workflow:
  rules:
    # NOTE: don't run pipeline if commit is a Merge/Pull-Request
    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
      when: 'never'
    # Otherwise:
    - when: 'always'

variables:
  version: '0.0.$CI_PIPELINE_IID'
  k8sVersion: '1.20.5'
  MONGOIMAGE: 'mongo:4.2.3-bionic'

stages:
  - build
  - test
  - deploy
  - release

job_build-image:
  
  stage: build
  tags:
    - docker-privileged
  image: docker:20.10.12
  services:
    - name: docker:20.10.12-dind
  before_script:
    # - apk add --no-cache docker-compose
    - docker network create -d bridge my-build-network
    - docker pull mongo
    - docker run --name mongo --network my-build-network -d mongo
    # - docker run --network my-build-network --rm mongo mongo #--host some-mongo test
  script: 
    # - docker-compose up -f docker-compose.test.yml -d
    - docker build --file "./app/server/Dockerfile" --tag ${CI_REGISTRY_IMAGE}:${CI_PIPELINE_IID}-${CI_COMMIT_SHORT_SHA} .
      # NOTE: push image to local registry so that it can be accessed in subsequent jobs
    - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
    - docker push "${CI_REGISTRY_IMAGE}:${CI_PIPELINE_IID}-${CI_COMMIT_SHORT_SHA}"
  after_script:
    # - docker-compose down
    - docker image rm --force "${CI_REGISTRY_IMAGE}:${CI_PIPELINE_IID}-${CI_COMMIT_SHORT_SHA}"
    - docker image rm --force mongo
    - docker network rm my-build-network
    - docker network ls
    - docker network prune
    - echo y
    - docker network ls


job_test-image:
  stage: test
  image: docker:20.10.12
  tags:
    - docker-privileged
  services:
    - name: docker:20.10.12-dind
  variables:
    # NOTE: some random port that hopefully is free on the runner
    outerPort: '38080'
  before_script:
    - docker network create -d bridge test-img-network
    # - apk add --no-cache docker-compose
    # - docker-compose -f docker-compose.mongo.yml up 
    - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
    - docker pull mongo
    - docker run --name mongo --network test-img-network -d mongo
    - echo ${CI_REGISTRY_IMAGE}
    - echo ${CI_PIPELINE_IID}
    - echo ${CI_COMMIT_SHORT_SHA}

    # - docker pull "${CI_REGISTRY_IMAGE}:${CI_PIPELINE_IID}-${CI_COMMIT_SHORT_SHA}"

  script:
    # - docker-compose -f docker-compose.test.yml up
    - docker build --file "./app/server/Dockerfile.test" --tag testimg:latest .

    - docker run
      --publish "${outerPort}:3002"
      --network=test-img-network
      --env MONGODB_URL=mongodb://mongo:27017
      --env JWT_SECRET=test
      --name "${CI_PROJECT_ID}-${CI_PIPELINE_IID}"
      "testimg:latest"

  after_script:
    # NOTE: clean up after test run (stop and remove container)
    - docker rm --force "${CI_PROJECT_ID}-${CI_PIPELINE_IID}"
    - docker image rm --force mongo
    - docker network rm test-img-network
    - docker network ls
    - docker network prune
    # - docker-compose down


job_deploy-new-version:
  stage: deploy
  needs:
    - job_build-image
    - job_test-image
  tags:
    - docker
  image:
    name: quay.io/bitnami/kubectl:1.20.5
    entrypoint: ['']
  script:
    - VERSION="${CI_PIPELINE_IID}-${CI_COMMIT_SHORT_SHA}"
    - IMAGE="${CI_REGISTRY_IMAGE}:${VERSION}"
    - DEPLOYMENT_MANIFEST=$(sed -e "s,{{image}},${IMAGE},g" ./infra/deployment.yaml.tmpl)
    - echo "${DEPLOYMENT_MANIFEST}" | kubectl apply
        --kubeconfig ${SECRET_KUBECONFIG_PATH}
        --namespace devops-lecture-showcase
        --filename -


job_create-release:
  stage: release
  only:
    - stable
  needs:
    - job_build-image
  tags:
    - docker-privileged
  image: docker:20.10.12
  services:
    - name: docker:20.10.12-dind
  before_script:
    - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
    - docker pull "${CI_REGISTRY_IMAGE}:${CI_PIPELINE_IID}-${CI_COMMIT_SHORT_SHA}"
  script:
    - VERSION=$(cat ./src/package.json | docker run --interactive stedolan/jq --raw-output '.version')
    - docker tag "${CI_REGISTRY_IMAGE}:${CI_PIPELINE_IID}-${CI_COMMIT_SHORT_SHA}" "${CI_REGISTRY_IMAGE}:${VERSION}"
    - docker push "${CI_REGISTRY_IMAGE}:${VERSION}"
    - git tag "v${VERSION}" && git push origin "v${VERSION}"
  after_script:
    - docker image rm --force
        $(docker images --format '{{.Repository}}{{.Tag}}' | grep '${CI_REGISTRY_IMAGE}')

job_deploy-new-release:
  only:
    - stable
  tags:
    - docker-privileged
  image: docker:20.10.12
  services:
    - name: docker:20.10.12-dind
  script:
    - VERSION=$(cat ./src/package.json | docker run --interactive stedolan/jq --raw-output '.version')
    - IMAGE="${CI_REGISTRY_IMAGE}:${VERSION}"
    - DEPLOYMENT_MANIFEST=$(sed -e "s/{{image}}/${IMAGE}/g" infra/deployment.yaml.tmpl)
    - echo "${DEPLOYMENT_MANIFEST}" | docker run
        --rm
        --volume ${SECRET_KUBECONFIG_PATH}:/.kube/config
        quay.io/bitnami/kubectl:1.20.5
        apply --namespace devops-lecture-showcase --filename -


job_update-infra:
  stage: deploy
  rules:
    - changes:
        - infra/*
  tags:
    - docker
  image:
    name: quay.io/bitnami/kubectl:1.20.5
    entrypoint: ['']
  script:
    - kubectl apply
        --kubeconfig ${SECRET_KUBECONFIG_PATH}
        --namespace devops-lecture-showcase
        --filename ./infra