# -*- coding:utf-8 -*-
## src/notify.py
##
## Copyright (C) 2005 Sebastian Estienne
## Copyright (C) 2005-2006 Andrew Sayman <lorien420 AT myrealbox.com>
## Copyright (C) 2005-2007 Nikos Kouremenos <kourem AT gmail.com>
## Copyright (C) 2005-2008 Yann Leboulanger <asterix AT lagaule.org>
## Copyright (C) 2006 Travis Shirk <travis AT pobox.com>
## Copyright (C) 2006-2008 Jean-Marie Traissard <jim AT lapin.org>
## Copyright (C) 2007 Julien Pivotto <roidelapluie AT gmail.com>
##                    Stephan Erb <steve-e AT h3c.de>
## Copyright (C) 2008 Brendan Taylor <whateley AT gmail.com>
##                    Jonathan Schleifer <js-gajim AT webkeks.org>
##
## This file is part of Gajim.
##
## Gajim 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; version 3 only.
##
## Gajim 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 Gajim. If not, see <http://www.gnu.org/licenses/>.
##

import os
import time
import dialogs
import gobject
import gtkgui_helpers
import gtk

from common import gajim
from common import helpers

from common import dbus_support
if dbus_support.supported:
	import dbus
	import dbus.glib


USER_HAS_PYNOTIFY = True # user has pynotify module
try:
	import pynotify
	pynotify.init('Gajim Notification')
except ImportError:
	USER_HAS_PYNOTIFY = False

if gajim.HAVE_INDICATOR:
	import indicate

def setup_indicator_server():
	server = indicate.indicate_server_ref_default()
	server.set_type('message.im')
	server.set_desktop_file('/usr/share/applications/gajim.desktop')
	server.connect('server-display', server_display)
	server.show()

def display(indicator, account, jid, msg_type):
	gajim.interface.handle_event(account, jid, msg_type)
	indicator.hide()

def server_display(server):
	win = gajim.interface.roster.window
	win.present()

def get_show_in_roster(event, account, contact, session=None):
	"""
	Return True if this event must be shown in roster, else False
	"""
	if event == 'gc_message_received':
		return True
	num = get_advanced_notification(event, account, contact)
	if num is not None:
		if gajim.config.get_per('notifications', str(num), 'roster') == 'yes':
			return True
		if gajim.config.get_per('notifications', str(num), 'roster') == 'no':
			return False
	if event == 'message_received':
		if session and session.control:
			return False
	return True

def get_show_in_systray(event, account, contact, type_=None):
	"""
	Return True if this event must be shown in systray, else False
	"""
	num = get_advanced_notification(event, account, contact)
	if num is not None:
		if gajim.config.get_per('notifications', str(num), 'systray') == 'yes':
			return True
		if gajim.config.get_per('notifications', str(num), 'systray') == 'no':
			return False
	if type_ == 'printed_gc_msg' and not gajim.config.get(
	'notify_on_all_muc_messages'):
		# it's not an highlighted message, don't show in systray
		return False
	return gajim.config.get('trayicon_notification_on_events')

def get_advanced_notification(event, account, contact):
	"""
	Returns the number of the first (top most) advanced notification else None
	"""
	num = 0
	notif = gajim.config.get_per('notifications', str(num))
	while notif:
		recipient_ok = False
		status_ok = False
		tab_opened_ok = False
		# test event
		if gajim.config.get_per('notifications', str(num), 'event') == event:
			# test recipient
			recipient_type = gajim.config.get_per('notifications', str(num),
				'recipient_type')
			recipients = gajim.config.get_per('notifications', str(num),
				'recipients').split()
			if recipient_type == 'all':
				recipient_ok = True
			elif recipient_type == 'contact' and contact.jid in recipients:
				recipient_ok = True
			elif recipient_type == 'group':
				for group in contact.groups:
					if group in contact.groups:
						recipient_ok = True
						break
		if recipient_ok:
			# test status
			our_status = gajim.SHOW_LIST[gajim.connections[account].connected]
			status = gajim.config.get_per('notifications', str(num), 'status')
			if status == 'all' or our_status in status.split():
				status_ok = True
		if status_ok:
			# test window_opened
			tab_opened = gajim.config.get_per('notifications', str(num),
				'tab_opened')
			if tab_opened == 'both':
				tab_opened_ok = True
			else:
				chat_control = helpers.get_chat_control(account, contact)
				if (chat_control and tab_opened == 'yes') or (not chat_control and \
				tab_opened == 'no'):
					tab_opened_ok = True
		if tab_opened_ok:
			return num

