Added Basic Bluetooth App, which scans names of surrounding BLE devices

RippleChat/BluetoothViewModel.swift

@@ -0,0 +1,35 @@
+//
+//  BluetoothViewModel.swift
+//  RippleChat
+//
+//  Created by Severin Memmishofer on 09.07.23.
+//
+
+import SwiftUI
+import CoreBluetooth
+
+class BluetoothViewModel: NSObject, ObservableObject {
+    private var centralManager: CBCentralManager?
+    private var peripherals: [CBPeripheral] = []
+    @Published var peripheralNames: [String] = []
+    
+    override init() {
+        super.init()
+        self.centralManager = CBCentralManager(delegate: self, queue: .main)
+    }
+}
+
+extension BluetoothViewModel: CBCentralManagerDelegate {
+    func centralManagerDidUpdateState(_ central: CBCentralManager) {
+        if central.state == .poweredOn {
+            self.centralManager?.scanForPeripherals(withServices: nil)
+        }
+    }
+    
+    func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) {
+        if !peripherals.contains(peripheral) {
+            self.peripherals.append(peripheral)
+            self.peripheralNames.append(peripheral.name ?? "unnamed device")
+        }
+    }
+}

RippleChat/ContentView.swift

@@ -6,8 +6,11 @@
 //
 
 import SwiftUI
+import CoreBluetooth
 
 struct ContentView: View {
+    @ObservedObject private var bluetoothViewModel = BluetoothViewModel()
+    
     var body: some View {
         VStack {
             Image(systemName: "globe")
@@ -16,6 +19,12 @@ struct ContentView: View {
             Text("Hello, world!")
         }
         .padding()
+        NavigationView {
+            List(bluetoothViewModel.peripheralNames, id: \.self) { peripheral in
+                Text(peripheral)
+            }
+            .navigationTitle("Peripherals")
+        }
     }
 }