signal-desktop/js/delivery_receipts.js
2018-04-30 16:53:34 -04:00

102 lines
3.3 KiB
JavaScript

(function() {
'use strict';
window.Whisper = window.Whisper || {};
Whisper.DeliveryReceipts = new (Backbone.Collection.extend({
forMessage: function(conversation, message) {
var recipients;
if (conversation.isPrivate()) {
recipients = [conversation.id];
} else {
recipients = conversation.get('members') || [];
}
var receipts = this.filter(function(receipt) {
return (
receipt.get('timestamp') === message.get('sent_at') &&
recipients.indexOf(receipt.get('source')) > -1
);
});
this.remove(receipts);
return receipts;
},
onReceipt: function(receipt) {
var messages = new Whisper.MessageCollection();
return messages
.fetchSentAt(receipt.get('timestamp'))
.then(function() {
if (messages.length === 0) {
return;
}
var message = messages.find(function(message) {
return (
!message.isIncoming() &&
receipt.get('source') === message.get('conversationId')
);
});
if (message) {
return message;
}
var groups = new Whisper.GroupCollection();
return groups.fetchGroups(receipt.get('source')).then(function() {
var ids = groups.pluck('id');
ids.push(receipt.get('source'));
return messages.find(function(message) {
return (
!message.isIncoming() &&
_.contains(ids, message.get('conversationId'))
);
});
});
})
.then(
function(message) {
if (message) {
var deliveries = message.get('delivered') || 0;
var delivered_to = message.get('delivered_to') || [];
return new Promise(
function(resolve, reject) {
message
.save({
delivered_to: _.union(delivered_to, [
receipt.get('source'),
]),
delivered: deliveries + 1,
})
.then(
function() {
// notify frontend listeners
var conversation = ConversationController.get(
message.get('conversationId')
);
if (conversation) {
conversation.trigger('delivered', message);
}
this.remove(receipt);
resolve();
}.bind(this),
reject
);
}.bind(this)
);
// TODO: consider keeping a list of numbers we've
// successfully delivered to?
} else {
console.log(
'No message for delivery receipt',
receipt.get('source'),
receipt.get('timestamp')
);
}
}.bind(this)
)
.catch(function(error) {
console.log(
'DeliveryReceipts.onReceipt error:',
error && error.stack ? error.stack : error
);
});
},
}))();
})();