//
//  LokasiBalaiUjiVC.swift
//  Sirani
//
//  Created by Anhar Solehudin on 05/04/19.
//  Copyright © 2019 Anhar Solehudin. All rights reserved.
//

import UIKit
import GoogleMaps
import MapKit

class LokasiBalaiUjiVC: UIViewController {

    @IBOutlet weak var mapView: GMSMapView!
    @IBOutlet weak var btnDirection: UIButton!
    
    private var locationManager = CLLocationManager()
    private var currentLocation: CLLocation?
    private var zoomLevel: Float = 7.0
    private var userMarker: GMSMarker?
    private var presenter: LokasiBalaiUjiPresenter!
    private var dataList: [BalaiUji] =  [BalaiUji]()
    private var loading = false
    
    // View Lifecycles
    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()

        locationManager = CLLocationManager()
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
        locationManager.requestWhenInUseAuthorization()
        locationManager.distanceFilter = 50
        locationManager.startUpdatingLocation()
        locationManager.delegate = self
        
        presenter = LokasiBalaiUjiPresenter(siraniApiServices: SiraniApiServices())
    }
    
    override func viewWillAppear(_ animated: Bool) {
        presenter.attachView(view: self)
        
        btnDirection.bringSubviewToFront(mapView)
        btnDirection.layer.cornerRadius = 5
        btnDirection.layer.borderWidth = 0.5
        btnDirection.layer.borderColor = #colorLiteral(red: 0.6000000238, green: 0.6000000238, blue: 0.6000000238, alpha: 1)
    }
    
    override func viewDidDisappear(_ animated: Bool) {
        presenter.detachView()
    }
    
    private func loadData() {
        if !loading {
            if ConnectionHelper.isConnectedToNetwork() {
                presenter.loadData()
            }
        }
    }
    
    @IBAction func onBtnBackTap(_ sender: Any) {
        performSegue(withIdentifier: "unwindLokasiBalaiUjiToBalaiUji", sender: self)
    }
    
    @IBAction func onBtnDirectionTap(_ sender: Any) {
        if let selectedMarker = mapView.selectedMarker {
            var markerData: String = "lokasi-balai-uji"
            if selectedMarker.userData != nil {
                markerData = selectedMarker.userData as! String
            }
            
            if markerData != "user-tag" {
                let position = selectedMarker.position
                let mapItem = MKMapItem(placemark: MKPlacemark(coordinate: position, addressDictionary:nil))
                mapItem.name =  selectedMarker.title ?? "Lokasi Balai Uji"
                mapItem.openInMaps(launchOptions: [MKLaunchOptionsDirectionsModeKey : MKLaunchOptionsDirectionsModeDriving])
            }
        }
    }
    
}

extension LokasiBalaiUjiVC: CLLocationManagerDelegate {
    
    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
        switch status {
        case .restricted:
            print("Location access was restricted.")
        case .denied:
            print("User denied access to location.")
        case .notDetermined:
            print("Location status not determined.")
        case .authorizedAlways: fallthrough
        case .authorizedWhenInUse:
            print("Location status is OK.")
            
            locationManager.startUpdatingLocation()
            mapView.isMyLocationEnabled = false
            mapView.settings.myLocationButton = false
        @unknown default:
            print("Error Load Map")
        }
    }
    
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        guard let location = locations.first else { return }
        mapView.camera = GMSCameraPosition(target: location.coordinate, zoom: zoomLevel, bearing: 0, viewingAngle: 0)
        locationManager.stopUpdatingLocation()
        
        currentLocation = location
        
        // update user marker
        userMarker = GMSMarker()
        userMarker?.icon = UIImage(named: "user-marker")
        userMarker?.position = CLLocationCoordinate2D(latitude: location.coordinate.latitude, longitude: location.coordinate.longitude)
        userMarker?.title = "Anda Sedang di Lokasi Ini"
        userMarker?.map = mapView
        userMarker?.userData = "user-tag"
        mapView.selectedMarker = userMarker
        
        // load data
        loadData()
    }
    
    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        locationManager.stopUpdatingLocation()
        print("Error: \(error)")
    }
    
}

extension LokasiBalaiUjiVC: LokasiBalaiUjiViewDelegate {
    
    func showLoading() {
        loading = true
    }
    
    func hideLoading() {
        loading = false
    }
    
    func setDataList(dataList: [BalaiUji]) {
        for data in dataList {
            self.dataList.append(data)
            
            // add marker (latitude masih tertukar dgn longitud dr source data)
            let dlat = Double(data.longitude)
            let dlng = Double(data.latitude)
            
            let lat = CLLocationDegrees(exactly: dlat!)
            let lng = CLLocationDegrees(exactly: dlng!)
            
            let balaiUjiMarker = GMSMarker()
            balaiUjiMarker.icon = GMSMarker.markerImage(with: #colorLiteral(red: 0.1411764771, green: 0.3960784376, blue: 0.5647059083, alpha: 1))
            balaiUjiMarker.position = CLLocationCoordinate2D(latitude: lat!, longitude: lng!)
            balaiUjiMarker.title = data.nama
            
            if let userLocation = self.currentLocation {
                let lokasiBalaiUji = CLLocation(latitude: dlat!, longitude: dlng!)
                let distanceInMeters = lokasiBalaiUji.distance(from: userLocation)
                let distanceInKm: Int = (Int(distanceInMeters/1000))
                balaiUjiMarker.snippet = "Jarak \(distanceInKm) km"
            }
            
            balaiUjiMarker.map = mapView
        }
    }
}