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

namespace comal.timesheets
{
    public partial class Purchases 
    {
        private Employee _employee = null;

        public Purchases(Employee employee)
        {
            _employee = employee;
            InitializeComponent();

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

        protected override async void OnAppearing()
        {
            base.OnAppearing();
            await LoadData();
        }

        private async Task LoadData()
        {
            Device.BeginInvokeOnMainThread(() => NewPurch.IsVisible = false);


            using (await MaterialDialog.Instance.LoadingDialogAsync(message: "Loading Data"))
            {
                CoreTable orders = new Client<PurchaseOrder>().Query(
                    new Filter<PurchaseOrder>(x => x.IssuedBy.ID).IsEqualTo(_employee.ID).And(X => X.ClosedDate).IsEqualTo(DateTime.MinValue),
                    new Columns<PurchaseOrder>(X => X.ID, X => X.PONumber, X => X.SupplierLink.Name, X => X.ExTax, X => X.IssuedDate),
                    new SortOrder<PurchaseOrder>(x => x.PONumber)
                );


                Device.BeginInvokeOnMainThread(() =>
                {
                    foreach (var row in orders.Rows)
                    {
                        PurchaseOrder order = row.ToObject<PurchaseOrder>();
                        PurchaseCard card = new PurchaseCard(order);
                        Cards.Children.Add(card);
                    }
                    NewPurch.IsVisible = true;
                });
            }
        }

        void NewPurchase_Clicked(System.Object sender, System.EventArgs e)
        {
            NewPurch.IsVisible = false;
            NewPurchase purchase = new NewPurchase();
            Navigation.PushAsync(purchase);
        }
    }

}