name: Helm CI

on:
  merge_group:
  pull_request:
    paths:
      - "charts/**"

permissions: read-all

jobs:
  lint-and-test:
    runs-on: ubuntu-24.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Set up Helm
        uses: azure/setup-helm@v4
        with:
          version: v3.9.2
      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: 3.7
      - name: Set up chart-testing
        uses: helm/chart-testing-action@v2.7.0
      - name: Run chart-testing (list-changed)
        id: list-changed
        run: |
          changed=$(ct --config .ct.yaml list-changed --target-branch ${{ github.event.repository.default_branch }})
          if [[ -n "$changed" ]]; then
            echo "changed=true" >> $GITHUB_OUTPUT
          fi
      - name: Run chart-testing (lint)
        run: ct lint --config .ct.yaml --target-branch ${{ github.event.repository.default_branch }}
      - name: Create kind cluster
        uses: helm/kind-action@v1.12.0
        if: steps.list-changed.outputs.changed == 'true'
      - name: Run chart-testing (install)
        run: ct install --config .ct.yaml