105 lines
2.7 KiB
TypeScript
105 lines
2.7 KiB
TypeScript
// Copyright 2020-2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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/* eslint-disable max-classes-per-file */
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import { Collection, Model } from 'backbone';
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import { MessageModel } from '../models/messages';
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type DeleteAttributesType = {
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targetSentTimestamp: number;
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serverTimestamp: number;
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fromId: string;
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};
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export class DeleteModel extends Model<DeleteAttributesType> {}
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let singleton: Deletes | undefined;
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export class Deletes extends Collection<DeleteModel> {
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static getSingleton(): Deletes {
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if (!singleton) {
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singleton = new Deletes();
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}
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return singleton;
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}
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forMessage(message: MessageModel): Array<DeleteModel> {
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const matchingDeletes = this.filter(item => {
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return (
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item.get('targetSentTimestamp') === message.get('sent_at') &&
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item.get('fromId') === message.getContactId()
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);
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});
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if (matchingDeletes.length > 0) {
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window.log.info('Found early DOE for message');
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this.remove(matchingDeletes);
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return matchingDeletes;
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}
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return [];
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}
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async onDelete(del: DeleteModel): Promise<void> {
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try {
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// The conversation the deleted message was in; we have to find it in the database
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// to to figure that out.
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const targetConversation = await window.ConversationController.getConversationForTargetMessage(
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del.get('fromId'),
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del.get('targetSentTimestamp')
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);
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if (!targetConversation) {
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window.log.info(
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'No target conversation for DOE',
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del.get('fromId'),
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del.get('targetSentTimestamp')
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);
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return;
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}
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// Do not await, since this can deadlock the queue
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targetConversation.queueJob('Deletes.onDelete', async () => {
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window.log.info('Handling DOE for', del.get('targetSentTimestamp'));
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const messages = await window.Signal.Data.getMessagesBySentAt(
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del.get('targetSentTimestamp'),
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{
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MessageCollection: window.Whisper.MessageCollection,
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}
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);
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const targetMessage = messages.find(
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m => del.get('fromId') === m.getContactId()
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);
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if (!targetMessage) {
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window.log.info(
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'No message for DOE',
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del.get('fromId'),
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del.get('targetSentTimestamp')
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);
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return;
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}
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const message = window.MessageController.register(
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targetMessage.id,
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targetMessage
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);
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await window.Signal.Util.deleteForEveryone(message, del);
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this.remove(del);
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});
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} catch (error) {
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window.log.error(
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'Deletes.onDelete error:',
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error && error.stack ? error.stack : error
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);
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}
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}
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}
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