feat: initialized Bluetooth module (#277)

2026-04-15 00:34:08 +09:00 · 2021-07-08 23:03:02 +02:00
parent 178b713353
commit 22386a4ae1
10 changed files with 848 additions and 46 deletions
--- a/Kit/Widgets/Battery.swift
+++ b/Kit/Widgets/Battery.swift
@@ -18,7 +18,7 @@ public class BatterykWidget: WidgetWrapper {
    private var colorState: Bool = false
    private var hideAdditionalWhenFull: Bool = true
    
-    private var percentage: Double = 1
+    private var percentage: Double? = nil
    private var time: Int = 0
    private var charging: Bool = false
    private var ACStatus: Bool = false
@@ -68,10 +68,11 @@ public class BatterykWidget: WidgetWrapper {
        if !self.hideAdditionalWhenFull || (self.hideAdditionalWhenFull && self.percentage != 1) {
            switch self.additional {
            case "percentage":
-                let rowWidth = self.drawOneRow(
-                    value: "\(Int((self.percentage.rounded(toPlaces: 2)) * 100))%",
-                    x: x
-                ).rounded(.up)
+                var value = "n/a"
+                if let percentage = self.percentage {
+                    value = "\(Int((percentage.rounded(toPlaces: 2)) * 100))%"
+                }
+                let rowWidth = self.drawOneRow(value: value, x: x).rounded(.up)
                width += rowWidth + Constants.Widget.spacing
                x += rowWidth + Constants.Widget.spacing
            case "time":
@@ -82,17 +83,25 @@ public class BatterykWidget: WidgetWrapper {
                width += rowWidth + Constants.Widget.spacing
                x += rowWidth + Constants.Widget.spacing
            case "percentageAndTime":
+                var value = "n/a"
+                if let percentage = self.percentage {
+                    value = "\(Int((percentage.rounded(toPlaces: 2)) * 100))%"
+                }
                let rowWidth = self.drawTwoRows(
-                    first: "\(Int((self.percentage.rounded(toPlaces: 2)) * 100))%",
+                    first: value,
                    second: Double(self.time*60).printSecondsToHoursMinutesSeconds(short: isShortTimeFormat),
                    x: x
                ).rounded(.up)
                width += rowWidth + Constants.Widget.spacing
                x += rowWidth + Constants.Widget.spacing
            case "timeAndPercentage":
+                var value = "n/a"
+                if let percentage = self.percentage {
+                    value = "\(Int((percentage.rounded(toPlaces: 2)) * 100))%"
+                }
                let rowWidth = self.drawTwoRows(
                    first: Double(self.time*60).printSecondsToHoursMinutesSeconds(short: isShortTimeFormat),
-                    second: "\(Int((self.percentage.rounded(toPlaces: 2)) * 100))%",
+                    second: value,
                    x: x
                ).rounded(.up)
                width += rowWidth + Constants.Widget.spacing
@@ -133,17 +142,33 @@ public class BatterykWidget: WidgetWrapper {
        ctx.restoreGState()
        width += 2 // add battery point width
        
-        let maxWidth = batterySize.width - offset*2 - borderWidth*2 - 1
-        let innerWidth: CGFloat = max(1, maxWidth * CGFloat(self.percentage))
-        let innerOffset: CGFloat = -offset + borderWidth + 1
-        let inner = NSBezierPath(roundedRect: NSRect(
-            x: batteryFrame.bounds.origin.x + innerOffset,
-            y: batteryFrame.bounds.origin.y + innerOffset,
-            width: innerWidth,
-            height: batterySize.height - offset*2 - borderWidth*2 - 1
-        ), xRadius: 1, yRadius: 1)
-        self.percentage.batteryColor(color: self.colorState).set()
-        inner.fill()
+        if let percentage = self.percentage {
+            let maxWidth = batterySize.width - offset*2 - borderWidth*2 - 1
+            let innerWidth: CGFloat = max(1, maxWidth * CGFloat(percentage))
+            let innerOffset: CGFloat = -offset + borderWidth + 1
+            let inner = NSBezierPath(roundedRect: NSRect(
+                x: batteryFrame.bounds.origin.x + innerOffset,
+                y: batteryFrame.bounds.origin.y + innerOffset,
+                width: innerWidth,
+                height: batterySize.height - offset*2 - borderWidth*2 - 1
+            ), xRadius: 1, yRadius: 1)
+            percentage.batteryColor(color: self.colorState).set()
+            inner.fill()
+        } else {
+            let attributes = [
+                NSAttributedString.Key.font: NSFont.systemFont(ofSize: 11, weight: .regular),
+                NSAttributedString.Key.foregroundColor: isDarkMode ? NSColor.white : NSColor.textColor,
+                NSAttributedString.Key.paragraphStyle: NSMutableParagraphStyle()
+            ]
+            
+            let batteryCenter: CGPoint = CGPoint(
+                x: batteryFrame.bounds.origin.x + (batteryFrame.bounds.width/2),
+                y: batteryFrame.bounds.origin.y + (batteryFrame.bounds.height/2)
+            )
+            
+            let rect = CGRect(x: batteryCenter.x-2, y: batteryCenter.y-4, width: 8, height: 12)
+            NSAttributedString.init(string: "?", attributes: attributes).draw(with: rect)
+        }
        
        if self.ACStatus {
            let batteryCenter: CGPoint = CGPoint(
@@ -267,7 +292,7 @@ public class BatterykWidget: WidgetWrapper {
        return rowWidth
    }
    
-    public func setValue(percentage: Double, ACStatus: Bool, isCharging: Bool, time: Int) {
+    public func setValue(percentage: Double? = nil, ACStatus: Bool? = nil, isCharging: Bool? = nil, time: Int? = nil) {
        var updated: Bool = false
        let timeFormat: String = Store.shared.string(key: "\(self.title)_timeFormat", defaultValue: self.timeFormat)
        
