# 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.

"""Test script for Identity-Aware Proxy code samples."""

import os
import time

import pytest

import make_iap_request
import validate_jwt

# The hostname of an application protected by Identity-Aware Proxy.
# When a request is made to https://${JWT_REFLECT_HOSTNAME}/, the
# application should respond with the value of the
# X-Goog-Authenticated-User-JWT (and nothing else.) The
# app_engine_app/ subdirectory contains an App Engine standard
# environment app that does this.
# The project must have the service account used by this test added as a
# member of the project.
REFLECT_SERVICE_HOSTNAME = "gcp-devrel-iap-reflect.appspot.com"
IAP_CLIENT_ID = (
    "320431926067-ldm6839p8l2sei41nlsfc632l4d0v2u1" ".apps.googleusercontent.com"
)
IAP_APP_ID = "gcp-devrel-iap-reflect"
IAP_PROJECT_NUMBER = "320431926067"


@pytest.mark.flaky
def test_main(capsys):
    # It only passes on Kokoro now. Skipping in other places.
    # The envvar `TRAMPOLINE_CI` will be set once #3860 is merged.
    if os.environ.get("TRAMPOLINE_CI", "kokoro") != "kokoro":
        pytest.skip("Only passing on Kokoro.")
    # JWTs are obtained by IAP-protected applications whenever an
    # end-user makes a request.  We've set up an app that echoes back
    # the IAP JWT in order to expose it to this test.  Thus, this test
    # exercises both make_iap_request and validate_jwt.
    resp = make_iap_request.make_iap_request(
        f"https://{REFLECT_SERVICE_HOSTNAME}/", IAP_CLIENT_ID
    )
    iap_jwt = resp.split(": ").pop()

    # App Engine JWT audience format below
    expected_audience = "/projects/{}/apps/{}".format(IAP_PROJECT_NUMBER, IAP_APP_ID)

    # We see occational test failures when the system clock in our
    # test VMs is incorrect. Sleeping 30 seconds to avoid the failure.
    # https://github.com/GoogleCloudPlatform/python-docs-samples/issues/4467

    time.sleep(30)

    jwt_validation_result = validate_jwt.validate_iap_jwt(iap_jwt, expected_audience)

    assert not jwt_validation_result[2]
    assert jwt_validation_result[0]
    assert jwt_validation_result[1]