AssetManager::getJsVars() - Code Metrics - Inspection of "Simplify set JS variables" - yiisoft/assets - Measure and Improve Code Quality continuously with Scrutinizer

Passed
Pull Request — master (#68)

by Sergei
created 2021-05-08 15:12 UTC
AssetManager::getJsVars() A

↳ Parent: AssetManager
Complexity

Conditions	1
Paths	1
Size

Total Lines	3
Code Lines	1
Duplication

Lines	0
Ratio	0 %
Code Coverage

Tests	2
CRAP Score	1
Importance

Changes
Metric	Value
cc	1
eloc	1
c	0
b	0
f	0
nc	1
nop	0
dl	0
loc	3
ccs	2
cts	2
cp	1
crap	1
rs	10
<?php

declare(strict_types=1);

namespace Yiisoft\Assets;

use RuntimeException;
use Yiisoft\Aliases\Aliases;
use Yiisoft\Assets\Exception\InvalidConfigException;

use function array_key_exists;
use function array_merge;
use function array_shift;
use function array_unshift;
use function in_array;
use function is_array;
use function is_file;
use function is_int;

/**
 * AssetManager manages asset bundle configuration and loading.
 */
final class AssetManager
{
    /**
     * @var string[] List of names of allowed asset bundles. If the array is empty, then any asset bundles are allowed.
     */
    private array $allowedBundleNames;

    /**
     * @var array The asset bundle configurations. This property is provided to customize asset bundles.
     */
    private array $customizedBundles;

    /**
     * @var array AssetBundle[] list of the registered asset bundles.
     * The keys are the bundle names, and the values are the registered {@see AssetBundle} objects.
     *
     * {@see registerAssetBundle()}
     */
    private array $registeredBundles = [];

    private array $loadedBundles = [];
    private array $dummyBundles = [];
    private array $cssFiles = [];
    private array $jsFiles = [];
    private array $jsStrings = [];
    private array $jsVars = [];
    private ?AssetConverterInterface $converter = null;
    private ?AssetPublisherInterface $publisher = null;
    private AssetLoaderInterface $loader;
    private Aliases $aliases;

    /**
     * @param Aliases $aliases The aliases instance.
     * @param AssetLoaderInterface $loader The loader instance.
     * @param string[] $allowedBundleNames List of names of allowed asset bundles. If the array is empty, then any
     * asset bundles are allowed. If the names of allowed asset bundles were specified, only these asset bundles
     * or their dependencies can be registered {@see register()} and obtained {@see getBundle()}. Also, specifying
     * names allows to export {@see export()} asset bundles automatically without first registering them manually.
     * @param array $customizedBundles The asset bundle configurations. Provided to customize asset bundles.
     * When a bundle is being loaded by {@see getBundle()}, if it has a corresponding configuration specified
     * here, the configuration will be applied to the bundle. The array keys are the asset class bundle names
     * (without leading backslash). If a value is false, it means the corresponding asset bundle is disabled
     * and {@see getBundle()} should return an instance of the specified asset bundle with empty property values.
     */
    public function __construct(
        Aliases $aliases,
        AssetLoaderInterface $loader,
        array $allowedBundleNames = [],
        array $customizedBundles = []
    ) {
        $this->aliases = $aliases;
        $this->loader = $loader;
        $this->allowedBundleNames = $allowedBundleNames;
        $this->customizedBundles = $customizedBundles;
    }

    /**
     * Returns a cloned named asset bundle.
     *
     * This method will first look for the bundle in {@see $customizedBundles}.
     * If not found, it will treat `$name` as the class of the asset bundle and create a new instance of it.
     * If `$name` is not a class name, an {@see AssetBundle} instance will be created.
     *
     * Cloning is used to prevent an asset bundle instance from being modified in a non-context of the asset manager.
     *
     * @param string $name The class name of the asset bundle (without the leading backslash).
     *
     * @throws InvalidConfigException For invalid asset bundle configuration.
     *
     * @return AssetBundle The asset bundle instance.
     */
    public function getBundle(string $name): AssetBundle
    {
        if (!empty($this->allowedBundleNames)) {
            $this->checkAllowedBundleName($name);
        }

