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

# Author: Hamilton Kibbe <ham@hamiltonkib.be>
import os
import re
import pytest
import functools
import tempfile
import shutil
from argparse import Namespace
from pathlib import Path

from ..rs274x import GerberFile

from .image_support import gerber_difference


fail_dir = Path('gerbonara_test_failures')
@pytest.fixture(scope='session', autouse=True)
def clear_failure_dir(request):
    for f in fail_dir.glob('*.gbr'):
        f.unlink()

reference_path = lambda reference: Path(__file__).parent / 'resources' / reference

@pytest.fixture
def temp_files(request):
    with tempfile.NamedTemporaryFile(suffix='.gbr') as tmp_out_gbr,\
         tempfile.NamedTemporaryFile(suffix='.png') as tmp_out_png:

        yield Path(tmp_out_gbr.name), Path(tmp_out_png.name)

        if request.node.rep_call.failed:
            module, _, test_name = request.node.nodeid.rpartition('::')
            _test, _, test_name = test_name.partition('_')
            test_name, _, _ext = test_name.partition('.')
            test_name = re.sub(r'[^\w\d]', '_', test_name)
            fail_dir.mkdir(exist_ok=True)
            perm_path_gbr = fail_dir / f'failure_{test_name}.gbr'
            perm_path_png = fail_dir / f'failure_{test_name}.png'
            shutil.copy(tmp_out_gbr.name, perm_path_gbr)
            shutil.copy(tmp_out_png.name, perm_path_png)
            print(f'Failing output saved to {perm_path_gbr}')
            print(f'Difference image saved to {perm_path_png}')
            print(f'Reference file is {reference_path(request.node.funcargs["reference"])}')

@pytest.mark.filterwarnings('ignore:Deprecated.*statement found.*:DeprecationWarning')
@pytest.mark.filterwarnings('ignore::SyntaxWarning')
@pytest.mark.parametrize('reference', [ l.strip() for l in '''
board_outline.GKO
example_outline_with_arcs.gbr
example_two_square_boxes.gbr
example_coincident_hole.gbr
example_cutin.gbr
example_cutin_multiple.gbr
example_flash_circle.gbr
example_flash_obround.gbr
example_flash_polygon.gbr
example_flash_rectangle.gbr
example_fully_coincident.gbr
example_guess_by_content.g0
example_holes_dont_clear.gbr
example_level_holes.gbr
example_not_overlapping_contour.gbr
example_not_overlapping_touching.gbr
example_overlapping_contour.gbr
example_overlapping_touching.gbr
example_simple_contour.gbr
example_single_contour_1.gbr
example_single_contour_2.gbr
example_single_contour_3.gbr
example_am_exposure_modifier.gbr
bottom_copper.GBL
bottom_mask.GBS
bottom_silk.GBO
eagle_files/copper_bottom_l4.gbr
eagle_files/copper_inner_l2.gbr
eagle_files/copper_inner_l3.gbr
eagle_files/copper_top_l1.gbr
eagle_files/profile.gbr
eagle_files/silkscreen_bottom.gbr
eagle_files/silkscreen_top.gbr
eagle_files/soldermask_bottom.gbr
eagle_files/soldermask_top.gbr
eagle_files/solderpaste_bottom.gbr
eagle_files/solderpaste_top.gbr
multiline_read.ger
test_fine_lines_x.gbr
test_fine_lines_y.gbr
top_copper.GTL
top_mask.GTS
top_silk.GTO
'''.splitlines() if l ])
def test_round_trip(temp_files, reference):
    tmp_gbr, tmp_png = temp_files
    ref = reference_path(reference)
    GerberFile.open(ref).save(tmp_gbr)
    mean, max = gerber_difference(ref, tmp_gbr, diff_out=tmp_png)
    assert mean < 1e-6
    assert max < 0.1