from unittest.mock import patch

import requests
from django.contrib.auth.models import AnonymousUser
from django.contrib.sessions.middleware import SessionMiddleware
from django.test import TestCase, RequestFactory
from graphene.test import Client

from api.schema import schema
from core.factories import UserFactory
from oauth.factories import Oauth2TokenFactory
from users.tests.mock_hep_data_factory import MockResponse, VALID_TEACHERS_ORDERS
from users.models import License, Role, SchoolClass

REDEEM_MYSKILLBOX_SUCCESS_RESPONSE = {
    "data": {
        "id": 3433,
        "uri": "\/products\/myskillbox-lehrpersonen",
        "url": None,
        "title": "mySkillbox für Lehrpersonen ",
        "subtitle": "Lizenz gültig für 1 Jahr",
        "isbn": "978-3-0355-1861-0",
        "slug": "myskillbox-lehrpersonen",
        "product_type": "eLehrmittel",
        "product_form": "",
        "cover": "https:\/\/hep-verlag.fra1.digitaloceanspaces.com\/staging\/products\/2921\/978-3-0355-1861-0.jpg",
        "price": 100,
        "price_total": 100,
        "amount": 1,
        "authors": []
    }
}

REDEEM_OTHER_LICENSE_RESPONSE = {
    "data": {
        "id": 3433,
        "uri": "\/products\/someothe",
        "url": None,
        "title": "Ein e-Lehrmittel",
        "subtitle": "Lizenz gültig für 1 Jahr",
        "isbn": "111-2-3333-4444-0",
        "slug": "some-other",
        "product_type": "eLehrmittel",
        "product_form": "",
        "cover": "https:\/\/hep-verlag.fra1.digitaloceanspaces.com\/staging\/products\/2921\/978-3-0355-123.jpg",
        "price": 100,
        "price_total": 100,
        "amount": 1,
        "authors": []
    }
}

INVALID_LICENSE = {
    "message": "The given data was invalid.",
    "errors": {
        "code": [
            "The coupons was already redeemed."
        ]
    }
}


class CouponTests(TestCase):
    def setUp(self):
        self.user = UserFactory(username='aschi@iterativ.ch', email='aschi@iterativ.ch', hep_id=3)
        Role.objects.create_default_roles()
        self.teacher_role = Role.objects.get_default_teacher_role()
        Oauth2TokenFactory(user=self.user)

        # adding session
        request = RequestFactory().post('/')
        middleware = SessionMiddleware()
        middleware.process_request(request)
        request.user = self.user
        request.session.save()
        self.client = Client(schema=schema, context_value=request)

    def make_coupon_mutation(self, coupon_code, client):
        mutation = '''
            mutation Coupon($input: CouponInput!){
              coupon(input: $input) {
                success
              }
            }
        '''

        return client.execute(mutation, variables={
            'input': {
                'couponCode': coupon_code
            }
        })

    @patch.object(requests, 'post', return_value=MockResponse(200, data=REDEEM_MYSKILLBOX_SUCCESS_RESPONSE))
    def test_user_has_valid_skillbox_coupon(self, response_mock):
        result = self.make_coupon_mutation('COUPON--1234', self.client)

        user_role = self.user.user_roles.get(user=self.user)
        self.assertEqual(user_role.role.key, Role.objects.TEACHER_KEY)
        license = License.objects.get(licensee=self.user)
        self.assertIsNotNone(license)

        school_class = SchoolClass.objects.get(users__in=[self.user])
        self.assertIsNotNone(school_class)

        self.assertTrue(result.get('data').get('coupon').get('success'))
        self.assertTrue(self.user.is_authenticated)

    @patch.object(requests, 'post', return_value=MockResponse(200, data=REDEEM_OTHER_LICENSE_RESPONSE))
    def test_user_has_valid_non_skillbox_coupon(self, response_mock):
        result = self.make_coupon_mutation('COUPON--1234', self.client)

        try:
            self.user.user_roles.get(user=self.user)
            self.fail("CouponTests.test_user_has_valid_non_skillbox_coupon: Should not have created user role")
        except:
            pass

        try:
            License.objects.get(licensee=self.user)
            self.fail("CouponTests.test_user_has_valid_non_skillbox_coupon: License should not exist")
        except License.DoesNotExist:
            pass

        self.assertEqual(result.get('errors')[0].get('message'), 'non_myskillbox_product')
        self.assertTrue(self.user.is_authenticated)

    @patch.object(requests, 'post', return_value=MockResponse(404, data=INVALID_LICENSE))
    def test_user_has_invalid_coupon(self, response_mock):
        result = self.make_coupon_mutation('COUPON--1234', self.client)

        self.assertEqual(result.get('errors')[0].get('message'), 'invalid_coupon')

    @patch.object(requests, 'post', return_value=MockResponse(422, data=INVALID_LICENSE))
    def test_user_has_already_used_coupon(self, response_mock):
        result = self.make_coupon_mutation('COUPON--1234', self.client)

        self.assertEqual(result.get('errors')[0].get('message'), 'invalid_coupon')

    @patch.object(requests, 'put', return_value=MockResponse(200, data=['201', 'Invalid Coupon']))
    def test_unauthenticated_user_cannot_redeem(self, response_mock):
        request = RequestFactory().post('/')
        middleware = SessionMiddleware()
        middleware.process_request(request)
        request.session.save()
        client = Client(schema=schema, context_value=request)

        result = self.make_coupon_mutation('COUPON--1234', client)

        self.assertEqual(result.get('errors')[0].get('message'), 'not_authenticated')