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

# Copyright 2010 OpenStack LLC.
# 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 json

from lxml import etree
import webob.exc
import webob.dec
from webob import Request

from nova import test
from nova.api.openstack import v2
from nova.api.openstack.v2 import wsgi
from nova.tests.api.openstack import fakes


class APITest(test.TestCase):

    def _wsgi_app(self, inner_app):
        # simpler version of the app than fakes.wsgi_app
        return v2.FaultWrapper(inner_app)

    def test_malformed_json(self):
        req = webob.Request.blank('/')
        req.method = 'POST'
        req.body = '{'
        req.headers["content-type"] = "application/json"

        res = req.get_response(fakes.wsgi_app())
        self.assertEqual(res.status_int, 400)

    def test_malformed_xml(self):
        req = webob.Request.blank('/')
        req.method = 'POST'
        req.body = '<hi im not xml>'
        req.headers["content-type"] = "application/xml"

        res = req.get_response(fakes.wsgi_app())
        self.assertEqual(res.status_int, 400)

    def test_vendor_content_type_json(self):
        ctype = 'application/vnd.openstack.compute+json'

        req = webob.Request.blank('/')
        req.headers['Accept'] = ctype

        res = req.get_response(fakes.wsgi_app())
        self.assertEqual(res.status_int, 200)
        self.assertEqual(res.content_type, ctype)

        body = json.loads(res.body)

    def test_vendor_content_type_xml(self):
        ctype = 'application/vnd.openstack.compute+xml'

        req = webob.Request.blank('/')
        req.headers['Accept'] = ctype

        res = req.get_response(fakes.wsgi_app())
        self.assertEqual(res.status_int, 200)
        self.assertEqual(res.content_type, ctype)

        body = etree.XML(res.body)

    def test_exceptions_are_converted_to_faults(self):

        @webob.dec.wsgify
        def succeed(req):
            return 'Succeeded'

        @webob.dec.wsgify
        def raise_webob_exc(req):
            raise webob.exc.HTTPNotFound(explanation='Raised a webob.exc')

        @webob.dec.wsgify
        def fail(req):
            raise Exception("Threw an exception")

        @webob.dec.wsgify
        def raise_api_fault(req):
            exc = webob.exc.HTTPNotFound(explanation='Raised a webob.exc')
            return wsgi.Fault(exc)

        #api.application = succeed
        api = self._wsgi_app(succeed)
        resp = Request.blank('/').get_response(api)
        self.assertFalse('cloudServersFault' in resp.body, resp.body)
        self.assertEqual(resp.status_int, 200, resp.body)

        #api.application = raise_webob_exc
        api = self._wsgi_app(raise_webob_exc)
        resp = Request.blank('/').get_response(api)
        self.assertFalse('cloudServersFault' in resp.body, resp.body)
        self.assertEqual(resp.status_int, 404, resp.body)

        #api.application = raise_api_fault
        api = self._wsgi_app(raise_api_fault)
        resp = Request.blank('/').get_response(api)
        self.assertTrue('itemNotFound' in resp.body, resp.body)
        self.assertEqual(resp.status_int, 404, resp.body)

        #api.application = fail
        api = self._wsgi_app(fail)
        resp = Request.blank('/').get_response(api)
        self.assertTrue('{"cloudServersFault' in resp.body, resp.body)
        self.assertEqual(resp.status_int, 500, resp.body)

        #api.application = fail
        api = self._wsgi_app(fail)
        resp = Request.blank('/.xml').get_response(api)
        self.assertTrue('<cloudServersFault' in resp.body, resp.body)
        self.assertEqual(resp.status_int, 500, resp.body)
