def __init__(self):
self.postillon_crawler = PostillonCrawler(verbosity = BE_VERBOSE)
self.data_manager = DataManager()
self.last_request_id = 0
self.start_polling_loop()
class TelegramPostillonBot:
def __init__(self):
self.postillon_crawler = PostillonCrawler(verbosity = BE_VERBOSE)
self.data_manager = DataManager()
self.last_request_id = 0
self.start_polling_loop()
def cleanup(self):
self.data_manager.cleanup()
def start_polling_loop(self):
if BE_VERBOSE: print('start polling loop...')
while True:
try:
parameters = {
'offset': self.last_request_id + 1,
'timeout': 1
}
requests = self.perform_api_call(API_CALL_GET_UPDATES, parameters)
if (requests != False):
for request in requests:
chat_id, command = self.parse_message_object(request['message'])
if command in KNOWN_COMMANDS:
if BE_VERBOSE:
print('received "', command, '" from chat_id ', chat_id)
self.respond_to_request(chat_id, command)
if request['update_id'] > self.last_request_id:
self.last_request_id = request['update_id']
else:
if BE_VERBOSE:
print('no requests, wait for ' + str(API_POLL_INTERVAL) + 's')
sleep(API_POLL_INTERVAL)
except KeyboardInterrupt:
if BE_VERBOSE: print('Terminate bot because of keyboard interruption')
self.cleanup()
sys.exit(0)
except:
print('Uncatched error in run loop; terminating bot!')
self.cleanup()
sys.exit(0)
def perform_api_call(self, function, parameters={}):
parsed_parameters = urllib.parse.urlencode(parameters)
encoded_parameters = parsed_parameters.encode('utf-8')
try:
# if BE_VERBOSE:
# print('requesting API with parameters: ' + parsed_parameters)
request = urllib.request.Request(
API_URL + '/' + function, encoded_parameters)
response = urllib.request.urlopen(request).read()
decoded_response = json.loads(response.decode('utf-8'))
if decoded_response['ok'] == True:
return decoded_response['result']
else:
if BE_VERBOSE: print('API error, bad respond code')
except:
if BE_VERBOSE: print('Uncatched error while requesting the bot API')
return False
def parse_message_object(self, message):
chat_id = -1
command = ''
# save the received message to the DB
self.data_manager.new_message(message)
if 'chat' in message:
chat_id = message['chat']['id']
elif BE_VERBOSE:
print('no chat object in responded message. \
Unable to identify user or group to respond to.')
if 'text' in message:
command = message['text']
return chat_id, command
def respond_to_request(self, chat_id, command):
data = {'chat_id': chat_id}
if command == KNOWN_COMMANDS[0]:
if BE_VERBOSE: print('responding with newsticker')
self.postillon_crawler.check_for_updates()
data['text'] = self.data_manager.get_newsticker_for_chat(chat_id)
data['text'] += ORIGINATOR_REFERENCE
elif command == KNOWN_COMMANDS[1]:
if BE_VERBOSE: print('responding with statistics')
chats, newsticker, requests = self.data_manager.get_stistic()
data['text'] = 'I answered ' + str(requests) + ' requests from '
data['text'] += str(chats) + ' people and I know '
data['text'] += str(newsticker) + ' headlines!'
else:
if BE_VERBOSE: print('responding with help text')
data['text'] = self.create_information_respnse()
self.perform_api_call(API_CALL_SEND_MESSAGE, data)
def create_information_respnse(self):
return '++++ Unofficial Postillon bot: \