low_battery_notification.app.groovy

/**
 *  Battery Warning
 *
 */

// Automatically generated. Make future change here.
definition(
    name: "Low Battery Notification",
    namespace: "jscgs350",
    author: "SmartThings",
    description: "Alerts if any battery powered device falls below a specified percent.",
    category: "My Apps",
    iconUrl: "https://s3.amazonaws.com/smartapp-icons/Convenience/Cat-Convenience.png",
    iconX2Url: "https://s3.amazonaws.com/smartapp-icons/Convenience/Cat-Convenience%402x.png"
)

preferences {
	section("Battery Alarm Level") {
		input "alarmAt", "number", title: "Alert when below...", required: true
        input "batteryDevices", "capability.battery", title: "Which devices?", multiple: true
	}
    section( "Notifications" ) {
		input "phoneNumber", "phone", title: "Send a text message?", required: false
	}
}

def installed() {
	log.debug "Installed with settings: ${settings}"

	initialize()
}

def updated() {
	log.debug "Updated with settings: ${settings}"
    
	unschedule()

	initialize()
}

def initialize() {
	
    //schedule the job
    schedule("0 0 10am 1,15 * ?", doBatteryCheck)
    
    //run at install too
    doBatteryCheck()
    
}

def doBatteryCheck() {

	def belowLevelCntr = 0
    
    def pushMsg = ""
    
	for (batteryDevice in batteryDevices) {
    
    	def batteryLevel = batteryDevice.currentValue("battery")

        if ( batteryLevel <= settings.alarmAt.toInteger() ) {
			
            pushMsg += "${batteryDevice.name} named ${batteryDevice.label} is at: ${batteryLevel}% \n"
            
            belowLevelCntr++
        }
    }
    
    if ( belowLevelCntr ){
    
    	pushMsg = "You have ${belowLevelCntr} devices below the set alarm level. \n" + pushMsg
    
    } else {
    	
        pushMsg = "Battery Check App executed with no devices below alarm level"
    }
    
    log.debug(pushMsg)
    
    /* sendPush(pushMsg) */
    sendSms(phoneNumber,pushMsg)

}