122 lines
4.1 KiB
JavaScript
122 lines
4.1 KiB
JavaScript
/*
|
|
Copyright 2016 OpenMarket Ltd
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
import MatrixClientPeg from '../MatrixClientPeg';
|
|
|
|
/**
|
|
* Class that takes a Matrix Client and flips the m.direct map
|
|
* so the operation of mapping a room ID to which user it's a DM
|
|
* with can be performed efficiently.
|
|
*
|
|
* With 'start', this can also keep itself up to date over time.
|
|
*/
|
|
export default class DMRoomMap {
|
|
constructor(matrixClient) {
|
|
this.matrixClient = matrixClient;
|
|
this.roomToUser = null;
|
|
|
|
// XXX: Force-bind the event handler method because it
|
|
// doesn't call it with our object as the 'this'
|
|
// (use a static property arrow function for this when we can)
|
|
this._onAccountData = this._onAccountData.bind(this);
|
|
|
|
const mDirectEvent = matrixClient.getAccountData('m.direct');
|
|
if (!mDirectEvent) {
|
|
this.userToRooms = {};
|
|
} else {
|
|
this.userToRooms = mDirectEvent.getContent();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Makes and returns a new shared instance that can then be accessed
|
|
* with shared(). This returned instance is not automatically started.
|
|
*/
|
|
static makeShared() {
|
|
DMRoomMap._sharedInstance = new DMRoomMap(MatrixClientPeg.get());
|
|
return DMRoomMap._sharedInstance;
|
|
}
|
|
|
|
/**
|
|
* Returns a shared instance of the class
|
|
* that uses the singleton matrix client
|
|
* The shared instance must be started before use.
|
|
*/
|
|
static shared() {
|
|
return DMRoomMap._sharedInstance;
|
|
}
|
|
|
|
start() {
|
|
this._populateRoomToUser();
|
|
this.matrixClient.on("accountData", this._onAccountData);
|
|
}
|
|
|
|
stop() {
|
|
this.matrixClient.removeListener("accountData", this._onAccountData);
|
|
}
|
|
|
|
_onAccountData(ev) {
|
|
if (ev.getType() == 'm.direct') {
|
|
this.userToRooms = this.matrixClient.getAccountData('m.direct').getContent();
|
|
this._populateRoomToUser();
|
|
}
|
|
}
|
|
|
|
getDMRoomsForUserId(userId) {
|
|
// Here, we return the empty list if there are no rooms,
|
|
// since the number of conversations you have with this user is zero.
|
|
return this.userToRooms[userId] || [];
|
|
}
|
|
|
|
getUserIdForRoomId(roomId) {
|
|
if (this.roomToUser == null) {
|
|
// we lazily populate roomToUser so you can use
|
|
// this class just to call getDMRoomsForUserId
|
|
// which doesn't do very much, but is a fairly
|
|
// convenient wrapper and there's no point
|
|
// iterating through the map if getUserIdForRoomId()
|
|
// is never called.
|
|
this._populateRoomToUser();
|
|
}
|
|
// Here, we return undefined if the room is not in the map:
|
|
// the room ID you gave is not a DM room for any user.
|
|
if (this.roomToUser[roomId] === undefined) {
|
|
// no entry? if the room is an invite, look for the is_direct hint.
|
|
const room = this.matrixClient.getRoom(roomId);
|
|
if (room) {
|
|
const me = room.getMember(this.matrixClient.credentials.userId);
|
|
if (me.membership == 'invite') {
|
|
// The 'direct' hihnt is there, so declare that this is a DM room for
|
|
// whoever invited us.
|
|
if (me.events.member.getContent().is_direct) {
|
|
return me.events.member.getSender();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return this.roomToUser[roomId];
|
|
}
|
|
|
|
_populateRoomToUser() {
|
|
this.roomToUser = {};
|
|
for (const user of Object.keys(this.userToRooms)) {
|
|
for (const roomId of this.userToRooms[user]) {
|
|
this.roomToUser[roomId] = user;
|
|
}
|
|
}
|
|
}
|
|
}
|