import time

from django.http import HttpResponse
from django.test import override_settings
from unittest.mock import Mock, patch
from zerver.lib.test_classes import ZulipTestCase
from zerver.middleware import is_slow_query
from zerver.middleware import write_log_line

class SlowQueryTest(ZulipTestCase):
    SLOW_QUERY_TIME = 10
    log_data = {'extra': '[transport=websocket]',
                'time_started': 0,
                'bugdown_requests_start': 0,
                'bugdown_time_start': 0,
                'remote_cache_time_start': 0,
                'remote_cache_requests_start': 0}

    def test_is_slow_query(self) -> None:
        self.assertFalse(is_slow_query(1.1, '/some/random/url'))
        self.assertTrue(is_slow_query(2, '/some/random/url'))
        self.assertTrue(is_slow_query(5.1, '/activity'))
        self.assertFalse(is_slow_query(2, '/activity'))
        self.assertFalse(is_slow_query(2, '/json/report/error'))
        self.assertFalse(is_slow_query(2, '/api/v1/deployments/report_error'))
        self.assertFalse(is_slow_query(2, '/realm_activity/whatever'))
        self.assertFalse(is_slow_query(2, '/user_activity/whatever'))
        self.assertFalse(is_slow_query(9, '/accounts/webathena_kerberos_login/'))
        self.assertTrue(is_slow_query(11, '/accounts/webathena_kerberos_login/'))

    @override_settings(SLOW_QUERY_LOGS_STREAM="logs")
    @patch('logging.info')
    def test_slow_query_log(self, mock_logging_info: Mock) -> None:
        self.log_data['time_started'] = time.time() - self.SLOW_QUERY_TIME
        write_log_line(self.log_data, path='/socket/open', method='SOCKET',
                       remote_ip='123.456.789.012', email='unknown', client_name='?')
        last_message = self.get_last_message()
        self.assertEqual(last_message.sender.email, "error-bot@zulip.com")
        self.assertIn("logs", str(last_message.recipient))
        self.assertEqual(last_message.topic_name(), "testserver: slow queries")
        self.assertRegexpMatches(last_message.content,
                                 r"123\.456\.789\.012 SOCKET  200 10\.\ds .*")

    @override_settings(ERROR_BOT=None)
    @patch('logging.info')
    @patch('zerver.lib.actions.internal_send_message')
    def test_slow_query_log_without_error_bot(self, mock_internal_send_message: Mock,
                                              mock_logging_info: Mock) -> None:
        self.log_data['time_started'] = time.time() - self.SLOW_QUERY_TIME
        write_log_line(self.log_data, path='/socket/open', method='SOCKET',
                       remote_ip='123.456.789.012', email='unknown', client_name='?')
        mock_internal_send_message.assert_not_called()

class OpenGraphTest(ZulipTestCase):
    def check_title_and_description(self, path: str, title: str, description: str) -> None:
        response = self.client_get(path)
        self.assert_in_success_response([
            # Open graph
            '<meta property="og:title" content="{}">'.format(title),
            '<meta property="og:description" content="{}">'.format(description),
            # Twitter
            '<meta property="twitter:title" content="{}">'.format(title),
            '<meta name="twitter:description" content="{}">'.format(description),
        ], response)

    def test_admonition_and_link(self) -> None:
        # disable-message-edit-history starts with an {!admin-only.md!}, and has a link
        # in the first paragraph.
        self.check_title_and_description(
            '/help/disable-message-edit-history',
            "Disable message edit history (Zulip Help Center)",
            "By default, Zulip displays messages that have been edited with an EDITED tag, " +
            "and users can view the edit history of a message.")

    def test_settings_tab(self) -> None:
        # deactivate-your-account starts with {settings_tab|your-account}
        self.check_title_and_description(
            '/help/deactivate-your-account',
            "Deactivate your account (Zulip Help Center)",
            # Ideally, we'd grab the second and third paragraphs as well, if
            # the first paragraph is this short
            "Go to Your account.")

    def test_tabs(self) -> None:
        # logging-out starts with {start_tabs}
        self.check_title_and_description(
            '/help/logging-out',
            "Logging out (Zulip Help Center)",
            # Ideally we'd do something better here
            "")

    def test_index_pages(self) -> None:
        self.check_title_and_description(
            '/help/',
            "Zulip Help Center",
            ("Zulip is a group chat app. Its most distinctive characteristic is that "
             "conversation within an organization is divided into “streams” and further "
             "subdivided into “topics”, so that much finer-grained conversations are possible "
             "than with IRC or other chat tools."))

        self.check_title_and_description(
            '/api/',
            "Zulip API Documentation",
            ("Zulip's APIs allow you to integrate other services with Zulip.  This "
             "guide should help you find the API you need:"))

    def test_nonexistent_page(self) -> None:
        response = self.client_get('/help/not-a-real-page')
        # Test that our open graph logic doesn't throw a 500
        self.assertEqual(response.status_code, 404)
        self.assert_in_response(
            # Probably we should make this "Zulip Help Center"
            '<meta property="og:title" content="No such article. (Zulip Help Center)">', response)
        self.assert_in_response('<meta property="og:description" content="No such article.">', response)