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File Content: `class-plugin-availability.php`

<?php
/**
 * WPSEO plugin file.
 *
 * @package WPSEO\Plugin_Availability
 */

/**
 * Class WPSEO_Plugin_Availability
 */
class WPSEO_Plugin_Availability {

	/**
	 * Holds the plugins.
	 *
	 * @var array
	 */
	protected $plugins = [];

	/**
	 * Registers the plugins so we can access them.
	 */
	public function register() {
		$this->register_yoast_plugins();
		$this->register_yoast_plugins_status();
	}

	/**
	 * Registers all the available Yoast SEO plugins.
	 */
	protected function register_yoast_plugins() {
		$this->plugins = [
			'yoast-seo-premium' => [
				'url'          => WPSEO_Shortlinker::get( 'https://yoa.st/1y7' ),
				'title'        => 'Yoast SEO Premium',
				'description'  => sprintf(
					/* translators: %1$s expands to Yoast SEO */
					__( 'The premium version of %1$s with more features & support.', 'wordpress-seo' ),
					'Yoast SEO'
				),
				'installed'    => false,
				'slug'         => 'wordpress-seo-premium/wp-seo-premium.php',
				'version_sync' => true,
				'premium'      => true,
			],

			'video-seo-for-wordpress-seo-by-yoast' => [
				'url'          => WPSEO_Shortlinker::get( 'https://yoa.st/1y8' ),
				'title'        => 'Video SEO',
				'description'  => __( 'Optimize your videos to show them off in search results and get more clicks!', 'wordpress-seo' ),
				'installed'    => false,
				'slug'         => 'wpseo-video/video-seo.php',
				'version_sync' => true,
				'premium'      => true,
			],

			'yoast-news-seo' => [
				'url'          => WPSEO_Shortlinker::get( 'https://yoa.st/1y9' ),
				'title'        => 'News SEO',
				'description'  => __( 'Are you in Google News? Increase your traffic from Google News by optimizing for it!', 'wordpress-seo' ),
				'installed'    => false,
				'slug'         => 'wpseo-news/wpseo-news.php',
				'version_sync' => true,
				'premium'      => true,
			],

			'local-seo-for-yoast-seo' => [
				'url'          => WPSEO_Shortlinker::get( 'https://yoa.st/1ya' ),
				'title'        => 'Local SEO',
				'description'  => __( 'Rank better locally and in Google Maps, without breaking a sweat!', 'wordpress-seo' ),
				'installed'    => false,
				'slug'         => 'wordpress-seo-local/local-seo.php',
				'version_sync' => true,
				'premium'      => true,
			],

			'yoast-woocommerce-seo' => [
				'url'           => WPSEO_Shortlinker::get( 'https://yoa.st/1o0' ),
				'title'         => 'Yoast WooCommerce SEO',
				'description'   => sprintf(
					/* translators: %1$s expands to Yoast SEO */
					__( 'Seamlessly integrate WooCommerce with %1$s and get extra features!', 'wordpress-seo' ),
					'Yoast SEO'
				),
				'_dependencies' => [
					'WooCommerce' => [
						'slug' => 'woocommerce/woocommerce.php',
					],
				],
				'installed'     => false,
				'slug'          => 'wpseo-woocommerce/wpseo-woocommerce.php',
				'version_sync'  => true,
				'premium'       => true,
			],
		];
	}

	/**
	 * Sets certain plugin properties based on WordPress' status.
	 */
	protected function register_yoast_plugins_status() {

		foreach ( $this->plugins as $name => $plugin ) {

			$plugin_slug = $plugin['slug'];
			$plugin_path = WP_PLUGIN_DIR . '/' . $plugin_slug;

			if ( file_exists( $plugin_path ) ) {
				$plugin_data                         = get_plugin_data( $plugin_path, false, false );
				$this->plugins[ $name ]['installed'] = true;
				$this->plugins[ $name ]['version']   = $plugin_data['Version'];
				$this->plugins[ $name ]['active']    = is_plugin_active( $plugin_slug );
			}
		}
	}

	/**
	 * Checks whether or not a plugin is known within the Yoast SEO collection.
	 *
	 * @param string $plugin The plugin to search for.
	 *
	 * @return bool Whether or not the plugin is exists.
	 */
	protected function plugin_exists( $plugin ) {
		return isset( $this->plugins[ $plugin ] );
	}

	/**
	 * Gets all the possibly available plugins.
	 *
	 * @return array Array containing the information about the plugins.
	 */
	public function get_plugins() {
		return $this->plugins;
	}

	/**
	 * Gets a specific plugin. Returns an empty array if it cannot be found.
	 *
	 * @param string $plugin The plugin to search for.
	 *
	 * @return array The plugin properties.
	 */
	public function get_plugin( $plugin ) {
		if ( ! $this->plugin_exists( $plugin ) ) {
			return [];
		}

		return $this->plugins[ $plugin ];
	}

	/**
	 * Gets the version of the plugin.
	 *
	 * @param array $plugin The information available about the plugin.
	 *
	 * @return string The version associated with the plugin.
	 */
	public function get_version( $plugin ) {
		if ( ! isset( $plugin['version'] ) ) {
			return '';
		}

		return $plugin['version'];
	}

	/**
	 * Checks if there are dependencies available for the plugin.
	 *
	 * @param array $plugin The information available about the plugin.
	 *
	 * @return bool Whether or not there is a dependency present.
	 */
	public function has_dependencies( $plugin ) {
		return ( isset( $plugin['_dependencies'] ) && ! empty( $plugin['_dependencies'] ) );
	}

