name: "helm: publish charts"
on:
  push:
    tags:
      - '*'
  workflow_dispatch:

permissions:
  contents: write
  pages: write

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
        with:
          fetch-depth: 0

      - name: Set up Helm
        uses: azure/setup-helm@v4
        with:
          version: v3.18.4

      - name: Get chart version
        id: chart_version
        run: |
          CHART_VERSION=$(grep '^version:' k8s/charts/seaweedfs/Chart.yaml | awk '{print $2}')
          echo "version=$CHART_VERSION" >> $GITHUB_OUTPUT
          echo "Chart version: $CHART_VERSION"

      - name: Package Helm chart
        run: |
          helm package k8s/charts/seaweedfs --destination .cr-release-packages

      - name: Create chart release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: seaweedfs-${{ steps.chart_version.outputs.version }}
          name: seaweedfs-${{ steps.chart_version.outputs.version }}
          files: .cr-release-packages/seaweedfs-${{ steps.chart_version.outputs.version }}.tgz
          fail_on_unmatched_files: true
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Checkout gh-pages branch
        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
        with:
          ref: gh-pages
          path: gh-pages

      - name: Update Helm repo index
        run: |
          mkdir -p gh-pages/helm
          CHART_VERSION="${{ steps.chart_version.outputs.version }}"
          
          # Merge with existing index.yaml if it exists
          cd gh-pages/helm
          if [ -f index.yaml ]; then
            # Use helm to merge the indexes
            cp index.yaml old-index.yaml
            cp ../../.cr-release-packages/seaweedfs-${CHART_VERSION}.tgz .
            helm repo index . --url https://github.com/${{ github.repository }}/releases/download/seaweedfs-${CHART_VERSION} --merge old-index.yaml
            rm -f old-index.yaml seaweedfs-${CHART_VERSION}.tgz
          else
            cp ../../.cr-release-packages/seaweedfs-${CHART_VERSION}.tgz .
            helm repo index . --url https://github.com/${{ github.repository }}/releases/download/seaweedfs-${CHART_VERSION}
            rm -f seaweedfs-${CHART_VERSION}.tgz
          fi

      - name: Commit and push index.yaml
        run: |
          cd gh-pages
          git config user.name "${{ github.actor }}"
          git config user.email "${{ github.actor }}@users.noreply.github.com"
          git add helm/index.yaml
          git commit -m "Update Helm chart index for seaweedfs-${{ steps.chart_version.outputs.version }}" || echo "No changes to commit"
          git push