name: Lint

on: [pull_request]

permissions:
  contents: read

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: Restore global uv cache
        id: cache-restore
        uses: actions/cache/restore@v4
        with:
          path: |
            ~/.cache/uv
            ~/.local/share/uv
            .venv
          key: uv-main-py3.11-${{ hashFiles('uv.lock') }}
          restore-keys: |
            uv-main-py3.11-

      - name: Install uv
        uses: astral-sh/setup-uv@v6
        with:
          version: "0.8.4"
          python-version: "3.11"
          enable-cache: false

      - name: Install dependencies
        run: uv sync --all-groups --all-extras --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 "{}"

      - name: Save uv caches
        if: steps.cache-restore.outputs.cache-hit != 'true'
        uses: actions/cache/save@v4
        with:
          path: |
            ~/.cache/uv
            ~/.local/share/uv
            .venv
          key: uv-main-py3.11-${{ hashFiles('uv.lock') }}