import types_module = require("Location/location_types");
import app_module = require("Application/application");

export class LocationManager {

    //public regions: LocationRegion[];

    private _locationManager: any;
    private _locationListener: android.location.LocationListener;

    public isLocationEnabled(): boolean {
        // TODO add proper implementation
        return true;
    }

    constructor() {
        //this.regions = [];
        this.desiredAccuracy = types_module.DesiredAccuracy.ANY;
        this._locationManager = app_module.tk.ui.Application.current.android.context.getSystemService('location');
        Log('location manager: ' + this._locationManager);

        this._locationListener = new android.location.LocationListener({
            onLocationChanged: function (location: android.location.Location) {
            },

            onProviderDisabled: function (provider: string) {
            },

            onProviderEnabled: function (provider: string) {
            },

            onStatusChanged: function(arg1: string, arg2: number, arg3: android.os.Bundle): void {
            }
        });
    }

    // in meters
    // we might need some predefined values here like 'any' and 'high'
    public desiredAccuracy: number;

    // listeners
    public locationChangeListener: types_module.LocationChangeListener;

    //              public regionChangeListener: RegionChangeListener;


    /*           // regions
                   public addRegion(region: LocationRegion) {
                       this.regions.push(region);
                   }

                   public removeRegion(region: LocationRegion) {

                   }

                   public clearRegions() {

                   }*/

    // monitoring

    public startLocationMonitoring() {
        var criteria = new android.location.Criteria();
        criteria.setAccuracy((this.desiredAccuracy === types_module.DesiredAccuracy.HIGH) ? 3 : 1);
        var providers = this._locationManager.getProviders(criteria, false);
        var it = providers.iterator();
        while (it.hasNext()) {
            var element = it.next();
            Log('found provider: ' + element);
            this._locationManager.requestLocationUpdates(element, 200, 10, this._locationListener);
        }
    }

    public stopLocationMonitoring() {
        this._locationManager.removeUpdates(this._locationListener);
    }

    // other

    public getLastKnownLocation(): types_module.LocationPoint {
        return null;
    }

    public distanceInMeters(loc1: types_module.LocationPoint, loc2: types_module.LocationPoint): number {
        return 0;
    }
}