using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Comal.Classes;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;

namespace PRS.Mobile
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class StoreRequiItem : ContentView
    {
        public delegate void ZeroSelected(int _ID);

        public delegate void ParseError();

        public event ParseError OnParseError;

        public event ZeroSelected OnZeroSelected;
        public Guid ProductID { get; set; }
        public string ProductCode { get; set; }
        public string ProductName { get; set; }
        public string LocationName { get; set; }
        public double Quantity { get; set; }
        public int ID { get; set; }
        public Guid RequiItemID { get; set; }
        public Guid HoldingID { get; set; }

        public bool Packs { get; set; }
        public StoreRequiItem(ProductShell _product, double qty, string itemLocation, Guid _holdingID)
        {
            InitializeComponent();
            Quantity = qty;
            HoldingID = _holdingID;
            RequiItemID = Guid.Empty;
            LocationName = itemLocation;
            UpdateRow(_product);
        }

        private void UpdateRow(ProductShell _product)
        {
            ProductID = _product.ID;
            ProductCode = _product.Code;
            ProductName = _product.Name;
            locationLbl.Text = LocationName;
            productLbl.Text = ProductName + " (" + ProductCode + ")";
            qtyLbl.Text = Quantity.ToString();
        }

        public void UpdateShelf()
        {
            
        }

        #region Buttons
        private void ReduceQtyBtn_Clicked(object sender, EventArgs e)
        {
            if (Quantity <= 1)
            {
                OnZeroSelected?.Invoke(ID);
                return;
            }
            else
            {
                Quantity--;
                qtyLbl.Text = Quantity.ToString();
            }
        }

        private void IncreaseQtyBtn_Clicked(object sender, EventArgs e)
        {
            Quantity++;
            qtyLbl.Text = Quantity.ToString();
        }

        private void qtyEntry_Changed(object sender, EventArgs e)
        {
            try
            {
                double i = Convert.ToDouble(qtyLbl.Text);
                if (i > 0.0)
                {
                    Quantity = i;
                }
                else
                {
                    qtyLbl.Text = "1";
                    Quantity = 1;
                }
            }
            catch
            {
                if (string.IsNullOrWhiteSpace(qtyLbl.Text))
                { }
                else
                OnParseError?.Invoke();
            }


        }

        #endregion

        private StoreRequiItem()
        {
         
        }
    }
}