#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import os
import tempfile

from scilpy import SCILPY_HOME
from scilpy.io.fetcher import fetch_data, get_testing_files_dict

# If they already exist, this only takes 5 seconds (check md5sum)
fetch_data(get_testing_files_dict(), keys=['bst.zip'])
tmp_dir = tempfile.TemporaryDirectory()


def test_help_option(script_runner):
    ret = script_runner.run(['scil_tractogram_apply_transform', '--help'])
    assert ret.success


def test_execution_inverse(script_runner, monkeypatch):
    monkeypatch.chdir(os.path.expanduser(tmp_dir.name))
    in_model = os.path.join(SCILPY_HOME, 'bst', 'template', 'rpt_m.trk')
    in_fa = os.path.join(SCILPY_HOME, 'bst', 'fa.nii.gz')
    in_aff = os.path.join(SCILPY_HOME, 'bst', 'output0GenericAffine.mat')
    in_warp = os.path.join(SCILPY_HOME, 'bst', 'output1InverseWarp.nii.gz')

    ret = script_runner.run(['scil_tractogram_apply_transform',
                             in_model, in_fa, in_aff, 'rpt_m_warp.trk',
                             '--inverse', '--in_deformation', in_warp,
                             '--cut'])
    assert ret.success
