// Copyright (c) 2011, Outercurve Foundation.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// - Redistributions of source code must  retain  the  above copyright notice, this
//   list of conditions and the following disclaimer.
//
// - Redistributions in binary form  must  reproduce the  above  copyright  notice,
//   this list of conditions  and  the  following  disclaimer in  the documentation
//   and/or other materials provided with the distribution.
//
// - Neither  the  name  of  the  Outercurve Foundation  nor   the   names  of  its
//   contributors may be used to endorse or  promote  products  derived  from  this
//   software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,  BUT  NOT  LIMITED TO, THE IMPLIED
// WARRANTIES  OF  MERCHANTABILITY   AND  FITNESS  FOR  A  PARTICULAR  PURPOSE  ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL,  SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO,  PROCUREMENT  OF  SUBSTITUTE  GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  HOWEVER  CAUSED AND ON
// ANY  THEORY  OF  LIABILITY,  WHETHER  IN  CONTRACT,  STRICT  LIABILITY,  OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING  IN  ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using System;
using System.IO;
using System.Xml;
using System.Security.Principal;
using System.Resources;
using System.Configuration;
using System.Collections.Specialized;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Web.Compilation;
using System.Web.Configuration;
using System.Web.UI;
using System.Web.Security;
using System.Web.UI.WebControls;
using System.Net;
using System.Net.Mail;

using Microsoft.Web.Services3;
using WebsitePanel.EnterpriseServer;
using WebsitePanel.WebPortal;

namespace WebsitePanel.Portal
{
	public class PortalUtils
	{
		public const string SharedResourcesFile = "SharedResources.ascx.resx";
        public const string CONFIG_FOLDER = "~/App_Data/";
	    public const string SUPPORTED_THEMES_FILE = "SupportedThemes.config";
	    public const string SUPPORTED_LOCALES_FILE = "SupportedLocales.config";
        public const string USER_ID_PARAM = "UserID";
        public const string SPACE_ID_PARAM = "SpaceID";
        public const string SEARCH_QUERY_PARAM = "Query";

		public static string CultureCookieName
		{
			get { return PortalConfiguration.SiteSettings["CultureCookieName"]; }
		}

		public static string ThemeCookieName
		{
			get { return PortalConfiguration.SiteSettings["ThemeCookieName"]; }
		}

		public static System.Globalization.CultureInfo CurrentCulture
		{
			get { return GetCurrentCulture(); }
		}

		public static System.Globalization.CultureInfo CurrentUICulture
		{
			get { return GetCurrentCulture(); }
		}

		public static string CurrentTheme
		{
			get { return GetCurrentTheme(); }
		}

        internal static string GetCurrentTheme()
        {
            string theme = (string) HttpContext.Current.Items[ThemeCookieName];

            if (theme == null)
            {
                HttpCookie cookie = HttpContext.Current.Request.Cookies[ThemeCookieName];
                if (cookie != null)
                {
                    theme = cookie.Value;

                    if (!String.IsNullOrEmpty(theme))
                    {
                        HttpContext.Current.Items[ThemeCookieName] = theme;
                        return theme;
                    }
                }
                else
                {
                    string appData = HttpContext.Current.Server.MapPath(CONFIG_FOLDER);
                    string path = Path.Combine(appData, SUPPORTED_THEMES_FILE);

                    XmlTextReader reader = new XmlTextReader(path);
                    reader.XmlResolver = null;
                    reader.WhitespaceHandling = WhitespaceHandling.None;
                    reader.MoveToContent();
                    if (reader.Name != null)
                    {
                        while (reader.Read())
                        {
                            if (reader.NodeType == XmlNodeType.Element)
                            {
                                if (reader.HasAttributes)
                                {
                                    reader.MoveToFirstAttribute();
                                    theme = reader.Value;
                                    return theme;
                                }
                            }
                        }
                    }
                }
            }
            return String.IsNullOrEmpty(theme) ? "Default" : theme;
        }

	    public static void SetCurrentTheme(string theme)
		{
			// theme
			if (!String.IsNullOrEmpty(theme))
			{
				HttpCookie cookieTheme = new HttpCookie(ThemeCookieName, theme);
				cookieTheme.Expires = DateTime.Now.AddMonths(2);
				HttpContext.Current.Response.Cookies.Add(cookieTheme);
			}
		}

		internal static System.Globalization.CultureInfo GetCurrentCulture()
		{
			System.Globalization.CultureInfo ci = (System.Globalization.CultureInfo)
					HttpContext.Current.Items[CultureCookieName];

