#!/bin/bash

set -e

root=$(cd $(dirname ${0})/..; pwd)
third_party=${root}/third_party
tools=${root}/tools

identifier=scikit-learn
virtualenv=${third_party}/virtualenv/${identifier}

bold() {
    echo "$(tty -s && tput bold)$1$(tty -s && tput sgr0)" 
}

git_sync() {
    mkdir -p "${third_party}"
    if [ -d "${third_party}/${1}" ]; then
        git -C "${third_party}/${1}" pull --quiet --prune
    else
        git -C "${third_party}" clone --quiet --recursive ${2} ${1}
    fi
    git -C "${third_party}/${1}" submodule sync --quiet
    git -C "${third_party}/${1}" submodule update --quiet --init --recursive
}

sync() {
    bold "sklearn sync"
    git_sync numpy https://github.com/numpy/numpy.git
    git_sync scikit-learn https://github.com/scikit-learn/scikit-learn.git
    git_sync lightgbm https://github.com/Microsoft/LightGBM.git
    git_sync xgboost https://github.com/dmlc/xgboost.git
}

install() {
    bold "sklearn install"
    # case "$(uname)" in
    #     "Darwin")
    #         brew list libomp > /dev/null 2>&1 || brew install libomp > /dev/null
    #         export CC=/usr/bin/clang
    #         export CXX=/usr/bin/clang++
    #         export CPPFLAGS="$CPPFLAGS -Xpreprocessor -fopenmp"
    #         export CFLAGS="$CFLAGS -I/usr/local/opt/libomp/include"
    #         export CXXFLAGS="$CXXFLAGS -I/usr/local/opt/libomp/include"
    #         export LDFLAGS="$LDFLAGS -L/usr/local/opt/libomp/lib -lomp"
    #         export DYLD_LIBRARY_PATH=/usr/local/opt/libomp/lib
    #         ;;
    # esac
    [ -n "$(python3 -m pip list --format columns --disable-pip-version-check | grep -w virtualenv)" ] || python3 -m pip install --force-reinstall --user --quiet virtualenv
    [ -d "${virtualenv}" ] || virtualenv --quiet -p python3 ${virtualenv}
    source ${virtualenv}/bin/activate
    python3 -m pip install --quiet six cython pytest flake8 numpy scipy
    python3 -m pip install --quiet --pre -f https://sklearn-nightly.scdn8.secure.raxcdn.com scikit-learn
    # python3 -m pip install --quiet ${third_party}/scikit-learn
    deactivate
}

metadata() {
    bold "sklearn metadata"
    source ${virtualenv}/bin/activate
    pushd ${tools} > /dev/null
    python3 sklearn-script.py
    popd > /dev/null
    deactivate
}

while [ "$#" != 0 ]; do
    command="$1" && shift
    case "${command}" in
        "sync") sync;;
        "install") install;;
        "metadata") metadata;;
    esac
done