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'''
A intermediary class for general purpose
flow control operations throughout the
program.
Verified: 2021 February 7
* Follows PEP8
* Tested Platforms
* Windows 10
* Third Party Modules
* eel
'''
from server.state import ServerStatic, Dynamic
from server.console import Console
import socket
import time
if not ServerStatic.TERMINAL:
import eel
class Controller:
@staticmethod
def message(ret_msg, *args, **kwargs):
Dynamic.MESSAGES.append((ret_msg, args, kwargs))
# NOTE : Calling this method with ret_msg
# enabled at the same time twice will cause
# erroneous output & should only be called
# from the GUI, as it requires return data
if ret_msg:
try:
while Dynamic.RESULT is None:
time.sleep(.1)
else:
return Dynamic.RESULT
finally:
Dynamic.RESULT = None
@staticmethod
def exit_program():
if Dynamic.CLIENTS:
for unique_id in Dynamic.CLIENTS.copy():
Controller.delete_client(unique_id, False)
raise SystemExit
@staticmethod
def add_session(unique_id, allow_raise=True):
try:
assert unique_id in Dynamic.CLIENTS, 'Client Not Found'
assert unique_id not in Dynamic.SESSION, \
'Client Already In Session'
Dynamic.SESSION.add(unique_id)
if not ServerStatic.TERMINAL:
if eel._websockets != []:
eel.sessionAddEel(unique_id)
except Exception:
if allow_raise:
raise
@staticmethod
def remove_session(unique_id, allow_raise=True):
try:
Dynamic.SESSION.remove(unique_id)
if not ServerStatic.TERMINAL:
if eel._websockets != []:
eel.sessionRemoveEel(unique_id)
except Exception:
if allow_raise:
raise
@staticmethod
def delete_client(unique_id, allow_raise=True):
try:
client = Dynamic.CLIENTS[unique_id]
del Dynamic.CLIENTS[unique_id]
try:
client.socket.shutdown(socket.SHUT_RDWR)
except Exception:
pass
client.socket.close()
Controller.remove_session(unique_id, False)
if not ServerStatic.TERMINAL:
if eel._websockets != []:
eel.clientRemoveEel(unique_id)
Console.log('Disconnected Client [{} {} {}]\n'.format(
client.connect_ip.pure, ServerStatic.SEPERATOR,
unique_id), log_type=ServerStatic.ACTION)
except Exception:
if allow_raise:
raise
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