allejo\stakx\Server\RouteDispatcher

Complexity

Total Complexity

25

Size/Duplication

Total Lines	238
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	16

Importance

Changes

0

10 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	3	1
A	staticPageViewController()	0	19	2
A	dynamicPageViewController()	0	25	4
A	repeaterPageViewController()	0	20	3
A	createController()	0	21	4
A	hasBeenTouched()	0	13	2
A	create()	0	13	2
A	normalizeUrl()	0	4	1
A	getContentItem()	0	14	3
A	getExpandedValue()	0	15	3

<?php

/**
 * @copyright 2018 Vladimir Jimenez
 * @license   https://github.com/stakx-io/stakx/blob/master/LICENSE.md MIT
 */

namespace allejo\stakx\Server;

use allejo\stakx\Compiler;
use allejo\stakx\Document\BasePageView;
use allejo\stakx\Document\CollectableItem;
use allejo\stakx\Document\DynamicPageView;
use allejo\stakx\Document\ReadableDocument;
use allejo\stakx\Document\RepeaterPageView;
use allejo\stakx\Document\StaticPageView;
use allejo\stakx\Document\TemplateReadyDocument;
use allejo\stakx\Filesystem\FilesystemLoader as fs;
use allejo\stakx\FrontMatter\ExpandedValue;
use allejo\stakx\Service;
use FastRoute\RouteCollector;
use Psr\Http\Message\ServerRequestInterface;
use React\Http\Response;

class RouteDispatcher

Since you have declared the constructor as private, maybe you should also declare the class as final.

{
    private static $baseUrl = '';
    private $lastModified = [];

    /**
     * @internal
     */
    private function __construct()
    {
    }

    /**
     * Build a controller for handling a Static PageView's URL.
     *
     * @param StaticPageView $pageView
     * @param Compiler       $compiler
     *
     * @return \Closure
     */
    private function staticPageViewController(StaticPageView $pageView, Compiler $compiler)
    {
        return function () use ($pageView, $compiler) {
            Service::setOption('currentTemplate', $pageView->getAbsoluteFilePath());

            if ($this->hasBeenTouched($pageView))
            {
                $pageView->readContent();
            }

            $mimeType = MimeDetector::getMimeType(fs::getExtension($pageView->getTargetFile()));

$pageView->getTargetFile() is of type string, but the function expects a object<string>.

            return new Response(
                200,
                ['Content-Type' => $mimeType],
                $compiler->renderStaticPageView($pageView)
            );
        };
    }

    /**
     * Build a controller for handling a Dynamic PageView's URL.
     *
     * @param DynamicPageView $pageView
     * @param Compiler        $compiler
     *
     * @return \Closure
     */
    private function dynamicPageViewController(DynamicPageView $pageView, Compiler $compiler)
    {
        return function (ServerRequestInterface $request) use ($pageView, $compiler) {
            Service::setOption('currentTemplate', $pageView->getAbsoluteFilePath());

            $contentItem = self::getContentItem($pageView, $request->getUri()->getPath());

            if ($contentItem === null)
            {
                return DevServer::return404();
            }

            if ($this->hasBeenTouched($pageView))
            {
                $pageView->readContent();
            }

            if ($this->hasBeenTouched($contentItem))

$contentItem is of type object<allejo\stakx\Document\CollectableItem>, but the function expects a object<allejo\stakx\Document\ReadableDocument>.

            {
                $contentItem->readContent();
            }

            return DevServer::return200($compiler->renderDynamicPageView($pageView, $contentItem));

$contentItem is of type object<allejo\stakx\Document\CollectableItem>, but the function expects a object<allejo\stakx\Document\TemplateReadyDocument>.

        };
    }

    /**
     * Build a controller for handling a Repeater PageView's URL.
     *
     * @param RepeaterPageView $pageView
     * @param Compiler         $compiler
     *
     * @return \Closure
     */
    private function repeaterPageViewController(RepeaterPageView $pageView, Compiler $compiler)
    {
        return function (ServerRequestInterface $request) use ($pageView, $compiler) {
            Service::setOption('currentTemplate', $pageView->getAbsoluteFilePath());

            $expandedValue = self::getExpandedValue($pageView, $request->getUri()->getPath());

            if ($expandedValue === null)
            {
                return DevServer::return404();
            }

            if ($this->hasBeenTouched($pageView))
            {
                $pageView->readContent();
            }

            return DevServer::return200($compiler->renderRepeaterPageView($pageView, $expandedValue));
        };
    }

