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Use Sets instead of array scans and simplify hiding of invalid users when inviting #4004

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merged 3 commits into from
Jan 30, 2020
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Use Sets instead of array scans and simplify hiding of invalid users when inviting #4004

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Use Sets instead of array scans and simplify hiding of invalid users …
t3chguy Jan 30, 2020
1e09399
delint and collapse two consecutive filter operations
t3chguy Jan 30, 2020
7db6f89
hmm, there were two things using the client :((
t3chguy Jan 30, 2020
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25 changes: 11 additions & 14 deletions src/components/views/dialogs/InviteDialog.js
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Original file line number Diff line number Diff line change
Expand Up @@ -301,18 +301,16 @@ export default class InviteDialog extends React.PureComponent {
throw new Error("When using KIND_INVITE a roomId is required for an InviteDialog");
}

let alreadyInvited = [];
const alreadyInvited = new Set([MatrixClientPeg.get().getUserId(), SdkConfig.get()['welcomeUserId']]);
if (props.roomId) {
const room = MatrixClientPeg.get().getRoom(props.roomId);
if (!room) throw new Error("Room ID given to InviteDialog does not look like a room");
alreadyInvited = [
...room.getMembersWithMembership('invite'),
...room.getMembersWithMembership('join'),
...room.getMembersWithMembership('ban'), // so we don't try to invite them
].map(m => m.userId);
room.getMembersWithMembership('invite').forEach(m => alreadyInvited.add(m.userId));
room.getMembersWithMembership('join').forEach(m => alreadyInvited.add(m.userId));
// add banned users, so we don't try to invite them
room.getMembersWithMembership('ban').forEach(m => alreadyInvited.add(m.userId));
}


this.state = {
targets: [], // array of Member objects (see interface above)
filterText: "",
Expand All @@ -333,12 +331,12 @@ export default class InviteDialog extends React.PureComponent {
this._editorRef = createRef();
}

_buildRecents(excludedTargetIds: string[]): {userId: string, user: RoomMember, lastActive: number} {
_buildRecents(excludedTargetIds: Set<string>): {userId: string, user: RoomMember, lastActive: number} {
const rooms = DMRoomMap.shared().getUniqueRoomsWithIndividuals();
const recents = [];
for (const userId in rooms) {
// Filter out user IDs that are already in the room / should be excluded
if (excludedTargetIds.includes(userId)) {
if (excludedTargetIds.has(userId)) {
console.warn(`[Invite:Recents] Excluding ${userId} from recents`);
continue;
}
Expand Down Expand Up @@ -381,10 +379,9 @@ export default class InviteDialog extends React.PureComponent {
return recents;
}

_buildSuggestions(excludedTargetIds: string[]): {userId: string, user: RoomMember} {
_buildSuggestions(excludedTargetIds: Set<string>): {userId: string, user: RoomMember} {
const maxConsideredMembers = 200;
const client = MatrixClientPeg.get();
const excludedUserIds = [client.getUserId(), SdkConfig.get()['welcomeUserId']];
const joinedRooms = client.getRooms()
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.filter(r => r.getMyMembership() === 'join')
.filter(r => r.getJoinedMemberCount() <= maxConsideredMembers);
Expand All @@ -396,10 +393,10 @@ export default class InviteDialog extends React.PureComponent {
return members; // Do nothing
}

const joinedMembers = room.getJoinedMembers().filter(u => !excludedUserIds.includes(u.userId));
const joinedMembers = room.getJoinedMembers().filter(u => !excludedTargetIds.has(u.userId));
for (const member of joinedMembers) {
// Filter out user IDs that are already in the room / should be excluded
if (excludedTargetIds.includes(member.userId)) {
if (excludedTargetIds.has(member.userId)) {
continue;
}

Expand Down Expand Up @@ -456,7 +453,7 @@ export default class InviteDialog extends React.PureComponent {
const events = room.getLiveTimeline().getEvents(); // timelines are most recent last
for (let i = events.length - 1; i >= Math.max(0, events.length - maxMessagesConsidered); i--) {
const ev = events[i];
if (excludedUserIds.includes(ev.getSender())) {
if (excludedTargetIds.has(ev.getSender())) {
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this was not skipping on the members already in the room

continue;
}
if (ev.getTs() <= earliestAgeConsidered) {
Expand Down