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<?php
/**
* The admin-specific functionality of the plugin.
*
* @link https://disqus.com
* @since 3.0
*
* @package Disqus
* @subpackage Disqus/admin
*/
/**
* The admin-specific functionality of the plugin.
*
* Defines the plugin name, version, and two examples hooks for how to
* enqueue the admin-specific stylesheet and JavaScript.
*
* @package Disqus
* @subpackage Disqus/admin
* @author Ryan Valentin <[email protected]>
*/
class Disqus_Admin {
/**
* The ID of this plugin.
*
* @since 3.0
* @access private
* @var string $disqus The ID of this plugin.
*/
private $disqus;
/**
* The version of this plugin.
*
* @since 3.0
* @access private
* @var string $version The current version of this plugin.
*/
private $version;
/**
* The unique Disqus forum shortname.
*
* @since 3.0
* @access private
* @var string $shortname The unique Disqus forum shortname.
*/
private $shortname;
/**
* Initialize the class and set its properties.
*
* @since 3.0
* @param string $disqus The name of this plugin.
* @param string $version The version of this plugin.
* @param string $shortname The configured Disqus shortname.
*/
public function __construct( $disqus, $version, $shortname ) {
$this->disqus = $disqus;
$this->version = $version;
$this->shortname = $shortname;
$this->ensure_sync_token();
}
/**
* Register the stylesheets for the admin area.
*
* @since 3.0
*/
public function enqueue_styles() {
/**
* This function is provided for demonstration purposes only.
*
* An instance of this class should be passed to the run() function
* defined in Disqus_Loader as all of the hooks are defined
* in that particular class.
*
* The Disqus_Loader will then create the relationship
* between the defined hooks and the functions defined in this
* class.
*/
wp_enqueue_style(
$this->disqus, plugin_dir_url( __FILE__ ) . 'css/disqus-admin.css',
array(),
$this->version,
'all'
);
}
/**
* Register the JavaScript for the admin area.
*
* @since 3.0
*/
public function enqueue_scripts() {
if ( ! isset( $_GET['page'] ) || 'disqus' !== $_GET['page'] ) {
return;
}
if ( ! function_exists( 'get_plugins' ) ) {
require_once ABSPATH . 'wp-admin/includes/plugin.php';
}
global $wp_version;
$admin_js_vars = array(
'rest' => array(
'base' => esc_url_raw( rest_url( '/' ) ),
'disqusBase' => 'disqus/v1/',
// Nonce is required so that the REST api permissions can recognize a user/check permissions.
'nonce' => wp_create_nonce( 'wp_rest' ),
),
'adminUrls' => array(
'disqus' => get_admin_url( null, 'admin.php?page=disqus' ),
'editComments' => get_admin_url( null, 'edit-comments.php' ),
),
'permissions' => array(
'canManageSettings' => current_user_can( 'manage_options' ),
),
'site' => array(
'name' => $this->get_site_name(),
'pluginVersion' => $this->version,
'allPlugins' => get_plugins(),
'phpVersion' => phpversion(),
'wordpressVersion' => $wp_version,
),
);
// TODO: Match language of the WordPress installation against any other localizations once they've been set up.
$language_code = 'en';
$file = $language_code;
$file .= '.disqus-admin.bundle.';
$file .= $this->version;
$file .= WP_DEBUG ? '.js' : '.min.js';
wp_enqueue_script(
$this->disqus . '_admin',
plugin_dir_url( __FILE__ ) . 'bundles/js/' . $file,
array(),
$this->version,
true
);
wp_localize_script( $this->disqus . '_admin', 'DISQUS_WP', $admin_js_vars );
}
/**
* Filter for the get_rest_url function which ensures REST URLs match admin hosts.
*
* @since 3.0
* @param string $rest_url The REST URL.
* @return string The filtered REST URL.
*/
public function dsq_filter_rest_url( $rest_url ) {
$rest_url_parts = parse_url( $rest_url );
if ( array_key_exists( 'host', $rest_url_parts ) ) {
$rest_host = $rest_url_parts['host'];
if ( array_key_exists( 'port', $rest_url_parts ) ) {
$rest_host .= ':' . $rest_url_parts['port'];
}
$current_host = isset( $_SERVER['HTTP_HOST'] ) ? $_SERVER['HTTP_HOST'] : $rest_host;
if ( $rest_host !== $current_host ) {
$rest_url = preg_replace( '/' . $rest_host . '/', $current_host, $rest_url, 1 );
}
}
return $rest_url;
}
/**
* Builds the admin toolbar menu with the various Disqus options
*
* @since 3.0
*/
public function dsq_contruct_admin_menu() {
if ( ! current_user_can( 'moderate_comments' ) ) {
return;
}
// Replace the existing WordPress comments menu item to prevent confusion
// about where to administer comments. The Disqus page will have a link to
// see WordPress comments.
