from django.test import TestCase,Client,override_settings
import responses
from LandingPage.models import ExternalUser
from urllib import parse
from django.contrib.auth import get_user_model

@override_settings(
        AUTH_TOKEN_ENDPOINT='http://icynet.test/api/',
        AUTH_CLIENT_ID='clid',
        AUTH_B64='Y2xpZDpjbGlzZWM=',
        AUTH_REDIRECT_URL='http://redirect.test'
)
class TestLogin(TestCase):
   
    def test_login_new_user(self):
        # Set up responses to control network flow
        with responses.RequestsMock() as rm:
            rm.add(responses.POST,'http://icynet.test/api/token',json={'access_token':'1accesstoken1'})
            rm.add(responses.GET,'http://icynet.test/api/user',json={'uuid':'935a41b5-b38d-42c3-96ef-653402fc44ca','email':'johnsmith@gmail.com','display_name':'Mr. Smith','username':'mrsmith'})

            # Make initial request to redirect endpoint
            client = Client()
            resp = client.get('/login')
            self.assertEqual(resp.status_code, 302)
            query = parse.parse_qs(parse.urlparse(resp['Location']).query)
            state = query['state'][0]
            self.assertEqual(query['client_id'][0],'clid')
            self.assertEqual(query['response_type'][0],'code')
            self.assertEqual(query['redirect_uri'][0],'http://redirect.test')
            self.assertSetEqual(set(query['scope'][0].split()),set(['email','privilege']))

            # Make connection to the real endpoint
            resp = client.get('/login/redirect?state=%s&code=%s'%(state, 'code'))
            self.assertEqual(resp.status_code, 302)

            # Check that the database is all good
            users = ExternalUser.objects.all()
            self.assertEqual(len(users), 1)
            user = users[0]
            self.assertEqual(user.icy_id,'935a41b5-b38d-42c3-96ef-653402fc44ca')
            self.assertEqual(user.user.email,'johnsmith@gmail.com')
            self.assertEqual(user.user.username,'mrsmith')
            self.assertEqual(user.display_name, 'Mr. Smith')
            
            # Check that the user has been logged in
            self.assertEqual(client.get('/').context['user'], user.user)

    def test_reject_bad_state(self):
        with responses.RequestsMock() as rm:
            client = Client()
            resp = client.get('/login/redirect?state=%s&code=%s'%('bad_state', 'code'))
            self.assertEqual(resp.status_code, 400)

    def test_login_old_user(self):
        # Set up responses to control network flow
        with responses.RequestsMock() as rm:
            rm.add(responses.POST,'http://icynet.test/api/token',json={'access_token':'1accesstoken1'})
            rm.add(responses.GET,'http://icynet.test/api/user',json={'uuid':'935a41b5-b38d-42c3-96ef-653402fc44ca','email':'johnsmith@gmail.com','display_name':'Mr. Smith'})

            # Set up the database
            user = ExternalUser(user=get_user_model().objects.create_user(username='mrsmith',email='johnsmith@gmail.com'),icy_id='935a41b5-b38d-42c3-96ef-653402fc44ca',display_name='Mr. Smith')
            user.save()

            # Make initial request to redirect endpoint
            client = Client()
            resp = client.get('/login')
            state = parse.parse_qs(parse.urlparse(resp['Location']).query)['state'][0]

            # Make connection to the real endpoint
            resp = client.get('/login/redirect?state=%s&code=%s'%(state, 'code'))
            self.assertEqual(resp.status_code, 302)

            # Check that the database is all good
            users = ExternalUser.objects.all()
            self.assertEqual(len(users), 1)
            user = users[0]
            self.assertEqual(user.icy_id,'935a41b5-b38d-42c3-96ef-653402fc44ca')
            self.assertEqual(user.user.email,'johnsmith@gmail.com')
            self.assertEqual(user.display_name, 'Mr. Smith')
            
            # Check that the user has been logged in
            self.assertEqual(client.get('/').context['user'], user.user)

    def test_states_unique(self):
        with responses.RequestsMock() as rm:
            client1 = Client()
            resp1 = client1.get('/login')
            state1 = parse.parse_qs(parse.urlparse(resp1['Location']).query)['state'][0]

            client2 = Client()
            resp2 = client2.get('/login')
            state2 = parse.parse_qs(parse.urlparse(resp2['Location']).query)['state'][0]

            self.assertNotEqual(state1,state2)