from django.core.paginator import Paginator
from django.test import TestCase

from boards import settings
from boards.models import Tag, Post, Thread


class PostTests(TestCase):

    def _create_post(self):
        tag, created = Tag.objects.get_or_create(name='test_tag')
        return Post.objects.create_post(title='title', text='text',
                                        tags=[tag])

    def test_post_add(self):
        """Test adding post"""

        post = self._create_post()

        self.assertIsNotNone(post, 'No post was created.')
        self.assertEqual('test_tag', post.get_thread().tags.all()[0].name,
                         'No tags were added to the post.')

    def test_delete_post(self):
        """Test post deletion"""

        post = self._create_post()
        post_id = post.id

        post.delete()

        self.assertFalse(Post.objects.filter(id=post_id).exists())

    def test_delete_thread(self):
        """Test thread deletion"""

        opening_post = self._create_post()
        thread = opening_post.get_thread()
        reply = Post.objects.create_post("", "", thread=thread)

        thread.delete()

        self.assertFalse(Post.objects.filter(id=reply.id).exists(),
                         'Reply was not deleted with the thread.')
        self.assertFalse(Post.objects.filter(id=opening_post.id).exists(),
                         'Opening post was not deleted with the thread.')

    def test_post_to_thread(self):
        """Test adding post to a thread"""

        op = self._create_post()
        post = Post.objects.create_post("", "", thread=op.get_thread())

        self.assertIsNotNone(post, 'Reply to thread wasn\'t created')
        self.assertEqual(op.get_thread().last_edit_time, post.pub_time,
                         'Post\'s create time doesn\'t match thread last edit'
                         ' time')

    def test_delete_posts_by_ip(self):
        """Test deleting posts with the given ip"""

        post = self._create_post()
        post_id = post.id

        Post.objects.delete_posts_by_ip('0.0.0.0')

        self.assertFalse(Post.objects.filter(id=post_id).exists())

    def test_get_thread(self):
        """Test getting all posts of a thread"""

        opening_post = self._create_post()

        for i in range(2):
            Post.objects.create_post('title', 'text',
                                     thread=opening_post.get_thread())

        thread = opening_post.get_thread()

        self.assertEqual(3, thread.get_replies().count())

    def test_create_post_with_tag(self):
        """Test adding tag to post"""

        tag = Tag.objects.create(name='test_tag')
        post = Post.objects.create_post(title='title', text='text', tags=[tag])

        thread = post.get_thread()
        self.assertIsNotNone(post, 'Post not created')
        self.assertTrue(tag in thread.tags.all(), 'Tag not added to thread')

    def test_thread_max_count(self):
        """Test deletion of old posts when the max thread count is reached"""

        for i in range(settings.get_int('Messages', 'MaxThreadCount') + 1):
            self._create_post()

        self.assertEqual(settings.get_int('Messages', 'MaxThreadCount'),
                         len(Thread.objects.filter(archived=False)))

    def test_pages(self):
        """Test that the thread list is properly split into pages"""

        for i in range(settings.get_int('Messages', 'MaxThreadCount')):
            self._create_post()

        all_threads = Thread.objects.filter(archived=False)

        paginator = Paginator(Thread.objects.filter(archived=False),
                              settings.get_int('View', 'ThreadsPerPage'))
        posts_in_second_page = paginator.page(2).object_list
        first_post = posts_in_second_page[0]

        self.assertEqual(all_threads[settings.get_int('View', 'ThreadsPerPage')].id,
                         first_post.id)

    def test_thread_replies(self):
        """
        Tests that the replies can be queried from a thread in all possible
        ways.
        """

        tag = Tag.objects.create(name='test_tag')
        opening_post = Post.objects.create_post(title='title', text='text',
                                        tags=[tag])
        thread = opening_post.get_thread()

        Post.objects.create_post(title='title', text='text', thread=thread)
        Post.objects.create_post(title='title', text='text', thread=thread)

        replies = thread.get_replies()
        self.assertTrue(len(replies) > 0, 'No replies found for thread.')

        replies = thread.get_replies(view_fields_only=True)
        self.assertTrue(len(replies) > 0,
                'No replies found for thread with view fields only.')

    def test_bumplimit(self):
        """
        Tests that the thread bumpable status is changed and post uids and
        last update times are updated across all post threads.
        """

        op1 = Post.objects.create_post(title='title', text='text')
        op2 = Post.objects.create_post(title='title', text='text')

        thread1 = op1.get_thread()
        thread1.max_posts = 5
        thread1.save()

        uid_1 = op1.uid
        uid_2 = op2.uid

        # Create multi reply
        Post.objects.create_post(
            title='title', text='text', thread=thread1,
            opening_posts=[op1, op2])
        thread_update_time_2 = op2.get_thread().last_edit_time
        for i in range(6):
            Post.objects.create_post(title='title', text='text',
                                     thread=thread1)

        self.assertFalse(op1.get_thread().can_bump(),
                         'Thread is bumpable when it should not be.')
        self.assertTrue(op2.get_thread().can_bump(),
                        'Thread is not bumpable when it should be.')
        self.assertNotEqual(
            uid_1, Post.objects.get(id=op1.id).uid,
            'UID of the first OP should be changed but it is not.')
        self.assertEqual(
            uid_2, Post.objects.get(id=op2.id).uid,
            'UID of the first OP should not be changed but it is.')

        self.assertNotEqual(
            thread_update_time_2,
            Thread.objects.get(id=op2.get_thread().id).last_edit_time,
            'Thread last update time should change when the other thread '
            'changes status.')