Library/Homebrew/os/mac/pkgconfig/fuse/osxfuse.pc

          # No ignore support (https://github.com/errata-ai/vale/issues/131).
          rm -r Library/Homebrew/vendor

          vale .

          # Restore removed files.
          git reset --hard

      - name: Install Ruby
        uses: ruby/setup-ruby@1198b074305f9356bd56dd4b311757cc0dab2f1c # v1.175.1
        with:
          ruby-version: "3.1"
          bundler-cache: true
          working-directory: ${{ steps.set-up-homebrew.outputs.repository-path }}/docs

      - name: Check Markdown syntax
        working-directory: ${{ steps.set-up-homebrew.outputs.repository-path }}/docs
        run: bundle exec rake lint

      - name: Check code blocks conform to our Ruby style guide
        working-directory: ${{ steps.set-up-homebrew.outputs.repository-path }}/docs
        run: brew style .

      - name: Build the site and check for broken links
        working-directory: ${{ steps.set-up-homebrew.outputs.repository-path }}/docs
        run: |
          bundle exec rake test

  rubydoc:
    if: github.repository == 'Homebrew/brew'
    runs-on: ubuntu-22.04
    env:
      BUNDLE_GEMFILE: ${{ github.workspace }}/rubydoc/Gemfile
    steps:
      - name: Set up Homebrew
        id: set-up-homebrew
        uses: Homebrew/actions/setup-homebrew@master
        with:
          core: false
          cask: false
          test-bot: false

      - name: Checkout Homebrew/rubydoc.brew.sh
        uses: actions/checkout@v4
        with:
          repository: Homebrew/rubydoc.brew.sh
          path: rubydoc

      - name: Install Ruby
        uses: ruby/setup-ruby@1198b074305f9356bd56dd4b311757cc0dab2f1c # v1.175.1
        with:
          ruby-version: "3.1"
          bundler-cache: true

      - name: Process rubydoc comments
        working-directory: ${{ steps.set-up-homebrew.outputs.repository-path }}/Library/Homebrew
        run: bundle exec yard doc --no-output --fail-on-warning