using System;
using System.Text.RegularExpressions;
using System.Web.UI;
using System.Web.UI.WebControls;
using ECOEarth.Web.Domain;

namespace ECOEarth.Web
{
    public partial class Basket : System.Web.UI.Page
    {
        private OrderBasket basket = null;

        protected OrderBasket OrderBasket
        {
            get { return basket; }
        }

        protected void Page_Load(object sender, EventArgs e)
        {
            basket = Session["OrderBasket"] as OrderBasket;
            TopDivHandler.Position = (TopDivHandler.Position == "0 0px") ? "0 -140px" : "0 -140px";
                        
        }

        protected void BindBasketRepeater()
        {
            BasketRepeater.DataSource = basket.OrderItems;
            BasketRepeater.DataBind();
        }

 
        public void RemoveItemButton_Click(object obj, ImageClickEventArgs e)
        {
            int orderItemIndex = Convert.ToInt32(((ImageButton) obj).CommandArgument);
            basket.OrderItems.RemoveAt(orderItemIndex);
        }

        public void UpdateQuantity_Click(object obj, EventArgs e)
        {
            int orderItemIndex = Convert.ToInt32(((Button)obj).CommandArgument);
            TextBox quantityTextbox = BasketRepeater.Items[orderItemIndex].FindControl("Quantity") as TextBox;
            OrderItem orderItem = OrderBasket.OrderItems[orderItemIndex];

            string quantityInput = quantityTextbox.Text.Trim();

            if(!Regex.IsMatch(quantityInput, @"^\d{1,5}$")) return; 
            
            int quantity = Convert.ToInt32(quantityInput);
            
            if (quantity > 0)
            {
                orderItem.ChangeQuantity(quantity);
            } else
            {
                basket.OrderItems.RemoveAt(orderItemIndex);
            }
        }

        protected override void OnPreRender(EventArgs e)
        {
            BindBasketRepeater();
            if (basket.OrderItems.Count == 0)
            {
                noItemsDiv.Visible = true;
                basketProductsDiv.Visible = false;
            } else
            {
                noItemsDiv.Visible = false;
                basketProductsDiv.Visible = true;
            }

            Session["OrderBasket"] = this.OrderBasket;
            base.OnPreRender(e);
        }


        #region Page Exposed Properties
        public string TotalPrice
        {
            get
            {
                return (OrderBasket.TotalProductPrice + OrderBasket.TotalShippingPrice + OrderBasket.TotalVATPrice).ToString("C");
            }
        }

        public string TotalProductPrice
        {
            get
            {
                return OrderBasket.TotalProductPrice.ToString("C");
            }
        }

        public string TotalShippingPrice
        {
            get
            {
                return OrderBasket.TotalShippingPrice.ToString("C");
            }
        }

        public string TotalVATPrice
        {
            get
            {
                return OrderBasket.TotalVATPrice.ToString("C");
            }
        }
        #endregion

        protected void NextButton_Click(object sender, EventArgs e)
        {
            Response.Redirect("Checkout.aspx");
        }

        protected void ShippingTo_Changed(object sender, EventArgs e)
        {
            OrderBasket.ChangeDestination((Destination)(Enum.Parse(typeof (Destination), ShippingTo.SelectedValue)));
        }

        protected override void OnPreRenderComplete(EventArgs e)
        {
            Session["OrderBasket"] = OrderBasket;
            base.OnPreRenderComplete(e);
        }
    }
}