Add GitLab CI configuration

stages:

- test

- build

- publish

image: python:3.9

variables:

  PIP_CACHE_DIR: $CI_PROJECT_DIR/cache/pkg

  PRE_COMMIT_HOME: $CI_PROJECT_DIR/cache/pre-commit

.cached-pkgs:

  cache:

    key: $CI_JOB_IMAGE

    paths: [cache/pkg]

Code Checks:

  stage: test

  image: docker.kodo.org.uk/ci-images/pre-commit:2.15.0-1

  cache:

    key: $CI_JOB_NAME

    paths: [cache]

  variables:

    HOOK_STAGE: commit

    FROM_REF: $CI_DEFAULT_BRANCH

  rules:

  - if: $CI_PIPELINE_SOURCE == "push" && $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH

    variables:

      FROM_REF: $CI_COMMIT_BEFORE_SHA

  - if: $CI_PIPELINE_SOURCE == "push"

  - if: $CI_PIPELINE_SOURCE == "merge_request_event"

    variables:

      HOOK_STAGE: merge-commit

  script:

  - git fetch $CI_REPOSITORY_URL $FROM_REF:FROM_REF -f

  - pre-commit run

    --hook-stage=$HOOK_STAGE

    --from-ref=FROM_REF

    --to-ref=HEAD

Commit Graph Check:

  extends: ["Code Checks"]

  variables:

    HOOK_STAGE: push

  rules:

  - if: $CI_PIPELINE_SOURCE == "push" && $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH

    variables:

      FROM_REF: $CI_COMMIT_BEFORE_SHA

  - if: $CI_PIPELINE_SOURCE == "merge_request_event"

Check Tag:

  stage: test

  extends: [.cached-pkgs]

  rules:

  - if: $CI_COMMIT_TAG =~ /^v[0-9]/

  script:

  - pip install tomli packaging

  - |

    python <<-END

    import tomli

    from packaging.version import Version

    with open("pyproject.toml", "rb") as f:

      proj = tomli.load(f)

    assert Version("$CI_COMMIT_TAG") == Version(proj["tool"]["poetry"]["version"])

    END

Build Package:

  stage: build

  extends: [.cached-pkgs]

  script:

  - pip install build

  - python -m build

  artifacts:

    paths: [dist]

Upload Package:

  stage: publish

  extends: [.cached-pkgs]

  rules:

  - if: $CI_COMMIT_TAG =~ /^v[0-9]/

  script:

  - pip install twine

  - TWINE_USERNAME=gitlab-ci-token

    TWINE_PASSWORD=$CI_JOB_TOKEN

    twine upload

    --verbose

    --non-interactive

    --repository-url $CI_API_V4_URL/projects/$CI_PROJECT_ID/packages/pypi

    dist/*