octopus-publish-chart.yml

name: Publish Octopus Deploy Chart

on:
  push:
    branches:
    - main
    - release/octopus-deploy/v*
  workflow_dispatch:

jobs:
  paths_filter:
    runs-on: ubuntu-latest
    outputs:
      result: ${{ steps.filter.outputs.octopus-deploy }}
    steps:
      - uses: actions/checkout@v4

      - uses: dorny/paths-filter@v3
        id: filter
        with:
          filters: |
            octopus-deploy:
              - charts/octopus-deploy/**
              - .github/workflows/octopus-publish-chart.yml
          

  test:
    needs: paths_filter
    if: needs.paths_filter.outputs.result == 'true'
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Install Helm
        uses: azure/setup-helm@v3
        with:
          version: 'v3.15.3'

      - name: Run Helm unit tests
        run: |
          helm plugin install https://github.com/helm-unittest/helm-unittest.git
          helm unittest charts/octopus-deploy
            
      - name: Login to GitHub container registry
        run: echo ${{ secrets.GITHUB_TOKEN }} | helm registry login ghcr.io -u  ${{github.actor}} --password-stdin

      - name: Parse Chart config
        uses: pietrobolcato/action-read-yaml@1.1.0
        id: read_chart_yaml
        with:
          config: ${{ github.workspace }}/charts/octopus-deploy/Chart.yaml

      - name: Get branch names
        id: branch_names
        uses: OctopusDeploy/util-actions/current-branch-name@current-branch-name.0.1.0

      - name: Generate chart version
        id: version
        shell: bash
        run: |
          chart_version="${{ steps.read_chart_yaml.outputs.version }}"
          pre_release=""

          if [[ "${{steps.branch_names.outputs.branch_name}}" != "main" ]]
          then
              # underscores in branches make for illegal version-string, replace with "-"
              cleansed_branch=`echo ${{steps.branch_names.outputs.branch_name}} | sed s/_/-/g`
              pre_release="-${cleansed_branch}-$(date +'%Y%m%d%H%M%S')"
          fi

          full_version="$chart_version$pre_release"

          echo "CHART_VERSION=$full_version" >> $GITHUB_OUTPUT
          echo "PACKAGE_NAME=octopusdeploy-helm-$full_version.tgz" >> $GITHUB_OUTPUT

      - name: Package Chart
        run: helm package --version '${{ steps.version.outputs.CHART_VERSION }}' 'charts/octopus-deploy'
        
      - uses: actions/upload-artifact@v4
        name: Upload packaged chart
        with:
          name: '${{ steps.version.outputs.PACKAGE_NAME }}'
          path: '${{ github.workspace }}/octopusdeploy-helm-${{ steps.version.outputs.CHART_VERSION }}.tgz'

      # Only push the chart for real if it's a branch build OR it's the versioning PR
      - name: Push Chart
        if: ${{ github.ref != 'refs/heads/main' || (github.ref == 'refs/heads/main' && startsWith(github.event.commits[0].message, 'Version Charts')) }}
        run: helm push "octopusdeploy-helm-${{ steps.version.outputs.CHART_VERSION }}.tgz" oci://ghcr.io/octopusdeploy