    /**
     * Return the appropriate controller based on a PageView's type.
     *
     * @param BasePageView|DynamicPageView|RepeaterPageView|StaticPageView $pageView
     * @param Compiler                                                     $compiler
     *
     * @return \Closure
     */
    private function createController(BasePageView $pageView, Compiler $compiler)
    {
        switch ($pageView->getType())
        {
            case BasePageView::STATIC_TYPE:
                return $this->staticPageViewController($pageView, $compiler);

$pageView of type object<allejo\stakx\Document\BasePageView> is not a sub-type of object<allejo\stakx\Document\StaticPageView>. It seems like you assume a child class of the class allejo\stakx\Document\BasePageView to be always present.

            case BasePageView::DYNAMIC_TYPE:
                return $this->dynamicPageViewController($pageView, $compiler);

$pageView of type object<allejo\stakx\Document\BasePageView> is not a sub-type of object<allejo\stakx\Document\DynamicPageView>. It seems like you assume a child class of the class allejo\stakx\Document\BasePageView to be always present.

            case BasePageView::REPEATER_TYPE:
                return $this->repeaterPageViewController($pageView, $compiler);

$pageView of type object<allejo\stakx\Document\BasePageView> is not a sub-type of object<allejo\stakx\Document\RepeaterPageView>. It seems like you assume a child class of the class allejo\stakx\Document\BasePageView to be always present.

            default:
                return function () {
                    $errMsg = 'This URL type has not yet been implemented.';

                    return new Response(501, ['Content-Type' => 'text/plain'], $errMsg);
                };
        }
    }

    /**
     * Check to see if a file has been touched since we last read it.
     *
     * @param ReadableDocument $document
     *
     * @return bool True if the file has been modified since it was last accessed
     */
    private function hasBeenTouched(ReadableDocument $document)
    {
        $rPath = $document->getRelativeFilePath();

        if (!isset($this->lastModified[$rPath]))
        {
            $this->lastModified[$rPath] = $document->getLastModified();

            return true;
        }

        return $document->getLastModified() > $this->lastModified[$rPath];
    }

    /**
     * Create a FastRoute Dispatcher.
     *
     * @param PageViewRouter $router
     * @param Compiler       $compiler
     *
     * @return \FastRoute\Dispatcher
     */
    public static function create(PageViewRouter $router, Compiler $compiler)
    {
        self::$baseUrl = $router->getBaseUrl();

        return \FastRoute\simpleDispatcher(function (RouteCollector $r) use ($router, $compiler) {
            $dispatcher = new RouteDispatcher();

            foreach ($router->getRouteMapping() as $route => $pageView)
            {
                $r->get($route, $dispatcher->createController($pageView, $compiler));
            }
        });
    }

    /**
     * Normalize a given URL.
     *
     * A normalized URL is one with `baseurl` stripped away from it. This is necessary because all permalinks in stakx
     * are handled without the base so it's necessary to be able to reference correct correct permalinks.
     *
     * @param string $url
     *
     * @return mixed
     */
    public static function normalizeUrl($url)
    {
        return str_replace(self::$baseUrl, '/', $url);
    }

    /**
     * Find a ContentItem from a Dynamic PageView or null if it doesn't exist.
     *
     * @param DynamicPageView $pageView
     * @param                 $permalink
     *
     * @return CollectableItem|ReadableDocument|TemplateReadyDocument|null
     */
    private static function getContentItem(DynamicPageView $pageView, $permalink)
    {
        $permalink = self::normalizeUrl($permalink);

Consider using a different name than the parameter $permalink. This often makes code more readable.

        foreach ($pageView->getCollectableItems() as $collectableItem)
        {
            if ($collectableItem['permalink'] === $permalink)
            {
                return $collectableItem;
            }
        }

        return null;
    }

    /**
     * Find the ExpandedValue from a Repeater PageView or null if it doesn't exist.
     *
     * @param RepeaterPageView $pageView
     * @param                  $permalink
     *
     * @return ExpandedValue|null
     */
    private static function getExpandedValue(RepeaterPageView $pageView, $permalink)
    {
        $url = self::normalizeUrl($permalink);
        $repeaterPermalinks = $pageView->getRepeaterPermalinks();

        foreach ($repeaterPermalinks as $expandedValue)
        {
            if ($expandedValue->getEvaluated() === $url)
            {
                return $expandedValue;
            }
        }

        return null;
    }
}