using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.ApplicationModel;
using Windows.ApplicationModel.Activation;
using Windows.ApplicationModel.Core;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.Globalization;
using Windows.Storage;
using Windows.UI;
using Windows.UI.Core;
using Windows.UI.ViewManagement;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

namespace FoxTube
{
    /// <summary>
    /// Provides application-specific behavior to supplement the default Application class.
    /// </summary>
    sealed partial class App : Application
    {
        /// <summary>
        /// Initializes the singleton application object.  This is the first line of authored code
        /// executed, and as such is the logical equivalent of main() or WinMain().
        /// </summary>
        ApplicationDataContainer settings = ApplicationData.Current.LocalSettings;
        public App()
        {
            try
            {
                switch((int)settings.Values["themeMode"])
                {
                    case 0:
                        RequestedTheme = ApplicationTheme.Light;
                        break;
                    case 1:
                        RequestedTheme = ApplicationTheme.Dark;
                        break;
                }
            } catch { }
            try
            {
                if (settings.Values["language"] == null)
                {
                    List<string> cultures = new List<string>() { "ua", "ru", "by", "kz", "kg", "md", "lv", "ee" };
                    if (cultures.Contains(CultureInfo.InstalledUICulture.ThreeLetterISOLanguageName))
                        settings.Values.Add("language", "ru-RU");
                    else
                        settings.Values.Add("language", "en-US");
                }
                ApplicationLanguages.PrimaryLanguageOverride = (string)settings.Values["language"];
            }
            catch { }
            this.InitializeComponent();
            this.Suspending += OnSuspending;
        }

        /// <summary>
        /// Invoked when the application is launched normally by the end user.  Other entry points
        /// will be used such as when the application is launched to open a specific file.
        /// </summary>
        /// <param name="e">Details about the launch request and process.</param>
        protected override void OnLaunched(LaunchActivatedEventArgs e)
        {
            Frame rootFrame = Window.Current.Content as Frame;

            // Do not repeat app initialization when the Window already has content,
            // just ensure that the window is active
            if (rootFrame == null)
            {
                // Create a Frame to act as the navigation context and navigate to the first page
                rootFrame = new Frame();

                rootFrame.NavigationFailed += OnNavigationFailed;

                if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
                {
                    //TODO: Load state from previously suspended application
                }

                // Place the frame in the current Window
                Window.Current.Content = rootFrame;
            }

            if (e.PrelaunchActivated == false)
            {
                if (rootFrame.Content == null)
                {
                    // When the navigation stack isn't restored navigate to the first page,
                    // configuring the new page by passing required information as a navigation
                    // parameter
                    rootFrame.Navigate(typeof(MainPage), e.Arguments);
                }
                // Ensure the current window is active
                Window.Current.Activate();
            }

            CoreApplication.GetCurrentView().TitleBar.ExtendViewIntoTitleBar = true;
        }

        protected override void OnActivated(IActivatedEventArgs e)
        {
            base.OnActivated(e);

            if (e is ToastNotificationActivatedEventArgs)
            {
                string[] args = (e as ToastNotificationActivatedEventArgs).Argument.Split('|');
                switch (args[0])
                {
                    case "changelog":
                    case "inbox":
                        Methods.MainPage.GoToDeveloper(args[1]);
                        break;

                        //TODO: The rest
                }
            }

            CoreApplication.GetCurrentView().TitleBar.ExtendViewIntoTitleBar = true;
            Window.Current.Activate();
        }

        /// <summary>
        /// Invoked when Navigation to a certain page fails
        /// </summary>
        /// <param name="sender">The Frame which failed navigation</param>
        /// <param name="e">Details about the navigation failure</param>
        void OnNavigationFailed(object sender, NavigationFailedEventArgs e)
        {
            throw new Exception("Failed to load Page " + e.SourcePageType.FullName);
        }

        /// <summary>
        /// Invoked when application execution is being suspended.  Application state is saved
        /// without knowing whether the application will be terminated or resumed with the contents
        /// of memory still intact.
        /// </summary>
        /// <param name="sender">The source of the suspend request.</param>
        /// <param name="e">Details about the suspend request.</param>
        private void OnSuspending(object sender, SuspendingEventArgs e)
        {
            var deferral = e.SuspendingOperation.GetDeferral();
            //TODO: Save application state and stop any background activity
            deferral.Complete();
        }
    }
}