271 lines
9.0 KiB
Python
271 lines
9.0 KiB
Python
# Copyright 2019 miruka
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# This file is part of harmonyqml, licensed under GPLv3.
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from threading import Lock
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from typing import Any, Deque, Dict, List, Optional, Sequence
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from PyQt5.QtCore import QDateTime, QObject, pyqtBoundSignal
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import nio
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from nio.rooms import MatrixRoom
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from .backend import Backend
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from .client import Client
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from .model.items import Room, RoomEvent, User
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Inviter = Optional[Dict[str, str]]
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LeftEvent = Optional[Dict[str, str]]
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class SignalManager(QObject):
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_lock: Lock = Lock()
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def __init__(self, backend: Backend) -> None:
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super().__init__(parent=backend)
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self.backend = backend
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self.last_room_events: Deque[str] = Deque(maxlen=1000)
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self._events_in_transfer: int = 0
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cm = self.backend.clientManager
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cm.clientAdded.connect(self.onClientAdded)
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cm.clientDeleted.connect(self.onClientDeleted)
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def onClientAdded(self, client: Client) -> None:
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self.connectClient(client)
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self.backend.models.accounts.append(User(
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userId = client.userId,
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displayName = self.backend.getUserDisplayName(client.userId),
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))
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def onClientDeleted(self, user_id: str) -> None:
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accs = self.backend.models.accounts
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del accs[accs.indexWhere("userId", user_id)]
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def connectClient(self, client: Client) -> None:
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for name in dir(client):
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attr = getattr(client, name)
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if isinstance(attr, pyqtBoundSignal):
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def onSignal(*args, name=name) -> None:
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func = getattr(self, f"on{name[0].upper()}{name[1:]}")
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func(client, *args)
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attr.connect(onSignal)
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def onRoomInvited(self,
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client: Client,
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room_id: str,
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inviter: Inviter = None) -> None:
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self._add_room(client, room_id, client.nio.invited_rooms[room_id],
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"Invites", inviter=inviter)
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def onRoomJoined(self, client: Client, room_id: str) -> None:
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self._add_room(client, room_id, client.nio.rooms[room_id], "Rooms")
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def onRoomLeft(self,
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client: Client,
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room_id: str,
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left_event: LeftEvent = None) -> None:
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self._add_room(client, room_id, client.nio.rooms.get(room_id), "Left",
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left_event=left_event)
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def _move_room(self, account_id: str, room_id: str) -> None:
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def get_newest_event_date_time(room_id: str) -> QDateTime:
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for ev in self.backend.models.roomEvents[room_id]:
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if not self.backend.EventIsOurProfileChanged(ev, account_id):
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return ev.dateTime
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return QDateTime.fromMSecsSinceEpoch(0)
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rooms_model = self.backend.models.rooms[account_id]
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room_index = rooms_model.indexWhere("roomId", room_id)
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category = rooms_model[room_index].category
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timestamp = get_newest_event_date_time(room_id)
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def get_index(put_before_categories: Sequence[str],
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put_after_categories: Sequence[str]) -> int:
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for i, room in enumerate(rooms_model):
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if room.category not in put_after_categories and \
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(room.category in put_before_categories or
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timestamp >= get_newest_event_date_time(room.roomId)):
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return i
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return len(rooms_model) - 1
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to = 0
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if category == "Invites":
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to = get_index(["Rooms", "Left"], [])
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if category == "Rooms":
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to = get_index(["Left"], ["Invites"])
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elif category == "Left":
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to = get_index([], ["Invites", "Rooms", "Left"])
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rooms_model.move(room_index, to)
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def _add_room(self,
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client: Client,
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room_id: str,
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room: MatrixRoom,
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category: str,
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inviter: Inviter = None,
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left_event: LeftEvent = None) -> None:
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if (inviter and left_event):
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raise ValueError()
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model = self.backend.models.rooms[client.userId]
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no_update = []
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def get_displayname() -> Optional[str]:
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if not room:
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no_update.append("displayName")
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return room_id
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name = room.name or room.canonical_alias
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if name:
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return name
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name = room.group_name()
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return None if name == "Empty room?" else name
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item = Room(
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roomId = room_id,
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category = category,
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displayName = get_displayname(),
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topic = room.topic if room else "",
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inviter = inviter,
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leftEvent = left_event,
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no_update = no_update,
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)
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model.updateOrAppendWhere("roomId", room_id, item)
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with self._lock:
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self._move_room(client.userId, room_id)
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def onRoomSyncPrevBatchTokenReceived(self,
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_: Client,
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room_id: str,
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token: str) -> None:
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if room_id not in self.backend.past_tokens:
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self.backend.past_tokens[room_id] = token
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def onRoomPastPrevBatchTokenReceived(self,
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_: Client,
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room_id: str,
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token: str) -> None:
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if self.backend.past_tokens[room_id] == token:
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self.backend.fully_loaded_rooms.add(room_id)
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self.backend.past_tokens[room_id] = token
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def onRoomEventReceived(self,
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client: Client,
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room_id: str,
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etype: str,
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edict: Dict[str, Any]) -> None:
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def process() -> None:
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# Prevent duplicate events in models due to multiple accounts
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if edict["event_id"] in self.last_room_events:
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return
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self.last_room_events.appendleft(edict["event_id"])
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model = self.backend.models.roomEvents[room_id]
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date_time = QDateTime\
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.fromMSecsSinceEpoch(edict["server_timestamp"])
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new_event = RoomEvent(type=etype, dateTime=date_time, dict=edict)
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if self._events_in_transfer:
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local_echoes_met: int = 0
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update_at: Optional[int] = None
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# Find if any locally echoed event corresponds to new_event
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for i, event in enumerate(model):
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if not event.isLocalEcho:
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continue
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sb = (event.dict["sender"], event.dict["body"])
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new_sb = (new_event.dict["sender"], new_event.dict["body"])
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if sb == new_sb:
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# The oldest matching local echo shall be replaced
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update_at = max(update_at or 0, i)
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local_echoes_met += 1
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if local_echoes_met >= self._events_in_transfer:
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break
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if update_at is not None:
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model.update(update_at, new_event)
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self._events_in_transfer -= 1
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return
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for i, event in enumerate(model):
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if event.isLocalEcho:
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continue
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# Model is sorted from newest to oldest message
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if new_event.dateTime > event.dateTime:
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model.insert(i, new_event)
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return
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model.append(new_event)
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with self._lock:
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process()
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self._move_room(client.userId, room_id)
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def onRoomTypingUsersUpdated(self,
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client: Client,
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room_id: str,
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users: List[str]) -> None:
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rooms = self.backend.models.rooms[client.userId]
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rooms[rooms.indexWhere("roomId", room_id)].typingUsers = users
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def onMessageAboutToBeSent(self,
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client: Client,
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room_id: str,
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content: Dict[str, str]) -> None:
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with self._lock:
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timestamp = QDateTime.currentMSecsSinceEpoch()
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model = self.backend.models.roomEvents[room_id]
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nio_event = nio.events.RoomMessage.parse_event({
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"event_id": "",
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"sender": client.userId,
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"origin_server_ts": timestamp,
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"content": content,
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})
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event = RoomEvent(
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type = type(nio_event).__name__,
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dateTime = QDateTime.fromMSecsSinceEpoch(timestamp),
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dict = nio_event.__dict__,
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isLocalEcho = True,
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)
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model.insert(0, event)
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self._events_in_transfer += 1
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self._move_room(client.userId, room_id)
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