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                <?php  | 
            
                            
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                declare(strict_types = 1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Jarvis\Skill\Routing;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use FastRoute\{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    DataGenerator\GroupCountBased as DataGenerator,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    Dispatcher\GroupCountBased as Dispatcher,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    RouteParser\Std as Parser,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    RouteCollector  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                };  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Jarvis\{Jarvis, Skill\Core\ScopeManager}; | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Eric Chau <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Router extends Dispatcher  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $rawRoutes = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $routesNames = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $routeCollector;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $compilationKey;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $scopeManager;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(ScopeManager $scopeManager)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->scopeManager = $scopeManager;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Alias to Router's route collector ::addRoute method.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @see RouteCollector::addRoute  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function addRoute(Route $route) : Router  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->rawRoutes[$route->scope()] = $this->rawRoutes[$route->scope()] ?? [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->rawRoutes[$route->scope()][] = [$route->method(), $route->pattern(), $route->handler()];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->compilationKey = null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (null !== $name = $route->name()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->routesNames[$name] = $route->pattern();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function beginRoute(string $name = null) : Route  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return new Route($name, $this);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Generates URI associated to provided route name.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param  string $name   The URI route name we want to generate  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param  array  $params Parameters to replace in pattern  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \InvalidArgumentException if provided route name is unknown  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function uri(string $name, array $params = []) : string  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if (!isset($this->routesNames[$name])) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            throw new \InvalidArgumentException(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                "Cannot generate URI for '$name' cause it does not exist."  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $uri = $this->routesNames[$name];  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        foreach ($params as $key => $value) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            if (1 !== preg_match("~\{($key:?[^}]*)\}~", $uri, $matches)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                                continue;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $value = (string) $value;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $pieces = explode(':', $matches[1]); | 
            
            
                                                                        
                            
            
                                    
            
            
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                            if (1 < count($pieces) && 1 !== preg_match('~' . $pieces[1] . '~', $value)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                                continue;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $uri = str_replace($matches[0], $value, $uri);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $uri;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Alias of GroupCountBased::dispatch.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function match(string $method, string $uri)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->dispatch($method, $uri);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function dispatch($method, $uri)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        list($this->staticRouteMap, $this->variableRouteData) = $this->routeCollector()->getData();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return parent::dispatch(strtolower($method), $uri);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private function routeCollector() : RouteCollector  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $key = $this->generateCompilationKey();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (null === $this->compilationKey || $this->compilationKey !== $key) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->compilationKey = $key;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->routeCollector = new RouteCollector(new Parser(), new DataGenerator());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $enabledRoutes = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            foreach ($this->rawRoutes as $scope => $rawRoutes) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                if ($this->scopeManager->isEnabled($scope)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $enabledRoutes = array_merge($enabledRoutes, $rawRoutes);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            foreach ($enabledRoutes as $rawRoute) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                list($method, $route, $handler) = $rawRoute;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->routeCollector->addRoute($method, $route, $handler);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->routeCollector;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private function generateCompilationKey() : string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return md5(implode(',', $this->scopeManager->all())); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.