@@ -275,15 +300,15 @@ public class BatterykWidget: WidgetWrapper {
            self.percentage = percentage
            updated = true
        }
-        if self.ACStatus != ACStatus {
-            self.ACStatus = ACStatus
+        if let status = ACStatus, self.ACStatus != status {
+            self.ACStatus = status
            updated = true
        }
-        if self.charging != isCharging {
-            self.charging = isCharging
+        if let charging = isCharging, self.charging != charging {
+            self.charging = charging
            updated = true
        }
-        if self.time != time {
+        if let time = time, self.time != time {
            self.time = time
            updated = true
        }
@@ -302,33 +327,32 @@ public class BatterykWidget: WidgetWrapper {
    // MARK: - Settings
    
    public override func settings(width: CGFloat) -> NSView {
-        let rowHeight: CGFloat = 30
-        let height: CGFloat = ((rowHeight + Constants.Settings.margin) * 3) + Constants.Settings.margin
+        let view = SettingsContainerView(width: width)
        
-        let view: NSView = NSView(frame: NSRect(
-            x: Constants.Settings.margin,
-            y: Constants.Settings.margin,
-            width: width - (Constants.Settings.margin*2),
-            height: height
-        ))
+        var additionalOptions = BatteryAdditionals
+        if self.title == "Bluetooth" {
+            additionalOptions = additionalOptions.filter({ $0.key == "none" || $0.key == "percentage" })
+        }
        
-        view.addSubview(selectRow(
-            frame: NSRect(x: 0, y: (rowHeight + Constants.Settings.margin) * 2, width: view.frame.width, height: rowHeight),
+        view.addArrangedSubview(selectRow(
+            frame: NSRect(x: 0, y: 0, width: view.frame.width, height: Constants.Settings.row),
            title: localizedString("Additional information"),
            action: #selector(toggleAdditional),
-            items: BatteryAdditionals,
+            items: additionalOptions,
            selected: self.additional
        ))
        
-        view.addSubview(toggleTitleRow(
-            frame: NSRect(x: 0, y: (rowHeight + Constants.Settings.margin) * 1, width: view.frame.width, height: rowHeight),
-            title: localizedString("Hide additional information when full"),
-            action: #selector(toggleHideAdditionalWhenFull),
-            state: self.hideAdditionalWhenFull
-        ))
+        if self.title != "Bluetooth" {
+            view.addArrangedSubview(toggleTitleRow(
+                frame: NSRect(x: 0, y: 0, width: view.frame.width, height: Constants.Settings.row),
+                title: localizedString("Hide additional information when full"),
+                action: #selector(toggleHideAdditionalWhenFull),
+                state: self.hideAdditionalWhenFull
+            ))
+        }
        
-        view.addSubview(toggleTitleRow(
-            frame: NSRect(x: 0, y: (rowHeight + Constants.Settings.margin) * 0, width: view.frame.width, height: rowHeight),
+        view.addArrangedSubview(toggleTitleRow(
+            frame: NSRect(x: 0, y: 0, width: view.frame.width, height: Constants.Settings.row),
            title: localizedString("Colorize"),
            action: #selector(toggleColor),
            state: self.colorState
--- a/Kit/module/module.swift
+++ b/Kit/module/module.swift
@@ -80,7 +80,7 @@ open class Module: Module_p {
    private let log: NextLog
    private var readers: [Reader_p] = []
    
-    public init(popup: Popup_p?, settings: Settings_v?) {
+    public init(popup: Popup_p? = nil, settings: Settings_v? = nil) {
        self.config = module_c(in: Bundle(for: type(of: self)).path(forResource: "config", ofType: "plist")!)
        
