70 lines
2 KiB
TypeScript
70 lines
2 KiB
TypeScript
// Copyright 2020 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import type { DeleteAttributesType } from '../messageModifiers/Deletes';
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import type { MessageModel } from '../models/messages';
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import * as log from '../logging/log';
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import { DAY } from './durations';
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import { isMe } from './whatTypeOfConversation';
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import { getContactId } from '../messages/helpers';
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import { isStory } from '../state/selectors/message';
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export async function deleteForEveryone(
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message: MessageModel,
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doe: Pick<
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DeleteAttributesType,
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'fromId' | 'targetSentTimestamp' | 'serverTimestamp'
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>,
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shouldPersist = true
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): Promise<void> {
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if (isDeletionByMe(message, doe)) {
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const conversation = message.getConversation();
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// Our 1:1 stories are deleted through ts/util/onStoryRecipientUpdate.ts
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if (
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isStory(message.attributes) &&
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conversation &&
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isMe(conversation.attributes)
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) {
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return;
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}
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await message.handleDeleteForEveryone(doe, shouldPersist);
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return;
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}
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if (isDeletionTooOld(message, doe)) {
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log.warn('Received late DOE. Dropping.', {
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fromId: doe.fromId,
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targetSentTimestamp: doe.targetSentTimestamp,
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messageServerTimestamp: message.get('serverTimestamp'),
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messageSentAt: message.get('sent_at'),
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deleteServerTimestamp: doe.serverTimestamp,
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});
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return;
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}
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await message.handleDeleteForEveryone(doe, shouldPersist);
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}
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function isDeletionByMe(
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message: Readonly<MessageModel>,
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doe: Pick<DeleteAttributesType, 'fromId'>
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): boolean {
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const ourConversationId =
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window.ConversationController.getOurConversationIdOrThrow();
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return (
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getContactId(message.attributes) === ourConversationId &&
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doe.fromId === ourConversationId
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);
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}
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function isDeletionTooOld(
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message: Readonly<MessageModel>,
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doe: Pick<DeleteAttributesType, 'serverTimestamp'>
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): boolean {
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const messageTimestamp =
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message.get('serverTimestamp') || message.get('sent_at') || 0;
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const delta = Math.abs(doe.serverTimestamp - messageTimestamp);
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return delta > DAY * 2;
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}
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