protected function updateTrending(Item $item)
{
$onehourago = new DateTime();
$onehourago->sub(new \DateInterval('PT1H'));
$q = SellListingQuery::create()->filterByItemId($item->getDataId())->filterByListingDatetime($onehourago, \Criteria::GREATER_THAN)->orderByListingDatetime(\Criteria::ASC);
$oneHourAgoSellListing = $q->findOne();
if (!$oneHourAgoSellListing || $oneHourAgoSellListing->getUnitPrice() <= 0 || $item->getMinSaleUnitPrice() <= 0) {
$item->setSalePriceChangeLastHour(0);
} else {
$item->setSalePriceChangeLastHour(($item->getMinSaleUnitPrice() - $oneHourAgoSellListing->getUnitPrice()) / $oneHourAgoSellListing->getUnitPrice() * 100);
}
$q = BuyListingQuery::create()->filterByItemId($item->getDataId())->filterByListingDatetime($onehourago, \Criteria::GREATER_THAN)->orderByListingDatetime(\Criteria::ASC);
$oneHourAgoBuyListing = $q->findOne();
if (!$oneHourAgoBuyListing || $oneHourAgoBuyListing->getUnitPrice() <= 0 || $item->getMaxOfferUnitPrice() <= 0) {
$item->setOfferPriceChangeLastHour(0);
} else {
$item->setOfferPriceChangeLastHour(($item->getMaxOfferUnitPrice() - $oneHourAgoBuyListing->getUnitPrice()) / $oneHourAgoBuyListing->getUnitPrice() * 100);
}
$item->save();
}