from django.core.exceptions import ValidationError
from django.forms import URLField
from django.test import SimpleTestCase

from . import FormFieldAssertionsMixin


class URLFieldTest(FormFieldAssertionsMixin, SimpleTestCase):

    def test_urlfield_widget(self):
        f = URLField()
        self.assertWidgetRendersTo(f, '<input type="url" name="f" id="id_f" required>')

    def test_urlfield_widget_max_min_length(self):
        f = URLField(min_length=15, max_length=20)
        self.assertEqual('http://example.com', f.clean('http://example.com'))
        self.assertWidgetRendersTo(
            f,
            '<input id="id_f" type="url" name="f" maxlength="20" '
            'minlength="15" required>',
        )
        msg = "'Ensure this value has at least 15 characters (it has 12).'"
        with self.assertRaisesMessage(ValidationError, msg):
            f.clean('http://f.com')
        msg = "'Ensure this value has at most 20 characters (it has 37).'"
        with self.assertRaisesMessage(ValidationError, msg):
            f.clean('http://abcdefghijklmnopqrstuvwxyz.com')

    def test_urlfield_clean(self):
        f = URLField(required=False)
        tests = [
            ('http://localhost', 'http://localhost'),
            ('http://example.com', 'http://example.com'),
            ('http://example.com/test', 'http://example.com/test'),
            ('http://example.com.', 'http://example.com.'),
            ('http://www.example.com', 'http://www.example.com'),
            ('http://www.example.com:8000/test', 'http://www.example.com:8000/test'),
            (
                'http://example.com?some_param=some_value',
                'http://example.com?some_param=some_value',
            ),
            ('valid-with-hyphens.com', 'http://valid-with-hyphens.com'),
            ('subdomain.domain.com', 'http://subdomain.domain.com'),
            ('http://200.8.9.10', 'http://200.8.9.10'),
            ('http://200.8.9.10:8000/test', 'http://200.8.9.10:8000/test'),
            ('http://valid-----hyphens.com', 'http://valid-----hyphens.com'),
            (
                'http://some.idn.xyzäöüßabc.domain.com:123/blah',
                'http://some.idn.xyz\xe4\xf6\xfc\xdfabc.domain.com:123/blah',
            ),
            (
                'www.example.com/s/http://code.djangoproject.com/ticket/13804',
                'http://www.example.com/s/http://code.djangoproject.com/ticket/13804',
            ),
            # Normalization.
            ('http://example.com/     ', 'http://example.com/'),
            # Valid IDN.
            ('http://עברית.idn.icann.org/', 'http://עברית.idn.icann.org/'),
            ('http://sãopaulo.com/', 'http://sãopaulo.com/'),
            ('http://sãopaulo.com.br/', 'http://sãopaulo.com.br/'),
            ('http://пример.испытание/', 'http://пример.испытание/'),
            ('http://مثال.إختبار/', 'http://مثال.إختبار/'),
            ('http://例子.测试/', 'http://例子.测试/'),
            ('http://例子.測試/', 'http://例子.測試/'),
            ('http://उदाहरण.परीक्षा/', 'http://उदाहरण.परीक्षा/',),
            ('http://例え.テスト/', 'http://例え.テスト/'),
            ('http://مثال.آزمایشی/', 'http://مثال.آزمایشی/'),
            ('http://실례.테스트/', 'http://실례.테스트/'),
            ('http://العربية.idn.icann.org/', 'http://العربية.idn.icann.org/'),
            # IPv6.
            ('http://[12:34::3a53]/', 'http://[12:34::3a53]/'),
            ('http://[a34:9238::]:8080/', 'http://[a34:9238::]:8080/'),
        ]
        for url, expected in tests:
            with self.subTest(url=url):
                self.assertEqual(f.clean(url), expected)

    def test_urlfield_clean_invalid(self):
        f = URLField()
        tests = [
            'foo',
            'com.',
            '.',
            'http://',
            'http://example',
            'http://example.',
            'http://.com',
            'http://invalid-.com',
            'http://-invalid.com',
            'http://inv-.alid-.com',
            'http://inv-.-alid.com',
            '[a',
            'http://[a',
            # Non-string.
            23,
            # Hangs "forever" before fixing a catastrophic backtracking,
            # see #11198.
            'http://%s' % ('X' * 60,),
            # A second example, to make sure the problem is really addressed,
            # even on domains that don't fail the domain label length check in
            # the regex.
            'http://%s' % ("X" * 200,),
            # urlsplit() raises ValueError.
            '////]@N.AN',
            # Empty hostname.
            '#@A.bO',
        ]
        msg = "'Enter a valid URL.'"
        for value in tests:
            with self.subTest(value=value):
                with self.assertRaisesMessage(ValidationError, msg):
                    f.clean(value)

    def test_urlfield_clean_required(self):
        f = URLField()
        msg = "'This field is required.'"
        with self.assertRaisesMessage(ValidationError, msg):
            f.clean(None)
        with self.assertRaisesMessage(ValidationError, msg):
            f.clean('')

    def test_urlfield_clean_not_required(self):
        f = URLField(required=False)
        self.assertEqual(f.clean(None), '')
        self.assertEqual(f.clean(''), '')

    def test_urlfield_strip_on_none_value(self):
        f = URLField(required=False, empty_value=None)
        self.assertIsNone(f.clean(''))
        self.assertIsNone(f.clean(None))

    def test_urlfield_unable_to_set_strip_kwarg(self):
        msg = "__init__() got multiple values for keyword argument 'strip'"
        with self.assertRaisesMessage(TypeError, msg):
            URLField(strip=False)