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# Copyright (c) 2022 Tulir Asokan
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
from __future__ import annotations
from typing import Any, TypedDict
from mautrix.types import (
Member,
Membership,
MemberStateEventContent,
PowerLevelStateEventContent,
RoomEncryptionStateEventContent,
RoomID,
UserID,
)
from .abstract import StateStore
class SerializedStateStore(TypedDict):
members: dict[RoomID, dict[UserID, Any]]
full_member_list: dict[RoomID, bool]
power_levels: dict[RoomID, Any]
encryption: dict[RoomID, Any]
class MemoryStateStore(StateStore):
members: dict[RoomID, dict[UserID, Member]]
full_member_list: dict[RoomID, bool]
power_levels: dict[RoomID, PowerLevelStateEventContent]
encryption: dict[RoomID, RoomEncryptionStateEventContent | None]
def __init__(self) -> None:
self.members = {}
self.full_member_list = {}
self.power_levels = {}
self.encryption = {}
def serialize(self) -> SerializedStateStore:
"""
Convert the data in the store into a JSON-friendly dict.
Returns: A dict that can be safely serialized with most object serialization methods.
"""
return {
"members": {
room_id: {user_id: member.serialize() for user_id, member in members.items()}
for room_id, members in self.members.items()
},
"full_member_list": self.full_member_list,
"power_levels": {
room_id: content.serialize() for room_id, content in self.power_levels.items()
},
"encryption": {
room_id: (content.serialize() if content is not None else None)
for room_id, content in self.encryption.items()
},
}
def deserialize(self, data: SerializedStateStore) -> None:
"""
Parse a previously serialized dict into this state store.
Args:
data: A dict returned by :meth:`serialize`.
"""
self.members = {
room_id: {user_id: Member.deserialize(member) for user_id, member in members.items()}
for room_id, members in data["members"].items()
}
self.full_member_list = data["full_member_list"]
self.power_levels = {
room_id: PowerLevelStateEventContent.deserialize(content)
for room_id, content in data["power_levels"].items()
}
self.encryption = {
room_id: (
RoomEncryptionStateEventContent.deserialize(content)
if content is not None
else None
)
for room_id, content in data["encryption"].items()
}
async def get_member(self, room_id: RoomID, user_id: UserID) -> Member | None:
try:
return self.members[room_id][user_id]
except KeyError:
return None
async def set_member(
self, room_id: RoomID, user_id: UserID, member: Member | MemberStateEventContent
) -> None:
if not isinstance(member, Member):
member = Member(
membership=member.membership,
avatar_url=member.avatar_url,
displayname=member.displayname,
)
try:
self.members[room_id][user_id] = member
except KeyError:
self.members[room_id] = {user_id: member}
async def set_membership(
self, room_id: RoomID, user_id: UserID, membership: Membership
) -> None:
try:
room_members = self.members[room_id]
except KeyError:
self.members[room_id] = {user_id: Member(membership=membership)}
return
try:
room_members[user_id].membership = membership
except (KeyError, TypeError):
room_members[user_id] = Member(membership=membership)
async def get_member_profiles(
self,
room_id: RoomID,
memberships: tuple[Membership, ...] = (Membership.JOIN, Membership.INVITE),
) -> dict[UserID, Member]:
try:
return {
user_id: member
for user_id, member in self.members[room_id].items()
if member.membership in memberships
}
except KeyError:
return {}
async def set_members(
self,
room_id: RoomID,
members: dict[UserID, Member | MemberStateEventContent],
only_membership: Membership | None = None,
) -> None:
old_members = {}
if only_membership is not None:
old_members = {
user_id: member
for user_id, member in self.members.get(room_id, {}).items()
if member.membership != only_membership
}
self.members[room_id] = {
user_id: (
member
if isinstance(member, Member)
else Member(
membership=member.membership,
avatar_url=member.avatar_url,
displayname=member.displayname,
)
)
for user_id, member in members.items()
}
self.members[room_id].update(old_members)
self.full_member_list[room_id] = True
async def has_full_member_list(self, room_id: RoomID) -> bool:
return self.full_member_list.get(room_id, False)
async def has_power_levels_cached(self, room_id: RoomID) -> bool:
return room_id in self.power_levels
async def get_power_levels(self, room_id: RoomID) -> PowerLevelStateEventContent | None:
return self.power_levels.get(room_id)
async def set_power_levels(
self, room_id: RoomID, content: PowerLevelStateEventContent | dict[str, Any]
) -> None:
if not isinstance(content, PowerLevelStateEventContent):
content = PowerLevelStateEventContent.deserialize(content)
self.power_levels[room_id] = content
async def has_encryption_info_cached(self, room_id: RoomID) -> bool:
return room_id in self.encryption
async def is_encrypted(self, room_id: RoomID) -> bool | None:
try:
return self.encryption[room_id] is not None
except KeyError:
return None
async def get_encryption_info(self, room_id: RoomID) -> RoomEncryptionStateEventContent:
return self.encryption.get(room_id)
async def set_encryption_info(
self, room_id: RoomID, content: RoomEncryptionStateEventContent | dict[str, Any]
) -> None:
if not isinstance(content, RoomEncryptionStateEventContent):
content = RoomEncryptionStateEventContent.deserialize(content)
self.encryption[room_id] = content
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