import CoreLocation
import SwiftUI

class LocationService: NSObject, ObservableObject {
    @Published var currentLocation: CLLocation?
    @Published var authorizationStatus: CLAuthorizationStatus = .notDetermined
    @Published var error: String?

    private let locationManager = CLLocationManager()

    override init() {
        super.init()
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters
        authorizationStatus = locationManager.authorizationStatus
    }

    func requestPermission() {
        locationManager.requestWhenInUseAuthorization()
    }

    func requestLocation() {
        guard authorizationStatus == .authorizedWhenInUse || authorizationStatus == .authorizedAlways else {
            requestPermission()
            return
        }
        locationManager.requestLocation()
    }

    func hasPermission() -> Bool {
        return authorizationStatus == .authorizedWhenInUse || authorizationStatus == .authorizedAlways
    }
}

// MARK: - CLLocationManagerDelegate
extension LocationService: CLLocationManagerDelegate {
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        currentLocation = locations.last
    }

    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        self.error = error.localizedDescription
    }

    func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
        authorizationStatus = manager.authorizationStatus
        if hasPermission() {
            requestLocation()
        }
    }
}