from datetime import date, datetime
from unittest import mock

import pytz
from django.conf import settings
from django.core import mail
from django.core.exceptions import ValidationError
from django.test import TestCase, override_settings

from oscar.apps.customer.forms import (
    EmailUserCreationForm, OrderSearchForm, PasswordResetForm)
from oscar.test.factories import UserFactory


class TestEmailUserCreationForm(TestCase):

    @mock.patch('oscar.apps.customer.forms.validate_password')
    def test_validator_passed_populated_user(self, mocked_validate):
        mocked_validate.side_effect = ValidationError('That password is rubbish')

        form = EmailUserCreationForm(data={'email': 'terry@boom.com', 'password1': 'terry', 'password2': 'terry'})
        self.assertFalse(form.is_valid())

        mocked_validate.assert_called_once_with('terry', form.instance)
        self.assertEqual(mocked_validate.call_args[0][1].email, 'terry@boom.com')
        self.assertEqual(form.errors['password2'], ['That password is rubbish'])


class TestPasswordResetForm(TestCase):

    def test_user_email_unicode_collision(self):
        # Regression test for CVE-2019-19844, which Oscar's PasswordResetForm
        # was vulnerable to because it had overridden the save() method.
        UserFactory(username='mike123', email='mike@example.org')
        UserFactory(username='mike456', email='mıke@example.org')
        form = PasswordResetForm({'email': 'mıke@example.org'})
        self.assertTrue(form.is_valid())
        form.save()
        self.assertEqual(len(mail.outbox), 1)
        self.assertEqual(mail.outbox[0].to, ['mıke@example.org'])


class TestOrderSearchForm(TestCase):

    @override_settings(TIME_ZONE='Africa/Nairobi')
    def test_get_filters(self):
        form = OrderSearchForm(data={
            'date_from': date(2021, 1, 1),
            'date_to': date(2021, 1, 10),
            'order_number': '100'
        })
        self.assertTrue(form.is_valid())

        filters = form.get_filters()
        nbi = pytz.timezone(settings.TIME_ZONE)
        self.assertEqual(filters, {
            'date_placed__gte': nbi.localize(datetime(2021, 1, 1)),
            'date_placed__lte': nbi.localize(datetime(2021, 1, 10, 23, 59, 59, 999999)),
            'number__contains': '100',
        })