name: Deploy Restart (kubectl rollout)
description: Validate KUBE_CONFIG, install kubectl, and perform a rollout restart of a Kubernetes deployment.

inputs:
  kube_config:
    description: Full kubeconfig YAML content (pass via secrets)
    required: true
  deployment_name:
    description: Name of the Kubernetes Deployment to restart
    required: true
  namespace:
    description: Kubernetes namespace of the deployment
    required: false
    default: default
  kube_version:
    description: Kubernetes version to download (stable, or a specific version like v1.31.0)
    required: false
    default: stable

runs:
  using: composite
  steps:
    - name: Check KUBE_CONFIG validity
      shell: bash
      env:
        KUBE_CONFIG: ${{ inputs.kube_config }}
      run: |
        if [ -z "${KUBE_CONFIG}" ] || [ "${KUBE_CONFIG}" = "" ] || [ "${KUBE_CONFIG// }" = "" ]; then
          echo "KUBE_CONFIG is not set or is empty."
          exit 1
        fi

    - name: Check out repository
      uses: actions/checkout@v4

    - name: Download and install kubectl
      shell: bash
      env:
        KUBE_VERSION: ${{ inputs.kube_version }}
      run: |
        apt-get update -y
        apt-get install -y curl
        if [ "${KUBE_VERSION}" = "stable" ]; then
          KUBE_VER="$(curl -L -s https://dl.k8s.io/release/stable.txt)"
        else
          KUBE_VER="${KUBE_VERSION}"
        fi
        curl -LO "https://dl.k8s.io/release/${KUBE_VER}/bin/linux/amd64/kubectl"
        install -m 0755 kubectl /usr/local/bin/kubectl
        kubectl version --client

    - name: Set up kubeconfig
      shell: bash
      env:
        KUBE_CONFIG: ${{ inputs.kube_config }}
      run: |
        echo "${KUBE_CONFIG}" > kubeconfig.yaml
        kubectl --kubeconfig=kubeconfig.yaml cluster-info

    - name: Rollout restart
      shell: bash
      env:
        DEPLOYMENT_NAME: ${{ inputs.deployment_name }}
        NAMESPACE: ${{ inputs.namespace }}
      run: |
        kubectl --kubeconfig=kubeconfig.yaml rollout restart \
          deployment "${DEPLOYMENT_NAME}" -n "${NAMESPACE}"