139 lines
3.6 KiB
TypeScript
139 lines
3.6 KiB
TypeScript
// Copyright 2016-2021 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 { ConversationModel } from '../models/conversations';
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import { MessageModel } from '../models/messages';
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import { MessageModelCollectionType } from '../model-types.d';
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import { isOutgoing } from '../state/selectors/message';
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type ReadReceiptAttributesType = {
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reader: string;
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timestamp: number;
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readAt: number;
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};
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class ReadReceiptModel extends Model<ReadReceiptAttributesType> {}
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let singleton: ReadReceipts | undefined;
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async function getTargetMessage(
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reader: string,
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messages: MessageModelCollectionType
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): Promise<MessageModel | null> {
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if (messages.length === 0) {
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return null;
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}
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const message = messages.find(
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item => isOutgoing(item.attributes) && reader === item.get('conversationId')
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);
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if (message) {
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return window.MessageController.register(message.id, message);
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}
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const groups = await window.Signal.Data.getAllGroupsInvolvingId(reader, {
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ConversationCollection: window.Whisper.ConversationCollection,
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});
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const ids = groups.pluck('id');
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ids.push(reader);
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const target = messages.find(
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item =>
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isOutgoing(item.attributes) && ids.includes(item.get('conversationId'))
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);
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if (!target) {
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return null;
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}
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return window.MessageController.register(target.id, target);
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}
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export class ReadReceipts extends Collection<ReadReceiptModel> {
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static getSingleton(): ReadReceipts {
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if (!singleton) {
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singleton = new ReadReceipts();
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}
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return singleton;
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}
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forMessage(
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conversation: ConversationModel,
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message: MessageModel
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): Array<ReadReceiptModel> {
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if (!isOutgoing(message.attributes)) {
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return [];
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}
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let ids: Array<string>;
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if (conversation.isPrivate()) {
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ids = [conversation.id];
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} else {
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ids = conversation.getMemberIds();
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}
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const receipts = this.filter(
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receipt =>
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receipt.get('timestamp') === message.get('sent_at') &&
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ids.includes(receipt.get('reader'))
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);
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if (receipts.length) {
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window.log.info('Found early read receipts for message');
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this.remove(receipts);
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}
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return receipts;
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}
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async onReceipt(receipt: ReadReceiptModel): Promise<void> {
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try {
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const messages = await window.Signal.Data.getMessagesBySentAt(
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receipt.get('timestamp'),
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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 message = await getTargetMessage(receipt.get('reader'), messages);
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if (!message) {
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window.log.info(
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'No message for read receipt',
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receipt.get('reader'),
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receipt.get('timestamp')
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);
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return;
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}
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const readBy = message.get('read_by') || [];
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const expirationStartTimestamp = message.get('expirationStartTimestamp');
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readBy.push(receipt.get('reader'));
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message.set({
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read_by: readBy,
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expirationStartTimestamp: expirationStartTimestamp || Date.now(),
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sent: true,
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});
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window.Signal.Util.queueUpdateMessage(message.attributes);
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// notify frontend listeners
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const conversation = window.ConversationController.get(
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message.get('conversationId')
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);
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const updateLeftPane = conversation
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? conversation.debouncedUpdateLastMessage
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: undefined;
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if (updateLeftPane) {
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updateLeftPane();
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}
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this.remove(receipt);
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} catch (error) {
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window.log.error(
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'ReadReceipts.onReceipt 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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