smartapp.js

const { SmartApp } = require('@smartthings/smartapp')

/* Define the SmartApp */
module.exports = new SmartApp()
	.enableEventLogging(2) // logs all lifecycle event requests/responses as pretty-printed JSON. Omit in production
	.configureI18n() // auto-create i18n files for localizing config pages

	// Configuration page definition
	.page('mainPage', (context, page, configData) => {

		// prompts user to select a contact sensor
		page.section('sensors', section => {
			section
				.deviceSetting('contactSensor')
				.capabilities(['contactSensor'])
				.required(true)
		})

		// prompts users to select one or more switch devices
		page.section('lights', section => {
			section
				.deviceSetting('lights')
				.capabilities(['switch'])
				.required(true)
				.multiple(true)
				.permissions('rx')
		})
	})

	// Handler called whenever app is installed or updated
	// Called for both INSTALLED and UPDATED lifecycle events if there is
	// no separate installed() handler
	.updated(async (context, updateData) => {
		await context.api.subscriptions.delete()
		await context.api.subscriptions.subscribeToDevices(context.config.contactSensor,
			'contactSensor', 'contact', 'openCloseHandler')
	})

	// Handler called when the configured open/close sensor opens or closes
	.subscribedEventHandler('openCloseHandler', (context, event) => {
		const value = event.value === 'open' ? 'on' : 'off'
		context.api.devices.sendCommands(context.config.lights, 'switch', value)
	})