#!/usr/bin/env python
#
# Copyright (c) 2012 Raul Gutierrez S. - rgs@itevenworks.net
# Copyright (c) 2013 Alan Aguiar alanjas@hotmail.com

#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:

#The above copyright notice and this permission notice shall be included in
#all copies or substantial portions of the Software.

#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#THE SOFTWARE.

# NOTE: This is a plugin to enable uploading of Turtle Art projects to
# Facebook. It currently works for the GTK3 version of Turtle Blocks and
# only from the GNOME desktop.
# USAGE: Download this file into the gnome_plugin directory; make sure the
# filename is fb_plugin.py (Mediawiki capitalizes the first letter of files).
# When you launch TA from the GNOME desktop by running turtleblocks.py
# you should see a new menu, Facebook, which allows you to upload your
# project. Please report any problems to rgs and walter.


import pycurl
import sys
import urlparse

import gtk
import webkit
from plugin import Plugin
from util.menubuilder import MenuBuilder, MENUBAR
from gettext import gettext as _

class FbUploader():
    UPLOAD_URL = "https://graph.facebook.com/me/photos?access_token=%s"

    def __init__(self, image_path, access_token):
        self._image_path = image_path
        self._access_token = access_token

    def doit(self):
        c = pycurl.Curl()
        c.setopt(c.POST, 1)
        c.setopt(c.URL,  self._get_url())
        c.setopt(c.HTTPPOST, self._get_params(c))
        c.perform()
        print c.getinfo(c.HTTP_CODE)

    def _get_url(self):
        return self.UPLOAD_URL % (self._access_token)

    def _get_params(self, c):
        params = []
        params.append(('source', (c.FORM_FILE, self._image_path)))

        return params


class Fb_plugin(Plugin):
    APP_ID = "172917389475707"
    REDIRECT_URI = "http://www.sugarlabs.org"

    def __init__(self, parent):
        self._access_token = ""
        self._auth_win = None

    def get_menu(self):
        if _('Upload') in MENUBAR:
            menu, upload_menu = MENUBAR[_('Upload')]
        else:
            upload_menu = None
            menu = gtk.Menu()
        MenuBuilder.make_menu_item(menu, _('Facebook wall post'),
                                   self._post_menu_cb)
        if upload_menu is not None:
            return None  # We don't have to add it since it already exists
        else:
            upload_menu = MenuBuilder.make_sub_menu(menu, _('Upload'))
            return upload_menu

    def set_tw(self, turtleart_window):
        self.tw = turtleart_window

    def enabled(self):
        return True

    def _post_menu_cb(self, widget):
        if self._access_token == "":
            self._grab_fb_app_token()
            return

        self._post_to_fb()

    def _grab_fb_app_token(self):
        url = self._get_auth_url()
        w = gtk.Window()
        w.move(200, 200)
        w.set_size_request(800, 400)
        wkv = webkit.WebView()
        wkv.load_uri(url)
        wkv.grab_focus()
        wkv.connect('navigation-policy-decision-requested', self._nav_policy_cb)
        w.add(wkv)
        w.show_all()
        self._auth_win = w

    def _get_auth_url(self):
        url = "http://www.facebook.com/dialog/oauth?client_id=%s" % (self.APP_ID)
        url += "&redirect_uri=%s" % (self.REDIRECT_URI)
        url += "&response_type=token&scope=publish_stream"

        return url

    def _nav_policy_cb(self, view, frame, req, action, param):
        uri = req.get_uri()
        if uri:
            url_o = urlparse.urlparse(uri)
            params = urlparse.parse_qs(url_o.fragment)
            if params.has_key('access_token'):
                self._access_token = params['access_token'][0]
                self._auth_win.hide()
                self._post_to_fb()

    def _post_to_fb(self):
        ta_file, image_file = self.tw.save_for_upload("ta fb")
        uploader = FbUploader(image_file, self._access_token)
        uploader.doit()