version: 2
jobs:
  build:
    working_directory: ~/work
    docker:
      - image: "ltgdocker/circleci-openjdk:11"
        environment:
          DOCKER_IMAGE: billing
          JAVA_TOOL_OPTIONS: -Xmx750m
      - image: mysql:5.7
        environment:
         - MYSQL_ROOT_PASSWORD=root
         - MYSQL_DATABASE=billing_local
         - MYSQL_USER=billing_ci
         - MYSQL_PASSWORD=billing_ci

    steps:
      - checkout
      - setup_remote_docker

      - restore_cache:
          keys:
            - billing4-{{ checksum "build.gradle" }}

      # Java build
      - run: ./gradlew build

      - save_cache:
          paths:
            - ~/.gradle
          key: billing4-{{ checksum "build.gradle" }}
          when: always

      - run:
          name: Save test results
          command: |
            mkdir -p ~/junit/
            find . -type f -regex ".*/build/test-results/.*xml" -exec cp {} ~/junit/ \;
          when: always

      - store_test_results:
          path: ~/junit

      - store_artifacts:
          path: ~/junit

      # Image build
      - run:
          name: ECR login
          command: |
              eval $(aws ecr get-login  --no-include-email --region=$(echo $DOCKER_REGISTRY | cut -d. -f4) )
      - deploy:
          name: Build and push latest
          command: |
            if [ "${CIRCLE_BRANCH}" == "master" ] || [[ "${CIRCLE_BRANCH}" =~ ^hotfix ]]; then
              export DOCKER_TAG=$(date +%Y-%m-%d).$CIRCLE_BUILD_NUM
              docker build -t $DOCKER_REGISTRY/$DOCKER_IMAGE:latest .
              docker push $DOCKER_REGISTRY/$DOCKER_IMAGE:latest
              docker tag $DOCKER_REGISTRY/$DOCKER_IMAGE:latest $DOCKER_REGISTRY/$DOCKER_IMAGE:$DOCKER_TAG
              docker push $DOCKER_REGISTRY/$DOCKER_IMAGE:$DOCKER_TAG
              echo "$DOCKER_REGISTRY/$DOCKER_IMAGE:$DOCKER_TAG" > /tmp/docker-containers.txt
            fi
      - deploy:
          name: Deployment
          command: |
            if [ "${CIRCLE_BRANCH}" == "master" ]; then
              export DOCKER_TAG=$(date +%Y-%m-%d).$CIRCLE_BUILD_NUM
              kubectl config set-cluster k8s --server=$K8S_SERVER --insecure-skip-tls-verify=true &&
              kubectl config set-credentials k8s --username=$K8S_USER --password=$K8S_PASSWORD &&
              kubectl config set-context k8s --cluster=k8s --user=k8s &&
              kubectl config use-context k8s
              kubectl scale --replicas=1 deployments/billing --namespace=test
              kubectl set image deployments/billing --namespace=test billing=$DOCKER_REGISTRY/$DOCKER_IMAGE:$DOCKER_TAG
              kubectl rollout status deployments/billing --namespace=test
              kubectl scale --replicas=2 deployments/billing --namespace=test
            fi
      - store_artifacts:
          path: ./builds
          destination: builds/

      - store_artifacts:
          path: /tmp/docker-containers.txt
          destination: docker-containers.txt