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session-desktop/js/read_receipts.js

80 lines
3.2 KiB
JavaScript

/*
* vim: ts=4:sw=4:expandtab
*/
;(function() {
'use strict';
window.Whisper = window.Whisper || {};
Whisper.ReadReceipts = new (Backbone.Collection.extend({
forMessage: function(conversation, message) {
if (!message.isOutgoing()) {
return [];
}
var ids = [];
if (conversation.isPrivate()) {
ids = [conversation.id];
} else {
ids = conversation.get('members');
}
var receipts = this.filter(function(receipt) {
return receipt.get('timestamp') === message.get('sent_at')
&& _.contains(ids, receipt.get('reader'));
});
if (receipts.length) {
console.log('Found early read receipts for message');
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.isOutgoing() && receipt.get('reader') === message.get('conversationId'));
});
if (message) { return message; }
var groups = new Whisper.GroupCollection();
return groups.fetchGroups(receipt.get('reader')).then(function() {
var ids = groups.pluck('id');
ids.push(receipt.get('reader'));
return messages.find(function(message) {
return (message.isOutgoing() &&
_.contains(ids, message.get('conversationId')));
});
});
}).then(function(message) {
if (message) {
var read_by = message.get('read_by') || [];
read_by.push(receipt.get('reader'));
return new Promise(function(resolve, reject) {
message.save({ read_by: read_by }).then(function() {
// notify frontend listeners
var conversation = ConversationController.get(
message.get('conversationId')
);
if (conversation) {
conversation.trigger('read', message);
}
this.remove(receipt);
resolve();
}.bind(this), reject);
}.bind(this));
} else {
console.log(
'No message for read receipt',
receipt.get('reader'),
receipt.get('timestamp')
);
}
}.bind(this)).catch(function(error) {
console.log(
'ReadReceipts.onReceipt error:',
error && error.stack ? error.stack : error
);
});
},
}))();
})();