stages:
  - build
  - test
  - visualization
  - package
  - deploy

build:
  rules:
    -  if : '$CI_MERGE_REQUEST_TARGET_BRANCH_NAME == "main" || $CI_MERGE_REQUEST_TARGET_BRANCH_NAME == "develop"'
    image: openjdk:17-alpine
    stage: build
    before_script:
      - echo "$APPLICATION_YAML" > "src/main/resources/application.yml"
    script:
      - ./gradlew clean
      - ./gradlew build -x test
    artifacts:
      paths:
        - build/libs/*.jar
      expire_in: 10 min

test:
  rules:
    - if: '$CI_MERGE_REQUEST_TARGET_BRANCH_NAME == "main" || $CI_MERGE_REQUEST_TARGET_BRANCH_NAME == "develop"'
    variables:
      GRADLE_OPTS: "-Dorg.gradle.daemon=false"
      # Instruct Testcontainers to use the daemon of DinD.
      DOCKER_HOST: "tcp://docker:2375"
      # Improve performance with overlayfs.
      DOCKER_DRIVER: overlay2
      DOCKER_TLS_CERTDIR: ""

    image: openjdk:17-alpine
    stage: test
    tags:
      - gitlab-runner
    services:
      - name: docker:dind
    script:
      - ./gradlew test
    coverage: '/ - Instruction Coverage: ([0-9.]+)%/'
    artifacts:
      paths:
        - build/reports/jacoco/test/jacoco*.xml
      reports:
        junit: build/test-results/test/**/TEST-*.xml

#https://docs.gitlab.com/ee/ci/testing/test_coverage_visualization.html
visualization:
  rules:
    - if: '$CI_MERGE_REQUEST_TARGET_BRANCH_NAME == "main" || $CI_MERGE_REQUEST_TARGET_BRANCH_NAME == "develop"'
    stage: visualization
    image: registry.gitlab.com/haynes/jacoco2cobertura:1.0.7
    script:
      - python /opt/cover2cover.py build/reports/jacoco/test/jacoco*.xml $CI_PROJECT_DIR/src/main/java/ > build/cobertura.xml
    needs: ["test"]
    artifacts:
      reports:
        coverage_report:
          coverage_format: cobertura
          path: build/cobertura.xml

package-and-push:
  rules:
    - if: '$CI_MERGE_REQUEST_TARGET_BRANCH_NAME == "main"'
  stage: package
  needs: ["test"]
  image: docker:latest
  services:
    - name: docker:dind
  before_script:
    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
  script:
    - docker pull $IMAGE_NAME:latest || true
    - docker build --cache-from $IMAGE_NAME:latest --tag $IMAGE_NAME:$CI_COMMIT_SHA --tag $IMAGE_NAME:latest .
    - docker push $IMAGE_NAME:$CI_COMMIT_SHA
    - docker push $IMAGE_NAME:latest
  after_script:
    - docker logout

deploy:
  rules:
    - if: '$CI_MERGE_REQUEST_TARGET_BRANCH_NAME == "main"'
  stage: deploy
  needs: ["test"]
  tags:
    - deployer
  before_script:
    ## Run ssh-agent (inside the build environment)
    - eval $(ssh-agent -s)

    ## ADD ssh-key to ssh-agent
    - chmod 400 "$SSH_KEY"
    - ssh-add "$SSH_KEY"

    ## ADD ssh known hosts
    - mkdir -p ~/.ssh touch /.ssh/known_hosts
    - cp "$SSH_KNOWN_HOSTS" ~/.ssh/known_hosts

    ## change permission
    - chmod 644 ~/.ssh/known_hosts
    - chmod 700 ~/.ssh
  script:
    ## SSH CONNECTION
    - ssh root@IP_ADDRESS
    - cd deploy
    ## PULL IMAGE
    - docker pull $IMAGE_NAME:latest
    - echo "$DEPLOY_ENV" >> .env
    ## BLUE_DEPLOY
    - echo "$BLUE_DEPLOY_YAML" >> blue_deploy.yml
    - docker-compose -f blue-deploy.yml down -v
    - docker-compose -f blue-deploy.yml --env-file .env up -d
    ## GREEN_DEPLOY TODO
    # - echo "$GREEN_DEPLOY_YAML" >> green_deploy.yml
    # - docker-compose -f green_deploy.yml down -v
    # - docker-compose -f green_deploy.yml --env-file .env up -d
  after_script:
    - exit