/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* 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 OpenSim Project 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 DEVELOPERS ``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 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.Collections.Generic;
using System.Data;
using System.IO;
using System.Reflection;
using libsecondlife;
using MySql.Data.MySqlClient;
using OpenSim.Framework.Console;

namespace OpenSim.Framework.Data.MySQL
{
    /// <summary>
    /// A MySQL Database manager
    /// </summary>
    internal class MySQLManager
    {
        private static readonly log4net.ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

        /// <summary>
        /// The database connection object
        /// </summary>
        private MySqlConnection dbcon;

        /// <summary>
        /// Connection string for ADO.net
        /// </summary>
        private string connectionString;

        /// <summary>
        /// Initialises and creates a new MySQL connection and maintains it.
        /// </summary>
        /// <param name="hostname">The MySQL server being connected to</param>
        /// <param name="database">The name of the MySQL database being used</param>
        /// <param name="username">The username logging into the database</param>
        /// <param name="password">The password for the user logging in</param>
        /// <param name="cpooling">Whether to use connection pooling or not, can be one of the following: 'yes', 'true', 'no' or 'false', if unsure use 'false'.</param>
        public MySQLManager(string hostname, string database, string username, string password, string cpooling,
                            string port)
        {
            try
            {
                connectionString = "Server=" + hostname + ";Port=" + port + ";Database=" + database + ";User ID=" +
                                   username + ";Password=" + password + ";Pooling=" + cpooling + ";";
                dbcon = new MySqlConnection(connectionString);

                dbcon.Open();

                m_log.Info("[MYSQL]: Connection established");
            }
            catch (Exception e)
            {
                throw new Exception("Error initialising MySql Database: " + e.ToString());
            }
        }

        /// <summary>
        /// Get the connection being used
        /// </summary>
        public MySqlConnection Connection
        {
            get { return dbcon; }
        }

        /// <summary>
        /// Shuts down the database connection
        /// </summary>
        public void Close()
        {
            dbcon.Close();
            dbcon = null;
        }

        /// <summary>
        /// Reconnects to the database
        /// </summary>
        public void Reconnect()
        {
            lock (dbcon)
            {
                try
                {
                    // Close the DB connection
                    dbcon.Close();
                    // Try reopen it
                    dbcon = new MySqlConnection(connectionString);
                    dbcon.Open();
                }
                catch (Exception e)
                {
                    m_log.Error("Unable to reconnect to database " + e.ToString());
                }
            }
        }

        /// <summary>
        /// Returns the version of this DB provider
        /// </summary>
        /// <returns>A string containing the DB provider</returns>
        public string getVersion()
        {
            Module module = GetType().Module;
            string dllName = module.Assembly.ManifestModule.Name;
            Version dllVersion = module.Assembly.GetName().Version;


            return
                string.Format("{0}.{1}.{2}.{3}", dllVersion.Major, dllVersion.Minor, dllVersion.Build,
                              dllVersion.Revision);
        }


        /// <summary>
        /// Extract a named string resource from the embedded resources
        /// </summary>
        /// <param name="name">name of embedded resource</param>
        /// <returns>string contained within the embedded resource</returns>
        private string getResourceString(string name)
        {
            Assembly assem = GetType().Assembly;
            string[] names = assem.GetManifestResourceNames();

            foreach (string s in names)
                if (s.EndsWith(name))
                    using (Stream resource = assem.GetManifestResourceStream(s))
                    {
                        using (StreamReader resourceReader = new StreamReader(resource))
                        {
                            string resourceString = resourceReader.ReadToEnd();
                            return resourceString;
                        }
                    }
            throw new Exception(string.Format("Resource '{0}' was not found", name));
        }

        /// <summary>
        /// Execute a SQL statement stored in a resource, as a string
        /// </summary>
        /// <param name="name"></param>
        public void ExecuteResourceSql(string name)
        {
            MySqlCommand cmd = new MySqlCommand(getResourceString(name), dbcon);
            cmd.ExecuteNonQuery();
        }

