/*
 * 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 OpenSimulator 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;
using System.Collections.Generic;
using System.Data;
using OpenMetaverse;
using OpenSim.Framework;
using System.Data.SqlClient;
using System.Text;

namespace OpenSim.Data.MSSQL
{
    public class MSSQLUserAccountData : MSSQLGenericTableHandler<UserAccountData>,IUserAccountData
    {
        public MSSQLUserAccountData(string connectionString, string realm) :
            base(connectionString, realm, "UserAccount")
        {
        }
        //private string m_Realm;
        //private List<string> m_ColumnNames = null;
        //private MSSQLManager m_database;

        //public MSSQLUserAccountData(string connectionString, string realm)
        //{
        //    m_Realm = realm;
        //    m_ConnectionString = connectionString;
        //    m_database = new MSSQLManager(connectionString);

        //    using (SqlConnection conn = new SqlConnection(m_ConnectionString))
        //    {
        //        conn.Open();
        //        Migration m = new Migration(conn, GetType().Assembly, "UserStore");
        //        m.Update();
        //    }
        //}

        //public List<UserAccountData> Query(UUID principalID, UUID scopeID, string query)
        //{
        //    return null;
        //}

        //public UserAccountData Get(UUID principalID, UUID scopeID)
        //{
        //    UserAccountData ret = new UserAccountData();
        //    ret.Data = new Dictionary<string, string>();

        //    string sql = string.Format("select * from {0} where UUID = @principalID", m_Realm);
        //    if (scopeID != UUID.Zero)
        //        sql += " and ScopeID = @scopeID";

        //    using (SqlConnection conn = new SqlConnection(m_ConnectionString))
        //    using (SqlCommand cmd = new SqlCommand(sql, conn))
        //    {
        //        cmd.Parameters.Add(m_database.CreateParameter("@principalID", principalID));
        //        cmd.Parameters.Add(m_database.CreateParameter("@scopeID", scopeID));
                
        //        conn.Open();
        //        using (SqlDataReader result = cmd.ExecuteReader())
        //        {
        //            if (result.Read())
        //            {
        //                ret.PrincipalID = principalID;
        //                UUID scope;
        //                UUID.TryParse(result["ScopeID"].ToString(), out scope);
        //                ret.ScopeID = scope;

        //                if (m_ColumnNames == null)
        //                {
        //                    m_ColumnNames = new List<string>();

        //                    DataTable schemaTable = result.GetSchemaTable();
        //                    foreach (DataRow row in schemaTable.Rows)
        //                        m_ColumnNames.Add(row["ColumnName"].ToString());
        //                }

        //                foreach (string s in m_ColumnNames)
        //                {
        //                    if (s == "UUID")
        //                        continue;
        //                    if (s == "ScopeID")
        //                        continue;

        //                    ret.Data[s] = result[s].ToString();
        //                }
        //                return ret;
        //            }
        //        }
        //    }
        //    return null;
        //}

        //public bool Store(UserAccountData data)
        //{
        //    if (data.Data.ContainsKey("UUID"))
        //        data.Data.Remove("UUID");
        //    if (data.Data.ContainsKey("ScopeID"))
        //        data.Data.Remove("ScopeID");

        //    string[] fields = new List<string>(data.Data.Keys).ToArray();

        //    using (SqlConnection conn = new SqlConnection(m_ConnectionString))
        //    using (SqlCommand cmd = new SqlCommand())
        //    {
        //        StringBuilder updateBuilder = new StringBuilder();
        //        updateBuilder.AppendFormat("update {0} set ", m_Realm);
        //        bool first = true;
        //        foreach (string field in fields)
        //        {
        //            if (!first)
        //                updateBuilder.Append(", ");
        //            updateBuilder.AppendFormat("{0} = @{0}", field);

        //            first = false;
        //            cmd.Parameters.Add(m_database.CreateParameter("@" + field, data.Data[field]));
        //        }

