for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php
declare(strict_types=1);
namespace Chemaclass\StockTicker\Domain\Notifier\Policy\Condition;
use Chemaclass\StockTicker\Domain\Notifier\Policy\PolicyConditionInterface;
use Chemaclass\StockTicker\Domain\ReadModel\Company;
final class FoundMoreNews implements PolicyConditionInterface
{
/**
* @var array<string,string>
* For example ['TickerSymbol' => 'datetime']
*/
private static array $cacheOldestDateTimeBySymbol = [];
private string $companyKey;
public function __construct(string $companyKey)
$this->companyKey = $companyKey;
}
public function __invoke(Company $company): bool
$current = $this->findLatestDateTimeFromNews($company);
$previous = self::$cacheOldestDateTimeBySymbol[$company->symbol()->toString()] ?? '';
self::$cacheOldestDateTimeBySymbol[$company->symbol()->toString()] = $current;
return $current > $previous;
private function findLatestDateTimeFromNews(Company $company): string
$reduced = array_reduce(
(array) $company->info($this->companyKey),
static function (?array $carry, array $current): array {
if (null === $carry) {
null === $carry
false
return $current;
return $carry['datetime'] > $current['datetime']
? $carry
: $current;
);
return $reduced['datetime'];
Chemaclass /
stock-ticker
Loading history...