		num += 1
		notif = gajim.config.get_per('notifications', str(num))

def notify(event, jid, account, parameters, advanced_notif_num=None):
	"""
	Check what type of notifications we want, depending on basic and the advanced
	configuration of notifications and do these notifications; advanced_notif_num
	holds the number of the first (top most) advanced notification
	"""
	# First, find what notifications we want
	do_popup = False
	do_sound = False
	do_cmd = False
	if event == 'status_change':
		new_show = parameters[0]
		status_message = parameters[1]
		# Default: No popup for status change
	elif event == 'contact_connected':
		status_message = parameters
		j = gajim.get_jid_without_resource(jid)
		server = gajim.get_server_from_jid(j)
		account_server = account + '/' + server
		block_transport = False
		if account_server in gajim.block_signed_in_notifications and \
		gajim.block_signed_in_notifications[account_server]:
			block_transport = True
		if helpers.allow_showing_notification(account, 'notify_on_signin') and \
		not gajim.block_signed_in_notifications[account] and not block_transport:
			do_popup = True
		if gajim.config.get_per('soundevents', 'contact_connected',
		'enabled') and not gajim.block_signed_in_notifications[account] and \
		not block_transport:
			do_sound = True
	elif event == 'contact_disconnected':
		status_message = parameters
		if helpers.allow_showing_notification(account, 'notify_on_signout'):
			do_popup = True
		if gajim.config.get_per('soundevents', 'contact_disconnected',
			'enabled'):
			do_sound = True
	elif event == 'new_message':
		message_type = parameters[0]
		is_first_message = parameters[1]
		nickname = parameters[2]
		if gajim.config.get('notification_preview_message'):
			message = parameters[3]
			if message.startswith('/me ') or message.startswith('/me\n'):
				message = '* ' + nickname + message[3:]
		else:
			# We don't want message preview, do_preview = False
			message = ''
		focused = parameters[4]
		if helpers.allow_showing_notification(account, 'notify_on_new_message',
		advanced_notif_num, is_first_message):
			do_popup = True
		if is_first_message and helpers.allow_sound_notification(account,
		'first_message_received', advanced_notif_num):
			do_sound = True
		elif not is_first_message and focused and \
		helpers.allow_sound_notification(account, 'next_message_received_focused',
		advanced_notif_num):
			do_sound = True
		elif not is_first_message and not focused and \
		helpers.allow_sound_notification(account,
		'next_message_received_unfocused', advanced_notif_num):
			do_sound = True
	else:
		print '*Event not implemeted yet*'

	if advanced_notif_num is not None and gajim.config.get_per('notifications',
	str(advanced_notif_num), 'run_command'):
		do_cmd = True

