variables:
  KUBECTL: "quay.io/bitnami/kubectl:1.18"
  PRIME: "yes"
  CACHE: "persistent"        # one of "no", "in-memory", "persistent"
  TERMINATE: "yes"

stages:
    - prepare
    - build
    - deploy
    - terminate

prepare:
    stage: prepare
    only:
        variables:
            - $PRIME == "yes"
    image: 
        name: $KUBECTL
        entrypoint: [""]
    script:
        - kubectl delete secret gitlab-registry-credentials || true
        - "kubectl create secret docker-registry gitlab-registry-credentials \
                    --docker-server=$CI_REGISTRY \
                    --docker-username=image-registry \ 
                    --docker-password=$CI_REGISTRY_TOKEN"

claim-volume:
    stage: prepare
    except:
        variables:
            - $TERMINATE == "yes"
    only:
        variables:
            - $CACHE == "persistent"
    image: 
        name: $KUBECTL
        entrypoint: [""]
    script:
        - kubectl apply -f deploy/storage

build-prime:
    stage: build
    except:
        variables:
            - $TERMINATE == "yes"
    only:
        variables:
            - $PRIME == "yes"
    services:
        - docker:dind
    script:
        - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
        - cd prime
        - docker build -t $CI_REGISTRY_IMAGE/prime:latest .
        - docker push $CI_REGISTRY_IMAGE/prime:latest

deploy-prime:
    stage: deploy
    except:
        variables:
            - $TERMINATE == "yes"
    only:
        variables:
            - $PRIME == "yes"
    image: 
        name: $KUBECTL
        entrypoint: [""]
    script:
        - echo prime-$GITLAB_USER_ID.loki.th-luebeck.dev
        - wget -q https://github.com/mikefarah/yq/releases/download/3.4.0/yq_linux_amd64 -O ./yq && chmod +x yq
        - ./yq w -i deploy/prime/prime-ingress.yaml spec.rules[0].host prime-$GITLAB_USER_ID.loki.th-luebeck.dev
        - ./yq w -i deploy/prime/prime-ingress.yaml spec.tls[0].hosts[0] prime-$GITLAB_USER_ID.loki.th-luebeck.dev
        - kubectl apply -f deploy/prime

deploy-cache:
    stage: deploy
    except:
        variables:
            - $TERMINATE == "yes"
    only:
        variables:
            - $CACHE == "in-memory"
    image: 
        name: $KUBECTL
        entrypoint: [""]
    script:
        - kubectl delete -f deploy/persistent-redis || true
        - kubectl apply -f deploy/redis

deploy-persistent-cache:
    stage: deploy
    except:
        variables:
            - $TERMINATE == "yes"
    only:
        variables:
            - $CACHE == "persistent"
    image: 
        name: $KUBECTL
        entrypoint: [""]
    script:
        - kubectl delete -f deploy/redis || true
        - kubectl apply -f deploy/persistent-redis

terminate:
    stage: terminate
    only:
        variables:
            - $TERMINATE == "yes"
    image: 
        name: $KUBECTL
        entrypoint: [""]
    script:
        - kubectl delete -f deploy/redis || true
        - kubectl delete -f deploy/redis-persistent || true
        - kubectl delete -f deploy/prime || true
        - kubectl delete -f deploy/storage || true