        /// <summary>
        /// Given a list of tables, return the version of the tables, as seen in the database
        /// </summary>
        /// <param name="tableList"></param>
        public void GetTableVersion(Dictionary<string, string> tableList)
        {
            lock (dbcon)
            {
                MySqlCommand tablesCmd =
                    new MySqlCommand(
                        "SELECT TABLE_NAME, TABLE_COMMENT FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA=?dbname",
                        dbcon);
                tablesCmd.Parameters.AddWithValue("?dbname", dbcon.Database);
                using (MySqlDataReader tables = tablesCmd.ExecuteReader())
                {
                    while (tables.Read())
                    {
                        try
                        {
                            string tableName = (string) tables["TABLE_NAME"];
                            string comment = (string) tables["TABLE_COMMENT"];
                            if (tableList.ContainsKey(tableName))
                                tableList[tableName] = comment;
                        }
                        catch (Exception e)
                        {
                            m_log.Error(e.ToString());
                        }
                    }
                    tables.Close();
                }
            }
        }


        // at some time this code should be cleaned up

        /// <summary>
        /// Runs a query with protection against SQL Injection by using parameterised input.
        /// </summary>
        /// <param name="sql">The SQL string - replace any variables such as WHERE x = "y" with WHERE x = @y</param>
        /// <param name="parameters">The parameters - index so that @y is indexed as 'y'</param>
        /// <returns>A MySQL DB Command</returns>
        public IDbCommand Query(string sql, Dictionary<string, string> parameters)
        {
            try
            {
                MySqlCommand dbcommand = (MySqlCommand) dbcon.CreateCommand();
                dbcommand.CommandText = sql;
                foreach (KeyValuePair<string, string> param in parameters)
                {
                    dbcommand.Parameters.AddWithValue(param.Key, param.Value);
                }

                return (IDbCommand) dbcommand;
            }
            catch
            {
                lock (dbcon)
                {
                    // Close the DB connection
                    try
                    {
                        dbcon.Close();
                    }
                    catch
                    {
                    }

                    // Try reopen it
                    try
                    {
                        dbcon = new MySqlConnection(connectionString);
                        dbcon.Open();
                    }
                    catch (Exception e)
                    {
                        m_log.Error("Unable to reconnect to database " + e.ToString());
                    }

                    // Run the query again
                    try
                    {
                        MySqlCommand dbcommand = (MySqlCommand) dbcon.CreateCommand();
                        dbcommand.CommandText = sql;
                        foreach (KeyValuePair<string, string> param in parameters)
                        {
                            dbcommand.Parameters.AddWithValue(param.Key, param.Value);
                        }

                        return (IDbCommand) dbcommand;
                    }
                    catch (Exception e)
                    {
                        // Return null if it fails.
                        m_log.Error("Failed during Query generation: " + e.ToString());
                        return null;
                    }
                }
            }
        }

        /// <summary>
        /// Reads a region row from a database reader
        /// </summary>
        /// <param name="reader">An active database reader</param>
        /// <returns>A region profile</returns>
        public RegionProfileData readSimRow(IDataReader reader)
        {
            RegionProfileData retval = new RegionProfileData();

            if (reader.Read())
            {
                // Region Main
                retval.regionHandle = Convert.ToUInt64(reader["regionHandle"].ToString());
                retval.regionName = (string) reader["regionName"];
                retval.UUID = new LLUUID((string) reader["uuid"]);

                // Secrets
                retval.regionRecvKey = (string) reader["regionRecvKey"];
                retval.regionSecret = (string) reader["regionSecret"];
                retval.regionSendKey = (string) reader["regionSendKey"];

