variables:
  CI_REGISTRY_IMAGE_GRADLE: "$CI_REGISTRY_IMAGE:latest-backend-gradle"
  CI_REGISTRY_IMAGE_BACKEND: "$CI_REGISTRY_IMAGE:latest-backend"

before_script:
  - docker info
  - docker login -u $CI_USERNAME -p $CI_ACCESS_TOKEN $CI_REGISTRY

stages:
  - build
  - test
  - package
  - deploy

build-backend:
  stage: build
  script:
    - docker pull $CI_REGISTRY_IMAGE_GRADLE || true
    - docker build --cache-from $CI_REGISTRY_IMAGE_GRADLE -f gradle.Dockerfile -t $CI_REGISTRY_IMAGE_GRADLE --build-arg JDK_VERSIN=$JDK_VERSION --build-arg GRADLE_VERSION=$GRADLE_VERSION .
    - docker push $CI_REGISTRY_IMAGE_GRADLE

test-backend:
  stage: test
  needs: ['build-backend']
  variables:
    TEST_CONTAINER_NAME: "cre_backend_gradle_tests"
  script:
    - docker run --name $TEST_CONTAINER_NAME --rm $CI_REGISTRY_IMAGE_GRADLE gradle test

package-backend:
  stage: package
  needs: ['test-backend']
  variables:
    PACKAGE_CONTAINER_NAME: "cre_backend_gradle_package"
  script:
    - docker run --name $PACKAGE_CONTAINER_NAME $CI_REGISTRY_IMAGE_GRADLE gradle buildBackend
    - docker cp $PACKAGE_CONTAINER_NAME:/usr/src/cre/dist/backend/ColorRecipesExplorer.jar ColorRecipesExplorer-$CI_PIPELINE_IID.jar
    - docker rm $PACKAGE_CONTAINER_NAME
    - docker build -t $CI_REGISTRY_IMAGE_BACKEND -f backend.Dockerfile --build-arg PORT=$BACKEND_PORT .
    - docker push $CI_REGISTRY_IMAGE_BACKEND
  artifacts:
    paths:
      - ColorRecipesExplorer-$CI_PIPELINE_IID.jar
    expire_in: 1 week

.before_deploy: &before_deploy
  before_script:
    - apk update
    - apk add --no-cache openssh-client
    - mkdir -p ~/.ssh
    - echo "$SSH_PRIVATE_KEY" | tr -d '\r' > ~/.ssh/id_rsa
    - chmod 700 ~/.ssh/id_rsa
    - eval $(ssh-agent -s)
    - ssh_add ~/.ssh/id_rsa
    - ssh-keyscan -p $DEPLOYMENT_SERVER_SSH_PORT -H $DEPLOYMENT_SERVER >> ~/.ssh/known_hosts
    - '[[ -f /.dockerenv ]] && echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config'

deploy-backend:
  stage: deploy
  image: alpine:latest
  needs: ['package-backend']
  variables:
    DEPLOYED_CONTAINER_NAME: "cre_backend"
  <<: *before_deploy
  script:
    - ssh -p $DEPLOYMENT_SERVER_SSH_PORT $DEPLOYMENT_SERVER_USERNAME@$DEPLOYMENT_SERVER "docker stop $DEPLOYED_CONTAINER_NAME || true && docker rm $DEPLOYED_CONTAINER_NAME || true"
    - ssh -p $DEPLOYMENT_SERVER_SSH_PORT $DEPLOYMENT_SERVER_USERNAME@$DEPLOYMENT_SERVER "docker login -u $CI_USERNAME -p $CI_ACCESS_TOKEN $CI_REGISTRY && docker pull $CI_REGISTRY_IMAGE_BACKEND"
    - ssh -p $DEPLOYMENT_SERVER_SSH_PORT $DEPLOYMENT_SERVER_USERNAME@$DEPLOYMENT_SERVER "docker run -d -p $BACKEND_PORT:$BACKEND_PORT --name=$DEPLOYED_CONTAINER_NAME -e spring_profiles_active=$BACKEND_PROFILES -e spring_datasource_username=$DB_USERNAME -e spring_datasource_password=$DB_PASSWORD -e spring_datasource_url=$DB_URL $CI_REGISTRY_IMAGE_BACKEND"