from django.urls import reverse

from misago.threads import testutils

from .test_threads_api import ThreadsApiTestCase


class ThreadPostEditsApiTestCase(ThreadsApiTestCase):
    def setUp(self):
        super().setUp()

        self.post = testutils.reply_thread(self.thread, poster=self.user)

        self.api_link = reverse(
            'misago:api:thread-post-edits',
            kwargs={
                'thread_pk': self.thread.pk,
                'pk': self.post.pk,
            }
        )

        self.override_acl()

    def mock_edit_record(self):
        edits_record = [
            self.post.edits_record.create(
                category=self.category,
                thread=self.thread,
                editor=self.user,
                editor_name=self.user.username,
                editor_slug=self.user.slug,
                edited_from="Original body",
                edited_to="First Edit",
            ),
            self.post.edits_record.create(
                category=self.category,
                thread=self.thread,
                editor_name='Deleted',
                editor_slug='deleted',
                edited_from="First Edit",
                edited_to="Second Edit",
            ),
            self.post.edits_record.create(
                category=self.category,
                thread=self.thread,
                editor=self.user,
                editor_name=self.user.username,
                editor_slug=self.user.slug,
                edited_from="Second Edit",
                edited_to="Last Edit",
            ),
        ]

        self.post.original = 'Last Edit'
        self.post.parsed = '<p>Last Edit</p>'
        self.post.save()

        return edits_record


class ThreadPostGetEditTests(ThreadPostEditsApiTestCase):
    def test_no_edits(self):
        """api returns 403 if post has no edits record"""
        response = self.client.get(self.api_link)
        self.assertEqual(response.status_code, 403)
        self.assertEqual(response.json(), {
            "detail": "Edits record is unavailable for this post."
        })

        self.logout_user()

        response = self.client.get(self.api_link)
        self.assertEqual(response.status_code, 403)
        self.assertEqual(response.json(), {
            "detail": "Edits record is unavailable for this post."
        })

    def test_empty_edit_id(self):
        """api handles empty edit in querystring"""
        response = self.client.get('{}?edit='.format(self.api_link))
        self.assertEqual(response.status_code, 404)

    def test_invalid_edit_id(self):
        """api handles invalid edit in querystring"""
        response = self.client.get('{}?edit=dsa67d8sa68'.format(self.api_link))
        self.assertEqual(response.status_code, 404)

    def test_nonexistant_edit_id(self):
        """api handles nonexistant edit in querystring"""
        response = self.client.get('{}?edit=1321'.format(self.api_link))
        self.assertEqual(response.status_code, 404)

    def test_get_last_edit(self):
        """api returns last edit record"""
        edits = self.mock_edit_record()

        response = self.client.get(self.api_link)
        self.assertEqual(response.status_code, 200)

        response_json = response.json()

        self.assertEqual(response_json['id'], edits[-1].id)
        self.assertIsNone(response_json['next'])
        self.assertEqual(response_json['previous'], edits[1].id)

    def test_get_middle_edit(self):
        """api returns middle edit record"""
        edits = self.mock_edit_record()

        response = self.client.get('{}?edit={}'.format(self.api_link, edits[1].id))
        self.assertEqual(response.status_code, 200)

        response_json = response.json()

        self.assertEqual(response_json['id'], edits[1].id)
        self.assertEqual(response_json['next'], edits[-1].id)
        self.assertEqual(response_json['previous'], edits[0].id)

    def test_get_first_edit(self):
        """api returns middle edit record"""
        edits = self.mock_edit_record()

        response = self.client.get('{}?edit={}'.format(self.api_link, edits[0].id))
        self.assertEqual(response.status_code, 200)

        response_json = response.json()

        self.assertEqual(response_json['id'], edits[0].id)
        self.assertEqual(response_json['next'], edits[1].id)
        self.assertIsNone(response_json['previous'])


class ThreadPostPostEditTests(ThreadPostEditsApiTestCase):
    def setUp(self):
        super().setUp()
        self.edits = self.mock_edit_record()

        self.override_acl({'can_edit_posts': 2})

    def test_empty_edit_id(self):
        """api handles empty edit in querystring"""
        response = self.client.post('{}?edit='.format(self.api_link))
        self.assertEqual(response.status_code, 404)

    def test_invalid_edit_id(self):
        """api handles invalid edit in querystring"""
        response = self.client.post('{}?edit=dsa67d8sa68'.format(self.api_link))
        self.assertEqual(response.status_code, 404)

    def test_nonexistant_edit_id(self):
        """api handles nonexistant edit in querystring"""
        response = self.client.post('{}?edit=1321'.format(self.api_link))
        self.assertEqual(response.status_code, 404)

    def test_anonymous(self):
        """only signed in users can rever ports"""
        self.logout_user()

        response = self.client.post('{}?edit={}'.format(self.api_link, self.edits[0].id))
        self.assertEqual(response.status_code, 403)

    def test_no_permission(self):
        """api validates permission to revert post"""
        self.override_acl({'can_edit_posts': 0})

        response = self.client.post('{}?edit=1321'.format(self.api_link))
        self.assertEqual(response.status_code, 403)

    def test_revert_post(self):
        """api reverts post to version from before specified edit"""
        response = self.client.post('{}?edit={}'.format(self.api_link, self.edits[0].id))
        self.assertEqual(response.status_code, 200)

        response_json = response.json()
        self.assertEqual(response_json['edits'], 1)
        self.assertEqual(response_json['content'], "<p>Original body</p>")

        self.assertEqual(self.post.edits_record.count(), 4)

        edit = self.post.edits_record.first()
        self.assertEqual(edit.edited_from, self.post.original)
        self.assertEqual(edit.edited_to, "Original body")