<?php
	include 'config.php';

	// Check if the user is logged in

	if ((!isSet($_SESSION['loginname'])) || ($loggin <> '1')) {
		header("Location: login.php");
		exit;
	}
?>
<?php

	$serial_number_id =(int)$_GET["serial_number_id"];

	$sql = "select * from serial_number where serial_number_id=?";
	if (!($sth = $dbh->prepare($sql))) {
		throw new Exception('[' . $sth->errorCode() . ']: ' . print_r($sth->errorInfo()));
	}

	if (!$sth->execute(array($serial_number_id))) {
		throw new Exception('[' . $sth->errorCode() . ']: ' . print_r($sth->errorInfo()));
	}

	$row = $sth->fetch(PDO::FETCH_ASSOC);

	$series_code = $row{"series_code"};
	$model_code = $row{"model_code"};
	$serial_number = $row{"serial_number"};
	$regoin = $row{"regoin"};

	//check if this model has been record for a warranty
	$sql = "select * from serial_number where region=? and series_code=? and model_code=? and serial_number=? and deleted=?";
	if (!($sth = $dbh->prepare($sql))) {
		throw new Exception('[' . $sth->errorCode() . ']: ' . print_r($sth->errorInfo()));
	}

	if (!$sth->execute(array($regoin,$series_code,$model_code,$serial_number, "0"))) {
		throw new Exception('[' . $sth->errorCode() . ']: ' . print_r($sth->errorInfo()));
	}

	if($sth->rowCount() > 0){
		echo "<script>alert('This model already linked with some customer warranty. You could not modify it.'); history.back();</script>";
		exit;
	}

	// Delete db
	$sql = "update serial_number set deleted = ? WHERE serial_number_id=? ";

	if (!($sth = $dbh->prepare($sql))) {
		throw new Exception('[' . $sth->errorCode() . ']: ' . print_r($sth->errorInfo()));
	}

	if (!$sth->execute(array("1", $serial_number_id))) {
		throw new Exception('[' . $sth->errorCode() . ']: ' . print_r($sth->errorInfo()));
	}else{
		header("Location: serial_number_index.php?msg=Delete Successfully");
	}

	$dbh = null;

?>