# coding=utf-8

from __future__ import absolute_import, print_function, unicode_literals

from pytest import fixture, raises
from wtforms import Form, StringField
from wtforms.validators import ValidationError

from abilian.web.forms.validators import siret_validator


class DummyForm(Form):
    name = StringField('foo')
    siret = StringField('Siret')


class DummyField(object):

    def __init__(self, data, errors=(), raw_data=None):
        self.data = data
        self.errors = list(errors)
        self.raw_data = raw_data


def error_message(validator, form, field):
    try:
        validator(form, field)
    except ValidationError as e:
        return e.args[0]


@fixture()
def validator():
    yield siret_validator()


def test_siret_validator_valid_1(validator):
    # valid
    form = DummyForm(siret="54207855500514", name="foo")
    field = form.siret
    assert validator(form, field) is None


def test_siret_validator_valid_2(validator):
    # valid
    form = DummyForm(siret="54207855500514", name="foo")
    field = form.siret
    assert validator(form, field) is None


def test_siret_validator_invalid_luhn(validator):
    # invalid Luhn (changed the first digit)
    form = DummyForm(siret="64207855500514", name="foo")
    field = form.siret
    with raises(ValidationError):
        validator(form, field)


def test_siret_validator_invalid_2(validator):
    # invalid
    form = DummyForm(siret="WRONG542078555", name="foo")
    field = form.siret
    with raises(ValidationError):
        validator(form, field)


def test_siret_validator_too_short(validator):
    # too short
    form = DummyForm(siret="54207", name="foo")
    field = form.siret
    with raises(ValidationError):
        validator(form, field)


def test_siret_ok():
    siret = siret_validator()
    form = DummyForm()
    assert siret(form, DummyField('78913349300013')) is None
    assert siret(form, DummyField('MONACOCONFO001')) is None

    # test other geographical exceptions; WARNING! the siret format is probably
    # not right, but we had no example in the spec; only geo codes...
    assert siret(form, DummyField('MONACOCONFO458')) is None
    assert siret(form, DummyField('MONACOCONFO462')) is None
    assert siret(form, DummyField('MONACOCONFO496')) is None
    assert siret(form, DummyField('MONACOCONFO372')) is None


def test_siret_ko_special_siret(validator):
    form = DummyForm()

    field = DummyField('MONACOCONFO999')
    with raises(ValidationError):
        validator(form, field)
    assert error_message(validator, form, field) == \
        'SIRET looks like special SIRET but geographical code seems invalid (999)'


def test_siret_ko_invalid_length(validator):
    # invalid length
    form = DummyForm()
    field = DummyField('42342435')
    with raises(ValidationError):
        validator(form, field)
    assert error_message(validator, form, field) == \
        'SIRET must have exactly 14 characters (8)'


def test_siret_ko_invalid_luhn(validator):
    # invalid checksum
    form = DummyForm()
    field = DummyField('78913349300011')
    with raises(ValidationError):
        validator(form, field)
    assert error_message(validator, form, field) == \
        'SIRET number is invalid (length is ok: verify numbers)'
