stages:
  - test
  - build and push
  - manifests
  - release

.common_build: &common_build
  image: docker:stable
  stage: build and push
  variables:
    DOCKER_DRIVER: overlay2
  services:
    - docker:dind
  except:
    - tags
  only:
    changes:
      - "Dockerfile*"
      - Varken.py
      - varken/*
      - .gitlab-ci.yml
  before_script:
    - mkdir $HOME/.docker
    - echo '{"experimental":"enabled"}' > $HOME/.docker/config.json
    - if [[ $CI_COMMIT_REF_NAME == "master" ]]; then
          export TAG=$(grep -i version varken/__init__.py | cut -d \  -f3 | tr -d \");
      else
          export TAG="develop";
      fi
    - echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USER" --password-stdin
    - export CI_PROJECT_PATH=$(echo $CI_PROJECT_PATH | tr "[:upper:]" "[:lower:]")

.common_release: &common_release
  <<: *common_build
  tags:
    - docker
    - shared
  only:
    refs:
      - master

flake8:
  image: python:3.7.3-alpine
  stage: test
  cache:
    key: "varken-cache"
    paths:
      - .cache/pip
      - venv/
  variables:
    PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
  tags:
    - shared
  before_script:
    - python -m venv venv
    - source venv/bin/activate
    - pip install -U flake8
  script:
    - flake8 --max-line-length 120 Varken.py varken/*.py

amd64:
  <<: *common_build
  tags:
    - docker
    - shared
  script:
    - docker build --pull
                   --cache-from "$CI_PROJECT_PATH":"$TAG-amd64"
                   -t "$CI_PROJECT_PATH":"$TAG-amd64" .
    - docker push "$CI_PROJECT_PATH":"$TAG-amd64"

armv6:
  <<: *common_build
  tags:
    - docker
    - arm
  script:
    - docker build --pull
                   --cache-from "$CI_PROJECT_PATH":"$TAG-arm"
                   -t "$CI_PROJECT_PATH":"$TAG-arm"
                   -f Dockerfile.arm .
    - docker push "$CI_PROJECT_PATH":"$TAG-arm"

arm64v8:
  <<: *common_build
  tags:
    - docker
    - arm64
  script:
    - docker build --pull
                   --cache-from "$CI_PROJECT_PATH":"$TAG-arm64"
                   -t "$CI_PROJECT_PATH":"$TAG-arm64"
                   -f Dockerfile.arm64 .
    - docker push "$CI_PROJECT_PATH":"$TAG-arm64"

versioned:
  <<: *common_build
  stage: manifests
  tags:
    - docker
    - shared
  script:
    - docker manifest create "$CI_PROJECT_PATH":"$TAG"
      "$CI_PROJECT_PATH":"$TAG-amd64"
      "$CI_PROJECT_PATH":"$TAG-arm64"
      "$CI_PROJECT_PATH":"$TAG-arm"
    - docker manifest push -p "$CI_PROJECT_PATH":"$TAG"

latest:
  <<: *common_release
  stage: manifests
  tags:
    - docker
  script:
    - docker manifest create "$CI_PROJECT_PATH":latest
      "$CI_PROJECT_PATH":"$TAG-amd64"
      "$CI_PROJECT_PATH":"$TAG-arm64"
      "$CI_PROJECT_PATH":"$TAG-arm"
    - docker manifest push -p "$CI_PROJECT_PATH":latest

github:
  <<: *common_release
  stage: release
  script:
    - apk add git
    - git remote set-url origin "https://$GITHUB_USER:$GITHUB_TOKEN@github.com/$CI_PROJECT_PATH.git"
    - git tag $TAG
    - git push --tags