import UIKit
    import CoreLocation
    import Alamofire
    import SwiftyJSON

    class ViewController: UIViewController, CLLocationManagerDelegate {

    let base_URL = "https://api.darksky.net/forecast/[API Key]/"

        //Instance variable
        let locationManager = CLLocationManager()
        let windDataModel = WindDataModel()

        @IBOutlet weak var windDirectionArrow: UIImageView!
        @IBOutlet weak var yard: UILabel!
        @IBOutlet weak var gust: UILabel!
        @IBOutlet weak var wind: UILabel!


        override func viewDidLoad() {
            super.viewDidLoad()

            //Location manager set up
            locationManager.delegate = self
            locationManager.desiredAccuracy = kCLLocationAccuracyBest
            locationManager.requestWhenInUseAuthorization()
            locationManager.startUpdatingHeading()
            locationManager.startUpdatingLocation()

        }

        //Update location heading and course

        func locationManager(manager: CLLocationManager, didUpdateHeading newHeading: CLHeading) {
            print (newHeading.trueHeading)

        }



        //Get wind data method

        func getWindData(url: String, latitude: String, longitude: String) {

            let urlStr = "(base_URL)(latitude),(longitude)"
            Alamofire.request(urlStr, method: .get, parameters:nil, encoding: JSONEncoding.default).responseJSON { [weak self]

                response in
                if response.result.isSuccess {

                    print("Success! Got the weather data")
                    let windJSON : JSON = JSON(response.result.value!)

self!.updateWindData (json: windJSON)
                }

                else {
                    print("Error (String(describing: response.result.error))")
                    self?.wind.text = "Connection issues" }

            }

        }

//Write the updateWeatherData method here:

        func updateWindData(json: JSON) {

            let windSpeed = json["currently"]["windSpeed"].intValue

           windDataModel.speed = windSpeed

            let windGust = json["currently"]["windGust"].intValue

            windDataModel.gust = windGust

           let windBearing = json["currently"]["windBearing"].doubleValue

            windDataModel.bearing = windBearing - newHeading.trueHeading

            windDataModel.arrow = windDataModel.updateArrowIcon(bearing: windDataModel.bearing)

            updateUIWithWindData()
        }


        //Write the updateUIWithWeatherData method here:

        func updateUIWithWindData() {

            wind.text = "Wind (windDataModel.speed) MPH"
            gust.text = "Gusts (windDataModel.gust) MPH"
            yard.text = String(windDataModel.bearing)
            windDirectionArrow.image = UIImage(named: windDataModel.arrow)
        }



        //Did update method

        func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
            let location = locations[locations.count - 1]
            if location.horizontalAccuracy > 0 {
            self.locationManager.stopUpdatingLocation()
                self.locationManager.delegate = nil

                let latitude = String(location.coordinate.latitude)
                let longitude = String(location.coordinate.longitude)

                getWindData(url: base_URL, latitude: latitude, longitude: longitude)
            }
        }


        //Did fail with error method
        func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
            print(error)
            wind.text = "Error"
        }

    }