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 PreCheckout : WebBlockPage
{
    private OrderInfo OrderInfo
    {
        get
        {
            if (Session["OrderInfo"] == null)
                Session["OrderInfo"] = new OrderInfo();
            return (OrderInfo)Session["OrderInfo"];
        }
    }
    
    protected override void OnInit(EventArgs e)
    {
        if (ShoppingCart.GrandTotal == 0)
            Response.Redirect("Cart.aspx");

        SecurePage = true;
        SingleLineLogin1.SuccessfulLogin += new EventHandler(Login1_SuccessfulLogin);
        base.OnInit(e);
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            
            Session["ShippingAddressID"] = null;

            Utilities.PopulateStateList(ddlShipState);
            Utilities.PopulateCountryList(ddlShipCountry);
            ddlShipCountry.SelectedValue = "USA";

            if (CustomerInfo != null)
            {
                LoadCustomerData();
            }
        }
    }

    private void LoadCustomerData()
    {
        // LOAD Shipping
        ddlUseExistingShipping.Items.Clear();

        DataTable dt = Database.Addresses_GetByCustomerID(CustomerInfo.CustomerID, false);

        if (dt.Rows.Count > 0)
        {
            ddlUseExistingShipping.Items.Add(new ListItem("Use a New Shipping Address", ""));

            foreach(DataRow dr in dt.Rows)
            {
                string AddressSnippet = (string)dr["Address"] + ", " + (string)dr["City"] + ", " + (string)dr["State"] + ", " + (string)dr["ZipCode"];
                AddressSnippet = AddressSnippet.Substring(0, Math.Min(40, AddressSnippet.Length)) + "...";
                ddlUseExistingShipping.Items.Add(new ListItem(AddressSnippet, dr["AddressID"].ToString()));
            }
        }

        txtEmailAddress.Text = CustomerInfo.EmailAddress;
        txtEmailAddress2.Text = CustomerInfo.EmailAddress;
        txtEmailAddress.Enabled = false;
        txtEmailAddress2.Enabled = false;

        // load in shipping data if its there
        if (OrderInfo != null && OrderInfo.ShippingAddressID > 0)
        {
            DataRow dr = Database.Addresses_GetByAddressID(OrderInfo.ShippingAddressID);

            txtShipFirstName.Text = (string)dr["FirstName"];
            txtShipLastName.Text = (string)dr["LastName"];
            txtShipAddress.Text = (string)dr["Address"];
            txtShipCity.Text = (string)dr["City"];
            ddlShipState.SelectedValue = (string)dr["State"];
            ddlShipCountry.SelectedValue = (string)dr["Country"];
            txtShipZipCode.Text = (string)dr["ZipCode"];
        }
        else
        {
            // pre-load if there is only one existing address
            if (ddlUseExistingShipping.Items.Count == 2)
            {
                ddlUseExistingShipping.Items[1].Selected = true;
                ddlUseExistingShipping_SelectedIndexChanged(null, null);
            }
        }
    }

    protected void ddlUseExistingShipping_SelectedIndexChanged(object sender, EventArgs e)
    {
        txtEmailAddress.Text = CustomerInfo.EmailAddress;
        txtEmailAddress2.Text = CustomerInfo.EmailAddress;

        if (ddlUseExistingShipping.SelectedValue == "")
        {
            txtShipFirstName.Text = "";
            txtShipLastName.Text = "";
            txtShipAddress.Text = "";
            txtShipCity.Text = "";
            ddlShipState.SelectedValue = "";
            ddlShipCountry.SelectedValue = "USA";
            txtShipZipCode.Text = "";

            txtShipFirstName.Enabled = true;
            txtShipLastName.Enabled = true;
            txtShipAddress.Enabled = true;
            txtShipCity.Enabled = true;
            ddlShipState.Enabled = true;
            ddlShipCountry.Enabled = true;
            txtShipZipCode.Enabled = true;
            txtEmailAddress.Enabled = false;
            txtEmailAddress2.Enabled = false;
        }
        else
        {
            DataRow dr = Database.Addresses_GetByAddressID(Int32.Parse(ddlUseExistingShipping.SelectedValue));

            txtShipFirstName.Text = (string)dr["FirstName"];
            txtShipLastName.Text = (string)dr["LastName"];
            txtShipAddress.Text = (string)dr["Address"];
            txtShipCity.Text = (string)dr["City"];
            ddlShipState.SelectedValue = (string)dr["State"];
            ddlShipCountry.SelectedValue = (string)dr["Country"];
            txtShipZipCode.Text = (string)dr["ZipCode"];

