publish-helm-charts-release.yml

---
name: "Publish Helm Charts: Release"

on:
  release:
    types:
    - published

env:
  CHARTS_DIR: 'charts/ploigos-workflow'

jobs:
  # NOTE:
  #   * currently no way to filter on release actions
  #   * don't want to react to every releasee since the Helm Chart release creates releases
  #   * don't want to do do on tags with that filter since this workflow will update the release
  #     tag and would cause infinte actions to kick off
  check-if-valid-publish-event:
    runs-on: ubuntu-latest
    outputs:
      execute-workflow: ${{ steps.execute-workflow.outputs.execute-workflow }}
    steps:
    - name: Check if release should trigger this workflow ✅
      id: execute-workflow
      run: |
        if [[ ${GITHUB_REF} =~ v[0-9]+\.[0-9]+\.[0-9]+ ]]; then
          CONTINUE="true"
        else
          CONTINUE="false"
        fi

        echo "::set-output name=execute-workflow::${CONTINUE}"

  setup:
    runs-on: ubuntu-latest
    needs:
    - check-if-valid-publish-event
    if: needs.check-if-valid-publish-event.outputs.execute-workflow == 'true'
    outputs:
      helm-charts: ${{ steps.helm-charts.outputs.helm-charts }}
      helm-charts-new-semver: ${{ steps.helm-chart-semver.outputs.fullversion }}
    steps:
      - name: Checkout 🛎️
        uses: actions/checkout@v2

      - name: Determine Helm Charts to release ⚙️
        id: helm-charts
        run: ${GITHUB_WORKSPACE}/.github/scripts/determine-helm-charts-to-release.py

      - name: Helm Charts to Release 📌
        run: echo ${{ steps.helm-charts.outputs.helm-charts }}

      - name: Determine Helm Chart Version ⚙️
        id: helm-chart-semver
        uses: booxmedialtd/ws-action-parse-semver@v1
        with:
          input_string: "${{ github.ref }}"
          version_extractor_regex: '\/v(.*)$'

  lint:
    runs-on: ubuntu-latest
    needs:
    - setup
    strategy:
      fail-fast: false
    steps:
    - name: Checkout 🛎️
      uses: actions/checkout@v2
      with:
        fetch-depth: 0

    - name: Setup Helm 🧰
      uses: azure/setup-helm@v1
      with:
        version: v3.6.1

    - name: Setup Python 🧰🐍
      uses: actions/setup-python@v2
      with:
        python-version: 3.7

    - name: Setup chart-testing 🧰
      uses: helm/chart-testing-action@v2.1.0

    - name: Lint with chart-testing 🧪🖋
      run: ${GITHUB_WORKSPACE}/.github/scripts/lint.sh

  install-test:
    runs-on: ubuntu-latest
    needs:
    - setup
    steps:
    - name: Checkout 🛎️
      uses: actions/checkout@v2
      with:
        fetch-depth: 0

    - name: Setup Helm 🧰
      uses: azure/setup-helm@v1
      with:
        version: v3.6.1

    - name: Setup Python 🐍
      uses: actions/setup-python@v2
      with:
        python-version: 3.7

    - name: Setup chart-testing 🧰
      uses: helm/chart-testing-action@v2.1.0

    - name: Setup kind cluster 🧰
      uses: helm/kind-action@v1.2.0

    - name: Configure Kubernetes 🧰
      run: ${GITHUB_WORKSPACE}/.github/scripts/configure-kube.sh

    - name: Test install with chart-testing 🧪
      run: ${GITHUB_WORKSPACE}/.github/scripts/test.sh

  prepare-for-release:
    runs-on: ubuntu-latest
    needs:
    - setup
    - lint
    - install-test
    strategy:
      matrix:
        helm-chart: ${{ fromJson(needs.setup.outputs.helm-charts) }}
    steps:
    - name: Checkout 🛎️
      uses: actions/checkout@v2

    - name: Set up Python 🐍
      uses: actions/setup-python@v2
      with:
        python-version: 3.9

    - name: Update Helm Chart version 🖋
      uses: docker://mikefarah/yq:3
      with:
        args:
          yq write --inplace ${{ env.CHARTS_DIR }}/${{ matrix.helm-chart }}/Chart.yaml version ${{ needs.setup.outputs.helm-charts-new-semver }}

    # NOTE: workaround for https://github.com/helm/chart-releaser/issues/95
    - name: Create Chart.lock ⚙️
      run: |
        helm dependency update ${{ env.CHARTS_DIR }}/${{ matrix.helm-chart }}

    # NOTE:
    #  Chart.lock uploaded as workaround for https://github.com/helm/chart-releaser/issues/95
    - name: Upload Helm Chart prepared for release 🔺
      uses: actions/upload-artifact@v2
      with:
        name: ${{ matrix.helm-chart }}
        path: |
          ${{ env.CHARTS_DIR }}/${{ matrix.helm-chart }}/Chart.yaml
          ${{ env.CHARTS_DIR }}/${{ matrix.helm-chart }}/Chart.lock

  release:
    runs-on: ubuntu-latest
    needs:
    - setup
    - prepare-for-release
    steps:
    - name: Checkout 🛎️
      uses: actions/checkout@v2
      with:
        fetch-depth: 0

    - name: Download Helm Charts prepared to release 🔻
      id: download-helm-charts
      uses: actions/download-artifact@v2
      with:
        path: ${{ env.CHARTS_DIR }}

    - name: Push Updated Helm Chart Verions 💾
      uses: EndBug/add-and-commit@v7
      with:
        default_author: github_actions
        message: "Updated Helm Chart versions for latest merge to: ${{ github.ref }}"
        push: true
        branch: main

    - name: Setup Helm 🧰
      uses: azure/setup-helm@v1
      with:
        version: v3.6.1

    - name: Run chart-releaser 🚀
      uses: helm/chart-releaser-action@v1.2.1
      with:
        charts_dir: "${{ env.CHARTS_DIR }}"
      env:
        CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

    # NOTE:
    #   it is important this happens after the run of the chart-releaser so  that
    #   the cr tool can detect changes from the last tag (the tag that triggered this run)
    #   and this release.
    - name: Update triggering release git tag to included updated Helm Chart versions 🖋
      run: |
        git tag -d v${{ needs.setup.outputs.helm-charts-new-semver }}
        git tag v${{ needs.setup.outputs.helm-charts-new-semver }}
        git push origin v${{ needs.setup.outputs.helm-charts-new-semver }} --force

  update-release-tags:
    runs-on: ubuntu-latest
    needs:
    - release
    steps:
    - name: Checkout 🛎️
      uses: actions/checkout@v2
      with:
        fetch-depth: 0
        ref: main

    - name: Update release tags for latest major and minor releases 🖋
      uses: bewuethr/release-tracker-action@v1