image: briar/ci-image-android:buster # revert to latest when on buster

stages:
  - test

workflow:
  # when to create a CI pipeline
  rules:
    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
    - if: '$CI_COMMIT_BRANCH && $CI_OPEN_MERGE_REQUESTS'
      when: never # avoids duplicate jobs for branch and MR
    - if: '$CI_COMMIT_BRANCH'
    - if: '$CI_COMMIT_TAG'

test:
  stage: test
  before_script:
    - set -e
    - export GRADLE_USER_HOME=$PWD/.gradle
  script:
    - ./gradlew --no-daemon check lint
  after_script:
    # these file change every time and should not be cached
    - rm -f $GRADLE_USER_HOME/caches/modules-2/modules-2.lock
    - rm -fr $GRADLE_USER_HOME/caches/*/plugin-resolution/
  cache:
    key: "$CI_COMMIT_REF_SLUG"
    paths:
      - .gradle/wrapper
      - .gradle/caches
  rules:
    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
      when: always
    - when: always