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+using System;
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+using System.Collections.Generic;
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+using System.Linq;
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+using System.Text;
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+using System.Threading.Tasks;
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+
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+namespace InABox.Avalonia
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+{
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+ public class GPSLocation
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+ {
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+ // public delegate void LocationEvent(GPSLocation sender);
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+ // public event LocationEvent? OnLocationFound;
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+
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+ // public delegate void LocationError(GPSLocation sender, Exception error);
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+ // public event LocationError? OnLocationError;
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+
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+ public TimeSpan ScanDelay { get; set; }
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+
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+ public double Latitude { get; private set; }
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+ public double Longitude { get; private set; }
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+ public String Address { get; private set; }
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+
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+ // private bool bLocating = false;
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+ public DateTime TimeStamp { get; private set; }
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+
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+ public GPSLocation() : base()
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+ {
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+ TimeStamp = DateTime.MinValue;
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+ ScanDelay = new TimeSpan(0, 0, 0);
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+ Address = "Searching for GPS";
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+ }
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+
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+ public bool RecentlyLocated
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+ {
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+ get
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+ {
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+ return (DateTime.Now.Subtract(TimeStamp).Ticks < ScanDelay.Ticks);
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+ }
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+ }
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+
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+ private double DistanceBetween(double sLatitude, double sLongitude, double eLatitude,
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+ double eLongitude)
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+ {
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+ var radiansOverDegrees = (Math.PI / 180.0);
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+
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+ var sLatitudeRadians = sLatitude * radiansOverDegrees;
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+ var sLongitudeRadians = sLongitude * radiansOverDegrees;
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+ var eLatitudeRadians = eLatitude * radiansOverDegrees;
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+ var eLongitudeRadians = eLongitude * radiansOverDegrees;
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+
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+ var dLongitude = eLongitudeRadians - sLongitudeRadians;
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+ var dLatitude = eLatitudeRadians - sLatitudeRadians;
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+
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+ var result1 = Math.Pow(Math.Sin(dLatitude / 2.0), 2.0) +
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+ Math.Cos(sLatitudeRadians) * Math.Cos(eLatitudeRadians) *
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+ Math.Pow(Math.Sin(dLongitude / 2.0), 2.0);
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+
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+ // Using 3956 as the number of miles around the earth
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+ var result2 = 3956.0 * 2.0 *
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+ Math.Atan2(Math.Sqrt(result1), Math.Sqrt(1.0 - result1));
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+
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+ return result2;
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+ }
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+
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+ // public void GetLocation(bool skiprecentlylocated = false)
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+ // {
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+ // if (bLocating || RecentlyLocated)
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+ // {
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+ // if (!skiprecentlylocated)
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+ // return;
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+ // }
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+
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+ // bLocating = true;
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+
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+ // // Don't reset this on every refresh, otherwise the final UI will randomly get "Searching for GPS" as the address
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+ // //Address = "Searching for GPS";
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+
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+ // bool bOK = MobileUtils.IsPermitted<Permissions.LocationWhenInUse>().Result;
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+ //
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+ // Task.Run(async () =>
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+ // {
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+
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+ // try
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+ // {
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+ //
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+ // if (!bOK)
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+ // {
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+ // Latitude = 0.0F;
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+ // Longitude = 0.0F;
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+ // TimeStamp = DateTime.MinValue;
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+ // Address = "GPS Services Disabled";
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+ // Device.BeginInvokeOnMainThread(() =>
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+ // {
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+ // OnLocationError?.Invoke(this, new Exception("Please enable GPS Services to continue"));
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+ // });
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+ // bOK = false;
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+ // bLocating = false;
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+ // }
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+ // else
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+ // {
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+
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+ // try
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+ // {
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+ // var request = new GeolocationRequest(GeolocationAccuracy.Best, new TimeSpan(0, 0, 20));
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+ // var location = await Geolocation.GetLocationAsync(request);
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+
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+ // if (location != null)
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+ // {
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+
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+ // //if (location.IsFromMockProvider)
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+ // //{
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+ // // Device.BeginInvokeOnMainThread(() =>
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+ // // {
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+ // // OnLocationError?.Invoke(this, new Exception("Mock GPS Location Detected!\nPlease correct and restart TimeBench."));
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+ // // });
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+ // //}
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+ // //else
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+ // {
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+
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+ // Latitude = location.Latitude;
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+ // Longitude = location.Longitude;
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+ // TimeStamp = DateTime.Now;
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+
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+
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+ // String sErr = "";
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+ // Placemark address = null;
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+ // try
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+ // {
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+ // var addresses = await Geocoding.GetPlacemarksAsync(Latitude, Longitude);
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+ // double maxdist = double.MaxValue;
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+ // foreach (var cur in addresses.Where(x => !String.IsNullOrEmpty(x.Thoroughfare)))
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+ // {
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+ // var delta = Location.CalculateDistance(location, cur.Location, DistanceUnits.Kilometers);
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+ // if (delta < maxdist)
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+ // {
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+ // address = cur;
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+ // maxdist = delta;
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+ // }
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+ // }
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+
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+ // }
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+ //
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+ // catch (Exception ee2)
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+ // {
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+ // sErr = ee2.Message;
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+ // //address = null;
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+ // }
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+ // if (address != null)
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+ // Address = String.Format("{0} {1} {2}", address.SubThoroughfare, address.Thoroughfare, address.Locality);
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+ // else
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+ // Address = String.Format("Lat: {0}, Lng: {1}", Latitude, Longitude);
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+
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+ // if (location.IsFromMockProvider)
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+ // Address = "** " + Address;
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+
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+ // if (!String.IsNullOrEmpty(sErr))
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+ // Address = String.Format("{0} (ERROR: {1})", Address, sErr);
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+
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+ // Device.BeginInvokeOnMainThread(() =>
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+ // {
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+ // OnLocationFound?.Invoke(this);
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+ // });
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+ // bLocating = false;
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+ // }
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+
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+ // }
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+ // else
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+ // {
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+ // Latitude = 0.00;
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+ // Longitude = 0.00;
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+ // TimeStamp = DateTime.MinValue;
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+ // bLocating = false;
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+ // Device.BeginInvokeOnMainThread(() =>
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+ // {
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+ // OnLocationError?.Invoke(this, new Exception("Unable to get GPS Location"));
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+ // });
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+
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+ // }
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+
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+ // }
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+ // catch (Exception e)
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+ // {
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+ // bLocating = false;
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+ // Device.BeginInvokeOnMainThread(() =>
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+ // {
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+ // OnLocationError?.Invoke(this, e);
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+ // });
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+ // }
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+ // }
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+ // }
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+ // catch (Exception e)
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+ // {
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+ //
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+ // }
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+
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+ // bLocating = false;
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+ // });
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+
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+
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+ // }
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+
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+ }
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+}
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