        $bundle = $this->loadBundle($name);
        $bundle = $this->publishBundle($bundle);

        return clone $bundle;
    }

    /**
     * Returns the actual URL for the specified asset.
     *
     * @param string $name The asset bundle name.
     * @param string $path The asset path.
     *
     * @throws InvalidConfigException If asset files are not found.
     *
     * @return string The actual URL for the specified asset.
     */
    public function getAssetUrl(string $name, string $path): string
    {
        return $this->loader->getAssetUrl($this->getBundle($name), $path);
    }

    /**
     * Return config array CSS AssetBundle.
     *
     * @return array
     */
    public function getCssFiles(): array
    {
        return $this->cssFiles;
    }

    /**
     * Returns config array JS AssetBundle.
     *
     * @return array
     */
    public function getJsFiles(): array
    {
        return $this->jsFiles;
    }

    /**
     * Returns JS code blocks.
     *
     * @return array
     */
    public function getJsStrings(): array
    {
        return $this->jsStrings;
    }

    /**
     * Returns JS variables.
     *
     * @return array
     */
    public function getJsVars(): array
    {
        return $this->jsVars;
    }

    /**
     * Returns a new instance with the specified converter.
     *
     * @param AssetConverterInterface $converter
     *
     * @return self
     */
    public function withConverter(AssetConverterInterface $converter): self
    {
        $new = clone $this;
        $new->converter = $converter;
        return $new;
    }

    /**
     * Returns a new instance with the specified loader.
     *
     * @param AssetLoaderInterface $loader
     *
     * @return self
     */
    public function withLoader(AssetLoaderInterface $loader): self
    {
        $new = clone $this;
        $new->loader = $loader;
        return $new;
    }

    /**
     * Returns a new instance with the specified publisher.
     *
     * @param AssetPublisherInterface $publisher
     *
     * @return self
     */
    public function withPublisher(AssetPublisherInterface $publisher): self
    {
        $new = clone $this;
        $new->publisher = $publisher;
        return $new;
    }

    /**
     * Exports registered asset bundles.
     *
     * When using the allowed asset bundles, the export result will always be the same,
     * since the asset bundles are registered before the export. If do not use the allowed asset bundles mode,
     * must register {@see register()} all the required asset bundles before exporting.
     *
     * @param AssetExporterInterface $exporter The exporter instance.
     *
     * @throws InvalidConfigException If an error occurs during registration when using allowed asset bundles.
     * @throws RuntimeException If no asset bundles were registered or an error occurred during the export.
     */
    public function export(AssetExporterInterface $exporter): void
    {
        if (!empty($this->allowedBundleNames)) {
            $this->registerAllAllowed();
        }

        if (empty($this->registeredBundles)) {
            throw new RuntimeException('Not a single asset bundle was registered.');
        }

        $exporter->export($this->registeredBundles);
    }

    /**
     * Registers asset bundles by names.
     *
     * @param string[] $names
     * @param int|null $position
     *
     * @throws InvalidConfigException
     * @throws RuntimeException
     */
    public function register(array $names, ?int $position = null): void
    {
        if (!empty($this->allowedBundleNames)) {
            foreach ($names as $name) {
                $this->checkAllowedBundleName($name);
            }
        }

        foreach ($names as $name) {
            $this->registerAssetBundle($name, $position);
            $this->registerFiles($name);
        }
    }

    /**
     * Registers all allowed asset bundles.
     *
     * @throws InvalidConfigException
     * @throws RuntimeException
     */
    public function registerAllAllowed(): void
    {
        if (empty($this->allowedBundleNames)) {
            throw new RuntimeException('The allowed names of the asset bundles were not set.');
        }

        foreach ($this->allowedBundleNames as $name) {
            $this->registerAssetBundle($name);
            $this->registerFiles($name);
        }
    }

