<?php
/* By Sam Jesso - sam@bike-this.com
 * File:        oceansql.php
 * License:     GNU GPL.
 * Type:        PHP
 * Description: A MySQL (PHP 4 mysql_*) wrapper that makes queries visually easier to follow, execute, and debug. */

defined("SYSTEM") or die("Access denied.");
class MySQL
{
    private $query, $queryData, $whereCount = 0;
    public $numQueries;
    public function __construct($user, $pass, $db, $host = "localhost")
    {
        $conn = mysql_connect($host, $user, $pass) or die(mysql_error());
        mysql_select_db($db, $conn) or die(mysql_error());
        return $this;
    }
    public function __destruct()
    {
        mysql_close();
    }
    public function __toString()
    {
        return (string) $this->numQueries;
    }
    public function select($from, $fields = array())
    {
        if(count($fields) > 0)
        {
            $fieldstr = "";
            foreach($fields as $key => $value)
                $fieldstr.= (is_numeric($key)) ? ", {$value}" : ", {$key} AS {$value}";

            $fieldstr = substr($fieldstr, 2);
        }
        else
        {
            $fieldstr = "*";
        }
        $this->query.= "SELECT {$fieldstr} FROM {$from} ";
        return $this;
    }
    public function query($query)
    {
        $this->queryData = mysql_query($query) or die(mysql_error());
        $this->numQueries++;
        return $this;
    }
    public function rawquery($query)
    {
        $this->numQueries++;
        return mysql_query($query);
    }
    public function update($table)
    {
        $this->query.= "UPDATE {$table} ";
        return $this;
    }
    public function set($settings = array())
    {
        $this->query.= "SET ";
        $set = "";
        foreach($settings as $key => $value)
            $set.= ", {$key} = '{$value}'";

        $set = substr($set, 2);
        $this->query.= $set." ";
        return $this;
    }
    public function delete($from)
    {
        $this->query.= "DELETE FROM {$from} ";
        return $this;
    }
    public function insert($into)
    {
        $this->query.= "INSERT INTO {$into} ";
        return $this;
    }
    public function values($array)
    {
        $keys = "";
        $values = "";
        foreach($array as $key => $value)
        {
            $keys.= ", {$key}";
            $values.= ", '{$value}'";
        }
        $keys = substr($keys, 2);
        $values = substr($values, 2);
        $this->query.= "({$keys}) VALUES ({$values}) ";
        return $this;
    }
    public function join($table, $on = array(), $type = "AND")
    {
        $this->query.= "INNER JOIN {$table} ";
        if(count($on) > 0)
        {
            $where = "";
            $this->query.= "ON ";
            foreach($on as $key => $value)
            {
                $where.= " {$type} {$key} = {$value}";
            }
            $where = ($type == "AND") ? substr($where, 5)." " : substr($where, 4)." ";
            $this->query.= $where;
        }
        return $this;
    }
    public function where($args = array(), $type = "AND")
    {
        $where = "";
        foreach($args as $key => $value)
        {
            $where.= ($this->whereCount == 0) ? "WHERE {$key} = '{$value}' " : "{$type} {$key} = '{$value}' ";
            $this->whereCount++;
        }
        $this->query.= $where;
        return $this;
    }
    public function search($args = array(), $type = "AND")
    {
        $where = "";
        foreach($args as $key => $value)
        {
            $where.= ($this->whereCount == 0) ? "WHERE {$key} LIKE '%{$value}%' " : "{$type} {$key} LIKE '%{$value}%' ";
            $this->whereCount++;
        }
        $this->query.= $where;
        return $this;
    }
    public function order($by, $type = "DESC")
    {
        if(strtoupper($by) == "RAND")
        {
            $type = "";
            $by = "RAND()";
        }
        else
        {
            $type = ($type == "DESC") ? " DESC" : " ASC";
        }
        $this->query.= "ORDER BY {$by}{$type} ";
        return $this;
    }
    public function limit($start, $finish = NULL)
    {
        $limit = "LIMIT {$start} ";
        if($finish)
            $limit.= substr($limit, 0, -1).",{$finish} ";

        $this->query.= $limit;
        return $this;
    }
    public function execute()
    {
        $this->numQueries++;
        $this->whereCount = 0;
        $this->query = substr($this->query, 0, -1);
        $this->queryData = mysql_query($this->query) or die(mysql_error());
        $this->query = "";
        return $this;
    }
    public function fetch($as = "object")
    {
        return ($as == "object") ? mysql_fetch_object($this->queryData) : mysql_fetch_array($this->queryData);
    }
    public function results()
    {
        return mysql_num_rows($this->queryData);
    }
    public function debug($html = true) {
        $info = array(
            "Number of queries executed" => $this->numQueries,
            "Current query in queue" => $this->query
        );
        if($html)
        {
            foreach($info as $key => $value)
                echo "<strong>$key:</strong> $value<br />";
        }
        else
        {
            print_r($info);
        }
    }
    public function clear()
    {
        $this->query = "";
        $this->queryData = "";
        $this->whereCount = 0;
        return true;
    }
}