        //        updateBuilder.Append(" where UUID = @principalID");

        //        if (data.ScopeID != UUID.Zero)
        //            updateBuilder.Append(" and ScopeID = @scopeID");

        //        cmd.CommandText = updateBuilder.ToString();
        //        cmd.Connection = conn;
        //        cmd.Parameters.Add(m_database.CreateParameter("@principalID", data.PrincipalID));
        //        cmd.Parameters.Add(m_database.CreateParameter("@scopeID", data.ScopeID));
        //        conn.Open();

        //        if (cmd.ExecuteNonQuery() < 1)
        //        {
        //            StringBuilder insertBuilder = new StringBuilder();
        //            insertBuilder.AppendFormat("insert into {0} (UUID, ScopeID, ", m_Realm);
        //            insertBuilder.Append(String.Join(", ", fields));
        //            insertBuilder.Append(") values (@principalID, @scopeID, @");
        //            insertBuilder.Append(String.Join(", @", fields));
        //            insertBuilder.Append(")");

        //            cmd.CommandText = insertBuilder.ToString();

        //            if (cmd.ExecuteNonQuery() < 1)
        //            {
        //                return false;
        //            }
        //        }
        //    }
        //    return true;
        //}

        //public bool Store(UserAccountData data, UUID principalID, string token)
        //{
        //    return false;
        //}

        //public bool SetDataItem(UUID principalID, string item, string value)
        //{
        //    string sql = string.Format("update {0} set {1} = @{1} where UUID = @UUID", m_Realm, item);
        //    using (SqlConnection conn = new SqlConnection(m_ConnectionString))
        //    using (SqlCommand cmd = new SqlCommand(sql, conn))
        //    {
        //        cmd.Parameters.Add(m_database.CreateParameter("@" + item, value));
        //        cmd.Parameters.Add(m_database.CreateParameter("@UUID", principalID));

        //        conn.Open();

        //        if (cmd.ExecuteNonQuery() > 0)
        //            return true;
        //    }
        //    return false;
        //}

        //public UserAccountData[] Get(string[] keys, string[] vals)
        //{
        //    return null;
        //}

        public UserAccountData[] GetUsers(UUID scopeID, string query)
        {
            string[] words = query.Split(new char[] { ' ' });

            for (int i = 0; i < words.Length; i++)
            {
                if (words[i].Length < 3)
                {
                    if (i != words.Length - 1)
                        Array.Copy(words, i + 1, words, i, words.Length - i - 1);
                    Array.Resize(ref words, words.Length - 1);
                }
            }

            if (words.Length == 0)
                return new UserAccountData[0];

            if (words.Length > 2)
                return new UserAccountData[0];

            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
            using (SqlCommand cmd = new SqlCommand())
            {
                if (words.Length == 1)
                {
                    cmd.CommandText = String.Format("select * from {0} where ([ScopeID]=@ScopeID or [ScopeID]='00000000-0000-0000-0000-000000000000') and ([FirstName] like @search or [LastName] like @search)", m_Realm);
                    cmd.Parameters.Add(m_database.CreateParameter("@scopeID", scopeID));
                     cmd.Parameters.Add(m_database.CreateParameter("@search", "%" + words[0] + "%"));
                }
                else
                {
                    cmd.CommandText = String.Format("select * from {0} where ([ScopeID]=@ScopeID or [ScopeID]='00000000-0000-0000-0000-000000000000') and ([FirstName] like @searchFirst or [LastName] like @searchLast)", m_Realm);
                     cmd.Parameters.Add(m_database.CreateParameter("@searchFirst", "%" + words[0] + "%"));
                     cmd.Parameters.Add(m_database.CreateParameter("@searchLast", "%" + words[1] + "%"));
                     cmd.Parameters.Add(m_database.CreateParameter("@ScopeID", scopeID.ToString()));
                }

                return DoQuery(cmd);
            }
        }
    }
}