helm-chart-ci.yml

name: Helm Chart CI

on:
  push:
    branches: [ main, develop ]
    paths:
      - 'charts/**'
      - '.github/workflows/helm-chart-ci.yml'
  pull_request:
    branches: [ main, develop ]
    paths:
      - 'charts/**'
      - '.github/workflows/helm-chart-ci.yml'

jobs:
  lint:
    name: Lint Helm Chart
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Set up Helm
        uses: azure/setup-helm@v4
        with:
          version: '3.13.0'

      - name: Run Helm Lint
        run: |
          helm lint charts/karpenter-optimizer

      - name: Validate Chart Schema
        run: |
          helm lint charts/karpenter-optimizer --strict

  test:
    name: Test Helm Chart Installation
    runs-on: ubuntu-latest
    # Optional: Uncomment to enable full Kubernetes testing with kind
    # This job tests actual chart installation in a real Kubernetes cluster
    if: false  # Set to true to enable (slower but more thorough)
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Set up Helm
        uses: azure/setup-helm@v4
        with:
          version: '3.13.0'

      - name: Set up Kubernetes (kind)
        uses: helm/kind-action@v1.13.0
        with:
          version: 'v0.20.0'

      - name: Create Kubernetes cluster
        run: |
          kind create cluster --name karpenter-optimizer-test --wait 60s

      - name: Test Chart Installation (Default Values)
        run: |
          helm install karpenter-optimizer-test charts/karpenter-optimizer \
            --namespace karpenter-optimizer \
            --create-namespace \
            --wait \
            --timeout 5m \
            --debug

      - name: Test Chart Upgrade
        run: |
          helm upgrade karpenter-optimizer-test charts/karpenter-optimizer \
            --namespace karpenter-optimizer \
            --wait \
            --timeout 5m \
            --debug

      - name: Test Chart Uninstall
        run: |
          helm uninstall karpenter-optimizer-test \
            --namespace karpenter-optimizer

      - name: Cleanup Kubernetes cluster
        if: always()
        run: |
          kind delete cluster --name karpenter-optimizer-test

  package:
    name: Package Helm Chart
    runs-on: ubuntu-latest
    needs: [lint]
    if: github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/develop')
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Set up Helm
        uses: azure/setup-helm@v4
        with:
          version: '3.13.0'

      - name: Package Chart
        run: |
          helm package charts/karpenter-optimizer --destination ./charts

      - name: Check Chart Package
        run: |
          ls -lh charts/*.tgz
          helm show chart charts/karpenter-optimizer-*.tgz

      - name: Upload Chart Artifact
        uses: actions/upload-artifact@v4
        with:
          name: helm-chart-package
          path: charts/*.tgz
          retention-days: 7

  publish:
    name: Publish Helm Chart to GitHub Pages
    runs-on: ubuntu-latest
    needs: [package]
    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
    permissions:
      contents: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Set up Helm
        uses: azure/setup-helm@v4
        with:
          version: '3.13.0'

      - name: Configure Git
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

      - name: Package Chart
        run: |
          helm package charts/karpenter-optimizer --destination ./charts

      - name: Checkout gh-pages branch
        run: |
          git fetch origin gh-pages:gh-pages || echo "gh-pages branch does not exist yet"
          git checkout gh-pages || git checkout -b gh-pages

      - name: Generate Index
        run: |
          # Copy new chart package
          cp charts/karpenter-optimizer-*.tgz . || true
          
          # Generate or update index.yaml
          if [ -f index.yaml ]; then
            helm repo index . --url https://kaskol10.github.io/karpenter-optimizer --merge index.yaml
          else
            helm repo index . --url https://kaskol10.github.io/karpenter-optimizer
          fi

      - name: Commit and Push
        run: |
          git add index.yaml *.tgz
          git diff --staged --quiet || git commit -m "Add chart version $(helm show chart charts/karpenter-optimizer | grep '^version:' | awk '{print $2}')"
          git push origin gh-pages

  validate-values:
    name: Validate Chart Values
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Set up Helm
        uses: azure/setup-helm@v4
        with:
          version: '3.13.0'

      - name: Validate Default Values
        run: |
          helm template karpenter-optimizer charts/karpenter-optimizer > /dev/null

      - name: Validate Ollama Configuration
        run: |
          helm template karpenter-optimizer charts/karpenter-optimizer \
            --set config.ollama.enabled=true \
            --set config.ollama.url=http://ollama:11434 \
            --set config.ollama.model=granite4:latest > /dev/null

      - name: Validate LiteLLM Configuration
        run: |
          helm template karpenter-optimizer charts/karpenter-optimizer \
            --set config.llm.enabled=true \
            --set config.llm.provider=litellm \
            --set config.llm.url=http://litellm:4000 \
            --set config.llm.model=gpt-3.5-turbo \
            --set config.llm.apiKey=test-key > /dev/null

      - name: Validate Kubernetes Configuration
        run: |
          helm template karpenter-optimizer charts/karpenter-optimizer \
            --set config.kubeconfigPath=/path/to/kubeconfig \
            --set config.kubeContext=my-context > /dev/null

      - name: Validate Ingress Configuration
        run: |
          helm template karpenter-optimizer charts/karpenter-optimizer \
            --set ingress.enabled=true \
            --set ingress.className=nginx \
            --set ingress.hosts[0].host=karpenter-optimizer.example.com > /dev/null

      - name: Validate Autoscaling Configuration
        run: |
          helm template karpenter-optimizer charts/karpenter-optimizer \
            --set autoscaling.enabled=true \
            --set autoscaling.minReplicas=2 \
            --set autoscaling.maxReplicas=5 > /dev/null

      - name: Validate Resource Limits
        run: |
          helm template karpenter-optimizer charts/karpenter-optimizer \
            --set resources.limits.cpu=1000m \
            --set resources.limits.memory=1Gi \
            --set resources.requests.cpu=500m \
            --set resources.requests.memory=512Mi > /dev/null

      - name: Validate All Values Together
        run: |
          helm template karpenter-optimizer charts/karpenter-optimizer \
            --set config.llm.enabled=true \
            --set config.llm.provider=litellm \
            --set config.llm.url=http://litellm:4000 \
            --set config.llm.model=gpt-3.5-turbo \
            --set ingress.enabled=true \
            --set autoscaling.enabled=true \
            --set resources.limits.cpu=1000m \
            --set resources.limits.memory=1Gi > /dev/null