                // Region Server
                retval.regionDataURI = (string) reader["regionDataURI"];
                retval.regionOnline = false; // Needs to be pinged before this can be set.
                retval.serverIP = (string) reader["serverIP"];
                retval.serverPort = (uint) reader["serverPort"];
                retval.serverURI = (string) reader["serverURI"];
                retval.httpPort = Convert.ToUInt32(reader["serverHttpPort"].ToString());
                retval.remotingPort = Convert.ToUInt32(reader["serverRemotingPort"].ToString());

                // Location
                retval.regionLocX = Convert.ToUInt32(reader["locX"].ToString());
                retval.regionLocY = Convert.ToUInt32(reader["locY"].ToString());
                retval.regionLocZ = Convert.ToUInt32(reader["locZ"].ToString());

                // Neighbours - 0 = No Override
                retval.regionEastOverrideHandle = Convert.ToUInt64(reader["eastOverrideHandle"].ToString());
                retval.regionWestOverrideHandle = Convert.ToUInt64(reader["westOverrideHandle"].ToString());
                retval.regionSouthOverrideHandle = Convert.ToUInt64(reader["southOverrideHandle"].ToString());
                retval.regionNorthOverrideHandle = Convert.ToUInt64(reader["northOverrideHandle"].ToString());

                // Assets
                retval.regionAssetURI = (string) reader["regionAssetURI"];
                retval.regionAssetRecvKey = (string) reader["regionAssetRecvKey"];
                retval.regionAssetSendKey = (string) reader["regionAssetSendKey"];

                // Userserver
                retval.regionUserURI = (string) reader["regionUserURI"];
                retval.regionUserRecvKey = (string) reader["regionUserRecvKey"];
                retval.regionUserSendKey = (string) reader["regionUserSendKey"];

                // World Map Addition
                string tempRegionMap = reader["regionMapTexture"].ToString();
                if (tempRegionMap != String.Empty)
                {
                    retval.regionMapTextureID = new LLUUID(tempRegionMap);
                }
                else
                {
                    retval.regionMapTextureID = LLUUID.Zero;
                }

		// Added by daTwitch
		// part of an initial brutish effort to provide accurate information (as per the xml region spec)
		// wrt the ownership of a given region
		// the (very bad) assumption is that this value is being read and handled inconsistently or
		// not at all. Current strategy is to put the code in place to support the validity of this information
		// and to roll forward debugging any issues from that point
		//
		// this particular section of the mod attempts to supply a value from the region table to the caller of 'readSimRow()' 
		// for the UUID of the region's owner (master avatar)
		// 
		//retval.owner_uuid = (string) reader["owner_uuid"];
                try
                {
                    retval.owner_uuid = new LLUUID((string)reader["owner_uuid"]);
                }
                catch
                {
                    retval.owner_uuid = LLUUID.Zero;
                }
        //
		// end of daTwitch's mods to this file
            }
            else
            {
                return null;
            }
            return retval;
        }

        /// <summary>
        /// Reads a reservation row from a database reader
        /// </summary>
        /// <param name="reader">An active database reader</param>
        /// <returns>A reservation data object</returns>
        public ReservationData readReservationRow(IDataReader reader)
        {
            ReservationData retval = new ReservationData();
            if (reader.Read())
            {
                retval.gridRecvKey = (string) reader["gridRecvKey"];
                retval.gridSendKey = (string) reader["gridSendKey"];
                retval.reservationCompany = (string) reader["resCompany"];
                retval.reservationMaxX = Convert.ToInt32(reader["resXMax"].ToString());
                retval.reservationMaxY = Convert.ToInt32(reader["resYMax"].ToString());
                retval.reservationMinX = Convert.ToInt32(reader["resXMin"].ToString());
                retval.reservationMinY = Convert.ToInt32(reader["resYMin"].ToString());
                retval.reservationName = (string) reader["resName"];
                retval.status = Convert.ToInt32(reader["status"].ToString()) == 1;
                retval.userUUID = new LLUUID((string) reader["userUUID"]);
            }
            else
            {
                return null;
            }
            return retval;
        }

