# Copyright 2016 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 pytest
import six

from google.auth import _service_account_info
from google.auth import crypt


DATA_DIR = os.path.join(os.path.dirname(__file__), 'data')
SERVICE_ACCOUNT_JSON_FILE = os.path.join(DATA_DIR, 'service_account.json')

with open(SERVICE_ACCOUNT_JSON_FILE, 'r') as fh:
    SERVICE_ACCOUNT_INFO = json.load(fh)


def test_from_dict():
    signer = _service_account_info.from_dict(SERVICE_ACCOUNT_INFO)
    assert isinstance(signer, crypt.RSASigner)
    assert signer.key_id == SERVICE_ACCOUNT_INFO['private_key_id']


def test_from_dict_bad_private_key():
    info = SERVICE_ACCOUNT_INFO.copy()
    info['private_key'] = 'garbage'

    with pytest.raises(ValueError) as excinfo:
        _service_account_info.from_dict(info)

    assert excinfo.match(r'No key could be detected')


def test_from_dict_bad_format():
    with pytest.raises(ValueError) as excinfo:
        _service_account_info.from_dict({}, require=('meep',))

    assert excinfo.match(r'missing fields')


def test_from_filename():
    info, signer = _service_account_info.from_filename(
        SERVICE_ACCOUNT_JSON_FILE)

    for key, value in six.iteritems(SERVICE_ACCOUNT_INFO):
        assert info[key] == value

    assert isinstance(signer, crypt.RSASigner)
    assert signer.key_id == SERVICE_ACCOUNT_INFO['private_key_id']
