# -*- coding: utf-8 -*-
#
# Copyright 2018 Google LLC
#
# 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
#
#     https://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.
"""Unit tests."""

import mock
import pytest

from google.cloud import oslogin_v1
from google.cloud.oslogin_v1.proto import common_pb2
from google.cloud.oslogin_v1.proto import oslogin_pb2
from google.protobuf import empty_pb2


class MultiCallableStub(object):
    """Stub for the grpc.UnaryUnaryMultiCallable interface."""

    def __init__(self, method, channel_stub):
        self.method = method
        self.channel_stub = channel_stub

    def __call__(self, request, timeout=None, metadata=None, credentials=None):
        self.channel_stub.requests.append((self.method, request))

        response = None
        if self.channel_stub.responses:
            response = self.channel_stub.responses.pop()

        if isinstance(response, Exception):
            raise response

        if response:
            return response


class ChannelStub(object):
    """Stub for the grpc.Channel interface."""

    def __init__(self, responses=[]):
        self.responses = responses
        self.requests = []

    def unary_unary(self,
                    method,
                    request_serializer=None,
                    response_deserializer=None):
        return MultiCallableStub(method, self)


class CustomException(Exception):
    pass


class TestOsLoginServiceClient(object):
    def test_delete_posix_account(self):
        channel = ChannelStub()
        patch = mock.patch('google.api_core.grpc_helpers.create_channel')
        with patch as create_channel:
            create_channel.return_value = channel
            client = oslogin_v1.OsLoginServiceClient()

        # Setup Request
        name = client.project_path('[USER]', '[PROJECT]')

        client.delete_posix_account(name)

        assert len(channel.requests) == 1
        expected_request = oslogin_pb2.DeletePosixAccountRequest(name=name)
        actual_request = channel.requests[0][1]
        assert expected_request == actual_request

    def test_delete_posix_account_exception(self):
        # Mock the API response
        channel = ChannelStub(responses=[CustomException()])
        patch = mock.patch('google.api_core.grpc_helpers.create_channel')
        with patch as create_channel:
            create_channel.return_value = channel
            client = oslogin_v1.OsLoginServiceClient()

        # Setup request
        name = client.project_path('[USER]', '[PROJECT]')

        with pytest.raises(CustomException):
            client.delete_posix_account(name)

    def test_delete_ssh_public_key(self):
        channel = ChannelStub()
        patch = mock.patch('google.api_core.grpc_helpers.create_channel')
        with patch as create_channel:
            create_channel.return_value = channel
            client = oslogin_v1.OsLoginServiceClient()

        # Setup Request
        name = client.fingerprint_path('[USER]', '[FINGERPRINT]')

        client.delete_ssh_public_key(name)

        assert len(channel.requests) == 1
        expected_request = oslogin_pb2.DeleteSshPublicKeyRequest(name=name)
        actual_request = channel.requests[0][1]
        assert expected_request == actual_request

    def test_delete_ssh_public_key_exception(self):
        # Mock the API response
        channel = ChannelStub(responses=[CustomException()])
        patch = mock.patch('google.api_core.grpc_helpers.create_channel')
        with patch as create_channel:
            create_channel.return_value = channel
            client = oslogin_v1.OsLoginServiceClient()

        # Setup request
        name = client.fingerprint_path('[USER]', '[FINGERPRINT]')

        with pytest.raises(CustomException):
            client.delete_ssh_public_key(name)

    def test_get_login_profile(self):
        # Setup Expected Response
        name_2 = 'name2-1052831874'
        suspended = False
        expected_response = {'name': name_2, 'suspended': suspended}
        expected_response = oslogin_pb2.LoginProfile(**expected_response)

        # Mock the API response
        channel = ChannelStub(responses=[expected_response])
        patch = mock.patch('google.api_core.grpc_helpers.create_channel')
        with patch as create_channel:
            create_channel.return_value = channel
            client = oslogin_v1.OsLoginServiceClient()

        # Setup Request
        name = client.user_path('[USER]')

        response = client.get_login_profile(name)
        assert expected_response == response

        assert len(channel.requests) == 1
        expected_request = oslogin_pb2.GetLoginProfileRequest(name=name)
        actual_request = channel.requests[0][1]
        assert expected_request == actual_request

    def test_get_login_profile_exception(self):
        # Mock the API response
        channel = ChannelStub(responses=[CustomException()])
        patch = mock.patch('google.api_core.grpc_helpers.create_channel')
        with patch as create_channel:
            create_channel.return_value = channel
            client = oslogin_v1.OsLoginServiceClient()

