using System;
using System.Data;

using System.Configuration;
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.Collections.Generic;

namespace Estore
{
    public class ProductNavigation : WebBlocksControl
    {
        private string _CssClass = "";
        public string CssClass
        {
            get { return _CssClass; }
            set { _CssClass = value; }
        }

        private string _UnselectedItemCssClass = "";
        public string UnselectedItemCssClass
        {
            get { return _UnselectedItemCssClass; }
            set { _UnselectedItemCssClass = value; }
        }

        private string _IndentedItemCssClass = "";
        public string IndentedItemCssClass
        {
            get { return _IndentedItemCssClass; }
            set { _IndentedItemCssClass = value; }
        }

        private string _SelectedItemCssClass = "";
        public string SelectedItemCssClass
        {
            get { return _SelectedItemCssClass; }
            set { _SelectedItemCssClass = value; }
        }

        private int _SelectedCategoryID = 0;
        public int SelectedCategoryID
        {
            get { return _SelectedCategoryID; }
            set { _SelectedCategoryID = value; }
        }

        private bool _IncludeBase = false;
        public bool IncludeBase
        {
            get { return _IncludeBase; }
            set { _IncludeBase = value; }
        }

        protected override void Render(HtmlTextWriter writer)
        {
            DataRow drSelectedCategory;

            DataView dv = Database.Categories_GetTwoLevelsDeep().DefaultView;

            writer.Write("<table class=\"categoryMenu\" cellpadding=\"0\" cellspacing=\"0\">");

            if (_SelectedCategoryID > 0)
            {
                // grab the selected category row
                dv.RowFilter = "CategoryId=" + _SelectedCategoryID.ToString();
                drSelectedCategory = dv[0].Row;

                // grab all of it's subcategories
                dv.RowFilter = "ParentCategoryID=" + _SelectedCategoryID;
                DataTable dtSubCategories = dv.ToTable();

                // grab all of it's siblings
                dv.RowFilter = "ParentCategoryID=" + drSelectedCategory["ParentCategoryId"].ToString();
                DataTable dtSiblings = dv.ToTable();

                bool NoChildren = (dtSubCategories.Rows.Count == 0);

                /*
                else if (IncludeBase && !NoChildren)
                {
                    writer.Write("<div class=\"");
                    writer.Write(_UnselectedItemCssClass);
                    writer.Write("\">");
                    writer.Write("<a href=\"");
                    writer.Write(Statics.FormatCategoryUrl(0, "Products"));
                    writer.Write("\">Back to Products</a>");
                    writer.Write("</div><br>");
                }
                */

                // if there are no subcategories... switch down a level
                if (NoChildren && drSelectedCategory["ParentParentId"] != DBNull.Value)
                {
                    // if we are showing the base, then we display a back button when the parent is 0, otherwise, no
                    string ParentName = ((int)drSelectedCategory["ParentParentId"] != 0 ? (string)drSelectedCategory["ParentParentName"] : "Store");
                    writer.Write("<div class=\"");
                    writer.Write(_UnselectedItemCssClass);
                    writer.Write("\">");
                    writer.Write("<a href=\"");
                    writer.Write(Utilities.FormatCategoryUrl((int)drSelectedCategory["ParentParentId"], ParentName));
                    writer.Write("\"><b>Back to ");
                    writer.Write(ParentName);
                    writer.Write("</b></a>");
                    writer.Write("</div><br>");

                    // make the current siblings become the children
                    dtSubCategories = dtSiblings;

                    // and now make the current categories' parent's parent become the new siblings
                    dv.RowFilter = "ParentCategoryID=" + drSelectedCategory["ParentParentId"].ToString();
                    dtSiblings = dv.ToTable();

                    // render this new stuff
                    foreach (DataRow dr in dtSiblings.Rows)
                    {
                        int SiblingID = (int)dr["CategoryID"];
                        if (SiblingID == (int)drSelectedCategory["ParentCategoryId"])
                        {
                            writer.Write("<div class=\"");
                            writer.Write(_SelectedItemCssClass);
                            writer.Write("\">");
                            writer.Write("<a href=\"");
                            writer.Write(Utilities.FormatCategoryUrl((int)dr["CategoryID"], (string)dr["CategoryName"]));
                            writer.Write("\">");
                            writer.Write((string)dr["CategoryName"]);
                            writer.Write("</a>");

                            // this is the selected category, so show it's children, if it has them
                            if (dtSubCategories.Rows.Count > 0)
                            {
                                writer.Write("<div class=\"");
                                writer.Write(_IndentedItemCssClass);
                                writer.Write("\">");

