import os
from typing import Any
from unittest import mock

import ujson

from zerver.data_import.gitter import do_convert_data, get_usermentions
from zerver.lib.import_realm import do_import_realm
from zerver.lib.test_classes import ZulipTestCase
from zerver.models import Message, UserProfile, get_realm


class GitterImporter(ZulipTestCase):

    @mock.patch('zerver.data_import.gitter.process_avatars', return_value=[])
    def test_gitter_import_data_conversion(self, mock_process_avatars: mock.Mock) -> None:
        output_dir = self.make_import_output_dir("gitter")
        gitter_file = os.path.join(os.path.dirname(__file__), 'fixtures/gitter_data.json')
        with self.assertLogs(level='INFO'):
            do_convert_data(gitter_file, output_dir)

        def read_file(output_file: str) -> Any:
            full_path = os.path.join(output_dir, output_file)
            with open(full_path) as f:
                return ujson.load(f)

        self.assertEqual(os.path.exists(os.path.join(output_dir, 'avatars')), True)
        self.assertEqual(os.path.exists(os.path.join(output_dir, 'emoji')), True)
        self.assertEqual(os.path.exists(os.path.join(output_dir, 'attachment.json')), True)

        realm = read_file('realm.json')

        # test realm
        self.assertEqual('Organization imported from Gitter!',
                         realm['zerver_realm'][0]['description'])

        # test users
        exported_user_ids = self.get_set(realm['zerver_userprofile'], 'id')
        exported_user_full_name = self.get_set(realm['zerver_userprofile'], 'full_name')
        self.assertIn('User Full Name', exported_user_full_name)
        exported_user_email = self.get_set(realm['zerver_userprofile'], 'email')
        self.assertIn('username2@users.noreply.github.com', exported_user_email)

        # test stream
        self.assertEqual(len(realm['zerver_stream']), 1)
        self.assertEqual(realm['zerver_stream'][0]['name'], 'from gitter')
        self.assertEqual(realm['zerver_stream'][0]['deactivated'], False)
        self.assertEqual(realm['zerver_stream'][0]['realm'], realm['zerver_realm'][0]['id'])

        self.assertEqual(realm['zerver_defaultstream'][0]['stream'], realm['zerver_stream'][0]['id'])

        # test recipient
        exported_recipient_id = self.get_set(realm['zerver_recipient'], 'id')
        exported_recipient_type = self.get_set(realm['zerver_recipient'], 'type')
        self.assertEqual({1, 2}, exported_recipient_type)

        # test subscription
        exported_subscription_userprofile = self.get_set(realm['zerver_subscription'], 'user_profile')
        self.assertEqual({0, 1}, exported_subscription_userprofile)
        exported_subscription_recipient = self.get_set(realm['zerver_subscription'], 'recipient')
        self.assertEqual(len(exported_subscription_recipient), 3)
        self.assertIn(realm['zerver_subscription'][1]['recipient'], exported_recipient_id)

        messages = read_file('messages-000001.json')

        # test messages
        exported_messages_id = self.get_set(messages['zerver_message'], 'id')
        self.assertIn(messages['zerver_message'][0]['sender'], exported_user_ids)
        self.assertIn(messages['zerver_message'][1]['recipient'], exported_recipient_id)
        self.assertIn(messages['zerver_message'][0]['content'], 'test message')

        # test usermessages
        exported_usermessage_userprofile = self.get_set(messages['zerver_usermessage'], 'user_profile')
        self.assertEqual(exported_user_ids, exported_usermessage_userprofile)
        exported_usermessage_message = self.get_set(messages['zerver_usermessage'], 'message')
        self.assertEqual(exported_usermessage_message, exported_messages_id)

    @mock.patch('zerver.data_import.gitter.process_avatars', return_value=[])
    def test_gitter_import_to_existing_database(self, mock_process_avatars: mock.Mock) -> None:
        output_dir = self.make_import_output_dir("gitter")
        gitter_file = os.path.join(os.path.dirname(__file__), 'fixtures/gitter_data.json')
        with self.assertLogs(level="INFO"):
            do_convert_data(gitter_file, output_dir)

        with self.assertLogs(level="INFO"):
            do_import_realm(output_dir, 'test-gitter-import')

        realm = get_realm('test-gitter-import')

        # test rendered_messages
        realm_users = UserProfile.objects.filter(realm=realm)
        messages = Message.objects.filter(sender__in=realm_users)
        for message in messages:
            self.assertIsNotNone(message.rendered_content, None)

    def test_get_usermentions(self) -> None:
        user_map = {'57124a4': 3, '57124b4': 5, '57124c4': 8}
        user_short_name_to_full_name = {'user': 'user name', 'user2': 'user2',
                                        'user3': 'user name 3', 'user4': 'user 4'}
        messages = [{'text': 'hi @user',
                     'mentions': [{'screenName': 'user', 'userId': '57124a4'}]},
                    {'text': 'hi @user2 @user3',
                     'mentions': [{'screenName': 'user2', 'userId': '57124b4'},
                                  {'screenName': 'user3', 'userId': '57124c4'}]},
                    {'text': 'hi @user4',
                     'mentions': [{'screenName': 'user4'}]},
                    {'text': 'hi @user5',
                     'mentions': [{'screenName': 'user', 'userId': '5712ds4'}]}]

        self.assertEqual(get_usermentions(messages[0], user_map, user_short_name_to_full_name), [3])
        self.assertEqual(messages[0]['text'], 'hi @**user name**')
        self.assertEqual(get_usermentions(messages[1], user_map, user_short_name_to_full_name), [5, 8])
        self.assertEqual(messages[1]['text'], 'hi @**user2** @**user name 3**')
        self.assertEqual(get_usermentions(messages[2], user_map, user_short_name_to_full_name), [])
        self.assertEqual(messages[2]['text'], 'hi @user4')
        self.assertEqual(get_usermentions(messages[3], user_map, user_short_name_to_full_name), [])
        self.assertEqual(messages[3]['text'], 'hi @user5')