BluetoothManager2.swift

extension BluetoothManager: CentralManagerDelegate {
    func centralManagerDidUpdateState(_ central: CentralManager) {
        // Make sure the central manager is powered on.
        guard central.state == .poweredOn else { return }
        // We only scan for the listed UUIDs.
        central.scanForPeripherals(withServices: uuids, options: nil)
    }
    
    func centralManager(_ central: CentralManager,
                        didDiscover peripheral: Peripheral,
                        advertisementData: [String : Any],
                        rssi RSSI: NSNumber) {
        // Only connect to peripherals with names and manufacturer data.
        guard let name = peripheral.name ?? advertisementData[CBAdvertisementDataLocalNameKey] as? String,
              let data = advertisementData[CBAdvertisementDataManufacturerDataKey] as? Data,
              name != "FORBIDDEN-NAME",
              !data.isEmpty else { return }
        
        central.connect(peripheral, options: nil)
    }
    
    // MARK: - CBCentralManagerDelegate intermediate functions.

    func centralManagerDidUpdateState(_ central: CBCentralManager) {
        centralManagerDidUpdateState(central as CentralManager)
    }
    
    func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) {
        centralManager(central as CentralManager,
                       didDiscover: peripheral as Peripheral,
                       advertisementData: advertisementData,
                       rssi: RSSI)
    }
}