#!/usr/bin/python -t
# -*- tab-width: 4; indent-tabs-mode: t -*- 

import dbus
import dbus.service
import dbus.glib

import pygtk
pygtk.require('2.0')
import gtk, gobject

import sys

try:
	import activity
	from Group import *
	from StreamReader import *
	from StreamWriter import *
	from sugar_globals import *
except ImportError:
	from sugar import activity
	from sugar.Group import *
	from sugar.sugar_globals import *

import richtext

CHAT_SERVICE_TYPE = "_olpc_chat._tcp"
CHAT_SERVICE_PORT = 6100

GROUP_CHAT_SERVICE_TYPE = "_olpc_group_chat._udp"
GROUP_CHAT_SERVICE_ADDRESS = "224.0.0.221"
GROUP_CHAT_SERVICE_PORT = 6200

class Chat(activity.Activity):
	def __init__(self, controller):
		self._controller = controller
		activity.Activity.__init__(self)

	def activity_on_connected_to_shell(self):
		self.activity_set_tab_text(self._act_name)
		self._plug = self.activity_get_gtk_plug()
		self._ui_setup(self._plug)
		self._plug.show_all()
		
	def _create_chat(self):
		chat_vbox = gtk.VBox()
		chat_vbox.set_spacing(6)

		sw = gtk.ScrolledWindow()
		sw.set_shadow_type(gtk.SHADOW_IN)
		sw.set_policy(gtk.POLICY_NEVER, gtk.POLICY_ALWAYS)
		self._chat_view = richtext.RichTextView()
		self._chat_view.connect("link-clicked", self.__link_clicked_cb)
		self._chat_view.set_editable(False)
		self._chat_view.set_cursor_visible(False)
		sw.add(self._chat_view)
		self._chat_view.show()
		chat_vbox.pack_start(sw)
		sw.show()

		chat_view_sw = gtk.ScrolledWindow()
		chat_view_sw.set_shadow_type(gtk.SHADOW_IN)
		chat_view_sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
		self._editor = richtext.RichTextView()
		self._editor.connect("key-press-event", self.__key_press_event_cb)
		self._editor.set_size_request(-1, 50)
		chat_view_sw.add(self._editor)
		self._editor.show()

		chat_vbox.pack_start(chat_view_sw, False)
		chat_view_sw.show()
		
		return chat_vbox, self._editor.get_buffer()

	def _ui_setup(self, base):
		vbox = gtk.VBox(False, 6)

		self._hbox = gtk.HBox(False, 12)
		self._hbox.set_border_width(12)

		[chat_vbox, buffer] = self._create_chat()
		self._hbox.pack_start(chat_vbox)
		chat_vbox.show()
		
		vbox.pack_start(self._hbox)
		self._hbox.show()

		toolbar = self._create_toolbar(buffer)
		vbox.pack_start(toolbar, False)
		toolbar.show()

		base.add(vbox)
		vbox.show()

	def __link_clicked_cb(self, view, address):
		self._browser_shell.open_browser(address)

	def __key_press_event_cb(self, text_view, event):
		if event.keyval == gtk.keysyms.Return:
			buf = text_view.get_buffer()
			
			serializer = richtext.RichTextSerializer()
			text = serializer.serialize(buf)
			self.send_message(text)

			buf.set_text("")
			buf.place_cursor(buf.get_start_iter())

			return True

	def _create_toolbar(self, rich_buf):
		toolbar = richtext.RichTextToolbar(rich_buf)

		item = gtk.MenuToolButton(None, "Links")
		item.set_menu(gtk.Menu())
		item.connect("show-menu", self.__show_link_menu_cb)
		toolbar.insert(item, -1)
		item.show()
		
		return toolbar

	def __link_activate_cb(self, item, link):
		buf = self._editor.get_buffer()
		buf.append_link(link['title'], link['address'])

	def __show_link_menu_cb(self, button):
		menu = gtk.Menu()
		
		links = self._browser_shell.get_links()

		for link in links:
			item = gtk.MenuItem(link['title'], False)
			item.connect("activate", self.__link_activate_cb, link)
			menu.append(item)
			item.show()
		
		button.set_menu(menu)
		
	def activity_on_close_from_user(self):
		print "act %d: in activity_on_close_from_user"%self.activity_get_id()
		self.activity_shutdown()

	def activity_on_lost_focus(self):
		print "act %d: in activity_on_lost_focus"%self.activity_get_id()

	def activity_on_got_focus(self):
		print "act %d: in activity_on_got_focus"%self.activity_get_id()
		self._controller.notify_activate(self)

	def recv_message(self, buddy, msg):
		self._insert_rich_message(buddy.get_nick_name(), msg)
		self._controller.notify_new_message(self, buddy)

