MSA-1357: Nest Temp Info

Rolling down hotfix to master

devicetypes/smartthings-users/nest.src/nest.groovy

@@ -0,0 +1,600 @@
+/**
+ *  Nest Direct
+ *
+ *  Author: dianoga7@3dgo.net
+ *  Code: https://github.com/smartthings-users/device-type.nest
+ *
+ * INSTALLATION
+ * =========================================
+ * 1) Create a new device type (https://graph.api.smartthings.com/ide/devices)
+ *     Name: Nest
+ *     Author: dianoga7@3dgo.net
+ *     Capabilities:
+ *         Polling
+ *         Relative Humidity Measurement
+ *         Thermostat
+ *         Temperature Measurement
+ *         Presence Sensor
+ *         Sensor
+ *     Custom Attributes:
+ *         temperatureUnit
+ *     Custom Commands:
+ *         away
+ *         present
+ *         setPresence
+ *         heatingSetpointUp
+ *         heatingSetpointDown
+ *         coolingSetpointUp
+ *         coolingSetpointDown
+ *         setFahrenheit
+ *         setCelsius
+ *
+ * 2) If you want to switch from slider controls to buttons, comment out the slider details line and uncomment the button details line.
+ *
+ * 3) Create a new device (https://graph.api.smartthings.com/device/list)
+ *     Name: Your Choice
+ *     Device Network Id: Your Choice
+ *     Type: Nest (should be the last option)
+ *     Location: Choose the correct location
+ *     Hub/Group: Leave blank
+ *
+ * 4) Update device preferences
+ *     Click on the new device to see the details.
+ *     Click the edit button next to Preferences
+ *     Fill in your information.
+ *     To find your serial number, login to http://home.nest.com. Click on the thermostat
+ *     you want to control. Under settings, go to Technical Info. Your serial number is
+ *     the second item.
+ *
+ * 5) That's it, you're done.
+ *
+ * Copyright (C) 2013 Brian Steere <dianoga7@3dgo.net>
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this
+ * software and associated documentation files (the "Software"), to deal in the Software
+ * without restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to the following
+ * conditions: The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+preferences {
+	input("username", "text", title: "Username", description: "Your Nest username (usually an email address)")
+	input("password", "password", title: "Password", description: "Your Nest password")
+	input("serial", "text", title: "Serial #", description: "The serial number of your thermostat")
+}
+
+// for the UI
+metadata {
+	definition (name: "Nest", namespace: "smartthings-users", author: "dianoga7@3dgo.net") {
+		capability "Polling"
+		capability "Relative Humidity Measurement"
+		capability "Thermostat"
+		capability "Temperature Measurement"
+		capability "Presence Sensor"
+		capability "Sensor"
+
+		command "away"
+		command "present"
+		command "setPresence"
+		command "heatingSetpointUp"
+		command "heatingSetpointDown"
+		command "coolingSetpointUp"
+		command "coolingSetpointDown"
+		command "setFahrenheit"
+		command "setCelsius"
+
+		attribute "temperatureUnit", "string"
+	}
+
+	simulator {
+		// TODO: define status and reply messages here
+	}
+
+	tiles {
+		valueTile("temperature", "device.temperature", canChangeIcon: true, canChangeBackground:true) {
+			state("temperature", label: '${currentValue}°', backgroundColors: [
+				// Celsius Color Range
+				[value: 0, color: "#153591"],
+				[value: 7, color: "#1e9cbb"],
+				[value: 15, color: "#90d2a7"],
+				[value: 23, color: "#44b621"],
+				[value: 29, color: "#f1d801"],
+				[value: 33, color: "#d04e00"],
+				[value: 36, color: "#bc2323"],
+				// Fahrenheit Color Range
+				[value: 40, color: "#153591"],
+				[value: 44, color: "#1e9cbb"],
+				[value: 59, color: "#90d2a7"],
+				[value: 74, color: "#44b621"],
+				[value: 84, color: "#f1d801"],
+				[value: 92, color: "#d04e00"],
+				[value: 96, color: "#bc2323"]
+			]
+			)
+		}
+
+		standardTile("thermostatMode", "device.thermostatMode", inactiveLabel: true, decoration: "flat") {
+			state("auto", action:"thermostat.off", icon: "st.thermostat.auto")