        self.log = NextLog.shared.copy(category: self.config.name)
--- a/Modules/Bluetooth/Info.plist
+++ b/Modules/Bluetooth/Info.plist
@@ -0,0 +1,24 @@
+<?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>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2021 Serhiy Mytrovtsiy. All rights reserved.</string>
+</dict>
+</plist>
--- a/Modules/Bluetooth/config.plist
+++ b/Modules/Bluetooth/config.plist
@@ -0,0 +1,49 @@
+<?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>Name</key>
+	<string>Bluetooth</string>
+	<key>State</key>
+	<true/>
+	<key>Widgets</key>
+	<dict>
+		<key>label</key>
+		<dict>
+			<key>Default</key>
+			<false/>
+			<key>Title</key>
+			<string>BLE</string>
+			<key>Order</key>
+			<integer>0</integer>
+		</dict>
+		<key>mini</key>
+		<dict>
+			<key>Title</key>
+			<string>BLE</string>
+			<key>Default</key>
+			<false/>
+			<key>Preview</key>
+			<dict>
+				<key>Title</key>
+				<string>BLE</string>
+				<key>Value</key>
+				<string>0.98</string>
+			</dict>
+			<key>Unsupported colors</key>
+			<array>
+				<string>pressure</string>
+			</array>
+			<key>Order</key>
+			<integer>1</integer>
+		</dict>
+		<key>battery</key>
+		<dict>
+			<key>Default</key>
+			<true/>
+			<key>Order</key>
+			<integer>2</integer>
+		</dict>
+	</dict>
+</dict>
+</plist>
--- a/Modules/Bluetooth/main.swift
+++ b/Modules/Bluetooth/main.swift
@@ -0,0 +1,116 @@
+//
+//  main.swift
+//  Bluetooth
+//
+//  Created by Serhiy Mytrovtsiy on 08/06/2021.
+//  Using Swift 5.0.
+//  Running on macOS 10.15.
+//
+//  Copyright © 2021 Serhiy Mytrovtsiy. All rights reserved.
+//
+
+import Foundation
+import Kit
+import CoreBluetooth
+
+public enum BLEType: String {
+    case iPhone
+    case airPods
+    case unknown
+}
+
+public struct BLEDevice {
+    let uuid: UUID
+    let name: String
+    let type: BLEType
+    
+    var RSSI: Int?
+    var batteryLevel: [KeyValue_t]
+    
+    var isConnected: Bool
+    var isPaired: Bool
+    var isInitialized: Bool
+    
+    var peripheral: CBPeripheral?
+}
+
+public class Bluetooth: Module {
+    private var devicesReader: DevicesReader? = nil
+    private let popupView: Popup = Popup()
+    private let settingsView: Settings
+    
+    private var selectedBattery: String = ""
+    
+    public init() {
+        self.settingsView = Settings("Bluetooth")
+        
+        super.init(
+            popup: self.popupView,
+            settings: self.settingsView
+        )
+        guard self.available else { return }
+        
+        self.devicesReader = DevicesReader()
+        self.selectedBattery = Store.shared.string(key: "\(self.config.name)_battery", defaultValue: self.selectedBattery)
+        
+        self.settingsView.selectedBatteryHandler = { [unowned self] value in
+            self.selectedBattery = value
+        }
+        
+        self.devicesReader?.callbackHandler = { [unowned self] value in
+            self.batteryCallback(value)
+        }
+        self.devicesReader?.readyCallback = { [unowned self] in
+            self.readyHandler()
+        }
+        
+        if let reader = self.devicesReader {
+            self.addReader(reader)
+        }
+    }
+    
+    private func batteryCallback(_ raw: [BLEDevice]?) {
+        guard let value = raw else {
+            return
+        }
+        
+        let active = value.filter{ $0.isPaired && ($0.isConnected || !$0.batteryLevel.isEmpty) }
+        DispatchQueue.main.async(execute: {
+            self.popupView.batteryCallback(active)
+        })
+        self.settingsView.setList(active)
+        
+        var battery = active.first?.batteryLevel.first
+        if self.selectedBattery != "" {
+            let pair = self.selectedBattery.split(separator: "@")
+            
+            guard let device = value.first(where: { $0.name == pair.first! }) else {
+                error("cannot find selected battery: \(self.selectedBattery)")
+                return
+            }
+            
+            if pair.count == 1 {
+                battery = device.batteryLevel.first
+            } else if pair.count == 2 {
+                battery = device.batteryLevel.first{ $0.key == pair.last! }
+            }
+        }
+        
+        self.widgets.filter{ $0.isActive }.forEach { (w: Widget) in
+            switch w.item {
+            case let widget as Mini:
+                guard let percentage = Double(battery?.value ?? "0") else {
+                    return
+                }
+                widget.setValue(percentage/100)
+            case let widget as BatterykWidget:
+                var percentage: Double? = nil
+                if let value = battery?.value {
+                    percentage = (Double(value) ?? 0) / 100
+                }
+                widget.setValue(percentage: percentage)
+            default: break
+            }
+        }
+    }
+}
--- a/Modules/Bluetooth/popup.swift
+++ b/Modules/Bluetooth/popup.swift
@@ -0,0 +1,111 @@
+//
+//  popup.swift
+//  Bluetooth
+//
+//  Created by Serhiy Mytrovtsiy on 22/06/2021.
+//  Using Swift 5.0.
+//  Running on macOS 10.15.
+//
+//  Copyright © 2021 Serhiy Mytrovtsiy. All rights reserved.
+//
+
+import Cocoa
+import Kit
+
+internal class Popup: NSStackView, Popup_p {
+    public var sizeCallback: ((NSSize) -> Void)? = nil
+    
+    private var list: [UUID: BLEView] = [:]
+    
+    public init() {
+        super.init(frame: NSRect(x: 0, y: 0, width: Constants.Popup.width, height: 0))
+        
+        self.orientation = .vertical
+        self.spacing = Constants.Popup.margins
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    internal func batteryCallback(_ list: [BLEDevice]) {
+        let views = self.subviews.filter{ $0 is BLEView }.map{ $0 as! BLEView }
+        
+        list.reversed().forEach { (ble: BLEDevice) in
+            if let view = views.first(where: { $0.uuid == ble.uuid }) {
+                view.update(ble.batteryLevel)
+            } else {
+                self.addArrangedSubview(BLEView(
+                    width: self.frame.width,
+                    uuid: ble.uuid,
+                    name: ble.name,
+                    batteryLevel: ble.batteryLevel
+                ))
+            }
+        }
+        
+        let h = self.arrangedSubviews.map({ $0.bounds.height + self.spacing }).reduce(0, +) - self.spacing
+        if h > 0 && self.frame.size.height != h {
+            self.setFrameSize(NSSize(width: self.frame.width, height: h))
+            self.sizeCallback?(self.frame.size)
+        }
+    }
+}
+
+internal class BLEView: NSStackView {
+    public var uuid: UUID
+    
+    open override var intrinsicContentSize: CGSize {
+        return CGSize(width: self.bounds.width, height: self.bounds.height)
+    }
+    
+    public init(width: CGFloat, uuid: UUID, name: String, batteryLevel: [KeyValue_t]) {
+        self.uuid = uuid
+        
+        super.init(frame: NSRect(x: 0, y: 0, width: width, height: 30))
+        
+        self.orientation = .horizontal
+        self.alignment = .centerY
+        self.spacing = 0
+        self.wantsLayer = true
+        self.layer?.cornerRadius = 2
+        
+        let nameView: NSTextField = TextView(frame: NSRect(x: 0, y: 0, width: 0, height: 16))
+        nameView.font = NSFont.systemFont(ofSize: 13, weight: .light)
+        nameView.stringValue = name
+        
+        self.addArrangedSubview(nameView)
+        self.addArrangedSubview(NSView())
+        
+        batteryLevel.forEach { (pair: KeyValue_t) in
+            self.addLevel(pair)
+        }
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    override func updateLayer() {
+        self.layer?.backgroundColor = isDarkMode ? NSColor(hexString: "#111111", alpha: 0.25).cgColor : NSColor(hexString: "#f5f5f5", alpha: 1).cgColor
+    }
+    
+    public func update(_ batteryLevel: [KeyValue_t]) {
+        batteryLevel.forEach { (pair: KeyValue_t) in
+            if let view = self.subviews.first(where: { $0.identifier?.rawValue == pair.key }) as? NSTextField {
+                view.stringValue = "\(pair.value)%"
+            } else {
+                self.addLevel(pair)
+            }
+        }
+    }
+    
+    private func addLevel(_ pair: KeyValue_t) {
+        let valueView: NSTextField = TextView(frame: NSRect(x: 0, y: 0, width: 0, height: 13))
+        valueView.identifier = NSUserInterfaceItemIdentifier(rawValue: pair.key)
+        valueView.font = NSFont.systemFont(ofSize: 12, weight: .regular)
+        valueView.stringValue = "\(pair.value)%"
+        valueView.toolTip = pair.key
+        self.addArrangedSubview(valueView)
+    }
+}
--- a/Modules/Bluetooth/readers.swift
+++ b/Modules/Bluetooth/readers.swift
@@ -0,0 +1,179 @@
+//
+//  readers.swift
+//  Bluetooth
+//
+//  Created by Serhiy Mytrovtsiy on 08/06/2021.
+//  Using Swift 5.0.
+//  Running on macOS 10.15.
+//
+//  Copyright © 2021 Serhiy Mytrovtsiy. All rights reserved.
+//
+
+import Foundation
+import Kit
+import CoreBluetooth
+import IOBluetooth
+
+internal class DevicesReader: Reader<[BLEDevice]> {
+    private let ble: BluetoothDelegate = BluetoothDelegate()
+    
+    init() {
+        super.init()
+    }
+    
+    public override func read() {
+        self.ble.read()
+        self.callback(self.ble.devices)
+    }
+}
+
+class BluetoothDelegate: NSObject, CBCentralManagerDelegate, CBPeripheralDelegate {
+    private var manager: CBCentralManager!
+    private let cache = UserDefaults(suiteName: "/Library/Preferences/com.apple.Bluetooth")
+    
+    private var peripherals: [CBPeripheral] = []
+    public var devices: [BLEDevice] = []
+    private var characteristicsDict: [UUID: CBCharacteristic] = [:]
+    
+    private let batteryServiceUUID = CBUUID(string: "0x180F")
+    private let batteryCharacteristicsUUID = CBUUID(string: "0x2A19")
