# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
#    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 unittest
import logging
import webob

from nova import context
from nova import exception
from nova import flags
from nova import test
from nova.api import ec2
from nova.auth import manager


FLAGS = flags.FLAGS


class Context(object):
    pass


class AccessTestCase(test.TestCase):
    def setUp(self):
        super(AccessTestCase, self).setUp()
        um = manager.AuthManager()
        self.context = context.get_admin_context()
        # Make test users
        self.testadmin = um.create_user('testadmin')
        self.testpmsys = um.create_user('testpmsys')
        self.testnet = um.create_user('testnet')
        self.testsys = um.create_user('testsys')
        # Assign some rules
        um.add_role('testadmin', 'cloudadmin')
        um.add_role('testpmsys', 'sysadmin')
        um.add_role('testnet', 'netadmin')
        um.add_role('testsys', 'sysadmin')

        # Make a test project
        self.project = um.create_project('testproj',
                                         'testpmsys',
                                         'a test project',
                                         ['testpmsys', 'testnet', 'testsys'])
        self.project.add_role(self.testnet, 'netadmin')
        self.project.add_role(self.testsys, 'sysadmin')
        #user is set in each test

        def noopWSGIApp(environ, start_response):
            start_response('200 OK', [])
            return ['']

        self.mw = ec2.Authorizer(noopWSGIApp)
        self.mw.action_roles = {'str': {
                '_allow_all': ['all'],
                '_allow_none': [],
                '_allow_project_manager': ['projectmanager'],
                '_allow_sys_and_net': ['sysadmin', 'netadmin'],
                '_allow_sysadmin': ['sysadmin']}}

    def tearDown(self):
        um = manager.AuthManager()
        # Delete the test project
        um.delete_project('testproj')
        # Delete the test user
        um.delete_user('testadmin')
        um.delete_user('testpmsys')
        um.delete_user('testnet')
        um.delete_user('testsys')
        super(AccessTestCase, self).tearDown()

    def response_status(self, user, methodName):
        ctxt = context.RequestContext(user, self.project)
        environ = {'ec2.context': ctxt,
                   'ec2.controller': 'some string',
                   'ec2.action': methodName}
        req = webob.Request.blank('/', environ)
        resp = req.get_response(self.mw)
        return resp.status_int

    def shouldAllow(self, user, methodName):
        self.assertEqual(200, self.response_status(user, methodName))

    def shouldDeny(self, user, methodName):
        self.assertEqual(401, self.response_status(user, methodName))

    def test_001_allow_all(self):
        users = [self.testadmin, self.testpmsys, self.testnet, self.testsys]
        for user in users:
            self.shouldAllow(user, '_allow_all')

    def test_002_allow_none(self):
        self.shouldAllow(self.testadmin, '_allow_none')
        users = [self.testpmsys, self.testnet, self.testsys]
        for user in users:
            self.shouldDeny(user, '_allow_none')

    def test_003_allow_project_manager(self):
        for user in [self.testadmin, self.testpmsys]:
            self.shouldAllow(user, '_allow_project_manager')
        for user in [self.testnet, self.testsys]:
            self.shouldDeny(user, '_allow_project_manager')

    def test_004_allow_sys_and_net(self):
        for user in [self.testadmin, self.testnet, self.testsys]:
            self.shouldAllow(user, '_allow_sys_and_net')
        # denied because it doesn't have the per project sysadmin
        for user in [self.testpmsys]:
            self.shouldDeny(user, '_allow_sys_and_net')

if __name__ == "__main__":
    # TODO: Implement use_fake as an option
    unittest.main()