release.yaml

name: Release Helm charts

on:
  push:
    branches:
      - main
    paths:
      - '**/Chart.yaml'

jobs:
 get-list-of-charts:
    runs-on: ubuntu-latest
    name: 'Get list of charts to be released'
    outputs:
      charts: ${{ steps.get-charts.outputs.charts }}
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0
      - id: get-charts
        name: Get list of charts to be released
        run: |
          # Get list of Chart.yaml files changed in the last commit
          files_changed="$(git show --pretty="" --name-only | grep Chart.yaml)"

          charts=()
          for file in $files_changed; do
            count=$(git show "$file" | grep -c "+version" || true)
            if [ $count -eq 0 ]; then
              echo "No version change in $file"
              continue
            fi

            charts+=("$(echo "$file" | xargs dirname)")
          done

          if [ ${#charts[@]} -eq 0 ]; then
            echo "No charts to be released"
            echo "charts=none" >> "$GITHUB_OUTPUT"
          else
          echo "charts=$(jq 'split(" ")' -Rc <(echo ${charts[@]}))" >> "$GITHUB_OUTPUT"
          fi

 release-charts:
    runs-on: ubuntu-latest
    needs: get-list-of-charts
    if: needs.get-list-of-charts.outputs.charts != 'none'
    
    strategy:
      matrix:
        chart: ${{ fromJson(needs.get-list-of-charts.outputs.charts) }}

    steps:
      - name: Git Checkout
        uses: actions/checkout@v3

      - name: Setup Helm
        uses: azure/setup-helm@v3
        with:
          version: v3.5.3

      - name: Read Helm Chart version
        id: chart-version
        run: echo "version=$(awk '/^version:/ {print $2}' ${{ matrix.chart }}/Chart.yaml)" >> "$GITHUB_OUTPUT"

      - name: Helm Chart package file name
        id: file-name
        run: |
          echo "fileName=$(basename ${{ matrix.chart }})-${{ steps.chart-version.outputs.version }}.tgz"
          echo "fileName=$(basename ${{ matrix.chart }})-${{ steps.chart-version.outputs.version }}.tgz" >> "$GITHUB_OUTPUT"

      - name: Update dependencies
        run: helm dependency update ${{ matrix.chart }}

      - name: Package Helm Chart
        run: helm package ${{ matrix.chart }} --version ${{ steps.chart-version.outputs.version }}

      - name: Push Helm Chart
        uses: cloudsmith-io/action@v0.5.2
        with:
         api-key: ${{ secrets.CLOUDSMITH_API_KEY }}
         command: "push"
         format: "helm"
         owner: "tyk"
         repo: "helm"
         file: "${{ steps.file-name.outputs.fileName }}"