			if (ci == null)
			{
				HttpCookie localeCrumb = HttpContext.Current.Request.Cookies[CultureCookieName];
				if (localeCrumb != null)
				{
					ci = System.Globalization.CultureInfo.CreateSpecificCulture(localeCrumb.Value);

					if (ci != null)
					{
						HttpContext.Current.Items[CultureCookieName] = ci;
						return ci;
					}
				}
			}
			else
				return ci;

			return System.Threading.Thread.CurrentThread.CurrentCulture;
		}

		public static string AdminEmail
		{
			get { return PortalConfiguration.SiteSettings["AdminEmail"]; }
		}

		public static string FromEmail
		{
			get { return PortalConfiguration.SiteSettings["FromEmail"]; }
		}

        public static void SendMail(string from, string to, string bcc, string subject, string body)
        {
            // Command line argument must the the SMTP host.
            SmtpClient client = new SmtpClient();

            // set SMTP client settings
            client.Host = PortalConfiguration.SiteSettings["SmtpHost"];
            client.Port = Int32.Parse(PortalConfiguration.SiteSettings["SmtpPort"]);
            string smtpUsername = PortalConfiguration.SiteSettings["SmtpUsername"];
            string smtpPassword = PortalConfiguration.SiteSettings["SmtpPassword"];
            if (String.IsNullOrEmpty(smtpUsername))
            {
                client.Credentials = new NetworkCredential(smtpUsername, smtpPassword);
            }

            // create message
            MailMessage message = new MailMessage(from, to);
            message.Body = body;
            message.BodyEncoding = System.Text.Encoding.UTF8;
            message.IsBodyHtml = false;
            message.Subject = subject;
            message.SubjectEncoding = System.Text.Encoding.UTF8;
            if (!String.IsNullOrEmpty(bcc))
                message.Bcc.Add(bcc);

            // send message
            try
            {
                client.Send(message);
            }
            finally
            {
                // Clean up.
                message.Dispose();
            }
        }

		public static void UserSignOut()
		{
			FormsAuthentication.SignOut();
            HttpContext.Current.Response.Redirect(LoginRedirectUrl);
		}

		public static MenuItem GetSpaceMenuItem(string menuItemKey)
		{
			MenuItem item = new MenuItem();
			item.Value = menuItemKey;

			menuItemKey = String.Concat("Space", menuItemKey);

			PortalPage page = PortalConfiguration.Site.Pages[menuItemKey];

			if (page != null)
                item.NavigateUrl = DefaultPage.GetPageUrl(menuItemKey);

			return item;
		}

		private static FormsAuthenticationTicket AuthTicket
		{
			get
			{
				FormsAuthenticationTicket authTicket = (FormsAuthenticationTicket)HttpContext.Current.Items[FormsAuthentication.FormsCookieName];

				if (authTicket == null)
				{
					// original code
					HttpCookie authCookie = HttpContext.Current.Request.Cookies[FormsAuthentication.FormsCookieName];
					// workaround for cases when AuthTicket is required before round-trip
					if (authCookie == null || String.IsNullOrEmpty(authCookie.Value))
						authCookie = HttpContext.Current.Response.Cookies[FormsAuthentication.FormsCookieName];
					//
					if (authCookie != null)
					{
						authTicket = FormsAuthentication.Decrypt(authCookie.Value);
						HttpContext.Current.Items[FormsAuthentication.FormsCookieName] = authTicket;
					}
				}

				return authTicket;
			}
		}

		private static void SetAuthTicket(FormsAuthenticationTicket ticket, bool persistent)
		{
			// issue authentication cookie
			HttpCookie authCookie = new HttpCookie(FormsAuthentication.FormsCookieName);
			authCookie.Domain = FormsAuthentication.CookieDomain;
			authCookie.Secure = FormsAuthentication.RequireSSL;
			authCookie.Path = FormsAuthentication.FormsCookiePath;
			authCookie.Value = FormsAuthentication.Encrypt(ticket);

			if (persistent)
				authCookie.Expires = DateTime.Now.AddMonths(1);

