image: "ubuntu:bionic"

variables:
  DOCKER_DRIVER: overlay2

cache:
  # Cache by branch/tag and job name
  # Gitlab can't use caches from parent pipelines when doing the first build in a PR, so we use artifacts to copy
  # caches into PRs
  key: ${CI_COMMIT_REF_SLUG}-${CI_JOB_NAME}${CI_EXTERNAL_PULL_REQUEST_IID}
  paths:
    - $CI_PROJECT_DIR/cache

stages:
  - build

.build_template: &build_template
  stage: build
  before_script:
    - export BUILD_TARGET="$CI_JOB_NAME"
    - echo BUILD_TARGET=$BUILD_TARGET
    - source ./ci/matrix.sh

    # The ubuntu base image has apt configured to delete caches after each invocation, which is something that is not desirable for us
    - rm /etc/apt/apt.conf.d/docker-clean
    - apt-get update
    - apt-get install -y wget unzip

    # Init cache
    - export CACHE_DIR=$CI_PROJECT_DIR/cache
    - mkdir -p $CACHE_DIR
    - |
      if [ "$CI_COMMIT_REF_SLUG" != "develop" -a "$CI_COMMIT_TAG" == "" ]; then
        if [ ! -d $CACHE_DIR/ccache ]; then
          echo "Downloading cache from develop branch"
          mkdir cache-artifact
          cd cache-artifact
          if wget --quiet -O cache-artifact.zip https://gitlab.com/$CI_PROJECT_NAMESPACE/$CI_PROJECT_NAME/-/jobs/artifacts/develop/download?job=$CI_JOB_NAME; then
            unzip -q cache-artifact.zip
            rm cache-artifact.zip
            mv cache-artifact/* $CACHE_DIR/ || true
          else
            echo "Failed to download cache"
          fi
          cd ..
          rm -rf cache-artifact
        else
          echo "Not touching cache (was initialized from previous build)"
        fi
      else
        echo "Not touching cache (building develop branch or tag)"
      fi
    # Create missing cache dirs
    - mkdir -p $CACHE_DIR/ccache && mkdir -p $CACHE_DIR/depends && mkdir -p $CACHE_DIR/sdk-sources && mkdir -p $CACHE_DIR/apt
    # Keep this as it makes caching related debugging easier
    - ls -lah $CACHE_DIR && ls -lah $CACHE_DIR/depends && ls -lah $CACHE_DIR/ccache && ls -lah $CACHE_DIR/apt
    - mv $CACHE_DIR/apt/* /var/cache/apt/archives/ || true

    # Install base packages
    - apt-get dist-upgrade -y
    - apt-get install -y git g++ autotools-dev libtool m4 automake autoconf pkg-config zlib1g-dev libssl1.0-dev curl ccache bsdmainutils cmake
    - apt-get install -y python3 python3-dev python3-pip

    # jinja2 is needed for combine_logs.py
    - pip3 install jinja2

    # Setup some environment variables
    - |
      if [ "$CI_EXTERNAL_PULL_REQUEST_IID" != "" ]; then
        export PULL_REQUEST="true"
      else
        # CI_EXTERNAL_PULL_REQUEST_IID is false every time until https://gitlab.com/gitlab-org/gitlab/issues/5667 is done
        # Until then, we're using https://github.com/brndnmtthws/labhub atm to mirror Github pull requests as branches into Gitlab,
        # which allows us to use Gitlab CI for Github. The following check detects such mirrored branches.
        if [[ $CI_COMMIT_REF_NAME =~ ^pr-[^/]*/[^/]*/[^/]*/[^/]*$ ]]; then
          export PULL_REQUEST="true"
          # CI_COMMIT_BEFORE_SHA is also invalid until #5667 is implemented, so we need to figure it out by ourself
          git fetch origin develop
          export CI_COMMIT_BEFORE_SHA="$(git merge-base origin/develop HEAD)"
        else
          export PULL_REQUEST="false"
        fi
      fi
    - export COMMIT_RANGE="$CI_COMMIT_BEFORE_SHA..$CI_COMMIT_SHA"
    - export JOB_NUMBER="$CI_JOB_ID"
    - export HOST_SRC_DIR=$CI_PROJECT_DIR
    - echo PULL_REQUEST=$PULL_REQUEST COMMIT_RANGE=$COMMIT_RANGE HOST_SRC_DIR=$HOST_SRC_DIR CACHE_DIR=$CACHE_DIR
    - echo "Commit log:" && git log --format=fuller -1

    # Build dash_hash
    - git clone https://github.com/dashpay/dash_hash
    - cd dash_hash && python3 setup.py install

    # Install build target specific packages
    - echo PACKAGES=$PACKAGES
    - if [ -n "$DPKG_ADD_ARCH" ]; then dpkg --add-architecture "$DPKG_ADD_ARCH" ; fi
    - if [ -n "$PACKAGES" ]; then apt-get update && apt-get install -y --no-install-recommends --no-upgrade $PACKAGES; fi

    # Move apt packages into cache
    - mv /var/cache/apt/archives/* $CACHE_DIR/apt/ || true

    # Make mingw use correct threading libraries
    - update-alternatives --set i686-w64-mingw32-gcc /usr/bin/i686-w64-mingw32-gcc-posix || true
    - update-alternatives --set i686-w64-mingw32-g++  /usr/bin/i686-w64-mingw32-g++-posix || true
    - update-alternatives --set x86_64-w64-mingw32-gcc  /usr/bin/x86_64-w64-mingw32-gcc-posix || true
    - update-alternatives --set x86_64-w64-mingw32-g++  /usr/bin/x86_64-w64-mingw32-g++-posix || true

  script:
    - export BUILD_TARGET="$CI_JOB_NAME"
    - cd $CI_PROJECT_DIR
    - ./ci/build_depends.sh
    - ./ci/build_src.sh
    - ./ci/test_unittests.sh
    - ./ci/test_integrationtests.sh --extended --exclude pruning,dbcrash

  after_script:
    # Copy all cache files into cache-artifact so that they get uploaded. We only do this for develop so that artifacts
    # stay minimal for PRs and branches (we never need them)
    - mkdir -p $CI_PROJECT_DIR/cache-artifact
    - mkdir -p $CI_PROJECT_DIR/testlogs
    - |
      if [ "$CI_COMMIT_REF_SLUG" = "develop" ]; then
        cp -ra $CI_PROJECT_DIR/cache/* $CI_PROJECT_DIR/cache-artifact/
      fi

  # We're actually only interested in the develop branch creating the cache artifact, but there is no way to control this
  # until https://gitlab.com/gitlab-org/gitlab-foss/issues/25478 gets implemented. Until then, we use an expiration time of
  # 3 days and rely on daily builds to refresh the cache artifacts. We also keep non-develop artifacts at minimum size
  artifacts:
    name: cache-artifact
    when: always
    paths:
      - $CI_PROJECT_DIR/cache-artifact
      - $CI_PROJECT_DIR/testlogs
    expire_in: 3 days

arm-linux:
  <<: *build_template

win32:
  <<: *build_template

win64:
  <<: *build_template

linux32:
  <<: *build_template

linux64:
  <<: *build_template

linux64_nowallet:
  <<: *build_template

linux64_release:
  <<: *build_template

mac:
  <<: *build_template