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mirror of https://github.com/eternnoir/pyTelegramBotAPI.git synced 2023-08-10 21:12:57 +03:00
pyTelegramBotAPI/telebot/handler_backends.py

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import os
import pickle
import threading
from telebot import apihelper
class HandlerBackend(object):
"""
Class for saving (next step|reply) handlers
"""
def __init__(self, handlers=None):
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if handlers is None:
handlers = {}
self.handlers = handlers
def register_handler(self, handler_group_id, handler):
raise NotImplementedError()
def clear_handlers(self, handler_group_id):
raise NotImplementedError()
def get_handlers(self, handler_group_id):
raise NotImplementedError()
class MemoryHandlerBackend(HandlerBackend):
def register_handler(self, handler_group_id, handler):
if handler_group_id in self.handlers:
self.handlers[handler_group_id].append(handler)
else:
self.handlers[handler_group_id] = [handler]
def clear_handlers(self, handler_group_id):
self.handlers.pop(handler_group_id, None)
def get_handlers(self, handler_group_id):
return self.handlers.pop(handler_group_id, None)
def load_handlers(self, filename, del_file_after_loading):
raise NotImplementedError()
class FileHandlerBackend(HandlerBackend):
def __init__(self, handlers=None, filename='./.handler-saves/handlers.save', delay=120):
super(FileHandlerBackend, self).__init__(handlers)
self.filename = filename
self.delay = delay
self.timer = threading.Timer(delay, self.save_handlers)
def register_handler(self, handler_group_id, handler):
if handler_group_id in self.handlers:
self.handlers[handler_group_id].append(handler)
else:
self.handlers[handler_group_id] = [handler]
self.start_save_timer()
def clear_handlers(self, handler_group_id):
self.handlers.pop(handler_group_id, None)
self.start_save_timer()
def get_handlers(self, handler_group_id):
handlers = self.handlers.pop(handler_group_id, None)
self.start_save_timer()
return handlers
def start_save_timer(self):
if not self.timer.is_alive():
if self.delay <= 0:
self.save_handlers()
else:
self.timer = threading.Timer(self.delay, self.save_handlers)
self.timer.start()
def save_handlers(self):
self.dump_handlers(self.handlers, self.filename)
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def load_handlers(self, filename=None, del_file_after_loading=True):
if not filename:
filename = self.filename
tmp = self.return_load_handlers(filename, del_file_after_loading=del_file_after_loading)
if tmp is not None:
self.handlers.update(tmp)
@staticmethod
def dump_handlers(handlers, filename, file_mode="wb"):
dirs = filename.rsplit('/', maxsplit=1)[0]
os.makedirs(dirs, exist_ok=True)
with open(filename + ".tmp", file_mode) as file:
if (apihelper.CUSTOM_SERIALIZER is None):
pickle.dump(handlers, file)
else:
apihelper.CUSTOM_SERIALIZER.dump(handlers, file)
if os.path.isfile(filename):
os.remove(filename)
os.rename(filename + ".tmp", filename)
@staticmethod
def return_load_handlers(filename, del_file_after_loading=True):
if os.path.isfile(filename) and os.path.getsize(filename) > 0:
with open(filename, "rb") as file:
if (apihelper.CUSTOM_SERIALIZER is None):
handlers = pickle.load(file)
else:
handlers = apihelper.CUSTOM_SERIALIZER.load(file)
if del_file_after_loading:
os.remove(filename)
return handlers
class RedisHandlerBackend(HandlerBackend):
def __init__(self, handlers=None, host='localhost', port=6379, db=0, prefix='telebot', password=None):
super(RedisHandlerBackend, self).__init__(handlers)
from redis import Redis
self.prefix = prefix
self.redis = Redis(host, port, db, password)
def _key(self, handle_group_id):
return ':'.join((self.prefix, str(handle_group_id)))
def register_handler(self, handler_group_id, handler):
handlers = []
value = self.redis.get(self._key(handler_group_id))
if value:
handlers = pickle.loads(value)
handlers.append(handler)
self.redis.set(self._key(handler_group_id), pickle.dumps(handlers))
def clear_handlers(self, handler_group_id):
self.redis.delete(self._key(handler_group_id))
def get_handlers(self, handler_group_id):
handlers = None
value = self.redis.get(self._key(handler_group_id))
if value:
handlers = pickle.loads(value)
self.clear_handlers(handler_group_id)
return handlers
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class StateMachine:
def __init__(self):
self._states = {}
def add_state(self, chat_id, state):
"""
Add a state.
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:param chat_id:
:param state: new state
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"""
if chat_id in self._states:
self._states[int(chat_id)]['state'] = state
else:
self._states[chat_id] = {'state': state,'data': {}}
def current_state(self, chat_id):
"""Current state"""
if chat_id in self._states: return self._states[chat_id]['state']
else: return False
def delete_state(self, chat_id):
"""Delete a state"""
return self._states.pop(chat_id)
def _get_data(self, chat_id):
return self._states[chat_id]['data']
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class State:
"""
Base class for state managing.
"""
def __init__(self, obj: StateMachine) -> None:
self.obj = obj
def set(self, chat_id, new_state):
"""
Set a new state for a user.
:param chat_id:
:param new_state: new_state of a user
"""
self.obj._states[chat_id]['state'] = new_state
def finish(self, chat_id):
"""
Finish(delete) state of a user.
:param chat_id:
"""
self.obj._states.pop(chat_id)
def retrieve_data(self, chat_id):
"""
Save input text.
Usage:
with state.retrieve_data(message.chat.id) as data:
data['name'] = message.text
Also, at the end of your 'Form' you can get the name:
data['name']
"""
return StateContext(self.obj, chat_id)
class StateContext:
"""
Class for data.
"""
def __init__(self , obj: StateMachine, chat_id) -> None:
self.obj = obj
self.chat_id = chat_id
self.data = obj._get_data(chat_id)
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def __enter__(self):
return self.data
def __exit__(self, exc_type, exc_val, exc_tb):
return