			HttpContext.Current.Response.Cookies.Add(authCookie);
		}

		public static string ApplicationPath
		{
			get
			{
				if (HttpContext.Current.Request.ApplicationPath == "/")
					return "";
				else
					return HttpContext.Current.Request.ApplicationPath;
			}
		}

		public static string GetSharedLocalizedString(string moduleName, string resourceKey)
		{
			string className = SharedResourcesFile.Replace(".resx", "");

			if (!String.IsNullOrEmpty(moduleName))
				className = String.Concat(moduleName, "_", className);
			
			return (string)HttpContext.GetGlobalResourceObject(className, resourceKey);
		}

        public static string GetCurrentPageId()
        {
            return HttpContext.Current.Request["pid"];
        }

        public static bool PageExists(string pageId)
        {
            return PortalConfiguration.Site.Pages[pageId] != null;
        }

        public static string GetLocalizedPageName(string pageId)
        {
            return DefaultPage.GetLocalizedPageName(pageId);
        }

		public static int AuthenticateUser(string username, string password, string ipAddress,
			bool rememberLogin, string preferredLocale, string theme)
		{
			esAuthentication authService = new esAuthentication();
			ConfigureEnterpriseServerProxy(authService, false);

			try
			{
				int authResult = authService.AuthenticateUser(username, password, ipAddress);

				if (authResult < 0)
				{
					return authResult;
				}
				else
				{
					UserInfo user = authService.GetUserByUsernamePassword(username, password, ipAddress);
					if (user != null)
					{
						// issue authentication ticket
						FormsAuthenticationTicket ticket = CreateAuthTicket(user.Username, user.Password, user.Role, rememberLogin);
						SetAuthTicket(ticket, rememberLogin);

						CompleteUserLogin(username, rememberLogin, preferredLocale, theme);
					}

					return 0;
				}
			}
			catch (Exception ex)
			{
				throw ex;
			}
		}

        private static int GetAuthenticationFormsTimeout()
        {
            //default
            int retValue = 30;
            try
            {
                AuthenticationSection authenticationSection = WebConfigurationManager.GetSection("system.web/authentication") as AuthenticationSection;
                if (authenticationSection != null)
                {
                    FormsAuthenticationConfiguration fac = authenticationSection.Forms;
                    retValue = (int) Math.Truncate(fac.Timeout.TotalMinutes);
                }
                    
            }
            catch
            {
                return retValue;
            }

            return retValue;
        }

        private static FormsAuthenticationTicket CreateAuthTicket(string username, string password,
            UserRole role, bool persistent)
        {
            return new FormsAuthenticationTicket(
                1,
                username,
                DateTime.Now,
                DateTime.Now.AddMinutes(GetAuthenticationFormsTimeout()),
                persistent,
                String.Concat(password, Environment.NewLine, Enum.GetName(typeof(UserRole), role))
            );
        }

		public static int ChangeUserPassword(int userId, string newPassword)
		{
			// load user account
			esUsers usersService = new esUsers();
			ConfigureEnterpriseServerProxy(usersService, true);

            try
			{
				UserInfo user = usersService.GetUserById(userId);

				// change WebsitePanel account password
				int result = usersService.ChangeUserPassword(userId, newPassword);
                if (result < 0)
                    return result;

                // change auth cookie
                if (String.Compare(user.Username, AuthTicket.Name, true) == 0)
                {
                    FormsAuthenticationTicket ticket = CreateAuthTicket(user.Username, newPassword, user.Role, AuthTicket.IsPersistent);
					SetAuthTicket(ticket, AuthTicket.IsPersistent);
                }
                return result;
			}
			catch (Exception ex)
			{
				throw ex;
			}
		}

        public static int UpdateUserAccount(UserInfo user)
        {
            return UpdateUserAccount(null, user);
        }

        public static int UpdateUserAccount(string taskId, UserInfo user)
		{
			esUsers usersService = new esUsers();
			ConfigureEnterpriseServerProxy(usersService, true);

			try
			{
				// update user in WebsitePanel
				return usersService.UpdateUserTask(taskId, user);
			}
			catch (Exception ex)
			{
				throw ex;
			}
		}

		public static int AddUserAccount(List<string> log, UserInfo user, bool sendLetter)
		{
			esUsers usersService = new esUsers();
			ConfigureEnterpriseServerProxy(usersService, true);

			try
			{
				// add user to WebsitePanel server
                return usersService.AddUser(user, sendLetter);
			}
			catch (Exception ex)
			{
				throw ex;
			}
		}

		public static int DeleteUserAccount(int userId)
		{
			esUsers usersService = new esUsers();
			ConfigureEnterpriseServerProxy(usersService, true);

