# -*- coding: utf-8 -*-
from __future__ import absolute_import, unicode_literals

from importlib import import_module
from requests.exceptions import HTTPError

from django.conf import settings
from django.contrib.auth.models import User
from django.core import mail
from django.test.client import RequestFactory
from django.test.utils import override_settings
from django.urls import reverse

from allauth.account import app_settings as account_settings
from allauth.account.adapter import get_adapter
from allauth.account.models import EmailAddress, EmailConfirmation
from allauth.account.signals import user_signed_up
from allauth.socialaccount.models import SocialAccount, SocialToken
from allauth.socialaccount.tests import OAuth2TestsMixin
from allauth.tests import MockedResponse, TestCase, patch

from .provider import GoogleProvider


@override_settings(
    SOCIALACCOUNT_AUTO_SIGNUP=True,
    ACCOUNT_SIGNUP_FORM_CLASS=None,
    ACCOUNT_EMAIL_VERIFICATION=account_settings
    .EmailVerificationMethod.MANDATORY)
class GoogleTests(OAuth2TestsMixin, TestCase):
    provider_id = GoogleProvider.id

    def get_mocked_response(self,
                            family_name='Penners',
                            given_name='Raymond',
                            name='Raymond Penners',
                            email="raymond.penners@example.com",
                            verified_email=True):
        return MockedResponse(200, """
              {"family_name": "%s", "name": "%s",
               "picture": "https://lh5.googleusercontent.com/photo.jpg",
               "locale": "nl", "gender": "male",
               "email": "%s",
               "link": "https://plus.google.com/108204268033311374519",
               "given_name": "%s", "id": "108204268033311374519",
               "verified_email": %s }
        """ % (family_name,
               name,
               email,
               given_name,
               (repr(verified_email).lower())))

    def test_google_compelete_login_401(self):
        from allauth.socialaccount.providers.google.views import \
            GoogleOAuth2Adapter

        class LessMockedResponse(MockedResponse):
            def raise_for_status(self):
                if self.status_code != 200:
                    raise HTTPError(None)
        request = RequestFactory().get(
            reverse(self.provider.id + '_login'),
            dict(process='login'))

        adapter = GoogleOAuth2Adapter(request)
        app = adapter.get_provider().get_app(request)
        token = SocialToken(token='some_token')
        response_with_401 = LessMockedResponse(
            401, """
            {"error": {
              "errors": [{
                "domain": "global",
                "reason": "authError",
                "message": "Invalid Credentials",
                "locationType": "header",
                "location": "Authorization" } ],
              "code": 401,
              "message": "Invalid Credentials" }
            }""")
        with patch(
                'allauth.socialaccount.providers.google.views'
                '.requests') as patched_requests:
            patched_requests.get.return_value = response_with_401
            with self.assertRaises(HTTPError):
                adapter.complete_login(request, app, token)

    def test_username_based_on_email(self):
        first_name = '明'
        last_name = '小'
        email = "raymond.penners@example.com"
        self.login(self.get_mocked_response(name=first_name + ' ' + last_name,
                                            email=email,
                                            given_name=first_name,
                                            family_name=last_name,
                                            verified_email=True))
        user = User.objects.get(email=email)
        self.assertEqual(user.username, 'raymond.penners')

    def test_email_verified(self):
        test_email = "raymond.penners@example.com"
        self.login(self.get_mocked_response(verified_email=True))
        email_address = EmailAddress.objects \
            .get(email=test_email,
                 verified=True)
        self.assertFalse(EmailConfirmation.objects
                         .filter(email_address__email=test_email)
                         .exists())
        account = email_address.user.socialaccount_set.all()[0]
        self.assertEqual(account.extra_data['given_name'], 'Raymond')

    def test_user_signed_up_signal(self):
        sent_signals = []

        def on_signed_up(sender, request, user, **kwargs):
            sociallogin = kwargs['sociallogin']
            self.assertEqual(sociallogin.account.provider,
                             GoogleProvider.id)
            self.assertEqual(sociallogin.account.user,
                             user)
            sent_signals.append(sender)

        user_signed_up.connect(on_signed_up)
        self.login(self.get_mocked_response(verified_email=True))
        self.assertTrue(len(sent_signals) > 0)

