# -*- coding: utf-8 -*-
# Copyright 2015 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.
from tests import unittest
from twisted.internet import defer

from mock import Mock, NonCallableMock

from synapse.api.auth import Auth
from synapse.api.errors import AuthError
from synapse.types import UserID

class AuthTestCase(unittest.TestCase):

    def setUp(self):
        self.state_handler = Mock()
        self.store = Mock()

        self.hs = Mock()
        self.hs.get_datastore = Mock(return_value=self.store)
        self.hs.get_state_handler = Mock(return_value=self.state_handler)
        self.auth = Auth(self.hs)

        self.test_user = "@foo:bar"
        self.test_token = "_test_token_"

    @defer.inlineCallbacks
    def test_get_user_by_req_user_valid_token(self):
        self.store.get_app_service_by_token = Mock(return_value=None)
        user_info = {
            "name": self.test_user,
            "device_id": "nothing",
            "token_id": "ditto",
            "admin": False
        }
        self.store.get_user_by_token = Mock(return_value=user_info)

        request = Mock(args={})
        request.args["access_token"] = [self.test_token]
        request.requestHeaders.getRawHeaders = Mock(return_value=[""])
        (user, info) = yield self.auth.get_user_by_req(request)
        self.assertEquals(user.to_string(), self.test_user)

    def test_get_user_by_req_user_bad_token(self):
        self.store.get_app_service_by_token = Mock(return_value=None)
        self.store.get_user_by_token = Mock(return_value=None)

        request = Mock(args={})
        request.args["access_token"] = [self.test_token]
        request.requestHeaders.getRawHeaders = Mock(return_value=[""])
        d = self.auth.get_user_by_req(request)
        self.failureResultOf(d, AuthError)

    def test_get_user_by_req_user_missing_token(self):
        self.store.get_app_service_by_token = Mock(return_value=None)
        user_info = {
            "name": self.test_user,
            "device_id": "nothing",
            "token_id": "ditto",
            "admin": False
        }
        self.store.get_user_by_token = Mock(return_value=user_info)

        request = Mock(args={})
        request.requestHeaders.getRawHeaders = Mock(return_value=[""])
        d = self.auth.get_user_by_req(request)
        self.failureResultOf(d, AuthError)

    @defer.inlineCallbacks
    def test_get_user_by_req_appservice_valid_token(self):
        app_service = Mock(token="foobar", url="a_url", sender=self.test_user)
        self.store.get_app_service_by_token = Mock(return_value=app_service)
        self.store.get_user_by_token = Mock(return_value=None)

        request = Mock(args={})
        request.args["access_token"] = [self.test_token]
        request.requestHeaders.getRawHeaders = Mock(return_value=[""])
        (user, info) = yield self.auth.get_user_by_req(request)
        self.assertEquals(user.to_string(), self.test_user)

    def test_get_user_by_req_appservice_bad_token(self):
        self.store.get_app_service_by_token = Mock(return_value=None)
        self.store.get_user_by_token = Mock(return_value=None)

        request = Mock(args={})
        request.args["access_token"] = [self.test_token]
        request.requestHeaders.getRawHeaders = Mock(return_value=[""])
        d = self.auth.get_user_by_req(request)
        self.failureResultOf(d, AuthError)

    def test_get_user_by_req_appservice_missing_token(self):
        app_service = Mock(token="foobar", url="a_url", sender=self.test_user)
        self.store.get_app_service_by_token = Mock(return_value=app_service)
        self.store.get_user_by_token = Mock(return_value=None)

        request = Mock(args={})
        request.requestHeaders.getRawHeaders = Mock(return_value=[""])
        d = self.auth.get_user_by_req(request)
        self.failureResultOf(d, AuthError)

    @defer.inlineCallbacks
    def test_get_user_by_req_appservice_valid_token_valid_user_id(self):
        masquerading_user_id = "@doppelganger:matrix.org"
        app_service = Mock(token="foobar", url="a_url", sender=self.test_user)
        app_service.is_interested_in_user = Mock(return_value=True)
        self.store.get_app_service_by_token = Mock(return_value=app_service)
        self.store.get_user_by_token = Mock(return_value=None)

        request = Mock(args={})
        request.args["access_token"] = [self.test_token]
        request.args["user_id"] = [masquerading_user_id]
        request.requestHeaders.getRawHeaders = Mock(return_value=[""])
        (user, info) = yield self.auth.get_user_by_req(request)
        self.assertEquals(user.to_string(), masquerading_user_id)

    def test_get_user_by_req_appservice_valid_token_bad_user_id(self):
        masquerading_user_id = "@doppelganger:matrix.org"
        app_service = Mock(token="foobar", url="a_url", sender=self.test_user)
        app_service.is_interested_in_user = Mock(return_value=False)
        self.store.get_app_service_by_token = Mock(return_value=app_service)
        self.store.get_user_by_token = Mock(return_value=None)

        request = Mock(args={})
        request.args["access_token"] = [self.test_token]
        request.args["user_id"] = [masquerading_user_id]
        request.requestHeaders.getRawHeaders = Mock(return_value=[""])
        d = self.auth.get_user_by_req(request)
        self.failureResultOf(d, AuthError)