name: helm-release
on:
  push:
    tags:
      - 'kyverno-chart-v*'
      - 'kyverno-policies-chart-v*'
      - 'kyverno-chart-*'
      - 'kyverno-policies-chart-*'

jobs:
  helm-tests:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # v2.4.0

      - name: Unshallow
        run: git fetch --prune --unshallow

      - uses: actions/setup-python@f38219332975fe8f9c04cca981d674bf22aea1d3 # v2.3.1
        with:
          python-version: 3.7

      - name: Set up chart-testing
        uses: helm/chart-testing-action@b0d4458c71155b54fcf33e11dd465dc923550009 # v2.0.1

      - name: Run chart-testing (lint)
        run: ct lint --target-branch=main --check-version-increment=false

  create-release:
    runs-on: ubuntu-latest
    needs: helm-tests
    permissions:
      contents: write
      packages: write
      id-token: write 
      pages: write
    steps:
      - name: Checkout
        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # v2.4.0
        with:
          fetch-depth: 0

      - name: Install Helm
        uses: azure/setup-helm@18bc76811624f360dbd7f18c2d4ecb32c7b87bab # v1.1
        with:
          version: v3.8.0

      - name: Install Cosign
        uses: sigstore/cosign-installer@7cc35d7fdbe70d4278a0c96779081e6fac665f88 # v2.8.0
        with:
          cosign-release: 'v1.13.0'


      - name: Set version
        run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV

      - name: Create charts tmp directory
        run: |
          mkdir charts-tmp
          if [[ "$RELEASE_VERSION" = "kyverno-policies-chart-v"* ]]; then
            cp -a charts/kyverno-policies charts-tmp/kyverno-policies
          fi
          if [[ "$RELEASE_VERSION" = "kyverno-chart-v"* ]]; then
            cp -a charts/kyverno charts-tmp/kyverno
          fi
          if [[ "$RELEASE_VERSION" = "kyverno-policies-chart-"* ]]; then
            cp -a charts/kyverno-policies charts-tmp/kyverno-policies
          fi
          if [[ "$RELEASE_VERSION" = "kyverno-chart-"* ]]; then
            cp -a charts/kyverno charts-tmp/kyverno
          fi

      - name: Run chart-releaser
        uses: stefanprodan/helm-gh-pages@b43a8719cc63fdb3aa943cc57359ab19118eab3f #v1.5.0
        with:
          token: "${{ secrets.GITHUB_TOKEN }}"
          linting: off
          charts_dir: charts-tmp

      - name: Login to GitHub Container Registry
        run: |
          helm registry login --username ${GITHUB_ACTOR} --password ${{ secrets.GITHUB_TOKEN }} ghcr.io
      
      - name: Publish OCI Charts
        env:
          COSIGN_EXPERIMENTAL: 1
        run: |
          for dir in `find charts-tmp -maxdepth 1 -mindepth 1 -type d -print`; do
            chart=${dir##*/}
            echo "Found chart: ${chart}"
            helm package charts-tmp/${chart} --destination .dist
            helm push .dist/${chart}-*.tgz oci://ghcr.io/${{ github.repository_owner }}/charts > .digest
            cosign login --username ${GITHUB_ACTOR} --password ${{ secrets.CR_PAT_ARTIFACTS }} ghcr.io
            cosign sign ghcr.io/${{ github.repository_owner }}/charts/${chart}@$(cat .digest | awk -F "[, ]+" '/Digest/{print $NF}')
          done