prs/prs.mobile/comal.timesheets/Modules/JobList/GPSInfoPage.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

using Xamarin.Forms;
using Xamarin.Forms.Maps;

using InABox.Core;
using Comal.Classes;
using XF.Material.Forms.UI.Dialogs;

namespace comal.timesheets
{
    public class GPSJobModel
    {
        public String JobNumber { get; set; }
        public String JobName { get; set; }
        public double Distance { get; set; }
    }



    public partial class GPSInfoPage : ContentPage
    {

        Location _here = null;
        CoreTable _jobs = null;

        public void GetLocation(double latitude, double longitude)
        {
            Task.Run(async () =>
            {
                String address = "";
                var coder = new Geocoder();

                var location = await coder.GetAddressesForPositionAsync(new Xamarin.Forms.Maps.Position(latitude, longitude));
                if (location.Any())
                    address = location.First();

                Device.BeginInvokeOnMainThread(() => { Location.Text = address; });
            });

        }

        public GPSInfoPage(CoreTable jobs)
        {
            _here = new Location() { Latitude = App.GPS.Latitude, Longitude = App.GPS.Longitude };
            _jobs = jobs;

            InitializeComponent();

            NavigationPage.SetHasBackButton(this, false);

            ToolbarItems.Clear();
            ToolbarItems.Add(new ToolbarItem("Back", "", () =>
            {
                Navigation.PopAsync();
            }));

            Title = "GPS Info";

            GetLocation(App.GPS.Latitude, App.GPS.Longitude);

            TimeStamp.Text = String.Format("{0:dd/MM/yy hh:mm:ss tt}", App.GPS.TimeStamp);

        }

        protected override async void OnAppearing()
        {
            base.OnAppearing();
            await LoadData();
        }

        private async Task LoadData()
        {
            using (await MaterialDialog.Instance.LoadingDialogAsync(message: "Loading Data"))
            {
                
                List<GPSJobModel> jobmodel = new List<GPSJobModel>();

                if (_jobs != null)
                {
                    foreach (CoreRow row in _jobs.Rows)
                    {
                        Location job = new Location()
                        {
                            Latitude = row.Get<Job, double>(x => x.SiteAddress.Location.Latitude),
                            Longitude = row.Get<Job, double>(x => x.SiteAddress.Location.Longitude),
                        };
                        if ((job.Latitude != 0.0F) && (job.Longitude != 0.0F))
                        {
                            jobmodel.Add(
                                new GPSJobModel()
                                {
                                    JobNumber = row.Get<Job, String>(x => x.JobNumber),
                                    JobName = row.Get<Job, String>(x => x.Name),
                                    Distance = _here.DistanceTo(job, UnitOfLength.Kilometers),
                                }
                            );
                        }
                    }
                }
                Device.BeginInvokeOnMainThread(
                    () =>
                    {
                        JobList.ItemsSource = null;
                        JobList.ItemsSource = jobmodel;
                    }
                );
            }
        }
    }
}