From 988a532b78dfb25b249b66b9d1621377dd8decfd Mon Sep 17 00:00:00 2001 From: lubiana Date: Fri, 20 May 2022 09:28:47 +0200 Subject: [PATCH] wip: rewrite di chapter --- 09-dependency-injector.md | 10 + app/composer.json | 49 + app/composer.lock | 1239 +++++++++++++++++++++ app/config/container.php | 37 + app/config/routes.php | 10 + app/ecs.php | 89 ++ app/phpstan-baseline.neon | 6 + app/phpstan.neon | 8 + app/public/index.php | 3 + app/rector.php | 12 + app/src/Action/Hello.php | 29 + app/src/Action/Other.php | 24 + app/src/Bootstrap.php | 104 ++ app/src/Exception/InternalServerError.php | 9 + app/src/Exception/MethodNotAllowed.php | 9 + app/src/Exception/NotFound.php | 9 + app/src/Service/Time/Clock.php | 8 + app/src/Service/Time/SystemClock.php | 12 + 18 files changed, 1667 insertions(+) create mode 100644 app/composer.json create mode 100644 app/composer.lock create mode 100644 app/config/container.php create mode 100644 app/config/routes.php create mode 100644 app/ecs.php create mode 100644 app/phpstan-baseline.neon create mode 100644 app/phpstan.neon create mode 100644 app/public/index.php create mode 100644 app/rector.php create mode 100644 app/src/Action/Hello.php create mode 100644 app/src/Action/Other.php create mode 100644 app/src/Bootstrap.php create mode 100644 app/src/Exception/InternalServerError.php create mode 100644 app/src/Exception/MethodNotAllowed.php create mode 100644 app/src/Exception/NotFound.php create mode 100644 app/src/Service/Time/Clock.php create mode 100644 app/src/Service/Time/SystemClock.php diff --git a/09-dependency-injector.md b/09-dependency-injector.md index cfbeb7a..67d79e3 100644 --- a/09-dependency-injector.md +++ b/09-dependency-injector.md @@ -2,6 +2,16 @@ ### Dependency Injector +In the last chapter we rewrote our Actions to require the response-objet as a constructor parameter, and provided it +in the dispatcher section of our `Bootstrap.php`. As we only have one dependency this works really fine, but if we have +different classes with different dependencies our bootstrap file gets complicated quite quickly. Lets look at an example +to explain the problem and work on a solution. + +#### Adding a clock service + +Lets assume that we want to show the current time in our Hello action. We could easily just call use one of the many +ways to get the current time directly in the handle-method, but maybe we want to make that configurable and + A dependency injector resolves the dependencies of your class and makes sure that the correct objects are injected when the class is instantiated. diff --git a/app/composer.json b/app/composer.json new file mode 100644 index 0000000..980b03b --- /dev/null +++ b/app/composer.json @@ -0,0 +1,49 @@ +{ + "name": "lubian/no-framework", + "autoload": { + "psr-4": { + "Lubian\\NoFramework\\": "src/" + } + }, + "authors": [ + { + "name": "example", + "email": "test@example.com" + } + ], + "require": { + "php": ">=8.1", + "filp/whoops": "^2.14", + "laminas/laminas-diactoros": "^2.11", + "nikic/fast-route": "^1.3", + "psr/http-server-handler": "^1.0", + "psr/container": "^2.0" + }, + "require-dev": { + "phpstan/phpstan": "^1.6", + "symfony/var-dumper": "^6.0", + "slevomat/coding-standard": "^7.2", + "symplify/easy-coding-standard": "^10.2", 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'/routes.php'), + \Lubian\NoFramework\Service\Time\Clock::class => fn () => new \Lubian\NoFramework\Service\Time\SystemClock(), + \Lubian\NoFramework\Action\Hello::class => fn () => new \Lubian\NoFramework\Action\Hello( + $this->get(\Psr\Http\Message\ResponseInterface::class), + $this->get(\Lubian\NoFramework\Service\Time\Clock::class) + ), + \Lubian\NoFramework\Action\Other::class => fn () => new \Lubian\NoFramework\Action\Other( + $this->get(\Psr\Http\Message\ResponseInterface::class) + ), + ]; + } + + public function get(string $id) + { + if (! $this->has($id)) { + throw new class () extends \Exception implements \Psr\Container\NotFoundExceptionInterface { + }; + } + return $this->services[$id](); + } + + public function has(string $id): bool + { + return array_key_exists($id, $this->services); + } +}; diff --git a/app/config/routes.php b/app/config/routes.php new file mode 100644 index 0000000..c9b632d --- /dev/null +++ b/app/config/routes.php @@ -0,0 +1,10 @@ +addRoute('GET', '/hello[/{name}]', Hello::class); + $r->addRoute('GET', '/other', Other::class); +}; diff --git a/app/ecs.php b/app/ecs.php new file mode 100644 index 0000000..6742326 --- /dev/null +++ b/app/ecs.php @@ -0,0 +1,89 @@ +parallel(); + $config->paths([__DIR__ . '/src', __DIR__ . '/config', __DIR__ . '/ecs.php', __DIR__ . '/rector.php']); + $config->skip([BlankLineAfterOpeningTagFixer::class, OrderedImportsFixer::class, NewWithBracesFixer::class]); + + $config->sets([ + SetList::PSR_12, + SetList::STRICT, + SetList::ARRAY, + SetList::SPACES, + SetList::DOCBLOCK, + SetList::CLEAN_CODE, + SetList::COMMON, + SetList::COMMENTS, + SetList::NAMESPACES, + SetList::SYMPLIFY, + SetList::CONTROL_STRUCTURES, + ]); + + // force visibility declaration on class constants + $config->ruleWithConfiguration(ClassConstantVisibilitySniff::class, [ + 'fixable' => true, + ]); + + // sort all use statements + $config->rules([ + AlphabeticallySortedUsesSniff::class, + DisallowGroupUseSniff::class, + MultipleUsesPerLineSniff::class, + NamespaceSpacingSniff::class, + ]); + + // import all namespaces, and event php core functions and classes + $config->ruleWithConfiguration( + ReferenceUsedNamesOnlySniff::class, + [ + 'allowFallbackGlobalConstants' => false, + 'allowFallbackGlobalFunctions' => false, + 'allowFullyQualifiedGlobalClasses' => false, + 'allowFullyQualifiedGlobalConstants' => false, + 'allowFullyQualifiedGlobalFunctions' => false, + 'allowFullyQualifiedNameForCollidingClasses' => true, + 'allowFullyQualifiedNameForCollidingConstants' => true, + 'allowFullyQualifiedNameForCollidingFunctions' => true, + 'searchAnnotations' => true, + ] + ); + + // define newlines between use statements + $config->ruleWithConfiguration(UseSpacingSniff::class, [ + 'linesCountBeforeFirstUse' => 1, + 'linesCountBetweenUseTypes' => 1, + 'linesCountAfterLastUse' => 1, + ]); + + // strict types declaration should be on same line as opening tag + $config->ruleWithConfiguration(DeclareStrictTypesSniff::class, [ + 'declareOnFirstLine' => true, + 'spacesCountAroundEqualsSign' => 0, + ]); + + // disallow ?Foo typehint in favor of Foo|null + $config->ruleWithConfiguration(UnionTypeHintFormatSniff::class, [ + 'withSpaces' => 'no', + 'shortNullable' => 'no', + 'nullPosition' => 'last', + ]); + + // Remove useless parentheses in new statements + $config->rule(NewWithoutParenthesesSniff::class); +}; diff --git a/app/phpstan-baseline.neon b/app/phpstan-baseline.neon new file mode 100644 index 0000000..38383b9 --- /dev/null +++ b/app/phpstan-baseline.neon @@ -0,0 +1,6 @@ +parameters: + ignoreErrors: + - + message: "#^Short ternary operator is not allowed\\. Use null coalesce operator if applicable or consider using long ternary\\.