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# Copyright 2011-2012 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

#

#   1. Redistributions of source code must retain the above

#      copyright notice, self.list of conditions and the following

#      disclaimer.

#

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, self.list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

#

# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

# or implied, of GRNET S.A.

class HTTPResponse(object):

    def __init__(self, request=None, prefetched=False):

        self.request=request

        self.prefetched = prefetched

    def _get_response(self):

        """Wait for http response as late as possible: the first time needed"""

        if self.prefetched:

            return

        self = self.request.response

        self.prefetched = True

    def release(self):

        """Release the connection.

        Use this after finished using the response"""

        raise NotImplementedError

    @property 

    def prefetched(self):

        return self._prefetched

    @prefetched.setter

    def prefetched(self, p):

        self._prefetched = p

    @property 

    def content(self):

        self._get_response()

        return self._content

    @content.setter 

    def content(self, v):

        self._content = v

    @property 

    def text(self):

        self._get_response()

        return self._text

    @text.setter 

    def text(self, v):

        self._text = v

    @property 

    def json(self):

        self._get_response()

        return self._json

    @json.setter 

    def json(self, v):

        self._json = v

    @property 

    def headers(self):

        self._get_response()

        return self._headers

    @headers.setter 

    def headers(self, v):

        self._headers = v

    @property 

    def status_code(self):

        self._get_response()

        return self._status_code

    @status_code.setter 

    def status_code(self, v):

        self._status_code = v

    @property 

    def status(self):

        self._get_response()

        return self._status

    @status.setter 

    def status(self, v):

        self._status = v

    @property 

    def request(self):

        return self._request

    @request.setter 

    def request(self, v):

        self._request = v

class HTTPConnectionError(Exception):

    def __init__(self, message, status=0, details=''):

            super(HTTPConnectionError, self).__init__(message)

        self.message = message

        self.status = status

        self.details = details

class HTTPConnection(object):

    def __init__(self, method=None, url=None, params={}, headers={}):

            self.headers = headers

            self.params = params

            self.url = url

            self.method = method

    def raise_for_status(self, r):

        message = "%d %s" % (r.status_code, r.status)

        try:

            details = r.text

        except:

            details = ''

        raise HTTPConnectionError(message, r.status_code, details)

    def set_header(self, name, value):

            self.headers[unicode(name)] = unicode(value)

    def remove_header(self, name):

            try:

                    self.headers.pop(name)

            except KeyError:

                    pass

    def replace_headers(self, new_headers):

            self.headers = new_headers

    def reset_headers(self):

            self.replace_headers({})

    def set_param(self, name, value=None):

            self.params[name] = value

    def remove_param(self, name):

            try:

                    self.params.pop(name)

            except KeyError:

                    pass

    def replace_params(self, new_params):

            self.params = new_params

    def reset_params(self):

            self.replace_params({})

    def set_url(self, url):

            self.url = url

    def set_method(self, method):

            self.method = method

        def perform_request(self, method=None, url=None, async_headers={}, async_params={}, data=None):

                """

                @return an HTTPResponse (also in self.response of this object)

                named args offer the ability to reset a request or a part of the request

                e.g. r = HTTPConnection(url='http://....', method='GET')

                         r.perform_request()

                         r.perform_request(method='POST')

                will perform a GET request and later a POST request on the same URL

                another example:

                         r = HTTPConnection(url='http://....', params='format=json')

                         r.perform_request(method='GET')

                         r.perform_request(method='POST')

                """

                raise NotImplementedError

    """

    @property 

    def response(self):

        return self._response

    @response.setter

    def response(self, r):

        self._response = r

    """