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| 1 | +<?php declare(strict_types=1); |
| 2 | + |
| 3 | +namespace PHPStan\Symfony; |
| 4 | + |
| 5 | +use PHPStan\Reflection\ClassReflection; |
| 6 | +use PHPStan\Reflection\ParametersAcceptorSelector; |
| 7 | +use PHPStan\Reflection\ReflectionProvider; |
| 8 | +use PHPStan\Type\ObjectType; |
| 9 | +use PHPStan\Type\UnionType; |
| 10 | +use Symfony\Component\Messenger\Handler\MessageSubscriberInterface; |
| 11 | + |
| 12 | +// todo add tests |
| 13 | +final class MessageMapFactory |
| 14 | +{ |
| 15 | + /** @var ReflectionProvider */ |
| 16 | + private $reflectionProvider; |
| 17 | + |
| 18 | + /** @var ServiceMap */ |
| 19 | + private $serviceMap; |
| 20 | + |
| 21 | + public function __construct(ServiceMap $symfonyServiceMap, ReflectionProvider $reflectionProvider) |
| 22 | + { |
| 23 | + $this->serviceMap = $symfonyServiceMap; |
| 24 | + $this->reflectionProvider = $reflectionProvider; |
| 25 | + } |
| 26 | + |
| 27 | + public function create(): MessageMap |
| 28 | + { |
| 29 | + $returnTypesMap = []; |
| 30 | + |
| 31 | + foreach ($this->serviceMap->getServices() as $service) { |
| 32 | + $serviceClass = $service->getClass(); |
| 33 | + |
| 34 | + // todo handle abstract/parent services somehow? |
| 35 | + if (is_null($serviceClass)) { |
| 36 | + continue; |
| 37 | + } |
| 38 | + |
| 39 | + foreach ($service->getTags() as $tag) { |
| 40 | + // todo could there be more tags with the same name for the same service? |
| 41 | + // todo check if message handler tag name is constant or configurable |
| 42 | + if ($tag->getName() !== 'messenger.message_handler') { |
| 43 | + continue; |
| 44 | + } |
| 45 | + |
| 46 | + $tagAttributes = $tag->getAttributes(); |
| 47 | + $reflectionClass = $this->reflectionProvider->getClass($serviceClass); |
| 48 | + |
| 49 | + if (isset($tagAttributes['handles'])) { |
| 50 | + $handles = isset($tag['method']) ? [$tag['handles'] => $tag['method']] : [$tag['handles']]; |
| 51 | + } else { |
| 52 | + $handles = $this->guessHandledMessages($reflectionClass); |
| 53 | + } |
| 54 | + |
| 55 | + foreach ($handles as $messageClassName => $options) { |
| 56 | + if (\is_int($messageClassName) && \is_string($options)) { |
| 57 | + $messageClassName = $options; |
| 58 | + $options = []; |
| 59 | + } |
| 60 | + |
| 61 | + $options['method'] = $options['method'] ?? '__invoke'; |
| 62 | + |
| 63 | + $methodReflection = $reflectionClass->getNativeMethod($options['method']); |
| 64 | + $variant = ParametersAcceptorSelector::selectSingle($methodReflection->getVariants()); |
| 65 | + |
| 66 | + $returnTypesMap[$messageClassName][] = $variant->getReturnType(); |
| 67 | + } |
| 68 | + } |
| 69 | + } |
| 70 | + |
| 71 | + $messages = []; |
| 72 | + foreach ($returnTypesMap as $messageClassName => $returnTypes) { |
| 73 | + $messages[] = new Message($messageClassName, $returnTypes); |
| 74 | + } |
| 75 | + |
| 76 | + return new MessageMap($messages); |
| 77 | + } |
| 78 | + |
| 79 | + private function guessHandledMessages(ClassReflection $reflectionClass): iterable |
| 80 | + { |
| 81 | + if ($reflectionClass->implementsInterface(MessageSubscriberInterface::class)) { |
| 82 | + // todo handle different return formats |
| 83 | + return $reflectionClass->getName()::getHandledMessages(); |
| 84 | + } |
| 85 | + |
| 86 | + // todo handle if doesn't exists |
| 87 | + $methodReflection = $reflectionClass->getNativeMethod('__invoke'); |
| 88 | + |
| 89 | + $variant = ParametersAcceptorSelector::selectSingle($methodReflection->getVariants()); |
| 90 | + $parameters = $variant->getParameters(); |
| 91 | + |
| 92 | + if (1 !== count($parameters)) { |
| 93 | + // todo handle error |
| 94 | + throw new \RuntimeException('invalid handler'); |
| 95 | + } |
| 96 | + |
| 97 | + $type = $parameters[0]->getType(); |
| 98 | + |
| 99 | + if ($type instanceof UnionType) { |
| 100 | + $types = []; |
| 101 | + foreach ($type->getTypes() as $type) { |
| 102 | + if (!$type instanceof ObjectType) { |
| 103 | + // todo handle error |
| 104 | + throw new \RuntimeException('invalid handler'); |
| 105 | + } |
| 106 | + |
| 107 | + $types[] = $type->getClassName(); |
| 108 | + } |
| 109 | + |
| 110 | + if ($types) { |
| 111 | + return $types; |
| 112 | + } |
| 113 | + |
| 114 | + // todo handle error |
| 115 | + throw new \RuntimeException('invalid handler'); |
| 116 | + } |
| 117 | + |
| 118 | + if (!$type instanceof ObjectType) { |
| 119 | + throw new \RuntimeException('invalid handler'); |
| 120 | + } |
| 121 | + |
| 122 | + return [$type->getClassName()]; |
| 123 | + } |
| 124 | +} |
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