116 lines
4.0 KiB
Python
116 lines
4.0 KiB
Python
import random
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import base64
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import json
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import os
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import datetime
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def generate_random_id(_s=set()):
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while (new_id := base64.b32encode(bytearray(random.randint(0, 0xFF) for _ in range(10)))[:16].decode().lower()) in _s:
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pass
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_s.add(new_id)
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return new_id
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class Model(object):
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class ApiMethod:
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dict = dict()
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def __init__(self, fun):
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self.dict[fun.__name__] = fun
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def __contains__(self, item):
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return item in self.dict
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def __init__(self, filename="tehmodel.json"):
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self.sockets = {} # mapping: client -> socket
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self.filename = filename
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self.model = None
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if os.path.isfile(filename):
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with open(filename) as f:
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try:
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self.model = json.load(f)
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except:
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self.model = {}
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else:
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self.model = {}
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self.assert_model()
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def assert_model(self):
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if not "clients" in self.model:
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self.model["clients"] = {}
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if not "sessions" in self.model:
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self.model["sessions"] = {}
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@ApiMethod
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async def test_api(self, clientid):
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print(f'test_api {clientid=}')
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@ApiMethod
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async def test_yeet(self, clientid):
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raise Exception('yeet')
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@ApiMethod
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async def create_session(self, clientid) -> str:
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sessionname = generate_random_id()
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newsession = {"id": sessionname, "owner": clientid, "clients": []}
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self.model["sessions"][sessionname] = newsession
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await self.send_state(clientid)
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@ApiMethod
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async def join_session(self, clientid, sessionid):
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if sessionid in self.model["sessions"]:
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# remove old session
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if "session" in self.model["clients"][clientid]:
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oldsession = self.model["clients"][clientid]["session"]
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self.model["sessions"][oldsession]["clients"].remove(clientid)
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self.model["sessions"][sessionid]["clients"].append(clientid)
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self.model["clients"][clientid]["session"] = sessionid
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await self.send_state(clientid)
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else:
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raise Exception(f"Session {sessionid} does not exist")
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async def send_state(self, clientid):
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# TODO: compute state, send to client
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session = "No session"
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if "session" in self.model["clients"][clientid]:
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session = self.model["clients"][clientid]["session"]
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allsessions = [ name for name in self.model["sessions"] ]
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username = self.model["clients"][clientid]["name"] if "name" in self.model["clients"][clientid] else "Joe"
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data = {"currentsession": session, "allsessions": allsessions, "username": username}
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for socket in self.sockets[clientid]:
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await socket.send_json(data)
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def save(self):
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with open(self.filename, "w") as f:
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json.dump(self.model, f)
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if not os.path.isdir("backups"):
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try:
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os.mkdir("backups")
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except FileExistsError:
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print("backups is a file, no directory. Please delete yourself")
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datestring = datetime.datetime.strftime(datetime.datetime.now(), "%Y-%m-%d-%H%M%S")
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with open(f"backups/{datestring}_{self.filename}", "w") as f:
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json.dump(self.model, f)
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def exists_client(self, clientid: str) -> bool:
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return clientid in self.model["clients"]
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def create_client(self, name="Joe") -> str:
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clientname = generate_random_id()
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newclient = {"id": clientname, "name": name}
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self.model["clients"][clientname] = newclient
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return clientname
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async def subscribe(self, clientid, socket):
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if not clientid in self.sockets:
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self.sockets[clientid] = []
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self.sockets[clientid].append(socket)
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await self.send_state(clientid)
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def unsubscribe(self, socket):
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for client in self.sockets:
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if socket in self.sockets[client]:
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self.sockets[client].remove(socket)
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