prs/prs.mobile/comal.timesheets/Main/App.xaml.cs

using System;
using System.Threading.Tasks;
using Comal.Classes;
using InABox.Clients;
using InABox.Configuration;
using InABox.Core;
using InABox.Mobile;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
using XF.Material.Forms;
using XF.Material.Forms.Resources;
using XF.Material.Forms.Resources.Typography;
using XF.Material.Forms.UI;
using Xamarin.Essentials;
using SkiaSharp;

//[assembly: XamlCompilation(XamlCompilationOptions.Compile)]
namespace comal.timesheets
{
    public partial class App : Application
    {
        string deviceString = "";
        public static bool IsUserLoggedIn => ClientFactory.UserGuid != Guid.Empty;
        public static void LogoutUser()
        {
            ClientFactory.InvalidateUser();
        }

        public static LocationServices GPS { get; } = new LocationServices() { ScanDelay = new TimeSpan(0, 1, 0) };

        public static Bluetooth Bluetooth { get; } = new Bluetooth() { ScanDelay = new TimeSpan(0, 1, 0) };

        public static DataModel Data { get; } = new DataModel();

        public static bool IsInForeground { get; set; } = false;

        public const string MessageOnStart = "OnStart";
        public const string MessageOnSleep = "OnSleep";
        public const string MessageOnResume = "OnResume";

        public static ConnectionSettings Settings = null;

        public App()
        {
            try
            {
                Material.Init(this);
                InitializeComponent();
                Material.Use("Material.Configuration");

                MobileUtils.Init();
                CoreUtils.RegisterClasses();
                ComalUtils.RegisterClasses();

                FindDeviceInfo();

                Settings = new LocalConfiguration<ConnectionSettings>().Load();

                if (String.IsNullOrWhiteSpace(Settings.URL) || Settings.URL == "http://demo.prsdigital.com.au")
                {
                    TryLoadFromSecureCache();
                    if (String.IsNullOrWhiteSpace(Settings.URL))
                        MobileUtils.LoadDemoSettings(Settings);
                }
                else
                    MobileUtils.SaveToSecureStorage();

                if (!string.IsNullOrWhiteSpace(GlobalVariables.LoadFromLinkString))
                {                   
                    MobileUtils.LoadFromLink();
                }

                ClientFactory.SetClientType(typeof(JsonClient<>), "TimeBench", MobileUtils.AppVersion.InstalledVersionNumber + deviceString, new object[] { Settings.URL, Settings.Port, true });

                GlobalVariables.InternalOnAppearing = true;
                GlobalVariables.ChangeUser = false;

                GPS.GetLocation();

                Bluetooth.ScanForDevices();

                Device.StartTimer(new TimeSpan(0, 0, 30), () =>
                {
                    if (App.IsInForeground)
                    {
                        GPS.GetLocation();
                    }
                    return true;
                });

                Device.StartTimer(new TimeSpan(0, 0, 30), () =>
                {
                    if (App.IsInForeground)
                    {
                        Bluetooth.ScanForDevices();
                    }
                    return true;
                });

                MainPage = new MaterialNavigationPage(new comal.timesheets.PINLoginPage());
            }
            catch 
            {
                MainPage = new MaterialNavigationPage(new comal.timesheets.PINLoginPage());
            }
        }        

        private async void TryLoadFromSecureCache()
        {
            try
            {
                Settings.URL = await SecureStorage.GetAsync(GlobalVariables.CacheURLString);
                Settings.Port = int.Parse(await SecureStorage.GetAsync(GlobalVariables.CachePortString));
                Settings.UserID = await SecureStorage.GetAsync(GlobalVariables.CacheUserIDString);
                Settings.Password = await SecureStorage.GetAsync(GlobalVariables.CachePasswordString);
            }
            catch { }
        }

        private void FindDeviceInfo()
        {
            var idiom = DeviceInfo.Idiom;
            if (Device.RuntimePlatform.Equals(Device.iOS))
            {
                if (idiom.Equals(DeviceIdiom.Phone))
                {
                    deviceString = "i";
                }
                else if (idiom.Equals(DeviceIdiom.Tablet))
                {
                    deviceString = "I";
                }
            }
            else if (Device.RuntimePlatform.Equals(Device.Android))
            {
                if (idiom.Equals(DeviceIdiom.Phone))
                {
                    deviceString = "a";
                }
                else if (idiom.Equals(DeviceIdiom.Tablet))
                {
                    deviceString = "A";
                }
            }
            GlobalVariables.DeviceString = deviceString;
        }

        protected override void OnStart()
        {
            MessagingCenter.Send<App>(this, MessageOnStart);
            IsInForeground = true;

        }

        protected override void OnSleep()
        {
            MessagingCenter.Send<App>(this, MessageOnSleep);
            IsInForeground = false;
        }

        protected override void OnResume()
        {
            MessagingCenter.Send<App>(this, MessageOnResume);
            IsInForeground = true;
        }
    }
}