using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using Xamarin.Forms;
using XF.Material.Forms.UI;
using XF.Material.Forms.UI.Dialogs;

namespace comal.timesheets
{
    public partial class FrameDetailsPage : ContentPage
    {


        ScannerPage scanner = null;

        DeliveryItem _item = null;

        public FrameDetailsPage(String code)
        {
            InitializeComponent();

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

            LoadData(code);
        }



        protected override async void OnAppearing()
        {
            base.OnAppearing();

            //if (scanner != null)
            //{
            //    await LoadData(scanner.Result);
            //    scanner = null;
            //}

        }

        Dictionary<Button, Guid> pdfs = new Dictionary<Button, Guid>();

        private async Task LoadData(String code)
        {
            await Task.Run(() =>
            {
                DeliveryItem item = null;

                CoreTable items = new Client<DeliveryItem>().Query(
                    new Filter<DeliveryItem>(x => x.Barcode).IsEqualTo(code)
                );

                if (items.Rows.Any())
                {
                    item = items.Rows.FirstOrDefault().ToObject<DeliveryItem>();

                    CoreTable docs = new Client<SetoutDocument>().Query(
                        new Filter<SetoutDocument>(x => x.EntityLink.ID).IsEqualTo(item.ManufacturingPacketLink.SetoutLink.ID).And(x => x.Superceded).IsEqualTo(DateTime.MinValue)
                    );

                    foreach (var row in docs.Rows)
                    {
                        MaterialButton button = new MaterialButton();
                        button.Text = row.Get<SetoutDocument, String>(x => x.DocumentLink.FileName);
                        button.Padding = new Thickness(0, 10, 0, 10);
                        button.ButtonType = MaterialButtonType.Elevated;
                        button.Clicked += ViewPDF;
                        pdfs[button] = row.Get<SetoutDocument, Guid>(x => x.DocumentLink.ID);

                    }

                }
                else
                    item = new DeliveryItem();

                Device.BeginInvokeOnMainThread(() =>
                {
                    if (item != null)
                        this.BindingContext = item;
                    this.documents.Children.Clear();
                    foreach (var button in pdfs.Keys)
                        this.documents.Children.Add(button);
                });
            });



        }


        private void ViewPDF(object sender, EventArgs e)
        {
            MaterialButton button = sender as MaterialButton;
            if (pdfs.ContainsKey(button))
            {
                var page = new FrameDocumentPage(pdfs[button], button.Text);
                Navigation.PushAsync(page);
            }
        }

        void ScanBarcode_Clicked(System.Object sender, System.EventArgs e)
        {
            scanner = new ScannerPage();
            Navigation.PushAsync(scanner);
        }
    }
}