+			state("off", action:"thermostat.cool", icon: "st.thermostat.heating-cooling-off")
+			state("cool", action:"thermostat.heat", icon: "st.thermostat.cool")
+			state("heat", action:"thermostat.auto", icon: "st.thermostat.heat")
+		}
+
+		standardTile("thermostatFanMode", "device.thermostatFanMode", inactiveLabel: true, decoration: "flat") {
+			state "auto", action:"thermostat.fanOn", icon: "st.thermostat.fan-auto"
+			state "on", action:"thermostat.fanCirculate", icon: "st.thermostat.fan-on"
+			state "circulate", action:"thermostat.fanAuto", icon: "st.thermostat.fan-circulate"
+		}
+
+		valueTile("heatingSetpoint", "device.heatingSetpoint") {
+			state "default", label:'${currentValue}°', unit:"Heat", backgroundColor:"#bc2323"
+		}
+
+		valueTile("coolingSetpoint", "device.coolingSetpoint") {
+			state "default", label:'${currentValue}°', unit:"Cool", backgroundColor:"#1e9cbb"
+		}
+
+		standardTile("thermostatOperatingState", "device.thermostatOperatingState", inactiveLabel: false, decoration: "flat") {
+			state "idle", action:"polling.poll", label:'${name}', icon: "st.sonos.pause-icon"
+			state "cooling", action:"polling.poll", label:'  ', icon: "st.thermostat.cooling", backgroundColor:"#1e9cbb"
+			state "heating", action:"polling.poll", label:'  ', icon: "st.thermostat.heating", backgroundColor:"#bc2323"
+			state "fan only", action:"polling.poll", label:'${name}', icon: "st.Appliances.appliances11"
+		}
+
+		valueTile("humidity", "device.humidity", inactiveLabel: false) {
+			state "default", label:'${currentValue}%', unit:"Humidity"
+		}
+
+		standardTile("presence", "device.presence", inactiveLabel: false, decoration: "flat") {
+			state "present", label:'${name}', action:"away", icon: "st.Home.home2"
+			state "not present", label:'away', action:"present", icon: "st.Transportation.transportation5"
+		}
+
+		standardTile("refresh", "device.thermostatMode", inactiveLabel: false, decoration: "flat") {
+			state "default", action:"polling.poll", icon:"st.secondary.refresh"
+		}
+
+		standardTile("temperatureUnit", "device.temperatureUnit", canChangeIcon: false) {
+			state "fahrenheit",  label: "°F", icon: "st.alarm.temperature.normal", action:"setCelsius"
+			state "celsius", label: "°C", icon: "st.alarm.temperature.normal", action:"setFahrenheit"
+		}
+
+		controlTile("heatSliderControl", "device.heatingSetpoint", "slider", height: 1, width: 2, inactiveLabel: false) {
+			state "setHeatingSetpoint", label:'Set temperature to', action:"thermostat.setHeatingSetpoint"
+		}
+		controlTile("coolSliderControl", "device.coolingSetpoint", "slider", height: 1, width: 2, inactiveLabel: false) {
+			state "setCoolingSetpoint", label:'Set temperature to', action:"thermostat.setCoolingSetpoint"
+		}
+
+		standardTile("heatingSetpointUp", "device.heatingSetpoint", canChangeIcon: false, inactiveLabel: false, decoration: "flat") {
+			state "heatingSetpointUp", label:'  ', action:"heatingSetpointUp", icon:"st.thermostat.thermostat-up", backgroundColor:"#bc2323"
+		}
+
+		standardTile("heatingSetpointDown", "device.heatingSetpoint", canChangeIcon: false, inactiveLabel: false, decoration: "flat") {
+			state "heatingSetpointDown", label:'  ', action:"heatingSetpointDown", icon:"st.thermostat.thermostat-down", backgroundColor:"#bc2323"
+		}
+
+		standardTile("coolingSetpointUp", "device.coolingSetpoint", canChangeIcon: false, inactiveLabel: false, decoration: "flat") {
+			state "coolingSetpointUp", label:'  ', action:"coolingSetpointUp", icon:"st.thermostat.thermostat-up", backgroundColor:"#1e9cbb"
+		}
+
+		standardTile("coolingSetpointDown", "device.coolingSetpoint", canChangeIcon: false, inactiveLabel: false, decoration: "flat") {
+			state "coolingSetpointDown", label:'  ', action:"coolingSetpointDown", icon:"st.thermostat.thermostat-down", backgroundColor:"#1e9cbb"
+		}
+
+		main(["temperature", "thermostatOperatingState", "humidity"])
+
+		// ============================================================
+		// Slider or Buttons...
