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(username='blop')
        _ = self.client.login(username='blop', password='blop')
        User.objects.create_user('blip', 'blip@blip.com', 'blip')
        self.unauthorized_user = User.objects.get(username='blip')
        
        ###################################################
        # POSTing new Renkan
        ###################################################
        
        post_url = reverse('renkan_list')
        self.test_data = {'title': 'test_title', 'content': json.dumps({'mock_data': 'wow'})}
        post_response = self.client.post(post_url, self.test_data, format='json')
        post_response_dict = json.loads(post_response.content)
        self.test_renkan_guid = post_response_dict.get('renkan_guid', '')
        self.test_initial_revision_guid = post_response_dict.get('current_revision_guid', '')
    
    def test_get_revision(self):
        
        ###################################################
        # GETting revision
        ###################################################
        
        get_url = reverse('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) 
        self.assertEqual(get_response_dict.get('revision_guid', ''), self.test_initial_revision_guid)
        self.assertEqual(get_response_dict.get('parent_renkan_guid', ''), self.test_renkan_guid)
        self.assertEqual(get_response_dict.get('revision_created_by', ''), self.user.username)
        self.assertEqual(get_response_dict.get('revision_last_updated_by', ''), self.user.username)
        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('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('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('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('renkan_detail', kwargs={'renkan_guid' : self.test_renkan_guid})
        put_title = 'edited_title'
        put_content = json.dumps({"title": "edited_title", "nodes": 1})
        put_data = {
            'title' : put_title,
            'content' : put_content,
            'create_new_revision': True
        }
        put_response = self.client.put(put_url, put_data, format='json')
        
        ###################################################
        # GETting revision lists
        ###################################################
        
        get_url = reverse('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) # 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('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('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('renkan_detail', kwargs={'renkan_guid' : self.test_renkan_guid})
        put_title = 'edited_title'
        put_content = json.dumps({"title": "edited_title", "nodes": 1})
        put_data = {
            'title' : put_title,
            'content' : put_content,
            'create_new_revision': True
        }
        put_response = self.client.put(put_url, put_data, format='json')
        put_response_dict = json.loads(put_response.content)
        added_revision_guid = put_response_dict.get('current_revision_guid', '')
        
        ###################################################
        # Try to DELETE the added revision (current revision, should 400)
        ###################################################
        
        delete_url = reverse('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('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('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('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('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)