<dependency>
    <groupId>com.smartthings.sdk</groupId>
    <artifactId>smartthings-client</artifactId>
    <version>0.0.4-PREVIEW</version>
</dependency>

dependencies {
    compile 'com.smartthings.sdk:smartthings-client:0.0.4-PREVIEW'
}

// Build API client
val api = ApiClient()

// Build a client for Devices
val devicesApi = api.buildClient(DevicesApi::class.java)

// Get and list all devices with the capability of Switch
val data = it.installData
val devices = devicesApi.getDevices(data.authToken, mapOf("capabilities" to listOf("switch")))
println(devices)

// In the context of a SmartApp LIFECYCLE event (INSTALL or UPDATE)

// Build API client
val api = ApiClient()
// Build a client for Subscriptions
val subscriptionsApi = api.buildClient(SubscriptionsApi::class.java)
val auth = "Bearer ${this.authToken}"

// Clear subscriptions to re-add them
subscriptionsApi.deleteAllSubscriptions(this.installedApp.installedAppId, auth, emptyMap())

// Iterate all devices returned in the InstalledApp's config for key "selectedSwitches"
// That key is defined in Configuration.kt
val devices = this.installedApp.config["selectedSwitches"]
devices?.forEach { switchesConfig ->
    if (switchesConfig.valueType == ConfigEntry.ValueTypeEnum.DEVICE) {
        val subscriptionRequest = SubscriptionRequest().apply {
            sourceType = SubscriptionSource.DEVICE
            device = DeviceSubscriptionDetail().apply {
                deviceId = switchesConfig.deviceConfig.deviceId
                componentId = switchesConfig.deviceConfig.componentId
                capability = "switch"
                attribute = "switch"
                stateChangeOnly = true
                value = "*"
            }
        }

        // Create subscription for the device
        val subscription = subscriptionsApi.saveSubscription(this.installedApp.installedAppId, null, subscriptionRequest)
        println("Creating subscription for ${subscription.id}")
    }
}