+    
+    override init() {
+        super.init()
+        self.manager = CBCentralManager.init(delegate: self, queue: nil)
+    }
+    
+    public func read() {
+        IOBluetoothDevice.pairedDevices().forEach { (d) in
+            guard let device = d as? IOBluetoothDevice,
+                  let cache = self.findInCache(address: device.addressString) else {
+                return
+            }
+            
+            let rssi = device.rawRSSI() == 127 ? nil : Int(device.rawRSSI())
+            
+            if let idx = self.devices.firstIndex(where: { $0.uuid == cache.uuid }) {
+                self.devices[idx].isConnected = device.isConnected()
+                self.devices[idx].isPaired = device.isPaired()
+                self.devices[idx].RSSI = rssi
+            } else {
+                self.devices.append(BLEDevice(
+                    uuid: cache.uuid,
+                    name: device.nameOrAddress,
+                    type: .unknown,
+                    RSSI: rssi,
+                    batteryLevel: cache.batteryLevel,
+                    isConnected: device.isConnected(),
+                    isPaired: device.isPaired(),
+                    isInitialized: false
+                ))
+            }
+        }
+    }
+    
+    private func findInCache(address: String) -> (uuid: UUID, batteryLevel: [KeyValue_t])? {
+        guard let plist = self.cache,
+              let deviceCache = plist.object(forKey: "DeviceCache") as? [String: [String: Any]],
+              let coreCache = plist.object(forKey: "CoreBluetoothCache") as? [String: [String: Any]] else {
+            return nil
+        }
+        
+        guard let uuid = coreCache.compactMap({ (key, dict) -> UUID? in
+            guard let field = dict.first(where: { $0.key == "DeviceAddress" }),
+                  let value = field.value as? String,
+                  value == address else {
+                return nil
+            }
+            return UUID(uuidString: key)
+        }).first else {
+            return nil
+        }
+        
+        var batteryLevel: [KeyValue_t] = []
+        if let d = deviceCache.first(where: { $0.key == address }) {
+            d.value.forEach { (key, value) in
+                guard let value = value as? Int, key == "BatteryPercentCase" || key == "BatteryPercentLeft" || key == "BatteryPercentRight" else {
+                    return
+                }
+                
+                batteryLevel.append(KeyValue_t(key: key, value: "\(value)"))
+            }
+        }
+        
+        return (uuid, batteryLevel)
+    }
+    
+    // MARK: - CBCentralManagerDelegate
+    
+    func centralManagerDidUpdateState(_ central: CBCentralManager) {
+        if central.state == .poweredOff {
+            self.manager.stopScan()
+        } else if central.state == .poweredOn {
+            self.manager.scanForPeripherals(withServices: nil, options: nil)
+        }
+    }
+    
+    func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String: Any], rssi RSSI: NSNumber) {
+        guard let idx = self.devices.firstIndex(where: { $0.uuid == peripheral.identifier }) else {
+            return
+        }
+        
+        if self.devices[idx].RSSI == nil {
+            self.devices[idx].RSSI = Int(truncating: RSSI)
+        }
+        
+        if self.devices[idx].peripheral == nil {
+            self.devices[idx].peripheral = peripheral
+        }
+        
+        if peripheral.state == .disconnected {
+            central.connect(peripheral, options: nil)
+        } else if peripheral.state == .connected && !self.devices[idx].isInitialized {
+            peripheral.delegate = self
+            peripheral.discoverServices([batteryServiceUUID])
+            self.devices[idx].isInitialized = true
+        }
+    }
+    
+    // MARK: - CBPeripheralDelegate
+    
+    func peripheral(_ peripheral: CBPeripheral, didDiscoverServices error: Error?) {
+        guard error == nil else {
+            print("didDiscoverServices: ", error!)
+            return
+        }
+        
+        guard let service = peripheral.services?.first(where: { $0.uuid == self.batteryServiceUUID }) else {
+            print("battery service not found, skipping")
+            return
+        }
+        
+        peripheral.discoverCharacteristics([self.batteryCharacteristicsUUID], for: service)
+    }
+    
+    func peripheral(_ peripheral: CBPeripheral, didDiscoverCharacteristicsFor service: CBService, error: Error?) {
+        guard error == nil else {
+            print("didDiscoverCharacteristicsFor: ", error!)
+            return
+        }
+        
+        guard let batteryCharacteristics = service.characteristics?.first(where: { $0.uuid == self.batteryCharacteristicsUUID }) else {
+            print("characteristics not found")
+            return
+        }
+        
+        self.characteristicsDict[peripheral.identifier] = batteryCharacteristics
+        peripheral.readValue(for: batteryCharacteristics)
+    }
+    
+    func peripheral(_ peripheral: CBPeripheral, didUpdateValueFor characteristic: CBCharacteristic, error: Error?) {
+        guard error == nil else {
+            print("didUpdateValueFor: ", error!)
+            return
+        }
+        
+        if let batteryLevel = characteristic.value?[0], let idx = self.devices.firstIndex(where: { $0.uuid == peripheral.identifier }) {
+            self.devices[idx].batteryLevel = [KeyValue_t(key: "battery", value: "\(batteryLevel)")]
+        }
+    }
+}
--- a/Modules/Bluetooth/settings.swift
+++ b/Modules/Bluetooth/settings.swift
@@ -0,0 +1,112 @@
+//
+//  settings.swift
+//  Bluetooth
+//
+//  Created by Serhiy Mytrovtsiy on 07/07/2021.
+//  Using Swift 5.0.
+//  Running on macOS 10.15.
+//
+//  Copyright © 2021 Serhiy Mytrovtsiy. All rights reserved.
+//
+
+import Cocoa
+import Kit
+
+internal class Settings: NSStackView, Settings_v {
+    public var callback: (() -> Void) = {}
+    public var selectedBatteryHandler: (String) -> Void = {_ in }
+    
+    private let title: String
+    private var selectedBattery: String
+    private var button: NSPopUpButton?
+    
+    public init(_ title: String) {
+        self.title = title
+        self.selectedBattery = Store.shared.string(key: "\(self.title)_battery", defaultValue: "")
+        
+        super.init(frame: NSRect(
+            x: 0,
+            y: 0,
+            width: Constants.Settings.width - (Constants.Settings.margin*2),
+            height: 0
+        ))
+        
+        self.orientation = .vertical
+        self.distribution = .gravityAreas
+        self.edgeInsets = NSEdgeInsets(
+            top: Constants.Settings.margin,
+            left: Constants.Settings.margin,
+            bottom: Constants.Settings.margin,
+            right: Constants.Settings.margin
+        )
+        self.spacing = Constants.Settings.margin
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    internal func load(widgets: [widget_t]) {
+        self.subviews.forEach{ $0.removeFromSuperview() }
+        
+        self.addArrangedSubview(self.deviceSelector())
+        
+        let h = self.arrangedSubviews.map({ $0.bounds.height + self.spacing }).reduce(0, +) - self.spacing + self.edgeInsets.top + self.edgeInsets.bottom
+        if self.frame.size.height != h {
+            self.setFrameSize(NSSize(width: self.bounds.width, height: h))
+        }
+    }
+    
+    private func deviceSelector() -> NSView {
+        let view: NSView = NSView(frame: NSRect(x: 0, y: 0, width: self.frame.width - Constants.Settings.margin*2, height: Constants.Settings.row))
+        
+        let rowTitle: NSTextField = LabelField(
+            frame: NSRect(x: 0, y: (view.frame.height - 16)/2, width: view.frame.width - 52, height: 17),
+            localizedString("Battery to show")
+        )
+        rowTitle.font = NSFont.systemFont(ofSize: 13, weight: .light)
+        rowTitle.textColor = .textColor
+        
+        self.button = NSPopUpButton(frame: NSRect(x: view.frame.width - 140, y: -1, width: 140, height: 30))
+        self.button!.target = self
+        self.button?.action = #selector(self.handleSelection)
+        
+        view.addSubview(rowTitle)
+        view.addSubview(self.button!)
+        
+        return view
+    }
+    
+    internal func setList(_ list: [BLEDevice]) {
+        var batteries: [String] = []
+        list.forEach { (d: BLEDevice) in
+            if d.batteryLevel.count == 1 {
+                batteries.append(d.name)
+            } else {
+                d.batteryLevel.forEach { (pair: KeyValue_t) in
+                    batteries.append("\(d.name)@\(pair.key)")
+                }
+            }
+        }
+        
+        DispatchQueue.main.async(execute: {
+            if self.button?.itemTitles.count != batteries.count {
+                self.button?.removeAllItems()
+            }
+            
+            if batteries != self.button?.itemTitles {
+                self.button?.addItems(withTitles: batteries.map{ $0.replacingOccurrences(of: "@", with: " - ")})
+                if self.selectedBattery != "" {
+                    self.button?.selectItem(withTitle: self.selectedBattery.replacingOccurrences(of: "@", with: " - "))
+                }
+            }
+        })
+    }
+    
+    @objc private func handleSelection(_ sender: NSPopUpButton) {
+        guard let item = sender.selectedItem else { return }
+        self.selectedBattery = item.title.replacingOccurrences(of: " - ", with: "@")
+        Store.shared.set(key: "\(self.title)_battery", value: self.selectedBattery)
+        self.selectedBatteryHandler(self.selectedBattery)
+    }
+}
--- a/Stats.xcodeproj/project.pbxproj
+++ b/Stats.xcodeproj/project.pbxproj
@@ -8,6 +8,12 @@

