feat: Simple bluetooth status indication

.gitignore

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+.DS_Store
+/.build
+/Packages
+xcuserdata/
+DerivedData/
+.swiftpm/configuration/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc
+
+/xtool
+
+*.log

.sourcekit-lsp/config.json

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+{
+    "swiftPM": {
+        "swiftSDK": "arm64-apple-ios"
+    }
+}

Info_extra_tags.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSBluetoothAlwaysUsageDescription</key>
+	<string>This app uses Bluetooth to connect to devices.</string>
+  	<key>NSBluetoothPeripheralUsageDescription</key>
+	<string>This app uses Bluetooth.</string>
+</dict>
+</plist>

Package.swift

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+// swift-tools-version: 6.0
+
+import PackageDescription
+
+let package = Package(
+    name: "ScoobyTag",
+    platforms: [
+        .iOS(.v15),
+        .macOS(.v14),
+    ],
+    products: [
+        // An xtool project should contain exactly one library product,
+        // representing the main app.
+        .library(
+            name: "ScoobyTag",
+            targets: ["ScoobyTag"]
+        ),
+    ],
+    targets: [
+        .target(
+            name: "ScoobyTag"
+        ),
+    ]
+)

Sources/scoobytag/BluetoothManager.swift

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+import SwiftUI
+import CoreBluetooth
+
+final class BluetoothManager: NSObject, ObservableObject {
+    private var centralManager: CBCentralManager!
+	@Published var status = "Starting..."
+
+    override init() {
+        super.init()
+        centralManager = CBCentralManager(delegate: self, queue: nil)
+    }
+}
+
+extension BluetoothManager: CBCentralManagerDelegate {
+    func centralManagerDidUpdateState(_ central: CBCentralManager) {
+    switch central.state {
+    case .poweredOn:
+        status = "Bluetooth is on"
+    default:
+        status = "Bluetooth unavailable"
+    }
+}
+}

Sources/scoobytag/ContentView.swift

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+import SwiftUI
+
+struct ContentView: View {
+    @EnvironmentObject var bluetoothManager: BluetoothManager
+
+    var body: some View {
+        VStack {
+            Image(systemName: "globe")
+                .imageScale(.large)
+                .foregroundStyle(.tint)
+            Text("Hello, world!")
+            Text(bluetoothManager.status)
+        }
+        .padding()
+    }
+}

Sources/scoobytag/ScoobyTagApp.swift

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+import SwiftUI
+import CoreBluetooth
+
+@main
+struct ScoobyTagApp: App {
+    @StateObject private var bluetoothManager = BluetoothManager()
+    var body: some Scene {
+        WindowGroup {
+            ContentView()
+                .environmentObject(bluetoothManager)
+        }
+    }
+}

makefile

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+.PHONY: all deploy log log_err clean
+
+all: build
+
+build:
+	xtool dev build
+
+deploy:
+	xtool dev
+
+log:
+	idevicesyslog | grep cooby > out.log
+
+log_err:
+	cat out.log | grep rror
+
+clean:
+	-rm -rf .build
+	-rm -rf xtool

xtool.yml

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+version: 1
+bundleID: com.example.scoobytag
+infoPath: ./Info_extra_tags.plist