    /**
     * Returns whether the asset bundle is registered.
     *
     * @param string $name The class name of the asset bundle (without the leading backslash).
     *
     * @return bool Whether the asset bundle is registered.
     */
    public function isRegisteredBundle(string $name): bool
    {
        return isset($this->registeredBundles[$name]);
    }

    /**
     * Registers a CSS file.
     *
     * @param string $url The CSS file to be registered.
     * @param array $options The HTML attributes for the link tag.
     * @param string|null $key The key that identifies the CSS file.
     */
    private function registerCssFile(string $url, array $options = [], string $key = null): void
    {
        $key = $key ?: $url;

        $this->cssFiles[$key]['url'] = $url;
        $this->cssFiles[$key]['attributes'] = $options;
    }

    /**
     * Registers a JS file.
     *
     * @param string $url The JS file to be registered.
     * @param array $options The HTML attributes for the script tag. The following options are specially handled and
     * are not treated as HTML attributes:
     *
     * - `position`: specifies where the JS script tag should be inserted in a page. The possible values are:
     *     * {@see \Yiisoft\View\WebView::POSITION_HEAD} In the head section.
     *     * {@see \Yiisoft\View\WebView::POSITION_BEGIN} At the beginning of the body section.
     *     * {@see \Yiisoft\View\WebView::POSITION_END} At the end of the body section. This is the default value.
     * @param string|null $key The key that identifies the JS file.
     */
    private function registerJsFile(string $url, array $options = [], string $key = null): void
    {
        $key = $key ?: $url;

        if (!array_key_exists('position', $options)) {
            $options = array_merge(['position' => 3], $options);
        }

        $this->jsFiles[$key]['url'] = $url;
        $this->jsFiles[$key]['attributes'] = $options;
    }

    /**
     * Converter SASS, SCSS, Stylus and other formats to CSS.
     *
     * @param AssetBundle $bundle
     */
    private function convertCss(AssetBundle $bundle): void
    {
        foreach ($bundle->css as $i => $css) {
            if (is_array($css)) {
                $file = array_shift($css);
                if (AssetUtil::isRelative($file)) {
                    $css = array_merge($bundle->cssOptions, $css);
                    $baseFile = $this->aliases->get("{$bundle->basePath}/{$file}");
                    if (is_file($baseFile)) {
                        /**
                         * @psalm-suppress PossiblyNullArgument
                         * @psalm-suppress PossiblyNullReference
                         */
                        array_unshift($css, $this->converter->convert(
                        array_unshift($css, $this->converter->/** @scrutinizer ignore-call */ convert(
                            $file,
                            $bundle->basePath,
                            /** @scrutinizer ignore-type */ $bundle->basePath,
                            $bundle->converterOptions,
                        ));

                        $bundle->css[$i] = $css;
                    }
                }
            } elseif (AssetUtil::isRelative($css)) {
                $baseCss = $this->aliases->get("{$bundle->basePath}/{$css}");
                if (is_file("$baseCss")) {
                    /**
                     * @psalm-suppress PossiblyNullArgument
                     * @psalm-suppress PossiblyNullReference
                     */
                    $bundle->css[$i] = $this->converter->convert(
                        $css,
                        $bundle->basePath,
                        $bundle->converterOptions
                    );
                }
            }
        }
    }

    /**
     * Convert files from TypeScript and other formats into JavaScript.
     *
     * @param AssetBundle $bundle
     */
    private function convertJs(AssetBundle $bundle): void
    {
        foreach ($bundle->js as $i => $js) {
            if (is_array($js)) {
                $file = array_shift($js);
                if (AssetUtil::isRelative($file)) {
                    $js = array_merge($bundle->jsOptions, $js);
                    $baseFile = $this->aliases->get("{$bundle->basePath}/{$file}");
                    if (is_file($baseFile)) {
                        /**
                         * @psalm-suppress PossiblyNullArgument
                         * @psalm-suppress PossiblyNullReference
                         */
                        array_unshift($js, $this->converter->convert(
                            $file,
                            $bundle->basePath,
                            /** @scrutinizer ignore-type */ $bundle->basePath,
                            $bundle->converterOptions
                        ));

