Admin Bar: Replace the wp-admin url with the calypso ones for the def…

…ault interface

projects/packages/jetpack-mu-wpcom/src/features/wpcom-admin-bar/class-wpcom-admin-bar.php

@@ -0,0 +1,72 @@
+<?php
+/**
+ * The WordPress.com WP Admin Bar for the default interface.
+ *
+ * @package automattic/jetpack-mu-wpcom
+ */
+
+namespace Automattic\Jetpack\Jetpack_Mu_Wpcom;
+
+/**
+ * The WPCOM_Admin_Bar.
+ */
+class WPCOM_Admin_Bar extends \WP_Admin_Bar {
+	/**
+	 * The map of url from the wp admin to calypso.
+	 *
+	 * @var array
+	 */
+	private $map_wp_admin_url_to_calypso_url = array(
+		/**
+		 * Site menu
+		 */
+		'wp-admin/'                            => 'https://wordpress.com/home/%home_url%',
+		'wp-admin/plugins.php'                 => 'https://wordpress.com/plugins/%home_url%',
+		'wp-admin/themes.php'                  => 'https://wordpress.com/themes/%home_url%',
+
+		/**
+		 * +New menu
+		 */
+		'wp-admin/post-new.php'                => '/wp-admin/post-new.php?post_type=post&calypsoify=1',
+		'wp-admin/media-new.php'               => 'https://wordpress.com/media/%home_url%',
+		'wp-admin/post-new.php?post_type=page' => 'https://wordpress.com/page/%home_url%',
+		'wp-admin/user-new.php'                => 'https://wordpress.com/people/new/%home_url%',
+
+		/**
+		 * Profile menu
+		 */
+		'wp-admin/profile.php'                 => 'https://wordpress.com/me',
+	);
+
+	/**
+	 * Adds a node to the menu.
+	 *
+	 * @param array $args {
+	 *     Arguments for adding a node.
+	 *
+	 *     @type string $id     ID of the item.
+	 *     @type string $title  Title of the node.
+	 *     @type string $parent Optional. ID of the parent node.
+	 *     @type string $href   Optional. Link for the item.
+	 *     @type bool   $group  Optional. Whether or not the node is a group. Default false.
+	 *     @type array  $meta   Meta data including the following keys: 'html', 'class', 'rel', 'lang', 'dir',
+	 *                          'onclick', 'target', 'title', 'tabindex', 'menu_title'. Default empty.
+	 * }
+	 */
+	public function add_node( $args ) {
+		if ( empty( $args['href'] ) ) {
+			parent::add_node( $args );
+			return;
+		}
+
+		$home_url  = home_url( '/' );
+		$site_slug = wp_parse_url( $home_url, PHP_URL_HOST );
+		$href      = str_replace( $home_url, '', $args['href'] );
+		if ( array_key_exists( $href, $this->map_wp_admin_url_to_calypso_url ) ) {
+			$calypso_url  = $this->map_wp_admin_url_to_calypso_url[ $href ];
+			$args['href'] = str_replace( '%home_url%', $site_slug, $calypso_url );
+		}
+
+		parent::add_node( $args );
+	}
+}

projects/packages/jetpack-mu-wpcom/src/features/wpcom-admin-bar/wpcom-admin-bar.php

@@ -148,3 +148,19 @@ function wpcom_hide_help_center_menu() {
 	<?php
 }
 add_action( 'admin_head', 'wpcom_hide_help_center_menu' );
+
+/**
+ * Replaces the default admin bar class with our own.
+ *
+ * @param string $wp_admin_bar_class Admin bar class to use. Default 'WP_Admin_Bar'.
+ * @return string Name of the admin bar class.
+ */
+function wpcom_custom_admin_bar_class( $wp_admin_bar_class ) {
+	if ( get_option( 'wpcom_admin_interface' ) === 'wp-admin' ) {
+		return $wp_admin_bar_class;
+	}
+
+	require_once __DIR__ . '/class-wpcom-admin-bar.php';
+	return '\Automattic\Jetpack\Jetpack_Mu_Wpcom\WPCOM_Admin_Bar';
+}
+add_filter( 'wp_admin_bar_class', 'wpcom_custom_admin_bar_class' );