name: Lint

on: [pull_request]

jobs:
  lint:
    runs-on: ubuntu-latest
    env:
      TARGET_BRANCH: ${{ github.event.pull_request.base.ref }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Fetch Target Branch
        run: git fetch origin $TARGET_BRANCH --depth=1

      - name: Install uv
        uses: astral-sh/setup-uv@v6
        with:
          enable-cache: true
          cache-dependency-glob: |
            **/pyproject.toml
            **/uv.lock

      - name: Set up Python
        run: uv python install 3.11

      - name: Install dependencies
        run: uv sync --dev --no-install-project

      - name: Get Changed Python Files
        id: changed-files
        run: |
          merge_base=$(git merge-base origin/"$TARGET_BRANCH" HEAD)
          changed_files=$(git diff --name-only --diff-filter=ACMRTUB "$merge_base" | grep '\.py$' || true)
          echo "files<<EOF" >> $GITHUB_OUTPUT
          echo "$changed_files" >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT

      - name: Run Ruff on Changed Files
        if: ${{ steps.changed-files.outputs.files != '' }}
        run: |
          echo "${{ steps.changed-files.outputs.files }}" \
            | tr ' ' '\n' \
            | grep -v 'src/crewai/cli/templates/' \
            | xargs -I{} uv run ruff check "{}"