from django.contrib.auth.models import User
from django.test import TestCase
from django.urls import reverse

from bookmarks.tests.helpers import BookmarkFactoryMixin


class PasswordChangeViewTestCase(TestCase, BookmarkFactoryMixin):
    def setUp(self) -> None:
        self.user = User.objects.create_user('testuser', 'test@example.com', 'initial_password')
        self.client.force_login(self.user)

    def test_change_password(self):
        form_data = {
            'old_password': 'initial_password',
            'new_password1': 'new_password',
            'new_password2': 'new_password',
        }

        response = self.client.post(reverse('change_password'), form_data)

        self.assertRedirects(response, reverse('password_change_done'))

    def test_change_password_done(self):
        form_data = {
            'old_password': 'initial_password',
            'new_password1': 'new_password',
            'new_password2': 'new_password',
        }

        response = self.client.post(reverse('change_password'), form_data, follow=True)

        self.assertContains(response, 'Your password was changed successfully')

    def test_should_return_error_for_invalid_old_password(self):
        form_data = {
            'old_password': 'wrong_password',
            'new_password1': 'new_password',
            'new_password2': 'new_password',
        }

        response = self.client.post(reverse('change_password'), form_data)

        self.assertIn('old_password', response.context_data['form'].errors)

    def test_should_return_error_for_mismatching_new_password(self):
        form_data = {
            'old_password': 'initial_password',
            'new_password1': 'new_password',
            'new_password2': 'wrong_password',
        }

        response = self.client.post(reverse('change_password'), form_data)

        self.assertIn('new_password2', response.context_data['form'].errors)