import gtkgui_helpers
import dataforms_widget

import dialogs

from common import dataforms
from common import gajim
from common import xmpp

def describe_features(features):
	'''a human-readable description of the features that have been negotiated'''
	if features['logging'] == 'may':
		return _('- messages will be logged')
	elif features['logging'] == 'mustnot':
		return _('- messages will not be logged')

def show_sas_dialog(session, jid, sas, on_success):
	def success_cb(checked):
		on_success(checked)

	def failure_cb():
		session.cancelled_negotiation()

	dialogs.ConfirmationDialogCheck(_('''OK to continue with negotiation?'''),
		_('''You've begun an encrypted session with %s, but it can't be guaranteed that you're talking directly to the person you think you are.

You should speak with them directly (in person or on the phone) and confirm that their Short Authentication String is identical to this one: %s

Would you like to continue with the encrypted session?''') % (jid, sas),

		_('Yes, I verified the Short Authentication String'),
		on_response_ok=success_cb, on_response_cancel=failure_cb, is_modal=False)

class FeatureNegotiationWindow:
	'''FeatureNegotiotionWindow class'''
	def __init__(self, account, jid, session, form):
		self.account = account
		self.jid = jid
		self.form = form
		self.session = session

		self.xml = gtkgui_helpers.get_glade('data_form_window.glade', 'data_form_window')
		self.window = self.xml.get_widget('data_form_window')

		config_vbox = self.xml.get_widget('config_vbox')
		dataform = dataforms.ExtendForm(node = self.form)
		self.data_form_widget = dataforms_widget.DataFormWidget(dataform)
		self.data_form_widget.show()
		config_vbox.pack_start(self.data_form_widget)

		self.xml.signal_autoconnect(self)
		self.window.show_all()

	def on_ok_button_clicked(self, widget):
		acceptance = xmpp.Message(self.jid)
		acceptance.setThread(self.session.thread_id)
		feature = acceptance.NT.feature
		feature.setNamespace(xmpp.NS_FEATURE)

		form = self.data_form_widget.data_form
		form.setAttr('type', 'submit')

		feature.addChild(node=form)

		gajim.connections[self.account].send_stanza(acceptance)

		self.window.destroy()

	def on_cancel_button_clicked(self, widget):
		# XXX determine whether to reveal presence

		rejection = xmpp.Message(self.jid)
		rejection.setThread(self.session.thread_id)
		feature = rejection.NT.feature
		feature.setNamespace(xmpp.NS_FEATURE)

		x = xmpp.DataForm(typ='submit')
		x.addChild(node=xmpp.DataField('FORM_TYPE', value='urn:xmpp:ssn'))
		x.addChild(node=xmpp.DataField('accept', value='false', typ='boolean'))

		feature.addChild(node=x)

		# XXX optional <body/>

		gajim.connections[self.account].send_stanza(rejection)

		self.window.destroy()