name: PR Diff for Helm chart
on:
  pull_request:

jobs:
  diff:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: azure/setup-helm@v3
      - id: diff
        run: |
          alias helm_test_template='helm template --debug \
            --set serviceAccount.create=true \
            --set priorityClassName=high \
            --set podAnnotations.test=annotation \
            --set extraEnvVars[0].name=TEST_NAME \
            --set extraEnvVars[0].value=TEST_VALUE \
            --set secrets.htpasswd=abc \
            --set tlsSecretName=abc \
            --set garbageCollect.enabled=true \
            --set proxy.enabled=true \
            --set storage=s3 /
            --set secrets.s3.secretKey=abc /
            --set secrets.s3.accessKey=def /
            --set s3.region=us-42 /
            --set s3.bucket=abc /
            --set s3.encrypt=abc'
          OUTPUT="$(diff -u <(helm_test_template ${{ github.server_url }}/${{ github.repository }}/archive/refs/heads/${{ github.base_ref }}.tar.gz) <(helm_test_template .))"
          echo "::set-output name=result::$OUTPUT"
      - uses: marocchino/sticky-pull-request-comment@v2
        with:
          message: |
            This PR results in the following smoketest diff:
            ```diff
            ${{ steps.diff.outputs.result }}
            ```