#!/usr/bin/env bash

# check for freesurfer home
[ ! -e "$FREESURFER_HOME" ] && echo "error: freesurfer has not been properly sourced" && exit 1

# point to freesurfer-installed packages and make sure that PYTHONPATH is entirely
# overwritten, since we don't want any user packages to interfere with things
export PYTHONPATH="${FREESURFER_HOME}/python/packages"

# futhermore, prevent local user packages from being accessed in fspython
# since we want a very isolated environment
export PYTHONNOUSERSITE=1
unset PYTHONUSERBASE

# don't check for pip upgrades, since it confuses people
export PIP_DISABLE_PIP_VERSION_CHECK=1

# run python
if [ -e "${FREESURFER_HOME}/python/bin/python3" ]; then
    exec ${FREESURFER_HOME}/python/bin/python3 "$@"
else
    echo "error: fspython has not been configured correctly - \$FREESURFER_HOME/python/bin/python3 does not exist"
    exit 1
fi