MSA-2232: This SmartThings SmartApp enables you to set up your doors to automatically lock

after a period of being unlocked. It has an optional setting to disable locking
in a specific mode.

For example, create a "Party" mode for your "Home" Location, and select this mode
in the app. Now, when your "Home" Location is in "Party" mode, doors will not
automatically lock.

smartapps/xdumaine/autolock-doors.src/autolock-doors.groovy

@@ -0,0 +1,76 @@
+definition(
+    name: "Autolock Doors",
+    namespace: "xdumaine",
+    author: "Xander Dumaine",
+    description: "Automatically locks doors a specific door after X minutes when unlocked). Optionally disable auto locking when in a specific mode.",
+    category: "My Apps",
+    iconUrl: "https://s3.amazonaws.com/xdumaine-random-junk/padlock.png",
+    iconX2Url: "https://s3.amazonaws.com/xdumaine-random-junk/padlock.png"
+)
+
+preferences{
+    section("Select the door locks:") {
+        input "locks", "capability.lock", required: true, multiple: true
+    }
+    section("Automatically lock the door when unlocked...") {
+        input "minutesLater", "number", title: "Delay (in minutes):", required: true
+    }
+    section("Disable auto lock when...") {
+    	input "modes", "mode", title: "Select mode(s) (optional)", multiple: true
+    }
+    section( "Notifications" ) {
+        input("recipients", "contact", title: "Send notifications to", required: false) {
+            input "phoneNumber", "phone", title: "Warn with text message (optional)", description: "Phone Number", required: false
+        }
+    }
+}
+
+def installed(){
+    initialize()
+}
+
+def updated(){
+    unsubscribe()
+    unschedule()
+    initialize()
+}
+
+def initialize(){
+    log.debug "Settings: ${settings}"
+    locks.each {
+    	subscribe(it, "lock", doorHandler, [filterEvents: false])
+        it.lock()
+    }
+}
+
+def lockDoor(){
+    log.debug "Locking the doors."
+    locks.each { it.lock() }
+    if (location.contactBookEnabled) {
+        if (recipients) {
+            log.debug ("Sending Push Notification...")
+            sendNotificationToContacts( "Selected doors were locked after one was unlocked for ${minutesLater} minutes!", recipients)
+        }
+    }
+    if (phoneNumber) {
+        log.debug("Sending text message...")
+        sendSms( phoneNumber, "Selected doors were locked after one was unlocked for ${minutesLater} minutes!")
+    }
+}
+
+def doorHandler(evt){
+    log.debug("Handling event: " + evt.value)
+    if (modes.contains(location.mode)) {
+    	log.debug("Not running because location is in disabled mode: " + location.currentMode)
+    } else {
+    	log.debug("Current mode: " + location.currentMode + " Disabled mode: " + modes)
+        def unlocked = locks.find {it.latestValue("lock") == "unlocked" }
+        if (unlocked && evt.value == "unlocked") {
+            log.debug("Scheduling lock because ${unlocked} was unlocked")
+            runIn( (minutesLater * 60), lockDoor ) // ...schedule (in minutes) to lock.
+        }
+        else if (!unlocked && evt.value == "locked") { // If a person manually locks it then...
+            unschedule( lockDoor ) // ...we don't need to lock it later.
+        }
+    }
+}