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# Copyright 2009 Simon Schampijer
#
# 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

"""WebSDK Activity: A studio for developing an activity."""

import gtk
import gobject
import os
import sys
import logging
import socket
import subprocess

from gettext import gettext as _

from sugar.activity import activity
from sugar.activity.activity import get_bundle_path

USE_GECKO=False
if not USE_GECKO:
    try:
        import webkit
        from websdk.inspector import Inspector
    except ImportError:
        try:
            import websdk.webkit_local as webkit 
            from websdk.inspector import Inspector
        except ImportError:
            print "Webkit not found"
            USE_GECKO=True
if USE_GECKO:
    import hulahop
    hulahop.startup(os.path.join(activity.get_activity_root(), 'data/gecko'))
    from websdk.browser import Browser

def yieldsleep(func):
    def start(*args, **kwds):
        iterable = func(*args, **kwds)
        def step(*args, **kwds):
            try:
                time = next(iterable)
                gobject.timeout_add_seconds(time, step)
            except StopIteration:
                pass
        gobject.idle_add(step)
    return start

def PickUnusedPort():
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.bind(('localhost', 0))
    addr, port = s.getsockname()
    s.close()
    return port

def isOpen(ip,port):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    try:
        s.connect((ip, int(port)))
        s.shutdown(2)
        return True
    except:
        return False

class HelloWorldActivity(activity.Activity):
    """HelloWorldActivity class as specified in activity.info"""

    def __init__(self, handle):
        """Set up the HelloWorld activity."""
        activity.Activity.__init__(self, handle)

        self.port = PickUnusedPort()
        self.serverprocess = None
        self.bundle_dir = get_bundle_path() 
        self.max_participants = 1

        OLD_TOOLBAR = False 
        try:
            from sugar.graphics.toolbarbox import ToolbarBox, ToolbarButton, ToolButton
            from sugar.activity.widgets import ActivityToolbarButton, StopButton, \
            ShareButton, KeepButton, TitleEntry, ActivityButton

        except ImportError:
            OLD_TOOLBAR = True

        if not self._shared_activity: #I am the initiator
            self.start_server()
        else:
            self.connect('joined', self._joined_cb)
            if self.get_shared():     # we have already joined
                self._joined_cb()

        if OLD_TOOLBAR:
            from sugar.activity.activity import Activity, ActivityToolbox
            toolbox = ActivityToolbox(self)
            self.set_toolbox(toolbox)
            toolbox.show()
        else:
            # toolbar with the new toolbar redesign
            toolbar_box = ToolbarBox()

            activity_button = ActivityButton(self)
            toolbar_box.toolbar.insert(activity_button, 0)
            activity_button.show()

            title_entry = TitleEntry(self)
            toolbar_box.toolbar.insert(title_entry, -1)
            title_entry.show()

            share_button = ShareButton(self)
            toolbar_box.toolbar.insert(share_button, -1)
            share_button.show()

            separator = gtk.SeparatorToolItem()
            separator.props.draw = False
            separator.set_expand(True)
            toolbar_box.toolbar.insert(separator, -1)
            separator.show()

            #play_image = gtk.image_new_from_stock(gtk.STOCK_MEDIA_PLAY,
            #                                    gtk.ICON_SIZE_BUTTON)
            #play_image.show()

            start_button = ToolButton('go-home')
            #start_button.set_icon_widget(play_image)
            start_button.show()
            start_button.connect('clicked', self.__start_button_cb)

            toolbar_box.toolbar.insert(start_button, -1)

            debug_button = ToolButton("activity-debug")
            toolbar_box.toolbar.insert(debug_button, -1)
            debug_button.connect('clicked', self.__debug_button_cb)
            debug_button.show()

            stop_button = StopButton(self)
            toolbar_box.toolbar.insert(stop_button, -1)
            stop_button.show()

            self.set_toolbar_box(toolbar_box)
            toolbar_box.show()

        if not USE_GECKO:
            self.web_view = webkit.WebView()
            settings = self.web_view.get_settings()
            settings.set_property("enable-developer-extras", True)
            self.inspector = Inspector(self.web_view.get_web_inspector())
            self.inspector.set_title("WebSDK Inspector")
        else:
            self.web_view = Browser()

        self.open("file:///%s/app/static/init.html" % self.bundle_dir)
        self.set_canvas(self.web_view)
        self.web_view.show()
        self.waitforport()

    def _joined_cb(self, activity):
        """Joined a shared activity."""
        if not self._shared_activity:
            return
        if len(self._shared_activity.get_joined_buddies())==1:
            print "We are alone"

    def __start_button_cb(self, widget):
        self.open("http://localhost:%s/" % self.port)
        return True

    def __debug_button_cb(self, widget):
        self.open("http://localhost:%s/debug" % self.port)
        return True

    @yieldsleep
    def waitforport(self):
        while 1:
            if isOpen("127.0.0.1", self.port):
                if self._shared_activity: # we are shared
                    self.open("http://localhost:%s/" % self.port)
                else:
                    self.open("http://localhost:%s/" % self.port)
                break
            else:
                yield(1)

    def open(self, url):
        if not USE_GECKO:
            self.web_view.open(url)
        else: #use webkit
            self.web_view.load_uri(url)

    def can_close(self):
        self.open("http://localhost:%s/shutdown" % self.port)
        return True

    def start_server(self):
        self.serverprocess = subprocess.Popen(("python", "app/app.py", str(self.port)))
        if self._shared_activity:
            self.share_server()


    def share_server(self):
        # Make a tube for it
        chan = self._shared_activity.telepathy_tubes_chan
        iface = chan[telepathy.CHANNEL_TYPE_TUBES]
        self.httpd_tube_id = iface.OfferStreamTube(
            READ_STREAM_SERVICE,
            {},
            telepathy.SOCKET_ADDRESS_TYPE_IPV4,
            ('127.0.0.1', dbus.UInt16(self.port)),
            telepathy.SOCKET_ACCESS_CONTROL_LOCALHOST,
            0)
        return True