+		// To expose buttons, comment out the first detials line below and uncomment the second details line below.
+		// To expose sliders, uncomment the first details line below and comment out the second details line below.
+
+		details(["temperature", "thermostatOperatingState", "humidity", "thermostatMode", "thermostatFanMode", "presence", "heatingSetpoint", "heatSliderControl", "coolingSetpoint", "coolSliderControl", "temperatureUnit", "refresh"])
+		// details(["temperature", "thermostatOperatingState", "humidity", "thermostatMode", "thermostatFanMode", "presence", "heatingSetpointDown", "heatingSetpoint", "heatingSetpointUp", "coolingSetpointDown", "coolingSetpoint", "coolingSetpointUp", "temperatureUnit", "refresh"])
+
+		// ============================================================
+
+	}
+
+}
+
+// parse events into attributes
+def parse(String description) {
+
+}
+
+// handle commands
+def setHeatingSetpoint(temp) {
+	def latestThermostatMode = device.latestState('thermostatMode')
+	def temperatureUnit = device.latestValue('temperatureUnit')
+
+	switch (temperatureUnit) {
+		case "celsius":
+			if (temp) {
+				if (temp < 9) {
+					temp = 9
+				}
+				if (temp > 32) {
+					temp = 32
+				}
+				if (latestThermostatMode.stringValue == 'auto') {
+					api('temperature', ['target_change_pending': true, 'target_temperature_low': temp]) {
+						sendEvent(name: 'heatingSetpoint', value: heatingSetpoint, unit: temperatureUnit, state: "heat")
+					}
+				} else if (latestThermostatMode.stringValue == 'heat') {
+					api('temperature', ['target_change_pending': true, 'target_temperature': temp]) {
+							sendEvent(name: 'heatingSetpoint', value: heatingSetpoint, unit: temperatureUnit, state: "heat")
+					}
+				}
+			}
+			break;
+		default:
+			if (temp) {
+				if (temp < 51) {
+					temp = 51
+				}
+				if (temp > 89) {
+					temp = 89
+				}
+				if (latestThermostatMode.stringValue == 'auto') {
+					api('temperature', ['target_change_pending': true, 'target_temperature_low': fToC(temp)]) {
+						sendEvent(name: 'heatingSetpoint', value: heatingSetpoint, unit: temperatureUnit, state: "heat")
+					}
+				} else if (latestThermostatMode.stringValue == 'heat') {
+					api('temperature', ['target_change_pending': true, 'target_temperature': fToC(temp)]) {
+						sendEvent(name: 'heatingSetpoint', value: heatingSetpoint, unit: temperatureUnit, state: "heat")
+					}
+				}
+			}
+			break;
+	}
+	poll()
+}
+
+def coolingSetpointUp(){
+	int newSetpoint = device.currentValue("coolingSetpoint") + 1
+	log.debug "Setting cool set point up to: ${newSetpoint}"
+	setCoolingSetpoint(newSetpoint)
+}
+
+def coolingSetpointDown(){
+	int newSetpoint = device.currentValue("coolingSetpoint") - 1
+	log.debug "Setting cool set point down to: ${newSetpoint}"
+	setCoolingSetpoint(newSetpoint)
+}
+
+def setCoolingSetpoint(temp) {
+	def latestThermostatMode = device.latestState('thermostatMode')
+	def temperatureUnit = device.latestValue('temperatureUnit')
+
+	switch (temperatureUnit) {
+		case "celsius":
+			if (temp) {
+				if (temp < 9) {
+					temp = 9
+				}
+				if (temp > 32) {
+					temp = 32
+				}
+				if (latestThermostatMode.stringValue == 'auto') {
+					api('temperature', ['target_change_pending': true, 'target_temperature_high': temp]) {
+						sendEvent(name: 'coolingSetpoint', value: coolingSetpoint, unit: temperatureUnit, state: "cool")
+					}
+				} else if (latestThermostatMode.stringValue == 'cool') {
+					api('temperature', ['target_change_pending': true, 'target_temperature': temp]) {
