ThermostatAutoAway.groovy

/**
 *  Thermostat Auto Away
 *
 *  Author: sidjohn1@gmail.com
 *  Date: 2013-12-04
 */
 

// Automatically generated. Make future change here.
definition(
    name: "Thermostat Auto Away",
    namespace: "sidjohn1",
    author: "sidjohn1@gmail.com",
    description: "Simply marks any thermostat away after everyone leaves. Great for Nest!",
    category: "Green Living",
    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("When all of these people leave home") {
		input "people", "capability.presenceSensor", multiple: true, required: true
	}
	section("Set this thermostat to away ") {
		input "thermostats", "capability.thermostat", multiple: true, required: true
	}
	section("False alarm threshold (defaults to 10 min)") {
		input "falseAlarmThreshold", "decimal", title: "Number of minutes", required: false
	}
}

def installed() {
	log.debug "Installed with settings: ${settings}"
	log.debug "Current mode = ${location.mode}, people = ${people.collect{it.label + ': ' + it.currentPresence}}"
	subscribe(people, "presence", presence)
}

def updated() {
	log.debug "Updated with settings: ${settings}"
	log.debug "Current mode = ${location.mode}, people = ${people.collect{it.label + ': ' + it.currentPresence}}"
	unsubscribe()
	subscribe(people, "presence", presence)
}

def presence(evt)
{
	log.debug "evt.name: $evt.value"
	if (evt.value == "not present") {
		if (location.mode != newMode) {
			log.debug "checking if everyone is away"
			if (everyoneIsAway()) {
				log.debug "starting sequence"
				runIn(findFalseAlarmThreshold() * 60, "takeAction", [overwrite: false])
			}
		}
		else {
			log.debug "mode is the same, not evaluating"
		}
	}
	else {
		log.debug "present; doing nothing"
	}
}

def takeAction()
{
	if (everyoneIsAway()) {
		def threshold = 1000 * 60 * findFalseAlarmThreshold() - 1000
		def awayLongEnough = people.findAll { person ->
			def presenceState = person.currentState("presence")
			def elapsed = now() - presenceState.rawDateCreated.time
			elapsed >= threshold
		}
		log.debug "Found ${awayLongEnough.size()} out of ${people.size()} person(s) who were away long enough"
		if (awayLongEnough.size() == people.size()) {
			def message = "SmartThings changed your thermostat to away because everyone left home"
			log.info message
			thermostats?.away()
		} else {
			log.debug "not everyone has been away long enough; doing nothing"
		}
	} else {
    	log.debug "not everyone is away; doing nothing"
    }
}

private everyoneIsAway()
{
	def result = true
	for (person in people) {
		if (person.currentPresence == "present") {
			result = false
			break
		}
	}
	log.debug "everyoneIsAway: $result"
	return result
}

private findFalseAlarmThreshold() {
	(falseAlarmThreshold != null && falseAlarmThreshold != "") ? falseAlarmThreshold : 10
}