.kubernetes-config:
  variables: 
    KUBECTL_VERSION: "1.21.1-release"
    DOCKER_REGCRED: "nexus-regcred"
    KUBERNETES_MANIFEST_TEMPLATES: 
      src/deployment.yaml 
      src/service.yaml
      src/config-map.yaml
  image:
    name: private.nexus-regs.docker:8086/dimmaryanto93/k8s-kubectl-helm:${KUBECTL_VERSION}
  before_script:
    - echo "set kubernetes namespaces to $KUBE_NAMESPACE"
    - kubectl config set-context --current --namespace="$KUBE_NAMESPACE"
    - mkdir -p .docker/ && cat $DOCKER_CONF_JSON > .docker/config.json
    - export NEXUS_REGCRED_IS_EXIST=$(kubectl get secret $DOCKER_REGCRED -n $KUBE_NAMESPACE -o json --ignore-not-found=true | grep $DOCKER_REGCRED | wc -l)
    - echo "kubernetes registry is exist => ${NEXUS_REGCRED_IS_EXIST}"
    - |
      if [ ${NEXUS_REGCRED_IS_EXIST} -eq 0 ]; 
        then kubectl create secret generic $DOCKER_REGCRED --from-file=".dockerconfigjson=.docker/config.json" --type="kubernetes.io/dockerconfigjson" --namespace=$KUBE_NAMESPACE
        else echo "Docker Registry Credential was created";
      fi

.kubernetes-deploy:
  extends: .kubernetes-config
  script:
    - >
      for TEMPLATE in ${KUBERNETES_MANIFEST_TEMPLATES};
      do
          echo "--------------------------------";
          echo "kubernetes manifest => $TEMPLATE";
          envsubst < $TEMPLATE;
          envsubst < $TEMPLATE | kubectl apply -n $KUBE_NAMESPACE -f -;
          echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>";
      done

.kubernetes-stop-deploy:
  extends: .kubernetes-config
  when: manual
  script:
    - |
      for TEMPLATE in ${KUBERNETES_MANIFEST_TEMPLATES};
      do
          envsubst < $TEMPLATE | kubectl delete -n $KUBE_NAMESPACE -f -;
      done
    - kubectl delete secret $DOCKER_REGCRED -n $KUBE_NAMESPACE
  allow_failure: true

.kustomize-deploy:
  extends: .kubernetes-config
  script:
    - >
      for TEMPLATE in ${KUBERNETES_MANIFEST_TEMPLATES};
      do
          echo "--------------------------------";
          echo "kubernetes manifest => $TEMPLATE";
          kubectl kustomize $TEMPLATE
          kubectl kustomize $TEMPLATE | envsubst | kubectl apply -f -;
          echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>";
      done

.kustomize-stop-deploy:
  extends: .kubernetes-config
  when: manual
  script:
    - |
      for TEMPLATE in ${KUBERNETES_MANIFEST_TEMPLATES};
      do
          kubectl kustomize $TEMPLATE
          kubectl kustomize $TEMPLATE | envsubst | kubectl delete --ignore-not-found=true -f -;
      done
    - kubectl delete secret --ignore-not-found=true $DOCKER_REGCRED -n $KUBE_NAMESPACE
  allow_failure: true