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

    private decimal MaxAmount
    {
        get { return (decimal)ViewState["MaxAmount"]; }
        set { ViewState["MaxAmount"] = value; }
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            OrderID = Int32.Parse(Request["OrderID"]);

            DataRow dr = Database.Orders_GetByOrderID(OrderID);

            if (!(bool)dr["IsCaptured"] || (string)dr["PaymentMethod"] != "Credit Card")
                wizRefund.ActiveStepIndex = 1;

            if (dr["AdminComments"] != DBNull.Value)
                txtComments.Text = (string)dr["AdminComments"];

            // the maximum amount that can be refunded is the amount of the order minus 
            // any amount that has been refunded already.
            MaxAmount = (decimal)dr["Amount"] - (decimal)dr["RefundAmount"];
            txtRefundAmount.Text = String.Format("{0:f}", MaxAmount);
        }
    }

    protected void wizDelay_FinishButtonClick(object sender, WizardNavigationEventArgs e)
    {
        Database.Orders_UpdateForProcessing(OrderID, txtComments.Text, null, 5, null, null);

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

    protected void btnRefund_Click(object sender, EventArgs e)
    {
        decimal RefundAmount = Decimal.Parse(txtRefundAmount.Text);
        Gateways.GatewayBase gateway = Gateways.GatewayBase.GetGateway(Configuration.Get("Gateways.PaymentGateway"));
        if (!gateway.CreditFunds(OrderID, RefundAmount))
        {
            DataRow dr = Database.Orders_GetByOrderID(OrderID);

            litRefund.Text = "<div style='color: red'>Refunding failed for the following reason:<br>";
            litRefund.Text += (dr["LastResponseText"] == DBNull.Value ? "No Reason" : (string)dr["LastResponseText"]);
            litRefund.Text += "</div>";
        }
        else
        {
            Database.Orders_SetRefundAmount(OrderID, RefundAmount);

            litRefund.Text = "Refund successful.";
        }
    }
}