name: Release Helm Chart

on:
  push:
    branches: [main]
    paths:
      - 'charts/**'

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout groombook
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Checkout groombook.dev (Helm chart host)
        uses: actions/checkout@v4
        with:
          repository: groombook/groombook.dev
          path: gitea-pages
          token: ${{ gitea.token }}

      - name: Install Helm
        uses: azure/setup-helm@v4

      - name: Update Helm dependencies
        run: helm dependency update charts/groombook

      - name: Package chart
        run: |
          mkdir -p gitea-pages/charts
          helm package charts/groombook -d gitea-pages/charts

      - name: Update repo index
        run: |
          # TODO: update URL once Gitea Pages hosting is confirmed
          CHART_URL="${HELM_CHART_URL:-https://groombook.farh.net/charts}"
          if [ -f gitea-pages/charts/index.yaml ]; then
            helm repo index gitea-pages/charts --merge gitea-pages/charts/index.yaml --url "$CHART_URL"
          else
            helm repo index gitea-pages/charts --url "$CHART_URL"
          fi

      - name: Push to groombook.dev
        run: |
          cd gitea-pages
          git config user.name "groombook-engineer[bot]"
          git config user.email "groombook-engineer[bot]@git.farh.net"
          git add charts/
          git diff --staged --quiet && echo 'No chart changes' && exit 0
          git commit -m "Update Helm chart repository"
          git push