matrix-appservice-kakaotalk/matrix_appservice_kakaotalk/formatter/from_matrix.py

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# matrix-appservice-kakaotalk - A Matrix-KakaoTalk puppeting bridge.
# Copyright (C) 2022 Tulir Asokan, Andrew Ferrazzutti
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
from __future__ import annotations
from typing import NamedTuple
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from mautrix.appservice import IntentAPI
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from mautrix.types import Format, MessageEventContent, RelationType, RoomID, UserID
from mautrix.util.formatter import (
EntityString,
EntityType,
MarkdownString,
MatrixParser,
SimpleEntity,
)
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from mautrix.util.logging import TraceLogger
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from ..kt.types.bson import Long
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from ..kt.types.chat.attachment import ReplyAttachment, MentionStruct
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from ..kt.client.types import TO_MSGTYPE_MAP
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from .. import puppet as pu, user as u
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from ..db import Message as DBMessage
class SendParams(NamedTuple):
text: str
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mentions: list[MentionStruct] | None
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reply_to: ReplyAttachment
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class KakaoTalkFormatString(EntityString[SimpleEntity, EntityType], MarkdownString):
def format(self, entity_type: EntityType, **kwargs) -> KakaoTalkFormatString:
if entity_type == EntityType.USER_MENTION:
self.entities.append(
SimpleEntity(
type=entity_type,
offset=0,
length=len(self.text),
extra_info={"user_id": kwargs["user_id"]},
)
)
self.text = f"@{self.text}"
return self
class ToKakaoTalkParser(MatrixParser[KakaoTalkFormatString]):
fs = KakaoTalkFormatString
async def _get_id_from_mxid(mxid: UserID) -> Long | None:
user = await u.User.get_by_mxid(mxid, create=False)
if user and user.ktid:
return user.ktid
else:
puppet = await pu.Puppet.get_by_mxid(mxid, create=False)
return puppet.ktid if puppet else None
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async def matrix_to_kakaotalk(
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content: MessageEventContent, room_id: RoomID, log: TraceLogger, intent: IntentAPI
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) -> SendParams:
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# NOTE By design, this *throws* if user intent can't be matched (i.e. if a reply can't be created)
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if content.relates_to.rel_type == RelationType.REPLY:
message = await DBMessage.get_by_mxid(content.relates_to.event_id, room_id)
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if not message:
raise ValueError(
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f"Couldn't find reply target {content.relates_to.event_id}"
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" to bridge text message reply metadata to KakaoTalk"
)
try:
mx_event = await intent.get_event(room_id, message.mxid)
except:
log.exception(f"Failed to find Matrix event for reply target {message.mxid}")
raise
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kt_sender = await _get_id_from_mxid(mx_event.sender)
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if kt_sender is None:
raise ValueError(
f"Found no KakaoTalk user ID for reply target sender {mx_event.sender}"
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)
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content.trim_reply_fallback()
reply_to = ReplyAttachment(
# TODO
#mentions=[],
# TODO What are reply URLs for?
#urls=[],
# TODO Set this for emoticon reply, but must first support those
attach_only=False,
# TODO If replying with media works, must set type AND all attachment properties
# But then, the reply object must be an intersection of a ReplyAttachment and something else
#attach_type=TO_MSGTYPE_MAP.get(content.msgtype),
src_logId=message.ktid,
# TODO
src_mentions=[],
# TODO Check if source message needs to be formatted
src_message=mx_event.content.body,
src_type=TO_MSGTYPE_MAP[mx_event.content.msgtype],
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src_userId=kt_sender,
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)
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else:
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reply_to = None
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if content.get("format", None) == Format.HTML and content["formatted_body"]:
parsed = await ToKakaoTalkParser().parse(content["formatted_body"])
text = parsed.text
mentions_by_user: dict[Long, MentionStruct] = {}
# Make sure to not create remote mentions for any remote user not in the room
if parsed.entities:
joined_members = set(await intent.get_room_members(room_id))
last_offset = 0
at = 0
for mention in sorted(parsed.entities, key=lambda entity: entity.offset):
mxid = mention.extra_info["user_id"]
if mxid not in joined_members:
continue
ktid = await _get_id_from_mxid(mxid)
if ktid is None:
continue
at += text[last_offset:mention.offset+1].count("@")
last_offset = mention.offset+1
mention = mentions_by_user.setdefault(ktid, MentionStruct(
at=[],
len=mention.length,
user_id=ktid,
))
mention.at.append(at)
mentions = list(mentions_by_user.values())
else:
text = content.body
mentions = None
return SendParams(text=text, mentions=mentions, reply_to=reply_to)