import json

from django.contrib.auth import get_user_model

from django.core.urlresolvers import reverse

from renkanmanager.models import Renkan, Revision

from rest_framework import status

from rest_framework.test import APITestCase

User = get_user_model()

class RevisionTests(APITestCase):

    def setUp(self):

        User.objects.create_superuser("blop", "blop@blop.com", "blop")

        self.user = User.objects.get_by_natural_key(username="blop")

        _ = self.client.login(username="blop", password="blop")

        User.objects.create_user("blip", "blip@blip.com", "blip")

        self.unauthorized_user = User.objects.get_by_natural_key(username="blip")

        ###################################################

        # POSTing new Renkan

        ###################################################

        post_url = reverse("v1.0:renkan_list")

        self.test_title = "test_title_1"

        self.test_content = json.dumps({

            "id": "",

            "title": "test_title_1",

            "description": "test_description_1",

            "created": "",

            "updated": "",

            "edges": [],

            "nodes": [],

            "users": [],

            "space_id": "",

            "views": []

        })

        self.test_data = {"title": self.test_title, "content": self.test_content}

        post_response = self.client.post(post_url, self.test_data, format="json")

        post_response_dict = json.loads(post_response.content.decode())

        self.test_renkan_guid = post_response_dict.get("id", "")

        self.test_initial_revision_guid = post_response_dict.get("current_revision_id", "")

    def test_get_revision(self):

        ###################################################

        # GETting revision

        ###################################################

        get_url = reverse("v1.0:revision_detail", kwargs={"renkan_guid" : self.test_renkan_guid, "revision_guid": self.test_initial_revision_guid})

        get_response = self.client.get(get_url, {}, format="json")

        self.assertEqual(get_response.status_code, status.HTTP_200_OK)

        # Checking data

        get_response_dict = json.loads(get_response.content.decode()) 

        self.assertEqual(get_response_dict.get("id", ""), self.test_initial_revision_guid)

        self.assertEqual(get_response_dict.get("parent_renkan_id", ""), self.test_renkan_guid)

        self.assertEqual(get_response_dict.get("revision_created_by", ""), getattr(self.user, User.USERNAME_FIELD))

        self.assertEqual(get_response_dict.get("revision_last_updated_by", ""), getattr(self.user, User.USERNAME_FIELD))

        self.assertEqual(get_response_dict.get("title", ""), self.test_data.get("title", ""))

        self.assertEqual(get_response_dict.get("content", ""), self.test_data.get("content", ""))

        ###################################################

        # GETting with wrong renkan guid

        ###################################################

        get_url = reverse("v1.0:revision_detail", kwargs={"renkan_guid" : "bad-renkan-guid", "revision_guid": self.test_initial_revision_guid})

        get_response = self.client.get(get_url, {}, format="json")

        self.assertEqual(get_response.status_code, status.HTTP_404_NOT_FOUND)

        ###################################################

        # GETting with wrong revision guid

        ###################################################

        get_url = reverse("v1.0:revision_detail", kwargs={"renkan_guid" : self.test_renkan_guid, "revision_guid": "bad-revision-guid"})

        get_response = self.client.get(get_url, {}, format="json")

        self.assertEqual(get_response.status_code, status.HTTP_404_NOT_FOUND)

        ###################################################

        # try GETting with unauthorized user 

        ###################################################

        _ = self.client.login(username="blip", password="blip")

        get_url = reverse("v1.0:revision_detail", kwargs={"renkan_guid" : self.test_renkan_guid, "revision_guid": self.test_initial_revision_guid})

        get_response = self.client.get(get_url, {}, format="json")

        self.assertEqual(get_response.status_code, status.HTTP_403_FORBIDDEN)

    def test_get_revision_list(self):

        ###################################################

        # PUTting another revision in test renkan

        ###################################################

        put_url = reverse("v1.0:renkan_detail", kwargs={"renkan_guid" : self.test_renkan_guid})

        put_title = "edited_title"

        put_data = {

            "title" : put_title,

            "create_new_revision": True

        }

        put_response = self.client.put(put_url, put_data, format="json")