			try
			{
				// add user to WebsitePanel server
				return usersService.DeleteUser(userId);
			}
			catch (Exception ex)
			{
				throw ex;
			}
		}

		public static int ChangeUserStatus(int userId, UserStatus status)
		{
			esUsers usersService = new esUsers();
			ConfigureEnterpriseServerProxy(usersService, true);

			try
			{
				// add user to WebsitePanel server
				return usersService.ChangeUserStatus(userId, status);
			}
			catch (Exception ex)
			{
				throw ex;
			}
		}

		public static UserInfo GetCurrentUser()
		{
			UserInfo user = null;

			if (AuthTicket != null)
			{
				esUsers usersService = new esUsers();
				ConfigureEnterpriseServerProxy(usersService);

				user = usersService.GetUserByUsername(AuthTicket.Name);
			}

			return user;
		}

		private static void CompleteUserLogin(string username, bool rememberLogin,
			string preferredLocale, string theme)
		{
			// store last successful username in the cookie
			HttpCookie cookie = new HttpCookie("WebsitePanelLogin", username);
			cookie.Expires = DateTime.Now.AddDays(7);
			HttpContext.Current.Response.Cookies.Add(cookie);

			// set language
			SetCurrentLanguage(preferredLocale);

			// set theme
			SetCurrentTheme(theme);

			// remember me
			if (rememberLogin)
				HttpContext.Current.Response.Cookies[FormsAuthentication.FormsCookieName].Expires = DateTime.Now.AddMonths(1);
		}

		public static void SetCurrentLanguage(string preferredLocale)
		{
			if (!String.IsNullOrEmpty(preferredLocale))
			{
				HttpCookie localeCrumb = new HttpCookie(CultureCookieName, preferredLocale);
				localeCrumb.Expires = DateTime.Now.AddMonths(2);
				HttpContext.Current.Response.Cookies.Add(localeCrumb);
			}
		}

		public static void ConfigureEnterpriseServerProxy(WebServicesClientProtocol proxy)
		{
			ConfigureEnterpriseServerProxy(proxy, true);
		}

		public static void ConfigureEnterpriseServerProxy(WebServicesClientProtocol proxy, bool applyPolicy)
		{
			// load ES properties
			string serverUrl = PortalConfiguration.SiteSettings["EnterpriseServer"];

			EnterpriseServerProxyConfigurator cnfg = new EnterpriseServerProxyConfigurator();
			cnfg.EnterpriseServerUrl = serverUrl;

			// create assertion
			if (applyPolicy)
			{
				if (AuthTicket != null)
				{
					cnfg.Username = AuthTicket.Name;
					cnfg.Password = AuthTicket.UserData.Substring(0, AuthTicket.UserData.IndexOf(Environment.NewLine));
				}
			}

			cnfg.Configure(proxy);
		}

        public static XmlNode GetModuleContentNode(WebPortalControlBase module)
        {
            XmlNodeList nodes = module.Module.SelectNodes("Content");
            return nodes.Count > 0 ? nodes[0] : null;
        }

        public static XmlNodeList GetModuleMenuItems(WebPortalControlBase module)
        {
            return module.Module.SelectNodes("MenuItem");
        }

		public static string FormatIconImageUrl(string url)
		{
			return url;
		}

		public static string FormatIconLinkUrl(object url)
		{
			return DefaultPage.GetPageUrl(url.ToString());
		}

        public static string GetThemedImage(string imageUrl)
        {
            Page page = (Page)HttpContext.Current.Handler;
            return page.ResolveUrl("~/App_Themes/" + page.Theme + "/Images/" + imageUrl);
        }

        public static string GetThemedIcon(string iconUrl)
        {
            Page page = (Page)HttpContext.Current.Handler;
            return page.ResolveUrl("~/App_Themes/" + page.Theme + "/" + iconUrl);
        }

		public static void LoadStatesDropDownList(DropDownList list, string countryCode)
		{
            string xmlFilePath = HttpContext.Current.Server.MapPath(CONFIG_FOLDER + "CountryStates.config");
			list.Items.Clear();
			if (File.Exists(xmlFilePath))
			{
				try
				{
					XmlDocument xmlDoc = new XmlDocument();
					xmlDoc.Load(xmlFilePath);

					List<ListItem> items = new List<ListItem>();