 /* Begin PBXBuildFile section */
 		9A045EB72594F8D100ED58F2 /* Dashboard.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A045EB62594F8D100ED58F2 /* Dashboard.swift */; };
+		9A11AAD6266FD77F000C1C05 /* Bluetooth.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 9A11AACF266FD77F000C1C05 /* Bluetooth.framework */; };
+		9A11AAD7266FD77F000C1C05 /* Bluetooth.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 9A11AACF266FD77F000C1C05 /* Bluetooth.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
+		9A11AAF4266FD7A7000C1C05 /* main.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A11AAF3266FD7A7000C1C05 /* main.swift */; };
+		9A11AB26266FD828000C1C05 /* config.plist in Resources */ = {isa = PBXBuildFile; fileRef = 9A11AB25266FD828000C1C05 /* config.plist */; };
+		9A11AB36266FD9F4000C1C05 /* readers.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A11AB35266FD9F4000C1C05 /* readers.swift */; };
+		9A11AB67266FDB69000C1C05 /* Kit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 9A2846F72666A9CC00EC1F6D /* Kit.framework */; };
 		9A27D5352538A456001BB651 /* Reachability in Frameworks */ = {isa = PBXBuildFile; productRef = 9A27D5342538A456001BB651 /* Reachability */; };
 		9A2846FE2666A9CC00EC1F6D /* Kit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 9A2846F72666A9CC00EC1F6D /* Kit.framework */; };
 		9A2846FF2666A9CC00EC1F6D /* Kit.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 9A2846F72666A9CC00EC1F6D /* Kit.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
@@ -75,6 +81,7 @@
 		9A81C7692449A43600825D92 /* main.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A81C7672449A43600825D92 /* main.swift */; };
 		9A81C76A2449A43600825D92 /* readers.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A81C7682449A43600825D92 /* readers.swift */; };
 		9A8AE0A326921A2A00B13054 /* Server.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A8AE0A226921A2A00B13054 /* Server.swift */; };
+		9A8B923D2696445C00FD6D83 /* settings.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A8B923C2696445C00FD6D83 /* settings.swift */; };
 		9A8DE58E253DEFA9006A748F /* Fans.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 9A8DE587253DEFA9006A748F /* Fans.framework */; };
 		9A8DE58F253DEFA9006A748F /* Fans.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 9A8DE587253DEFA9006A748F /* Fans.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		9A8DE5E4253DF4E2006A748F /* main.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A8DE5E3253DF4E2006A748F /* main.swift */; };
@@ -85,6 +92,7 @@
 		9A90E19624EAD35F00471E9A /* main.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A90E19524EAD35F00471E9A /* main.swift */; };
 		9A90E19824EAD3B000471E9A /* config.plist in Resources */ = {isa = PBXBuildFile; fileRef = 9A90E19724EAD3B000471E9A /* config.plist */; };
 		9A90E1A324EAD66600471E9A /* reader.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A90E1A224EAD66600471E9A /* reader.swift */; };
+		9A94B81F26822DE0001F4F2B /* popup.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A94B81E26822DE0001F4F2B /* popup.swift */; };
 		9A953A1424B9D22D0038EF4B /* settings.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A953A1324B9D22D0038EF4B /* settings.swift */; };
 		9A97CED12537331B00742D8F /* CPU.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 9A97CECA2537331B00742D8F /* CPU.framework */; };
 		9A97CED22537331B00742D8F /* CPU.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 9A97CECA2537331B00742D8F /* CPU.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
@@ -129,6 +137,20 @@
 /* End PBXBuildFile section */

