name: Code style check

on: [pull_request]

jobs:
  build:
    strategy:
      matrix:
        otp:
          - 24.1.5-4
        elixir:
          - 1.13.2
        os:
          - ubuntu20.04
    runs-on: ubuntu-20.04
    container: "ghcr.io/emqx/emqx-builder/5.0-5:${{ matrix.elixir}}-${{ matrix.otp }}-${{ matrix.os }}"
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 1000
      - name: Run elvis check
        run: |
          ./scripts/elvis-check.sh $GITHUB_BASE_REF
      - name: Check line-break at EOF
        run: |
          ./scripts/check-nl-at-eof.sh
      - name: Check Elixir code formatting
        run: |
          mix format --check-formatted