	# Do the wanted notifications
	if do_popup:
		if event in ('contact_connected', 'contact_disconnected',
		'status_change'): # Common code for popup for these three events
			if event == 'contact_disconnected':
				show_image = 'offline.png'
				suffix = '_notif_size_bw'
			else: #Status Change or Connected
				# FIXME: for status change,
				# we don't always 'online.png', but we
				# first need 48x48 for all status
				show_image = 'online.png'
				suffix = '_notif_size_colored'
			transport_name = gajim.get_transport_name_from_jid(jid)
			img_path = None
			if transport_name:
				img_path = os.path.join(helpers.get_transport_path(transport_name),
					'48x48', show_image)
			if not img_path or not os.path.isfile(img_path):
				iconset = gajim.config.get('iconset')
				img_path = os.path.join(helpers.get_iconset_path(iconset), '48x48',
					show_image)
			path = gtkgui_helpers.get_path_to_generic_or_avatar(img_path, jid=jid,
				suffix=suffix)
			if event == 'status_change':
				title = _('%(nick)s Changed Status') % \
					{'nick': gajim.get_name_from_jid(account, jid)}
				text = _('%(nick)s is now %(status)s') % \
					{'nick': gajim.get_name_from_jid(account, jid),\
					'status': helpers.get_uf_show(gajim.SHOW_LIST[new_show])}
				if status_message:
					text = text + " : " + status_message
				popup(_('Contact Changed Status'), jid, account,
					path_to_image=path, title=title, text=text)
			elif event == 'contact_connected':
				title = _('%(nickname)s Signed In') % \
					{'nickname': gajim.get_name_from_jid(account, jid)}
				text = ''
				if status_message:
					text = status_message
				popup(_('Contact Signed In'), jid, account,
					path_to_image=path, title=title, text=text)
			elif event == 'contact_disconnected':
				title = _('%(nickname)s Signed Out') % \
					{'nickname': gajim.get_name_from_jid(account, jid)}
				text = ''
				if status_message:
					text = status_message
				popup(_('Contact Signed Out'), jid, account,
					path_to_image=path, title=title, text=text)
		elif event == 'new_message':
			if message_type == 'normal': # single message
				event_type = _('New Single Message')
				img_name = 'gajim-single_msg_recv'
				title = _('New Single Message from %(nickname)s') % \
					{'nickname': nickname}
				text = message
			elif message_type == 'pm': # private message
				event_type = _('New Private Message')
				room_name = gajim.get_nick_from_jid(jid)
				img_name = 'gajim-priv_msg_recv'
				title = _('New Private Message from group chat %s') % room_name
				if message:
					text = _('%(nickname)s: %(message)s') % {'nickname': nickname,
						'message': message}
				else:
					text = _('Messaged by %(nickname)s') % {'nickname': nickname}

			else: # chat message
				event_type = _('New Message')
				img_name = 'gajim-chat_msg_recv'
				title = _('New Message from %(nickname)s') % \
					{'nickname': nickname}
				text = message
			img_path = gtkgui_helpers.get_icon_path(img_name, 48)
			popup(event_type, jid, account, message_type,
				path_to_image=img_path, title=title, text=text)

	if do_sound:
		snd_file = None
		snd_event = None # If not snd_file, play the event
		if event == 'new_message':
			if advanced_notif_num is not None and gajim.config.get_per(
			'notifications', str(advanced_notif_num), 'sound') == 'yes':
				snd_file = gajim.config.get_per('notifications',
					str(advanced_notif_num), 'sound_file')
			elif advanced_notif_num is not None and gajim.config.get_per(
			'notifications', str(advanced_notif_num), 'sound') == 'no':
				pass # do not set snd_event
			elif is_first_message:
				snd_event = 'first_message_received'
			elif focused:
				snd_event = 'next_message_received_focused'
			else:
				snd_event = 'next_message_received_unfocused'
		elif event in ('contact_connected', 'contact_disconnected'):
			snd_event = event
		if snd_file:
			helpers.play_sound_file(snd_file)
		if snd_event:
			helpers.play_sound(snd_event)

	if do_cmd:
		command = gajim.config.get_per('notifications', str(advanced_notif_num),
			'command')
		try:
			helpers.exec_command(command)
		except Exception:
			pass

def popup(event_type, jid, account, msg_type='', path_to_image=None, title=None,
		text=None):
	"""
	Notify a user of an event. It first tries to a valid implementation of
	the Desktop Notification Specification. If that fails, then we fall back to
	the older style PopupNotificationWindow method
	"""
	# default image
	if not path_to_image:
		path_to_image = gtkgui_helpers.get_icon_path('gajim-chat_msg_recv', 48)

