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<?php |
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namespace Jobtech\LaravelChunky\Strategies; |
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use Illuminate\Container\Container; |
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use Jobtech\LaravelChunky\ChunkySettings; |
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use Jobtech\LaravelChunky\Exceptions\ChunkyException; |
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use Jobtech\LaravelChunky\Exceptions\StrategyException; |
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use Jobtech\LaravelChunky\Strategies\Contracts\StrategyFactory as StrategyFactoryContract; |
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class StrategyFactory implements StrategyFactoryContract |
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{ |
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private static $instance; |
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/** |
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* @var \Jobtech\LaravelChunky\ChunkySettings |
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*/ |
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private ChunkySettings $settings; |
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public function __construct(ChunkySettings $settings) |
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{ |
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$this->settings = $settings; |
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} |
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/** |
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* Returns a new instance for the given strategy class. |
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* |
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* @param string $strategy |
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* |
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* @return mixed |
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*/ |
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private function buildInstance(string $strategy) |
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{ |
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if (! method_exists($strategy, 'instance')) { |
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throw new StrategyException('Cannot instantiate strategy instance'); |
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} |
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return $strategy::instance(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function strategyInstance() |
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{ |
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$default = $this->settings->defaultMergeStrategy(); |
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if ($default === null) { |
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throw new StrategyException('Undefined default strategy'); |
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} |
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return $this->buildInstance($default); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function buildFrom($chunksManager = null, $mergeManager = null) |
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{ |
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$strategy = $this->strategyInstance(); |
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if ($strategy === null) { |
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throw new ChunkyException('Undefined strategy for mime type or no default strategy'); |
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} |
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$strategy->chunksManager($chunksManager); |
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$strategy->mergeManager($mergeManager); |
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return $strategy; |
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} |
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public static function getInstance(): StrategyFactory |
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{ |
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if (static::$instance === null) { |
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static::$instance = Container::getInstance()->make(StrategyFactoryContract::class); |
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} |
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return static::$instance; |
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} |
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} |
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jobtech-dev /
laravel-chunky
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