					XmlNodeList xmlNodes = xmlDoc.SelectNodes("//State[@countryCode='" + countryCode + "']");
					foreach (XmlElement xmlNode in xmlNodes)
					{
						string nodeName = xmlNode.GetAttribute("name");
						string nodeKey = xmlNode.GetAttribute("key");

						items.Add(new ListItem(nodeName, nodeKey));
					}

					list.Items.AddRange(items.ToArray());
				}
				catch
				{
				}
			}
		}

		public static void LoadCountriesDropDownList(DropDownList list, string countryToSelect)
		{
            string countriesPath = HttpContext.Current.Server.MapPath(CONFIG_FOLDER + "Countries.config");
			
			if (File.Exists(countriesPath))
			{
				try
				{
					XmlDocument xmlCountriesDoc = new XmlDocument();
					xmlCountriesDoc.Load(countriesPath);

					List<ListItem> items = new List<ListItem>();

					XmlNodeList xmlCountries = xmlCountriesDoc.SelectNodes("//Country");
					foreach (XmlElement xmlCountry in xmlCountries)
					{
						string countryName = xmlCountry.GetAttribute("name");
						string countryKey = xmlCountry.GetAttribute("key");

						if (String.Compare(countryKey, countryToSelect) == 0)
						{
							ListItem li = new ListItem(countryName, countryKey);
							li.Selected = true;
							items.Add(li);
						}
						else
							items.Add(new ListItem(countryName, countryKey));
					}

					list.Items.AddRange(items.ToArray());
				}
				catch
				{
				}
			}
		}


		public static void LoadCultureDropDownList(DropDownList list)
		{
            string localesPath = HttpContext.Current.Server.MapPath(CONFIG_FOLDER + "SupportedLocales.config");

            if (File.Exists(localesPath))
            {
                
                string localeToSelect = CurrentCulture.Name;

                try
                {
                    XmlDocument xmlLocalesDoc = new XmlDocument();
                    xmlLocalesDoc.Load(localesPath);

                    XmlNodeList xmlLocales = xmlLocalesDoc.SelectNodes("//Locale");
                    for (int i = 0; i < xmlLocales.Count; i++)
                    {
                        XmlElement xmlLocale = (XmlElement) xmlLocales[i];

                        string localeName = xmlLocale.GetAttribute("name");
                        string localeKey = xmlLocale.GetAttribute("key");

                        list.Items.Add(new ListItem(localeName, localeKey));                        
                    }


                    HttpCookie localeCrumb = HttpContext.Current.Request.Cookies[CultureCookieName];
                    if (localeCrumb != null)
                    {
                        ListItem item = list.Items.FindByValue(localeToSelect);
                        if (item != null)
                            item.Selected = true;
                    }
                    else
                    {
                        if (list.Items.Count > 0 && list.Items[0] != null)
                        {
                            SetCurrentLanguage(list.Items[0].Value);
                            HttpContext.Current.Response.Redirect(HttpContext.Current.Request.Url.ToString());
                        }
                    }
                }
                catch
                {
                }
            }
		}

		public static void LoadThemesDropDownList(DropDownList list)
		{
			string localesPath = HttpContext.Current.Server.MapPath(CONFIG_FOLDER + "SupportedThemes.config");

			if (File.Exists(localesPath))
			{
				string themeToSelect = CurrentTheme;

				try
				{
					XmlDocument doc = new XmlDocument();
					doc.Load(localesPath);

					XmlNodeList xmlThemes = doc.SelectNodes("//Theme");
					for (int i = 0; i < xmlThemes.Count; i++)
					{
						XmlElement xmlTheme = (XmlElement)xmlThemes[i];
						string themeName = xmlTheme.GetAttribute("name");
						string themeTitle = xmlTheme.GetAttribute("title");

						list.Items.Add(new ListItem(themeTitle, themeName));

						if (String.Compare(themeName, themeToSelect) == 0)
							list.Items[i].Selected = true;
					}
				}
				catch
				{
				}
			}
		}

