using ScheduleSamples.Common;
using ScheduleSamples.Data;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
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;

// The Item Detail Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234232

namespace ScheduleSamples
{
    /// <summary>
    /// A page that displays details for a single item within a group.
    /// </summary>
    public sealed partial class ItemDetailPage : ScheduleSamples.Common.LayoutAwarePage
    {
        //private NavigationHelper navigationHelper;
        //private ObservableDictionary defaultViewModel = new ObservableDictionary();

        ///// <summary>
        ///// NavigationHelper is used on each page to aid in navigation and 
        ///// process lifetime management
        ///// </summary>
        //public NavigationHelper NavigationHelper
        //{
        //    get { return this.navigationHelper; }
        //}

        ///// <summary>
        ///// This can be changed to a strongly typed view model.
        ///// </summary>
        //public ObservableDictionary DefaultViewModel
        //{
        //    get { return this.defaultViewModel; }
        //}

        public ItemDetailPage()
        {
            this.InitializeComponent();
            this.flipView.ItemsSource = SampleDataSource.GetItems("AllItems");
            //this.navigationHelper = new NavigationHelper(this);
            //this.navigationHelper.LoadState += navigationHelper_LoadState;
        }

        ///// <summary>
        ///// Populates the page with content passed during navigation.  Any saved state is also
        ///// provided when recreating a page from a prior session.
        ///// </summary>
        ///// <param name="sender">
        ///// The source of the event; typically <see cref="NavigationHelper"/>
        ///// </param>
        ///// <param name="e">Event data that provides both the navigation parameter passed to
        ///// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested and
        ///// a dictionary of state preserved by this page during an earlier
        ///// session.  The state will be null the first time a page is visited.</param>
        //private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)
        //{
        //    // TODO: Create an appropriate data model for your problem domain to replace the sample data
        //    var item = SampleDataSource.GetItem((String)e.NavigationParameter);
        //    this.DefaultViewModel["Item"] = item;
        //    contentFrame.Navigate(item.PageType);
        //}

        /// <summary>
        /// Populates the page with content passed during navigation.  Any saved state is also
        /// provided when recreating a page from a prior session.
        /// </summary>
        /// <param name="navigationParameter">The parameter value passed to
        /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested.
        /// </param>
        /// <param name="pageState">A dictionary of state preserved by this page during an earlier
        /// session.  This will be null the first time a page is visited.</param>
        protected override void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)
        {
            // Allow saved page state to override the initial item to display
            if (pageState != null && pageState.ContainsKey("SelectedItem"))
            {
                navigationParameter = pageState["SelectedItem"];
            }
            var item = SampleDataSource.GetItem((String)navigationParameter);
            this.flipView.SelectedItem = item;
            this.pageLogoAndTitle.Visibility = Visibility.Visible;
            //this.phonePageTitle.SelectedItem = item;
            if (Windows.Foundation.Metadata.ApiInformation.IsTypePresent("Windows.Phone.UI.Input.HardwareButtons"))
            {
                this.pageLogoAndTitle.Visibility = Visibility.Collapsed;
            }
        }

        /// <summary>
        /// Preserves state associated with this page in case the application is suspended or the
        /// page is discarded from the navigation cache.  Values must conform to the serialization
        /// requirements of <see cref="SuspensionManager.SessionState"/>.
        /// </summary>
        /// <param name="pageState">An empty dictionary to be populated with serializable state.</param>
        protected override void SaveState(Dictionary<String, Object> pageState)
        {
            var selectedItem = (SampleDataItem)this.flipView.SelectedItem;
            pageState["SelectedItem"] = selectedItem.UniqueId;
        }

        void flipView_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (this.flipView.SelectedItem != null)
            {
                // keep frame content in sync with the selected item
                bool result = frame.Navigate(((SampleDataItem)this.flipView.SelectedItem).PageType);
            }
        }

        #region NavigationHelper registration

        /// The methods provided in this section are simply used to allow
        /// NavigationHelper to respond to the page's navigation methods.
        /// 
        /// Page specific logic should be placed in event handlers for the  
        /// <see cref="GridCS.Common.NavigationHelper.LoadState"/>
        /// and <see cref="GridCS.Common.NavigationHelper.SaveState"/>.
        /// The navigation parameter is available in the LoadState method 
        /// in addition to page state preserved during an earlier session.


        //protected override void OnNavigatedTo(NavigationEventArgs e)
        //{
        //    navigationHelper.OnNavigatedTo(e);
        //}

        //protected override void OnNavigatedFrom(NavigationEventArgs e)
        //{
        //    navigationHelper.OnNavigatedFrom(e);
        //}

        #endregion
    }
}