# Copyright 2017 Google Inc.
#
# 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 json
import os

import mock
import pytest

from google_auth_oauthlib import helpers

DATA_DIR = os.path.join(os.path.dirname(__file__), 'data')
CLIENT_SECRETS_FILE = os.path.join(DATA_DIR, 'client_secrets.json')

with open(CLIENT_SECRETS_FILE, 'r') as fh:
    CLIENT_SECRETS_INFO = json.load(fh)


def test_session_from_client_config_web():
    session, config = helpers.session_from_client_config(
        CLIENT_SECRETS_INFO, scopes=mock.sentinel.scopes)

    assert config == CLIENT_SECRETS_INFO
    assert session.client_id == CLIENT_SECRETS_INFO['web']['client_id']
    assert session.scope == mock.sentinel.scopes


def test_session_from_client_config_installed():
    info = {'installed': CLIENT_SECRETS_INFO['web']}
    session, config = helpers.session_from_client_config(
        info, scopes=mock.sentinel.scopes)
    assert config == info
    assert session.client_id == info['installed']['client_id']
    assert session.scope == mock.sentinel.scopes


def test_session_from_client_config_bad_format():
    with pytest.raises(ValueError):
        helpers.session_from_client_config({}, scopes=[])


def test_session_from_client_config_missing_keys():
    with pytest.raises(ValueError):
        helpers.session_from_client_config({'web': {}}, scopes=[])


def test_session_from_client_secrets_file():
    session, config = helpers.session_from_client_secrets_file(
        CLIENT_SECRETS_FILE, scopes=mock.sentinel.scopes)
    assert config == CLIENT_SECRETS_INFO
    assert session.client_id == CLIENT_SECRETS_INFO['web']['client_id']
    assert session.scope == mock.sentinel.scopes


@pytest.fixture
def session():
    session, _ = helpers.session_from_client_config(
        CLIENT_SECRETS_INFO, scopes=mock.sentinel.scopes)
    yield session


def test_credentials_from_session(session):
    session.token = {
        'access_token': mock.sentinel.access_token,
        'refresh_token': mock.sentinel.refresh_token
    }

    credentials = helpers.credentials_from_session(
        session, CLIENT_SECRETS_INFO['web'])

    assert credentials.token == mock.sentinel.access_token
    assert credentials._refresh_token == mock.sentinel.refresh_token
    assert credentials._client_id == CLIENT_SECRETS_INFO['web']['client_id']
    assert (credentials._client_secret ==
            CLIENT_SECRETS_INFO['web']['client_secret'])
    assert credentials._token_uri == CLIENT_SECRETS_INFO['web']['token_uri']


def test_bad_credentials(session):
    with pytest.raises(ValueError):
        helpers.credentials_from_session(session)
