using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using InABox.Clients;
using InABox.Core;
using Xamarin.Forms;

namespace comal.timesheets
{
    public partial class FrameDocumentPage 
    {
        private Guid _documentid = Guid.Empty;

        public FrameDocumentPage(Guid documentid, String filename)
        {
            InitializeComponent();

            NavigationPage.SetHasBackButton(this, false);
            ToolbarItems.Clear();
            ToolbarItems.Add(new ToolbarItem("Back", "", () =>
            {
                Navigation.PopAsync();
            }));

            Title = filename;

            pdf.Toolbar.Enabled = false;

            _documentid = documentid;

            new Client<Document>().Query(
                new Filter<Document>(x => x.ID).IsEqualTo(_documentid),
                null,
                null,
                (docs, error) =>
                {
                    LoadDocument(docs);
                }
            );

        }

        private void LoadDocument(CoreTable docs)
        {
            if (docs.Rows.Any())
            {
                byte[] data = docs.Rows.First().Get<Document, byte[]>(x => x.Data);
                MemoryStream ms = new MemoryStream(data);
                Device.BeginInvokeOnMainThread(() =>
                {
                    this.pdf.LoadDocument(ms);
                });

            }
        }
    }
}