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index.js
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index.js
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"use strict";
var merge = require('merge');
var Rapifire = function(config) {
var configToUse = merge({
url: 'wss://pubsub.sentaca.com:1443/pubsub',
debug: false,
onconnect: function() { console.log("Use new Rapifire({..., onconnect: fn, ...} to overwrite this function.");},
onpresence: function(e) {console.log("Use new Rapifire({..., onpresence: fn, ...} to overwrite this function.", e);},
onpresenceresponse: function(e) {console.log("Use new Rapifire({..., onpresenceresponse: fn, ...} to overwrite this function.", e);},
onsubscribe: function(e) {console.log("Use new Rapifire({..., onsubscribe: fn, ...} to overwrite this function.", e);}
}, config), debug = configToUse.debug || false;
if (debug) {
console.log(configToUse);
}
var verifyConfig = function(c) {
var verifyKey = function(t, k) {
if (t[k] === undefined || t[k] === null) {
throw "Please make sure that " + k + " is set via object constructor.";
}
};
verifyKey(c, "appId");
verifyKey(c, "authId");
verifyKey(c, "authKey");
};
var buildInitPacket = function(c) {
return {
"operation": "init",
"data": {
"appId" : c.appId,
"authId" : c.authId,
"authKey" : c.authKey
}
};
};
var buildSubscribePacket = function(channel, interactive) {
return {
"operation": "subscribe",
"data": {
"channel": channel,
"interactive": interactive
}
};
};
var connect = function(c, subs) {
var self = this;
var ws = new WebSocket(c.url);
var config = c;
ws.onopen = function() {
if (debug) { console.log("Connected to %s", c.url); }
ws.send(JSON.stringify(buildInitPacket(c)));
c.onconnect.apply(self);
};
ws.onmessage = function(message) {
var msg;
try {
msg = JSON.parse(message.data);
} catch(e) {
console.error("Received %s but cannot parse it to JSON %s", message.data, e);
throw e;
}
if (debug) { console.log("Received message: %O", msg); }
// {"authId":"697c3da3-9836-4486-b277-2b0a16ef74a0","type":"notification/channel","action":"CHANNEL_JOIN","channel":"85ca2671dca9831bb43baa43ecdd6c28"}
if(msg.type === "notification/channel" && typeof(config.onpresence) === 'function' ) {
config.onpresence.apply(self, [{channel: msg.channel, authId: msg.authId, action: msg.action}]);
} else if(msg.type === "presence" && typeof(config.onpresenceresponse) === 'function' ) {
// {"type":"presence","status":"OK","details":[{"channel":"0fb3198b2192d4ff92f6c165e6233ba6","authIds":["697c3da3-9836-4486-b277-2b0a16ef74a0","22165b61-2a52-4b71-bef4-45a16634da6d"]}]}
for(var i in msg.details) {
var detail = msg.details[i];
config.onpresenceresponse.apply(self, [detail]);
}
} else if(msg.type === "notification/subscription" && typeof(config.onsubscribe) === 'function' ) {
config.onsubscribe.apply(self, [{channel: msg.channel, authId: msg.authId}]);
} else if(msg.channel !== undefined && msg.channel !== null && subs[msg.channel]) {
subs[msg.channel].apply(self, [msg.message, msg.headers]);
}
};
return ws;
};
var subscriptions = {};
var ws = connect.apply(this, [configToUse, subscriptions]);
this.subscribe = function(subscriptionConfig) {
var channels = [];
if(Object.prototype.toString.call( subscriptionConfig.channel ) === '[object Array]') {
channels = subscriptionConfig.channel;
} else {
channels.push(subscriptionConfig.channel);
}
var len = channels.length, i = 0, channel;
for(i = 0; i < len; i++) {
channel = channels[i];
var send = (subscriptions[channels] === undefined);
subscriptions[channel] = subscriptionConfig.callback
if(send) {
ws.send(JSON.stringify(buildSubscribePacket(channel, subscriptionConfig.interactive)));
}
}
return this;
};
this.publish = function(channel, message) {
var packet = {
"operation": "publish",
"data": {
"channel": channel,
"message": JSON.parse(message)
}
};
ws.send(JSON.stringify(packet));
return this;
};
this.presence = function(channel) {
var packet = {
"operation" : "presence",
"data" : { "channel" : channel }
};
ws.send(JSON.stringify(packet));
};
this.disconnect = function() {
ws.close();
};
};
module.exports = Rapifire;