version: 2

jobs:
  # the first half of the jobs are in this test
  short-tests-0:
    # TODO: Create a small custom docker image with all the dependencies we need
    #       preinstalled to reduce installation time.
    docker:
      - image: fbopensource/zstd-circleci-primary:0.0.1
    steps:
      - checkout
      - run:
          name: Test
          command: |
            cc -v; CFLAGS="-O0 -Werror" make all && make clean
            make c99build         ; make clean
            make c11build         ; make clean
            make aarch64build     ; make clean
            make -j regressiontest; make clean
            make shortest         ; make clean
            make cxxtest          ; make clean
  # the second half of the jobs are in this test
  short-tests-1:
    docker:
      - image: fbopensource/zstd-circleci-primary:0.0.1
    steps:
      - checkout
      - run:
          name: Test
          command: |
            make gnu90build; make clean
            make gnu99build; make clean
            make ppc64build; make clean
            make ppcbuild  ; make clean
            make armbuild  ; make clean
            make -C tests test-legacy test-longmatch test-symbols; make clean
            make -C lib libzstd-nomt; make clean
  # This step is only run on release tags.
  # It publishes the source tarball as artifacts and if the GITHUB_TOKEN
  # environment variable is set it will publish the source tarball to the
  # tagged release.
  publish-github-release:
    docker:
      - image: fbopensource/zstd-circleci-primary:0.0.1
    environment:
      CIRCLE_ARTIFACTS: /tmp/circleci-artifacts
    steps:
      - checkout
      - run:
          name: Publish
          command: |
            export VERSION=$(echo $CIRCLE_TAG | tail -c +2)
            export ZSTD_VERSION=zstd-$VERSION
            git archive $CIRCLE_TAG --prefix $ZSTD_VERSION/ --format tar \
                        -o $ZSTD_VERSION.tar
            sha256sum $ZSTD_VERSION.tar > $ZSTD_VERSION.tar.sha256
            zstd -19 $ZSTD_VERSION.tar
            sha256sum $ZSTD_VERSION.tar.zst > $ZSTD_VERSION.tar.zst.sha256
            gzip -k -9 $ZSTD_VERSION.tar
            sha256sum $ZSTD_VERSION.tar.gz > $ZSTD_VERSION.tar.gz.sha256
            mkdir -p $CIRCLE_ARTIFACTS
            cp $ZSTD_VERSION.tar* $CIRCLE_ARTIFACTS
      - store_artifacts:
          path: /tmp/circleci-artifacts
  # This step should only be run in a cron job
  regression-test:
    docker:
      - image: fbopensource/zstd-circleci-primary:0.0.1
    environment:
      CIRCLE_ARTIFACTS: /tmp/circleci-artifacts
    steps:
      - checkout
      # Restore the cached resources.
      - restore_cache:
          # We try our best to bust the cache when the data changes by hashing
          # data.c. If that doesn't work, simply update the version number here
          # and below. If we fail to bust the cache, the regression testing will
          # still work, since it has its own stamp, but will need to redownload
          # everything.
          keys:
            - regression-cache-{{ checksum "tests/regression/data.c" }}-v0
      - run:
          name: Regression Test
          command: |
            make -C programs zstd
            make -C tests/regression test
            mkdir -p $CIRCLE_ARTIFACTS
            ./tests/regression/test                     \
                --cache  tests/regression/cache         \
                --output $CIRCLE_ARTIFACTS/results.csv  \
                --zstd   programs/zstd
            echo "NOTE: The new results.csv is uploaded as an artifact to this job"
            echo "      If this fails, go to the Artifacts pane in CircleCI, "
            echo "      download /tmp/circleci-artifacts/results.csv, and if they "
            echo "      are still good, copy it into the repo and commit it."
            echo "> diff tests/regression/results.csv $CIRCLE_ARTIFACTS/results.csv"
            diff tests/regression/results.csv $CIRCLE_ARTIFACTS/results.csv
      # Only save the cache on success (default), since if the failure happened
      # before we stamp the data cache, we will have a bad cache for this key.
      - save_cache:
          key: regression-cache-{{ checksum "tests/regression/data.c" }}-v0
          paths:
            - tests/regression/cache
      - store_artifacts:
          path: /tmp/circleci-artifacts


workflows:
  version: 2
  commit:
    jobs:
      # Run the tests in parallel
      - short-tests-0:
          filters:
            tags:
              only: /.*/
      - short-tests-1:
          filters:
            tags:
              only: /.*/
      # Create a branch called regression and set it to dev to force a
      # regression test run
      - regression-test:
          filters:
            branches:
              only:
                - regression
      # Only run on release tags.
      - publish-github-release:
          requires:
            - short-tests-0
            - short-tests-1
          filters:
            branches:
              ignore: /.*/
            tags:
              only: /^v\d+\.\d+\.\d+$/
  nightly:
    triggers:
      - schedule:
          cron: "0 0 * * *"
          filters:
            branches:
              only:
                - master
                - dev
    jobs:
      # Run daily long regression tests
      - regression-test


  # Longer tests
    #- make -C tests test-zstd-nolegacy && make clean
    #- pyenv global 3.4.4; make -C tests versionsTest && make clean
    #- make zlibwrapper         && make clean
    #- gcc -v; make -C tests test32 MOREFLAGS="-I/usr/include/x86_64-linux-gnu" && make clean
    #- make uasan               && make clean
    #- make asan32              && make clean
    #- make -C tests test32 CC=clang MOREFLAGS="-g -fsanitize=address -I/usr/include/x86_64-linux-gnu"
  # Valgrind tests
    #- CFLAGS="-O1 -g" make -C zlibWrapper valgrindTest && make clean
    #- make -C tests valgrindTest && make clean
  # ARM, AArch64, PowerPC, PowerPC64 tests
    #- make ppctest             && make clean
    #- make ppc64test           && make clean
    #- make armtest             && make clean
    #- make aarch64test         && make clean