	if gajim.HAVE_INDICATOR and event_type in (_('New Message'),
	_('New Single Message'), _('New Private Message')):
		indicator = indicate.Indicator()
		indicator.set_property('subtype', 'im')
		indicator.set_property('sender', jid)
		indicator.set_property('body', text)
		indicator.set_property_time('time', time.time())
		pixbuf = gtk.gdk.pixbuf_new_from_file(path_to_image)
		indicator.set_property_icon('icon', pixbuf)
		indicator.connect('user-display', display, account, jid, msg_type)
		indicator.show()

	# Try to show our popup via D-Bus and notification daemon
	if gajim.config.get('use_notif_daemon') and dbus_support.supported:
		try:
			DesktopNotification(event_type, jid, account, msg_type,
				path_to_image, title, gobject.markup_escape_text(text))
			return	# sucessfully did D-Bus Notification procedure!
		except dbus.DBusException, e:
			# Connection to D-Bus failed
			gajim.log.debug(str(e))
		except TypeError, e:
			# This means that we sent the message incorrectly
			gajim.log.debug(str(e))

	# Ok, that failed. Let's try pynotify, which also uses notification daemon
	if gajim.config.get('use_notif_daemon') and USER_HAS_PYNOTIFY:
		if not text and event_type == 'new_message':
			# empty text for new_message means do_preview = False
			# -> default value for text
			_text = gobject.markup_escape_text(
				gajim.get_name_from_jid(account, jid))
		else:
			_text = gobject.markup_escape_text(text)

		if not title:
			_title = ''
		else:
			_title = title

		notification = pynotify.Notification(_title, _text)
		timeout = gajim.config.get('notification_timeout') * 1000 # make it ms
		notification.set_timeout(timeout)

		notification.set_category(event_type)
		notification.set_data('event_type', event_type)
		notification.set_data('jid', jid)
		notification.set_data('account', account)
		notification.set_data('msg_type', msg_type)
		notification.set_property('icon-name', path_to_image)
		if 'actions' in pynotify.get_server_caps():
			notification.add_action('default', 'Default Action',
				on_pynotify_notification_clicked)

		try:
			notification.show()
			return
		except gobject.GError, e:
			# Connection to notification-daemon failed, see #2893
			gajim.log.debug(str(e))

	# Either nothing succeeded or the user wants old-style notifications
	instance = dialogs.PopupNotificationWindow(event_type, jid, account,
		msg_type, path_to_image, title, text)
	gajim.interface.roster.popup_notification_windows.append(instance)

def on_pynotify_notification_clicked(notification, action):
	jid = notification.get_data('jid')
	account = notification.get_data('account')
	msg_type = notification.get_data('msg_type')

	notification.close()
	gajim.interface.handle_event(account, jid, msg_type)

class NotificationResponseManager:
	"""
	Collect references to pending DesktopNotifications and manages there
	signalling. This is necessary due to a bug in DBus where you can't remove a
	signal from an interface once it's connected
	"""

	def __init__(self):
		self.pending = {}
		self.received = []
		self.interface = None

	def attach_to_interface(self):
		if self.interface is not None:
			return
		self.interface = dbus_support.get_notifications_interface()
		self.interface.connect_to_signal('ActionInvoked', self.on_action_invoked)
		self.interface.connect_to_signal('NotificationClosed', self.on_closed)

	def on_action_invoked(self, id_, reason):
		self.received.append((id_, time.time(), reason))
		if id_ in self.pending:
			notification = self.pending[id_]
			notification.on_action_invoked(id_, reason)
			del self.pending[id_]
		if len(self.received) > 20:
			curt = time.time()
			for rec in self.received:
				diff = curt - rec[1]
				if diff > 10:
					self.received.remove(rec)

	def on_closed(self, id_, reason=None):
		if id_ in self.pending:
			del self.pending[id_]

	def add_pending(self, id_, object_):
		# Check to make sure that we handle an event immediately if we're adding
		# an id that's already been triggered
		for rec in self.received:
			if rec[0] == id_:
				object_.on_action_invoked(id_, rec[2])
				self.received.remove(rec)
				return
		if id_ not in self.pending:
			# Add it
			self.pending[id_] = object_
		else:
			# We've triggered an event that has a duplicate ID!
			gajim.log.debug('Duplicate ID of notification. Can\'t handle this.')