        /// <summary>
        /// Reads an agent row from a database reader
        /// </summary>
        /// <param name="reader">An active database reader</param>
        /// <returns>A user session agent</returns>
        public UserAgentData readAgentRow(IDataReader reader)
        {
            UserAgentData retval = new UserAgentData();

            if (reader.Read())
            {
                // Agent IDs
                retval.UUID = new LLUUID((string) reader["UUID"]);
                retval.sessionID = new LLUUID((string) reader["sessionID"]);
                retval.secureSessionID = new LLUUID((string) reader["secureSessionID"]);

                // Agent Who?
                retval.agentIP = (string) reader["agentIP"];
                retval.agentPort = Convert.ToUInt32(reader["agentPort"].ToString());
                retval.agentOnline = Convert.ToBoolean(reader["agentOnline"].ToString());

                // Login/Logout times (UNIX Epoch)
                retval.loginTime = Convert.ToInt32(reader["loginTime"].ToString());
                retval.logoutTime = Convert.ToInt32(reader["logoutTime"].ToString());

                // Current position
                retval.currentRegion = (string) reader["currentRegion"];
                retval.currentHandle = Convert.ToUInt64(reader["currentHandle"].ToString());
                LLVector3.TryParse((string) reader["currentPos"], out retval.currentPos);
            }
            else
            {
                return null;
            }
            return retval;
        }

        /// <summary>
        /// Reads a user profile from an active data reader
        /// </summary>
        /// <param name="reader">An active database reader</param>
        /// <returns>A user profile</returns>
        public UserProfileData readUserRow(IDataReader reader)
        {
            UserProfileData retval = new UserProfileData();

            if (reader.Read())
            {
                retval.UUID = new LLUUID((string) reader["UUID"]);
                retval.username = (string) reader["username"];
                retval.surname = (string) reader["lastname"];

                retval.passwordHash = (string) reader["passwordHash"];
                retval.passwordSalt = (string) reader["passwordSalt"];

                retval.homeRegion = Convert.ToUInt64(reader["homeRegion"].ToString());
                retval.homeLocation = new LLVector3(
                    Convert.ToSingle(reader["homeLocationX"].ToString()),
                    Convert.ToSingle(reader["homeLocationY"].ToString()),
                    Convert.ToSingle(reader["homeLocationZ"].ToString()));
                retval.homeLookAt = new LLVector3(
                    Convert.ToSingle(reader["homeLookAtX"].ToString()),
                    Convert.ToSingle(reader["homeLookAtY"].ToString()),
                    Convert.ToSingle(reader["homeLookAtZ"].ToString()));

                retval.created = Convert.ToInt32(reader["created"].ToString());
                retval.lastLogin = Convert.ToInt32(reader["lastLogin"].ToString());

                retval.userInventoryURI = (string) reader["userInventoryURI"];
                retval.userAssetURI = (string) reader["userAssetURI"];

                retval.profileCanDoMask = Convert.ToUInt32(reader["profileCanDoMask"].ToString());
                retval.profileWantDoMask = Convert.ToUInt32(reader["profileWantDoMask"].ToString());

                retval.profileAboutText = (string) reader["profileAboutText"];
                retval.profileFirstText = (string) reader["profileFirstText"];

                retval.profileImage = new LLUUID((string) reader["profileImage"]);
                retval.profileFirstImage = new LLUUID((string) reader["profileFirstImage"]);
                
                if( reader.IsDBNull( reader.GetOrdinal( "webLoginKey" ) ) )
                {
                    retval.webLoginKey = LLUUID.Zero;
                }
                else
                {
                    retval.webLoginKey = new LLUUID((string)reader["webLoginKey"]);
                }
            }
            else
            {
                return null;
            }
            return retval;
        }


