<?
class PDOConnection {

    public $db;

    public function __construct() {
//        $db_type = 'mysql';  //ex) mysql, postgresql, oracle
//        $db_name = 'atwork';
//        $user = 'atwork';
//        $password = 'idea123';
//        $host = 'localhost';
//        try {
//            $dsn = "$db_type:host=$host;dbname=$db_name";
//            $this->db = new PDO($dsn, $user, $password);
//            $this->db->setAttribute(PDO::ATTR_PERSISTENT, true);
//            $this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
//            //return $this->db;
//        } catch (PDOException $e) {
//            print "Error!: " . $e->getMessage() . "\n";
//            die ();
//        }
    }
    public function connect($db_type,$host,$db_name,$user,$password) {
        try {
            $dsn = "$db_type:host=$host;dbname=$db_name";
            $this->db = new PDO($dsn, $user, $password);
            $this->db->setAttribute(PDO::ATTR_PERSISTENT, true);
            $this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
            //return $this->db;
        } catch (PDOException $e) {
            print "Error!: " . $e->getMessage() . "\n";
            die ();
        }
    }
    public function __deconstruct() {
        $this->db = null;
    }

    public function nativeQuerySelect($sql, $parameter) {
        try {
            $utf8sql = "SET NAMES UTF8";
            $this->db->query($utf8sql);
            $stmt = $this->db->prepare($sql);
            if (count($parameter) > 0) {
                for ($i = 0; $i < count($parameter); $i++) {
                    $stmt->bindParam($i + 1, $parameter[$i]);
                }
            }
            $res = $stmt->execute();
            return $stmt->fetchAll(PDO::FETCH_BOTH);
        } catch (PDOException $e) {
            throw new PDOException('Query error :' . $e->getMessage());
        }
    }

    /* return number of affected rows  */

    public function nativeQueryInsert($sql, $parameter) {
        try {
            $utf8sql = "SET NAMES UTF8";
            $this->db->query($utf8sql);
            $stmt = $this->db->prepare($sql);
            if (count($parameter) > 0) {
                for ($i = 0; $i < count($parameter); $i++) {
                    $stmt->bindParam($i + 1, $parameter[$i]);
                }
            }
            $res = $stmt->execute();
            return $res;
        } catch (PDOException $e) {
            throw new PDOException('Query error :' . $e->getMessage());
        }
    }

    /* return number of affected rows  */

    public function nativeQueryUpdate($sql, $parameter) {
        try {
            $utf8sql = "SET NAMES UTF8";
            $this->db->query($utf8sql);
            $stmt = $this->db->prepare($sql);
            if (count($parameter) > 0) {
                for ($i = 0; $i < count($parameter); $i++) {
                    $stmt->bindParam($i + 1, $parameter[$i]);
                }
            }
            $res = $stmt->execute();
            return $res == null ? false : true;
        } catch (PDOException $e) {
            throw new PDOException('Query error :' . $e->getMessage());
        }
    }

    public function nativeQueryDelete($sql, $parameter) {
        try {
            $stmt = $this->db->prepare($sql);
            if (count($parameter) > 0) {
                for ($i = 0; $i < count($parameter); $i++) {
                    $stmt->bindParam($i + 1, $parameter[$i]);
                }
            }
            $stmt->execute();
            return true;
        } catch (PDOException $e) {
            return false;
        }
    }

    public function isUniqueNative($sql, $parameter) {
        try {
            $stmt = $this->db->prepare($sql);
            if (count($parameter) > 0) {
                for ($i = 0; $i < count($parameter); $i++) {
                    $stmt->bindParam($i + 1, $parameter[$i]);
                }
            }
            $stmt->execute();
            $found = 0;
            foreach ($stmt->fetchAll(PDO::FETCH_ASSOC) as $row) {
                $found++;
            }
            return $found == 0 ? true : false;
        } catch (PDOException $e) {
            throw new PDOException('Query error :' . $e->getMessage());
        }
    }

    public function countRow($tableName, $condition) {
        try {
            echo $this->qCountRow . $condition;
            $stmt = $this->db->prepare($this->qCountRow . $condition);
            $stmt->bindParam(':table', $tableName);
            $stmt->execute();
            $row = $stmt->fetch(PDO::FETCH_BOTH);
            return $row['total'];
        } catch (PDOException $e) {
            throw new PDOException('Database error details: ' . $e->getMessage());
            return -1;
        }
    }

    public function insertAdminLog($arrValue) {//table(id int11,date datetime,log text)
        try {
            $sql = "INSERT INTO admin_log VALUES('',:val1,:val2)";
            $stmt = $this->db->prepare($sql);
            $logDetail = $_SERVER['REMOTE_ADDR'] . "|";
            if (count($arrValue) > 0) {
                for ($i = 0; $i < count($arrValue); $i++) {
                    $logDetail .= $arrValue[$i] . "|";
                }
            }
            $stmt->bindParam(':val1', date('Y-m-d h:i:s'));
            $stmt->bindParam(':val2', $logDetail);
            $stmt->execute();
        } catch (PDOException $e) {
            throw new PDOException('Database error ' . $e->getMessage());
        }
    }

}

?>