 /* Begin PBXContainerItemProxy section */
+		9A11AAD4266FD77F000C1C05 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 9A1410ED229E721100D29793 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 9A11AACE266FD77F000C1C05;
+			remoteInfo = Bluetooth;
+		};
+		9A11AB69266FDB69000C1C05 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 9A1410ED229E721100D29793 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 9A2846F62666A9CC00EC1F6D;
+			remoteInfo = Kit;
+		};
 		9A2846FC2666A9CC00EC1F6D /* PBXContainerItemProxy */ = {
 			isa = PBXContainerItemProxy;
 			containerPortal = 9A1410ED229E721100D29793 /* Project object */;
@@ -270,6 +292,7 @@
 				9AF9EE0A24648751005D2270 /* Disk.framework in Embed Frameworks */,
 				9A81C75E2449A41400825D92 /* RAM.framework in Embed Frameworks */,
 				9AE29ADD249A50350071B02D /* Sensors.framework in Embed Frameworks */,
+				9A11AAD7266FD77F000C1C05 /* Bluetooth.framework in Embed Frameworks */,
 				9A2846FF2666A9CC00EC1F6D /* Kit.framework in Embed Frameworks */,
 				9ABFF8FE248BEBCB00C9041A /* Battery.framework in Embed Frameworks */,
 				9A3E17D4247A94AF00449CD1 /* Net.framework in Embed Frameworks */,
@@ -316,6 +339,11 @@
 		98BF5451254DF04C004E9DF5 /* vi */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = vi; path = vi.lproj/Localizable.strings; sourceTree = "<group>"; };
 		9A00010025CFF9D6001D02B9 /* bg */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = bg; path = bg.lproj/Localizable.strings; sourceTree = "<group>"; };
 		9A045EB62594F8D100ED58F2 /* Dashboard.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Dashboard.swift; sourceTree = "<group>"; };
+		9A11AACF266FD77F000C1C05 /* Bluetooth.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Bluetooth.framework; sourceTree = BUILT_PRODUCTS_DIR; };
+		9A11AAD2266FD77F000C1C05 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		9A11AAF3266FD7A7000C1C05 /* main.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = main.swift; sourceTree = "<group>"; };
+		9A11AB25266FD828000C1C05 /* config.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = config.plist; sourceTree = "<group>"; };
+		9A11AB35266FD9F4000C1C05 /* readers.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = readers.swift; sourceTree = "<group>"; };
 		9A1410F5229E721100D29793 /* Stats.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Stats.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		9A141101229E721200D29793 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		9A27D4A925389EFD001BB651 /* Stats.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = Stats.entitlements; sourceTree = "<group>"; };
@@ -378,6 +406,7 @@
 		9A81C7672449A43600825D92 /* main.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = main.swift; sourceTree = "<group>"; };
 		9A81C7682449A43600825D92 /* readers.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = readers.swift; sourceTree = "<group>"; };
 		9A8AE0A226921A2A00B13054 /* Server.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Server.swift; sourceTree = "<group>"; };
+		9A8B923C2696445C00FD6D83 /* settings.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = settings.swift; sourceTree = "<group>"; };
 		9A8DE587253DEFA9006A748F /* Fans.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Fans.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		9A8DE58A253DEFA9006A748F /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		9A8DE5E3253DF4E2006A748F /* main.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = main.swift; sourceTree = "<group>"; };
@@ -388,6 +417,7 @@
 		9A90E19524EAD35F00471E9A /* main.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = main.swift; sourceTree = "<group>"; };
 		9A90E19724EAD3B000471E9A /* config.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = config.plist; sourceTree = "<group>"; };
 		9A90E1A224EAD66600471E9A /* reader.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = reader.swift; sourceTree = "<group>"; };
+		9A94B81E26822DE0001F4F2B /* popup.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = popup.swift; sourceTree = "<group>"; };
 		9A953A1324B9D22D0038EF4B /* settings.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = settings.swift; sourceTree = "<group>"; };
 		9A97CE2A25371B2300742D8F /* IntelPowerGadget.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = IntelPowerGadget.framework; path = ../../../Library/Frameworks/IntelPowerGadget.framework; sourceTree = "<group>"; };
 		9A97CECA2537331B00742D8F /* CPU.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = CPU.framework; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -441,6 +471,14 @@
 /* End PBXFileReference section */

