name: static-tests

on:
  push:
    branches:
      - master
      - staging
      - trying
    tags:
      - '[0-9][0-9][0-9][0-9].[0-9][0-9]-RC[0-9]*'
      - '[0-9][0-9][0-9][0-9].[0-9][0-9]'
      - '[0-9][0-9][0-9][0-9].[0-9][0-9].*'
  pull_request:
    branches:
      - '*'
  merge_group:

jobs:
  static-tests:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@main
      with:
        fetch-depth: 0
    - name: set CI_BASE_BRANCH
      run: |
          if [ -n "${{ github.base_ref }}" ]; then
              echo "CI_BASE_BRANCH=${{ github.base_ref }}" >> $GITHUB_ENV
          elif [ -n "${{ github.event.merge_group.base_ref }}" ]; then
              echo "CI_BASE_BRANCH=${{ github.event.merge_group.base_ref }}" | sed s.=refs/heads/.=. >> $GITHUB_ENV
          fi
    - name: Setup git
      run: |
        # Note: CI_BASE_BRANCH is empty when not in a PR
        if [ -n "${CI_BASE_BRANCH}" ]; then
          git fetch origin ${CI_BASE_BRANCH}:${CI_BASE_BRANCH} --no-tags
        else
          git config diff.renameLimit 16384
        fi
        git config apply.whitespace nowarn
    - name: Fetch riot/static-test-tools Docker image
      run: docker pull riot/static-test-tools:latest
    - name: Run static-tests
      run: |
        # Note: ${CI_BASE_BRANCH} is empty when not in a PR
        docker run --rm                             \
          -e CI_BASE_BRANCH                         \
          -e GITHUB_RUN_ID=${GITHUB_RUN_ID}         \
          -v $(pwd):/data/riotbuild                 \
          riot/static-test-tools:latest             \
          make static-test