package-helm.yaml

name: Package Helm charts

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

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@v5

      - name: Import GPG key
        uses: crazy-max/ghaction-import-gpg@v6
        id: import-gpg
        with:
          gpg_private_key: ${{ secrets.BOT_GPG_PRIVATE_KEY }}
          passphrase: ${{ secrets.BOT_PASSPHRASE }}

      - name: Export GPG private key
        run: |
          gpg --batch \
              --yes \
              --pinentry-mode loopback \
              --passphrase ${{ secrets.BOT_PASSPHRASE }} \
              --export-secret-keys ${{ secrets.BOT_GPG_ID }} \
              > ~/.gnupg/secring.gpg

      - name: Verify GPG secret key file
        run: |
          if [ ! -f ~/.gnupg/secring.gpg ]; then
            echo "Error: GPG secret key file '~/.gnupg/secring.gpg' not found!" >&2
            exit 1
          fi

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

      - name: Package Stable Helm Charts
        run: |
          find "$CHARTS_DIR" -name values.yaml | xargs -I '{}' \
              sed -e s"/pullPolicy:.*/pullPolicy: IfNotPresent/" -i '{}'
          for chart in "$CHARTS_DIR"/*; do
              echo ${{ secrets.BOT_PASSPHRASE }} | \
                helm package \
                  --sign \
                  --key ${{ steps.import-gpg.outputs.email }} \
                  --keyring ~/.gnupg/secring.gpg \
                  --version "$GITHUB_REF_NAME" \
                  --app-version "$GITHUB_REF_NAME" \
                  --passphrase-file "-" \
                  $chart;
          done
          find . -name '*.tgz' -print | while read SRC_FILE; do
            DEST_FILE=$(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
            nri-*helm-chart*.tgz.prov

  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@v5
        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"
          variant=""
          case $GITHUB_REF_NAME in
              main)
                  APP_VERSION=unstable
                  ;;
              release-*)
                  APP_VERSION="${majmin}-unstable"
                  ;;
              test/build/*)
                  variant="${GITHUB_REF_NAME#test/build/}"
                  variant="${variant//\//-}"
                  tag="${majmin}-${variant}-unstable"
                  APP_VERSION="${majmin}-${variant}-unstable"
                  CHART_VERSION="${majmin}-${variant}-unstable"
                  ;;
          esac
          echo "- Using APP_VERSION=$APP_VERSION"
          echo "        CHART_VERSION=$CHART_VERSION"
          # Package charts
          find "$CHARTS_DIR" -name values.yaml | xargs -I '{}' \
              sed -e s"/pullPolicy:.*/pullPolicy: Always/" -i '{}'
          orig="ghcr.io/containers/nri-plugins"
          repo="${{ env.REGISTRY }}/${{ env.REGISTRY_PATH }}"
          find "$CHARTS_DIR" -name values.yaml | xargs -I '{}' \
              sed -e s"|  name: $orig/|  name: $repo/|g" -i '{}'
          helm package --version "$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 }} -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