#!/bin/bash

for pkg in virtualenv; do
    which ${pkg}
    ret=${?}
    if [ "${ret}" != "0" ]; then
        echo "${pkg} not found. Please install it and try again." 1>&2
        exit ${ret}
    fi
done

basedir=$(dirname $0)
rm -rf ${basedir}/venv

if [ ! -d ${basedir}/venv ] || [ "$(ls -A ${basedir}/venv)" == "" ]; then
    virtualenv -p python3.6 ${basedir}/venv
fi

pushd ${basedir} >/dev/null 2>&1
. venv/bin/activate
pip3 install --upgrade --use-feature=2020-resolver -r requirements.txt
popd >/dev/null 2>&1

exit 0