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//
// AircraftRepository.swift
// LearnMapKit
//
// Aircraft data management and state tracking
//
import Foundation
import Combine
// MARK: - Aircraft Model
struct Aircraft: Identifiable, Equatable {
let id: Int // ICAO address
let icaoAddress: Int
let icaoName: String?
let position: Position?
let altitude: Int?
let lastSeen: Date
let flightInfo: FlightInfo?
struct Position: Equatable {
let latitude: Double
let longitude: Double
let accuracy: PositionAccuracy
let timestamp: Date
enum PositionAccuracy {
case unknown, low, medium, high
}
}
struct FlightInfo {
let from: String?
let to: String?
let route: String?
}
// Computed properties for UI
var isActive: Bool {
Date().timeIntervalSince(lastSeen) < 300 // 5 minutes
}
var displayName: String {
icaoName ?? "Unknown (\(String(format: "%06X", icaoAddress)))"
}
}
// MARK: - Aircraft Repository Protocol
protocol AircraftRepository: AnyObject {
var aircraftStream: AnyPublisher<[Aircraft], Never> { get }
var aircraftCount: AnyPublisher<Int, Never> { get }
func getAllAircraft() -> [Aircraft]
func getAircraft(withId id: Int) -> Aircraft?
func updateAircraft(with event: ADSBDataEvent)
func removeInactiveAircraft()
func clearAll()
}
// MARK: - Default Implementation
@MainActor
class DefaultAircraftRepository: AircraftRepository {
// MARK: - Published Properties
var aircraftStream: AnyPublisher<[Aircraft], Never> {
aircraftSubject.eraseToAnyPublisher()
}
var aircraftCount: AnyPublisher<Int, Never> {
aircraftSubject
.map { $0.count }
.removeDuplicates()
.eraseToAnyPublisher()
}
// MARK: - Private Properties
private let aircraftSubject = CurrentValueSubject<[Aircraft], Never>([])
private var aircraftCache: [Int: Aircraft] = [:]
// Dependencies
private let tracker: AircraftTracker
init(tracker: AircraftTracker = DefaultAircraftTracker()) {
self.tracker = tracker
startCleanupTimer()
}
// MARK: - AircraftRepository Implementation
func getAllAircraft() -> [Aircraft] {
Array(aircraftCache.values)
.filter { $0.isActive }
.sorted { $0.lastSeen > $1.lastSeen }
}
func getAircraft(withId id: Int) -> Aircraft? {
aircraftCache[id]
}
func updateAircraft(with event: ADSBDataEvent) {
switch event {
case .aircraftIdentification(let address, let icaoName):
updateIdentification(address: address, icaoName: icaoName)
case .aircraftPosition(let address, let latitude, let longitude):
updatePosition(address: address, latitude: latitude, longitude: longitude)
case .aircraftAltitude(let address, let altitude):
updateAltitude(address: address, altitude: altitude)
case .rawMessage, .error:
break // Handle these separately if needed
}
}
func removeInactiveAircraft() {
let activeAircraft = aircraftCache.filter { _, aircraft in
aircraft.isActive
}
if activeAircraft.count != aircraftCache.count {
aircraftCache = activeAircraft
publishUpdate()
}
}
func clearAll() {
aircraftCache.removeAll()
publishUpdate()
}
// MARK: - Private Update Methods
private func updateIdentification(address: Int, icaoName: String) {
let aircraft = getOrCreateAircraft(address: address)
let updated = Aircraft(
id: aircraft.id,
icaoAddress: aircraft.icaoAddress,
icaoName: icaoName,
position: aircraft.position,
altitude: aircraft.altitude,
lastSeen: Date(),
flightInfo: aircraft.flightInfo
)
aircraftCache[address] = updated
publishUpdate()
}
private func updatePosition(address: Int, latitude: Double, longitude: Double) {
Task {
// Update the tracker for position calculation
await tracker.updatePosition(address: address, latitude: latitude, longitude: longitude)
// Get calculated position from tracker
if let calculatedPosition = await tracker.getPosition(address: address) {
let aircraft = getOrCreateAircraft(address: address)
let position = Aircraft.Position(
latitude: calculatedPosition.0,
longitude: calculatedPosition.1,
accuracy: .medium, // TODO: Determine accuracy from tracker
timestamp: Date()
)
let updated = Aircraft(
id: aircraft.id,
icaoAddress: aircraft.icaoAddress,
icaoName: aircraft.icaoName,
position: position,
altitude: aircraft.altitude,
lastSeen: Date(),
flightInfo: aircraft.flightInfo
)
aircraftCache[address] = updated
publishUpdate()
}
}
}
private func updateAltitude(address: Int, altitude: Int) {
let aircraft = getOrCreateAircraft(address: address)
let updated = Aircraft(
id: aircraft.id,
icaoAddress: aircraft.icaoAddress,
icaoName: aircraft.icaoName,
position: aircraft.position,
altitude: altitude,
lastSeen: Date(),
flightInfo: aircraft.flightInfo
)
aircraftCache[address] = updated
publishUpdate()
}
private func getOrCreateAircraft(address: Int) -> Aircraft {
if let existing = aircraftCache[address] {
return existing
}
let newAircraft = Aircraft(
id: address,
icaoAddress: address,
icaoName: nil,
position: nil,
altitude: nil,
lastSeen: Date(),
flightInfo: nil
)
return newAircraft
}
private func publishUpdate() {
let currentAircraft = getAllAircraft()
aircraftSubject.send(currentAircraft)
}
private func startCleanupTimer() {
Timer.scheduledTimer(withTimeInterval: 60.0, repeats: true) { [weak self] _ in
self?.removeInactiveAircraft()
}
}
}
// MARK: - Aircraft Tracker Protocol
protocol AircraftTracker: Actor {
func updateIdentification(address: Int, icaoName: String) async
func updatePosition(address: Int, latitude: Double, longitude: Double) async
func updateAltitude(address: Int, altitude: Int) async
func getPosition(address: Int) async -> (Double, Double)?
func getAltitude(address: Int) async -> Int?
func getICAOName(address: Int) async -> String?
}
// MARK: - Default Aircraft Tracker (Adapter for existing AirPlaneTracker)
actor DefaultAircraftTracker: AircraftTracker {
private let airplaneTracker = AirPlaneTracker()
func updateIdentification(address: Int, icaoName: String) async {
airplaneTracker.addDF17Indentification(address, icaoName)
}
func updatePosition(address: Int, latitude: Double, longitude: Double) async {
// Note: The original tracker expects CPR coordinates, not lat/long
// This is a simplified adapter - you might need to adjust based on your data flow
airplaneTracker.addDF17AirBornPosition(address, latitude, longitude, 0, true)
}
func updateAltitude(address: Int, altitude: Int) async {
// Altitude is typically updated with position in the original tracker
// This might need adjustment based on your specific needs
}
func getPosition(address: Int) async -> (Double, Double)? {
return airplaneTracker.getPosition(address)
}
func getAltitude(address: Int) async -> Int? {
return airplaneTracker.getAltitude(address)
}
func getICAOName(address: Int) async -> String? {
return airplaneTracker.getICAOname(address)
}
}
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