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| 1 | <?php |
| 2 | namespace Apie\RestApi\EventListeners; |
| 3 | |
| 4 | use Apie\RestApi\Events\OpenApiSchemaGeneratedEvent; |
| 5 | use cebe\openapi\spec\OpenApi; |
| 6 | use cebe\openapi\SpecBaseObject; |
| 7 | use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
| 8 | |
| 9 | class PruneUnusedComponentsSubscriber implements EventSubscriberInterface |
| 10 | { |
| 11 | public static function getSubscribedEvents(): array |
| 12 | { |
| 13 | return [ |
| 14 | OpenApiSchemaGeneratedEvent::class => 'onOpenApiSchemaGenerated', |
| 15 | ]; |
| 16 | } |
| 17 | |
| 18 | public function onOpenApiSchemaGenerated(OpenApiSchemaGeneratedEvent $event): void |
| 19 | { |
| 20 | $openApi = $event->openApi; |
| 21 | |
| 22 | do { |
| 23 | $before = count($openApi->components->schemas ?? []); |
| 24 | |
| 25 | $usedSchemas = $this->collectUsedSchemaRefs($openApi); |
| 26 | $schemas = $openApi->components->schemas ?? []; |
| 27 | |
| 28 | foreach ($schemas as $name => $_schema) { |
| 29 | if (!isset($usedSchemas[$name])) { |
| 30 | unset($schemas[$name]); |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | $openApi->components->schemas = $schemas; |
| 35 | |
| 36 | $after = count($openApi->components->schemas ?? []); |
| 37 | } while ($after !== $before); |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * @return array<string, bool> |
| 42 | */ |
| 43 | private function collectUsedSchemaRefs(OpenApi $openApi): array |
| 44 | { |
| 45 | $used = []; |
| 46 | $queue = []; |
| 47 | |
| 48 | $this->collectRefsFromRoot($openApi, $queue); |
| 49 | |
| 50 | while (!empty($queue)) { |
| 51 | $ref = array_pop($queue); |
| 52 | |
| 53 | if (!str_starts_with($ref, '#/components/schemas/')) { |
| 54 | continue; |
| 55 | } |
| 56 | |
| 57 | $name = substr($ref, strlen('#/components/schemas/')); |
| 58 | $used[$name] = true; |
| 59 | } |
| 60 | |
| 61 | return $used; |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * @param array<int, string> $queue |
| 66 | */ |
| 67 | private function collectRefsFromRoot(OpenApi $openApi, array &$queue): void |
| 68 | { |
| 69 | foreach ($openApi->paths ?? [] as $path) { |
| 70 | foreach ($path->getOperations() as $op) { |
| 71 | $this->collectRefsFromObject($op, $queue); |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | foreach ($openApi->components->parameters ?? [] as $p) { |
| 76 | $this->collectRefsFromObject($p, $queue); |
| 77 | } |
| 78 | |
| 79 | foreach ($openApi->components->requestBodies ?? [] as $rb) { |
| 80 | $this->collectRefsFromObject($rb, $queue); |
| 81 | } |
| 82 | |
| 83 | foreach ($openApi->components->responses ?? [] as $r) { |
| 84 | $this->collectRefsFromObject($r, $queue); |
| 85 | } |
| 86 | |
| 87 | foreach ($openApi->components->schemas ?? [] as $r) { |
| 88 | $this->collectRefsFromObject($r, $queue); |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * @param array<int, string> $queue |
| 94 | */ |
| 95 | private function collectRefsFromObject(mixed $node, array &$queue): void |
| 96 | { |
| 97 | if (is_array($node)) { |
| 98 | foreach ($node as $v) { |
| 99 | $this->collectRefsFromObject($v, $queue); |
| 100 | } |
| 101 | return; |
| 102 | } |
| 103 | if ($node instanceof SpecBaseObject) { |
| 104 | foreach ($node->getSerializableData() as $prop) { |
| 105 | $this->collectRefsFromObject($prop, $queue); |
| 106 | } |
| 107 | return; |
| 108 | } |
| 109 | |
| 110 | if (is_object($node)) { |
| 111 | foreach (get_object_vars($node) as $v) { |
| 112 | $this->collectRefsFromObject($v, $queue); |
| 113 | } |
| 114 | return; |
| 115 | } |
| 116 | |
| 117 | if (is_string($node)) { |
| 118 | if (str_starts_with($node, '#/components/schemas/')) { |
| 119 | $queue[] = $node; |
| 120 | } |
| 121 | } |
| 122 | } |
| 123 | } |