using System;
using System.Linq;
using System.Windows.Controls;
using System.Windows.Navigation;
using Juick.ViewModels;
using Microsoft.Phone.Controls;

namespace Juick
{
    public partial class ThreadView : PhoneApplicationPage
    {
        public ThreadView()
        {
            InitializeComponent();
            Model = new ThreadViewModel();
            DataContext = Model;
        }

        public ThreadViewModel Model;
        
        // When page is navigated to set data context to selected item in list
        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            if (Model.Items.Count > 0)
                return;
            string _mid = "";
            if (NavigationContext.QueryString.TryGetValue("mid", out _mid))
            {
                Model.Mid = int.Parse(_mid);
                Model.LoadData(null);
            }
        }

        private void ListBox_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            // If selected index is -1 (no selection) do nothing
            if (((ListBox)sender).SelectedIndex == -1)
                return;

            // Navigate to the new page
            var item = Model.Items[((ListBox) sender).SelectedIndex];
            var destUri = string.Format("/NewPostView.xaml?mid={0}", item.MID);
            if (item.RID > 0)
                destUri += string.Format("&rid={0}", item.RID);
            NavigationService.Navigate(new Uri(destUri , UriKind.Relative));

            // Reset selected index to -1 (no selection)
            ((ListBox)sender).SelectedIndex = -1;
        }
    }
}