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<?php |
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/** |
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* (c) 2018 Douglas Reith. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Reith\ToyRobot\Infrastructure\Persistence; |
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use Psr\Log\LoggerInterface; |
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use Reith\ToyRobot\Domain\Robot\Robot; |
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/** |
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* Class: InMemoryRobotStore |
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* |
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* This store is used in testing scenarios. Though if we implement an |
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* interactive mode, then we could use this instead of FileRobotStore. |
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* |
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* @see RobotStoreInterface |
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*/ |
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class InMemoryRobotStore implements RobotStoreInterface |
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{ |
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private static $store; |
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private $logger; |
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private $robot; |
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/** |
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* __construct. |
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* |
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* @param LoggerInterface|null $logger |
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*/ |
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private function __construct(?LoggerInterface $logger = null) |
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{ |
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$this->logger = $logger; |
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} |
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/** |
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* @param LoggerInterface|null $logger |
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* |
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* @return RobotStoreInterface |
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*/ |
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public static function getStore(?LoggerInterface $logger = null): RobotStoreInterface |
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{ |
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// Ensure the same store is used everywhere |
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if (!self::$store) { |
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self::$store = self::createStore($logger); |
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} |
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return self::$store; |
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} |
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/** |
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* @param LoggerInterface|null $logger |
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* |
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* @return RobotStoreInterface |
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*/ |
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private static function createStore(?LoggerInterface $logger): RobotStoreInterface |
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{ |
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return new static($logger); |
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} |
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/** |
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* @return Robot|null |
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*/ |
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public function getRobot(): ?Robot |
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{ |
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return $this->robot; |
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} |
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/** |
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* @param Robot $robot |
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*/ |
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public function saveRobot(Robot $robot): void |
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{ |
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$this->robot = $robot; |
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$this->log('Saved robot'); |
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} |
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/** |
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* @param string $msg |
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*/ |
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private function log(string $msg): void |
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{ |
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if (!$this->logger) { |
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return; |
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} |
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$this->logger->info($msg); |
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} |
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} |
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