name: Boilerplate

on:
  pull_request:
    branches: ['main']

jobs:

  check:
    name: Boilerplate Check
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false # Keep running if one leg fails.
      matrix:
        extension:
        - go
        - sh

        # Map between extension and human-readable name.
        include:
        - extension: go
          language: Go
        - extension: sh
          language: Bash

    steps:
      - uses: actions/setup-go@v2
        with:
          go-version: 1.17.x

      - uses: actions/checkout@v2

      - name: Install Tools
        run: |
          TEMP_PATH="$(mktemp -d)"
          cd $TEMP_PATH

          echo '::group::🐶 Installing reviewdog ... https://github.com/reviewdog/reviewdog'
          curl -sfL https://raw.githubusercontent.com/reviewdog/reviewdog/master/install.sh | sh -s -- -b "${TEMP_PATH}" 2>&1
          echo '::endgroup::'

          echo '::group:: Installing boilerplate-check ... https://github.com/mattmoor/boilerplate-check'
          go get github.com/mattmoor/boilerplate-check/cmd/boilerplate-check
          echo '::endgroup::'

          echo "${TEMP_PATH}" >> $GITHUB_PATH

      - name: ${{ matrix.language }} license boilerplate
        shell: bash
        env:
          REVIEWDOG_GITHUB_API_TOKEN: ${{ github.token }}
        run: |
          set -e
          cd "${GITHUB_WORKSPACE}" || exit 1

          echo '::group:: Running github.com/mattmoor/boilerplate-check for ${{ matrix.language }} with reviewdog 🐶 ...'
          # Don't fail because of boilerplate-check
          set +o pipefail
          boilerplate-check check \
            --boilerplate ./hack/boilerplate/boilerplate.${{ matrix.extension }}.txt \
            --file-extension ${{ matrix.extension }} \
            --exclude "(vendor|third_party)/" |
          reviewdog -efm="%A%f:%l: %m" \
                -efm="%C%.%#" \
                -name="${{ matrix.language }} headers" \
                -reporter="github-pr-check" \
                -filter-mode="diff_context" \
                -fail-on-error="true" \
                -level="error"
          echo '::endgroup::'