Feat/rucss

package.json

@@ -1,6 +1,6 @@
 {
     "name": "wp-rocket-smart-preload",
-    "version": "1.1.0",
+    "version": "1.2.0",
     "description": "Smart preload for WP Rocket",
     "type": "module",
     "scripts": {

src/settings-page.php

@@ -5,13 +5,27 @@ function wp_rocket_smart_preload_settings_page()
     $urls_to_always_include = get_option('rsp_pages_to_always_include', []);
     $sitemap_page_limit = get_option('rsp_sitemap_page_limit', RSP_SITEMAP_PAGE_DEFAULT_LIMIT);
     $deactivate_ip_protection = get_option('rsp_deactivate_ip_protection', 0);
+    $apply_rucss = get_option('rsp_apply_rucss', 0);
 ?>
     <div class="wrap">
         <h2>WP Rocket - Smart Preload Settings</h2>
         <form id="plugin-form" method="post" action="<?php echo esc_url(admin_url('admin-post.php')); ?>">
             <?php wp_nonce_field('save_settings', 'wp_rocket_nonce'); ?>
 
             <table class="form-table">
+                <tr valign="top">
+                    <th scope="row">Apply to Remove Unused CSS</th>
+                    <td>
+                        <label class="switch">
+                            <input type="checkbox" id="apply-rucss" name="apply-rucss" <?php checked($apply_rucss, '1'); ?>>
+                            <span class="slider round"></span>
+                        </label>
+                        <p class="description">Enable to also limit Remove Unused CSS to be applied to the most visited pages.
+                            <br>
+                            <strong>Note:</strong> Home page URL is always included.
+                        </p>
+                    </td>
+                </tr>
                 <tr valign="top">
                     <th scope="row">Always Preload These URLs</th>
                     <td>
@@ -118,11 +132,12 @@ function save_wp_rocket_smart_preload_settings()
 
     // Sanitize IP Protection
     $ip_protection = isset($_POST['ip-protection']) ? '0' : '1';
-
+    $apply_rucss = isset($_POST['apply-rucss']) ? '1' : '0';
     // Save settings
     update_option('rsp_pages_to_always_include', $urls);
     update_option('rsp_sitemap_page_limit', $url_limit);
     update_option('rsp_deactivate_ip_protection', $ip_protection);
+    update_option('rsp_apply_rucss', $apply_rucss);
 
     // Redirect back to the settings page
     $redirect_url = add_query_arg('page', 'wp-rocket-smart-preload', admin_url('options-general.php'));

src/wp-rocket-smart-preload.php

@@ -71,6 +71,9 @@
 add_filter('rsp_deactivate_ip_protection', function ($deactivate_ip_protection) {
     return $deactivate_ip_protection; // Edit this (return true) to deactivate the IP protection feature. (This feature prevents counting fake visits due to multiple page refreshes from the same IP address)
 }, 0);
+add_filter('rsp_apply_rucss', function ($apply_rucss) {
+    return $apply_rucss; // Edit this (return true) to apply the Remove Unused CSS feature to the most visited pages.
+}, 0);
 // STOP EDITING
 
 
@@ -265,6 +268,7 @@ function rsp_remove_database_options()
     delete_option('rsp_pages_to_always_include');
     delete_option('rsp_sitemap_page_limit');
     delete_option('rsp_deactivate_ip_protection');
+    delete_option('rsp_apply_rucss');
 }
 /**
  * Removes transients related to WP Rocket - Smart Preload.
@@ -663,6 +667,35 @@ function vaidate_accepted_frequencies($value)
     $accepted_values = ['hourly', 'twicedaily', 'daily', 'weekly'];
     return in_array($value, $accepted_values, true) ? $value : 'daily';
 }
+
+/**
+ * Applies Smart Preload to the Remove Unused CSS (RUCSS) process.
+ *
+ * Prevents the URL to be added to RUCSS table if not a part of the most visited pages.
+ *
+ * @since 1.2.0
+ *
+ * @return int
+ */
+function rsp_apply_to_rucss($value)
+{
+    if (!is_admin() || !wp_doing_ajax() || !is_404()) {
+        return $value;
+    }
+    $apply_rucss = (bool) apply_filters('rsp_apply_rucss', get_option('rsp_apply_rucss', 0));
+    if (!$apply_rucss) {
+        return $value;
+    }
+    $url =  untrailingslashit("{$_SERVER['HTTP_HOST']}{$_SERVER['REQUEST_URI']}");
+    $sitemap_page_limit = apply_filters('rsp_sitemap_page_limit', get_option('rsp_sitemap_page_limit', RSP_SITEMAP_PAGE_DEFAULT_LIMIT));
+    $sitemap_page_limit = validate_positive_integer($sitemap_page_limit, RSP_SITEMAP_PAGE_DEFAULT_LIMIT);
+    $urls_to_preload = rsp_get_urls_to_preload($sitemap_page_limit);
+    if (! in_array($url, $urls_to_preload, true)) {
+        return 0;
+    }
+    return $value;
+}
+add_filter('pre_get_rocket_option_remove_unused_css', 'rsp_apply_to_rucss');
 /**
  * TODO
  * - Implement: