import pygtk
pygtk.require('2.0')
import gtk
import pango
import dbus
import cgi
import xml.sax.saxutils
import gobject
import socket

import dbus_bindings
from google import google
from sugar.presence.PresenceService import PresenceService

_BROWSER_ACTIVITY_TYPE = "_web_olpc._udp"

_COLUMN_TITLE = 0
_COLUMN_ADDRESS = 1
_COLUMN_SUBTITLE = 2
_COLUMN_SERVICE = 3

class SearchHelper(object):
	def __init__(self, activity_id):
		self.search_id = activity_id
		self.found = False

class SearchModel(gtk.ListStore):
	def __init__(self, activities_model, search_text):
		gtk.ListStore.__init__(self, gobject.TYPE_STRING, gobject.TYPE_STRING,
				gobject.TYPE_STRING, gobject.TYPE_PYOBJECT)
		success = False

		for row in activities_model:
			title = row[_COLUMN_TITLE]
			address = row[_COLUMN_ADDRESS]
			if title.find(search_text) >= 0 or address.find(search_text) >= 0:
				self.append([ title, address, row[_COLUMN_SUBTITLE], row[_COLUMN_SERVICE] ])

		google.LICENSE_KEY = '1As9KaJQFHIJ1L0W5EZPl6vBOFvh/Vaf'
		try:
			data = google.doGoogleSearch(search_text)
			success = True
		except socket.gaierror, exc:
			if exc[0] == -3:	# Temporary failure in name resolution
				errdlg = gtk.MessageDialog(None, gtk.DIALOG_MODAL, gtk.MESSAGE_INFO,
					gtk.BUTTONS_OK, "There appears to be no network connection.")
				errdlg.connect("response", lambda d, e: d.destroy())
				errdlg.connect("close", lambda d, e: d.destroy())
				errdlg.show()

		if success == True:
			for result in data.results:
				title = result.title
				
				# FIXME what tags should we actually strip?
				title = title.replace('<b>', '') 
				title = title.replace('</b>', '')

				# FIXME I'm sure there is a better way to
				# unescape these.
				title = title.replace('&quot;', '"')
				title = title.replace('&amp;', '&')
				
				self.append([ title, result.URL, None, None ])

class ActivitiesModel(gtk.ListStore):
	def __init__(self):
		gtk.ListStore.__init__(self, gobject.TYPE_STRING, gobject.TYPE_STRING,
				gobject.TYPE_STRING, gobject.TYPE_PYOBJECT)

	def _filter_dupe_activities(self, model, path, it, user_data):
		"""Search the list of list rows for an existing service that
		has the activity ID we're looking for."""
		helper = user_data
		(service, ) = model.get(it, _COLUMN_SERVICE)
		if not service:
			return False
		if service.get_activity_id() == helper.search_id:
			helper.found = True
			return True
		return False
	
	def add_activity(self, buddy, service):
		# Web Activity check
		activity_id = service.get_activity_id()
		if activity_id is None:
			return
		# Don't show dupes
		helper = SearchHelper(activity_id)
		self.foreach(self._filter_dupe_activities, helper)
		if helper.found == True:
			return

		# Only accept browser activities for now
		if service.get_type() == _BROWSER_ACTIVITY_TYPE:
			escaped_title = service.get_one_property('Title')
			escaped_uri = service.get_one_property('URI')
			if escaped_title and escaped_uri:
				title = xml.sax.saxutils.unescape(escaped_title)
				address = xml.sax.saxutils.unescape(escaped_uri)
				subtitle = 'Shared by %s' % buddy.get_nick_name()
				self.append([ title, address, subtitle, service ])

class ActivitiesView(gtk.TreeView):
	def __init__(self, activity_controller, model):
		gtk.TreeView.__init__(self, model)

		self._owner = None
		self._activity_controller = activity_controller

		self.set_headers_visible(False)
		
		theme = gtk.icon_theme_get_default()
		size = 48
		self._web_pixbuf = theme.load_icon('emblem-web', size, 0)
		self._share_pixbuf = theme.load_icon('emblem-people', size, 0)

		column = gtk.TreeViewColumn('')
		self.append_column(column)

		cell = gtk.CellRendererPixbuf()
		column.pack_start(cell, False)
		column.set_cell_data_func(cell, self._icon_cell_data_func)

		cell = gtk.CellRendererText()
		column.pack_start(cell)
		column.set_cell_data_func(cell, self._cell_data_func)
		
		self.connect('row-activated', self._row_activated_cb)
		
	def _icon_cell_data_func(self, column, cell, model, it):
		if model.get_value(it, _COLUMN_SERVICE) == None:
			cell.set_property('pixbuf', self._web_pixbuf)
		else:
			cell.set_property('pixbuf', self._share_pixbuf)
	
	def _cell_data_func(self, column, cell, model, it):
		title = model.get_value(it, _COLUMN_TITLE)
		subtitle = model.get_value(it, _COLUMN_SUBTITLE)
		if subtitle is None:
			subtitle = model.get_value(it, _COLUMN_ADDRESS)

		markup = '<big><b>' + cgi.escape(title) + '</b></big>' 
		markup += '\n' + cgi.escape(subtitle)
		
		cell.set_property('markup', markup)
		cell.set_property('ellipsize', pango.ELLIPSIZE_END)

	def set_owner(self, owner):
		self._owner = owner

	def _row_activated_cb(self, treeview, path, column):	
		bus = dbus.SessionBus()
		proxy_obj = bus.get_object('com.redhat.Sugar.Browser', '/com/redhat/Sugar/Browser')
		browser_shell = dbus.Interface(proxy_obj, 'com.redhat.Sugar.BrowserShell')

		model = self.get_model() 
		address = model.get_value(model.get_iter(path), _COLUMN_ADDRESS)
		service = model.get_value(model.get_iter(path), _COLUMN_SERVICE)

		print 'Activated row %s' % address

		if service is None:
			browser_shell.open_browser(address)
			return

		if not self._owner:
			raise RuntimeError("We don't have an owner yet!")
			
		# If the activity is already started, switch to it
		service_act_id = service.get_activity_id()
		if service_act_id and self._activity_controller.have_activity(service_act_id):
			self._activity_controller.switch_to_activity(service_act_id)
			return

		# Start a new activity
		serialized_service = service.serialize(self._owner)
		try:
			browser_shell.open_browser(address, serialized_service)
		except dbus_bindings.DBusException, exc:
			pass
			
class StartPage(gtk.HBox):
	def __init__(self, activity_controller, ac_signal_object):
		gtk.HBox.__init__(self)

		self._ac_signal_object = ac_signal_object
		self._ac_signal_object.connect("local-activity-started",
				self._on_local_activity_started_cb)
		self._ac_signal_object.connect("local-activity-ended",
				self._on_local_activity_ended_cb)

		self._pservice = PresenceService.get_instance()
		self._pservice.connect("activity-announced", self._on_activity_announced_cb)
		self._pservice.connect("new-service-adv", self._on_new_service_adv_cb)
		self._pservice.connect("buddy-appeared", self._on_buddy_appeared_cb)
		self._pservice.connect("buddy-disappeared", self._on_buddy_disappeared_cb)
		self._pservice.start()
		self._pservice.track_service_type(_BROWSER_ACTIVITY_TYPE)
		if self._pservice.get_owner():
			self._on_buddy_appeared_cb(self._pservice, self._pservice.get_owner())

		vbox = gtk.VBox()

		search_box = gtk.HBox(False, 6)
		search_box.set_border_width(24)
		
		self._search_entry = gtk.Entry()
		self._search_entry.connect('activate', self._search_entry_activate_cb)
		search_box.pack_start(self._search_entry)
		self._search_entry.show()
		
		search_button = gtk.Button("Search")
		search_button.connect('clicked', self._search_button_clicked_cb)
		search_box.pack_start(search_button, False)
		search_button.show()

		vbox.pack_start(search_box, False, True)
		search_box.show()

		exp_space = gtk.Label('')
		vbox.pack_start(exp_space)
		exp_space.show()
				
		self.pack_start(vbox)
		vbox.show()

		vbox = gtk.VBox()

		self._search_close_box = gtk.HBox()
		
		self._search_close_label = gtk.Label()
		self._search_close_label.set_alignment(0.0, 0.5)
		self._search_close_box.pack_start(self._search_close_label)
		self._search_close_label.show()

		close_image = gtk.Image()
		close_image.set_from_stock (gtk.STOCK_CLOSE, gtk.ICON_SIZE_MENU)
		close_image.show()

		search_close_button = gtk.Button()
		rcstyle = gtk.RcStyle();
		rcstyle.xthickness = rcstyle.ythickness = 0;
		search_close_button.modify_style (rcstyle);
		search_close_button.add(close_image)
		search_close_button.set_relief(gtk.RELIEF_NONE)
		search_close_button.set_focus_on_click(False)
		search_close_button.connect("clicked", self.__search_close_button_clicked_cb)

		self._search_close_box.pack_start(search_close_button, False)
		search_close_button.show()
		
		vbox.pack_start(self._search_close_box, False)

		sw = gtk.ScrolledWindow()
		sw.set_size_request(320, -1)
		sw.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)

		self._activities_model = ActivitiesModel()

		owner = self._pservice.get_owner()
		self._activities = ActivitiesView(activity_controller, self._activities_model)
		sw.add(self._activities)
		self._activities.show()

		vbox.pack_start(sw)
		sw.show()
		
		self.pack_start(vbox)
		vbox.show()
		
	def __search_close_button_clicked_cb(self, button):
		self._search(None)

	def _on_local_activity_started_cb(self, helper, activity_container, activity_id):
		print "new local activity %s" % activity_id

	def _on_local_activity_ended_cb(self, helper, activity_container, activity_id):
		print "local activity %s disappeared" % activity_id

	def _on_new_service_adv_cb(self, pservice, activity_id, short_stype):
		if activity_id:
			self._pservice.track_service_type(short_stype)

	def _on_buddy_appeared_cb(self, pservice, buddy):
		if buddy.is_owner():
			self._activities.set_owner(buddy)

	def _on_buddy_disappeared_cb(self, pservice, buddy):	
		if buddy.is_owner():
			self._activities.set_owner(None)

	def _on_activity_announced_cb(self, pservice, service, buddy):
		print "Found new activity service (activity %s of type %s)" % (service.get_activity_id(), service.get_type())
		self._activities_model.add_activity(buddy, service)
		if self._activities.get_model() != self._activities_model:
			self._search(self._last_search)

	def _search_entry_activate_cb(self, entry):
		self._search()
		self._search_entry.set_text('')
		
	def _search_button_clicked_cb(self, button):
		self._search()
		self._search_entry.set_text('')

	def _search(self, text = None):
		if text == None:
			text = self._search_entry.get_text()

		if text == None or len(text) == 0:
			self._activities.set_model(self._activities_model)
			self._search_close_box.hide()
		else:
			search_model = SearchModel(self._activities_model, text)
			self._activities.set_model(search_model)

			self._search_close_label.set_text('Search for %s' % (text))
			self._search_close_box.show()

		self._last_search = text