+						sendEvent(name: 'coolingSetpoint', value: coolingSetpoint, unit: temperatureUnit, state: "cool")
+					}
+				}
+			}
+			break;
+		default:
+			if (temp) {
+				if (temp < 51) {
+					temp = 51
+				}
+				if (temp > 89) {
+					temp = 89
+				}
+				if (latestThermostatMode.stringValue == 'auto') {
+					api('temperature', ['target_change_pending': true, 'target_temperature_high': fToC(temp)]) {
+						sendEvent(name: 'coolingSetpoint', value: coolingSetpoint, unit: temperatureUnit, state: "cool")
+					}
+				} else if (latestThermostatMode.stringValue == 'cool') {
+					api('temperature', ['target_change_pending': true, 'target_temperature': fToC(temp)]) {
+						sendEvent(name: 'coolingSetpoint', value: coolingSetpoint, unit: temperatureUnit, state: "cool")
+					}
+				}
+			}
+			break;
+	}
+	poll()
+}
+
+def heatingSetpointUp(){
+	int newSetpoint = device.currentValue("heatingSetpoint") + 1
+	log.debug "Setting heat set point up to: ${newSetpoint}"
+	setHeatingSetpoint(newSetpoint)
+}
+
+def heatingSetpointDown(){
+	int newSetpoint = device.currentValue("heatingSetpoint") - 1
+	log.debug "Setting heat set point down to: ${newSetpoint}"
+	setHeatingSetpoint(newSetpoint)
+}
+
+def setFahrenheit() {
+	def temperatureUnit = "fahrenheit"
+	log.debug "Setting temperatureUnit to: ${temperatureUnit}"
+	sendEvent(name: "temperatureUnit",   value: temperatureUnit)
+	poll()
+}
+
+def setCelsius() {
+	def temperatureUnit = "celsius"
+	log.debug "Setting temperatureUnit to: ${temperatureUnit}"
+	sendEvent(name: "temperatureUnit",   value: temperatureUnit)
+	poll()
+}
+
+def off() {
+	setThermostatMode('off')
+}
+
+def heat() {
+	setThermostatMode('heat')
+}
+
+def emergencyHeat() {
+	setThermostatMode('heat')
+}
+
+def cool() {
+	setThermostatMode('cool')
+}
+
+def auto() {
+	setThermostatMode('range')
+}
+
+def setThermostatMode(mode) {
+	mode = mode == 'emergency heat'? 'heat' : mode
+
+	api('thermostat_mode', ['target_change_pending': true, 'target_temperature_type': mode]) {
+		mode = mode == 'range' ? 'auto' : mode
+		sendEvent(name: 'thermostatMode', value: mode)
+		poll()
+	}
+}
+
+def fanOn() {
+	setThermostatFanMode('on')
+}
+
+def fanAuto() {
+	setThermostatFanMode('auto')
+}
+
+def fanCirculate() {
+	setThermostatFanMode('circulate')
+}
+
+def setThermostatFanMode(mode) {
+	def modes = [
+		on: ['fan_mode': 'on'],
+		auto: ['fan_mode': 'auto'],
+		circulate: ['fan_mode': 'duty-cycle', 'fan_duty_cycle': 900]
+	]
+
+	api('fan_mode', modes.getAt(mode)) {
+		sendEvent(name: 'thermostatFanMode', value: mode)
+		poll()
+	}
+}
+
+def away() {
+	setPresence('away')
+	sendEvent(name: 'presence', value: 'not present')
+}
+
+def present() {
+	setPresence('present')
+	sendEvent(name: 'presence', value: 'present')
+}
+
+def setPresence(status) {
+	log.debug "Status: $status"
+	api('presence', ['away': status == 'away', 'away_timestamp': new Date().getTime(), 'away_setter': 0]) {
+		poll()
+	}
+}
+
+def poll() {
+	log.debug "Executing 'poll'"
+	api('status', []) {
+		data.device = it.data.device.getAt(settings.serial)
+		data.shared = it.data.shared.getAt(settings.serial)
+		data.structureId = it.data.link.getAt(settings.serial).structure.tokenize('.')[1]
+		data.structure = it.data.structure.getAt(data.structureId)
+
+		data.device.fan_mode = data.device.fan_mode == 'duty-cycle'? 'circulate' : data.device.fan_mode
+		data.structure.away = data.structure.away ? 'away' : 'present'
+
+		log.debug(data.shared)
+
+		def humidity = data.device.current_humidity
+		def temperatureType = data.shared.target_temperature_type
+		def fanMode = data.device.fan_mode
