#!/bin/bash

set -eux

# Prefer python3 on python2
PYTHON=$(which python3 || which python)

# Create a virtualenv for executing Tox and activate it
BASE_VIRTUALENV_DIR=.tox/base
if ! [ -d "${BASE_VIRTUALENV_DIR}" ]; then
    "${PYTHON}" -m virtualenv "${BASE_VIRTUALENV_DIR}"
    set +eux
    source "${BASE_VIRTUALENV_DIR}/bin/activate"
    set -eux
    curl https://bootstrap.pypa.io/get-pip.py | python
    pip install --upgrade setuptools wheel virtualenv tox
else
    set +eux
    source "${BASE_VIRTUALENV_DIR}/bin/activate"
    set -eux
fi

tox "$*"