code_analysis.yml

name: code analysis

on: pull_request
  # push:
  #   branches: [ $default-branch ]
  # pull_request:
  #   branches: [ $default-branch ]

permissions:
  contents: read

jobs:
  clang-format:
    # For any event that is not a PR, the CI will always run. In PRs, the CI
    # can be skipped if the tag [skip-ci] is written in the title.
    if: |
        (github.repository_owner == 'root-project' && github.event_name != 'pull_request') ||
        (github.event_name == 'pull_request' && !contains(github.event.pull_request.title, '[skip-ci]'))

    runs-on: ubuntu-latest
    env:
      TRAVIS_BRANCH: ${{ github.base_ref }} 
      TRAVIS_PULL_REQUEST_BRANCH: ${{ github.head_ref }}
      BASE_COMMIT: ${{ github.event.pull_request.base.sha }}
    steps:
    - uses: actions/checkout@v4
    - name: Fetch base sha
      run: git fetch --depth=1 origin +${{github.event.pull_request.base.sha}}:origin/base_sha
    - name: install clang-format
      run: sudo apt-get install -y clang-format
    - name: run clang-format script
      run: .ci/format_script.sh

  ruff:
    if: |
        (github.repository_owner == 'root-project' && github.event_name != 'pull_request') ||
        (github.event_name == 'pull_request' && !contains(github.event.pull_request.title, '[skip-ci]'))

    runs-on: ubuntu-latest
    steps:
    - name: Checkout code
      uses: actions/checkout@v4

    - name: Get the list of changed files
      id: diff
      run: |
        git fetch --depth=1 origin $GITHUB_BASE_REF 
        git diff --name-only origin/$GITHUB_BASE_REF > changed_files.txt

    - name: Install ruff
      uses: astral-sh/ruff-action@v3
      with:
        args: "--version"

    - name: Lint code
      run: |
        files=$(cat changed_files.txt | grep '\.py$' || echo "")
        if [ -n "$files" ]; then
          echo "$files" | xargs ruff check --diff || true
          echo "$files" | xargs ruff check
        else
          echo "No python files to lint"
        fi

    - name: Format code
      if: always()
      run: |
        files=$(cat changed_files.txt | grep '\.py$' || echo "")
        if [ -n "$files" ]; then
          diff_command=""
          apply_command=""
          for file in $files; do
            while IFS=- read -r start length; do
              [ -z "$start" ] && continue
              length=${length:-1}
              # Skip invalid ranges
              if [ "$start" -eq 0 ] || [ "$length" -eq 0 ]; then
                continue
              fi
              end=$((start + length))
              diff_command+="ruff format --diff --range $start-$end $file && "
              apply_command+="ruff format --range $start-$end $file && "
            done < <(git diff --unified=0 origin/$GITHUB_BASE_REF "$file" | grep '^@@' | sed -E 's/^@@ -[0-9]+(,[0-9]+)? \+([0-9]+)(,([0-9]+))? @@.*/\2-\4/')
          done

          if [ -n "$diff_command" ]; then
            diff_command=${diff_command% && }
            if ! eval "$diff_command"; then
              apply_command=${apply_command% && }
              echo -e "::error::Formatting failed. To apply the changes locally, run the following command:\n$apply_command"
              exit 123
            fi
          else
            echo "No ranges detected to format."
          fi
        else
          echo "No python files to format"
        fi