image: alpine:latest

stages:
  - test
  - staging
  - production

test:
  stage: test
  script:
    - exit 0
  only:
    - triggers
    - branches

staging:
  stage: staging
  script:
  - install_dependencies
  - ensure_namespace
  - install_tiller
  - deploy
  variables:
    KUBE_NAMESPACE: staging
  environment:
    name: staging
    url: http://staging
  only:
    refs:
      - master
    kubernetes: active
  except:
    - triggers

production:
  stage: production
  script:
    - install_dependencies
    - ensure_namespace
    - install_tiller
    - deploy
  variables:
    KUBE_NAMESPACE: production
  environment:
    name: production
    url: http://production
  only:
    refs:
      - master
    kubernetes: active

.auto_devops: &auto_devops |
  # Auto DevOps variables and functions
  [[ "$TRACE" ]] && set -x
  export CI_REGISTRY="index.docker.io"
  export CI_APPLICATION_REPOSITORY=$CI_REGISTRY/$CI_PROJECT_PATH
  export CI_APPLICATION_TAG=$CI_COMMIT_REF_SLUG
  export CI_CONTAINER_NAME=ci_job_build_${CI_JOB_ID}
  export TILLER_NAMESPACE="kube-system"

  function deploy() {
    echo $KUBE_NAMESPACE
    track="${1-stable}"
    name="$CI_ENVIRONMENT_SLUG"
    helm dep build reddit

    # for microservice in $(helm dep ls | grep "file://" | awk '{print $1}') ; do
    #   SET_VERSION="$SET_VERSION \ --set $microservice.image.tag='$(curl http://gitlab-gitlab/$CI_PROJECT_NAMESPACE/ui/raw/master/VERSION)' "

    helm upgrade --install \
      --wait \
      --set ui.ingress.host="$host" \
      --set ui.image.tag="$(curl http://gitlab-gitlab/$CI_PROJECT_NAMESPACE/ui/raw/master/VERSION)" \
      --set post.image.tag="$(curl http://gitlab-gitlab/$CI_PROJECT_NAMESPACE/post/raw/master/VERSION)" \
      --set comment.image.tag="$(curl http://gitlab-gitlab/$CI_PROJECT_NAMESPACE/comment/raw/master/VERSION)" \
      --namespace="$KUBE_NAMESPACE" \
      --version="$CI_PIPELINE_ID-$CI_JOB_ID" \
      "$name" \
      reddit
  }

  function install_dependencies() {

    apk add -U openssl curl tar gzip bash ca-certificates git
    wget -q -O /etc/apk/keys/sgerrand.rsa.pub https://raw.githubusercontent.com/sgerrand/alpine-pkg-glibc/master/sgerrand.rsa.pub
    wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.23-r3/glibc-2.23-r3.apk
    apk add glibc-2.23-r3.apk
    rm glibc-2.23-r3.apk

    curl https://kubernetes-helm.storage.googleapis.com/helm-v2.7.2-linux-amd64.tar.gz | tar zx

    mv linux-amd64/helm /usr/bin/
    helm version --client

    curl -L -o /usr/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl
    chmod +x /usr/bin/kubectl
    kubectl version --client
  }

  function ensure_namespace() {
    kubectl describe namespace "$KUBE_NAMESPACE" || kubectl create namespace "$KUBE_NAMESPACE"
  }

  function install_tiller() {
    echo "Checking Tiller..."
    helm init --upgrade
    kubectl rollout status -n "$TILLER_NAMESPACE" -w "deployment/tiller-deploy"
    if ! helm version --debug; then
      echo "Failed to init Tiller."
      return 1
    fi
    echo ""
  }

  function delete() {
    track="${1-stable}"
    name="$CI_ENVIRONMENT_SLUG"
    helm delete "$name" || true
  }

before_script:
  - *auto_devops