# Copyright (C) 2013, Walter Bender - Raul Gutierrez Segales
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA

import logging
import os
import time
import urllib
import urlparse

from gi.repository import GConf
from gi.repository import Gtk
from gi.repository import GObject
from gi.repository import WebKit
from gettext import gettext as _
from jarabe import config
from web.facebook import account as fboa
from cpsection.webservices.web_service import WebService


class FacebookService(WebService):
    FB_APP_ID = "172917389475707"
    FB_REDIRECT_URI = "http://www.sugarlabs.org"

    def get_icon_name(self):
        return 'facebook-share'

    def config_service_cb(self, widget, event, container):
        logging.debug('config_service_fb')

        wkv = WebKit.WebView()
        wkv.load_uri(self._fb_auth_url())
        wkv.grab_focus()
        wkv.connect('navigation-policy-decision-requested',
                    self._fb_nav_policy_cb)

        for c in container.get_children():
            container.remove(c)

        container.add(wkv)
        container.show_all()

    def _fb_auth_url(self):
        url = 'http://www.facebook.com/dialog/oauth'
        params = [
            ('client_id', self.FB_APP_ID),
            ('redirect_uri', self.FB_REDIRECT_URI),
            ('response_type', 'token'),
            ('scope', 'publish_stream')
            ]

        return "%s?%s" % (url, urllib.urlencode(params))

    def _fb_nav_policy_cb(self, view, frame, req, action, param):
        uri = req.get_uri()
        if uri is None:
            return

        url_o = urlparse.urlparse(uri)
        params = urlparse.parse_qs(url_o.fragment)
        if params.has_key('access_token') and params.has_key('expires_in'):
            self._fb_save_access_token(params['access_token'][0],
                                       int(params['expires_in'][0]))

    def _fb_save_access_token(self, access_token, expires_in):
        client = GConf.Client.get_default()

        client.set_string(fboa.FacebookOnlineAccount.ACCESS_TOKEN_KEY,
                          access_token)

        expiry_time = int(time.time()) + expires_in
        client.set_int(
            fboa.FacebookOnlineAccount.ACCESS_TOKEN_KEY_EXPIRATION_DATE,
            expiry_time)


def get_service():
    return FacebookService()