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;
using System.Text;
using System.Collections.Generic;
using System.Collections.Specialized;

public partial class Browse : WebBlockPage
{
    public int CategoryID
    {
        get { return (ViewState["CategoryID"] == null ? 0 : (int)ViewState["CategoryID"]); }
        set { ViewState["CategoryID"] = value; }
    }

    public string AttributeIDList
    {
        get { return (string)ViewState["AttributeIDList"]; }
        set { ViewState["AttributeIDList"] = value; }
    }

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

    #region callbacks
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            if (Request["CategoryID"] != null)
                CategoryID = Int32.Parse(Request["CategoryID"]);
            else if (Request.PathInfo.Length > 0)
            {
                if (Utilities.ValidateBrowseString.IsMatch(Request.PathInfo))
                {
                    // split into chunks
                    string[] PathInfoChunks = Request.PathInfo.Split('/');

                    // PathInfoChunks[1] should be our ID
                    CategoryID = Int32.Parse(PathInfoChunks[1]);

                    // PathInfoChunks[2] is the SEO name
                    // ignore it

                    // PathInfoChunks[3] and onward should be the attributes to apply
                    // we need to serialize these into a list
                    string AttList = "";
                    for(int i = 3; i < PathInfoChunks.Length; i++)
                        AttList += PathInfoChunks[i] + ",";

                    if (AttList.Length > 0)
                    {
                        AttributeIDList = AttList.TrimEnd(',');
                        AttributeIDCount = PathInfoChunks.Length - 3;
                    }
                }
                else
                    throw new Exception("Malformed path string.");
            }
            else
            {
                pnlAutoBrowse.Visible = false;
                tbCategoryLanding.Visible = true;
            }

            if (CategoryID > 0)
            {
                //ProductNav1.SelectedCategoryID = CategoryID;
                Breadcrumbs1.SelectedCategoryID = CategoryID;

                //FilterControl1.CategoryID = CategoryID;
                //FilterControl1.AttributeIDList = AttributeIDList;
                //FilterControl1.AttributeCount = AttributeIDCount;

                // replace the normal autogenerated browse section with a
                // category landing page if need be
                DataRow dr = Database.Categories_Get(CategoryID);

                if (dr != null)
                {
                    string CategoryName = (string)dr["CategoryName"];

                    // replace the contents with the landing data
                    if ((bool)dr["UseCategoryLanding"] && Request["Page"] == null)
                    {
                        tbCategoryLanding.BlockTitle = "Category Landing Page - " + CategoryName;
                        tbCategoryLanding.Visible = true;
                        pnlAutoBrowse.Visible = false;
                    }
                    else
                    {
                        // otherwise, set the page title and display the category contents
                        litTitle.Text = CategoryName;
                        wbTitle.BlockTitle = "Category Landing Page - " + CategoryName;
                        BindData();
                    }

                    // set the page title
                    string PageTitle = ConfigurationManager.AppSettings["EstorePageTitle"];
                    if (PageTitle != null)
                        Page.Title = String.Format("{0} - {1}", CategoryName, PageTitle);
                    else
                        Page.Title = CategoryName;
                }
                else
                    throw new Exception("Invalid Category ID");
            }

            BindData();
        }

        //FilterControl1.BindData();
    }

    protected void FilterControl1_AttributeSelected(int AttributeID)
    {
        Response.Redirect(Request.RawUrl + "/" + AttributeID);
    }
    #endregion

    public void BindData()
    {
        DataTable dt = Database.Selectors_GetForBrowsing(CategoryID, AttributeIDList, AttributeIDCount);

        if (dt.Rows.Count > 0)
        {
            DataView dv = dt.DefaultView;

            

            Pagination1.MaxResults = dv.Count;
            Pagination2.MaxResults = dv.Count;

            if (Pagination1.PageIndex != -1)
            {   // we only need filter if they are using pagination
                dv.RowFilter = "RowNumber >= " + Pagination1.LowRow + " AND RowNumber < " + Pagination1.HighRow;
            }

            
            dlProducts.DataSource = dv;
            dlProducts.DataBind();
        }
        else
        {
            pnlNoResults.Visible = true;
        }

        // now bind the sub categories, if there are any
        if (CategoryID > 0 && Pagination1.PageIndex == 1)
        {
            dt = Database.Categories_GetChildren(CategoryID);

            dlSubCategories.DataSource = dt;
            dlSubCategories.DataBind();
            dlSubCategories.Visible = true;
        }
    }

    protected void dlSubCategories_ItemDataBound(object sender, DataListItemEventArgs e)
    {
        DataRowView drv = (DataRowView)e.Item.DataItem;
        DataList dlSubCategoryProducts = (DataList)e.Item.FindControl("dlSubCategoryProducts");

        DataTable dt = Database.Selectors_GetTopResultsByCategoryID(4, (int)drv["CategoryID"]);

        dlSubCategoryProducts.DataSource = dt;
        dlSubCategoryProducts.DataBind();
    }
}