main.yaml

name: Helm Chart Workflow

on:
  push:
    branches:
      - mainline

  pull_request:
    branches:
      - mainline

jobs:
  Helm:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Setup Helm
        uses: azure/setup-helm@v3
        with:
          version: v3.14.0

      - name: Output Template
        if: github.event_name == 'pull_request'
        run: |
          changed_files=($(git diff --name-only mainline...${{ github.head_ref }} | grep '^charts/' | cut -d'/' -f1,2 | uniq))

          for chart in "${changed_files[@]}"
          do
            if [ -d "${chart}" ]; then
              (
                cd "${chart}"
                echo "Generating template for ${chart}"
              
                helm template \
                  --namespace "${chart}" \
                  "${chart}" .
              )
            fi
          done

      - name: Package Helm Chart
        if: github.event_name == 'push'
        working-directory: ${{ github.workspace }}
        run: |
          helm package charts/langkit

      - name: Login to GHCR
        if: github.event_name == 'push'
        run: |
          docker login ghcr.io \
            -u ${{ github.repository_owner }} \
            --password-stdin < <(echo "${{ secrets.GITHUB_TOKEN }}")

      - name: Publish Helm Chart to GHCR
        if: github.event_name == 'push'
        run: |
          chart_version=$(grep 'version:' ./charts/langkit/Chart.yaml | tail -n1 | awk '{ print $2}')
          ghcr_chart="ghcr.io/${{ github.repository_owner }}/${{ github.repository }}:${chart_version}"
          helm push "langkit-${chart_version}".tgz oci://ghcr.io/${{ github.repository_owner }}