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.IO;

using Cuyahoga.Web.UI;
using Cuyahoga.Web.Util;
using Cuyahoga.Core;
using Cuyahoga.Core.Domain;
using Cuyahoga.Core.Service;
using Cuyahoga.Core.Search;
using Cuyahoga.Core.Util;
using Cuyahoga.Modules.ImageControl;

namespace Cuyahoga.Modules.ImageControl
{
    public partial class ImageControl : BaseModuleControl 
    {
        private ImageControlModule _module;
        //protected string _path;
        private Cuyahoga.Web.UI.PageEngine _page;
        
        protected void Page_Load(object sender, EventArgs e)
        {
            //add stuff here
            this._module = this.Module as ImageControlModule;

            if (this.Page is PageEngine)
            {
                this._page = (PageEngine)this.Page;

                Node n = this._page.ActiveNode;

                string filename = traverse(n);

                HyperLink1.ImageUrl = Page.ResolveUrl(@"~/Images/header/" + filename);
                HyperLink1.NavigateUrl = UrlHelper.GetSiteUrl();
                HyperLink1.Text = "Lory Student Center - Colorado State University";
            }
        }

        private string traverse( Node no )
        {
            string basepath = Server.MapPath(Page.ResolveUrl(@"~/Images/header/") + no.ShortDescription);

            string image_default = "index/" + System.Configuration.ConfigurationManager.AppSettings["defaultImage"];
            //this._path += " | " + basepath;

            /***** If image directory exists for this node, find a picture there *****/
            if (System.IO.Directory.Exists( basepath ) )
            {
                //select random image
                //return basepath;
                //get directory files
                DirectoryInfo di = new DirectoryInfo(basepath);

                FileInfo[] fi = di.GetFiles("*.jpg");
                int num = fi.Length;
                //this._path += " num: " + num;
                //make sure directory isn't empty
                /*
                 * if case: no files found in dir and dir is at the root so return default
                 * else if case: no files found, but it's not the root so we traverse up
                 * else case: dir found and there are files so pick a random one
                 */
                
                if (num == 0 && no.IsRootNode) return image_default;
                else if (num == 0 && !no.IsRootNode)
                {
                    return traverse(no.ParentNode);
                }
                else
                {
                    //select random image from files
                    Random randobj = new Random();
                    int randnum = randobj.Next(num);
                    //this._path += no.ShortDescription + "/" + fi[randnum].Name;
                    return no.ShortDescription + "/" + fi[randnum].Name;
                }
            }
            else
            {
                /*** if it's the root and there's still no dir found, return default
                 * else traverse up to find dir
                 */
                if (no.IsRootNode) return image_default;
                else  return traverse((Node)no.ParentNode);
            }
        }
    }
}