// Battery monitoring service
public class BatteryUsageMonitor {
    public static let shared = BatteryUsageMonitor()
    
    public func startMonitoring()
    public func stopMonitoring()
    public func getCurrentEnergyImpact() -> EnergyImpact
    public func getComponentBreakdown() -> [EnergyComponent: Double]
}

struct EnergyImpact {
    enum Level: Int {
        case veryLow = 1
        case low = 2
        case moderate = 3
        case high = 4
        case veryHigh = 5
    }
    
    let level: Level
    let score: Double // 0-100
    let components: [EnergyComponent: Double]
}

enum EnergyComponent {
    case cpu
    case gpu
    case network
    case location
    case display
    case other
}

struct EnergySession {
    let id: UUID
    let startTime: Date
    let endTime: Date?
    let batteryStart: Float
    let batteryEnd: Float?
    let energyBreakdown: [EnergyComponent: Double]
    let featureUsage: [String: EnergyImpact]
}

func setupBatteryMonitoring() {
    UIDevice.current.isBatteryMonitoringEnabled = true
    
    NotificationCenter.default.addObserver(
        self,
        selector: #selector(batteryLevelChanged),
        name: UIDevice.batteryLevelDidChangeNotification,
        object: nil
    )
    
    NotificationCenter.default.addObserver(
        self,
        selector: #selector(batteryStateChanged),
        name: UIDevice.batteryStateDidChangeNotification,
        object: nil
    )
}

@objc func batteryLevelChanged() {
    let level = UIDevice.current.batteryLevel
    let state = UIDevice.current.batteryState
    
    recordBatteryLevel(level, state: state)
}

func trackCPUEnergy() {
    let info = ProcessInfo.processInfo
    
    // CPU usage
    var threadsList: thread_act_array_t?
    var threadsCount: mach_msg_type_number_t = 0
    
    let result = task_threads(mach_task_self_, &threadsList, &threadsCount)
    guard result == KERN_SUCCESS else { return }
    
    var totalCPU: Double = 0
    
    for index in 0..<Int(threadsCount) {
        var threadInfo = thread_basic_info()
        var threadInfoCount = mach_msg_type_number_t(THREAD_INFO_MAX)
        
        let infoResult = withUnsafeMutablePointer(to: &threadInfo) {
            $0.withMemoryRebound(to: integer_t.self, capacity: 1) {
                thread_info(threadsList![index], thread_flavor_t(THREAD_BASIC_INFO),
                           $0, &threadInfoCount)
            }
        }
        
        if infoResult == KERN_SUCCESS {
            let cpuUsage = Double(threadInfo.cpu_usage) / Double(TH_USAGE_SCALE)
            totalCPU += cpuUsage
        }
    }
    
    recordCPUEnergy(totalCPU)
}

func trackNetworkEnergy() {
    // Monitor network activity
    let monitor = NWPathMonitor()
    
    monitor.pathUpdateHandler = { path in
        if path.status == .satisfied {
            // Track data transfer
            let bytesReceived = self.getBytesReceived()
            let bytesSent = self.getBytesSent()
            
            let energyCost = self.calculateNetworkEnergy(
                received: bytesReceived,
                sent: bytesSent,
                interface: path.availableInterfaces.first?.type
            )
            
            self.recordNetworkEnergy(energyCost)
        }
    }
}

func trackLocationEnergy() {
    // Monitor CLLocationManager activity
    let accuracy = locationManager.desiredAccuracy
    let isUpdating = locationManager.location != nil
    
    let energyCost: Double
    switch accuracy {
    case kCLLocationAccuracyBestForNavigation:
        energyCost = 1.0 // Very high
    case kCLLocationAccuracyBest:
        energyCost = 0.8 // High
    case kCLLocationAccuracyNearestTenMeters:
        energyCost = 0.5 // Moderate
    case kCLLocationAccuracyHundredMeters:
        energyCost = 0.3 // Low
    default:
        energyCost = 0.1 // Very low
    }
    
    recordLocationEnergy(energyCost)
}

### Battery Usage Monitor
- Real-time battery and energy monitoring
- Component breakdown (CPU, GPU, Network, Location)
- Feature-level energy attribution
- Optimization suggestions
- Energy profiling sessions

// Configuration
DebugSwift.Performance.shared.enableBatteryMonitoring = true

// Set energy budget
DebugSwift.Performance.shared.energyBudget = .moderate

// Callback for high energy usage
DebugSwift.Performance.shared.onHighEnergyUsage { component in
    print("High energy usage detected: \(component)")
}