name: "Charts: Lint and test"

on: 
  pull_request:
    paths:
    - 'charts/**'
    - '!charts/**/README.md'

jobs:
  lint:
    runs-on: ubuntu-latest
    outputs:
      changed: ${{ steps.list-changed.outputs.changed }}
      common: ${{ steps.list-changed.outputs.common }}
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Install Helm
        uses: azure/setup-helm@v1
        with:
          version: v3.4.0

      - uses: actions/setup-python@v2
        with:
          python-version: 3.7

      - name: Set up chart-testing
        uses: helm/chart-testing-action@v2.0.1

      - name: Run chart-testing (list-changed)
        id: list-changed
        run: |
          changed=$(ct list-changed --config .github/ct.yaml)
          if [[ -n "$changed" ]]; then
            echo "::set-output name=changed::true"
          fi

          changed_unfiltered=$(ct list-changed --config .github/ct.yaml --excluded-charts "")
          if [[ $(grep -E "^charts/common(-test)?$" <<< "$changed_unfiltered") ]]; then
            echo "::set-output name=common::true"
          fi

      - name: Run chart-testing (lint)
        id: lint
        run: ct lint --config .github/ct.yaml --excluded-charts ""
        if: steps.list-changed.outputs.changed == 'true' || steps.list-changed.outputs.common == 'true'

  unittest:
    runs-on: ubuntu-latest
    needs: lint
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Install Dev tools
        run: sudo apt-get update && sudo apt-get install -y jq libjq-dev

      - name: Install Helm
        uses: azure/setup-helm@v1
        with:
          version: v3.4.0

      - name: Install Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: 2.7            
  
      - name: Install dependencies
        run: |
          export RUBYJQ_USE_SYSTEM_LIBRARIES=1
          bundle install
      
      - name: Run tests
        run: |
          bundle exec m -r test/charts

  install:
    runs-on: ubuntu-latest
    needs: lint
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Install Helm
        uses: azure/setup-helm@v1
        with:
          version: v3.4.0

      - uses: actions/setup-python@v2
        with:
          python-version: 3.7

      - name: Set up chart-testing
        uses: helm/chart-testing-action@v2.0.1

      - name: Create kind cluster
        uses: helm/kind-action@v1.1.0
        if: needs.lint.outputs.changed == 'true' || needs.lint.outputs.common == 'true'

      - name: Run chart-testing (install)
        run: ct install --config .github/ct.yaml
        if: needs.lint.outputs.changed == 'true'

      - name: Run chart-testing (common-test)
        run: |
          ct install --config .github/ct.yaml --charts 'charts/common-test'
        if: needs.lint.outputs.common == 'true'