Make the Help Center runnable as a standalone plugin (#45354)

Author: alshakero

projects/packages/jetpack-mu-wpcom/changelog/allow-help-center-to-run-as-a-standalone-plugin

@@ -0,0 +1,4 @@
+Significance: patch
+Type: changed
+
+Changed the Help Center to be runnable as a standalone plugin

projects/packages/jetpack-mu-wpcom/src/features/help-center/class-help-center.php

@@ -8,7 +8,6 @@
 namespace A8C\FSE;
 
 use Automattic\Jetpack\Connection\Manager as Connection_Manager;
-use Automattic\Jetpack\Jetpack_Mu_Wpcom\Common;
 
 /**
  * Class Help_Center
@@ -28,6 +27,13 @@ class Help_Center {
 	 */
 	private $is_support_site = false;
 
+	/**
+	 * The purchases of the current site.
+	 *
+	 * @var array
+	 */
+	private $purchases = array();
+
 	/**
 	 * Help_Center constructor.
 	 */
@@ -38,8 +44,8 @@ public function __construct() {
 			return;
 		}
 
-		if ( ! function_exists( 'wpcom_get_site_purchases' ) ) {
-			return;
+		if ( function_exists( 'wpcom_get_site_purchases' ) ) {
+			$this->purchases = wp_list_filter( wpcom_get_site_purchases(), array( 'product_type' => 'bundle' ) );
 		}
 
 		add_action( 'rest_api_init', array( $this, 'register_rest_api' ) );
@@ -50,6 +56,28 @@ public function __construct() {
 		$this->is_support_site = defined( 'WPCOM_SUPPORT_BLOG_IDS' ) && in_array( get_current_blog_id(), (array) WPCOM_SUPPORT_BLOG_IDS, true );
 	}
 
+	/**
+	 * Returns ISO 639 conforming locale string of the current user.
+	 *
+	 * @return string ISO 639 locale string e.g. "en"
+	 */
+	private static function determine_iso_639_locale() {
+		$language = get_user_locale();
+		$language = strtolower( $language );
+
+		if ( in_array( $language, array( 'pt_br', 'pt-br', 'zh_tw', 'zh-tw', 'zh_cn', 'zh-cn' ), true ) ) {
+			$language = str_replace( '_', '-', $language );
+		} else {
+			$language = preg_replace( '/([-_].*)$/i', '', $language );
+		}
+
+		if ( empty( $language ) ) {
+			return 'en';
+		}
+
+		return $language;
+	}
+
 	/**
 	 * We prefer to use the Help Center instead of the Help tab.
 	 */
@@ -131,7 +159,7 @@ function ( $wp_admin_bar ) {
 		}
 
 		if ( $variant !== 'wp-admin-disconnected' && $variant !== 'gutenberg-disconnected' ) {
-			$locale = Common\determine_iso_639_locale();
+			$locale = self::determine_iso_639_locale();
 
 			if ( 'en' !== $locale ) {
 				// Load translations directly from widgets.wp.com.
@@ -202,7 +230,7 @@ function ( $wp_admin_bar ) {
 							'email'        => $user_email,
 						),
 						'site'        => $this->get_current_site(),
-						'locale'      => Common\determine_iso_639_locale(),
+						'locale'      => self::determine_iso_639_locale(),
 					)
 				),
 				'before'
@@ -246,7 +274,7 @@ public function get_current_site() {
 		}
 
 		$logo_id = get_option( 'site_logo' );
-		$bundles = wp_list_filter( wpcom_get_site_purchases(), array( 'product_type' => 'bundle' ) );
+		$bundles = $this->purchases;
 		$plan    = array_pop( $bundles );
 
 		$return_data = array(

projects/packages/jetpack-mu-wpcom/src/features/help-center/help-center.php

@@ -0,0 +1,12 @@
+<?php
+/**
+ * Help center
+ * This file is used to load the Help Center as a standalone plugin. It's not used by Jetpack.
+ *
+ * @package automattic/jetpack-mu-wpcom
+ */
+
+/**
+ * Load the Help Center class.
+ */
+require_once __DIR__ . '/class-help-center.php';