        # Setup request
        name = client.user_path('[USER]')

        with pytest.raises(CustomException):
            client.get_login_profile(name)

    def test_get_ssh_public_key(self):
        # Setup Expected Response
        key = 'key106079'
        expiration_time_usec = 2058878882
        fingerprint = 'fingerprint-1375934236'
        expected_response = {
            'key': key,
            'expiration_time_usec': expiration_time_usec,
            'fingerprint': fingerprint
        }
        expected_response = common_pb2.SshPublicKey(**expected_response)

        # Mock the API response
        channel = ChannelStub(responses=[expected_response])
        patch = mock.patch('google.api_core.grpc_helpers.create_channel')
        with patch as create_channel:
            create_channel.return_value = channel
            client = oslogin_v1.OsLoginServiceClient()

        # Setup Request
        name = client.fingerprint_path('[USER]', '[FINGERPRINT]')

        response = client.get_ssh_public_key(name)
        assert expected_response == response

        assert len(channel.requests) == 1
        expected_request = oslogin_pb2.GetSshPublicKeyRequest(name=name)
        actual_request = channel.requests[0][1]
        assert expected_request == actual_request

    def test_get_ssh_public_key_exception(self):
        # Mock the API response
        channel = ChannelStub(responses=[CustomException()])
        patch = mock.patch('google.api_core.grpc_helpers.create_channel')
        with patch as create_channel:
            create_channel.return_value = channel
            client = oslogin_v1.OsLoginServiceClient()

        # Setup request
        name = client.fingerprint_path('[USER]', '[FINGERPRINT]')

        with pytest.raises(CustomException):
            client.get_ssh_public_key(name)

    def test_import_ssh_public_key(self):
        # Setup Expected Response
        expected_response = {}
        expected_response = oslogin_pb2.ImportSshPublicKeyResponse(
            **expected_response)

        # Mock the API response
        channel = ChannelStub(responses=[expected_response])
        patch = mock.patch('google.api_core.grpc_helpers.create_channel')
        with patch as create_channel:
            create_channel.return_value = channel
            client = oslogin_v1.OsLoginServiceClient()

        # Setup Request
        parent = client.user_path('[USER]')
        ssh_public_key = {}

        response = client.import_ssh_public_key(parent, ssh_public_key)
        assert expected_response == response

        assert len(channel.requests) == 1
        expected_request = oslogin_pb2.ImportSshPublicKeyRequest(
            parent=parent, ssh_public_key=ssh_public_key)
        actual_request = channel.requests[0][1]
        assert expected_request == actual_request

    def test_import_ssh_public_key_exception(self):
        # Mock the API response
        channel = ChannelStub(responses=[CustomException()])
        patch = mock.patch('google.api_core.grpc_helpers.create_channel')
        with patch as create_channel:
            create_channel.return_value = channel
            client = oslogin_v1.OsLoginServiceClient()

        # Setup request
        parent = client.user_path('[USER]')
        ssh_public_key = {}

        with pytest.raises(CustomException):
            client.import_ssh_public_key(parent, ssh_public_key)

    def test_update_ssh_public_key(self):
        # Setup Expected Response
        key = 'key106079'
        expiration_time_usec = 2058878882
        fingerprint = 'fingerprint-1375934236'
        expected_response = {
            'key': key,
            'expiration_time_usec': expiration_time_usec,
            'fingerprint': fingerprint
        }
        expected_response = common_pb2.SshPublicKey(**expected_response)

        # Mock the API response
        channel = ChannelStub(responses=[expected_response])
        patch = mock.patch('google.api_core.grpc_helpers.create_channel')
        with patch as create_channel:
            create_channel.return_value = channel
            client = oslogin_v1.OsLoginServiceClient()

        # Setup Request
        name = client.fingerprint_path('[USER]', '[FINGERPRINT]')
        ssh_public_key = {}

        response = client.update_ssh_public_key(name, ssh_public_key)
        assert expected_response == response

        assert len(channel.requests) == 1
        expected_request = oslogin_pb2.UpdateSshPublicKeyRequest(
            name=name, ssh_public_key=ssh_public_key)
        actual_request = channel.requests[0][1]
        assert expected_request == actual_request

    def test_update_ssh_public_key_exception(self):
        # Mock the API response
        channel = ChannelStub(responses=[CustomException()])
        patch = mock.patch('google.api_core.grpc_helpers.create_channel')
        with patch as create_channel:
            create_channel.return_value = channel
            client = oslogin_v1.OsLoginServiceClient()

        # Setup request
        name = client.fingerprint_path('[USER]', '[FINGERPRINT]')
        ssh_public_key = {}

        with pytest.raises(CustomException):
            client.update_ssh_public_key(name, ssh_public_key)