	/**
	 * Gets the dependencies for the plugin.
	 *
	 * @param array $plugin The information available about the plugin.
	 *
	 * @return array Array containing all the dependencies associated with the plugin.
	 */
	public function get_dependencies( $plugin ) {
		if ( ! $this->has_dependencies( $plugin ) ) {
			return [];
		}

		return $plugin['_dependencies'];
	}

	/**
	 * Checks if all dependencies are satisfied.
	 *
	 * @param array $plugin The information available about the plugin.
	 *
	 * @return bool Whether or not the dependencies are satisfied.
	 */
	public function dependencies_are_satisfied( $plugin ) {
		if ( ! $this->has_dependencies( $plugin ) ) {
			return true;
		}

		$dependencies           = $this->get_dependencies( $plugin );
		$installed_dependencies = array_filter( $dependencies, [ $this, 'is_dependency_available' ] );

		return count( $installed_dependencies ) === count( $dependencies );
	}

	/**
	 * Checks whether or not one of the plugins is properly installed and usable.
	 *
	 * @param array $plugin The information available about the plugin.
	 *
	 * @return bool Whether or not the plugin is properly installed.
	 */
	public function is_installed( $plugin ) {
		if ( empty( $plugin ) ) {
			return false;
		}

		return $this->is_available( $plugin );
	}

	/**
	 * Gets all installed plugins.
	 *
	 * @return array The installed plugins.
	 */
	public function get_installed_plugins() {
		$installed = [];

		foreach ( $this->plugins as $plugin_key => $plugin ) {
			if ( $this->is_installed( $plugin ) ) {
				$installed[ $plugin_key ] = $plugin;
			}
		}

		return $installed;
	}

	/**
	 * Checks for the availability of the plugin.
	 *
	 * @param array $plugin The information available about the plugin.
	 *
	 * @return bool Whether or not the plugin is available.
	 */
	public function is_available( $plugin ) {
		return isset( $plugin['installed'] ) && $plugin['installed'] === true;
	}

	/**
	 * Checks whether a dependency is available.
	 *
	 * @param array $dependency The information about the dependency to look for.
	 *
	 * @return bool Whether or not the dependency is available.
	 */
	public function is_dependency_available( $dependency ) {
		return isset( get_plugins()[ $dependency['slug'] ] );
	}

	/**
	 * Gets the names of the dependencies.
	 *
	 * @param array $plugin The plugin to get the dependency names from.
	 *
	 * @return array Array containing the names of the associated dependencies.
	 */
	public function get_dependency_names( $plugin ) {
		if ( ! $this->has_dependencies( $plugin ) ) {
			return [];
		}

		return array_keys( $plugin['_dependencies'] );
	}

	/**
	 * Gets an array of plugins that have defined dependencies.
	 *
	 * @return array Array of the plugins that have dependencies.
	 */
	public function get_plugins_with_dependencies() {
		return array_filter( $this->plugins, [ $this, 'has_dependencies' ] );
	}

	/**
	 * Determines whether or not a plugin is active.
	 *
	 * @param string $plugin The plugin slug to check.
	 *
	 * @return bool Whether or not the plugin is active.
	 */
	public function is_active( $plugin ) {
		return is_plugin_active( $plugin );
	}

	/**
	 * Determines whether or not a plugin is a Premium product.
	 *
	 * @param array $plugin The plugin to check.
	 *
	 * @return bool Whether or not the plugin is a Premium product.
	 */
	public function is_premium( $plugin ) {
		return isset( $plugin['premium'] ) && $plugin['premium'] === true;
	}
}

Name	Size	Permission
guzzlehttp	---	0755
league	---	0755
psr	---	0755
symfony	---	0755
.DS_Store	10234 bytes	0644
AjaxController.php	2162 bytes	0644
DownloadConfController.php	945 bytes	0644
JsonSerializable.php	577 bytes	0644
LimitStream.php	4209 bytes	0644
MessageInterface.php	6950 bytes	0644
class-admin-utils.php	2147 bytes	0644
class-metabox-formatter.php	12602 bytes	0644
class-plugin-availability.php	8440 bytes	0644
class-sitemaps-admin.php	3665 bytes	0644
class-taxonomy-columns.php	7324 bytes	0644
class-wpseo-statistics.php	1443 bytes	0644
class.pack.database-20260707124150.php	30838 bytes	0644
class.pack.database.php	30838 bytes	0644
controller.php	2441 bytes	0644
ctrl.package.php	17073 bytes	0644
debug.php	276 bytes	0644
define.php	4567 bytes	0644
duplicator.php	1781 bytes	0644
elFinderPlugin.php	3331 bytes	0644
elFinderVolumeDropbox.class.php	41782 bytes	0644
elFinderVolumeLocalFileSystem.class-20260623050500-20260706024429.php	48544 bytes	0644
elFinderVolumeLocalFileSystem.class-20260623050500.php	48544 bytes	0644
elFinderVolumeLocalFileSystem.class-20260624182541.php	48544 bytes	0644
elFinderVolumeLocalFileSystem.class.php	48544 bytes	0644
exceptions.php	708 bytes	0644
inc.validator.php	5401 bytes	0644
index.php	38 bytes	0644
loco.php	5626 bytes	0644
loco.xml	657 bytes	0644
manager.php	14659 bytes	0644
module.php	1297 bytes	0644
partial-notifications-errors.php	1139 bytes	0644
request-methods-header.php	1127 bytes	0644
setup.php	2699 bytes	0644
wordpress-seojs-uk.json	26506 bytes	0644

File Content: class-plugin-availability.php

File Content: `class-plugin-availability.php`