        /// <summary>
        /// Inserts a new row into the log database
        /// </summary>
        /// <param name="serverDaemon">The daemon which triggered this event</param>
        /// <param name="target">Who were we operating on when this occured (region UUID, user UUID, etc)</param>
        /// <param name="methodCall">The method call where the problem occured</param>
        /// <param name="arguments">The arguments passed to the method</param>
        /// <param name="priority">How critical is this?</param>
        /// <param name="logMessage">Extra message info</param>
        /// <returns>Saved successfully?</returns>
        public bool insertLogRow(string serverDaemon, string target, string methodCall, string arguments, int priority,
                                 string logMessage)
        {
            string sql = "INSERT INTO logs (`target`, `server`, `method`, `arguments`, `priority`, `message`) VALUES ";
            sql += "(?target, ?server, ?method, ?arguments, ?priority, ?message)";

            Dictionary<string, string> parameters = new Dictionary<string, string>();
            parameters["?server"] = serverDaemon;
            parameters["?target"] = target;
            parameters["?method"] = methodCall;
            parameters["?arguments"] = arguments;
            parameters["?priority"] = priority.ToString();
            parameters["?message"] = logMessage;

            bool returnval = false;

            try
            {
                IDbCommand result = Query(sql, parameters);

                if (result.ExecuteNonQuery() == 1)
                    returnval = true;

                result.Dispose();
            }
            catch (Exception e)
            {
                m_log.Error(e.ToString());
                return false;
            }

            return returnval;
        }


        /// <summary>
        /// Creates a new user and inserts it into the database
        /// </summary>
        /// <param name="uuid">User ID</param>
        /// <param name="username">First part of the login</param>
        /// <param name="lastname">Second part of the login</param>
        /// <param name="passwordHash">A salted hash of the users password</param>
        /// <param name="passwordSalt">The salt used for the password hash</param>
        /// <param name="homeRegion">A regionHandle of the users home region</param>
        /// <param name="homeLocX">Home region position vector</param>
        /// <param name="homeLocY">Home region position vector</param>
        /// <param name="homeLocZ">Home region position vector</param>
        /// <param name="homeLookAtX">Home region 'look at' vector</param>
        /// <param name="homeLookAtY">Home region 'look at' vector</param>
        /// <param name="homeLookAtZ">Home region 'look at' vector</param>
        /// <param name="created">Account created (unix timestamp)</param>
        /// <param name="lastlogin">Last login (unix timestamp)</param>
        /// <param name="inventoryURI">Users inventory URI</param>
        /// <param name="assetURI">Users asset URI</param>
        /// <param name="canDoMask">I can do mask</param>
        /// <param name="wantDoMask">I want to do mask</param>
        /// <param name="aboutText">Profile text</param>
        /// <param name="firstText">Firstlife text</param>
        /// <param name="profileImage">UUID for profile image</param>
        /// <param name="firstImage">UUID for firstlife image</param>
        /// <returns>Success?</returns>
        public bool insertUserRow(LLUUID uuid, string username, string lastname, string passwordHash,
                                  string passwordSalt, UInt64 homeRegion, float homeLocX, float homeLocY, float homeLocZ,
                                  float homeLookAtX, float homeLookAtY, float homeLookAtZ, int created, int lastlogin,
                                  string inventoryURI, string assetURI, uint canDoMask, uint wantDoMask,
                                  string aboutText, string firstText,
                                  LLUUID profileImage, LLUUID firstImage, LLUUID webLoginKey)
        {
            string sql =
                "INSERT INTO users (`UUID`, `username`, `lastname`, `passwordHash`, `passwordSalt`, `homeRegion`, ";
            sql +=
                "`homeLocationX`, `homeLocationY`, `homeLocationZ`, `homeLookAtX`, `homeLookAtY`, `homeLookAtZ`, `created`, ";
            sql +=
                "`lastLogin`, `userInventoryURI`, `userAssetURI`, `profileCanDoMask`, `profileWantDoMask`, `profileAboutText`, ";
            sql += "`profileFirstText`, `profileImage`, `profileFirstImage`, `webLoginKey`) VALUES ";

            sql += "(?UUID, ?username, ?lastname, ?passwordHash, ?passwordSalt, ?homeRegion, ";
            sql +=
                "?homeLocationX, ?homeLocationY, ?homeLocationZ, ?homeLookAtX, ?homeLookAtY, ?homeLookAtZ, ?created, ";
            sql +=
                "?lastLogin, ?userInventoryURI, ?userAssetURI, ?profileCanDoMask, ?profileWantDoMask, ?profileAboutText, ";
            sql += "?profileFirstText, ?profileImage, ?profileFirstImage, ?webLoginKey)";

