import simplejson

from django.test import TestCase

from boards.models import Tag, Post
from boards.tests.mocks import MockRequest
from boards.utils import datetime_to_epoch
from boards.views.api import api_get_threaddiff


class ApiTest(TestCase):
    def test_thread_diff(self):
        tag = Tag.objects.create(name='test_tag')
        opening_post = Post.objects.create_post(title='title', text='text',
                                                tags=[tag])

        last_edit_time = datetime_to_epoch(opening_post.last_edit_time)

        # Check the exact timestamp post was added
        empty_response = api_get_threaddiff(MockRequest(),
                                            str(opening_post.thread_new.id),
                                            str(last_edit_time))
        diff = simplejson.loads(empty_response.content)
        self.assertEqual(0, len(diff['added']),
                         'There must be no added posts in the diff.')
        self.assertEqual(0, len(diff['updated']),
                         'There must be no updated posts in the diff.')

        reply = Post.objects.create_post(title='',
                                         text='[post]%d[/post]\ntext' % opening_post.id,
                                         thread=opening_post.thread_new)

        # Check the timestamp before post was added
        response = api_get_threaddiff(MockRequest(),
                                      str(opening_post.thread_new.id),
                                      str(last_edit_time))
        diff = simplejson.loads(response.content)
        self.assertEqual(1, len(diff['added']),
                         'There must be 1 added posts in the diff.')
        self.assertEqual(1, len(diff['updated']),
                         'There must be 1 updated posts in the diff.')

        empty_response = api_get_threaddiff(MockRequest(),
                                            str(opening_post.thread_new.id),
                                            str(datetime_to_epoch(reply.last_edit_time)))
        diff = simplejson.loads(empty_response.content)
        self.assertEqual(0, len(diff['added']),
                         'There must be no added posts in the diff.')
        self.assertEqual(0, len(diff['updated']),
                         'There must be no updated posts in the diff.')