using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Xamarin.Forms;
using Xamarin.Forms.Xaml;
//using static Android.Graphics.ImageDecoder;

namespace comal.timesheets
{
    public delegate void SaveSelected(byte[] array);

	[XamlCompilation(XamlCompilationOptions.Compile)]
	public partial class ImageViewerEditor 
	{
        public event DeleteSelected OnDeleteSelected;
        public event SaveSelected OnSaveSelected;
        public ImageViewerEditor(ImageSource source, bool candelete = false)
        {
			InitializeComponent ();
            NavigationPage.SetHasBackButton(this, false);
            imageEditor.Source = source;
            imageEditor.ImageSaving += ImageEditor_ImageSaving;            
            imageEditor.ToolbarSettings.VisibleShapesItems = Syncfusion.SfImageEditor.XForms.ImageEditorShapes.Rectangle
                | Syncfusion.SfImageEditor.XForms.ImageEditorShapes.Circle
                | Syncfusion.SfImageEditor.XForms.ImageEditorShapes.Line
                | Syncfusion.SfImageEditor.XForms.ImageEditorShapes.Arrow;
            if (candelete)
            {
                deleteBtn.IsVisible = true;
            }
            if ((Device.Idiom == TargetIdiom.Phone) && (Device.RuntimePlatform == Device.Android))
            {
                blankLbl.IsVisible = true;
            }
        }

        private void ExitBtn_Clicked(object sender, EventArgs e)
        {
            Navigation.PopAsync();
        }

        private void ImageEditor_ImageSaving(object sender, Syncfusion.SfImageEditor.XForms.ImageSavingEventArgs args)
        {
                var stream = args.Stream;
                MemoryStream memoryStream = new MemoryStream();
                stream.CopyTo(memoryStream);
                byte[] array = memoryStream.ToArray();
                OnSaveSelected?.Invoke(array);
                args.Cancel = true;
                Navigation.PopAsync();
        }

        private void DeleteBtn_Clicked(object sender, EventArgs e)
        {
            OnDeleteSelected?.Invoke();
            Navigation.PopAsync();
        }
    }
}