        #region Navigation Routines
        public static string LoginRedirectUrl
        {
            get { return DefaultPage.GetPageUrl(PortalConfiguration.SiteSettings["DefaultPage"]); }
        }

        public static string GetUserHomePageUrl(int userId)
        {
            string userHomePageId = PortalConfiguration.SiteSettings["UserHomePage"];
            return userId > 0 ? NavigatePageURL(userHomePageId, USER_ID_PARAM, userId.ToString())
                : NavigatePageURL(userHomePageId);
        }

        public static string GetUserCustomersPageId()
        {
            return PortalConfiguration.SiteSettings["UserCustomersPage"];
        }

        public static string GetUsersSearchPageId()
        {
            return PortalConfiguration.SiteSettings["UsersSearchPage"];
        }

        public static string GetSpacesSearchPageId()
        {
            return PortalConfiguration.SiteSettings["SpacesSearchPage"];
        }

        public static string GetNestedSpacesPageId()
        {
            return PortalConfiguration.SiteSettings["NestedSpacesPage"];
        }

        public static string GetSpaceHomePageUrl(int spaceId)
        {
            string spaceHomePageId = PortalConfiguration.SiteSettings["SpaceHomePage"];
            return spaceId > -1 ? NavigatePageURL(spaceHomePageId, SPACE_ID_PARAM, spaceId.ToString())
                : NavigatePageURL(spaceHomePageId);
        }

        public static string GetLoggedUserAccountPageUrl()
        {
            return NavigatePageURL(PortalConfiguration.SiteSettings["LoggedUserAccountPage"]);
        }

        public static string NavigateURL()
        {
            return NavigateURL(null, null);
        }

        public static string NavigatePageURL(string pageId)
        {
            return NavigatePageURL(pageId, null, null, new string[] { });
        }

        public static string NavigateURL(string keyName, string keyValue, params string[] additionalParams)
        {
            return NavigatePageURL(HttpContext.Current.Request[DefaultPage.PAGE_ID_PARAM], keyName, keyValue, additionalParams);
        }

        public static string NavigatePageURL(string pageId, string keyName, string keyValue, params string[] additionalParams)
        {
            string navigateUrl = DefaultPage.DEFAULT_PAGE;

            List<string> urlBuilder = new List<string>();

            // add page id parameter
            if (!String.IsNullOrEmpty(pageId))
                urlBuilder.Add(String.Concat(DefaultPage.PAGE_ID_PARAM, "=", pageId));

            // add specified key
            if (!String.IsNullOrEmpty(keyName) && !String.IsNullOrEmpty(keyValue))
                urlBuilder.Add(String.Concat(keyName, "=", keyValue));

            // load additional params
			if (additionalParams != null)
			{
                string controlId = null;
                string moduleDefinitionId = null;
                //
				foreach (string paramStr in additionalParams)
				{
					if (paramStr.StartsWith("ctl=", StringComparison.InvariantCultureIgnoreCase))
					{
						// ensure page exists and avoid unnecessary exceptions throw
						if (PortalConfiguration.Site.Pages.ContainsKey(pageId))
						{
							string[] pair = paramStr.Split('=');
                            controlId = pair[1];
                        }
 
					}
                    else if (paramStr.StartsWith("moduleDefId=", StringComparison.InvariantCultureIgnoreCase))
                    {
                        // ensure page exists and avoid unnecessary exceptions throw
                        if (PortalConfiguration.Site.Pages.ContainsKey(pageId))
                        {
                            string[] pair = paramStr.Split('=');
                            moduleDefinitionId = pair[1];
                        }
                        continue;
                    }
					urlBuilder.Add(paramStr);
				}
                if (!String.IsNullOrEmpty(moduleDefinitionId) && !String.IsNullOrEmpty(controlId))
                {
                    // 1. Read module controls first information first
                    foreach (ModuleDefinition md in PortalConfiguration.ModuleDefinitions.Values)
                    {
                        if (String.Equals(md.Id, moduleDefinitionId, StringComparison.InvariantCultureIgnoreCase))
                        {
                            // 2. Lookup for module control
                            foreach (ModuleControl mc in md.Controls.Values)
                            {
                                // 3. Compare against ctl parameter value
                                if (mc.Key.Equals(controlId, StringComparison.InvariantCultureIgnoreCase))
                                {
                                    // 4. Lookup for module id
                                    foreach (int pmKey in PortalConfiguration.Site.Modules.Keys)
                                    {
                                        PageModule pm = PortalConfiguration.Site.Modules[pmKey];
                                        if (String.Equals(pm.ModuleDefinitionID, md.Id,
                                            StringComparison.InvariantCultureIgnoreCase))
                                        {
                                            // 5. Append module id parameter
                                            urlBuilder.Add("mid=" + pmKey);
                                            goto End;
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
			}

            End:
            if (urlBuilder.Count > 0)
                navigateUrl += String.Concat("?", String.Join("&", urlBuilder.ToArray()));

            return navigateUrl;
        }
        #endregion
    }
}


/*
 // 
 */