from django.contrib.auth import get_user_model
from django.contrib.auth.tokens import default_token_generator
from django.shortcuts import reverse
from django.test import TransactionTestCase
from django.utils.encoding import force_bytes
from django.utils.http import urlsafe_base64_encode

User = get_user_model()


class TestResetPassword(TransactionTestCase):
    def setUp(self) -> None:
        self.password = 'theonering'
        self.email = 'sauron@mordor.middleearth'
        self.first_name = 'Sauron'
        self.last_name = 'The Lord of the Rings'

        self.user = User.objects.create_user(
            username=self.email, password=self.password, first_name=self.first_name, last_name=self.last_name
        )

    def test_get_reset_password_page(self):
        response = self.client.get(reverse('users:reset_password'))
        assert response.status_code == 200

    def test_reset_password(self):
        response = self.client.post(reverse('users:reset_password'), {'email': self.email})

        assert response.status_code == 302
        assert response.url == reverse('users:reset_password_email_sent')

    def test_reset_password_not_existing_user(self):
        response = self.client.post(reverse('users:reset_password'), {'email': 'vanpiro@noesiten.com'})

        assert response.status_code == 302
        assert response.url == reverse('users:reset_password_email_sent')

    def test_reset_password_confirm_get(self):
        token = default_token_generator.make_token(self.user)
        uidb64 = urlsafe_base64_encode(force_bytes(self.user.pk))

        response = self.client.get(reverse('users:reset_password_confirm', kwargs={'uidb64': uidb64, 'token': token}))

        assert response.status_code == 200

    def test_reset_password_confirm(self):
        token = default_token_generator.make_token(self.user)
        form_token = default_token_generator.make_token(self.user)
        uidb64 = urlsafe_base64_encode(force_bytes(self.user.pk))

        new_password = '89733wy29'

        response = self.client.post(
            reverse('users:reset_password_confirm', kwargs={'uidb64': uidb64, 'token': token}),
            {'token': form_token, 'new_password1': new_password, 'new_password2': new_password},
        )
        assert response.status_code == 302
        assert response.url == reverse('users:login')
        self.user.refresh_from_db()

        assert self.user.check_password(new_password)

    def test_reset_password_confirm_distinct_password(self):
        token = default_token_generator.make_token(self.user)
        form_token = default_token_generator.make_token(self.user)
        uidb64 = urlsafe_base64_encode(force_bytes(self.user.pk))

        new_password = '89733wy29'

        response = self.client.post(
            reverse('users:reset_password_confirm', kwargs={'uidb64': uidb64, 'token': token}),
            {'token': form_token, 'new_password1': new_password, 'new_password2': 'otherpassw13'},
        )
        assert response.status_code == 200

    def test_reset_password_confirm_invalid_token(self):
        token = default_token_generator.make_token(self.user)
        form_token = 'invalid token'
        uidb64 = urlsafe_base64_encode(force_bytes(self.user.pk))

        new_password = '89733wy29'

        response = self.client.post(
            reverse('users:reset_password_confirm', kwargs={'uidb64': uidb64, 'token': token}),
            {'token': form_token, 'new_password1': new_password, 'new_password2': new_password},
        )
        assert response.status_code == 200