                        $bundle->js[$i] = $js;
                    }
                }
            } elseif (AssetUtil::isRelative($js)) {
                $baseJs = $this->aliases->get("{$bundle->basePath}/{$js}");
                if (is_file($baseJs)) {
                    /**
                     * @psalm-suppress PossiblyNullArgument
                     * @psalm-suppress PossiblyNullReference
                     */
                    $bundle->js[$i] = $this->converter->convert($js, $bundle->basePath);
                }
            }
        }
    }

    /**
     * Registers the named asset bundle.
     *
     * All dependent asset bundles will be registered.
     *
     * @param string $name The class name of the asset bundle (without the leading backslash).
     * @param int|null $position If set, this forces a minimum position for javascript files.
     * This will adjust depending assets javascript file position or fail if requirement can not be met.
     * If this is null, asset bundles position settings will not be changed.
     *
     * {@see registerJsFile()} For more details on javascript position.
     *
     * @throws InvalidConfigException If the asset or the asset file paths to be published does not exist.
     * @throws RuntimeException If the asset bundle does not exist or a circular dependency is detected.
     */
    private function registerAssetBundle(string $name, int $position = null): void
    {
        if (!isset($this->registeredBundles[$name])) {
            $bundle = $this->publishBundle($this->loadBundle($name));

            $this->registeredBundles[$name] = false;

            $pos = $bundle->jsOptions['position'] ?? null;

            foreach ($bundle->depends as $dep) {
                $this->registerAssetBundle($dep, $pos);
            }

            unset($this->registeredBundles[$name]);
            $this->registeredBundles[$name] = $bundle;
        } elseif ($this->registeredBundles[$name] === false) {
            throw new RuntimeException("A circular dependency is detected for bundle \"{$name}\".");
        } else {
            $bundle = $this->registeredBundles[$name];
        }

        if ($position !== null) {
            $pos = $bundle->jsOptions['position'] ?? null;

            if ($pos === null) {
                $bundle->jsOptions['position'] = $pos = $position;
            } elseif ($pos > $position) {
                throw new RuntimeException(
                    "An asset bundle that depends on \"{$name}\" has a higher JavaScript file " .
                    "position configured than \"{$name}\"."
                );
            }

            // update position for all dependencies
            foreach ($bundle->depends as $dep) {
                $this->registerAssetBundle($dep, $pos);
            }
        }
    }

    /**
     * Register assets from a named bundle and its dependencies.
     *
     * @param string $bundleName The asset bundle name.
     *
     * @throws InvalidConfigException If asset files are not found.
     */
    private function registerFiles(string $bundleName): void
    {
        if (!isset($this->registeredBundles[$bundleName])) {
            return;
        }

        $bundle = $this->registeredBundles[$bundleName];

        foreach ($bundle->depends as $dep) {
            $this->registerFiles($dep);
        }

        $this->registerAssetFiles($bundle);
    }

    /**
     * Registers asset files from a bundle considering dependencies.
     *
     * @param AssetBundle $bundle
     *
     * @throws InvalidConfigException If asset files are not found.
     */
    private function registerAssetFiles(AssetBundle $bundle): void
    {
        if (isset($bundle->basePath, $bundle->baseUrl) && null !== $this->converter) {
            $this->convertCss($bundle);
            $this->convertJs($bundle);
        }

        foreach ($bundle->js as $js) {
            if (is_array($js)) {
                $file = array_shift($js);
                $options = array_merge($bundle->jsOptions, $js);
                $this->registerJsFile($this->loader->getAssetUrl($bundle, $file), $options);
            } elseif ($js !== null) {
                $this->registerJsFile($this->loader->getAssetUrl($bundle, $js), $bundle->jsOptions);
            }
        }

