Michael Telatynski
80 lines
2.6 KiB
TypeScript
80 lines
2.6 KiB
TypeScript
/*
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Copyright 2021 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import { MatrixClient } from "./client";
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import { IEvent, MatrixEvent, MatrixEventEvent } from "./models/event";
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export type EventMapper = (obj: Partial<IEvent>) => MatrixEvent;
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export interface MapperOpts {
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preventReEmit?: boolean;
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decrypt?: boolean;
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}
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export function eventMapperFor(client: MatrixClient, options: MapperOpts): EventMapper {
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let preventReEmit = Boolean(options.preventReEmit);
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const decrypt = options.decrypt !== false;
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function mapper(plainOldJsObject: Partial<IEvent>) {
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const room = client.getRoom(plainOldJsObject.room_id);
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let event: MatrixEvent;
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// If the event is already known to the room, let's re-use the model rather than duplicating.
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// We avoid doing this to state events as they may be forward or backwards looking which tweaks behaviour.
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if (room && plainOldJsObject.state_key === undefined) {
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event = room.findEventById(plainOldJsObject.event_id);
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}
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if (!event || event.status) {
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event = new MatrixEvent(plainOldJsObject);
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} else {
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// merge the latest unsigned data from the server
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event.setUnsigned({ ...event.getUnsigned(), ...plainOldJsObject.unsigned });
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// prevent doubling up re-emitters
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preventReEmit = true;
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}
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const thread = room?.findThreadForEvent(event);
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if (thread) {
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event.setThread(thread);
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}
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if (event.isEncrypted()) {
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if (!preventReEmit) {
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client.reEmitter.reEmit(event, [
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MatrixEventEvent.Decrypted,
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]);
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}
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if (decrypt) {
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client.decryptEventIfNeeded(event);
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}
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}
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if (!preventReEmit) {
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client.reEmitter.reEmit(event, [
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MatrixEventEvent.Replaced,
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MatrixEventEvent.VisibilityChange,
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]);
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room?.reEmitter.reEmit(event, [
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MatrixEventEvent.BeforeRedaction,
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]);
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}
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return event;
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}
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return mapper;
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}
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