 /* Begin PBXFrameworksBuildPhase section */
+		9A11AACC266FD77F000C1C05 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				9A11AB67266FDB69000C1C05 /* Kit.framework in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		9A1410F2229E721100D29793 /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
@@ -448,6 +486,7 @@
 				9AF9EE0924648751005D2270 /* Disk.framework in Frameworks */,
 				9AE29ADC249A50350071B02D /* Sensors.framework in Frameworks */,
 				9ABFF8FD248BEBCB00C9041A /* Battery.framework in Frameworks */,
+				9A11AAD6266FD77F000C1C05 /* Bluetooth.framework in Frameworks */,
 				9A2846FE2666A9CC00EC1F6D /* Kit.framework in Frameworks */,
 				9A81C75D2449A41400825D92 /* RAM.framework in Frameworks */,
 				9A8DE58E253DEFA9006A748F /* Fans.framework in Frameworks */,
@@ -548,6 +587,19 @@
 /* End PBXFrameworksBuildPhase section */

 /* Begin PBXGroup section */
+		9A11AAD0266FD77F000C1C05 /* Bluetooth */ = {
+			isa = PBXGroup;
+			children = (
+				9A11AAF3266FD7A7000C1C05 /* main.swift */,
+				9A11AB35266FD9F4000C1C05 /* readers.swift */,
+				9A94B81E26822DE0001F4F2B /* popup.swift */,
+				9A8B923C2696445C00FD6D83 /* settings.swift */,
+				9A11AAD2266FD77F000C1C05 /* Info.plist */,
+				9A11AB25266FD828000C1C05 /* config.plist */,
+			);
+			path = Bluetooth;
+			sourceTree = "<group>";
+		};
 		9A1410EC229E721100D29793 = {
 			isa = PBXGroup;
 			children = (
@@ -576,6 +628,7 @@
 				9A8DE587253DEFA9006A748F /* Fans.framework */,
 				9ADE6FD8265D032100D2FBA8 /* smc */,
 				9A2846F72666A9CC00EC1F6D /* Kit.framework */,
+				9A11AACF266FD77F000C1C05 /* Bluetooth.framework */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -787,6 +840,7 @@
 				9A8DE588253DEFA9006A748F /* Fans */,
 				9A3E17CD247A94AF00449CD1 /* Net */,
 				9ABFF8F7248BEBCB00C9041A /* Battery */,
+				9A11AAD0266FD77F000C1C05 /* Bluetooth */,
 			);
 			path = Modules;
 			sourceTree = "<group>";
@@ -845,6 +899,13 @@
 /* End PBXGroup section */

 /* Begin PBXHeadersBuildPhase section */
+		9A11AACA266FD77F000C1C05 /* Headers */ = {
+			isa = PBXHeadersBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		9A2846F22666A9CC00EC1F6D /* Headers */ = {
 			isa = PBXHeadersBuildPhase;
 			buildActionMask = 2147483647;
@@ -911,6 +972,25 @@
 /* End PBXHeadersBuildPhase section */

 /* Begin PBXNativeTarget section */
+		9A11AACE266FD77F000C1C05 /* Bluetooth */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 9A11AADA266FD77F000C1C05 /* Build configuration list for PBXNativeTarget "Bluetooth" */;
+			buildPhases = (
+				9A11AACA266FD77F000C1C05 /* Headers */,
+				9A11AACB266FD77F000C1C05 /* Sources */,
+				9A11AACC266FD77F000C1C05 /* Frameworks */,
+				9A11AACD266FD77F000C1C05 /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+				9A11AB6A266FDB69000C1C05 /* PBXTargetDependency */,
+			);
+			name = Bluetooth;
+			productName = Bluetooth;
+			productReference = 9A11AACF266FD77F000C1C05 /* Bluetooth.framework */;
+			productType = "com.apple.product-type.framework";
+		};
 		9A1410F4229E721100D29793 /* Stats */ = {
 			isa = PBXNativeTarget;
 			buildConfigurationList = 9A141105229E721200D29793 /* Build configuration list for PBXNativeTarget "Stats" */;
@@ -936,6 +1016,7 @@
 				9A97CED02537331B00742D8F /* PBXTargetDependency */,
 				9A8DE58D253DEFA9006A748F /* PBXTargetDependency */,
 				9A2846FD2666A9CC00EC1F6D /* PBXTargetDependency */,
+				9A11AAD5266FD77F000C1C05 /* PBXTargetDependency */,
 			);
 			name = Stats;
 			packageProductDependencies = (
@@ -1166,6 +1247,10 @@
 				LastUpgradeCheck = 1250;
 				ORGANIZATIONNAME = "Serhiy Mytrovtsiy";
 				TargetAttributes = {
+					9A11AACE266FD77F000C1C05 = {
+						CreatedOnToolsVersion = 12.4;
+						LastSwiftMigration = 1240;
+					};
 					9A1410F4229E721100D29793 = {
 						CreatedOnToolsVersion = 10.2.1;
 						LastSwiftMigration = 1030;
@@ -1262,6 +1347,7 @@
 			targets = (
 				9A1410F4229E721100D29793 /* Stats */,
 				9A343526243E26A0006B19F9 /* LaunchAtLogin */,
+				9ADE6FD7265D032100D2FBA8 /* SMC */,
 				9A2846F62666A9CC00EC1F6D /* Kit */,
 				9A97CEC92537331B00742D8F /* CPU */,
 				9A90E18824EAD2BB00471E9A /* GPU */,
@@ -1271,12 +1357,20 @@
 				9ABFF8F5248BEBCB00C9041A /* Battery */,
 				9AE29AD4249A50350071B02D /* Sensors */,
 				9A8DE586253DEFA9006A748F /* Fans */,
-				9ADE6FD7265D032100D2FBA8 /* SMC */,
+				9A11AACE266FD77F000C1C05 /* Bluetooth */,
 			);
 		};
 /* End PBXProject section */

