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#!/usr/bin/env python3
import io
import logging
import qrcode
from typing import Dict, Callable
from slixmpp import JID, InvalidJID
from poezio import windows
from poezio.tabs import Tab
from poezio.core.structs import Command
from poezio.decorators import command_args_parser
from poezio.plugin import BasePlugin
from poezio.theming import get_theme, to_curses_attr
from poezio.windows.base_wins import Win
log = logging.getLogger(__name__)
class QrWindow(Win):
__slots__ = ('qr', 'invert', 'inverted')
str_invert = " Invert "
str_close = " Close "
def __init__(self, qr: str) -> None:
self.qr = qr
self.invert = True
self.inverted = True
def refresh(self) -> None:
self._win.erase()
# draw QR code
code = qrcode.QRCode()
code.add_data(self.qr)
out = io.StringIO()
code.print_ascii(out, invert=self.inverted)
self.addstr(" " + self.qr + "\n")
self.addstr(out.getvalue(), to_curses_attr((15, 0)))
self.addstr(" ")
col = to_curses_attr(get_theme().COLOR_TAB_NORMAL)
if self.invert:
self.addstr(self.str_invert, col)
else:
self.addstr(self.str_invert)
self.addstr(" ")
if self.invert:
self.addstr(self.str_close)
else:
self.addstr(self.str_close, col)
self._refresh()
def toggle_choice(self) -> None:
self.invert = not self.invert
def engage(self) -> bool:
if self.invert:
self.inverted = not self.inverted
return False
else:
return True
class QrTab(Tab):
plugin_commands = {} # type: Dict[str, Command]
plugin_keys = {} # type: Dict[str, Callable]
def __init__(self, core, qr):
Tab.__init__(self, core)
self.state = 'highlight'
self.text = qr
self._name = qr
self.topic_win = windows.Topic()
self.topic_win.set_message(qr)
self.qr_win = QrWindow(qr)
self.help_win = windows.HelpText(
"Choose with arrow keys and press enter")
self.key_func['^I'] = self.toggle_choice
self.key_func[' '] = self.toggle_choice
self.key_func['KEY_LEFT'] = self.toggle_choice
self.key_func['KEY_RIGHT'] = self.toggle_choice
self.key_func['^M'] = self.engage
self.resize()
self.update_commands()
self.update_keys()
def resize(self):
self.need_resize = False
self.topic_win.resize(1, self.width, 0, 0)
self.qr_win.resize(self.height-3, self.width, 1, 0)
self.help_win.resize(1, self.width, self.height-1, 0)
def refresh(self):
if self.need_resize:
self.resize()
log.debug(' TAB Refresh: %s', self.__class__.__name__)
self.refresh_tab_win()
self.info_win.refresh()
self.topic_win.refresh()
self.qr_win.refresh()
self.help_win.refresh()
def on_input(self, key, raw):
if not raw and key in self.key_func:
return self.key_func[key]()
def toggle_choice(self):
log.debug(' TAB toggle_choice: %s', self.__class__.__name__)
self.qr_win.toggle_choice()
self.refresh()
self.core.doupdate()
def engage(self):
log.debug(' TAB engage: %s', self.__class__.__name__)
if self.qr_win.engage():
self.core.close_tab(self)
else:
self.refresh()
self.core.doupdate()
class Plugin(BasePlugin):
def init(self):
self.api.add_command(
'qr',
self.command_qr,
usage='<message>',
short='Display a QR code',
help='Display a QR code of <message> in a new tab')
self.api.add_command(
'invitation',
self.command_invite,
usage='[<server>]',
short='Invite a user',
help='Generate a XEP-0401 invitation on your server or on <server> and display a QR code')
def command_qr(self, msg):
t = QrTab(self.core, msg)
self.core.add_tab(t, True)
self.core.doupdate()
def on_next(self, iq, adhoc_session):
status = iq['command']['status']
xform = iq.xml.find(
'{http://jabber.org/protocol/commands}command/{jabber:x:data}x')
if xform is not None:
form = self.core.xmpp.plugin['xep_0004'].build_form(xform)
else:
form = None
uri = None
if status == 'completed' and form:
for field in form:
log.debug(' field: %s -> %s', field['var'], field['value'])
if field['var'] == 'landing-url' and field['value']:
uri = field.get_value(convert=False)
if field['var'] == 'uri' and field['value'] and uri is None:
uri = field.get_value(convert=False)
if uri:
t = QrTab(self.core, uri)
self.core.add_tab(t, True)
self.core.doupdate()
else:
self.core.handler.next_adhoc_step(iq, adhoc_session)
@command_args_parser.quoted(0, 1, defaults=[])
def command_invite(self, args):
server = self.core.xmpp.boundjid.domain
if len(args) > 0:
try:
server = JID(args[0])
except InvalidJID:
self.api.information(f'Invalid JID: {args[0]}', 'Error')
return
session = {
'next' : self.on_next,
'error': self.core.handler.adhoc_error
}
self.core.xmpp.plugin['xep_0050'].start_command(server, 'urn:xmpp:invite#invite', session)
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