<?phpnamespaceApp\Validator;useApp\Service\WorkflowService;useSymfony\Component\Workflow\Definition;useSymfony\Component\Workflow\Exception\InvalidDefinitionException;useSymfony\Component\Workflow\Validator\DefinitionValidatorInterface;class WorkflowValidatorimplements DefinitionValidatorInterface{privateconstVALID_PLACE_TYPES = ['Information','UserChoice','Print','Modification','ChooseRepair','DoneRepair','ReasonAndPhoto','Photo','ProductInformation','Conditional','Final',    ];publicfunctionvalidate(Definition$definition,string$name):void    {$metadataStore =$definition->getMetadataStore();foreach ($definition->getPlaces()as$place) {$transitions =$this->getForwardTransitionsByPlace($definition,$place);$placeMetadata =$metadataStore->getPlaceMetadata($place);if (!key_exists('type',$placeMetadata)) {thrownewInvalidDefinitionException(sprintf('[%s] place "%s" has no type - %s',$name,$place,json_encode($placeMetadata)));            }if (!\in_array($placeMetadata['type'],self::VALID_PLACE_TYPES,true)) {thrownewInvalidDefinitionException(sprintf('[%s] place "%s" has a unknow type "%s"',$name,$place,$placeMetadata['type']));            }switch ($placeMetadata['type']) {case'Information':case'Modification':case'ChooseRepair':case'ReasonAndPhoto':case'Photo':case'Print':if (\count($transitions) !==1) {thrownewInvalidDefinitionException(sprintf('workflow: "%s" place "%s" of type "%s" should have one outgoing transitions. found: "%s"',$name,$place,$placeMetadata['type'],$this->display($transitions)));                    }break;case'UserChoice':if (\count($transitions) ===0) {thrownewInvalidDefinitionException(sprintf('workflow: "%s" place "%s" of type "%s" should have at least one outgoing transition.',$name,$place,$placeMetadata['type']));                    }foreach ($transitionsas$transition) {$transitionMeta =$metadataStore->getTransitionMetadata($transition);if (!\array_key_exists('text',$transitionMeta)) {thrownewInvalidDefinitionException(sprintf('workflow: "%s" transition "%s" should have a text',$name,$transition->getName()));                        }if (!\array_key_exists('type',$transitionMeta)) {thrownewInvalidDefinitionException(sprintf('workflow: "%s" transition "%s" should have a type',$name,$transition->getName()));                        }                    }break;case'Conditional':if (\count($transitions) ===0) {thrownewInvalidDefinitionException(sprintf('workflow: "%s" place "%s" of type "%s" should have at least one outgoing transition.',$name,$place,$placeMetadata['type']));                    }break;            }        }    }privatefunctiongetForwardTransitionsByPlace(Definition$definition,string$place):array    {returnarray_filter($definition->getTransitions(),function ($transition)use ($place) {return\in_array($place,$transition->getFroms(),true) &&$transition->getName() !== WorkflowService::CANCEL_TRANSITION;        });    }privatefunctiondisplay(array$transitions):string    {returnimplode(',',array_map(function ($transition) {return$transition->getName();        },$transitions));    }}

class Kernelextends BaseKernelimplements CompilerPassInterface{use MicroKernelTrait;publicfunctionprocess(ContainerBuilder$container):void    {// Validate all workflowsforeach ($container->findTaggedServiceIds('workflow')as$id =>$_) {$workflowDefinition =$container->getDefinition($id);$definitionArgument =$workflowDefinition->getArgument(0);if (!$definitionArgumentinstanceof Reference) {thrownewRuntimeException('The first argument of the workflow service must be a reference.');            }// warning: usually, one should not use the container to get a// service during the compilation phase But i'm an engineer, i know// what i'm doing$definition =$container->get((string)$definitionArgument);$name =$workflowDefinition->getArgument(3);            (newWorkflowValidator())->validate($definition,$name);        }    }}