embark-area-51/js/embarkjs/orbit.js

72 lines
1.7 KiB
JavaScript

EmbarkJS.Messages.Orbit = {};
EmbarkJS.Messages.Orbit.sendMessage = function(options) {
var topics = options.topic || options.topics;
var data = options.data || options.payload;
if (topics === undefined) {
throw new Error("missing option: topic");
}
if (data === undefined) {
throw new Error("missing option: data");
}
if (typeof topics === 'string') {
topics = topics;
} else {
// TODO: better to just send to different channels instead
topics = topics.join(',');
}
this.orbit.join(topics);
var payload = JSON.stringify(data);
this.orbit.send(topics, data);
};
EmbarkJS.Messages.Orbit.listenTo = function(options) {
var self = this;
var topics = options.topic || options.topics;
if (typeof topics === 'string') {
topics = topics;
} else {
topics = topics.join(',');
}
this.orbit.join(topics);
var messageEvents = function() {
this.cb = function() {};
};
messageEvents.prototype.then = function(cb) {
this.cb = cb;
};
messageEvents.prototype.error = function(err) {
return err;
};
var promise = new messageEvents();
this.orbit.events.on('message', (channel, message) => {
// TODO: looks like sometimes it's receving messages from all topics
if (topics !== channel) return;
self.orbit.getPost(message.payload.value, true).then((post) => {
var data = {
topic: channel,
data: post.content,
from: post.meta.from.name,
time: (new Date(post.meta.ts))
};
promise.cb(post.content, data, post);
});
});
return promise;
};