#!/bin/env python
#
# 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 SimpleHTTPServer
import SocketServer


class AllowOriginRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
    def do_GET(self):
        print("App Catalog Versions:",
              self.headers.get('X-App-Catalog-Versions', ''))
        return SimpleHTTPServer.SimpleHTTPRequestHandler.do_GET(self)

    def end_headers(self):
        self.send_header("Access-Control-Allow-Origin", "*")
        SimpleHTTPServer.SimpleHTTPRequestHandler.end_headers(self)

    def do_OPTIONS(self):
        self.send_response(200)
        self.send_header("Access-Control-Allow-Origin", "*")
        self.send_header("Access-Control-Allow-Headers",
                         "X-App-Catalog-Versions")
        self.send_header("Allow", "GET")

if __name__ == '__main__':
    PORT = 18001
    httpd = SocketServer.TCPServer(("", PORT), AllowOriginRequestHandler)
    print("serving at port", PORT)
    httpd.serve_forever()