name: Helm Release

on:
  release:
    types: [published]
    branches:
      - main
      - nightly
  push:
    branches:
      - nightly
      - main
    paths:
      - "functions/kubernetes/charts/**"
  workflow_dispatch:

permissions:
  contents: read
  packages: write

jobs:
  main:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Helm
        uses: azure/setup-helm@v4
        with:
          version: v3.18.4 # I run it locally so I know it works :b

      - name: Verify Helm
        run: helm version

      - name: Set versions
        run: |
          if [[ ${{ github.event_name }} == 'release' ]]; then
            TAG_NAME="${{ github.event.release.tag_name }}"

            # Remove the v prefix
            VERSION=${TAG_NAME#v}

            APP_VERSION="${VERSION}"
            CHART_VERSION="${VERSION}"
          else
            APP_VERSION="latest"
            CHART_VERSION="2.2.0"
          fi

          echo "APP_VERSION set to ${APP_VERSION}"
          echo "CHART_VERSION set to ${CHART_VERSION}. Validating..."

          # https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string
          SEMVER_REGEX="^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$"

          if echo "${CHART_VERSION}" | grep -Pq "${SEMVER_REGEX}"; then
            echo "${CHART_VERSION} is a valid SemVer string";
          else
            echo "${CHART_VERSION} is an invalid SemVer string";
            exit 1;
          fi

          echo "CHART_VERSION=${CHART_VERSION}" >> "$GITHUB_ENV"
          echo "APP_VERSION=${APP_VERSION}" >> "$GITHUB_ENV"

      - name: Update helm dependencies
        run: helm dependency update ./functions/kubernetes/charts/shuffle

      - name: Package Helm chart
        run: helm package ./functions/kubernetes/charts/shuffle --version "${CHART_VERSION}" --app-version="${APP_VERSION}" --destination ./functions/kubernetes/charts

      - name: Login to OCI registry (ghcr.io)
        run: helm registry login ghcr.io --username ${{ github.actor }} --password ${{ secrets.GITHUB_TOKEN }}

      - name: Push helm chart
        run: helm push ./functions/kubernetes/charts/shuffle-*.tgz oci://ghcr.io/shuffle/charts