notification_response_manager = NotificationResponseManager()

class DesktopNotification:
	"""
	A DesktopNotification that interfaces with D-Bus via the Desktop Notification
	specification
	"""

	def __init__(self, event_type, jid, account, msg_type='',
		path_to_image=None, title=None, text=None):
		self.path_to_image = path_to_image
		self.event_type = event_type
		self.title = title
		self.text = text
		# 0.3.1 is the only version of notification daemon that has no way
		# to determine which version it is. If no method exists, it means
		# they're using that one.
		self.default_version = [0, 3, 1]
		self.account = account
		self.jid = jid
		self.msg_type = msg_type

		# default value of text
		if not text and event_type == 'new_message':
			# empty text for new_message means do_preview = False
			self.text = gajim.get_name_from_jid(account, jid)

		if not title:
			self.title = event_type # default value

		if event_type == _('Contact Signed In'):
			ntype = 'presence.online'
		elif event_type == _('Contact Signed Out'):
			ntype = 'presence.offline'
		elif event_type in (_('New Message'), _('New Single Message'),
			_('New Private Message')):
			ntype = 'im.received'
		elif event_type == _('File Transfer Request'):
			ntype = 'transfer'
		elif event_type == _('File Transfer Error'):
			ntype = 'transfer.error'
		elif event_type in (_('File Transfer Completed'),
		_('File Transfer Stopped')):
			ntype = 'transfer.complete'
		elif event_type == _('New E-mail'):
			ntype = 'email.arrived'
		elif event_type == _('Groupchat Invitation'):
			ntype = 'im.invitation'
		elif event_type == _('Contact Changed Status'):
			ntype = 'presence.status'
		elif event_type == _('Connection Failed'):
			ntype = 'connection.failed'
		elif event_type == _('Subscription request'):
			ntype = 'subscription.request'
		elif event_type == _('Unsubscribed'):
			ntype = 'unsubscribed'
		else:
			# default failsafe values
			self.path_to_image = gtkgui_helpers.get_icon_path(
				'gajim-chat_msg_recv', 48)
			ntype = 'im' # Notification Type

		self.notif = dbus_support.get_notifications_interface(self)
		if self.notif is None:
			raise dbus.DBusException('unable to get notifications interface')
		self.ntype = ntype

		if self.kde_notifications:
			self.attempt_notify()
		else:
			self.capabilities = self.notif.GetCapabilities()
			if self.capabilities is None:
				self.capabilities = ['actions']
			self.get_version()

