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<?php |
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namespace W2w\Lib\Apie\Core; |
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use Generator; |
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use Throwable; |
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use W2w\Lib\Apie\Apie; |
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use W2w\Lib\Apie\Exceptions\BadConfigurationException; |
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use W2w\Lib\Apie\Exceptions\NotAnApiePluginException; |
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/** |
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* Helper method to get all plugins with certain properties. |
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* |
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* @internal |
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*/ |
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final class PluginContainer |
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{ |
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private $plugins; |
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private $mapping = []; |
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public function __construct(array $plugins) |
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{ |
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foreach ($plugins as $plugin) { |
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if (!is_object($plugin)) { |
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throw new NotAnApiePluginException($plugin); |
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} |
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$interfaces = class_implements($plugin); |
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foreach ($interfaces as $interface) { |
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if (strpos($interface, 'W2w\Lib\Apie\PluginInterfaces') === 0) { |
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continue(2); |
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} |
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} |
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throw new NotAnApiePluginException($plugin); |
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} |
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$this->plugins = $plugins; |
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} |
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/** |
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* Returns all plugins with a specific interface. |
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* |
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* @param string $interface |
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* @return array |
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*/ |
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public function getPluginsWithInterface(string $interface): array |
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{ |
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if (!isset($this->mapping[$interface])) { |
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$res = []; |
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foreach ($this->plugins as $plugin) { |
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if ($plugin instanceof $interface) { |
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$res[] = $plugin; |
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} |
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} |
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$this->mapping[$interface] = $res; |
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} |
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return $this->mapping[$interface]; |
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} |
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/** |
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* Returns plugin instance. |
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* |
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* @param string $pluginClass |
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* @return object |
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*/ |
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public function getPlugin(string $pluginClass): object |
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{ |
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$last = null; |
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foreach ($this->plugins as $plugin) { |
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if ($plugin instanceof $pluginClass) { |
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return $plugin; |
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} |
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$last = $plugin; |
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} |
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if ($last instanceof Apie) { |
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return $last->getPlugin($pluginClass); |
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} |
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throw new BadConfigurationException('Plugin ' . $pluginClass . ' not found!'); |
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} |
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/** |
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* Returns first plugin or throw error. |
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* |
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* @param string $interface |
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* @param Throwable $error |
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* @return object |
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*/ |
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public function first(string $interface, ?Throwable $error): ?object |
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{ |
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$plugins = $this->getPluginsWithInterface($interface); |
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if (empty($plugins)) { |
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if ($error) { |
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throw $error; |
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} |
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return null; |
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} |
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return reset($plugins); |
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} |
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/** |
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* Iterate over all plugins with a specific interface with a callback. |
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* |
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* @param string $interface |
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* @param callable $callback |
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* @return array |
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*/ |
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public function each(string $interface, callable $callback) |
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{ |
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return array_map($callback, $this->getPluginsWithInterface($interface)); |
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} |
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/** |
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* Merge the results of a getter in a list of plugins into a single array. |
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* |
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* @param string $interface |
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* @param string $getterMethod |
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* @return array |
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*/ |
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public function merge(string $interface, string $getterMethod): array |
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{ |
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$res = []; |
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foreach ($this->getPluginsWithInterface($interface) as $plugin) { |
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$res = array_merge($res, $plugin->$getterMethod()); |
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} |
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return $res; |
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} |
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/** |
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* Iterate over a getter of a list of plugins and return all return values in a generator. |
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* |
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* @param string $interface |
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* @param string $getterMethod |
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* @return Generator |
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*/ |
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public function combine(string $interface, string $getterMethod): Generator |
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{ |
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foreach ($this->getPluginsWithInterface($interface) as $plugin) { |
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yield $plugin->$getterMethod(); |
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} |
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} |
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} |
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