using SmartCharging.Common;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.ApplicationModel.Activation;
using Windows.ApplicationModel.Core;
using Windows.ApplicationModel.Resources;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.Storage;
using Windows.Storage.Pickers;
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.Media.Imaging;
using Windows.UI.Xaml.Navigation;

// The User Control item template is documented at http://go.microsoft.com/fwlink/?LinkId=234236

namespace SmartCharging
{
    public sealed partial class MultipleImagePicker : UserControl
    {
        FileOpenPicker filePicker;
        CoreApplicationView view;
        public ObservableCollection<StorageFile> images;
        ErrorHandler errorHandler;
        ResourceLoader resourceLoader;


        public MultipleImagePicker()
        {
            this.InitializeComponent();
            this.images = new ObservableCollection<StorageFile>();
            errorHandler = new ErrorHandler();
           
            this.PreviewList.ItemsSource = images;
            filePicker = new FileOpenPicker();
            filePicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
            filePicker.ViewMode = PickerViewMode.Thumbnail;

            // Filter to include a sample subset of file types
            filePicker.FileTypeFilter.Clear();
            filePicker.FileTypeFilter.Add(".bmp");
            filePicker.FileTypeFilter.Add(".png");
            filePicker.FileTypeFilter.Add(".jpeg");
            filePicker.FileTypeFilter.Add(".jpg");
        }



        async void view_Activated(CoreApplicationView sender, Windows.ApplicationModel.Activation.IActivatedEventArgs args1)
        {
            FileOpenPickerContinuationEventArgs args = args1 as FileOpenPickerContinuationEventArgs;

            if (args != null)
            {
                if (args.Files.Count == 0) return;

                view.Activated -= view_Activated;
                StorageFile storageFile = args.Files[0];
                /*using(var stream = await storageFile.OpenAsync(Windows.Storage.FileAccessMode.Read)){
                     // This is where the byteArray to be stored.
                     var bytes = new byte[stream.Size];

                     // This returns IAsyncOperationWithProgess, so you can add additional progress handling
                     await stream.ReadAsync(bytes.AsBuffer(), (uint)stream.Size, Windows.Storage.Streams.InputStreamOptions.None);
                }

                var bitmapImage = new Windows.UI.Xaml.Media.Imaging.BitmapImage();
                await bitmapImage.SetSourceAsync(stream);

                var decoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(stream);*/

                images.Add(storageFile);
            }
        }
        private void AppBarButton_Tapped(object sender, TappedRoutedEventArgs e)
        {
            Control c = sender as Control;
            StorageFile dc = c.DataContext as StorageFile;

            images.Remove(dc);
        }

        private  async void AddImagesButton_Tapped(object sender, TappedRoutedEventArgs e)
        {
            this.resourceLoader = ResourceLoader.GetForCurrentView("Resources");
            if (this.images.Count >= 2)
            {
                await errorHandler.ShowError(this.resourceLoader.GetString("MaximumNumberOfPhotosMessage"));
            }
            else
            {
                view = CoreApplication.GetCurrentView();
                view.Activated += view_Activated;
                filePicker.PickSingleFileAndContinue();
            }

        }

        private void Image_Tapped(object sender, TappedRoutedEventArgs e)
        {
            FlyoutBase.ShowAttachedFlyout((FrameworkElement)sender);
        }

        private void Image_Flyout_Tapped(object sender, TappedRoutedEventArgs e)
        {
            this.ImagePreviewFlyout.Hide();
        }
    }
}