        $this->jsStrings = array_merge($this->jsStrings, $bundle->jsStrings);
        $this->jsVars = array_merge($this->jsVars, $bundle->jsVars);

        foreach ($bundle->css as $css) {
            if (is_array($css)) {
                $file = array_shift($css);
                $options = array_merge($bundle->cssOptions, $css);
                $this->registerCssFile($this->loader->getAssetUrl($bundle, $file), $options);
            } elseif ($css !== null) {
                $this->registerCssFile($this->loader->getAssetUrl($bundle, $css), $bundle->cssOptions);
            }
        }
    }

    /**
     * Loads an asset bundle class by name.
     *
     * @param string $name The asset bundle name.
     *
     * @throws InvalidConfigException For invalid asset bundle configuration.
     *
     * @return AssetBundle The asset bundle instance.
     */
    private function loadBundle(string $name): AssetBundle
    {
        if (isset($this->loadedBundles[$name])) {
            return $this->loadedBundles[$name];
        }

        if (!isset($this->customizedBundles[$name])) {
            return $this->loadedBundles[$name] = $this->loader->loadBundle($name);
        }

        if ($this->customizedBundles[$name] instanceof AssetBundle) {
            return $this->loadedBundles[$name] = $this->customizedBundles[$name];
        }

        if (is_array($this->customizedBundles[$name])) {
            return $this->loadedBundles[$name] = $this->loader->loadBundle($name, $this->customizedBundles[$name]);
        }

        if ($this->customizedBundles[$name] === false) {
            return $this->dummyBundles[$name] ??= $this->loader->loadBundle($name, (array) (new AssetBundle()));
        }

        throw new InvalidConfigException("Invalid configuration of the \"{$name}\" asset bundle.");
    }

    /**
     * Publishes a asset bundle.
     *
     * @param AssetBundle $bundle The asset bundle to publish.
     *
     * @throws InvalidConfigException If the asset or the asset file paths to be published does not exist.
     *
     * @return AssetBundle The published asset bundle.
     */
    private function publishBundle(AssetBundle $bundle): AssetBundle
    {
        if (!$bundle->cdn && $this->publisher !== null && !empty($bundle->sourcePath)) {
            [$bundle->basePath, $bundle->baseUrl] = $this->publisher->publish($bundle);
        }

        return $bundle;
    }

    /**
     * Checks whether asset bundle are allowed by name {@see $allowedBundleNames}.
     *
     * @param string $name The asset bundle name to check.
     *
     * @throws InvalidConfigException For invalid asset bundle configuration.
     * @throws RuntimeException If The asset bundle name is not allowed.
     */
    public function checkAllowedBundleName(string $name): void
    {
        if (isset($this->loadedBundles[$name]) || in_array($name, $this->allowedBundleNames, true)) {
            return;
        }

        foreach ($this->allowedBundleNames as $bundleName) {
            if ($this->isAllowedBundleDependencies($name, $this->loadBundle($bundleName))) {
                return;
            }
        }

        throw new RuntimeException("The \"{$name}\" asset bundle is not allowed.");
    }

    /**
     * Recursively checks whether the asset bundle name is allowed in dependencies.
     *
     * @param string $name The asset bundle name to check.
     * @param AssetBundle $bundle The asset bundle to check.
     *
     * @throws InvalidConfigException For invalid asset bundle configuration.
     *
     * @return bool Whether the asset bundle name is allowed in dependencies.
     */
    private function isAllowedBundleDependencies(string $name, AssetBundle $bundle): bool
    {
        foreach ($bundle->depends as $depend) {
            if ($name === $depend || $this->isAllowedBundleDependencies($name, $this->loadBundle($depend))) {
                return true;
            }
        }

        return false;
    }
}

yiisoft / assets

Pull Request — master (#68)

AssetManager::getJsVars() A

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