using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;


public partial class Controls_Selectors_SingleItem : SelectorControl
{
    // variables to be displayed
    public string ProductName;
    public string Description;
    public string Price;

    private int ItemID
    {
        get { return (ViewState["ItemID"] == null ? 0 : (int)ViewState["ItemID"]); }
        set { ViewState["ItemID"] = value; }
    }

    private int MinimumQuantity
    {
        get { return (ViewState["MinimumQuantity"] == null ? 1 : (int)ViewState["MinimumQuantity"]); }
        set { ViewState["MinimumQuantity"] = value; }
    }

    private bool ignoreInventory
    {
        get { return Configuration.Get("IgnoreInventory") == "Yes" ? true : false; }
    }

    public override void BindData()
    {
        // bind image view
        ImageView1.SelectorID = SelectorData.SelectorID;
        ImageView1.BindData();

        // bind customizations
        ccCustomizations.SelectorID = SelectorData.SelectorID;
        ccCustomizations.BindData();

        // bind related products
        RelatedProducts1.SelectorID = SelectorData.SelectorID;
        RelatedProducts1.BindData();

        litProductName.Text = SelectorData.Name;
        if (SelectorData.SKU.Length > 0)
            litSKU.Text = SelectorData.SKU;

        ProductName = SelectorData.Name;
        Description = SelectorData.Description;

        DataTable dt = Database.Items_GetBySelectorIDForDetailPage(SelectorData.SelectorID);

        if (dt.Rows.Count == 1)
        {
            DataRow dr = dt.Rows[0];

            ItemID = (int)dr["ItemID"];
            Price = String.Format("{0:c}", (decimal)dr["Price"]);
            
            // bind volume pricing table, if there is one
            if (dr["VolumePricingTableID"] != DBNull.Value)
            {
                DataTable dtVol = Database.VolumePricingTableItem_GetByItemID(ItemID);

                if (dtVol.Rows.Count > 0)
                    MinimumQuantity = Math.Max(1, (int)dtVol.Rows[0]["Quantity"]);

                VolumePricing1.DataSource = dtVol;
                VolumePricing1.BindData();
                VolumePricing1.Visible = true;
            }
            else
            {
                litPrice.Text = Price;
                VolumePricing1.Visible = false;
            }

            if (!ignoreInventory)
            {
                if ((int)dr["Inventory"] < -1 || (int)dr["Inventory"] == 0)
                {
                    btnBuy.Visible = false;
                    litOutOfStock.Text = "Out of Stock";
                }
            }

            txtQuantity.Text = MinimumQuantity.ToString();
        }
        else
            throw new Exception("Product page not set up correctly - 'SingleItem' pages may only have a single member item.");
    }

    protected void btnBuy_Click(object sender, ImageClickEventArgs e)
    {
        int Quantity = Int32.Parse(txtQuantity.Text);
        int Max = Int32.Parse(Database.Items_Get(ItemID)["Inventory"].ToString());

        // we need to check items in the cart with this ItemID
        foreach(ShoppingCartItem sci2 in ShoppingCart)
        {
            if(sci2.ItemID == ItemID && Max != -1)
                Max -= sci2.Quantity;
        }

        if (ignoreInventory)
        {
            string CustomizationText = ccCustomizations.GetCustomizationText();
            decimal CustomizationCost = ccCustomizations.GetCustomizationCost();

            AddItemToCart(ItemID, Quantity, CustomizationText, CustomizationCost);
            Response.Redirect("~/Cart.aspx");
        }
        else
        {
            if (Max == 0)
            {
                Page.ClientScript.RegisterStartupScript(typeof(string), "error", "alert('You have already added all available units to your cart.');", true);
            }
            else if (Quantity > Max && Max != -1)
            {
                Page.ClientScript.RegisterStartupScript(typeof(string), "error", "alert('You can only add " + Max.ToString() + " unit(s) to your cart.  Please decrease your quantity this amount or less.');", true);
            }
            else if (Quantity >= MinimumQuantity)
            {
                string CustomizationText = ccCustomizations.GetCustomizationText();
                decimal CustomizationCost = ccCustomizations.GetCustomizationCost();

                AddItemToCart(ItemID, Quantity, CustomizationText, CustomizationCost);
                Response.Redirect("~/Cart.aspx");
            }
            else
            {
                Page.ClientScript.RegisterStartupScript(typeof(string), "error", "alert('The minimum order for this item is " + MinimumQuantity.ToString() + " unit(s).  Please increase your quantity to at least this amount.');", true);
            }
        }
    }
}