signal-desktop/js/read_receipts.js
lilia 0cd7f84a05 Refactor read state tracking
Adds support for handling early arriving read receipts.

// FREEBIE
2016-04-14 11:57:52 -07:00

47 lines
1.7 KiB
JavaScript

/*
* vim: ts=4:sw=4:expandtab
*/
;(function() {
'use strict';
window.Whisper = window.Whisper || {};
Whisper.ReadReceipts = new (Backbone.Collection.extend({
initialize: function() {
this.on('add', this.onReceipt);
},
forMessage: function(message) {
var receipt = this.findWhere({
sender: message.get('source'),
timestamp: message.get('sent_at')
});
if (receipt) {
console.log('Found early read receipt for message');
this.remove(receipt);
return receipt;
}
},
onReceipt: function(receipt) {
var messages = new Whisper.MessageCollection();
messages.fetchSentAt(receipt.get('timestamp')).then(function() {
var message = messages.find(function(message) {
return (message.isIncoming() && message.isUnread() &&
message.get('source') === receipt.get('sender'));
});
if (message) {
this.remove(receipt);
message.markRead().then(function() {
var conversation = ConversationController.get({
id: message.get('conversationId')
});
if (conversation) {
// notify frontend listeners
conversation.trigger('read', message);
}
});
} else {
console.log('No message for read receipt');
}
}.bind(this));
}
}))();
})();