#!/usr/bin/env python

#

# A library that provides a Python interface to the Telegram Bot API

# Copyright (C) 2015-2018

# Leandro Toledo de Souza <devs@python-telegram-bot.org>

#

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU Lesser Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# This program 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 Lesser Public License for more details.

#

# You should have received a copy of the GNU Lesser Public License

# along with this program. If not, see [http://www.gnu.org/licenses/].

# TODO: Remove allow_edited

"""This module contains the RegexHandler class."""

import warnings

from telegram.utils.deprecate import TelegramDeprecationWarning

from telegram.ext import MessageHandler, Filters

class RegexHandler(MessageHandler):

"""Handler class to handle Telegram updates based on a regex.

It uses a regular expression to check text messages. Read the documentation of the ``re``

module for more information. The ``re.match`` function is used to determine if an update should

be handled by this handler.

Attributes:

pattern (:obj:`str` | :obj:`Pattern`): The regex pattern.

callback (:obj:`callable`): The callback function for this handler.

pass_groups (:obj:`bool`): Determines whether ``groups`` will be passed to the

callback function.

pass_groupdict (:obj:`bool`): Determines whether ``groupdict``. will be passed to

the callback function.

pass_update_queue (:obj:`bool`): Determines whether ``update_queue`` will be

passed to the callback function.

pass_job_queue (:obj:`bool`): Determines whether ``job_queue`` will be passed to

the callback function.

pass_user_data (:obj:`bool`): Determines whether ``user_data`` will be passed to

the callback function.

pass_chat_data (:obj:`bool`): Determines whether ``chat_data`` will be passed to

the callback function.

Note:

This handler is being deprecated. For the same usecase use:

``MessageHandler(Filters.regex(r'pattern'), callback)``

Args:

pattern (:obj:`str` | :obj:`Pattern`): The regex pattern.

callback (:obj:`callable`): The callback function for this handler. Will be called when

:attr:`check_update` has determined that an update should be processed by this handler.

Callback signature for context based API:

``def callback(update: Update, context: CallbackContext)``

The return value of the callback is usually ignored except for the special case of

:class:`telegram.ext.ConversationHandler`.

pass_groups (:obj:`bool`, optional): If the callback should be passed the result of

``re.match(pattern, data).groups()`` as a keyword argument called ``groups``.

Default is ``False``

pass_groupdict (:obj:`bool`, optional): If the callback should be passed the result of

``re.match(pattern, data).groupdict()`` as a keyword argument called ``groupdict``.

Default is ``False``

pass_update_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called

``update_queue`` will be passed to the callback function. It will be the ``Queue``

instance used by the :class:`telegram.ext.Updater` and :class:`telegram.ext.Dispatcher`

that contains new updates which can be used to insert updates. Default is ``False``.

pass_job_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called

``job_queue`` will be passed to the callback function. It will be a

:class:`telegram.ext.JobQueue` instance created by the :class:`telegram.ext.Updater`

which can be used to schedule new jobs. Default is ``False``.

pass_user_data (:obj:`bool`, optional): If set to ``True``, a keyword argument called

``user_data`` will be passed to the callback function. Default is ``False``.

pass_chat_data (:obj:`bool`, optional): If set to ``True``, a keyword argument called

``chat_data`` will be passed to the callback function. Default is ``False``.

message_updates (:obj:`bool`, optional): Should "normal" message updates be handled?

Default is ``True``.

channel_post_updates (:obj:`bool`, optional): Should channel posts updates be handled?

Default is ``True``.

edited_updates (:obj:`bool`, optional): Should "edited" message updates be handled? Default

is ``False``.

Raises:

ValueError

"""

def __init__(self,

pattern,

callback,

pass_groups=False,

pass_groupdict=False,

pass_update_queue=False,

pass_job_queue=False,

pass_user_data=False,

pass_chat_data=False,

allow_edited=False,

message_updates=True,

channel_post_updates=False,

edited_updates=False):

warnings.warn('RegexHandler is deprecated. See https://git.io/fxJuV for more info',

TelegramDeprecationWarning,

stacklevel=2)

super(RegexHandler, self).__init__(Filters.regex(pattern),

callback,

pass_update_queue=pass_update_queue,

pass_job_queue=pass_job_queue,

pass_user_data=pass_user_data,

pass_chat_data=pass_chat_data,

message_updates=message_updates,

channel_post_updates=channel_post_updates,

edited_updates=edited_updates)

self.pass_groups = pass_groups

self.pass_groupdict = pass_groupdict

def collect_optional_args(self, dispatcher, update=None, check_result=None):

optional_args = super(RegexHandler, self).collect_optional_args(dispatcher, update,

check_result)

if self.pass_groups:

optional_args['groups'] = check_result['matches'][0].groups()

if self.pass_groupdict:

optional_args['groupdict'] = check_result['matches'][0].groupdict()

return optional_args