name: GitHub Actions CI
on:
  push:
    branches: master
  pull_request: []
  release:
    types:
      - published
jobs:
  tests:
    if: github.repository == 'Homebrew/brew'
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macOS-latest]
    steps:
    - name: Set up Homebrew
      id: set-up-homebrew
      run: |
        if which brew &>/dev/null; then
          HOMEBREW_REPOSITORY="$(brew --repo)"
        else
          HOMEBREW_PREFIX=/home/linuxbrew/.linuxbrew
          HOMEBREW_REPOSITORY="$HOMEBREW_PREFIX/Homebrew"
          sudo mkdir -p "$HOMEBREW_REPOSITORY/Library/Taps"
          git -C "$HOMEBREW_REPOSITORY" init
          git -C "$HOMEBREW_REPOSITORY" remote add origin "https://github.com/$GITHUB_REPOSITORY"

          cd "$HOMEBREW_PREFIX"
          sudo mkdir -p bin etc include lib opt sbin share var/homebrew/linked Cellar
          sudo ln -sf ../Homebrew/bin/brew "$HOMEBREW_PREFIX/bin/"
          cd -

          export PATH="$HOMEBREW_PREFIX/bin:$PATH"
          echo "::add-path::$HOMEBREW_PREFIX/bin"
        fi

        cd "$HOMEBREW_REPOSITORY"
        rm -rf "$GITHUB_WORKSPACE"
        ln -s "$HOMEBREW_REPOSITORY" "$GITHUB_WORKSPACE"
        git fetch --tags origin "${{github.sha}}"
        git checkout --force -B master FETCH_HEAD
        brew update-reset Library/Taps/homebrew/homebrew-core
        cd -

        GEMS_HASH=$(shasum -a 256 "$HOMEBREW_REPOSITORY/Library/Homebrew/Gemfile.lock" | cut -f1 -d' ')
        echo "::set-output name=gems-hash::$GEMS_HASH"

        if [ "$RUNNER_OS" = "Linux" ]; then
          sudo chown -R "$USER" "$HOMEBREW_PREFIX"
        fi

    - name: Set up Ruby
      if: matrix.os == 'ubuntu-latest'
      uses: actions/setup-ruby@master
      with:
        ruby-version: '2.6'

    - name: Run brew config
      run: brew config

    - name: Run brew doctor
      run: |
        if [ "$RUNNER_OS" = "Linux" ]; then
          # Cleanup some Linux `brew doctor` failures
          sudo rm -rf /usr/local/include/node/
        else
          # Allow Xcode to be outdated
          export HOMEBREW_GITHUB_ACTIONS=1

          # Link old gettext (otherwise `brew doctor` is sad)
          brew link gettext
        fi
        brew doctor

    - name: Cache Bundler RubyGems
      id: cache
      uses: actions/cache@v1
      with:
        path: Library/Homebrew/vendor/bundle/ruby/
        key: ${{ runner.os }}-rubygems-${{ steps.set-up-homebrew.outputs.gems-hash }}
        restore-keys: |
          ${{ runner.os }}-rubygems-

    - name: Install Bundler RubyGems
      if: steps.cache.outputs.cache-hit != 'true'
      run: brew install-bundler-gems

    - name: Check for uncommitted RubyGems
      run: git diff --stat --exit-code Library/Homebrew/vendor/bundle/ruby

    - name: Install taps
      run: |
        # Install taps needed for 'brew tests' and 'brew man'
        export HOMEBREW_NO_AUTO_UPDATE=1
        cd "$(brew --repo)"
        brew tap homebrew/bundle
        brew update-reset Library/Taps/homebrew/homebrew-bundle
        brew tap homebrew/services
        brew update-reset Library/Taps/homebrew/homebrew-services
        brew tap homebrew/test-bot
        brew update-reset Library/Taps/homebrew/homebrew-test-bot
        if [ "$RUNNER_OS" = "macOS" ]; then
          brew tap homebrew/cask
          brew update-reset Library/Taps/homebrew/homebrew-cask
        else
          # Fix permissions for 'brew tests'
          sudo chmod -R g-w,o-w /home/linuxbrew /home/runner /opt
        fi

    - name: Run brew style
      run: brew style --display-cop-names

    - name: Run brew man
      run: brew man --fail-if-changed

    - name: Run brew tests
      run: |
        # brew tests doesn't like world writable directories
        umask 022

        # set variables for coverage reporting
        export HOMEBREW_CI_BUILD_NUMBER="$GITHUB_REF"
        export HOMEBREW_CI_BRANCH="$HEAD_GITHUB_REF"
        export HOMEBREW_GITHUB_REPOSITORY="$GITHUB_REPOSITORY"

        # don't bother running all tests on both platforms (for speed)
        if [ "$RUNNER_OS" = "Linux" ]; then
          brew tests --no-compat --online
          brew tests --generic --online
          brew tests --online
        else
          brew tests --online --coverage
        fi
      env:
        HOMEBREW_GITHUB_API_TOKEN: ${{ secrets.GITHUB_TOKEN }}

        # set variables for coverage reporting
        HOMEBREW_GITHUB_ACTIONS: 1
        HOMEBREW_CI_NAME: github-actions
        HOMEBREW_COVERALLS_REPO_TOKEN: 3F6U6ZqctoNJwKyREremsqMgpU3qYgxFk

        # These cannot be queried at the macOS level on GitHub Actions.
        HOMEBREW_LANGUAGES: en-GB

    - name: Run brew update-tests
      run: |
        git config --global user.name "BrewTestBot"
        git config --global user.email "homebrew-test-bot@lists.sfconservancy.org"
        brew update-test
        brew update-test --to-tag
        brew update-test --commit=HEAD
      if: github.event_name == 'pull_request'

    - name: Run brew readall on all taps
      run: brew readall --aliases

    - name: Run brew style on homebrew-core
      run: brew style --display-cop-names homebrew/core

    - name: Run brew style on official taps
      run: brew style --display-cop-names homebrew/bundle homebrew/services homebrew/test-bot

    - name: Run vale for docs linting
      run: |
        brew install vale
        vale docs/

    - name: Lint Dockerfile
      if: matrix.os == 'ubuntu-latest'
      run: |
        brew install hadolint
        hadolint Dockerfile

    - name: Build Docker image
      if: matrix.os == 'ubuntu-latest'
      run: |
        docker pull homebrew/brew
        docker-compose -f Dockerfile.yml build sut

    - name: Run brew test-bot
      run: |
        if [ "$RUNNER_OS" = "Linux" ]; then
          docker-compose -f Dockerfile.yml run --rm -v $GITHUB_WORKSPACE:/tmp/test-bot sut
          docker tag homebrew_sut brew
        else
          brew test-bot
        fi

    - name: Deploy the latest Docker image to GitHub
      if: matrix.os == 'ubuntu-latest' && github.ref == 'refs/heads/master'
      run: |
        docker login docker.pkg.github.com -u BrewTestBot -p ${{secrets.GITHUB_TOKEN}}
        docker tag brew docker.pkg.github.com/homebrew/brew/brew
        docker push docker.pkg.github.com/homebrew/brew/brew

    - name: Deploy the tagged Docker image to GitHub
      if: matrix.os == 'ubuntu-latest' && startsWith(github.ref, 'refs/tags/')
      run: |
        docker login docker.pkg.github.com -u BrewTestBot -p ${{secrets.GITHUB_TOKEN}}
        v=${GITHUB_REF:10}
        docker tag brew "docker.pkg.github.com/homebrew/brew/brew:$v"
        docker push "docker.pkg.github.com/homebrew/brew/brew:$v"