name: Helm Upgrade
description: Login to an OCI registry, update chart dependencies, and run helm upgrade
inputs:
  DEPLOYMENT_NAME:
    description: "The Helm release name"
    required: true
  DEPLOYMENT_NAMESPACE:
    description: "The Kubernetes namespace (defaults to DEPLOYMENT_NAME)"
    default: ""
  REGISTRY:
    description: "OCI registry hostname for helm dependency login"
    required: true
  REGISTRY_USERNAME:
    description: "Username for OCI registry login"
    required: true
  REGISTRY_TOKEN:
    description: "Token for OCI registry login"
    required: true
  CHART_PATH:
    description: "Path to the Helm chart"
    default: "./helm"
  VALUES_FILE:
    description: "The values file to use"
    default: "./helm/values.yaml"
  IMAGE_PATH:
    description: "The registry path to the image (optional)"
    default: ""
  IMAGE_TAG:
    description: "The image tag to deploy (optional)"
    default: ""
  TAG_KEY:
    description: "Helm --set key for the image tag (e.g. deploy.api.tag)"
    default: ""

runs:
  using: composite
  steps:
    - name: Helm OCI Login
      shell: sh
      run: |
        echo "${{ inputs.REGISTRY_TOKEN }}" | helm registry login ${{ inputs.REGISTRY }} \
          --username ${{ inputs.REGISTRY_USERNAME }} \
          --password-stdin

    - name: Helm Upgrade
      shell: sh
      run: |
        NAMESPACE="${{ inputs.DEPLOYMENT_NAMESPACE }}"
        if [ -z "$NAMESPACE" ]; then NAMESPACE="${{ inputs.DEPLOYMENT_NAME }}"; fi
        SET_FLAGS=""
        if [ -n "${{ inputs.TAG_KEY }}" ] && [ -n "${{ inputs.IMAGE_TAG }}" ]; then
          SET_FLAGS="$SET_FLAGS --set ${{ inputs.TAG_KEY }}=${{ inputs.IMAGE_TAG }}"
        fi
        if [ -n "${{ inputs.IMAGE_PATH }}" ]; then
          SET_FLAGS="$SET_FLAGS --set image.repository=${{ inputs.IMAGE_PATH }}"
        fi
        helm dependency update ${{ inputs.CHART_PATH }}
        echo "Running: helm upgrade ${{ inputs.DEPLOYMENT_NAME }} ${{ inputs.CHART_PATH }} -n ${NAMESPACE} --values ${{ inputs.VALUES_FILE }}${SET_FLAGS}"
        helm upgrade ${{ inputs.DEPLOYMENT_NAME }} ${{ inputs.CHART_PATH }} -n ${NAMESPACE} --values ${{ inputs.VALUES_FILE }} $SET_FLAGS

    - name: Remove kubeconfig
      if: always()
      shell: sh
      run: rm -f ~/.kube/config