83 lines
2.9 KiB
JavaScript
83 lines
2.9 KiB
JavaScript
var Parse = require('parse/node').Parse;
|
|
var gcm = require('node-gcm');
|
|
var randomstring = require('randomstring');
|
|
|
|
var GCMTimeToLiveMax = 4 * 7 * 24 * 60 * 60; // GCM allows a max of 4 weeks
|
|
var GCMRegistrationTokensMax = 1000;
|
|
|
|
function GCM(apiKey) {
|
|
this.sender = new gcm.Sender(apiKey);
|
|
}
|
|
|
|
/**
|
|
* Send gcm request.
|
|
* @param {Object} data The data we need to send, the format is the same with api request body
|
|
* @param {Array} registrationTokens A array of registration tokens
|
|
* @returns {Object} A promise which is resolved after we get results from gcm
|
|
*/
|
|
GCM.prototype.send = function (data, registrationTokens) {
|
|
if (registrationTokens.length >= GCMRegistrationTokensMax) {
|
|
throw new Parse.Error(Parse.Error.PUSH_MISCONFIGURED,
|
|
'Too many registration tokens for a GCM request.');
|
|
}
|
|
var pushId = randomstring.generate({
|
|
length: 10,
|
|
charset: 'alphanumeric'
|
|
});
|
|
var timeStamp = Date.now();
|
|
var expirationTime;
|
|
// We handle the expiration_time convertion in push.js, so expiration_time is a valid date
|
|
// in Unix epoch time in milliseconds here
|
|
if (data['expiration_time']) {
|
|
expirationTime = data['expiration_time'];
|
|
}
|
|
// Generate gcm payload
|
|
var gcmPayload = generateGCMPayload(data.data, pushId, timeStamp, expirationTime);
|
|
// Make and send gcm request
|
|
var message = new gcm.Message(gcmPayload);
|
|
var promise = new Parse.Promise();
|
|
this.sender.send(message, { registrationTokens: registrationTokens }, 5, function (error, response) {
|
|
// TODO: Use the response from gcm to generate and save push report
|
|
// TODO: If gcm returns some deviceTokens are invalid, set tombstone for the installation
|
|
promise.resolve();
|
|
});
|
|
return promise;
|
|
}
|
|
|
|
/**
|
|
* Generate the gcm payload from the data we get from api request.
|
|
* @param {Object} coreData The data field under api request body
|
|
* @param {String} pushId A random string
|
|
* @param {Number} timeStamp A number whose format is the Unix Epoch
|
|
* @param {Number|undefined} expirationTime A number whose format is the Unix Epoch or undefined
|
|
* @returns {Object} A promise which is resolved after we get results from gcm
|
|
*/
|
|
var generateGCMPayload = function(coreData, pushId, timeStamp, expirationTime) {
|
|
var payloadData = {
|
|
'time': new Date(timeStamp).toISOString(),
|
|
'push_id': pushId,
|
|
'data': JSON.stringify(coreData)
|
|
}
|
|
var payload = {
|
|
priority: 'normal',
|
|
data: payloadData
|
|
};
|
|
if (expirationTime) {
|
|
// The timeStamp and expiration is in milliseconds but gcm requires second
|
|
var timeToLive = Math.floor((expirationTime - timeStamp) / 1000);
|
|
if (timeToLive < 0) {
|
|
timeToLive = 0;
|
|
}
|
|
if (timeToLive >= GCMTimeToLiveMax) {
|
|
timeToLive = GCMTimeToLiveMax;
|
|
}
|
|
payload.timeToLive = timeToLive;
|
|
}
|
|
return payload;
|
|
}
|
|
|
|
if (typeof process !== 'undefined' && process.env.NODE_ENV === 'test') {
|
|
GCM.generateGCMPayload = generateGCMPayload;
|
|
}
|
|
module.exports = GCM;
|