signal-desktop/js/read_syncs.js
2020-11-04 13:03:13 -06:00

110 lines
3.4 KiB
JavaScript

// Copyright 2017-2020 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
/* global
Backbone,
Whisper,
MessageController
*/
/* eslint-disable more/no-then */
// eslint-disable-next-line func-names
(function() {
window.Whisper = window.Whisper || {};
Whisper.ReadSyncs = new (Backbone.Collection.extend({
forMessage(message) {
const senderId = window.ConversationController.ensureContactIds({
e164: message.get('source'),
uuid: message.get('sourceUuid'),
});
const receipt = this.findWhere({
senderId,
timestamp: message.get('sent_at'),
});
if (receipt) {
window.log.info('Found early read sync for message');
this.remove(receipt);
return receipt;
}
return null;
},
async onReceipt(receipt) {
try {
const messages = await window.Signal.Data.getMessagesBySentAt(
receipt.get('timestamp'),
{
MessageCollection: Whisper.MessageCollection,
}
);
const found = messages.find(item => {
const senderId = window.ConversationController.ensureContactIds({
e164: item.get('source'),
uuid: item.get('sourceUuid'),
});
return item.isIncoming() && senderId === receipt.get('senderId');
});
if (found) {
Whisper.Notifications.removeBy({ messageId: found.id });
} else {
window.log.info(
'No message for read sync',
receipt.get('senderId'),
receipt.get('sender'),
receipt.get('senderUuid'),
receipt.get('timestamp')
);
return;
}
const message = MessageController.register(found.id, found);
const readAt = receipt.get('read_at');
// If message is unread, we mark it read. Otherwise, we update the expiration
// timer to the time specified by the read sync if it's earlier than
// the previous read time.
if (message.isUnread()) {
await message.markRead(readAt, { skipSave: true });
// onReadMessage may result in messages older than this one being
// marked read. We want those messages to have the same expire timer
// start time as this one, so we pass the readAt value through.
const conversation = message.getConversation();
if (conversation) {
conversation.onReadMessage(message, readAt);
}
} else {
const now = Date.now();
const existingTimestamp = message.get('expirationStartTimestamp');
const expirationStartTimestamp = Math.min(
now,
Math.min(existingTimestamp || now, readAt || now)
);
message.set({ expirationStartTimestamp });
const force = true;
await message.setToExpire(force, { skipSave: true });
const conversation = message.getConversation();
if (conversation) {
conversation.trigger('expiration-change', message);
}
}
await window.Signal.Data.saveMessage(message.attributes, {
Message: Whisper.Message,
});
this.remove(receipt);
} catch (error) {
window.log.error(
'ReadSyncs.onReceipt error:',
error && error.stack ? error.stack : error
);
}
},
}))();
})();