name: Helm OCI CI

on:
  workflow_call:
    inputs:
      chart-path:
        description: "Path to the Helm chart directory"
        required: false
        default: "./helm"
        type: string
      registry:
        description: "OCI registry URL"
        required: false
        default: "gitea.lulz.ltd/helm"
        type: string
    secrets:
      CI_BOT_USERNAME:
        required: true
      CI_BOT_TOKEN:
        required: true

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    env:
      REGISTRY: ${{ inputs.registry }}
      HELM_USER: ${{ secrets.CI_BOT_USERNAME }}
      HELM_PASS: ${{ secrets.CI_BOT_TOKEN }}
    steps:
      # Checkout repo
      - name: Checkout repository
        uses: actions/checkout@v3

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

      # Extract chart name & version
      - name: Get Chart Info
        id: chart
        run: |
          NAME=$(helm show chart ${{ inputs.chart-path }} | grep '^name:' | awk '{print $2}')
          VERSION=$(helm show chart ${{ inputs.chart-path }} | grep '^version:' | awk '{print $2}')
          echo "chart_name=$NAME" >> $GITHUB_ENV
          echo "chart_version=$VERSION" >> $GITHUB_ENV

      # Login to OCI registry
      - name: Helm OCI Login
        run: |
          echo "$HELM_PASS" | helm registry login "$REGISTRY" \
            --username "$HELM_USER" \
            --password-stdin

      # Package Helm chart
      - name: Package Helm Chart
        run: helm package ${{ inputs.chart-path }}

      # Push chart to OCI registry
      - name: Push Helm Chart
        run: helm push ${chart_name}-${chart_version}.tgz oci://$REGISTRY