check if light is on

gistfile1.txt

/**
 *  Check Lights at Night
 *
 *  Copyright 2015 james anderson
 *
 *  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: "Check Lights at Night",
    namespace: "jimmyjames",
    author: "james anderson",
    description: "Check if a light is on at a specified time, and send a notification if they are.",
    category: "",
    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")


preferences {
    section("Which Lights?") {
        input "theLight", "capability.switch"
    }
    section("At what time?") {
    	input "theTime", "time"
    }
    section( "Notifications" ) {
        input "sendPushMessage", "bool", title: "Push notification", 
              required: false, defaultValue: "true"
        input "phone", "phone", title: "Send a Text Message?", 
               required: false
    }
}

def installed() {
	log.debug "Installed with settings: ${settings}"
	initialize()
}

def updated() {
	log.debug "Updated with settings: ${settings}"
	unsubscribe()
	initialize()
}

def initialize() {
	// call checkLights method at time specified in setup
	schedule(theTime, checkLights) 
}

def checkLights() {
    log.debug "checking switches at: ${new Date()}"
	
    // switches have a "switch" attribute. To get the current value
    // use <device>.current<capitalized attribute>
    if (theLight.currentSwitch == "on") {
        def message = "Your ${theLight.displayName} is on!"
        
        // send a push notification in the SmartThings app if configured
        if (sendPushMessage) {
            sendPush(message)
        }
        // send a text message to the number specified, if configured
        if (phone) {
            sendSms(phone, message)
        }
    } else {
    	log.debug "${theLight.displayName} is off!"
    }
}