from http import HTTPStatus

from django.contrib.auth import get_user_model
from django.test import TestCase, Client
from django.urls import reverse

from notes.models import Note


class TestRoutes(TestCase):
    @classmethod
    def setUpTestData(cls):
        cls.test_user1 = get_user_model().objects.create_user(
            username='testuser1',
            password='12345'
        )
        cls.test_user2 = get_user_model().objects.create_user(
            username='testuser2',
            password='12345'
        )
        cls.note1 = Note.objects.create(
            title="Test Note 1",
            text="Test Note Text",
            author=cls.test_user1
        )
        cls.note2 = Note.objects.create(
            title="Test Note 2",
            text="Test Note Text",
            author=cls.test_user2
        )
        cls.url_names_with_slug = [
            'notes:edit',
            'notes:detail',
            'notes:delete'
        ]
        cls.url_names_without_args = [
            'notes:list',
            'notes:success',
            'notes:add',
            'notes:home'
        ]
        cls.auth_url_names = [
            'users:login',
            'users:logout',
            'users:signup'
        ]

    def setUp(self):
        self.client = Client()

    def test_urls_availability(self):
        users = [self.test_user1, self.test_user2, None]
        for user in users:
            if user is not None:
                self.client.login(username=user.username, password='12345')
            else:
                self.client.logout()
            for name in self.url_names_with_slug:
                with self.subTest(user=user, url=name):
                    url = reverse(name, args=[self.note1.slug])
                    response = self.client.get(url)
                    if user is self.test_user1 or (
                            user is None and name
                            not in self.url_names_with_slug
                    ):
                        self.assertEqual(response.status_code, HTTPStatus.OK)
                    elif user is self.test_user2:
                        self.assertEqual(
                            response.status_code,
                            HTTPStatus.NOT_FOUND
                        )
                    else:
                        login_url = reverse('users:login')
                        next_url = url
                        redirect_url = f"{login_url}?next={next_url}"
                        self.assertRedirects(response, redirect_url)

            for name in self.url_names_without_args:
                with self.subTest(user=user, url=name):
                    url = reverse(name)
                    response = self.client.get(url)
                    if user is not None or name == 'notes:home':
                        self.assertEqual(response.status_code, HTTPStatus.OK)
                    else:
                        login_url = reverse('users:login')
                        next_url = url
                        redirect_url = f"{login_url}?next={next_url}"
                        self.assertRedirects(response, redirect_url)

            for name in self.auth_url_names:
                with self.subTest(user=user, url=name):
                    url = reverse(name)
                    response = self.client.get(url)
                    self.assertEqual(response.status_code, HTTPStatus.OK)