signal-desktop/js/read_receipts.js
2021-05-06 21:15:25 -04:00

124 lines
3.3 KiB
JavaScript

// Copyright 2016-2020 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
/* global
Whisper,
Backbone,
_,
ConversationController,
MessageController,
*/
/* eslint-disable more/no-then */
// eslint-disable-next-line func-names
(function () {
window.Whisper = window.Whisper || {};
Whisper.ReadReceipts = new (Backbone.Collection.extend({
forMessage(conversation, message) {
if (!message.isOutgoing()) {
return [];
}
let ids = [];
if (conversation.isPrivate()) {
ids = [conversation.id];
} else {
ids = conversation.getMemberIds();
}
const receipts = this.filter(
receipt =>
receipt.get('timestamp') === message.get('sent_at') &&
_.contains(ids, receipt.get('reader'))
);
if (receipts.length) {
window.log.info('Found early read receipts for message');
this.remove(receipts);
}
return receipts;
},
async getTargetMessage(reader, messages) {
if (messages.length === 0) {
return null;
}
const message = messages.find(
item => item.isOutgoing() && reader === item.get('conversationId')
);
if (message) {
return MessageController.register(message.id, message);
}
const groups = await window.Signal.Data.getAllGroupsInvolvingId(reader, {
ConversationCollection: Whisper.ConversationCollection,
});
const ids = groups.pluck('id');
ids.push(reader);
const target = messages.find(
item => item.isOutgoing() && _.contains(ids, item.get('conversationId'))
);
if (!target) {
return null;
}
return MessageController.register(target.id, target);
},
async onReceipt(receipt) {
try {
const messages = await window.Signal.Data.getMessagesBySentAt(
receipt.get('timestamp'),
{
MessageCollection: Whisper.MessageCollection,
}
);
const message = await this.getTargetMessage(
receipt.get('reader'),
messages
);
if (!message) {
window.log.info(
'No message for read receipt',
receipt.get('reader'),
receipt.get('timestamp')
);
return;
}
const readBy = message.get('read_by') || [];
const expirationStartTimestamp = message.get(
'expirationStartTimestamp'
);
readBy.push(receipt.get('reader'));
message.set({
read_by: readBy,
expirationStartTimestamp: expirationStartTimestamp || Date.now(),
sent: true,
});
if (message.isExpiring() && !expirationStartTimestamp) {
// TODO DESKTOP-1509: use setToExpire once this is TS
await message.setToExpire(false, { skipSave: true });
}
window.Signal.Util.queueUpdateMessage(message.attributes);
// notify frontend listeners
const conversation = ConversationController.get(
message.get('conversationId')
);
if (conversation) {
conversation.trigger('read', message);
}
this.remove(receipt);
} catch (error) {
window.log.error(
'ReadReceipts.onReceipt error:',
error && error.stack ? error.stack : error
);
}
},
}))();
})();