# Copyright (c) 2018-2019, George Tokmaji

# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.

# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

from bottle import HTTPResponse, route, response, request, hook

def set_cors_headers(headers):
    headers["Access-Control-Allow-Origin"] = "*"
    headers["Access-Control-Allow-Methods"] = "POST, GET, PUT, DELETE, PATCH, HEAD"
    headers["Access-Control-Allow-Headers"] = request.headers.get("Access-Control-Request-Headers", "*")

HTTPResponse.__oldinit__ = HTTPResponse.__init__
def newinit(self, body="", status=None, headers=None, **more_headers):
    set_cors_headers(more_headers)
    self.__oldinit__(body, status, headers, **more_headers)

HTTPResponse.__init__ = newinit

@route("<path:path>", method="OPTIONS")
def options(path):
    return HTTPResponse(status=204)

@hook("after_request")
def enable_cors():
    set_cors_headers(response.headers)