+		def heatingSetpoint = '--'
+		def coolingSetpoint = '--'
+
+		temperatureType = temperatureType == 'range' ? 'auto' : temperatureType
+
+		sendEvent(name: 'humidity', value: humidity)
+		sendEvent(name: 'thermostatFanMode', value: fanMode)
+		sendEvent(name: 'thermostatMode', value: temperatureType)
+
+		def temperatureUnit = device.latestValue('temperatureUnit')
+
+		switch (temperatureUnit) {
+			case "celsius":
+				def temperature = Math.round(data.shared.current_temperature)
+				def targetTemperature = Math.round(data.shared.target_temperature)
+
+				if (temperatureType == "cool") {
+					coolingSetpoint = targetTemperature
+				} else if (temperatureType == "heat") {
+					heatingSetpoint = targetTemperature
+				} else if (temperatureType == "auto") {
+					coolingSetpoint = Math.round(data.shared.target_temperature_high)
+					heatingSetpoint = Math.round(data.shared.target_temperature_low)
+				}
+
+				sendEvent(name: 'temperature', value: temperature, unit: temperatureUnit, state: temperatureType)
+				sendEvent(name: 'coolingSetpoint', value: coolingSetpoint, unit: temperatureUnit, state: "cool")
+				sendEvent(name: 'heatingSetpoint', value: heatingSetpoint, unit: temperatureUnit, state: "heat")
+				break;
+			default:
+				def temperature = Math.round(cToF(data.shared.current_temperature))
+				def targetTemperature = Math.round(cToF(data.shared.target_temperature))
+
+				if (temperatureType == "cool") {
+					coolingSetpoint = targetTemperature
+				} else if (temperatureType == "heat") {
+					heatingSetpoint = targetTemperature
+				} else if (temperatureType == "auto") {
+					coolingSetpoint = Math.round(cToF(data.shared.target_temperature_high))
+					heatingSetpoint = Math.round(cToF(data.shared.target_temperature_low))
+				}
+
+				sendEvent(name: 'temperature', value: temperature, unit: temperatureUnit, state: temperatureType)
+				sendEvent(name: 'coolingSetpoint', value: coolingSetpoint, unit: temperatureUnit, state: "cool")
+				sendEvent(name: 'heatingSetpoint', value: heatingSetpoint, unit: temperatureUnit, state: "heat")
+				break;
+			}
+
+		switch (device.latestValue('presence')) {
+			case "present":
+				if (data.structure.away == 'away') {
+					sendEvent(name: 'presence', value: 'not present')
+				}
+				break;
+			case "not present":
+				if (data.structure.away == 'present') {
+					sendEvent(name: 'presence', value: 'present')
+				}
+				break;
+		}
+
+		if (data.shared.hvac_ac_state) {
+			sendEvent(name: 'thermostatOperatingState', value: "cooling")
+		} else if (data.shared.hvac_heater_state) {
+			sendEvent(name: 'thermostatOperatingState', value: "heating")
+		} else if (data.shared.hvac_fan_state) {
+			sendEvent(name: 'thermostatOperatingState', value: "fan only")
+		} else {
+			sendEvent(name: 'thermostatOperatingState', value: "idle")
+		}
+	}
+}
+
+def api(method, args = [], success = {}) {
+	if(!isLoggedIn()) {
+		log.debug "Need to login"
+		login(method, args, success)
+		return
+	}
+
+	def methods = [
+		'status': [uri: "/v2/mobile/${data.auth.user}", type: 'get'],
+		'fan_mode': [uri: "/v2/put/device.${settings.serial}", type: 'post'],
+		'thermostat_mode': [uri: "/v2/put/shared.${settings.serial}", type: 'post'],
+		'temperature': [uri: "/v2/put/shared.${settings.serial}", type: 'post'],
+		'presence': [uri: "/v2/put/structure.${data.structureId}", type: 'post']
+	]
+
+	def request = methods.getAt(method)
+
+	log.debug "Logged in"
+	doRequest(request.uri, args, request.type, success)
+}
+
+// Need to be logged in before this is called. So don't call this. Call api.
