using System;
using System.Device.Location;

using Microsoft.Devices.Sensors;
using Microsoft.Phone.Controls;
using Microsoft.Xna.Framework;

namespace map_5_
{
    public partial class MainPage : PhoneApplicationPage
    {
        private Accelerometer myAccel;

        private Vector3 currentValues;

        private GeoCoordinateWatcher myGeoWatcher;

        public MainPage()
        {
            InitializeComponent();

            myAccel = new Accelerometer();
            this.myAccel.CurrentValueChanged +=
                new EventHandler<SensorReadingEventArgs<AccelerometerReading>>(myAccel_CurrentValueChanged);
            myAccel.Start();
            currentValues = myAccel.CurrentValue.Acceleration;

            myGeoWatcher=new GeoCoordinateWatcher();
            this.myGeoWatcher.StatusChanged += new EventHandler<GeoPositionStatusChangedEventArgs>(myGeoWatcher_StatusChanged);
            myGeoWatcher.PositionChanged += new EventHandler<GeoPositionChangedEventArgs<GeoCoordinate>>(myGeoWatcher_PositionChanged);
            myGeoWatcher.TryStart(false, TimeSpan.FromSeconds(60));
        }

        void myGeoWatcher_StatusChanged(object sender, GeoPositionStatusChangedEventArgs e)
        {
            switch (e.Status)
            {
                case GeoPositionStatus.Disabled:
                    if (myGeoWatcher.Permission == GeoPositionPermission.Denied)
                    {
                        GeoStatus.Text = "Сервис выключен";
                    }
                    else
                    {
                        GeoStatus.Text = "На этом устройстве сервис недоступен";
                    }
                    break;
                case GeoPositionStatus.Initializing:
                    GeoStatus.Text = "Сервис инициализируется";
                    break;
                case GeoPositionStatus.NoData:
                    GeoStatus.Text = "Данные о месположении недоступны";
                    break;
                case GeoPositionStatus.Ready:
                    GeoStatus.Text = "Данные о местоположении доступны";
                    break;
            }

        }

        void myGeoWatcher_PositionChanged(object sender, GeoPositionChangedEventArgs<GeoCoordinate> e)
        {
            map1.Center = e.Position.Location;
        }

        void myAccel_CurrentValueChanged(object sender, SensorReadingEventArgs<AccelerometerReading> e)
        {
            if (myAccel.IsDataValid)
            {
                var deltaZ = (currentValues - e.SensorReading.Acceleration).Z;
                var Z = e.SensorReading.Acceleration.Z;
                currentValues = e.SensorReading.Acceleration;
                if (Z < 0 && deltaZ > 0)
                {
                    Dispatcher.BeginInvoke(this.HandleZoomIn);
                }
                if (Z > 0 && deltaZ < 0)
                {
                    Dispatcher.BeginInvoke(this.HandleZoomOut);
                }
            }
        }

        private void HandleZoomIn()
        {
            map1.ZoomLevel += 1;
        }

        private void HandleZoomOut()
        {
            map1.ZoomLevel -= 1;
        }

    }
}