from django.contrib.auth import get_user_model
from django.urls import reverse
from django.test import TestCase
from rest_framework import status
from core.models import Ingredient
from rest_framework.test import APIClient
from recipe.serializers import IngredientSerializer


INGREDIENT_URL = reverse('recipe:ingredient-list')


class PublicIngredientAPIView(TestCase):

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

    def test_user_authrized(self):
        res = self.client.get(INGREDIENT_URL)
        self.assertEqual(res.status_code, status.HTTP_401_UNAUTHORIZED)


class PrivateIngredientAPIView(TestCase):

    def setUp(self):
        self.client = APIClient()
        self.user = get_user_model().objects.create_user(
            '<EMAIL>',
            '<PASSWORD>'
        )
        self.client.force_authenticate(self.user)

    def test_retrieve_ingredient_list(self):
        Ingredient.objects.create(user=self.user, name='kale')
        Ingredient.objects.create(user=self.user, name='cavegge')
        res = self.client.get(INGREDIENT_URL)

        ingredients = Ingredient.objects.all().order_by('-name')
        serializer = IngredientSerializer(ingredients, many=True)
        self.assertEqual(res.status_code, status.HTTP_200_OK)
        self.assertEqual(res.data, serializer.data)

    def test_ingredients_limited_user(self):
        user2 = get_user_model().objects.create(
            email='<EMAIL>', password='<PASSWORD>'
        )
        Ingredient.objects.create(user=user2, name="kale")
        ingredient = Ingredient.objects.create(user=self.user, name="awfeoij")
        res = self.client.get(INGREDIENT_URL)
        self.assertEqual(res.status_code, status.HTTP_200_OK)
        self.assertEqual(len(res.data), 1)
        self.assertEqual(res.data[0]['name'], ingredient.name)

    def test_ingredient_create_successful(self):
        payload = {'name': 'cabagge'}
        self.client.post(INGREDIENT_URL, payload)
        exists = Ingredient.objects.filter(
            user=self.user,
            name=payload['name']
        ).exists()
        self.assertTrue(exists)

    def test_create_ingredient_invalid(self):
        payload = {'name': ''}
        res = self.client.post(INGREDIENT_URL, payload)
        self.assertEqual(res.status_code, status.HTTP_400_BAD_REQUEST)
