from django.urls import reverse
from rest_framework import status
from rest_framework.test import APITestCase
from django.contrib.auth.models import User


def create_todo(client, title):
    url = reverse("ToDoLists-list")
    response = client.post(url, {"title": title}, format="json")
    return response


class ToDoTest(APITestCase):
    """Tests API for todo."""

    def get(self, expected_titles):
        url = reverse("ToDoLists-list")
        response = self.client.get(url, {}, format="json")
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        real_titles = [data["title"] for data in response.data["results"]]
        self.assertEqual(real_titles, expected_titles)

    def post(self, to_do_title):
        response = create_todo(self.client, to_do_title)
        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
        self.assertEqual(response.data["title"], to_do_title)
        return response.data["id"]

    def get_by_id(self, id, expected_title):
        url_with_id = reverse("ToDoLists-detail", args=(id,))
        response = self.client.get(url_with_id, {id: id}, format="json")
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(response.data["title"], expected_title)

    def put(self, id, new_title):
        url_with_id = reverse("ToDoLists-detail", args=(id,))
        response = self.client.put(url_with_id, {"title": new_title}, format="json")
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(response.data["title"], new_title)

    def patch(self, id, new_title):
        url_with_id = reverse("ToDoLists-detail", args=(id,))
        response = self.client.patch(url_with_id, {"title": new_title}, format="json")
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(response.data["title"], new_title)

    def delete(self, id, title):
        self.get_by_id(id, title)
        url_with_id = reverse("ToDoLists-detail", args=(id,))
        response = self.client.delete(url_with_id, {}, format="json")
        self.assertEqual(response.status_code, status.HTTP_204_NO_CONTENT)

    def prepare(self):
        user = User.objects.create_user("test_user", "test@test.com", "test_password")
        self.client.force_authenticate(user=user)

    def test_create_delete(self):
        """
        lists/{id}/: put (update), patch (partial_update)
        """
        self.prepare()
        to_do_title_1 = "ToDoList1"
        to_do_id1 = self.post(to_do_title_1)
        self.put(to_do_id1, "ToDoList11")
        self.patch(to_do_id1, "ToDoList12")

    def test_todo(self):
        """
        lists/: get, post
        lists/{id}/: get, delete
        """

        self.prepare()
        self.get([])
        to_do_title_1, to_do_title_2 = "ToDoList1", "ToDoList2"
        to_do_id1 = self.post(to_do_title_1)
        self.get([to_do_title_1])
        to_do_id2 = self.post(to_do_title_2)
        self.get([to_do_title_1, to_do_title_2])

        self.get_by_id(to_do_id1, to_do_title_1)
        self.get_by_id(to_do_id2, to_do_title_2)

        self.delete(to_do_id2, to_do_title_2)
        self.get([to_do_title_1])