	def _insert_rich_message(self, nick, msg):
		buffer = self._chat_view.get_buffer()
		aniter = buffer.get_end_iter()
		buffer.insert(aniter, nick + ": ")
		
		serializer = richtext.RichTextSerializer()
		serializer.deserialize(msg, buffer)

		aniter = buffer.get_end_iter()
		buffer.insert(aniter, "\n")

	def _local_message(self, success, text):
		if not success:
			message = "Error: %s\n" % text
			buffer = self._chat_view.get_buffer()
			aniter = buffer.get_end_iter()
			buffer.insert(aniter, message)
		else:
			nick = self._group.get_owner().get_nick_name()
			self._insert_rich_message(nick, text)

class BuddyChat(Chat):
	def __init__(self, controller, buddy):
		self._buddy = buddy
		self._act_name = "Chat: %s" % buddy.get_nick_name()
		Chat.__init__(self, controller)

	def _start(self):
		service_name = self._buddy.get_service_name()
		group = self._controller.get_group()
		self._stream_writer = StreamWriter(group, service_name)

	def activity_on_connected_to_shell(self):
		Chat.activity_on_connected_to_shell(self)
		self.activity_set_can_close(True)
		self.activity_set_tab_icon_name("im")
		self.activity_show_icon(True)
		self._start()
		
	def recv_message(self, sender, msg):
		Chat.recv_message(self, self._buddy, msg)

	def send_message(self, text):
		if len(text) > 0:
			success = self._stream_writer.write(text)
			self._local_message(success, text)

	def activity_on_close_from_user(self):
		Chat.activity_on_close_from_user(self)
		del self._chats[self._buddy]
			
class GroupChat(Chat):

	_MODEL_COL_NICK = 0
	_MODEL_COL_ICON = 1
	_MODEL_COL_BUDDY = 2
	
	def __init__(self):
		self._act_name = "Chat"
		self._chats = {}
		
		bus = dbus.SessionBus()
		proxy_obj = bus.get_object('com.redhat.Sugar.Browser', '/com/redhat/Sugar/Browser')
		self._browser_shell = dbus.Interface(proxy_obj, 'com.redhat.Sugar.BrowserShell')

		Chat.__init__(self, self)

	def get_group(self):
		return self._group

	def _start(self):
		self._group = LocalGroup()
		self._group.add_presence_listener(self._on_group_event)
		self._group.join()
		
		name = self._group.get_owner().get_service_name()
		service = Service(name, CHAT_SERVICE_TYPE, '', CHAT_SERVICE_PORT)
		self._buddy_reader = StreamReader(self._group, service)
		self._buddy_reader.set_listener(self._buddy_recv_message)
		service.register(self._group)

		service = Service(name, GROUP_CHAT_SERVICE_TYPE,
						  GROUP_CHAT_SERVICE_ADDRESS,
						  GROUP_CHAT_SERVICE_PORT, True)
		self._group.add_service(service)				  
		
		self._buddy_reader = StreamReader(self._group, service)
		self._buddy_reader.set_listener(self.recv_message)
		
		self._stream_writer = StreamWriter(self._group, service)

	def _create_sidebar(self):
		vbox = gtk.VBox(False, 6)
		
		label = gtk.Label("Who's around:")
		label.set_alignment(0.0, 0.5)
		vbox.pack_start(label, False)
		label.show()

		self._buddy_list_model = gtk.ListStore(gobject.TYPE_STRING, gtk.gdk.Pixbuf, gobject.TYPE_PYOBJECT)

		self._pixbuf_active_chat = gtk.gdk.pixbuf_new_from_file(data_dir + "/bubbleOutline.png")
		self._pixbuf_new_message = gtk.gdk.pixbuf_new_from_file(data_dir + "/bubble.png")

		sw = gtk.ScrolledWindow()
		sw.set_shadow_type(gtk.SHADOW_IN)
		sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)

		self._buddy_list_view = gtk.TreeView(self._buddy_list_model)
		self._buddy_list_view.set_headers_visible(False)
		self._buddy_list_view.connect("cursor-changed", self._on_buddyList_buddy_selected)
		self._buddy_list_view.connect("row-activated", self._on_buddyList_buddy_double_clicked)

		sw.set_size_request(120, -1)
		sw.add(self._buddy_list_view)
		self._buddy_list_view.show()

		renderer = gtk.CellRendererPixbuf()
		column = gtk.TreeViewColumn("", renderer, pixbuf=self._MODEL_COL_ICON)
		column.set_resizable(False)
		column.set_expand(False);
		self._buddy_list_view.append_column(column)