            Dictionary<string, string> parameters = new Dictionary<string, string>();
            parameters["?UUID"] = uuid.ToString();
            parameters["?username"] = username.ToString();
            parameters["?lastname"] = lastname.ToString();
            parameters["?passwordHash"] = passwordHash.ToString();
            parameters["?passwordSalt"] = passwordSalt.ToString();
            parameters["?homeRegion"] = homeRegion.ToString();
            parameters["?homeLocationX"] = homeLocX.ToString();
            parameters["?homeLocationY"] = homeLocY.ToString();
            parameters["?homeLocationZ"] = homeLocZ.ToString();
            parameters["?homeLookAtX"] = homeLookAtX.ToString();
            parameters["?homeLookAtY"] = homeLookAtY.ToString();
            parameters["?homeLookAtZ"] = homeLookAtZ.ToString();
            parameters["?created"] = created.ToString();
            parameters["?lastLogin"] = lastlogin.ToString();
            parameters["?userInventoryURI"] = String.Empty;
            parameters["?userAssetURI"] = String.Empty;
            parameters["?profileCanDoMask"] = "0";
            parameters["?profileWantDoMask"] = "0";
            parameters["?profileAboutText"] = String.Empty;
            parameters["?profileFirstText"] = String.Empty;
            parameters["?profileImage"] = LLUUID.Zero.ToString();
            parameters["?profileFirstImage"] = LLUUID.Zero.ToString();
            parameters["?webLoginKey"] = LLUUID.Random().ToString();

            bool returnval = false;

            try
            {
                IDbCommand result = Query(sql, parameters);

                if (result.ExecuteNonQuery() == 1)
                    returnval = true;

                result.Dispose();
            }
            catch (Exception e)
            {
                m_log.Error(e.ToString());
                return false;
            }

            return returnval;
        }


        /// <summary>
        /// Inserts a new region into the database
        /// </summary>
        /// <param name="profile">The region to insert</param>
        /// <returns>Success?</returns>
        public bool insertRegion(RegionProfileData regiondata)
        {
            bool GRID_ONLY_UPDATE_NECESSARY_DATA = false;

            string sql = String.Empty;
            if (GRID_ONLY_UPDATE_NECESSARY_DATA)
            {
                sql += "INSERT INTO ";
            }
            else
            {
                sql += "REPLACE INTO ";
            }

            sql += "regions (regionHandle, regionName, uuid, regionRecvKey, regionSecret, regionSendKey, regionDataURI, ";
            sql +=
                "serverIP, serverPort, serverURI, locX, locY, locZ, eastOverrideHandle, westOverrideHandle, southOverrideHandle, northOverrideHandle, regionAssetURI, regionAssetRecvKey, ";

	    // Added by daTwitch
	    // part of an initial brutish effort to provide accurate information (as per the xml region spec)
	    // wrt the ownership of a given region
	    // the (very bad) assumption is that this value is being read and handled inconsistently or
	    // not at all. Current strategy is to put the code in place to support the validity of this information
	    // and to roll forward debugging any issues from that point
	    //
	    // this particular section of the mod attempts to implement the commit of a supplied value
	    // server for the UUID of the region's owner (master avatar). It consists of the addition of the column and value to the relevant sql,
	    // as well as the related parameterization
            sql +=
                "regionAssetSendKey, regionUserURI, regionUserRecvKey, regionUserSendKey, regionMapTexture, serverHttpPort, serverRemotingPort, owner_uuid) VALUES ";
		// daTwitch


