package-helm.yaml

name: Package Helm charts

on:
  push:
    tags:
      - v[0-9]+.[0-9]+.[0-9]+
    branches:
      - main
      - release-*

env:
  CHARTS_DIR: deployment/helm/
  UNSTABLE_CHARTS: unstable-helm-charts
  REGISTRY: ghcr.io
  REGISTRY_USER: ${{ github.repository_owner }}
  REGISTRY_PATH: ${{ github.repository }}

jobs:
  release:
    if: ${{ startsWith(github.ref, 'refs/tags/v') }}
    permissions:
      contents: write
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install Helm
        uses: azure/setup-helm@v4.0.0

      - name: Package Stable Helm Charts
        run: |
          find "$CHARTS_DIR" -name values.yaml | xargs -I '{}' \
              sed -e s"/pullPolicy:.*/pullPolicy: IfNotPresent/" -i '{}'
          helm package --version "$GITHUB_REF_NAME" --app-version "$GITHUB_REF_NAME" "$CHARTS_DIR"/*
          find . -name '*.tgz' -print | while read SRC_FILE; do
            DEST_FILE=$(echo $SRC_FILE | sed 's/v/helm-chart-v/g')
            mv $SRC_FILE $DEST_FILE
          done

      - name: Upload Stable Helm Charts to GitHub Release
        uses: softprops/action-gh-release@v1
        with:
          name: ${{ github.ref_name }}
          draft: true
          append_body: true
          files: nri-*helm-chart*.tgz

  unstable:
    if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
    concurrency:
      group: unstable-helm-charts
      cancel-in-progress: false
    permissions:
      packages: write
    runs-on: ubuntu-latest
    steps:
      - name: Deep Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Install Helm
        uses: azure/setup-helm@v4.0.0

      - name: Package Unstable Helm Charts
        id: package-charts
        run: |
          # For unstable chart version we use:
          #   - chart version: x.y-unstable derived from the latest tag x.y.z
          #   - image version: 'unstable'.
          majmin="$(git describe --tags | sed -E 's/(v[0-9]*\.[0-9]*).*$/\1/')"
          CHART_VERSION="${majmin}-unstable"
          if [  $GITHUB_REF_NAME = "main" ]; then
              APP_VERSION=unstable
          else
              APP_VERSION="${majmin}-unstable"
          fi
          # Package charts
          find "$CHARTS_DIR" -name values.yaml | xargs -I '{}' \
              sed -e s"/pullPolicy:.*/pullPolicy: Always/" -i '{}'
          helm package --version "$CHART_VERSION" --app-version $APP_VERSION "$CHARTS_DIR"/*
          find "$CHARTS_DIR" -name values.yaml | xargs -I '{}' \
              git checkout '{}'
          mkdir ../$UNSTABLE_CHARTS
          find . -name '*.tgz' -print | while read SRC_FILE; do
            DEST_FILE=$(echo $SRC_FILE | sed 's/v/helm-chart-v/g')
            mv -v $SRC_FILE ../$UNSTABLE_CHARTS/$DEST_FILE
          done

      - name: Log In To Registry
        run: |
          echo "${{ secrets.GITHUB_TOKEN }}" | \
              helm registry login ${{ env.REGISTRY }}/${{ env.REGISTRY_PATH }} -u ${{ env.REGISTRY_USER }} --password-stdin

      - name: Push Unstable Helm Charts To Registry
        shell: bash
        run: |
          # Notes:
          #   Currently we only publish unstable Helm charts from main/HEAD.
          #   We have no active cleanup of old unstable charts in place. In
          #   between new tags unstable chart have the same version, though.
          pushd ../$UNSTABLE_CHARTS
          for i in ./*.tgz; do
              helm push $i oci://${{ env.REGISTRY }}/${{ env.REGISTRY_PATH }}/helm-charts
          done
          popd