/**
* Generates a GTIN object from given Entity
*
* @param AbstractEntity $entity Entity to generate GTIN for
* @return Gtin GTIN entity object
*/
public static function generate(AbstractEntity $entity)
{
if ($entity instanceof Product) {
try {
$gtin = new Gtin8();
$gtin->setPart(6, $entity->getCompanyPrefix());
$gtin->setPart(1, $entity->getSku());
} catch (ArgumentException $ex) {
$gtin = new Gtin13();
$gtin->setPart(9, $entity->getCompanyPrefix());
$gtin->setPart(3, $entity->getSku());
}
} else {
if ($entity instanceof WeightProduct) {
$gtin = new Gtin13();
$weight = self::toFloat($entity->getWeight());
$decimals = self::getDecimalsCount($weight);
if ($decimals === 0) {
$decimals = 3;
$weight .= '.000';
} else {
$decimals = max(1, min(3, $decimals));
}
$modulator = self::$weight_modulators[$decimals];
$weight = substr(str_replace('.', '', $weight), 0, 4);
$gtin->setPart(2, '2' . $modulator);
$gtin->setPart(6, $entity->getSku());
$gtin->setPart(4, $weight);
} else {
if ($entity instanceof PriceProduct) {
$gtin = new Gtin13();
$price = self::toFloat($entity->getPrice());
$decimals = self::getDecimalsCount($price);
$decimals = max(0, min(2, $decimals));
$modulator = self::$price_modulators[$decimals];
$price = substr(str_replace('.', '', $price), 0, 4);
$gtin->setPart(2, '2' . $modulator);
$gtin->setPart(6, $entity->getSku());
$gtin->setPart(4, $price);
} else {
if ($entity instanceof Publication) {
$gtin = new Gtin13();
$price = self::toFloat($entity->getPrice());
$decimals = self::getDecimalsCount($price);
if ($decimals == 0) {
$price = substr($price, 0, 3) . '0';
} else {
$price = substr(str_replace('.', '', $price), 0, 4);
}
$gtin->setPart(4, '7388');
$gtin->setPart(4, $entity->getSku());
$gtin->setPart(4, $price);
} else {
if ($entity instanceof Coupon) {
$gtin = new Gtin13();
$value = self::toFloat($entity->getValue());
$decimals = self::getDecimalsCount($value);
if ($decimals == 0) {
$value = substr($value, 0, 3) . '0';
} else {
$value = substr(str_replace('.', '', $value), 0, 4);
}
$gtin->setPart(2, '99');
$gtin->setPart(6, $entity->getId());
$gtin->setPart(4, $value);
}
}
}
}
}
return $gtin;
}