	def attempt_notify(self):
		timeout = gajim.config.get('notification_timeout') # in seconds
		ntype = self.ntype
		if self.kde_notifications:
			notification_text = ('<html><img src="%(image)s" align=left />' \
				'%(title)s<br/>%(text)s</html>') % {'title': self.title,
				'text': self.text, 'image': self.path_to_image}
			gajim_icon = gtkgui_helpers.get_icon_path('gajim', 48)
			self.notif.Notify(
				dbus.String(_('Gajim')),			# app_name (string)
				dbus.UInt32(0),						# replaces_id (uint)
				ntype,									# event_id (string)
				dbus.String(gajim_icon),			# app_icon (string)
				dbus.String(''),						# summary (string)
				dbus.String(notification_text),	# body (string)
				# actions (stringlist)
				(dbus.String('default'), dbus.String(self.event_type),
					dbus.String('ignore'), dbus.String(_('Ignore'))),
				[],										# hints (not used in KDE yet)
				dbus.UInt32(timeout*1000),			# timeout (int), in ms
				reply_handler=self.attach_by_id,
				error_handler=self.notify_another_way)
			return
		version = self.version
		if version[:2] == [0, 2]:
			actions = {}
			if 'actions' in self.capabilities:
				actions = {'default': 0}
			try:
				self.notif.Notify(
					dbus.String(_('Gajim')),
					dbus.String(self.path_to_image),
					dbus.UInt32(0),
					ntype,
					dbus.Byte(0),
					dbus.String(self.title),
					dbus.String(self.text),
					[dbus.String(self.path_to_image)],
					actions,
					[''],
					True,
					dbus.UInt32(timeout),
					reply_handler=self.attach_by_id,
					error_handler=self.notify_another_way)
			except AttributeError:
				version = [0, 3, 1] # we're actually dealing with the newer version
		if version > [0, 3]:
			if gajim.interface.systray_enabled and \
			gajim.config.get('attach_notifications_to_systray'):
				status_icon = gajim.interface.systray.status_icon
				x, y, width, height = status_icon.get_geometry()[1]
				pos_x = x + (width / 2)
				pos_y = y + (height / 2)
				hints = {'x': pos_x, 'y': pos_y}
			else:
				hints = {}
			if version >= [0, 3, 2]:
				hints['urgency'] = dbus.Byte(0) # Low Urgency
				hints['category'] = dbus.String(ntype)
				# it seems notification-daemon doesn't like empty text
				if self.text:
					text = self.text
				else:
					text = ' '
				actions = ()
				if 'actions' in self.capabilities:
					actions = (dbus.String('default'), dbus.String(self.event_type))
				self.notif.Notify(
					dbus.String(_('Gajim')),
					dbus.UInt32(0), # this notification does not replace other
					dbus.String(self.path_to_image),
					dbus.String(self.title),
					dbus.String(text),
					actions,
					hints,
					dbus.UInt32(timeout*1000),
					reply_handler=self.attach_by_id,
					error_handler=self.notify_another_way)
			else:
				self.notif.Notify(
					dbus.String(_('Gajim')),
					dbus.String(self.path_to_image),
					dbus.UInt32(0),
					dbus.String(self.title),
					dbus.String(self.text),
					dbus.String(''),
					hints,
					dbus.UInt32(timeout*1000),
					reply_handler=self.attach_by_id,
					error_handler=self.notify_another_way)

	def attach_by_id(self, id_):
		self.id = id_
		notification_response_manager.attach_to_interface()
		notification_response_manager.add_pending(self.id, self)

	def notify_another_way(self,e):
		gajim.log.debug(str(e))
		gajim.log.debug('Need to implement a new way of falling back')

	def on_action_invoked(self, id_, reason):
		if self.notif is None:
			return
		self.notif.CloseNotification(dbus.UInt32(id_))
		self.notif = None

		if reason == 'ignore':
			return

		gajim.interface.handle_event(self.account, self.jid, self.msg_type)

	def version_reply_handler(self, name, vendor, version, spec_version=None):
		if spec_version:
			version = spec_version
		elif vendor == 'Xfce' and version.startswith('0.1.0'):
			version = '0.9'
		version_list = version.split('.')
		self.version = []
		try:
			while len(version_list):
				self.version.append(int(version_list.pop(0)))
		except ValueError:
			self.version_error_handler_3_x_try(None)
		self.attempt_notify()

	def get_version(self):
		self.notif.GetServerInfo(
			reply_handler=self.version_reply_handler,
			error_handler=self.version_error_handler_2_x_try)

	def version_error_handler_2_x_try(self, e):
		self.notif.GetServerInformation(reply_handler=self.version_reply_handler,
			error_handler=self.version_error_handler_3_x_try)

	def version_error_handler_3_x_try(self, e):
		self.version = self.default_version
		self.attempt_notify()

# vim: se ts=3: