name: "Charts: Test (Reusable)"

on:
  workflow_call:
    inputs:
      charts:
        description: >
          Json encoded list of Helm charts to release.
          Defaults to releasing everything.
        default: "[]"
        required: true
        type: string
      helmVersion:
        description: >
          Helm version to use.
        default: "3.11.2"
        required: false
        type: string

jobs:
  install-chart:
    name: Install chart
    runs-on: ubuntu-22.04
    if: ${{ inputs.charts != '[]' && inputs.charts != '' }}
    strategy:
      matrix:
        chart: ${{ fromJSON(inputs.charts) }}
        k8s_version:
          [
            "v1.29.13",
            "v1.30.9",
            "v1.31.5",
            "v1.32.1",
          ]
      fail-fast: false
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Validate prerequisite folders
        working-directory: "charts/${{ matrix.chart }}"
        run: |
          CHART_TYPE=$(yq '.type // "application"' Chart.yaml)
          if [[ ("${CHART_TYPE}" == "library") && (! -d "test-chart") ]]; then
            echo "Library charts require a \"test-chart\" directory to run tests"
            exit 1
          fi

      - name: Install Kubernetes tools
        uses: yokawasa/action-setup-kube-tools@v0.11.2
        with:
          setup-tools: |
            helmv3
            kubectl
          helm: "${{ inputs.helmVersion }}"
          kubectl: "${{ matrix.k8s_version }}"

      - uses: actions/setup-python@v5
        with:
          python-version: "3.11"

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

      - name: Create k3d cluster
        uses: nolar/setup-k3d-k3s@v1
        with:
          version: ${{ matrix.k8s_version }}

      - name: Remove node taints
        run: |
          kubectl taint --all=true nodes node.cloudprovider.kubernetes.io/uninitialized- || true

      - name: Dereference JSON schema
        uses: bjw-s/helm-charts-actions/dereference-json-schema@main
        with:
          schemaFile: "charts/${{ matrix.chart }}/values.schema.json"
          outputFile: "charts/${{ matrix.chart }}/values.schema.json"
          allowFileNotFound: true

      - name: Run chart-testing (install)
        working-directory: "charts/${{ matrix.chart }}"
        run: |
          if [ -d "test-chart" ]; then
            cd "test-chart"
          fi

          ct install --config "$GITHUB_WORKSPACE/.ci/ct/ct.yaml" --charts .

  install_success:
    needs:
      - install-chart
    if: |
      always()
    name: Install successful
    runs-on: ubuntu-latest
    steps:
      - name: Check matrix status
        if: >-
          ${{
              (
                inputs.chartsToTest != '' && inputs.chartsToTest != '[]'
              ) &&
              (
                contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled')
              )
          }}
        run: exit 1

  unittest-chart:
    name: Unit-test chart
    runs-on: ubuntu-22.04
    if: ${{ inputs.charts != '[]' && inputs.charts != '' }}
    strategy:
      matrix:
        chart: ${{ fromJSON(inputs.charts) }}
      fail-fast: false
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Validate prerequisite folders
        working-directory: "charts/${{ matrix.chart }}"
        run: |
          CHART_TYPE=$(yq '.type // "application"' Chart.yaml)
          if [[ ("${CHART_TYPE}" == "library") && (! -d "test-chart") ]]; then
            echo "Library charts require a \"test-chart\" directory to run tests"
            exit 1
          fi

      - name: Install Kubernetes tools
        uses: yokawasa/action-setup-kube-tools@v0.11.2
        with:
          setup-tools: |
            helmv3
          helm: "${{ inputs.helmVersion }}"

      - name: Dereference JSON schema
        uses: bjw-s/helm-charts-actions/dereference-json-schema@main
        with:
          schemaFile: "charts/${{ matrix.chart }}/values.schema.json"
          outputFile: "charts/${{ matrix.chart }}/values.schema.json"
          allowFileNotFound: true

      - name: Run tests
        working-directory: "charts/${{ matrix.chart }}"
        run: |
          if [[ -d "test-chart" ]]; then
            cd "test-chart"
          fi

          if [[ ! -d "unittests" ]]; then
            echo "No unit tests found for chart ${{ matrix.chart }}"
            exit 0
          fi

          helm plugin install https://github.com/helm-unittest/helm-unittest.git
          helm dep update
          helm unittest -f "unittests/**/*_test.yaml" .

  unittest_success:
    needs:
      - unittest-chart
    if: |
      always()
    name: Unittest successful
    runs-on: ubuntu-latest
    steps:
      - name: Check matrix status
        if: >-
          ${{
              (
                inputs.chartsToTest != '' && inputs.chartsToTest != '[]'
              ) &&
              (
                contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled')
              )
          }}
        run: exit 1