version: 2.1
jobs:
  build:
    docker:
      - image: circleci/python:3.7.4
    steps:
      - checkout
      - run:
          name: install pyth dependencies
          command: |
            python3 -m venv venv
            . venv/bin/activate
            pip install -r requirements/dev.txt
          environment:
            CONDUIT_SECRET: 'something-really-secret'
            FLASK_APP: autoapp.py
            FLASK_DEBUG: 1
      - save_cache:
          paths:
            - ./venv
          key: v3-dependencies-{{ checksum "requirements/dev.txt" }}-{{ checksum "requirements/prod.txt" }}
      - store_artifacts:
          path: test-reports/
          destination: tr1
      - store_test_results:
          path: test-reports/
  start_test:
    docker:
      - image: circleci/python:3.7.4
        environment:
          DATABASE_URL: postgresql://myuser:somePwd@localhost:5432/mydb
      - image: circleci/postgres:9.6.5
        environment:
          POSTGRES_DB: mydb
          POSTGRES_USER: myuser
          POSTGRES_PASSWORD: somePwd
    steps:
      - checkout
      - restore_cache:
          keys:
            - v3-dependencies-{{ checksum "requirements/dev.txt" }}-{{ checksum "requirements/prod.txt" }}
            - v3-dependencies-
      - run:
          name: Run unit tests
          command: |
            python3 -m venv venv
            . venv/bin/activate
            python3 autoapp.py
  back-deploy-heroku:
    docker:
      - image: buildpack-deps:trusty
    steps:
      - checkout
      - run:
          name: Heroku Deploy
          command: |
            git push https://heroku:$HEROKU_API_KEY@git.heroku.com/$HEROKU_APP_NAME.git HEAD:main
      - run:
          name: Smoke test
          command: ./testbackend.sh
  buildandpush_dockerhub:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - checkout
      - setup_remote_docker
      - run:
          name: Build application Docker image
          command: |
            docker build --cache-from=app -t app .
      - deploy:
          name: Publish application to docker hub
          command: |
            docker login -e $DOCKER_HUB_EMAIL -u $DOCKER_HUB_USER -p $DOCKER_HUB_PWD
            docker tag app $DOCKER_HUB_USER/$DOCKER_HUB_APP:$CIRCLE_BUILD_NUM
            docker tag app $DOCKER_HUB_USER/$DOCKER_HUB_APP:latest
            docker push $DOCKER_HUB_USER/$DOCKER_HUB_APP:$CIRCLE_BUILD_NUM
            docker push $DOCKER_HUB_USER/$DOCKER_HUB_APP:latest
      - store_artifacts:
          path: test-reports/
          destination: tr1
      - store_test_results:
          path: test-reports/
workflows:
  version: 2.1
  build_circleci:
    jobs:
      - build
      - start_test:
          requires:
            - build
      - back-deploy-heroku:
          requires:
            - start_test
      - buildandpush_dockerhub:
          requires:
            - back-deploy-heroku