            txtShipFirstName.Enabled = false;
            txtShipLastName.Enabled = false;
            txtShipAddress.Enabled = false;
            txtShipCity.Enabled = false;
            ddlShipState.Enabled = false;
            ddlShipCountry.Enabled = false;
            txtShipZipCode.Enabled = false;
            txtEmailAddress.Enabled = false;
            txtEmailAddress2.Enabled = false;
        }
    }

    void Login1_SuccessfulLogin(object sender, EventArgs e)
    {
        LoadCustomerData();
    }

    protected void btnSubmit_Click(object sender, ImageClickEventArgs e)
    {
        Page.Validate("valCheckout");
        if (Page.IsValid)
        {
            // ensure that a customer is active or has been made
            if (CustomerInfo == null)
            {
                CustomerInfo = new CustomerInfo();
                // if the user is creating an account, do that now
                if (txtPassword.Text.Length > 0 && txtPasswordConfirm.Text.Length > 0)
                {
                    // create a re-usable account
                    CustomerInfo.CustomerID = Database.Customers_Add(txtEmailAddress.Text,txtPassword.Text,false,true);
                    CustomerInfo.OneTimeCustomer = false;
                }
                else
                {
                    // create a one-time account
                    CustomerInfo.CustomerID = Database.Customers_Add(txtEmailAddress.Text, Utilities.GenerateRandomString(10), true, false);
                    CustomerInfo.OneTimeCustomer = true;                    
                }

                CustomerInfo.EmailAddress = txtEmailAddress.Text;
            }

            if (ddlUseExistingShipping.SelectedValue != "")
                OrderInfo.ShippingAddressID = Int32.Parse(ddlUseExistingShipping.SelectedValue);
            else if (OrderInfo.ShippingAddressID == 0)
            {
                // doesnt exist, go ahead and add it
                OrderInfo.ShippingAddressID = Database.Addresses_Add(CustomerInfo.CustomerID, false, txtShipFirstName.Text, txtShipLastName.Text, txtShipAddress.Text, txtShipCity.Text, ddlShipState.SelectedValue, ddlShipCountry.SelectedValue, txtShipZipCode.Text, "", txtEmailAddress.Text);
            }
            else
            {
                Database.Addresses_Update(OrderInfo.ShippingAddressID, CustomerInfo.CustomerID, false, txtShipFirstName.Text, txtShipLastName.Text, txtShipAddress.Text, txtShipCity.Text, ddlShipState.SelectedValue, ddlShipCountry.SelectedValue, txtShipZipCode.Text, "", txtEmailAddress.Text);
            }
            
            // also store the zipcode and state in the shopping cart
            ShoppingCart.ShippingState = ddlShipState.SelectedValue;
            ShoppingCart.Zipcode = txtShipZipCode.Text;
            
            // since we MAY have changed shipping info here, we need
            // to reset the shipping carrier options (they can be set on the next page)
            ShoppingCart.ShippingName = "";
            ShoppingCart.ShippingCost = 0;

            OrderInfo.Comments = txtComments.Text;

            // all set to go to the next page
            Response.Redirect("ShippingOptions.aspx");
        }
    }

    protected void custEmailAddress_ServerValidate(object source, ServerValidateEventArgs args)
    {
        if (txtPassword.Text.Length > 0)
        {
            DataRow dr = Database.Customers_GetNonOneTimeByEmailAddress(txtEmailAddress.Text, null);

            args.IsValid = (dr == null);
        }
        else
            args.IsValid = true;
    }

    protected void btnEnter_Click(object sender, EventArgs e)
    {
        SingleDiscount sd = ShoppingCart.MatchDiscount(txtDiscountCode.Text);

        if (sd != null)
        {
            if (ShoppingCart.DiscountList == null)
                ShoppingCart.DiscountList = new DiscountList();

            sd.RunDiscount();

            ShoppingCart.DiscountList.Add(sd);
            ShoppingCart.RunDiscountIfPresent();
            CartControl1.ForceRebind();

            txtDiscountCode.Text = "";

            if (!sd.DiscountApplied)
                Page.ClientScript.RegisterStartupScript(typeof(string), "err", "alert('Please check that you have met the minimum requirements of your discount code.');", true);
        }
        else
            Page.ClientScript.RegisterStartupScript(typeof(string), "nosuch", "alert('Invalid discount code.');", true);
    }
}