		renderer = gtk.CellRendererText()
		column = gtk.TreeViewColumn("", renderer, text=self._MODEL_COL_NICK)
		column.set_resizable(True)
		column.set_sizing("GTK_TREE_VIEW_COLUMN_GROW_ONLY");
		column.set_expand(True);
		self._buddy_list_view.append_column(column)

		vbox.pack_start(sw)
		sw.show()

		return vbox

	def _ui_setup(self, base):
		Chat._ui_setup(self, base)

		sidebar = self._create_sidebar()
		self._hbox.pack_start(sidebar, False)
		sidebar.show()
		self._plug.show_all()

	def activity_on_connected_to_shell(self):
		Chat.activity_on_connected_to_shell(self)
		
		self.activity_set_tab_icon_name("stock_help-chat")
		self.activity_show_icon(True)

		aniter = self._buddy_list_model.append(None)
		self._buddy_list_model.set(aniter, self._MODEL_COL_NICK, "Group",
				self._MODEL_COL_ICON, self._pixbuf_active_chat, self._MODEL_COL_BUDDY, None)
		self._start()

	def activity_on_disconnected_from_shell(self):
		Chat.activity_on_disconnected_from_shell(self)
		gtk.main_quit()

	def _on_buddyList_buddy_selected(self, widget, *args):
		(model, aniter) = widget.get_selection().get_selected()
		name = self._buddy_list_model.get(aniter, self._MODEL_COL_NICK)
		print "Selected %s" % name

	def _on_buddyList_buddy_double_clicked(self, widget, *args):
		""" Select the chat for this buddy or group """
		(model, aniter) = widget.get_selection().get_selected()
		chat = None
		buddy = self._buddy_list_model.get_value(aniter, self._MODEL_COL_BUDDY)
		if buddy and not self._chats.has_key(buddy):
			chat = BuddyChat(self, buddy)
			self._chats[buddy] = chat
			chat.activity_connect_to_shell()

	def _on_group_event(self, action, buddy):
		if buddy.get_nick_name() == self._group.get_owner().get_nick_name():
			# Do not show ourself in the buddy list
			pass
		elif action == BUDDY_JOIN:
			aniter = self._buddy_list_model.append(None)
			self._buddy_list_model.set(aniter, self._MODEL_COL_NICK, buddy.get_nick_name(),
					self._MODEL_COL_ICON, None, self._MODEL_COL_BUDDY, buddy)
		elif action == BUDDY_LEAVE:
			aniter = self._get_iter_for_buddy(buddy)
			if aniter:
				self._buddy_list_model.remove(aniter)

	def _get_iter_for_buddy(self, buddy):
		aniter = self._buddy_list_model.get_iter_first()
		while aniter:
			list_buddy = self._buddy_list_model.get_value(aniter, self._MODEL_COL_BUDDY)
			if buddy == list_buddy:
				return aniter
			aniter = self._buddy_list_model.iter_next(aniter)

	def notify_new_message(self, chat, buddy):
		aniter = self._get_iter_for_buddy(buddy)
		self._buddy_list_model.set(aniter, self._MODEL_COL_ICON, self._pixbuf_new_message)

	def notify_activate(self, chat):
		aniter = self._get_iter_for_buddy(buddy)
		self._buddy_list_model.set(aniter, self._MODEL_COL_ICON, self._pixbuf_active_chat)

	def send_message(self, text):
		if len(text) > 0:
			self._stream_writer.write(text)
		self._local_message(True, text)

	def recv_message(self, buddy, msg):
		if buddy:
			self._insert_rich_message(buddy.get_nick_name(), msg)
			self._controller.notify_new_message(self, None)

	def _buddy_recv_message(self, sender, msg):
		if self._chats.has_key[sender]:
			chat = BuddyChat(self, sender)
			self._chats[buddy] = chat
			chat.activity_connect_to_shell()
		chat.recv_message(sender, msg)

class ChatShell(dbus.service.Object):
	instance = None

	def get_instance():
		if not ChatShell.instance:
			ChatShell.instance = ChatShell()
		return ChatShell.instance
		
	get_instance = staticmethod(get_instance)

	def __init__(self):
		session_bus = dbus.SessionBus()
		bus_name = dbus.service.BusName('com.redhat.Sugar.Chat', bus=session_bus)
		object_path = '/com/redhat/Sugar/Chat'

		dbus.service.Object.__init__(self, bus_name, object_path)

	def open_group_chat(self):
		group_chat = GroupChat()
		group_chat.activity_connect_to_shell()

	@dbus.service.method('com.redhat.Sugar.ChatShell')
	def send_message(self, message):
		pass
		
def main():
	ChatShell.get_instance().open_group_chat()
	try:
		gtk.main()
	except KeyboardInterrupt:
		pass

if __name__ == "__main__":
	main()