import os
import json

from django.contrib.auth.models import User
from django.test import TestCase
from rest_framework.authtoken.models import Token

from api.models import App, Certificate


class CertificateTest(TestCase):

    """Tests creation of domain SSL certificates"""

    fixtures = ['tests.json']

    def setUp(self):
        self.user = User.objects.get(username='autotest')
        self.token = Token.objects.get(user=self.user).key
        self.user2 = User.objects.get(username='autotest2')
        self.token2 = Token.objects.get(user=self.user).key
        self.url = '/v2/certs'
        self.app = App.objects.create(owner=self.user, id='test-app')
        self.domain = 'autotest.example.com'

        path = os.path.dirname(os.path.realpath(__file__))
        with open('{}/certs/{}.key'.format(path, self.domain)) as f:
            self.key = f.read()

        with open('{}/certs/{}.cert'.format(path, self.domain)) as f:
            self.cert = f.read()

    def test_create_certificate_with_domain(self):
        """Tests creating a certificate."""
        response = self.client.post(
            self.url,
            json.dumps({
                'name': 'random-test-cert',
                'certificate': self.cert,
                'key': self.key
            }),
            content_type='application/json',
            HTTP_AUTHORIZATION='token {}'.format(self.token)
        )
        self.assertEqual(response.status_code, 201)

    def test_update_certificate(self):
        """Tests update of a certificate."""
        response = self.client.post(
            self.url,
            json.dumps({
                'name': 'random-test-cert',
                'certificate': self.cert,
                'key': self.key
            }),
            content_type='application/json',
            HTTP_AUTHORIZATION='token {}'.format(self.token)
        )
        self.assertEqual(response.status_code, 201)

    def test_create_certificate_with_different_common_name(self):
        """
        Make sure common_name is read-only
        """
        response = self.client.post(
            self.url,
            json.dumps({
                'name': 'random-test-cert',
                'certificate': self.cert,
                'key': self.key,
                'common_name': 'foo.example.com'
            }),
            content_type='application/json',
            HTTP_AUTHORIZATION='token {}'.format(self.token)
        )
        self.assertEqual(response.status_code, 201)
        self.assertEqual(response.data['common_name'], 'autotest.example.com')

    def test_get_certificate_screens_data(self):
        """
        When a user retrieves a certificate, only the common name and expiry date should be
        displayed.
        """
        response = self.client.post(
            self.url,
            json.dumps({
                'name': 'random-test-cert',
                'certificate': self.cert,
                'key': self.key
            }),
            content_type='application/json',
            HTTP_AUTHORIZATION='token {}'.format(self.token)
        )
        self.assertEqual(response.status_code, 201)

        response = self.client.get(
            '{}/{}'.format(self.url, 'random-test-cert'),
            HTTP_AUTHORIZATION='token {}'.format(self.token)
        )
        self.assertEqual(response.status_code, 200)

        expected = {
            'common_name': 'autotest.example.com',
            'expires': '2016-03-05T17:14:27UTC',
            'fingerprint': '37:24:D8:EB:DC:A4:2C:DA:88:55:C5:19:71:D3:9B:43:BA:AC:3A:CE:33:8E:07:52:1C:51:01:A0:97:43:C9:4D',  # noqa
            'san': [],
            'domains': [],
        }
        for key, value in list(expected.items()):
            self.assertEqual(response.data[key], value, key)

    def test_certficate_denied_requests(self):
        """Disallow put/patch requests"""
        response = self.client.put(self.url, HTTP_AUTHORIZATION='token {}'.format(self.token))
        self.assertEqual(response.status_code, 405)
        response = self.client.patch(self.url, HTTP_AUTHORIZATION='token {}'.format(self.token))
        self.assertEqual(response.status_code, 405)

    def test_delete_certificate(self):
        """Destroying a certificate should generate a 204 response"""
        Certificate.objects.create(
            name='random-test-cert',
            owner=self.user,
            common_name='autotest.example.com',
            certificate=self.cert
        )
        url = '/v2/certs/random-test-cert'
        response = self.client.delete(url, HTTP_AUTHORIZATION='token {}'.format(self.token))
        self.assertEqual(response.status_code, 204)