BackgroundLocation.swift

BackgroundLocation.swift

//  BackgroundLocation.swift

import Foundation

class LocationManger : NSObject, CLLocationManagerDelegate {
    
    static let sharedManager = LocationManger()
    var locationManager:CLLocationManager!
    var lastTimestamp:NSDate!
    
    override init() {
        super.init()
        self.locationManager = CLLocationManager()
        self.locationManager.delegate = self
        self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
        self.locationManager.pausesLocationUpdatesAutomatically = false
    }
    
    func startUpdatingLocation() {
        if CLLocationManager.authorizationStatus() == .Denied {
            print("Location services are disabled in settings.")
        } else {
            if #available(iOS 8.0, *) {
                self.locationManager.requestAlwaysAuthorization()
            }
            if #available(iOS 9.0, *) {
                self.locationManager.allowsBackgroundLocationUpdates = true
            }
        self.locationManager.startUpdatingLocation()
        }
    }
    
    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        if let mostRecentLocation = locations.last {
            print("Current location: \(mostRecentLocation.coordinate.latitude), \(mostRecentLocation.coordinate.longitude)")
        }
        let now = NSDate()
        let interval = self.lastTimestamp != nil ? now.timeIntervalSinceDate(self.lastTimestamp) : 0
        if (self.lastTimestamp == nil || interval >= 5 * 60) {
            self.lastTimestamp = now
            print("Sending current location to web service.")
        }
    }
    
}