.travis.yml

dist: xenial
language: python
python: 3.7
install:
  - pip install -r requirements.txt
  - pip install pylint flake8 pytype pytest invoke twine

stages:
  - lint
  - test
  - build docs

  - name: build
    if: (branch != master && tag IS blank) || type != push

  - name: deploy
    if: (branch = master || tag IS present) && type = push

jobs:
  include:
    - stage: lint
      script:
        - invoke lint

    - stage: test
      script:
        - invoke test

    - stage: build docs
      script:
        - invoke build-docs

    - stage: build
      script:
        - invoke build

    - stage: deploy
      script:
        - |
          if [ ! -z "$TRAVIS_TAG" ]; then
            export IMAGE_TAG=$TRAVIS_TAG
          else
            export IMAGE_TAG='latest'
          fi
        - invoke build --docker-tag=$IMAGE_TAG
        - echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
        - invoke publish --docker-tag=$IMAGE_TAG --production-pypi