.gitlab-ci.yml

stages:
  - build
  # TODO: add test stage to prevent cache throwouts if test failed?
  - publish

.tests:
  image: leonschoorl/clash-ci-image:trusty
  stage: build
  variables:
    GIT_SUBMODULE_STRATEGY: recursive
    TERM: xterm-color
  retry:
    max: 2
    when:
      - runner_system_failure
      - stuck_or_timeout_failure
  cache:
    key: cabal-store-$CI_JOB_NAME
    paths:
      - cabal-store/
  script:
    - unset SNAPCRAFT_LOGIN_FILE
    - export GHC="$CI_JOB_NAME"
    - export THREADS=$(nproc)
    - export CABAL_JOBS=$(nproc)
    - export
    - .ci/setup.sh
    - .ci/build.sh
    - .ci/test.sh

ghc-8.2.2:
  extends: .tests
ghc-8.4.4:
  extends: .tests
ghc-8.6.5:
  extends: .tests
ghc-8.8.1:
  extends: .tests
  allow_failure: true
ghc-head:
  # extends: .tests
  stage: build
  allow_failure: true
  script:
    # Awaiting issue: https://github.com/goldfirere/singletons/issues/357
    - echo "GHC head currently disabled, because singletons doesn't build on ghc head"
    - exit 1

# Create a binary distribution using nix, and store it in a tarball. A special
# nix distribution is used that has its store installed on /usr/nix/store,
# instead of the default /nix. This is used to work around a know limitation
# of snap layouts. As of August 2019 the snapcraft docs mention:
#
#  > Layouts cannot currently create new top-level files or directories.
#  > 
#  >  - https://snapcraft.io/docs/snap-layouts
# 
# If this limitation is ever annulled, we can use a "proper" nix distribution.
snap-bindist:
  image: clashlang/nixbuntu:2.2.2
  stage: build
  cache:
    key: usr-nix-$CI_JOB_NAME
    paths:
      # GitLab CI uses zip as a cache archive. For some reason, nix can't
      # handle this (wrong permissions, missing symlinks?), so we pre-tar it.
      - usr_nix.tar.xz
  artifacts:
    when: always
    paths:
      - nix_build.log
      - bindist/linux/snap/clash-snap-bindist.tar.xz
    expire_in: 1 week
  script:
    # TODO: Clean up nix-store after building
    - export XZ_DEFAULTS="-T 0 -3"
    - export ROOT=$(pwd)
    - tar xf usr_nix.tar.xz -C / || true
    - apt update
    - apt install ksh -y  # TODO: Remove need for ksh in mkBinDist.sh
    - cd bindist/linux/snap && ./mkBinDist.sh &> $ROOT/nix_build.log
    - tar cJf $ROOT/usr_nix.tar.xz /usr/nix

  # Run every night or when explicitly triggered
  only:
    - schedules
    - triggers

# Use binary distribution built in `snap-bindist` to build a snap pacakge.
snap:
  image: snapcore/snapcraft
  stage: publish
  cache:
    key: snap-last-run-hash
    paths:
      - snap-last-run-hash
  artifacts:
    when: always
    paths:
      - bindist/linux/snap/*.snap
    expire_in: 1 week
  variables:
    # TODO: detect tags/branches and push to stable
    RELEASE_CHANNEL: edge
  script:
    - apt update
    - apt install git -y
    - touch snap-last-run-hash
    - |
      if [ "$(cat snap-last-run-hash)" == $(git rev-parse HEAD) ]; then
        echo "Already built and published $(git rev-parse HEAD). Nothing to do!";
        exit 0;
      fi
    - git rev-parse HEAD > snap-last-run-hash
    - cd bindist/linux/snap 
    - echo $SNAPCRAFT_LOGIN_FILE | base64 --decode --ignore-garbage > snapcraft.login
    - snapcraft login --with snapcraft.login
    - snapcraft
    - snapcraft push *.snap --release ${RELEASE_CHANNEL}
  only:
    - schedules
    - triggers