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 Admin_OrderWizard_ReverseCancel : WebBlocks.AdministrativePage
{
    private int OrderID
    {
        get { return (ViewState["OrderID"] == null ? 0 : (int)ViewState["OrderID"]); }
        set { ViewState["OrderID"] = value; }
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            

            litError.Text = string.Empty;

            OrderID = Int32.Parse(Request["OrderID"]);

            lnkBackToOrder.NavigateUrl = "EditOrder.aspx?OrderID=" + OrderID.ToString();

            DataRow dr = Database.Orders_GetByOrderID(OrderID);
            txtComments.Text = (dr["AdminComments"] != null ? (string)dr["AdminComments"] : "");

            // grab all the items in this order and make sure we have enough inventory to fulfill this order again
            DataTable dtOrderItems = Database.OrderItems_GetByOrderID(OrderID);
            ArrayList pendingOrderItems = new ArrayList();
            foreach (DataRow drOrderItem in dtOrderItems.Rows)
            {
                pendingOrderItems.Add(Int32.Parse(drOrderItem["OrderItemID"].ToString()));
            }
            foreach (DataRow drOrderItem in dtOrderItems.Rows)
            {
                string SKU = drOrderItem["SKU"].ToString();

                // find the Item that cooresponds to this SKU (we should find one since SKU is unique)
                DataTable dtItems = Database.Items_Search("",SKU);
                if (dtItems.Rows.Count > 0 && pendingOrderItems.Contains(Int32.Parse(drOrderItem["OrderItemID"].ToString())))
                {
                    int quantity = 0;
                    String name = "";
                    int ItemID = Int32.Parse(dtItems.Rows[0]["ItemID"].ToString());
                    int SelectorID = Int32.Parse(dtItems.Rows[0]["SelectorID"].ToString());

                    // find all Order Items with this SKU and add orderID their quantities together
                    DataTable dtOrderItemsSKU = Database.OrderItems_Search("", SKU, OrderID);
                    foreach (DataRow dtOrderItemSKU in dtOrderItemsSKU.Rows)
                    {
                        // we should have found the current item and any other item that shares the same sku
                        quantity += Int32.Parse(dtOrderItemSKU["Quantity"].ToString());

                        // need to add this so we know which OrderItems don't have enough stock
                        pendingOrderItems.Remove(Int32.Parse(dtOrderItemSKU["OrderItemID"].ToString()));

                        name = dtOrderItemSKU["Name"].ToString();
                    }
                    if (Int32.Parse(dtItems.Rows[0]["Inventory"].ToString()) != -1 && Int32.Parse(dtItems.Rows[0]["Inventory"].ToString()) < quantity)
                    {
                        // quantity is more than inventory, let the admin know
                        litError.Text += "<br><a href='EditSelector_MemberItems.aspx?SelectorID=" + SelectorID.ToString() + "&ItemID=" + ItemID.ToString() + "'>" + name + " SKU [" + SKU + "]</a>: Available Inventory = " + Int32.Parse(dtItems.Rows[0]["Inventory"].ToString()) + ", Requested Quantity = " + quantity;
                    }
                }
            }

            if(litError.Text != string.Empty)
            {
                Button nextButton = (Button)wizDelay.FindControl("StepNavigationTemplateContainerID").FindControl("StepNextButton");
                nextButton.Visible = false;
                nextButton.Enabled = false;

                litError.Text = "There is not enough Inventory to fulfill this order.  Please check the items listed below.<br>" + litError.Text;
            }

            if (litError.Text == string.Empty) // disable wizard if we have errors.
                wizDelay.ActiveStepIndex = 0;
            else
                wizDelay.Visible = false;
        }
    }

    protected void wizDelay_FinishButtonClick(object sender, WizardNavigationEventArgs e)
    {
        Database.Orders_UpdateForProcessing(OrderID, txtComments.Text, null, 1, false, null);

        Response.Redirect("EditOrder.aspx?OrderID=" + OrderID.ToString());
    }

}