$#" + count: 1 + path: src/Bootstrap.php diff --git a/app/phpstan.neon b/app/phpstan.neon new file mode 100644 index 0000000..2eac45a --- /dev/null +++ b/app/phpstan.neon @@ -0,0 +1,8 @@ +includes: + - phpstan-baseline.neon + +parameters: + level: max + paths: + - src + - config \ No newline at end of file diff --git a/app/public/index.php b/app/public/index.php new file mode 100644 index 0000000..970d132 --- /dev/null +++ b/app/public/index.php @@ -0,0 +1,3 @@ +paths([__DIR__ . '/src', __DIR__ . '/config', __DIR__ . '/ecs.php', __DIR__ . '/rector.php']); + + $rectorConfig->importNames(); + + $rectorConfig->sets([LevelSetList::UP_TO_PHP_81]); +}; diff --git a/app/src/Action/Hello.php b/app/src/Action/Hello.php new file mode 100644 index 0000000..6b4d24a --- /dev/null +++ b/app/src/Action/Hello.php @@ -0,0 +1,29 @@ +getAttribute('name', 'Stranger'); + $body = $this->response->getBody(); + + $time = $this->clock->now()->format('H:i:s'); + + $body->write('Hello ' . $name . '!
'); + $body->write('The Time is: ' . $time); + + return $this->response->withBody($body) + ->withStatus(200); + } +} diff --git a/app/src/Action/Other.php b/app/src/Action/Other.php new file mode 100644 index 0000000..c42c74b --- /dev/null +++ b/app/src/Action/Other.php @@ -0,0 +1,24 @@ +response->getBody(); + + $body->write('This works too!'); + + return $this->response->withBody($body) + ->withStatus(200); + } +} diff --git a/app/src/Bootstrap.php b/app/src/Bootstrap.php new file mode 100644 index 0000000..023c8c0 --- /dev/null +++ b/app/src/Bootstrap.php @@ -0,0 +1,104 @@ +pushHandler(new PrettyPageHandler); +} else { + $whoops->pushHandler(function (Throwable $t) { + error_log('ERROR: ' . $t->getMessage(), $t->getCode()); + echo 'Oooopsie'; + }); +} + +$whoops->register(); + +$container = require __DIR__ . '/../config/container.php'; +assert($container instanceof ContainerInterface); + +$request = $container->get(ServerRequestInterface::class); +assert($request instanceof ServerRequestInterface); + +$dispatcher = $container->get(Dispatcher::class); +assert($dispatcher instanceof Dispatcher); + + +$routeInfo = $dispatcher->dispatch($request->getMethod(), $request->getUri() ->getPath(),); + +try { + switch ($routeInfo[0]) { + case Dispatcher::FOUND: + $className = $routeInfo[1]; + $handler = $container->get($className); + assert($handler instanceof RequestHandlerInterface); + foreach ($routeInfo[2] as $attributeName => $attributeValue) { + $request = $request->withAttribute($attributeName, $attributeValue); + } + $response = $handler->handle($request); + break; + case Dispatcher::METHOD_NOT_ALLOWED: + throw new MethodNotAllowed; + case Dispatcher::NOT_FOUND: + default: + throw new NotFound; + } +} catch (MethodNotAllowed) { + $response = (new Response)->withStatus(405); + $response->getBody() + ->write('Method not Allowed'); +} catch (NotFound) { + $response = (new Response)->withStatus(404); + $response->getBody() + ->write('Not Found'); +} catch (Throwable $t) { + throw new InternalServerError($t->getMessage(), $t->getCode(), $t); +} + +foreach ($response->getHeaders() as $name => $values) { + $first = strtolower($name) !== 'set-cookie'; + foreach ($values as $value) { + $header = sprintf('%s: %s', $name, $value); + header($header, $first); + $first = false; + } +} + +$statusLine = sprintf( + 'HTTP/%s %s %s', + $response->getProtocolVersion(), + $response->getStatusCode(), + $response->getReasonPhrase() +); +header($statusLine, true, $response->getStatusCode()); + +echo $response->getBody(); diff --git a/app/src/Exception/InternalServerError.php b/app/src/Exception/InternalServerError.php new file mode 100644 index 0000000..9c3b369 --- /dev/null +++ b/app/src/Exception/InternalServerError.php @@ -0,0 +1,9 @@ +