remove_menu_page( 'edit-comments.php' );
add_menu_page(
'Disqus',
'Disqus',
'moderate_comments',
'disqus',
array( $this, 'dsq_render_admin_index' ),
'dashicons-admin-comments',
24
);
}
/**
* Builds the admin menu with the various Disqus options
*
* @since 3.0
* @param WP_Admin_Bar $wp_admin_bar Instance of the WP_Admin_Bar.
*/
public function dsq_construct_admin_bar( $wp_admin_bar ) {
if ( ! current_user_can( 'moderate_comments' ) ) {
return;
}
// Replace the existing WordPress comments menu item to prevent confusion
// about where to administer comments. The Disqus page will have a link to
// see WordPress comments.
$wp_admin_bar->remove_node( 'comments' );
$disqus_node_args = array(
'id' => 'disqus',
'title' => '<span class="ab-icon"></span>Disqus',
'href' => admin_url( 'admin.php?page=disqus' ),
'meta' => array(
'class' => 'disqus-menu-bar',
),
);
$disqus_moderate_node_args = array(
'parent' => 'disqus',
'id' => 'disqus_moderate',
'title' => 'Moderate',
'href' => $this->get_disqus_admin_url( 'moderate' ),
);
$disqus_analytics_node_args = array(
'parent' => 'disqus',
'id' => 'disqus_analytics',
'title' => 'Analytics',
'href' => $this->get_disqus_admin_url( 'analytics/comments' ),
);
$disqus_settings_node_args = array(
'parent' => 'disqus',
'id' => 'disqus_settings',
'title' => 'Settings',
'href' => $this->get_disqus_admin_url( 'settings/general' ),
);
$disqus_configure_node_args = array(
'parent' => 'disqus',
'id' => 'disqus_plugin_configure',
'title' => 'Configure Plugin',
'href' => admin_url( 'admin.php?page=disqus' ),
);
$wp_admin_bar->add_node( $disqus_node_args );
$wp_admin_bar->add_node( $disqus_moderate_node_args );
$wp_admin_bar->add_node( $disqus_analytics_node_args );
$wp_admin_bar->add_node( $disqus_settings_node_args );
$wp_admin_bar->add_node( $disqus_configure_node_args );
}
/**
* Adds a plugin link to the Disqus entry on the plugin page.
*
* @since 3.0
* @param array $links Links rendered for Disqus entry on the plugin page.
* @param string $file The filename of the link being filtered.
*/
public function dsq_plugin_action_links( $links, $file ) {
if ( 'disqus/disqus.php' === $file ) {
$plugin_links = array(
'<a href="' . esc_url( get_admin_url( null, 'admin.php?page=disqus' ) ) . '">' .
( '' === $this->shortname ? 'Install' : 'Configure' ) .
'</a>',
);
return array_merge( $links, $plugin_links );
}
return $links;
}
/**
* Renders the admin page view from a partial file
*
* @since 3.0
*/
public function dsq_render_admin_index() {
require_once plugin_dir_path( __FILE__ ) . 'partials/disqus-admin-partial.php';
}
/**
* Utility function get the admin URL with site's shortname.
*
* @since 3.0
* @access private
* @param string $path The path of the admin page to route to.
* @return string The fully-qualified admin URL for the given path.
*/
private function get_disqus_admin_url( $path = '' ) {
return 'https://' . $this->shortname . '.disqus.com/admin/' . ( strlen( $path ) ? $path . '/' : '' );
}
/**
* Utility function get the site's name for display in HTML markup.
*
* @since 3.0
* @access private
* @return string The escaped name for the given site.
*/
private function get_site_name() {
return esc_html( get_bloginfo( 'name' ) );
}
/**
* Checks the stored `disqus_sync_token` and generates a new one if it doesn't exist.
* This is used as a secret key for authenticating requests through the REST API.
*
* @since 3.0.8
* @access private
*/
private function ensure_sync_token() {
$existing_token = get_option( 'disqus_sync_token', null );
if ( empty( $existing_token ) ) {
update_option( 'disqus_sync_token', bin2hex( random_bytes( 16 ) ) );
}
}
}