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node_helper.js
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node_helper.js
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/* Magic Mirror
* Node Helper: MMM-Volume
*
* By [email protected]
* MIT Licensed.
*/
var exec = require('child_process').exec
var NodeHelper = require("node_helper");
module.exports = NodeHelper.create({
start : function() {
this.config = {}
},
socketNotificationReceived : function(notification, payload) {
if (notification === "CONFIG") {
this.config = payload
if (this.config.volumeOnStart !== null) {
this.setVolume(this.config.volumeOnStart, (volume)=>{
this.sendSocketNotification("VOLUME_RESULT", volume)
})
}
}
switch (notification) {
case this.config.notifications.VOLUME_GET:
this.getVolume((volume)=>{
this.sendSocketNotification("VOLUME_RESULT", volume)
})
break
case this.config.notifications.VOLUME_SET:
this.setVolume(payload, (volume)=>{
this.sendSocketNotification("VOLUME_RESULT", volume)
})
break
}
},
getVolume: function(callback=null) {
exec (this.config.getVolumeScript, (err, stdout, stderr)=>{
if (err) {
console.log("[VOLUME] Get Volume Error:", err)
} else {
var volume = parseInt(stdout)
console.log("[VOLUME] Get Volume:",volume)
if (callback) {
callback(volume)
}
}
})
},
setVolume: function(volume, callback=null) {
var script = this.config.setVolumeScript.replace("#VOLUME#", volume)
exec (script, (err, stdout, stderr)=>{
if (err) {
console.log("[VOLUME] Set Volume Error:", err)
} else {
console.log("[VOLUME] Set Volume To:", volume)
if (callback) {
callback(volume)
}
}
})
}
})