# Copyright 2015, 2016 OpenMarket Ltd
#
# 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.
import re
from typing import Any, Generator
from unittest.mock import Mock

from twisted.internet import defer

from synapse.appservice import ApplicationService, Namespace

from tests import unittest
from tests.test_utils import simple_async_mock


def _regex(regex: str, exclusive: bool = True) -> Namespace:
    return Namespace(exclusive, re.compile(regex))


class ApplicationServiceTestCase(unittest.TestCase):
    def setUp(self) -> None:
        self.service = ApplicationService(
            id="unique_identifier",
            sender="@as:test",
            url="some_url",
            token="some_token",
        )
        self.event = Mock(
            event_id="$abc:xyz",
            type="m.something",
            room_id="!foo:bar",
            sender="@someone:somewhere",
        )

        self.store = Mock()
        self.store.get_aliases_for_room = simple_async_mock([])
        self.store.get_local_users_in_room = simple_async_mock([])

    @defer.inlineCallbacks
    def test_regex_user_id_prefix_match(
        self,
    ) -> Generator["defer.Deferred[Any]", object, None]:
        self.service.namespaces[ApplicationService.NS_USERS].append(_regex("@irc_.*"))
        self.event.sender = "@irc_foobar:matrix.org"
        self.assertTrue(
            (
                yield self.service.is_interested_in_event(
                    self.event.event_id, self.event, self.store
                )
            )
        )

    @defer.inlineCallbacks
    def test_regex_user_id_prefix_no_match(
        self,
    ) -> Generator["defer.Deferred[Any]", object, None]:
        self.service.namespaces[ApplicationService.NS_USERS].append(_regex("@irc_.*"))
        self.event.sender = "@someone_else:matrix.org"
        self.assertFalse(
            (
                yield self.service.is_interested_in_event(
                    self.event.event_id, self.event, self.store
                )
            )
        )

    @defer.inlineCallbacks
    def test_regex_room_member_is_checked(
        self,
    ) -> Generator["defer.Deferred[Any]", object, None]:
        self.service.namespaces[ApplicationService.NS_USERS].append(_regex("@irc_.*"))
        self.event.sender = "@someone_else:matrix.org"
        self.event.type = "m.room.member"
        self.event.state_key = "@irc_foobar:matrix.org"
        self.assertTrue(
            (
                yield self.service.is_interested_in_event(
                    self.event.event_id, self.event, self.store
                )
            )
        )

    @defer.inlineCallbacks
    def test_regex_room_id_match(
        self,
    ) -> Generator["defer.Deferred[Any]", object, None]:
        self.service.namespaces[ApplicationService.NS_ROOMS].append(
            _regex("!some_prefix.*some_suffix:matrix.org")
        )
        self.event.room_id = "!some_prefixs0m3th1nGsome_suffix:matrix.org"
        self.assertTrue(
            (
                yield self.service.is_interested_in_event(
                    self.event.event_id, self.event, self.store
                )
            )
        )

    @defer.inlineCallbacks
    def test_regex_room_id_no_match(
        self,
    ) -> Generator["defer.Deferred[Any]", object, None]:
        self.service.namespaces[ApplicationService.NS_ROOMS].append(
            _regex("!some_prefix.*some_suffix:matrix.org")
        )
        self.event.room_id = "!XqBunHwQIXUiqCaoxq:matrix.org"
        self.assertFalse(
            (
                yield self.service.is_interested_in_event(
                    self.event.event_id, self.event, self.store
                )
            )
        )

    @defer.inlineCallbacks
    def test_regex_alias_match(self) -> Generator["defer.Deferred[Any]", object, None]:
        self.service.namespaces[ApplicationService.NS_ALIASES].append(
            _regex("#irc_.*:matrix.org")
        )
        self.store.get_aliases_for_room = simple_async_mock(
            ["#irc_foobar:matrix.org", "#athing:matrix.org"]
        )
        self.store.get_local_users_in_room = simple_async_mock([])
        self.assertTrue(
            (
                yield self.service.is_interested_in_event(
                    self.event.event_id, self.event, self.store
                )
            )
        )

    def test_non_exclusive_alias(self) -> None:
        self.service.namespaces[ApplicationService.NS_ALIASES].append(
            _regex("#irc_.*:matrix.org", exclusive=False)
        )
        self.assertFalse(self.service.is_exclusive_alias("#irc_foobar:matrix.org"))

