version: 2 # use CircleCI 2.0
jobs: # A basic unit of work in a run
  build: # runs not using Workflows must have a `build` job as entry point 
    # directory where steps are run
    working_directory: ~/repo
    docker: # run the steps with Docker
      # CircleCI Python images available at: https://hub.docker.com/r/circleci/python/
      - image: circleci/python:3.9.1
        auth:
          username: $DOCKERHUB_USERNAME
          password: $DOCKERHUB_PASSWORD  # context / project UI env-var reference
        environment: # environment variables for primary container
          PIPENV_VENV_IN_PROJECT: true
          DATABASE_URL: postgresql://circle_test:pwd@localhost:5432/circle_test
      # CircleCI PostgreSQL images available at: https://hub.docker.com/r/circleci/postgres/
      - image: circleci/postgres:9.6.9-alpine
        auth:
          username: $DOCKERHUB_USERNAME
          password: $DOCKERHUB_PASSWORD  # context / project UI env-var reference
        environment: # environment variables for the Postgres container.
          POSTGRES_USER: circle_test
          POSTGRES_PASSOWRD: pwd 
          POSTGRES_DB: circle_test
    steps: # steps that comprise the `build` job
      - checkout # check out source code to working directory
      # - run: sudo chown -R circleci:circleci /usr/local/bin
      # - run: sudo chown -R circleci:circleci /usr/local/lib/python3.8/site-packages
      - restore_cache:
      # Read about caching dependencies: https://circleci.com/docs/2.0/caching/
          key: deps9-{{ .Branch }}-{{ checksum "Pipfile.lock" }}
      - run:
          command: |
            python3 -m venv venv
            . venv/bin/activate
            pip install -r requirements/dev.txt
          environment:
            CONDUIT_SECRET: $CONDUIT_SECRET
            FLASK_APP: /home/circleci/repo/autoapp.py
            FLASK_DEBUG: 1
            DATABASE_URL: postgresql://circle_test:pwd@localhost:5432/circle_test
      - save_cache: # cache Python dependencies using checksum of Pipfile as the cache-key
          key: deps9-{{ .Branch }}-{{ checksum "Pipfile.lock" }}

          paths:
            - "venv"
      
      - store_test_results: # Upload test results for display in Test Summary: https://circleci.com/docs/2.0/collect-test-data/
          path: test-results
      - store_artifacts: # Upload test summary for display in Artifacts: https://circleci.com/docs/2.0/artifacts/
          path: test-results
          destination: tr1

  test:
    docker:
      - image: circleci/python:3.9.1
      - image: circleci/postgres:9.6.9-alpine
        environment:
          POSTGRES_USER: circle_test  
          POSTGRES_PASSOWRD: pwd 
          POSTGRES_DB: circle_test
    working_directory: ~/circleci-demo-python-django
    steps:
      - checkout
      - restore_cache:
          key: 
            - deps9-{{ .Branch }}-{{ checksum "Pipfile.lock" }} 
            - deps9-{{ .Branch }}-   
      - run:
          command: |
            . venv/bin/activate
            sleep 1
            flask db upgrade
          environment:
            CONDUIT_SECRET: $CONDUIT_SECRET
            FLASK_APP: /home/circleci/repo/autoapp.py
            FLASK_DEBUG: 1
            DATABASE_URL: postgresql://circle_test:pwd@localhost:5432/circle_test

      - save_cache: # cache Python dependencies using checksum of Pipfile as the cache-key
          key: deps9-{{ .Branch }}-{{ checksum "Pipfile.lock" }}
          paths:
            - "venv"
  heroku:
      docker:
        - image: buildpack-deps:trusty
      working_directory: ~/circleci-demo-python-django
      steps:
        - checkout

        - run:
            name: Heroku Deploy
            command: git push https://heroku:$HEROKU_API_KEY@git.heroku.com/$HEROKU_APP_NAME.git main

  docker_build_push:
    working_directory: /dockerapp
    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 $DOCKERHUB_USERNAME -p $DOCKERHUB_PASSWORD
            docker tag app $DOCKERHUB_USERNAME/dev_ops_back_container:$CIRCLE_BUILD_NUM
            docker tag app $DOCKERHUB_USERNAME/dev_ops_back_container:latest
            docker push $DOCKERHUB_USERNAME/dev_ops_back_container:$CIRCLE_BUILD_NUM
            docker push $DOCKERHUB_USERNAME/dev_ops_back_container:latest  
          
workflows: 
  version: 2
  build-test:
    jobs:
      - build
      - test:
          requires:
            - build
      - heroku:
          requires:
            - build
            - test
      - docker_build_push:
          requires:
            - build
            - test