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<?php |
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namespace pjpawel\LightApi\Route; |
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use Exception; |
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use pjpawel\LightApi\Container\ContainerLoader; |
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use pjpawel\LightApi\Container\ContainerNotFoundException; |
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use pjpawel\LightApi\Container\LazyService\LazyServiceInterface; |
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use pjpawel\LightApi\Exception\KernelException; |
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use pjpawel\LightApi\Exception\ProgrammerException; |
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use pjpawel\LightApi\Http\Exception\HttpException; |
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use pjpawel\LightApi\Http\Request; |
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use pjpawel\LightApi\Http\Response; |
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use pjpawel\LightApi\Http\ResponseStatus; |
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use Psr\Container\ContainerExceptionInterface; |
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use Psr\Container\NotFoundExceptionInterface; |
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use ReflectionClass; |
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use ReflectionNamedType; |
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class Route |
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{ |
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private string $className; |
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private string $methodName; |
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public string $path; |
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public array $httpMethods; |
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public ?string $regexPath = null; |
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public function __construct(string $className, string $methodName, string $path, array $httpMethods) |
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{ |
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$this->className = $className; |
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$this->methodName = $methodName; |
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$this->path = $path; |
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$this->httpMethods = $httpMethods; |
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} |
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/** |
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* @return void |
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* @throws \ReflectionException |
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* @throws Exception |
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*/ |
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public function makeRegexPath(): void |
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{ |
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$this->regexPath = $this->path; |
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preg_match_all('/\{\w+\}/', $this->path, $pathParameters, PREG_SET_ORDER); |
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$this->regexPath = '/^' . str_replace('/', '\\/', $this->regexPath) . '$/'; |
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if (empty($pathParameters)) { |
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return; |
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} |
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$pathParameters = array_map( |
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function($param) { |
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return substr($param[0], 1, strlen($param[0])-2); |
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}, |
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$pathParameters |
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); |
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$reflectionMethod = (new ReflectionClass($this->className))->getMethod($this->methodName); |
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foreach ($reflectionMethod->getParameters() as $parameter) { |
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if (($parameterIndex = array_search($parameter->getName(), $pathParameters, true)) !== false) { |
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/** @var \ReflectionNamedType $parameterType */ |
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$parameterType = $parameter->getType(); |
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if ($parameterType->isBuiltin()) { |
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$parameterTypeName = $parameterType->getName(); |
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if ($parameterTypeName == 'string') { |
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$this->regexPath = str_replace('{' . $pathParameters[$parameterIndex] . '}', '(\w+)', $this->regexPath); |
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} elseif ($parameterTypeName == 'int') { |
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$this->regexPath = str_replace('{' . $pathParameters[$parameterIndex] . '}', '(\d+)', $this->regexPath); |
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} else { |
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throw new ProgrammerException(sprintf('Not supported builtin type %s for parameter %s', $parameterTypeName, $parameter->getName())); |
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} |
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//$this->pathParams[] = $pathParameters[$parameterIndex]; |
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unset($pathParameters[$parameterIndex]); |
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} else { |
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throw new ProgrammerException('Invalid parameter type ' . $parameterType->getName()); |
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} |
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} |
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} |
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if (!empty($pathParameters)) { |
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throw new ProgrammerException('Missing value for :' . implode(', ', $pathParameters)); |
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} |
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} |
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/** |
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* @param ContainerLoader $container |
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* @param Request $request |
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* @return Response |
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* @throws \ReflectionException |
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* @throws \pjpawel\LightApi\Container\ContainerNotFoundException |
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* @throws Exception |
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*/ |
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public function execute(ContainerLoader $container, Request $request): Response |
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{ |
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try { |
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$reflectionClass = new ReflectionClass($this->className); |
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$constructor = $reflectionClass->getConstructor(); |
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$constructorArgs = []; |
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if ($constructor != null) { |
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$constructorArgs = $this->loadArguments($constructor->getParameters(), $container, $request); //, false |
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} |
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$class = $reflectionClass->newInstanceArgs($constructorArgs); |
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$reflectionMethod = $reflectionClass->getMethod($this->methodName); |
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$args = $this->loadArguments($reflectionMethod->getParameters(), $container, $request); //, true |
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if (is_subclass_of($class, LazyServiceInterface::class)) { |
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$container->prepareContainerLocator($class::getAllServices()); |
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$class->setContainer($container); |
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} |
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$result = $reflectionMethod->invokeArgs($class, $args); |
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if ($result instanceof Response) { |
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return $result; |
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} elseif (is_array($result)) { |
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return new Response($result); |
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} elseif (is_string($result)) { |
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return new Response($result); |
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} else { |
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throw new ProgrammerException('Invalid object type of response: ' . var_export($result, true)); |
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} |
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} catch (HttpException $httpExc) { |
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return new Response($httpExc->getMessage(), ResponseStatus::from($httpExc->getCode())); |
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} catch (Exception $exc) { |
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return new Response('Internal server error occurred', ResponseStatus::INTERNAL_SERVER_ERROR); |
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} |
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} |
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/** |
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* @param \ReflectionParameter[] $parameters |
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* @param ContainerLoader $container |
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* @param Request $request |
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* @return array |
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* @throws KernelException |
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* @throws ContainerExceptionInterface |
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* @throws NotFoundExceptionInterface |
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* @throws \ReflectionException |
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* @throws ContainerNotFoundException |
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*/ |
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private function loadArguments(array $parameters, ContainerLoader $container, Request $request): array |
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{ |
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$pathParameters = []; |
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if ($this->regexPath !== null && preg_match($this->regexPath, $request->path, $pathParameters) === false) { |
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throw new KernelException('Cannot math regex path to requested path while loading parameters'); |
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} |
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array_shift($pathParameters); |
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$pathParameterIndex = 0; |
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$args = []; |
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foreach ($parameters as $parameter) { |
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/** @var ReflectionNamedType $type */ |
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$type = $parameter->getType(); |
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if ($type instanceof ReflectionNamedType && !$type->isBuiltin()) { |
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if ($type->getName() == Request::class) { |
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$args[] = $request; |
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} elseif ($type->getName() == Response::class) { |
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$args[] = new Response(); |
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} else { |
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$args[] = $container->get($type->getName()); |
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} |
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} else { |
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if ($type->getName() == 'int') { |
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$args[] = (int) $pathParameters[$pathParameterIndex]; |
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} else { |
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$args[] = $pathParameters[$pathParameterIndex]; |
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} |
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$pathParameterIndex++; |
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} |
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} |
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return $args; |
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} |
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public function __serialize(): array |
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{ |
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return [ |
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$this->className, |
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$this->methodName, |
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$this->path, |
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$this->httpMethods, |
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$this->regexPath |
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]; |
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} |
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public function __unserialize(array $data): void |
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{ |
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$this->className = $data[0]; |
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$this->methodName = $data[1]; |
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$this->path = $data[2]; |
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$this->httpMethods = $data[3]; |
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$this->regexPath = $data[4]; |
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} |
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} |