    def test_non_exclusive_room(self) -> None:
        self.service.namespaces[ApplicationService.NS_ROOMS].append(
            _regex("!irc_.*:matrix.org", exclusive=False)
        )
        self.assertFalse(self.service.is_exclusive_room("!irc_foobar:matrix.org"))

    def test_non_exclusive_user(self) -> None:
        self.service.namespaces[ApplicationService.NS_USERS].append(
            _regex("@irc_.*:matrix.org", exclusive=False)
        )
        self.assertFalse(self.service.is_exclusive_user("@irc_foobar:matrix.org"))

    def test_exclusive_alias(self) -> None:
        self.service.namespaces[ApplicationService.NS_ALIASES].append(
            _regex("#irc_.*:matrix.org", exclusive=True)
        )
        self.assertTrue(self.service.is_exclusive_alias("#irc_foobar:matrix.org"))

    def test_exclusive_user(self) -> None:
        self.service.namespaces[ApplicationService.NS_USERS].append(
            _regex("@irc_.*:matrix.org", exclusive=True)
        )
        self.assertTrue(self.service.is_exclusive_user("@irc_foobar:matrix.org"))

    def test_exclusive_room(self) -> None:
        self.service.namespaces[ApplicationService.NS_ROOMS].append(
            _regex("!irc_.*:matrix.org", exclusive=True)
        )
        self.assertTrue(self.service.is_exclusive_room("!irc_foobar:matrix.org"))

    @defer.inlineCallbacks
    def test_regex_alias_no_match(
        self,
    ) -> Generator["defer.Deferred[Any]", object, None]:
        self.service.namespaces[ApplicationService.NS_ALIASES].append(
            _regex("#irc_.*:matrix.org")
        )
        self.store.get_aliases_for_room = simple_async_mock(
            ["#xmpp_foobar:matrix.org", "#athing:matrix.org"]
        )
        self.store.get_local_users_in_room = simple_async_mock([])
        self.assertFalse(
            (
                yield defer.ensureDeferred(
                    self.service.is_interested_in_event(
                        self.event.event_id, self.event, self.store
                    )
                )
            )
        )

    @defer.inlineCallbacks
    def test_regex_multiple_matches(
        self,
    ) -> Generator["defer.Deferred[Any]", object, None]:
        self.service.namespaces[ApplicationService.NS_ALIASES].append(
            _regex("#irc_.*:matrix.org")
        )
        self.service.namespaces[ApplicationService.NS_USERS].append(_regex("@irc_.*"))
        self.event.sender = "@irc_foobar:matrix.org"
        self.store.get_aliases_for_room = simple_async_mock(["#irc_barfoo:matrix.org"])
        self.store.get_local_users_in_room = simple_async_mock([])
        self.assertTrue(
            (
                yield self.service.is_interested_in_event(
                    self.event.event_id, self.event, self.store
                )
            )
        )

    @defer.inlineCallbacks
    def test_interested_in_self(self) -> Generator["defer.Deferred[Any]", object, None]:
        # make sure invites get through
        self.service.sender = "@appservice:name"
        self.service.namespaces[ApplicationService.NS_USERS].append(_regex("@irc_.*"))
        self.event.type = "m.room.member"
        self.event.content = {"membership": "invite"}
        self.event.state_key = self.service.sender
        self.assertTrue(
            (
                yield self.service.is_interested_in_event(
                    self.event.event_id, self.event, self.store
                )
            )
        )

    @defer.inlineCallbacks
    def test_member_list_match(self) -> Generator["defer.Deferred[Any]", object, None]:
        self.service.namespaces[ApplicationService.NS_USERS].append(_regex("@irc_.*"))
        # Note that @irc_fo:here is the AS user.
        self.store.get_local_users_in_room = simple_async_mock(
            ["@alice:here", "@irc_fo:here", "@bob:here"]
        )
        self.store.get_aliases_for_room = simple_async_mock([])

        self.event.sender = "@xmpp_foobar:matrix.org"
        self.assertTrue(
            (
                yield self.service.is_interested_in_event(
                    self.event.event_id, self.event, self.store
                )
            )
        )