# -*- coding: utf-8 -*-
# Copyright 2019 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from twisted.internet import defer

from tests import unittest, utils

# sample room_key data for use in the tests
room_key = {
    "first_message_index": 1,
    "forwarded_count": 1,
    "is_verified": False,
    "session_data": "SSBBTSBBIEZJU0gK",
}


class E2eRoomKeysHandlerTestCase(unittest.TestCase):
    def __init__(self, *args, **kwargs):
        super(E2eRoomKeysHandlerTestCase, self).__init__(*args, **kwargs)
        self.hs = None  # type: synapse.server.HomeServer
        self.store = None  # type: synapse.storage.DataStore

    @defer.inlineCallbacks
    def setUp(self):
        hs = yield utils.setup_test_homeserver(self.addCleanup)

        self.store = hs.get_datastore()

    @defer.inlineCallbacks
    def test_room_keys_version_delete(self):
        # test that deleting a room key backup deletes the keys
        version1 = yield self.store.create_e2e_room_keys_version(
            "user_id", {"algorithm": "rot13", "auth_data": {}}
        )

        yield self.store.set_e2e_room_key(
            "user_id", version1, "room", "session", room_key
        )

        version2 = yield self.store.create_e2e_room_keys_version(
            "user_id", {"algorithm": "rot13", "auth_data": {}}
        )

        yield self.store.set_e2e_room_key(
            "user_id", version2, "room", "session", room_key
        )

        # make sure the keys were stored properly
        keys = yield self.store.get_e2e_room_keys("user_id", version1)
        self.assertEqual(len(keys["rooms"]), 1)

        keys = yield self.store.get_e2e_room_keys("user_id", version2)
        self.assertEqual(len(keys["rooms"]), 1)

        # delete version1
        yield self.store.delete_e2e_room_keys_version("user_id", version1)

        # make sure the key from version1 is gone, and the key from version2 is
        # still there
        keys = yield self.store.get_e2e_room_keys("user_id", version1)
        self.assertEqual(len(keys["rooms"]), 0)

        keys = yield self.store.get_e2e_room_keys("user_id", version2)
        self.assertEqual(len(keys["rooms"]), 1)