<?php
/**
*
* @package Kleeja
* @copyright (c) 2007 Kleeja.com
* @license ./docs/license.txt
*
*/


//no for directly open
if (! defined('IN_COMMON'))
{
    exit();
}  


if (! defined('SQL_LAYER')):

define('SQL_LAYER', 'mysql4');

class SSQL
{
    public $connect_id		= null;		
    public $result;
    public $query_num		    = 0;
    public $in_transaction = 0;
    public $debugr			      = false;
    public $show_errors	   = true;


    /*
     * initiate the class
     * wirth basic data
     */
    public function __construct($host, $db_username, $db_password, $db_name, $new_link=false)
    {
        global $script_encoding;

        $this->host        = $host;
        $this->db_username	= $db_username;
        $this->db_name     = $db_name;
        $this->db_password = 'hidden';

        //no error
        if (defined('MYSQL_NO_ERRORS'))
        {
            $this->show_errors = false;
        }

        $this->connect_id = @mysql_connect($this->host, $this->db_username, $db_password, $new_link) or die($this->error_msg('we can not connect to the server ...'));

        if ($this->connect_id)
        {
            //loggin -> connecting 
            kleeja_log('[Connected] : ' . kleeja_get_page());

            if (! empty($db_name))
            {
                $dbselect = @mysql_select_db($this->db_name) or die($this->error_msg('we can not select database'));

                if ($dbselect)
                {
                    //login -> selecting database 
                    kleeja_log('[Selected Database] :' . $this->connect_id);

                    if ((! preg_match('/utf/i', strtolower($script_encoding)) && ! defined('IN_LOGINPAGE') && ! defined('IN_ADMIN_LOGIN') && ! defined('DISABLE_INTR')) || ((empty($script_encoding) || preg_match('/utf/i', strtolower($script_encoding)) || defined('DISABLE_INTR'))))
                    {
                        if (mysql_query("SET NAMES 'utf8'"))
                        {
                            //loggin -> set utf8 
                            kleeja_log('[Set to UTF8] :' . $this->connect_id);
                        }
                    }
                }
                elseif (! $dbselect)
                {
                    //loggin -> no database -> close connection
                    $this->close($this->connect_id);
                    $this->connect_id = $dbselect;
                }
            }

            return $this->connect_id;
        }
        else
        {
            return false;
        }
    }

    // close the connection
    public function close()
    {
        if ( $this->connect_id )
        {
            // Commit any remaining transactions
            if ( $this->in_transaction )
            {
                mysql_query('COMMIT', $this->connect_id);
            }

            //loggin -> close connection
            kleeja_log('[Closing connection] :' . kleeja_get_page());

            return @mysql_close($this->connect_id);
        }
        else
        {
            return false;
        }
    }

    // encoding functions
    public function set_utf8()
    {
        return $this->set_names('utf8');
    }

    public function set_names($charset)
    {
        @mysql_query("SET NAMES '" . $charset . "'", $this->connect_id);
    }

    public function client_encoding()
    {
        return mysql_client_encoding($this->connect_id);
    }

    public function mysql_version()
    {
        //version of mysql
        $vr = $this->query('SELECT VERSION() AS v');
        $vs = $this->fetch_array($vr);
        $vs = $vs['v'];
        return preg_replace('/^([^-]+).*$/', '\\1', $vs);
    }

    /*
    the query func . its so important to do 
    the quries and give results
    */
    public function query($query, $transaction = false)
    {
        //no connection
        if (! $this->connect_id)
        {
            return false;
        }

        //
        // Remove any pre-existing queries
        //
        unset($this->result);

        if (! empty($query))
        {
            //debug .. //////////////
            $srartum_sql	=	get_microtime();
            ////////////////

            if ( $transaction == 1 && ! $this->in_transaction )
            {
                $result = mysql_query('BEGIN', $this->connect_id);

                if (! $result)
                {
                    return false;
                }

                $this->in_transaction = true;
            }

            $this->result = mysql_query($query, $this->connect_id);

            //debug .. //////////////
            $this->debugr[$this->query_num+1] = [$query, sprintf('%.5f', get_microtime() - $srartum_sql)];
            ////////////////

            if (! $this->result)
            {
                $this->error_msg('Error In query');
            }
            else
            {
                //let's debug it
                kleeja_log('[Query] : --> ' . $query);
            }
        }
        else
        {
            if ( $transaction == 2 && $this->in_transaction )
            {
                $this->result = mysql_query('COMMIT', $this->connect_id);
            }
        }

