helm-lint.yml

---
# Helm chart lint
# More info at https://github.com/helm/chart-testing-action
name: Lint Helm Charts

on: pull_request

jobs:
  lint-test:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
        with:
          fetch-depth: 0

      - name: Set up Helm
        uses: azure/setup-helm@fe7b79cd5ee1e45176fcad797de68ecaf3ca4814 # v4.2.0
        with:
          version: v3.13.3

      - uses: actions/setup-python@f677139bbe7f9c59b41e40162b753c062f5d49a3 # v5.2.0
        with:
          python-version: '3.x'
          check-latest: true

      - name: Set up chart-testing
        uses: helm/chart-testing-action@e6669bcd63d7cb57cb4380c33043eebe5d111992 # v2.6.1

      - name: Collect chart directories
        id: collect-chart-dirs
        run: |
          # Find all parent directories of directories containing 'Chart.yaml', output via csv without the leading './'
          CHART_DIRS=$(find . -type f -name 'Chart.yaml' -printf '%h\n' |sed 's|^\./||' | xargs -I {} dirname {} | sort -u | tr '\n' ',' | sed 's/,$//' )
          echo "found charts in the following directories ${CHART_DIRS}"
          echo "CHART_DIRS=$CHART_DIRS" >> "$GITHUB_ENV"

      - name: Run chart-testing (list-changed)
        id: list-changed
        run: |
          changed=$(ct list-changed --chart-dirs=${CHART_DIRS} --target-branch ${{ github.event.repository.default_branch }})
          if [[ -n "$changed" ]]; then
            echo "changed=true" >> "$GITHUB_ENV"
          fi

      - name: Run chart-testing (lint)
        id: lint-helm
        if: env.changed == 'true'
        run: |
          echo "Running helm linter on charts in the following directories: $CHART_DIRS"
          ct lint \
            --chart-dirs=$CHART_DIRS \
            --all \
            --validate-maintainers=false \
            --target-branch ${{ github.event.repository.default_branch }}