            sql += "(?regionHandle, ?regionName, ?uuid, ?regionRecvKey, ?regionSecret, ?regionSendKey, ?regionDataURI, ";
            sql +=
                "?serverIP, ?serverPort, ?serverURI, ?locX, ?locY, ?locZ, ?eastOverrideHandle, ?westOverrideHandle, ?southOverrideHandle, ?northOverrideHandle, ?regionAssetURI, ?regionAssetRecvKey, ";
            sql +=
                "?regionAssetSendKey, ?regionUserURI, ?regionUserRecvKey, ?regionUserSendKey, ?regionMapTexture, ?serverHttpPort, ?serverRemotingPort, ?owner_uuid)";
		// daTwitch
            if (GRID_ONLY_UPDATE_NECESSARY_DATA)
            {
                sql += "ON DUPLICATE KEY UPDATE serverIP = ?serverIP, serverPort = ?serverPort, serverURI = ?serverURI, owner_uuid - ?owner_uuid;";
		// daTwitch
            }
            else
            {
                sql += ";";
            }

            Dictionary<string, string> parameters = new Dictionary<string, string>();

            parameters["?regionHandle"] = regiondata.regionHandle.ToString();
            parameters["?regionName"] = regiondata.regionName.ToString();
            parameters["?uuid"] = regiondata.UUID.ToString();
            parameters["?regionRecvKey"] = regiondata.regionRecvKey.ToString();
            parameters["?regionSecret"] = regiondata.regionSecret.ToString();
            parameters["?regionSendKey"] = regiondata.regionSendKey.ToString();
            parameters["?regionDataURI"] = regiondata.regionDataURI.ToString();
            parameters["?serverIP"] = regiondata.serverIP.ToString();
            parameters["?serverPort"] = regiondata.serverPort.ToString();
            parameters["?serverURI"] = regiondata.serverURI.ToString();
            parameters["?locX"] = regiondata.regionLocX.ToString();
            parameters["?locY"] = regiondata.regionLocY.ToString();
            parameters["?locZ"] = regiondata.regionLocZ.ToString();
            parameters["?eastOverrideHandle"] = regiondata.regionEastOverrideHandle.ToString();
            parameters["?westOverrideHandle"] = regiondata.regionWestOverrideHandle.ToString();
            parameters["?northOverrideHandle"] = regiondata.regionNorthOverrideHandle.ToString();
            parameters["?southOverrideHandle"] = regiondata.regionSouthOverrideHandle.ToString();
            parameters["?regionAssetURI"] = regiondata.regionAssetURI.ToString();
            parameters["?regionAssetRecvKey"] = regiondata.regionAssetRecvKey.ToString();
            parameters["?regionAssetSendKey"] = regiondata.regionAssetSendKey.ToString();
            parameters["?regionUserURI"] = regiondata.regionUserURI.ToString();
            parameters["?regionUserRecvKey"] = regiondata.regionUserRecvKey.ToString();
            parameters["?regionUserSendKey"] = regiondata.regionUserSendKey.ToString();
            parameters["?regionMapTexture"] = regiondata.regionMapTextureID.ToString();
            parameters["?serverHttpPort"] = regiondata.httpPort.ToString();
            parameters["?serverRemotingPort"] = regiondata.remotingPort.ToString();
	    parameters["?owner_uuid"] = regiondata.owner_uuid.ToString();
	    // daTwitch

            bool returnval = false;

            try
            {
                IDbCommand result = Query(sql, parameters);

                //Console.WriteLine(result.CommandText);
                int x;
                if ((x = result.ExecuteNonQuery()) > 0)
                {
                    returnval = true;
                }
                result.Dispose();
            }
            catch (Exception e)
            {
                m_log.Error(e.ToString());
                return false;
            }

            return returnval;
        }
    }
}