+def doRequest(uri, args, type, success) {
+	log.debug "Calling $type : $uri : $args"
+
+	if(uri.charAt(0) == '/') {
+		uri = "${data.auth.urls.transport_url}${uri}"
+	}
+
+	def params = [
+		uri: uri,
+		headers: [
+			'X-nl-protocol-version': 1,
+			'X-nl-user-id': data.auth.userid,
+			'Authorization': "Basic ${data.auth.access_token}"
+		],
+		body: args
+	]
+
+	def postRequest = { response ->
+		if (response.getStatus() == 302) {
+			def locations = response.getHeaders("Location")
+			def location = locations[0].getValue()
+			log.debug "redirecting to ${location}"
+			doRequest(location, args, type, success)
+		} else {
+			success.call(response)
+		}
+	}
+
+	try {
+		if (type == 'post') {
+			httpPostJson(params, postRequest)
+		} else if (type == 'get') {
+			httpGet(params, postRequest)
+		}
+	} catch (Throwable e) {
+		login()
+	}
+}
+
+def login(method = null, args = [], success = {}) {
+	def params = [
+		uri: 'https://home.nest.com/user/login',
+		body: [username: settings.username, password: settings.password]
+	]
+
+	httpPost(params) {response ->
+		data.auth = response.data
+		data.auth.expires_in = Date.parse('EEE, dd-MMM-yyyy HH:mm:ss z', response.data.expires_in).getTime()
+		log.debug data.auth
+
+		api(method, args, success)
+	}
+}
+
+def isLoggedIn() {
+	if(!data.auth) {
+		log.debug "No data.auth"
+		return false
+	}
+
+	def now = new Date().getTime();
+	return data.auth.expires_in > now
+}
+
+def cToF(temp) {
+	return (temp * 1.8 + 32).toDouble()
+}
+
+def fToC(temp) {
+	return ((temp - 32) / 1.8).toDouble()
+}

smartapps/vlaminck/alfred-workflow.src/alfred-workflow.groovy

@@ -92,22 +92,87 @@ void updateLock() {
 
 private void updateAll(devices) {
 	def command = request.JSON?.command
-	if (command) {
-		devices."$command"()
+	def type = params.param1
+	if (!devices) {
+		httpError(404, "Devices not found")
+	}
+	
+	if (command){
+		devices.each { device ->
+			executeCommand(device, type, command)
+		}
 	}
 }
 
 private void update(devices) {
 	log.debug "update, request: ${request.JSON}, params: ${params}, devices: $devices.id"
 	def command = request.JSON?.command
-	if (command) {
-		def device = devices.find { it.id == params.id }
-		if (!device) {
-			httpError(404, "Device not found")
-		} else {
-			device."$command"()
-		}
+	def type = params.param1
+	def device = devices?.find { it.id == params.id }
+
+	if (!device) {
+		httpError(404, "Device not found")
 	}
+
+	if (command) {
+		executeCommand(device, type, command)
+	}
+}
+
+/**
+ * Validating the command passed by the user based on capability.
+ * @return boolean
+ */
+def validateCommand(device, deviceType, command) {
+	def capabilityCommands = getDeviceCapabilityCommands(device.capabilities)
+	def currentDeviceCapability = getCapabilityName(deviceType)
+	if (capabilityCommands[currentDeviceCapability]) {
+		return command in capabilityCommands[currentDeviceCapability] ? true : false
+	} else {
+		// Handling other device types here, which don't accept commands
+		httpError(400, "Bad request.")
+	}
+}
+
+/**
+ * Need to get the attribute name to do the lookup. Only
+ * doing it for the device types which accept commands
+ * @return attribute name of the device type
+ */
+def getCapabilityName(type) {
+    switch(type) {
+		case "switches":
+			return "Switch"
+		case "locks":
+			return "Lock"
+		default:
+			return type
+	}
+}
+
+/**
+ * Constructing the map over here of
+ * supported commands by device capability
+ * @return a map of device capability -> supported commands
+ */
+def getDeviceCapabilityCommands(deviceCapabilities) {
+	def map = [:]
+	deviceCapabilities.collect {
+		map[it.name] = it.commands.collect{ it.name.toString() }
+	}
+	return map
+}
+
+/**
+ * Validates and executes the command
+ * on the device or devices
+ */
+def executeCommand(device, type, command) {
+	if (validateCommand(device, type, command)) {
+		device."$command"()
+	} else {
+		httpError(403, "Access denied. This command is not supported by current capability.")
+	}	
 }
 
 private show(devices, name) {