        //is there any result
        if ($this->result)
        {
            if ($transaction == 2 && $this->in_transaction)
            {
                $this->in_transaction = false;

                if (! mysql_query('COMMIT', $this->connect_id))
                {
                    mysql_query('ROLLBACK', $this->connect_id);
                    return false;
                }
            }

            $this->query_num++;

            return $this->result;
        }
        else
        {
            if ( $this->in_transaction )
            {
                mysql_query('ROLLBACK', $this->connect_id);
                $this->in_transaction = false;
            }
            return false;
        }
    }

    // query build
    public function build($query)
    {
        $sql = '';

        if (isset($query['SELECT']))
        {
            $sql = 'SELECT ' . $query['SELECT'] . ' FROM ' . $query['FROM'];

            if (isset($query['JOINS']))
            {
                foreach ($query['JOINS'] as $cur_join)
                {
                    $sql .= ' ' . key($cur_join) . ' ' . @current($cur_join) . ' ON ' . $cur_join['ON'];
                }
            }

            if (! empty($query['WHERE']))
            {
                $sql .= ' WHERE ' . $query['WHERE'];
            }

            if (! empty($query['GROUP BY']))
            {
                $sql .= ' GROUP BY ' . $query['GROUP BY'];
            }

            if (! empty($query['HAVING']))
            {
                $sql .= ' HAVING ' . $query['HAVING'];
            }

            if (! empty($query['ORDER BY']))
            {
                $sql .= ' ORDER BY ' . $query['ORDER BY'];
            }

            if (! empty($query['LIMIT']))
            {
                $sql .= ' LIMIT ' . $query['LIMIT'];
            }
        }
        elseif (isset($query['INSERT']))
        {
            $sql = 'INSERT INTO ' . $query['INTO'];

            if (! empty($query['INSERT']))
            {
                $sql .= ' (' . $query['INSERT'] . ')';
            }

            $sql .= ' VALUES(' . $query['VALUES'] . ')';
        }
        elseif (isset($query['UPDATE']))
        {
            $query['UPDATE'] = $query['UPDATE'];

            if (isset($query['PARAMS']['LOW_PRIORITY']))
            {
                $query['UPDATE'] = 'LOW_PRIORITY ' . $query['UPDATE'];
            }

            $sql = 'UPDATE ' . $query['UPDATE'] . ' SET ' . $query['SET'];

            if (! empty($query['WHERE']))
            {
                $sql .= ' WHERE ' . $query['WHERE'];
            }
        }
        elseif (isset($query['DELETE']))
        {
            $sql = 'DELETE FROM ' . $query['DELETE'];

            if (! empty($query['WHERE']))
            {
                $sql .= ' WHERE ' . $query['WHERE'];
            }
        }
        elseif (isset($query['REPLACE']))
        {
            $sql = 'REPLACE INTO ' . $query['INTO'];

            if (! empty($query['REPLACE']))
            {
                $sql .= ' (' . $query['REPLACE'] . ')';
            }

            $sql .= ' VALUES(' . $query['VALUES'] . ')';
        }

        return $this->query($sql);
    }

    // free the memmory from the last results
    public function free($query_id = 0)
    {
        return $this->freeresult($query_id);
    }

    public function freeresult($query_id = 0)
    {
        if (! $query_id)
        {
            $query_id = $this->result;
        }

        if ($query_id)
        {
            mysql_free_result($query_id);
            return true;
        }
        else
        {
            return false;
        }
    }

    /*
     * if the result is an arry ,
     * this func is so important to order them as a array
    */
    public function fetch($query_id = 0)
    {
        return $this->fetch_array($query_id);
    }

    public function fetch_array($query_id = 0)
    {
        if ( ! $query_id )
        {
            $query_id = $this->result;
        }

        return $query_id ?  mysql_fetch_array($query_id, MYSQL_ASSOC) : false;
    }

    /*
     * if we have a result and we have to know 
     * the number of it , this is a func ..
     */
    public function num_rows($query_id = 0)
    {
        if ( ! $query_id )
        {
            $query_id = $this->result;
        }

        return $query_id ? mysql_num_rows($query_id) : false;
    }


    // last id inserted in sql
    public function insert_id()
    {
        return ($this->connect_id) ? mysql_insert_id($this->connect_id) : false;
    }

