name: Helm Chart

on:
  push:
    branches: [main]
    paths:
      - "helm/**"
  pull_request:
    paths:
      - "helm/**"

permissions:
  contents: read
  packages: write

env:
  CHART_PATH: helm/huly
  OCI_REGISTRY: oci://ghcr.io/${{ github.repository_owner }}/charts

jobs:
  lint:
    name: Lint & Template
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: azure/setup-helm@v4
      - run: helm lint ${{ env.CHART_PATH }}
      - run: helm template huly ${{ env.CHART_PATH }} --set domain=ci.example.com

  publish:
    name: Package & Push OCI
    needs: lint
    if: github.ref == 'refs/heads/main'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: azure/setup-helm@v4

      - name: Extract chart version
        id: chart
        run: |
          version=$(grep '^version:' ${{ env.CHART_PATH }}/Chart.yaml | awk '{print $2}')
          echo "version=$version" >> "$GITHUB_OUTPUT"

      - name: Login to GHCR
        run: echo "${{ secrets.GITHUB_TOKEN }}" | helm registry login ghcr.io -u ${{ github.actor }} --password-stdin

      - name: Package chart
        run: helm package ${{ env.CHART_PATH }} -d /tmp/charts

      - name: Push to OCI registry
        run: helm push /tmp/charts/huly-${{ steps.chart.outputs.version }}.tgz ${{ env.OCI_REGISTRY }}