    @override_settings(ACCOUNT_EMAIL_CONFIRMATION_HMAC=False)
    def test_email_unverified(self):
        test_email = "raymond.penners@example.com"
        resp = self.login(self.get_mocked_response(verified_email=False))
        email_address = EmailAddress.objects \
            .get(email=test_email)
        self.assertFalse(email_address.verified)
        self.assertTrue(EmailConfirmation.objects
                        .filter(email_address__email=test_email)
                        .exists())
        self.assertTemplateUsed(
            resp,
            'account/email/email_confirmation_signup_subject.txt')

    def test_email_verified_stashed(self):
        # http://slacy.com/blog/2012/01/how-to-set-session-variables-in-django-unit-tests/
        engine = import_module(settings.SESSION_ENGINE)
        store = engine.SessionStore()
        store.save()
        self.client.cookies[settings.SESSION_COOKIE_NAME] = store.session_key
        request = RequestFactory().get('/')
        request.session = self.client.session
        adapter = get_adapter(request)
        test_email = "raymond.penners@example.com"
        adapter.stash_verified_email(request, test_email)
        request.session.save()

        self.login(self.get_mocked_response(verified_email=False))
        email_address = EmailAddress.objects \
            .get(email=test_email)
        self.assertTrue(email_address.verified)
        self.assertFalse(
            EmailConfirmation.objects.filter(
                email_address__email=test_email).exists())

    def test_account_connect(self):
        email = "user@example.com"
        user = User.objects.create(username='user',
                                   is_active=True,
                                   email=email)
        user.set_password('test')
        user.save()
        EmailAddress.objects.create(user=user,
                                    email=email,
                                    primary=True,
                                    verified=True)
        self.client.login(username=user.username,
                          password='test')
        self.login(self.get_mocked_response(verified_email=True),
                   process='connect')
        # Check if we connected...
        self.assertTrue(SocialAccount.objects.filter(
            user=user,
            provider=GoogleProvider.id).exists())
        # For now, we do not pick up any new e-mail addresses on connect
        self.assertEqual(EmailAddress.objects.filter(user=user).count(), 1)
        self.assertEqual(EmailAddress.objects.filter(
            user=user,
            email=email).count(), 1)

    @override_settings(
        ACCOUNT_EMAIL_VERIFICATION=account_settings
        .EmailVerificationMethod.MANDATORY,
        SOCIALACCOUNT_EMAIL_VERIFICATION=account_settings
        .EmailVerificationMethod.NONE
    )
    def test_social_email_verification_skipped(self):
        test_email = "raymond.penners@example.com"
        self.login(self.get_mocked_response(verified_email=False))
        email_address = EmailAddress.objects.get(email=test_email)
        self.assertFalse(email_address.verified)
        self.assertFalse(EmailConfirmation.objects.filter(
            email_address__email=test_email).exists())

    @override_settings(
        ACCOUNT_EMAIL_VERIFICATION=account_settings
        .EmailVerificationMethod.OPTIONAL,
        SOCIALACCOUNT_EMAIL_VERIFICATION=account_settings
        .EmailVerificationMethod.OPTIONAL
    )
    def test_social_email_verification_optional(self):
        self.login(self.get_mocked_response(verified_email=False))
        self.assertEqual(len(mail.outbox), 1)
        self.login(self.get_mocked_response(verified_email=False))
        self.assertEqual(len(mail.outbox), 1)


@override_settings(
    SOCIALACCOUNT_PROVIDERS={
        'google': {
            'APP': {
                'client_id': 'app123id',
                'key': 'google',
                'secret': 'dummy'
            }
        }
    }
)
class AppInSettingsTests(GoogleTests):
    """
    Run the same set of tests but without having a SocialApp entry.
    """
    pass
