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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | /** |
| 6 | * This file is part of php-fast-forward/container. |
| 7 | * |
| 8 | * This source file is subject to the license bundled |
| 9 | * with this source code in the file LICENSE. |
| 10 | * |
| 11 | * @copyright Copyright (c) 2025-2026 Felipe Sayão Lobato Abreu <github@mentordosnerds.com> |
| 12 | * @license https://opensource.org/licenses/MIT MIT License |
| 13 | * |
| 14 | * @see https://github.com/php-fast-forward/container |
| 15 | * @see https://github.com/php-fast-forward |
| 16 | * @see https://datatracker.ietf.org/doc/html/rfc2119 |
| 17 | */ |
| 18 | |
| 19 | namespace FastForward\Container\ServiceProvider; |
| 20 | |
| 21 | use FastForward\Container\Exception\RuntimeException; |
| 22 | use FastForward\Container\Factory\ServiceFactory; |
| 23 | use Interop\Container\ServiceProviderInterface; |
| 24 | use Psr\Container\ContainerInterface; |
| 25 | |
| 26 | use function DI\string; |
| 27 | |
| 28 | /** |
| 29 | * Aggregates multiple service providers into a single provider. |
| 30 | * |
| 31 | * This class MUST be used to compose a unified list of factories and extensions |
| 32 | * from several ServiceProviderInterface implementations. |
| 33 | * |
| 34 | * Factories and extensions returned by this class are merged in registration order. |
| 35 | */ |
| 36 | class AggregateServiceProvider implements ServiceProviderInterface |
| 37 | { |
| 38 | /** |
| 39 | * @var ServiceProviderInterface[] list of service providers to aggregate |
| 40 | */ |
| 41 | private array $serviceProviders; |
| 42 | |
| 43 | /** |
| 44 | * Constructs the AggregateServiceProvider. |
| 45 | * |
| 46 | * @param ServiceProviderInterface ...$serviceProviders One or more service providers to aggregate. |
| 47 | */ |
| 48 | public function __construct(ServiceProviderInterface ...$serviceProviders) |
| 49 | { |
| 50 | $this->serviceProviders = $serviceProviders; |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Retrieves all service factories from aggregated providers. |
| 55 | * |
| 56 | * This method merges the factories from each service provider into a single array. |
| 57 | * The factory for this class itself is added under the key of its class name. |
| 58 | * |
| 59 | * @return array<string, callable> an associative array of service factories |
| 60 | */ |
| 61 | public function getFactories(): array |
| 62 | { |
| 63 | $serviceProviders = array_reduce( |
| 64 | $this->serviceProviders, |
| 65 | static fn(array $carry, ServiceProviderInterface $provider): array => $carry + [ |
| 66 | $provider::class => new ServiceFactory($provider), |
| 67 | ], |
| 68 | [ |
| 69 | static::class => new ServiceFactory($this), |
| 70 | ], |
| 71 | ); |
| 72 | |
| 73 | return array_reduce( |
| 74 | $this->serviceProviders, |
| 75 | static fn($factories, $serviceProvider): array => array_merge($factories, $serviceProvider->getFactories()), |
| 76 | $serviceProviders, |
| 77 | ); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Retrieves all service extensions from aggregated providers. |
| 82 | * |
| 83 | * This method merges extensions from each provider. If multiple extensions exist for |
| 84 | * the same service ID, they are composed in the order they are added using nested closures. |
| 85 | * |
| 86 | * @return array<string, callable> an associative array of service extensions |
| 87 | * |
| 88 | * @throws \RuntimeException if any extension is not callable |
| 89 | */ |
| 90 | public function getExtensions(): array |
| 91 | { |
| 92 | return array_reduce( |
| 93 | $this->serviceProviders, |
| 94 | static function (array $extensions, ServiceProviderInterface $serviceProvider): array { |
| 95 | foreach ($serviceProvider->getExtensions() as $id => $extension) { |
| 96 | if (! \is_callable($extension)) { |
| 97 | throw RuntimeException::forNonCallableExtension($id, get_debug_type($extension)); |
| 98 | } |
| 99 | |
| 100 | $extensions[$id] = \array_key_exists($id, $extensions) |
| 101 | ? static fn(ContainerInterface $container, $previous) => $extension( |
| 102 | $container, |
| 103 | $extensions[$id]($container, $previous) |
| 104 | ) |
| 105 | : $extension; |
| 106 | } |
| 107 | |
| 108 | return $extensions; |
| 109 | }, |
| 110 | [] |
| 111 | ); |
| 112 | } |
| 113 | } |