image: python:3.10-alpine

stages:
  - build
  - review
  - deploy

variables:
  PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
cache:
  paths:
    - .cache/pip

build:
  stage: build
  before_script:
    - python -m venv .venv
    - source .venv/bin/activate
    - pip install -r requirements.txt
  script:
    - mkdocs build
  rules:
    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
    - if: $CI_COMMIT_REF_NAME == 'main'
  artifacts:
    paths:
      - site

pages:review:
  stage: review
  before_script:
    - apk add findutils
  script:
    - find site/ -type f -regextype egrep -iregex ".*\.(html)" -exec sed -i -r -e 's@<a href="../(.*)/"@<a href="../\1/index.html"@' -e 's@<a href="./"@<a href="./index.html"@' -e 's@<a href="../.."@<a href="../../index.html"@' -e 's/(href="[^http].*\/)"/\1index.html"/' "{}" +;
    - mv site public
  needs:
    - job: build
      artifacts: true
  dependencies:
    - build
  artifacts:
    paths:
    - public
  rules:
    - if: $CI_MERGE_REQUEST_ID
  environment:
      name: review/$CI_COMMIT_REF_NAME
      url: "https://$CI_PROJECT_ROOT_NAMESPACE.$CI_PAGES_DOMAIN/-/$CI_PROJECT_NAME/-/jobs/$CI_JOB_ID/artifacts/public/"
      auto_stop_in: 1 week
      on_stop: pages:review:stop

pages:review:stop:
  stage: review
  environment:
      name: review/$CI_COMMIT_REF_NAME
      action: stop
  script: echo "stop pages review"
  rules:
    - if: $CI_MERGE_REQUEST_ID
  when:
    manual
  needs:
    - job: pages:review
  allow_failure: true

pages:
  stage: deploy
  script:
    - mv site public
    - find public -type f -regex '.*.(htm|html|txt|text|js|css)$' -exec gzip -f -k {} +
    - find public -type f -regex '.*.(htm|html|txt|text|js|css)$' -exec brotli -f -k {} +
  needs:
    - job: build
      artifacts: true
    - job: pages:review:stop
      optional: true
  dependencies:
    - build
  rules:
    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
    - if: $CI_MERGE_REQUEST_APPROVED && $CI_MERGE_REQUEST_TARGET_BRANCH_NAME == "main"
    - if: $CI_COMMIT_REF_NAME == 'main'
  artifacts:
    paths:
      - public