CA-2351: Add Background BLE support for iOS (Part 2) (#552)

Author: Phoenix7351

core/src/appleMain/kotlin/CentralManager.kt

@@ -40,8 +40,11 @@ public class CentralManager internal constructor() {
 
     private val dispatcher = QueueDispatcher(DISPATCH_QUEUE_LABEL)
     internal val delegate = CentralManagerDelegate()
-    private val cbOptions = mutableMapOf<Any?, Any>(CBCentralManagerOptionRestoreIdentifierKey to CBCENTRALMANAGER_RESTORATION_ID + consumerId).toMap()
-    private val cbCentralManager = CBCentralManager(delegate, dispatcher.dispatchQueue, cbOptions)
+    private val cbCentralManager = CBCentralManager(
+        delegate,
+        dispatcher.dispatchQueue,
+        options = mapOf(CBCentralManagerOptionRestoreIdentifierKey to "$CBCENTRALMANAGER_RESTORATION_ID-$consumerId"),
+    )
 
     internal suspend fun scanForPeripheralsWithServices(
         services: List<Uuid>?,

core/src/appleMain/kotlin/CentralManagerDelegate.kt

@@ -121,7 +121,9 @@ internal class CentralManagerDelegate : NSObject(), CBCentralManagerDelegateProt
     }
 
     override fun centralManager(central: CBCentralManager, willRestoreState: Map<Any?, *>) {
-        // NO OP
+        // No-op: From the documentation: Tells the delegate the system is about to restore the central manager, as part of relaunching the app into the background.
+        // Use this method to synchronize the state of your app with the state of the Bluetooth system.
+        // Since the rest of Kable is handling the "synchronize," there's nothing to do here.
     }
 
     /* Monitoring the Central Manager’s Authorization */

core/src/appleMain/kotlin/ScannerBuilder.kt

@@ -5,7 +5,6 @@ import com.juul.kable.logs.Logging
 import com.juul.kable.logs.LoggingBuilder
 import platform.CoreBluetooth.CBCentralManagerScanOptionAllowDuplicatesKey
 import platform.CoreBluetooth.CBCentralManagerScanOptionSolicitedServiceUUIDsKey
-import platform.Foundation.NSArray
 
 public actual class ScannerBuilder {
 
@@ -36,7 +35,7 @@ public actual class ScannerBuilder {
             options[CBCentralManagerScanOptionAllowDuplicatesKey] = it
         }
         solicitedServiceUuids?.also { uuids ->
-            options[CBCentralManagerScanOptionSolicitedServiceUUIDsKey] = uuids.map { it.toCBUUID() } as NSArray
+            options[CBCentralManagerScanOptionSolicitedServiceUUIDsKey] = uuids.map(Uuid::toCBUUID)
         }
 
         return CentralManagerCoreBluetoothScanner(