from django.test.client import RequestFactory
from django.test import TestCase
from django.core.urlresolvers import reverse

from longclaw.tests.utils import LongclawTestCase, BasketItemFactory, ProductVariantFactory
from longclaw.longclawbasket.utils import basket_id
from longclaw.longclawbasket.templatetags import longclawbasket_tags


class BasketTest(LongclawTestCase):

    def setUp(self):
        request = RequestFactory().get('/')
        request.session = {}
        bid = basket_id(request)
        self.item = BasketItemFactory(basket_id=bid)
        BasketItemFactory(basket_id=bid)

    def test_get_basket(self):
        self.get_test('longclaw_basket_list')

    def test_basket_total_items(self):
        response = self.get_test('longclaw_basket_total_items')

    def test_item_quantity(self):
        self.get_test('longclaw_basket_item_count', {'variant_id': self.item.variant.id})

    def test_create_basket_item(self):
        '''
        Test creating a new basket item
        '''
        variant = ProductVariantFactory()
        self.post_test({'variant_id': variant.id}, 'longclaw_basket_list')

    def test_increase_basket_item(self):
        '''
        Test increasing quantity of basket item
        '''
        self.post_test({'variant_id': self.item.variant.id}, 'longclaw_basket_list')

    def test_remove_item(self):
        '''
        Test removing an item from the basket
        '''
        self.del_test('longclaw_basket_detail', {'variant_id': self.item.variant.id})

    def test_missing_data(self):
        '''
        Test we get a message and 400 status if we dont send data
        '''
        response = self.client.post(reverse('longclaw_basket_list'))
        self.assertEqual(response.status_code, 400)


    def test_add_to_cart_btn(self):
        '''Test the add to cart tag responds
        '''
        result = longclawbasket_tags.add_to_basket_btn(1)
        self.assertIsNotNone(result)


class BasketModelTest(TestCase):

    def setUp(self):
        self.item = BasketItemFactory()

    def test_increase_quantity(self):
        self.item.increase_quantity()
        self.assertEqual(self.item.quantity, 2)

        self.item.increase_quantity(quantity=10)
        self.assertEqual(self.item.quantity, 12)

    def test_decrease_quantity(self):
        self.item.quantity = 5
        self.item.save()
        self.item.decrease_quantity()
        self.assertEqual(self.item.quantity, 4)