import os
from pytest import fixture  # , raises
from pathlib import Path
from rougail import Rougail
#########################
from rougail.user_data_yaml import RougailUserDataYaml as RougailUserData
from json import load, dump
from ruamel.yaml import YAML
#########################

from rougail_tests.utils import get_structures_list, get_rougail_config, get_values_for_config, config_to_dict

EXT = "yml"

excludes = []
excludes = [
            '40_0leadership_follower_default_submulti',  # submulti is not allowed
            '40_0leadership_follower_default_submulti_calculation',  # submulti is not allowed
            '40_6leadership_follower_multi',  # submulti is not allowed
            ]

test_ok = get_structures_list(excludes)
# test_ok = [Path('../rougail-tests/structures/60_9extra_dynamic')]


def idfn(fixture_value):
    return fixture_value.name


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


def _test_dictionaries(test_dir, namespace, ext, *, level, need_exclude=False):
    rougailconfig = get_rougail_config(test_dir, namespace)
    if not rougailconfig:
        return
    ##################################
    rougailconfig['step.user_data'] = ['yaml']
    ##################################
    dir_name = 'test'
    if namespace:
        dir_name += '_namespace'
    elif (test_dir / 'force_namespace').is_file():
        return
    rougail = Rougail(rougailconfig)
    config = rougail.run()
    ##################################
    root_path = Path('tests') / 'results' / test_dir.name
    makedict = root_path /  'makedict' / f'{level}.json'
    filename = root_path /  'file'
    if need_exclude:
        filename = filename / f'{level}_exclude.{EXT}'
    else:
        filename = filename / f'{level}.{EXT}'
    populate(filename, makedict, rougailconfig, level, need_exclude)
    rougailconfig['yaml.filename'] = [str(filename)]
    ##################################
    # loads variables in the tiramisu config
    generated_user_data = RougailUserData(config, rougailconfig=rougailconfig).run()
    errors = rougail.user_datas(generated_user_data)
    #expected output
    with open(Path('tests') / 'results' / test_dir.name /  'makedict' / f'{level}.json') as json_file:
        expected = load(json_file)
    # here is the effective test
    errors_file = Path('tests') / 'results' / test_dir.name /  'errors' / f'{level}.json'
    if not errors_file.is_file():
        errors_file.parent.mkdir(parents=True, exist_ok=True)
        with open(errors_file, 'a') as json_file:
            dump(errors, json_file, indent=4)
    with open(errors_file) as json_file:
        expected_errors = load(json_file)
    # expected_errors = {
    #     'errors': [],
    #     'warnings': [],
    # }
    assert expected_errors == errors
    #
    config.property.read_only()
    config_dict = dict(config_to_dict(config.value.get()))
    assert expected == config_dict


def populate(filename, makedict_file, rougailconfig, level, need_exclude):
    if filename.is_file() and makedict_file.is_file():
        return
    config = Rougail(rougailconfig).run()
    values = get_values_for_config(config, not need_exclude, level)
    if not filename.is_file():
        filename.parent.mkdir(parents=True, exist_ok=True)
        with filename.open('w') as fh:
            ##############################################
            dump(values, fh, indent=4)
            ##############################################
    if  not makedict_file.is_file():
        makedict_file.parent.mkdir(parents=True, exist_ok=True)
        config.property.read_only()
        config_dict = dict(config_to_dict(config.value.get()))
        with makedict_file.open('w') as fh:
            dump(config_dict, fh, indent=4)
            fh.write('\n')


def test_dictionaries_all(test_dir):
    "tests the output"
    _test_dictionaries(test_dir, True, EXT, level='all')


def test_dictionaries_all_exclude(test_dir):
    "tests the output"
    _test_dictionaries(test_dir, True, EXT, level='all', need_exclude=True)


def test_dictionaries_mandatories(test_dir):
    "tests the output"
    _test_dictionaries(test_dir, True, EXT, level='mandatories')