    // clean the qurery before insert it
    public function escape($msg)
    {
        $msg = htmlspecialchars($msg, ENT_QUOTES);
        //$msg = (!get_magic_quotes_gpc()) ? addslashes ($msg) : $msg;
        $msg = $this->real_escape($msg);
        return $msg;
    }

    // real escape ..
    public function real_escape($msg)
    {
        if (is_array($msg))
        {
            return '';
        }
        elseif (function_exists('mysql_real_escape_string'))
        {
            if (! $this-connect_id)
            {
                return 0;
            }
            return mysql_real_escape_string($msg, $this->connect_id);
        }
        else
        {
            // because mysql_escape_string doesnt escape % & _[php.net/mysql_escape_string]
            //return addcslashes(mysql_escape_string($msg),'%_');
            return mysql_escape_string($msg);
        }
    }

    // get affected records
    public function affected()
    {
        return ( $this->connect_id ) ? mysql_affected_rows($this->connect_id) : false;
    }

    // get the information of mysql server
    public function server_info()
    {
        return 'MySQL ' . $this->mysql_version;
    }

    // error message func
    public function error_msg($msg)
    {
        global $dbprefix;

        if (! $this->show_errors)
        {
            return false;
        }

        $error_no  = mysql_errno();
        $error_msg = mysql_error();
        $error_sql = @current($this->debugr[$this->query_num+1]);

        //some ppl want hide their table names, not in develoment stage
        if (! defined('DEV_STAGE'))
        {
            $error_sql = preg_replace("#\s{1,3}`*{$dbprefix}([a-z0-9]+)`*\s{1,3}#e", "' <span style=\"color:blue\">' . substr('$1', 0, 1) . '</span> '", $error_sql);
            $error_msg = preg_replace("#{$this->db_name}.{$dbprefix}([a-z0-9]+)#e", "' <span style=\"color:blue\">' . substr('$1', 0, 1) . '</span> '", $error_msg);
            $error_sql = preg_replace("#\s{1,3}(from|update|into)\s{1,3}([a-z0-9]+)\s{1,3}#ie", "' $1 <span style=\"color:blue\">' . substr('$2', 0, 1) . '</span> '", $error_sql);
            $error_msg = preg_replace("#\s{1,3}(from|update|into)\s{1,3}([a-z0-9]+)\s{1,3}#ie", "' $1 <span style=\"color:blue\">' . substr('$2', 0, 1) . '</span> '", $error_msg);
            $error_msg = preg_replace("#\s'([^']+)'@'([^']+)'#ie", "' <span style=\"color:blue\">hidden</span>@$2 '", $error_msg);
            $error_sql = preg_replace("#password\s*=\s*'[^']+'#i", "password='<span style=\"color:blue\">hidden</span>'", $error_sql);
        }

        //is this error related to updating?
        $updating_related = false;

        if (strpos($error_msg, 'Unknown column') !== false)
        {
            $updating_related = true;
        }

        echo '<html><head><title>ERROR IM MYSQL</title>';
        echo '<style>BODY{FONT-FAMILY:tahoma;FONT-SIZE:12px;}.error {}</style></head><body>';
        echo '<br />';
        echo '<div class="error">';
        echo " <a href='#' onclick='window.location.reload( false );'>click to Refresh this page ...</a><br />";
        echo '<h2>Sorry , There is an error in mysql ' . ($msg !='' ? ", error : $msg" : '') . '</h2>';

        if ($error_sql != '')
        {
            echo "<br />--[query]-------------------------- <br />$error_sql<br />---------------------------------<br /><br />";
        }
        echo "[$error_no : $error_msg] <br />";

        if ($updating_related)
        {
            global $config;
            echo '<br /><strong>Your Kleeja database seems to be old, try to update it now from: ' . $config['siteurl'] . 'install/</strong>';
        }
        echo "<br /><br /><strong>Script: Kleeja <br /><a href='http://www.kleeja.com'>Kleeja Website</a></strong>";
        echo '</b></div>';
        echo '</body></html>';

        //loggin -> error
        kleeja_log('[SQL ERROR] : "' . $error_no . ' : ' . $error_msg . '" ' . $this->connect_id);

        @$this->close();

        exit();
    }

    // return last error
    public function get_error()
    {
        return [mysql_errno(), mysql_error()];
    }
}//end of class

endif;