<?php
// include the interface class
require_once(CMS_PATH . 'common/logparser/class.log.processor.php');

// -------------------------
// log_mysql
// 
// mysql class for storing parsed log data in a table
// in my tests, this script processes ~1500-4000 rows/second
// 
// -------------------------
// Example table structure for apache:
// 
// CREATE TABLE `log` (
//   `id` int(11) NOT NULL auto_increment,
//   `ip` varchar(255) NOT NULL default '',
//   `identd` varchar(255) NOT NULL default '',
//   `auth` varchar(255) NOT NULL default '',
//   `day` int(8) NOT NULL default '0',
//   `month` varchar(255) NOT NULL default '',
//   `year` int(8) NOT NULL default '0',
//   `time` varchar(255) NOT NULL default '',
//   `request` text NOT NULL,
//   `http_version` varchar(255) NOT NULL default '',
//   `response_code` int(8) NOT NULL default '0',
//   `size` int(11) NOT NULL default '0',
//   `referrer` text NOT NULL,
//   `navigator` text NOT NULL,
//   PRIMARY KEY  (`id`)
// ) ENGINE=MyISAM DEFAULT CHARSET=latin1
// 
// and the example $fields array to complement it:
// 
// $fields => array(
// // key in $data       field name in table
//   'ip'            => 'ip',
//   'identd'        => 'identd',
//   'auth'          => 'auth',
//   'day'           => 'day',
//   'month'         => 'month',
//   'year'          => 'year',
//   'time'          => 'time',
//   'request'       => 'request',
//   'http_version'  => 'http_version',
//   'response_code' => 'response_code',
//   'size'          => 'size',
//   'referrer'      => 'referrer',
//   'navigator'     => 'navigator'
// );
// 
// -------------------------
class log_mysql implements log_processor {
    // set up the variables
    var $host = 'localhost';
    var $user = 'root';
    var $pass = '';
    var $db = '';
    var $table = '';
    var $maxTimestamp = 0;
    var $start = 0;
    var $end = 50;

    // end set up variables

    // fields
    //
    // this should be an array of key => value to 'translate' the data array
    // keys to mysql fields
    //
    var $fields = array();

    // the mysql connection data
    var $connection = false;

    // counter for rows processed
    var $rows = 0;

    // __construct
    //
    // executed when instatiated
    //
    // $settings is an array that contains the database settings
    // host, user, pass, db and table are all strings relating the mysql database
    // fields should be an array of key => value pairs that are $data['key'] => mysql table field
    //
    final function __construct($settings = array()) {
        // process $settings
        if (!is_array($settings)) {
            throw new Exception('log_mysql $settings should be an array');
        }

        if (isset($settings['table'])) {
            $this->table = $settings['table'];
        }

        if (isset($settings['fields'])) {
            $this->fields = $settings['fields'];
        }

        if (empty($this->fields)) {
            throw new Exception('Missing field data ($this->fields)');
        }

        if (empty($this->table)) {
            throw new Exception('Missing MySQL table name');
        }

        $this->maxTimestamp = $settings['maxTimestamp'];
        $this->start = $settings['start'];
        $this->end = $settings['end'];

        // end process $settings

        // connect to the database
        // $this->connect();

        // don't need to return anything, we're getting the object anyway
    }

    // process
    //
    // the function called by the log class
    //
    // $data is the array of data from the parsed log
    //
    final function process($data) {
        // try and insert the data
        if ($this->insert($data)) {
            // if it's worked, increment the $rows counter
            $this->rows++;

            // return true for good measure
            return true;

            // if not...
        } else {
            // throw an exception
            throw new Exception('Error inserting data to MySQL server');
        }
    }

    // connect
    //
    // connect to the mysql database
    //
    private function connect() {
        // set $this->connection to the mysql server connection
        $this->connection = mysqli_connect($GLOBALS['mysql_con'],$this->host, $this->user, $this->pass);

        // if we connected ok...
        if ($this->connection) {
            // try to select the database
            if (mysqli_select_db($GLOBALS['mysql_con'],$this->db, $this->connection)) {
                // ... again for good measure...
                return true;

                // if something went wrong
            } else {
                // throw an exception
                throw new Exception('Unable to select database ('.$this->db.')');
            }

            // if something went wrong
        } else {
            // throw an exception
            throw new Exception('Unable to connect to MySQL server');
        }
    }

    // insert
    //
    // inserts the data to the mysql table
    //
    // $data is the array passed from process
    //
    private function insert($data) {
        // build the query
        $q = "INSERT INTO
      `{$this->table}`
    SET ";

        // add each set to an array, for easy string concatenation
        $sets = array();

        // loop through the fields
        foreach ($this->fields as $name => $field) {
            // escape the data
            $data[$name] = mysqli_real_escape_string($GLOBALS['mysql_con'],$data[$name]);
            $field = mysqli_real_escape_string($GLOBALS['mysql_con'],$field);

            // add it to the array
            $sets[] = "`{$field}` = '{$data[$name]}'";
        }

        // implode the array
        $q .= implode(', ', $sets);

        // finish the query building
        $q .= ';';
        // execute the query
        $result = mysqli_query($GLOBALS['mysql_con'],$q);

        // return the result
        return $result;
    }
}