From 2f8aac9b4c183c1aec35aa557cf35a461bfb89ab Mon Sep 17 00:00:00 2001
From: Andrew Crow <acrow311@gmail.com>
Date: Tue, 1 Mar 2016 15:46:11 -0600
Subject: [PATCH] MSA-913: App to turn off switches that can monitor power
 usage when the device that is plugged in is not in use.

---
 .../controlled-power-off.groovy               | 65 +++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 smartapps/acrow311/controlled-power-off.src/controlled-power-off.groovy

diff --git a/smartapps/acrow311/controlled-power-off.src/controlled-power-off.groovy b/smartapps/acrow311/controlled-power-off.src/controlled-power-off.groovy
new file mode 100644
index 0000000..3a9c8a0
--- /dev/null
+++ b/smartapps/acrow311/controlled-power-off.src/controlled-power-off.groovy
@@ -0,0 +1,65 @@
+/**
+ *  Controlled Power Off
+ *
+ *  Copyright 2016 Andrew Crow
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ *  in compliance with the License. You may obtain a copy of the License at:
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed
+ *  on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License
+ *  for the specific language governing permissions and limitations under the License.
+ *
+ */
+definition(
+    name: "Controlled Power Off",
+    namespace: "acrow311",
+    author: "Andrew Crow",
+    description: "Application used to power off devices that should be allowed to finish their cycle before being shut down such as air conditions and tankless water heaters.  Application will monitor electric usage and delay shutdown until usage has returned to inactive state.",
+    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",
+    iconX3Url: "https://s3.amazonaws.com/smartapp-icons/Convenience/Cat-Convenience@2x.png",
+    oauth: true)
+
+
+preferences {
+	section("Shutdown when device not active") {
+		input(name: "meter", type: "capability.powerMeter", title: "When This Power Meter...", required: true, multiple: false, description: null)
+        input(name: "threshold", type: "number", title: "Reports Below...", required: true, description: "In watts, enter integer value")
+	}
+}
+
+def installed() {
+	log.debug "Installed with settings: ${settings}"
+	initialize()
+}
+
+def updated() {
+	log.debug "Updated with settings: ${settings}"
+	initialize()
+}
+
+def initialize() {
+	unsubscribe()
+	subscribe(meter, "power", meterHandler)
+}
+
+def meterHandler(evt) {
+    def meterValue = evt.value as double
+    def thresholdValue = threshold as int
+	def switchState = meter.currentValue("switch") == "on"  // Get current switch status (on = true)
+	
+    if (switchState) {  // If the switch is already off, do nothing
+        if (meterValue < thresholdValue) { // If the power consumption is low enough, turn off switch
+            log.info "${meter} reported energy ${meterValue} below ${threshold}. Turning off switch."
+            sendNotificationEvent("${meter} not running, shutting down.")
+            meter.off()
+        } else { // Power consumption too high - device connected to switch in use - do not shutdown.
+            sendNotificationEvent("Power consumption too high to shut off ${meter}.  Attempting again in a moment.")
+            log.info "${meter} reported energy ${meterValue} above ${threshold}. Leaving switch on."
+        }
+    }
+}
\ No newline at end of file