code

/**
 *  This application monitors presence sennsors and will send out an update
 *	if they are not present for a user-defined amount of time.  It will 
 *	continue to send updates at the same interval until presence is detected.
 *
 *  Author: Miguel Corteguera (created from a combination of SmartThings
 *	presence and garage door monitoring apps)
 */

// Automatically generated. Make future change here.
definition(
    name: "DoggieMonitor",
    namespace: "",
    author: "Miguel Corteguera",
    description: "Presence sensor delayed inform",
    category: "My Apps",
    iconUrl: "https://s3.amazonaws.com/smartapp-icons/Convenience/Cat-Convenience.png",
    iconX2Url: "https://s3.amazonaws.com/smartapp-icons/Convenience/Cat-Convenience@2x.png",
    oauth: true)

preferences {
	section("When a presence sensor arrives or departs this location..") {
		input "presence", "capability.presenceSensor", title: "Which sensor?"
	}
	section("For too long...") {
		input "maxGoneTime", "number", title: "Minutes?"
	}
	section("Text me at (optional, sends a push notification if not specified)...") {
		input "phone", "phone", title: "Phone number?", required: false
	}
}


def installed() {
	subscribe(presence, "presence", presenceHandler)
}

def updated() {
	unsubscribe()
	subscribe(presence, "presence", presenceHandler)
}

def presenceHandler(evt) {
	def isNotScheduled = state.status != "scheduled"
	if (evt.value == "present") {
		log.debug "${presence.label ?: presence.name} has arrived at the ${location}"
		clearSmsHistory()
		clearStatus()
	} else if (evt.value == "not present") {
		log.debug "${presence.label ?: presence.name} has left the ${location}"
		runIn(maxGoneTime * 60, takeAction, [overwrite: false])
		state.status = "scheduled"
	}

}

def takeAction(){
	if (state.status == "scheduled")
	{
		def deltaMillis = 1000 * 60 * maxGoneTime
		def timeAgo = new Date(now() - deltaMillis)
		def goneTooLong = presence.presenceState.dateCreated.toSystemDate() < timeAgo

		def recentTexts = state.smsHistory.find { it.sentDate.toSystemDate() > timeAgo }

		if (!recentTexts) {
			sendTextMessage()
		}
		runIn(maxGoneTime * 60, takeAction, [overwrite: false])
	} else {
		log.trace "Status is no longer scheduled. Not sending text."
	}
}

def sendTextMessage() {
	log.debug "$presence has been gone too long, texting $phone"

	updateSmsHistory()
	def goneMinutes = maxGoneTime * (state.smsHistory?.size() ?: 1)
	def msg = "Your ${presence.label ?: presence.name} has been gone for more than ${goneMinutes} minutes!"
	if (phone) {
		sendSms(phone, msg)
	}
	else {
		sendPush msg
	}
}

def updateSmsHistory() {
	if (!state.smsHistory) state.smsHistory = []

	if(state.smsHistory.size() > 9) {
		log.debug "SmsHistory is too big, reducing size"
		state.smsHistory = state.smsHistory[-9..-1]
	}
	state.smsHistory << [sentDate: new Date().toSystemFormat()]
}

def clearSmsHistory() {
	state.smsHistory = null
}

def clearStatus() {
	state.status = null
}