                                foreach (DataRow drSubCategory in dtSubCategories.Rows)
                                {
                                    writer.Write("<div class=\"");
                                    if ((int)drSubCategory["CategoryID"] == _SelectedCategoryID)
                                        writer.Write(_SelectedItemCssClass);
                                    else
                                        writer.Write(_UnselectedItemCssClass);
                                    writer.Write("\">");
                                    writer.Write("<a href=\"");
                                    writer.Write(Utilities.FormatCategoryUrl((int)drSubCategory["CategoryID"], (string)drSubCategory["CategoryName"]));
                                    writer.Write("\">");
                                    writer.Write((string)drSubCategory["CategoryName"]);
                                    writer.Write("</a>");
                                    writer.Write("</div>");
                                }
                                writer.Write("</div>");
                            }

                            writer.Write("</div>");
                        }
                        else
                        {
                            writer.Write("<div class=\"");
                            writer.Write(_UnselectedItemCssClass);
                            writer.Write("\">");
                            writer.Write("<a href=\"");
                            writer.Write(Utilities.FormatCategoryUrl((int)dr["CategoryID"], (string)dr["CategoryName"]));
                            writer.Write("\">");
                            writer.Write((string)dr["CategoryName"]);
                            writer.Write("</a>");
                            writer.Write("</div>");
                        }
                    }
                }
                else
                {
                    if ((int)drSelectedCategory["ParentCategoryId"] != 0)
                    {
                        string ParentName = (string)drSelectedCategory["ParentName"];
                        writer.Write("<div class=\"");
                        writer.Write(_UnselectedItemCssClass);
                        writer.Write("\">");
                        writer.Write("<a href=\"");
                        writer.Write(Utilities.FormatCategoryUrl((int)drSelectedCategory["ParentCategoryID"], ParentName));
                        writer.Write("\"><b>Back to ");
                        writer.Write(ParentName);
                        writer.Write("</b></a>");
                        writer.Write("</div><br>");
                    }

                    // render everything
                    foreach (DataRow dr in dtSiblings.Rows)
                    {
                        int SiblingID = (int)dr["CategoryID"];
                        if (SiblingID == (int)drSelectedCategory["CategoryID"])
                        {
                            writer.Write("<div class=\"");
                            writer.Write(_SelectedItemCssClass);
                            writer.Write("\">");
                            writer.Write("<a href=\"");
                            writer.Write(Utilities.FormatCategoryUrl((int)dr["CategoryID"], (string)dr["CategoryName"]));
                            writer.Write("\">");
                            writer.Write((string)dr["CategoryName"]);
                            writer.Write("</a>");

                            // this is the selected category, so show it's children, if it has them
                            if (dtSubCategories.Rows.Count > 0)
                            {
                                writer.Write("<div class=\"");
                                writer.Write(_IndentedItemCssClass);
                                writer.Write("\">");

                                foreach (DataRow drSubCategory in dtSubCategories.Rows)
                                {
                                    writer.Write("<div class=\"");
                                    writer.Write(_UnselectedItemCssClass);
                                    writer.Write("\">");
                                    writer.Write("<a href=\"");
                                    writer.Write(Utilities.FormatCategoryUrl((int)drSubCategory["CategoryID"], (string)drSubCategory["CategoryName"]));
                                    writer.Write("\">");
                                    writer.Write((string)drSubCategory["CategoryName"]);
                                    writer.Write("</a>");
                                    writer.Write("</div>");
                                }
                                writer.Write("</div>");
                            }

                            writer.Write("</div>");
                        }
                        else
                        {
                            writer.Write("<div class=\"");
                            writer.Write(_UnselectedItemCssClass);
                            writer.Write("\">");
                            writer.Write("<a href=\"");
                            writer.Write(Utilities.FormatCategoryUrl((int)dr["CategoryID"], (string)dr["CategoryName"]));
                            writer.Write("\">");
                            writer.Write((string)dr["CategoryName"]);
                            writer.Write("</a>");
                            writer.Write("</div>");
                        }
                    }
                }                
            }
            else
            {
                dv.RowFilter = "ParentCategoryId=0";
                foreach (DataRowView drv in dv)
                {
                    writer.Write("<tr>");
                    writer.Write("<td class=\"icon\"><img src=\"images/");
                    writer.Write((string)drv["CategoryIcon"]);
                    writer.Write("\" />");
                    writer.Write("</td>");
                    writer.Write("<td class=\"text ");
                    writer.Write(_UnselectedItemCssClass);
                    writer.Write("\">");
                    writer.Write("<a href=\"");
                    writer.Write(Utilities.FormatCategoryUrl((int)drv["CategoryID"], (string)drv["CategoryName"]));
                    writer.Write("\">");
                    writer.Write((string)drv["CategoryName"]);
                    writer.Write("</a></td>");
                    writer.Write("</tr>");
                }
            }

            writer.Write("</table>");

            base.Render(writer);
        }
    }
}