Added logic to clean root files

inc/Engine/Preload/Subscriber.php

@@ -100,6 +100,7 @@ public static function get_subscribed_events() {
 			],
 			'rocket_after_process_buffer'            => 'update_cache_row',
 			'rocket_deactivation'                    => 'on_deactivation',
+			'rocket_reset_preload'                   => 'on_permalink_changed',
 			'permalink_structure_changed'            => 'on_permalink_changed',
 			'wp_rocket_upgrade'                      => [ 'on_update', 16, 2 ],
 			'rocket_rucss_complete_job_status'       => 'clean_url',

inc/ThirdParty/Plugins/I18n/WPML.php

@@ -3,6 +3,7 @@
 namespace WP_Rocket\ThirdParty\Plugins\I18n;
 
 use WP_Rocket\Event_Management\Subscriber_Interface;
+use WP_Filesystem_Direct;
 use WP_Rocket\ThirdParty\ReturnTypesTrait;
 
 /**
@@ -11,22 +12,46 @@
 class WPML implements Subscriber_Interface {
 	use ReturnTypesTrait;
 
+	/**
+	 * Filesystem instance.
+	 *
+	 * @var WP_Filesystem_Direct
+	 */
+	protected $filesystem;
+
+	/**
+	 * Instantiate class.
+	 *
+	 * @param WP_Filesystem_Direct $filesystem Filesystem instance.
+	 */
+	public function __construct( WP_Filesystem_Direct $filesystem = null ) {
+		$this->filesystem = $filesystem ?: rocket_direct_filesystem();
+	}
+
+
 	/**
 	 * Events for subscriber to listen to.
 	 *
 	 * @return array
 	 */
 	public static function get_subscribed_events() {
-		if ( ! defined( 'ICL_SITEPRESS_VERSION' ) ) {
-			return [];
-		}
 
 		$events = [
-			'rocket_rucss_is_home_url'                => [ 'is_secondary_home', 10, 2 ],
-			'rocket_preload_all_to_pending_condition' => 'clean_only_right_domain',
-			'rocket_preload_sitemap_before_queue'     => 'add_languages_sitemaps',
+			'activate_sitepress-multilingual-cms/sitepress.php' => 'maybe_clear_on_disable',
+			'deactivate_sitepress-multilingual-cms/sitepress.php' => 'maybe_clear_on_disable',
 		];
 
+		if ( ! defined( 'ICL_SITEPRESS_VERSION' ) ) {
+			return $events;
+		}
+
+		$events['rocket_rucss_is_home_url']                 = [ 'is_secondary_home', 10, 2 ];
+		$events['rocket_preload_all_to_pending_condition']  = 'clean_only_right_domain';
+		$events['rocket_preload_sitemap_before_queue']      = 'add_languages_sitemaps';
+		$events['after_rocket_clean_home']                  = 'remove_root_cached_files';
+		$events['after_rocket_clean_domain']                = 'remove_root_cached_files';
+		$events['pre_update_option_icl_sitepress_settings'] = [ 'on_change_directory_for_default_language_clean_cache', 10, 2 ];
+
 		return $events;
 	}
 
@@ -100,4 +125,72 @@ public function add_languages_sitemaps( $sitemaps ) {
 		}
 		return array_unique( $new_sitemaps );
 	}
+
+	/**
+	 * Remove root files when WPML is active.
+	 *
+	 * @return void
+	 */
+	public function remove_root_cached_files() {
+		$site_url               = home_url();
+		$host_name              = wp_parse_url( $site_url, PHP_URL_HOST );
+		$cache_folder_path      = _rocket_get_wp_rocket_cache_path() . $host_name . '/';
+		$cache_folder_directory = $this->filesystem->dirlist( $cache_folder_path );
+
+		if ( ! is_array( $cache_folder_directory ) || ! is_array( array_keys( $cache_folder_directory ) ) ) {
+			return;
+		}
+
+		foreach ( array_keys( $cache_folder_directory ) as $entry ) {
+			if ( $this->filesystem->is_dir( $cache_folder_path . $entry ) ) {
+				continue;
+			}
+			$this->filesystem->delete( $cache_folder_path . $entry );
+		}
+	}
+
+	/**
+	 * Reset cache when changing the option.
+	 *
+	 * @param array $new new configurations.
+	 * @param array $old old configurations.
+	 *
+	 * @return array
+	 */
+	public function on_change_directory_for_default_language_clean_cache( $new, $old ) {
+		if ( ! is_array( $old ) || ! is_array( $new ) ) {
+			return $new;
+		}
+
+		if ( ! key_exists( 'urls', $old ) || ! key_exists( 'directory_for_default_language', $old['urls'] ) || ! key_exists( 'urls', $new ) || ! key_exists( 'directory_for_default_language', $new['urls'] ) || $new['urls']['directory_for_default_language'] === $old['urls']['directory_for_default_language'] ) {
+			return $new;
+		}
+
+		/**
+		 * Reset WP Rocket Preload.
+		 */
+		do_action( 'rocket_reset_preload' );
+		rocket_clean_domain();
+
+		return $new;
+	}
+
+	/**
+	 * Clear the cache when the option language directory is enabled.
+	 *
+	 * @return void
+	 */
+	public function maybe_clear_on_disable() {
+		$option = get_option( 'icl_sitepress_settings' );
+		if ( ! $option || ! is_array( $option ) || ! key_exists( 'urls', $option ) || ! key_exists( 'directory_for_default_language', $option['urls'] ) || false === $option['urls']['directory_for_default_language'] ) {
+			return;
+		}
+
+		/**
+		 * Reset WP Rocket Preload.
+		 */
+		do_action( 'rocket_reset_preload' );
+		rocket_clean_cache_dir();
+		rocket_clean_domain();
+	}
 }

tests/Fixtures/inc/ThirdParty/Plugins/I18n/WPML/onChangeDirectoryForDefaultLanguageCleanCache.php

