helm-diff.yaml

name: Helm Diff
on:
  pull_request:
    types:
      - assigned
      - opened
      - synchronize
      - reopened
      - edited
      - ready_for_review
      - review_requested
jobs:
  helm-diff:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v1
      - name: 'Get Previous tag'
        id: previousgittag
        continue-on-error: true
        uses: "WyriHaximus/github-action-get-previous-tag@v1"
        env:
          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
      - name: Prep helm chart
        run: |
          mv ./.helm/zerotier/Chart.yaml ./.helm/zerotier/Chart.old.yaml &&
          cat ./.helm/zerotier/Chart.old.yaml | grep -v appVersion > ./.helm/zerotier/Chart.yaml &&
          rm ./.helm/zerotier/Chart.old.yaml
          echo -e "\r\nappVersion: ${{ steps.previousgittag.outputs.tag }}\r\n" >> ./.helm/zerotier/Chart.yaml &&
          cat ./.helm/zerotier/Chart.yaml
      - name: Deploy
        uses: WyriHaximus/github-action-helm3@v2
        id: diff
        with:
          exec: |
            helm plugin install https://github.com/databus23/helm-diff
            OUTPUT=$(helm diff upgrade zerotier ./.helm/zerotier --namespace zerotier --no-color)
            OUTPUT="${OUTPUT//'%'/'%25'}"
            OUTPUT="${OUTPUT//$'\n'/'%0A'}"
            OUTPUT="${OUTPUT//$'\r'/'%0D'}"
            echo "::set-output name=diff::$OUTPUT"
          kubeconfig: '${{ secrets.KUBECONFIG }}'
      - name: 'Upsert comment'
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          message: |
            Helm Diff:
            ```diff
            ${{ steps.diff.outputs.diff }}
            ```