# -*- coding: utf-8 -*-

"""
requests.config
~~~~~~~~~~~~~~~

This module provides the Requests settings feature set.

"""

class Settings(object):
    _singleton = {}

    # attributes with defaults
    __attrs__ = []

    def __init__(self, **kwargs):
        super(Settings, self).__init__()

        self.__dict__ = self._singleton


    def __call__(self, *args, **kwargs):
        # new instance of class to call
        r = self.__class__()

        # cache previous settings for __exit__
        r.__cache = self.__dict__.copy()
        map(self.__cache.setdefault, self.__attrs__)

        # set new settings
        self.__dict__.update(*args, **kwargs)

        return r


    def __enter__(self):
        pass


    def __exit__(self, *args):

        # restore cached copy
        self.__dict__.update(self.__cache.copy())
        del self.__cache


    def __getattribute__(self, key):
        if key in object.__getattribute__(self, '__attrs__'):
            try:
                return object.__getattribute__(self, key)
            except AttributeError:
                return None
        return object.__getattribute__(self, key)


settings = Settings()

settings.base_headers = {'User-Agent': 'python-requests.org'}
settings.accept_gzip = True
settings.proxies = None
settings.verbose = None
settings.timeout = None
settings.max_redirects = 30

#: Use socket.setdefaulttimeout() as fallback?
settings.timeout_fallback = True
