language: c # or other C/C++ variants

sudo: false

# https://docs.travis-ci.com/user/caching/
#
# Caching the whole nim folder is better than relying on ccache - this way, we
# skip the expensive bootstrap process and linking
cache:
  directories:
    - nim
    - rocksdb

matrix:
  include:
    - os: linux
      sudo: required
      before_install:
        - export INSTALL_PATH=/usr
        - export NPROC=$(nproc)
    - os: osx
      before_install:
        - export INSTALL_PATH=$HOME # included in DYLD_FALLBACK_LIBRARY_PATH
        - export NPROC=$(sysctl -n hw.ncpu)

install:
  # build nim from our own branch - this to avoid the day-to-day churn and
  # regressions of the fast-paced Nim development while maintaining the
  # flexibility to apply patches
  #
  # check version of remote branch
  - "export NIMVER=$(git ls-remote https://github.com/status-im/nim.git HEAD | cut -f 1)"

  # after building nim, wipe csources to save on cache space
  - "{ [ -f nim/$NIMVER/bin/nim ] && [ -f nim/$NIMVER/bin/nimble ] ; } ||
      { rm -rf nim ;
        mkdir -p nim ;
        git clone --depth=1 https://github.com/status-im/nim.git nim/$NIMVER ;
        cd nim/$NIMVER ;
        sh build_all.sh ;
        rm -rf csources ;
        cd ../.. ;
      }"
  - "export PATH=$PWD/nim/$NIMVER/bin:$PATH"

  # build our own rocksdb to test with a fixed version that we think works
  - "export ROCKSDBVER=5.14.2"
  - "[ -f rocksdb/rocksdb-$ROCKSDBVER/Makefile ] || { rm -rf rocksdb ; mkdir -p rocksdb; cd rocksdb; wget https://github.com/facebook/rocksdb/archive/v$ROCKSDBVER.tar.gz && tar xvf v$ROCKSDBVER.tar.gz; cd ..; }"
  - cd rocksdb/rocksdb-$ROCKSDBVER
  - "[ -f util/build_version.cc ] || { make util/build_version.cc ; }" # use cached version if possible
  - export NO_UPDATE_BUILD_VERSION=1
  - make shared_lib -j$NPROC && sudo make install-shared
  - cd ../..

  # no need to cache, lmdb is small and compile very fast
  - "export LMDBVER=0.9.22"
  - "wget https://github.com/LMDB/lmdb/archive/LMDB_$LMDBVER.tar.gz && tar xvf LMDB_$LMDBVER.tar.gz;"
  - cd lmdb-LMDB_$LMDBVER/libraries/liblmdb && make
  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sed -i 's| liblmdb.a||' Makefile && sudo make prefix=/usr install; fi
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then sudo cp liblmdb.so /usr/local/lib/liblmdb.dylib; fi
  - cd ../../..

script:
  - nimble install -y
  - nimble test