        ###################################################

        # GETting revision lists

        ###################################################

        get_url = reverse("v1.0:revision_list", kwargs={"renkan_guid" : self.test_renkan_guid})

        get_response = self.client.get(get_url, {}, format="json")

        self.assertEqual(get_response.status_code, status.HTTP_200_OK)

        # Checking data

        get_response_content = json.loads(get_response.content.decode()) # Should be a list

        self.assertTrue(isinstance(get_response_content, list))

        self.assertEqual(len(get_response_content), 2)

        ###################################################

        # GETting with wrong renkan guid

        ###################################################

        _ = self.client.login(username="blip", password="blip")

        get_url = reverse("v1.0:revision_detail", kwargs={"renkan_guid" : self.test_renkan_guid, "revision_guid": self.test_initial_revision_guid})

        get_response = self.client.get(get_url, {}, format="json")

        self.assertEqual(get_response.status_code, status.HTTP_403_FORBIDDEN)

    def test_delete_revision(self):

        ###################################################

        # Try to DELETE the initial revision (last revision, should 400)

        ###################################################

        delete_url = reverse("v1.0:revision_detail", kwargs={"renkan_guid" : self.test_renkan_guid, "revision_guid": self.test_initial_revision_guid})

        delete_response = self.client.delete(delete_url, {}, format="json")

        self.assertEqual(delete_response.status_code, status.HTTP_400_BAD_REQUEST)

        ###################################################

        # PUTting another revision in test renkan

        ###################################################

        put_url = reverse("v1.0:renkan_detail", kwargs={"renkan_guid" : self.test_renkan_guid})

        put_title = "edited_title"

        put_data = {

            "title" : put_title,

            "create_new_revision": True

        }

        put_response = self.client.put(put_url, put_data, format="json")

        put_response_dict = json.loads(put_response.content.decode())

        added_revision_guid = put_response_dict.get("current_revision_id", "")

        ###################################################

        # Try to DELETE the added revision (current revision, should 400)

        ###################################################

        delete_url = reverse("v1.0:revision_detail", kwargs={"renkan_guid" : self.test_renkan_guid, "revision_guid": added_revision_guid})

        delete_response = self.client.delete(delete_url, {}, format="json")

        self.assertEqual(delete_response.status_code, status.HTTP_400_BAD_REQUEST)

        ###################################################

        # try to DELETE with unauthorized user 

        ###################################################

        _ = self.client.login(username="blip", password="blip")

        delete_url = reverse("v1.0:revision_detail", kwargs={"renkan_guid" : self.test_renkan_guid, "revision_guid": self.test_initial_revision_guid})

        delete_response = self.client.delete(delete_url, {}, format="json")

        self.assertEqual(delete_response.status_code, status.HTTP_403_FORBIDDEN)

        # Restoring rightful user

        _ = self.client.login(username="blop", password="blop")

        ###################################################

        # Try to DELETE the initial revision (should 204 now that we added a revision)

        ###################################################

        delete_url = reverse("v1.0:revision_detail", kwargs={"renkan_guid" : self.test_renkan_guid, "revision_guid": self.test_initial_revision_guid})

        delete_response = self.client.delete(delete_url, {}, format="json")

        self.assertEqual(delete_response.status_code, status.HTTP_204_NO_CONTENT)

        ###################################################

        # Try to DELETE with wrong renkan guid

        ###################################################

        delete_url = reverse("v1.0:revision_detail", kwargs={"renkan_guid" : "bad-renkan-guid", "revision_guid": self.test_initial_revision_guid})

        delete_response = self.client.delete(delete_url, {}, format="json")

        self.assertEqual(delete_response.status_code, status.HTTP_404_NOT_FOUND)

        ###################################################

        # Try to DELETE with wrong revision guid

        ###################################################

        delete_url = reverse("v1.0:revision_detail", kwargs={"renkan_guid" : self.test_renkan_guid, "revision_guid": "bad-revision-guid"})

        delete_response = self.client.delete(delete_url, {}, format="json")

        self.assertEqual(delete_response.status_code, status.HTTP_404_NOT_FOUND)