from lxml import etree
from os import getcwd
from os.path import isfile, join, isdir
from pytest import fixture, raises
from os import listdir
from json import load

from rougail import Rougail
from rougail.error import DictConsistencyError
from rougail.config import Config



dico_dirs = 'tests/dictionaries'


test_ok = set()
test_raise = set()

for test in listdir(dico_dirs):
    if isdir(join(dico_dirs, test)):
        if isdir(join(dico_dirs, test, 'tiramisu')):
            test_ok.add(test)
        elif test != '__pycache__':
            test_raise.add(test)

excludes = set([])
#excludes = set(['01base_file_utfchar'])
test_ok -= excludes
test_raise -= excludes
#test_ok = ['01auto_autofreeze']
#test_ok = []
#test_raise = ['80auto_autofreeze']
#test_raise = []

ORI_DIR = getcwd()

debug = False
#debug = True

test_ok = list(test_ok)
test_raise = list(test_raise)
test_ok.sort()
test_raise.sort()


@fixture(scope="module", params=test_ok)
def test_dir(request):
    return request.param


@fixture(scope="module", params=test_raise)
def test_dir_error(request):
    return request.param


def launch_flattener(test_dir, test_ok=False):
    eolobj = Rougail(Config['dtdfilename'])
    dirs = [test_dir]
    subfolder = join(test_dir, 'subfolder')
    if isdir(subfolder):
        dirs.append(subfolder)
    eolobj.create_or_populate_from_xml(Config['variable_namespace'], dirs)
    subfolder = join(test_dir, 'extra_dirs', 'extra')
    if isdir(subfolder):
        eolobj.create_or_populate_from_xml('extra', [subfolder])
    subfolder = join(test_dir, 'extra_dirs', 'extra1')
    if isdir(subfolder):
        eolobj.create_or_populate_from_xml('extra1', [subfolder])
    eosfunc = join(dico_dirs, '../eosfunc/test.py')
    Config['patch_dir'] = join(test_dir, 'patches')
    eolobj.space_visitor(eosfunc)
    tiramisu_objects = eolobj.save()
    if 'children=[]' in tiramisu_objects.split('\n')[-2]:
        raise Exception('empty tiramisu object?')
    tiramisu_dir = join(test_dir, 'tiramisu')
    if isdir(tiramisu_dir):
        tiramisu_file = join(tiramisu_dir, 'base.py')
        if not isfile(tiramisu_file) or debug:
            with open(tiramisu_file, 'w') as fh:
                fh.write(tiramisu_objects)
        with open(tiramisu_file, 'r') as fh:
            tiramisu_objects_ori = fh.read()
        assert tiramisu_objects == tiramisu_objects_ori


def test_dictionary(test_dir):
    assert getcwd() == ORI_DIR
    test_dir = join(dico_dirs, test_dir)
    launch_flattener(test_dir, True)
    assert getcwd() == ORI_DIR


def test_error_dictionary(test_dir_error):
    assert getcwd() == ORI_DIR
    test_dir = join(dico_dirs, test_dir_error)
    errno = 0
    for i in listdir(test_dir):
        if i.startswith('errno_'):
            if errno:
                raise Exception('multiple errno')
            errno = int(i.split('_')[1])
    with raises(DictConsistencyError) as err:
        launch_flattener(test_dir)
    if err.value.errno != errno:
        print(f'expected errno: {errno}, errno: {err.value.errno}')
        launch_flattener(test_dir)
    assert getcwd() == ORI_DIR


def test_no_dtd():
    with raises(IOError):
        eolobj = Rougail('notexists.dtd')