 /* Begin PBXResourcesBuildPhase section */
+		9A11AACD266FD77F000C1C05 /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				9A11AB26266FD828000C1C05 /* config.plist in Resources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		9A1410F3229E721100D29793 /* Resources */ = {
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -1390,6 +1484,17 @@
 /* End PBXShellScriptBuildPhase section */

 /* Begin PBXSourcesBuildPhase section */
+		9A11AACB266FD77F000C1C05 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				9A11AB36266FD9F4000C1C05 /* readers.swift in Sources */,
+				9A94B81F26822DE0001F4F2B /* popup.swift in Sources */,
+				9A8B923D2696445C00FD6D83 /* settings.swift in Sources */,
+				9A11AAF4266FD7A7000C1C05 /* main.swift in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		9A1410F1229E721100D29793 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -1551,6 +1656,16 @@
 /* End PBXSourcesBuildPhase section */

 /* Begin PBXTargetDependency section */
+		9A11AAD5266FD77F000C1C05 /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 9A11AACE266FD77F000C1C05 /* Bluetooth */;
+			targetProxy = 9A11AAD4266FD77F000C1C05 /* PBXContainerItemProxy */;
+		};
+		9A11AB6A266FDB69000C1C05 /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 9A2846F62666A9CC00EC1F6D /* Kit */;
+			targetProxy = 9A11AB69266FDB69000C1C05 /* PBXContainerItemProxy */;
+		};
 		9A2846FD2666A9CC00EC1F6D /* PBXTargetDependency */ = {
 			isa = PBXTargetDependency;
 			target = 9A2846F62666A9CC00EC1F6D /* Kit */;
@@ -1671,6 +1786,67 @@
 /* End PBXVariantGroup section */

 /* Begin XCBuildConfiguration section */
+		9A11AAD8266FD77F000C1C05 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_ENABLE_MODULES = YES;
+				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				CURRENT_PROJECT_VERSION = 1;
+				DEFINES_MODULE = YES;
+				DEVELOPMENT_TEAM = RP2S87B72W;
+				DYLIB_COMPATIBILITY_VERSION = 1;
+				DYLIB_CURRENT_VERSION = 1;
+				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				INFOPLIST_FILE = Modules/Bluetooth/Info.plist;
+				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+					"@loader_path/Frameworks",
+				);
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
+				PRODUCT_BUNDLE_IDENTIFIER = eu.exelban.Stats.Bluetooth;
+				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
+				SKIP_INSTALL = YES;
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
+				VERSIONING_SYSTEM = "apple-generic";
+				VERSION_INFO_PREFIX = "";
+			};
+			name = Debug;
+		};
+		9A11AAD9266FD77F000C1C05 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_ENABLE_MODULES = YES;
+				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				CURRENT_PROJECT_VERSION = 1;
+				DEFINES_MODULE = YES;
+				DEVELOPMENT_TEAM = RP2S87B72W;
+				DYLIB_COMPATIBILITY_VERSION = 1;
+				DYLIB_CURRENT_VERSION = 1;
+				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				INFOPLIST_FILE = Modules/Bluetooth/Info.plist;
+				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+					"@loader_path/Frameworks",
+				);
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
+				PRODUCT_BUNDLE_IDENTIFIER = eu.exelban.Stats.Bluetooth;
+				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
+				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 5.0;
+				VERSIONING_SYSTEM = "apple-generic";
+				VERSION_INFO_PREFIX = "";
+			};
+			name = Release;
+		};
 		9A141103229E721200D29793 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
@@ -2528,6 +2704,15 @@
 /* End XCBuildConfiguration section */

 /* Begin XCConfigurationList section */
+		9A11AADA266FD77F000C1C05 /* Build configuration list for PBXNativeTarget "Bluetooth" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				9A11AAD8266FD77F000C1C05 /* Debug */,
+				9A11AAD9266FD77F000C1C05 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 		9A1410F0229E721100D29793 /* Build configuration list for PBXProject "Stats" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
--- a/Stats/AppDelegate.swift
+++ b/Stats/AppDelegate.swift
@@ -18,6 +18,7 @@ import Battery
 import Sensors
 import GPU
 import Fans
+import Bluetooth

 let updater = macAppUpdater(user: "exelban", repo: "stats")
 var modules: [Module] = [
@@ -28,7 +29,8 @@ var modules: [Module] = [
    Sensors(),
    Fans(),
    Network(),
-    Battery()
+    Battery(),
+    Bluetooth()
 ]

 class AppDelegate: NSObject, NSApplicationDelegate, NSUserNotificationCenterDelegate {