Debounce switches in SmartThings via switches, contact, and motion sensors.

settimeout.groovy

definition(
    name: "setTimeout",
    namespace: "cramforce",
    author: "Malte",
    description: "Debounce switches based on switches, contact, and motion sensors.",
    category: "Convenience",
    iconUrl: "https://png.pngtree.com/svg/20170719/react_1353128.png",
    iconX2Url: "https://png.pngtree.com/svg/20170719/react_1353128.png"
)

preferences {
	section("Debounce on motion"){
		input "motion", "capability.motionSensor", title: "Motion sensors", multiple: true
	}
    section("Debounce on door open"){
		input "contact", "capability.contactSensor", title: "Contact sensors", multiple: true
	}
	section("And off after minutes..."){
		input "minutes", "number", title: "Minutes?"
	}
	section("Turn on/off light(s)..."){
		input "switches", "capability.switch", multiple: true
	}
}

def installed() {
	subscribe(motion, "motion", stateChanged)
    subscribe(contact, "contact", stateChanged)
    subscribe(switches, "switch", stateChanged)
}

def updated() {
	unsubscribe()
	installed()
}

def stateChanged(evt) {
	log.debug "$evt.name: $evt.value"
	if (evt.value == "on") {
		log.info "Switched turned on: ${evt.description}"
		maybeDebounce();
        return;
	}
    if (evt.value == "off") {
		log.info "Switched turned on: ${evt.description}"
        // Ignore the next event if light was manually turned off.
		state.ignoreNext = true;
        return;
	}
    if (evt.value == "active") {
		log.info "Motion active: ${evt.description}"
        maybeDebounce();
        return;
	}
    if (evt.value == "open") {
		log.info "Door open: ${evt.description}"
        maybeDebounce();
        return;
	}
}

def maybeDebounce() {
	log.info "Debounce. Turning on lights. Scheduling timer."
    state.ignoreNext = false;
    switches.on();
	runIn(minutes * 60, timerHandler)
}

def timerHandler() {
	if (state.ignoreNext) {
    	log.info "Ignoring debounce"
    	state.ignoreNext = false;
        return;
    }
	log.info "Timer fired"
    if (motion.currentValue("motion").any { log.debug it; it == "action" }) {
    	log.info "Motion still active"
    	maybeDebounce();
        return
    }
    if (contact.currentValue("contact").any { log.debug it; it == "open" }) {
    	log.info "Door still open"
    	maybeDebounce();
        return
    }
    log.info "No debounce condition met. Turning off lights"
	switches.off();
}