﻿using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Core;
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;
using HttpClientSample.Core.ViewModel;
using HttpClientSample.ViewModel;

// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238

namespace HttpClientSample
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class PersonDetailPage : Page
    {
        private PersonDetailViewModel _viewModel;

        public PersonDetailPage()
        {
            this.InitializeComponent();
            _viewModel = (PersonDetailViewModel) DataContext;
        }

        protected override async void OnNavigatedTo(NavigationEventArgs e)
        {
            base.OnNavigatedTo(e);

            if(e == null) throw new ArgumentException();
            var personId = ((int)(e?.Parameter ?? -1));

            await _viewModel.Init(personId);
        }

        private void PersonDetail_OnLoaded(object sender, RoutedEventArgs e)
        {
            SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = AppViewBackButtonVisibility.Visible;
            SystemNavigationManager.GetForCurrentView().BackRequested += OnBackRequested;
        }

        private void OnBackRequested(object sender, BackRequestedEventArgs backRequestedEventArgs)
        {
            if (Frame.CanGoBack)
            {
                Frame.GoBack();
                backRequestedEventArgs.Handled = true;
            }
        }
    }
}
