version: 2.1

executors:
  docker-publisher:
    environment:
      IMAGE_NAME: flmcode/dangerzone
    docker:
      - image: circleci/python

jobs:

  build:
    executor: docker-publisher
    steps:
      - checkout
      - setup_remote_docker
      - run:
          name: Build docker image
          command: docker build -t $IMAGE_NAME:latest .
      - run:
          name: Archive docker image
          command: docker save -o image.tar $IMAGE_NAME
      - persist_to_workspace:
          root: .
          paths:
            - ./image.tar

  publish-latest:
    executor: docker-publisher
    steps:
      - attach_workspace:
          at: /tmp/workspace
      - setup_remote_docker
      - run:
          name: Load archived docker image
          command: docker load -i /tmp/workspace/image.tar
      - run:
          name: Publish image to docker Hub
          command: |
            echo $DOCKERHUB_PASSWORD | docker login -u $DOCKERHUB_USERNAME --password-stdin
            docker push $IMAGE_NAME:latest

  publish-tag:
    executor: docker-publisher
    steps:
      - attach_workspace:
          at: /tmp/workspace
      - setup_remote_docker
      - run:
          name: Load archived docker image
          command: docker load -i /tmp/workspace/image.tar
      - run:
          name: Publish image to docker Hub
          command: |
            echo $DOCKERHUB_PASSWORD | docker login -u $DOCKERHUB_USERNAME --password-stdin
            IMAGE_TAG=${CIRCLE_TAG/v/''}
            docker tag $IMAGE_NAME:latest $IMAGE_NAME:$IMAGE_TAG
            docker push $IMAGE_NAME:latest
            docker push $IMAGE_NAME:$IMAGE_TAG

workflows:
  version: 2
  build-stable:
    jobs:
      - build:
          filters:
            branches:
              only: stable
      - publish-latest:
          requires:
            - build
          filters:
            branches:
              only: stable
  build-tags:
    jobs:
      - build:
          filters:
            tags:
              only: /^v.*/
            branches:
              ignore: /.*/
      - publish-tag:
          requires:
            - build
          filters:
            tags:
              only: /^v.*/
            branches:
              ignore: /.*/
  monthly:
    triggers:
      - schedule:
          cron: "0 0 1 * *"
          filters:
            branches:
              only: stable
    jobs:
      - build:
          filters:
            branches:
              only: stable
      - publish-latest:
          requires:
            - build
          filters:
            branches:
              only: stable