version: 2
jobs:
  build:
    docker:
      - image: circleci/python:3.9-buster-node-browsers
    working_directory: ~/repo
    steps:
      - checkout
      - restore_cache:
          key: dependencies-{{ checksum "requirements/dev.txt"}}-{{ checksum "requirements/prod.txt" }}
      - run:
          name: Install dependencies 
          command: |
            python3 -m venv venv
            . venv/bin/activate
            pip install -r requirements/dev.txt
          environment:
            CONDUIT_SECRET: 'something-really-secret'
            FLASK_APP: /home/circleci/repo/autoapp.py
            FLASK_DEBUG: 1
      - save_cache:
          paths: 
            - venv
          key: dependencies-{{ checksum "requirements/dev.txt"}}-{{ checksum "requirements/prod.txt" }}
          
  test:
    docker: 
      - image: circleci/python:3.9-buster-node-browsers
      - image: circleci/postgres:9.6.2-alpine
        environment:
          POSTGRES_USER: postgres
          POSTGRES_DB: postgres
          POSTGRES_PASSWORD: root
    working_directory: ~/repo
    steps:
      - checkout
      - restore_cache:
          keys: 
            -dependencies-{{ checksum "requirements/dev.txt"}}-{{ checksum "requirements/prod.txt" }}
            -dependencies
      - run:
          name: db upgrade 
          command: |
            . venv/bin/activate
            sleep 1
            flask db upgrade
          environment:
            CONDUIT_SECRET: 'something-really-secret'
            FLASK_APP: /home/circleci/repo/autoapp.py
            DATABASE_URL: postgresql://postgres:root@localhost:5432/postgres
            FLASK_DEBUG: 1
            POSTGRES_USER: postgres
            POSTGRES_DB: postgres
            POSTGRES_PASSWORD: root
            POSTGRES_PORT: 5432
      - run: 
          name: db test
          command: |
            . venv/bin/activate
            flask db migrate
            flask test
          environment:
            CONDUIT_SECRET: 'something-really-secret'
            FLASK_APP: /home/circleci/repo/autoapp.py
            DATABASE_URL: postgresql://postgres:root@localhost:5432/postgres
            FLASK_DEBUG: 1
            POSTGRES_USER: postgres
            POSTGRES_DB: postgres
            POSTGRES_PASSWORD: root
            POSTGRES_PORT: 5432

  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 origin/main
      - run:
          name: Smoke test
          command: |
            if [[ "$HTTPCODE" -ne 200 ]]; then
              echo "heroku app not responding, failing deploy" \
              exit 1 \
              HTTPCODE=`curl -s -o /dev/null -w "%{http_code}" https://$HEROKU_APP_NAME.herokuapp.com/`
            fi
            
  docker-build-and-push:
    working_directory: /dockerapp
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - checkout
      - setup_remote_docker
      - run:
          name:  build app image 
          command: |
            docker build --cache-from=app -t app .
      - run: 
          name: Publish app to docker hub
          command: |
            docker login -e $DOCKER_HUB_EMAIL -u $DOCKER_HUB_USER_ID -p $DOCKER_HUB_PWD
            docker tag app $DOCKER_HUB_USER_ID/devops-final-back:$CIRCLE_BUILD_NUM
            docker tag app $DOCKER_HUB_USER_ID/devops-final-back:1.0
            docker push $DOCKER_HUB_USER_ID/devops-final-back:$CIRCLE_BUILD_NUM
            docker push $DOCKER_HUB_USER_ID/devops-final-back:1.0
            
workflows:
  version: 2
  build-deploy:
    jobs:
      - build
      - test:
          requires:
            - build
      - deploy-heroku:
          requires:
            - build
      - docker-build-and-push:
          requires:
            - build