<?php
namespace MailPoet\Features;
if (!defined('ABSPATH')) exit;
use MailPoetVendor\Doctrine\DBAL\Exception\TableNotFoundException;
class FeaturesController {
public const AUTOMATION = 'automation';
// Define feature defaults in the array below in the following form:
// self::FEATURE_NAME_OF_FEATURE => true,
private $defaults = [
self::AUTOMATION => false,
];
/** @var array|null */
private $flags;
/** @var FeatureFlagsRepository */
private $featureFlagsRepository;
public function __construct(
FeatureFlagsRepository $featureFlagsRepository
) {
$this->featureFlagsRepository = $featureFlagsRepository;
}
/** @return bool */
public function isSupported($feature) {
if (!$this->exists($feature)) {
throw new \RuntimeException("Unknown feature '$feature'");
}
// ensure controller works even if used before migrator, return default value in such case
try {
$this->ensureFlagsLoaded();
} catch (TableNotFoundException $e) {
return $this->defaults[$feature];
}
return ($this->flags ?? [])[$feature];
}
/** @return bool */
public function exists($feature) {
return array_key_exists($feature, $this->defaults);
}
/** @return array */
public function getDefaults() {
return $this->defaults;
}
/** @return array */
public function getAllFlags() {
$this->ensureFlagsLoaded();
return $this->flags ?? [];
}
public function resetCache(): void {
$this->flags = null;
}
private function ensureFlagsLoaded() {
if ($this->flags !== null) {
return;
}
$flagsMap = $this->getValueMap();
$this->flags = [];
foreach ($this->defaults as $name => $default) {
$this->flags[$name] = isset($flagsMap[$name]) ? $flagsMap[$name] : $default;
}
}
private function getValueMap() {
$features = $this->featureFlagsRepository->findAll();
$featuresMap = [];
foreach ($features as $feature) {
$featuresMap[$feature->getName()] = (bool)$feature->getValue();
}
return $featuresMap;
}
}