@@ -0,0 +1,58 @@
+<?php
+return [
+    'noFieldsShouldNotClean' => [
+        'config' => [
+              'old' => [
+
+			  ],
+			  'new' => [
+
+			  ],
+			  'should_clean' => false,
+        ],
+        'expected' => [
+
+        ]
+    ],
+	'SameFieldsShouldNotClean' => [
+		'config' => [
+			'old' => [
+				'urls' => [
+					'directory_for_default_language' => false,
+				]
+			],
+			'new' => [
+				'urls' => [
+					'directory_for_default_language' => false,
+				]
+			],
+			'should_clean' => false,
+		],
+		'expected' => [
+				'urls' => [
+					'directory_for_default_language' => false,
+					]
+		]
+	],
+	'differentFieldsShouldClean' => [
+		'config' => [
+			'old' => [
+				'urls' => [
+					'directory_for_default_language' => false,
+				]
+			],
+			'new' => [
+				'urls' => [
+					'directory_for_default_language' => true,
+				]
+			],
+			'should_clean' => true,
+		],
+		'expected' => [
+			'urls' => [
+				'directory_for_default_language' => true,
+			]
+		]
+	],
+
+];

tests/Fixtures/inc/ThirdParty/Plugins/I18n/WPML/removeRootCachedFiles.php

@@ -0,0 +1,15 @@
+<?php
+return [
+	'removeFilesOnRoot' => [
+		'config' => [
+			'home_url' => 'https/example.org',
+			'host' => 'example.org',
+			'entries' => [
+				'entry_path' => [],
+			],
+			'path' => 'path',
+			'cache_path' => 'pathexample.org/',
+			'entry_path' => 'pathexample.org/entry_path',
+		],
+	],
+];

tests/Unit/inc/ThirdParty/Plugins/I18n/WPML/onChangeDirectoryForDefaultLanguageCleanCache.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace WP_Rocket\Tests\Unit\inc\ThirdParty\Plugins\I18n\WPML;
+
+use WP_Rocket\ThirdParty\Plugins\I18n\WPML;
+use Mockery;
+use WP_Filesystem_Direct;
+
+
+use WP_Rocket\Tests\Unit\TestCase;
+use Brain\Monkey\Functions;
+
+/**
+ * @covers \WP_Rocket\ThirdParty\Plugins\I18n\WPML::on_change_directory_for_default_language_clean_cache
+ */
+class Test_onChangeDirectoryForDefaultLanguageCleanCache extends TestCase {
+
+    /**
+    * @var WP_Filesystem_Direct
+    */
+    protected $filesystem;
+
+    /**
+    * @var WPML
+    */
+    protected $wpml;
+
+    public function set_up() {
+        parent::set_up();
+        $this->filesystem = Mockery::mock(WP_Filesystem_Direct::class);
+
+        $this->wpml = new WPML($this->filesystem);
+    }
+
+    /**
+     * @dataProvider configTestData
+     */
+    public function testShouldReturnAsExpected( $config, $expected )
+    {
+		if($config['should_clean']) {
+			Functions\expect('rocket_clean_domain');
+		} else {
+			Functions\expect('rocket_clean_domain')->never();
+		}
+        $this->assertSame($expected, $this->wpml->on_change_directory_for_default_language_clean_cache($config['new'], $config['old']));
+
+    }
+}

tests/Unit/inc/ThirdParty/Plugins/I18n/WPML/removeRootCachedFiles.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace WP_Rocket\Tests\Unit\inc\ThirdParty\Plugins\I18n\WPML;
+
+use Mockery;
+use WP_Filesystem_Direct;
+use WP_Rocket\Tests\Unit\TestCase;
+use WP_Rocket\ThirdParty\Plugins\I18n\WPML;
+use Brain\Monkey\Functions;
+use Brain\Monkey\Filters;
+
+class Test_RemoveRootCachedFiles extends TestCase
+{
+	protected $subscriber;
+	protected $filesystem;
+
+	protected function set_up()
+	{
+		parent::set_up();
+		$this->filesystem = Mockery::mock( WP_Filesystem_Direct::class );
+		$this->subscriber = new WPML($this->filesystem);
+	}
+
+	/**
+	 * @dataProvider configTestData
+	 */
+	public function testShouldAsExpected( $config ) {
+		Functions\expect('home_url')->andReturn($config['home_url']);
+		Functions\expect('wp_parse_url')->with($config['home_url'], PHP_URL_HOST)->andReturn($config['host']);
+		Functions\expect('_rocket_get_wp_rocket_cache_path')->with($config['home_url'], PHP_URL_HOST)->andReturn($config['path']);
+		$this->filesystem->expects()->dirlist($config['cache_path'])->andReturn($config['entries']);
+		$this->filesystem->expects()->is_dir($config['entry_path'])->andReturn(false);
+		$this->filesystem->expects()->delete($config['entry_path']);
+		$this->subscriber->remove_root_cached_files();
+	}
+}