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<?php

/**
 * Main bbPress Admin Class
 *
 * @package bbPress
 * @subpackage Administration
 */

// Exit if accessed directly
defined( 'ABSPATH' ) || exit;

if ( ! class_exists( 'BBP_Admin' ) ) :
/**
 * Loads bbPress plugin admin area
 *
 * @package bbPress
 * @subpackage Administration
 * @since 2.0.0 bbPress (r2464)
 */
class BBP_Admin {

/** Directory *************************************************************/

/**
	 * @var string Path to the bbPress admin directory
	 */
	public $admin_dir = '';

/** URLs ******************************************************************/

/**
	 * @var string URL to the bbPress admin directory
	 */
	public $admin_url = '';

/**
	 * @var string URL to the bbPress images directory
	 */
	public $images_url = '';

/**
	 * @var string URL to the bbPress admin styles directory
	 */
	public $styles_url = '';

/**
	 * @var string URL to the bbPress admin css directory
	 */
	public $css_url = '';

/**
	 * @var string URL to the bbPress admin js directory
	 */
	public $js_url = '';

/** Capability ************************************************************/

/**
	 * @var bool Minimum capability to access Tools and Settings
	 */
	public $minimum_capability = 'keep_gate';

/** Separator *************************************************************/

/**
	 * @var bool Whether or not to add an extra top level menu separator
	 */
	public $show_separator = false;

/** Tools *****************************************************************/

/**
	 * @var array Array of available repair tools
	 */
	public $tools = array();

/** Notices ***************************************************************/

/**
	 * @var array Array of notices to output to the current user
	 */
	public $notices = array();

/** Functions *************************************************************/

/**
	 * The main bbPress admin loader
	 *
	 * @since 2.0.0 bbPress (r2515)
	 */
	public function __construct() {
		$this->setup_globals();
		$this->includes();
		$this->setup_actions();
	}

/**
	 * Admin globals
	 *
	 * @since 2.0.0 bbPress (r2646)
	 *
	 * @access private
	 */
	private function setup_globals() {
		$bbp              = bbpress();
		$this->admin_dir  = trailingslashit( $bbp->includes_dir . 'admin'      ); // Admin path
		$this->admin_url  = trailingslashit( $bbp->includes_url . 'admin'      ); // Admin url

// Assets
		$this->css_url    = trailingslashit( $this->admin_url   . 'assets/css' ); // Admin css URL
		$this->js_url     = trailingslashit( $this->admin_url   . 'assets/js'  ); // Admin js URL
		$this->styles_url = trailingslashit( $this->admin_url   . 'styles'     ); // Admin styles URL

// Deprecated
		$this->images_url = trailingslashit( $this->admin_url   . 'images'     ); // Admin images URL
	}

/**
	 * Include required files
	 *
	 * @since 2.0.0 bbPress (r2646)
	 *
	 * @access private
	 */
	private function includes() {

// Tools
		require $this->admin_dir . 'tools.php';
		require $this->admin_dir . 'tools/common.php';
		require $this->admin_dir . 'tools/converter.php';
		require $this->admin_dir . 'tools/repair.php';
		require $this->admin_dir . 'tools/upgrade.php';
		require $this->admin_dir . 'tools/reset.php';
		require $this->admin_dir . 'tools/help.php';

// Components
		require $this->admin_dir . 'settings.php';
		require $this->admin_dir . 'common.php';
		require $this->admin_dir . 'metaboxes.php';
		require $this->admin_dir . 'forums.php';
		require $this->admin_dir . 'topics.php';
		require $this->admin_dir . 'replies.php';
		require $this->admin_dir . 'users.php';
	}

/**
	 * Setup the admin hooks, actions and filters
	 *
	 * @since 2.0.0 bbPress (r2646)
	 *
	 * @access private
	 */
	private function setup_actions() {

// Bail to prevent interfering with the deactivation process
		if ( bbp_is_deactivation() ) {
			return;
		}

/** General Actions ***************************************************/

add_action( 'bbp_admin_menu',              array( $this, 'admin_menus'             ) );
		add_action( 'bbp_admin_head',              array( $this, 'admin_head'              ) );
		add_action( 'bbp_register_admin_styles',   array( $this, 'register_admin_styles'   ) );
		add_action( 'bbp_register_admin_scripts',  array( $this, 'register_admin_scripts'  ) );
		add_action( 'bbp_register_admin_settings', array( $this, 'register_admin_settings' ) );

// Enqueue styles & scripts
		add_action( 'admin_enqueue_scripts',       array( $this, 'enqueue_styles'  ) );
		add_action( 'admin_enqueue_scripts',       array( $this, 'enqueue_scripts' ) );

/** Notices ***********************************************************/

add_action( 'bbp_admin_init',    array( $this, 'setup_notices'  ) );
		add_action( 'bbp_admin_init',    array( $this, 'hide_notices'   ) );
		add_action( 'bbp_admin_notices', array( $this, 'output_notices' ) );

/** Upgrades **********************************************************/

add_action( 'bbp_admin_init', array( $this, 'add_upgrade_count' ) );

/** Ajax **************************************************************/

// No _nopriv_ equivalent - users must be logged in
		add_action( 'wp_ajax_bbp_suggest_topic', array( $this, 'suggest_topic' ) );
		add_action( 'wp_ajax_bbp_suggest_user',  array( $this, 'suggest_user'  ) );

/** Filters ***********************************************************/

// Modify admin links
		add_filter( 'plugin_action_links', array( $this, 'modify_plugin_action_links' ), 10, 2 );

// Map settings capabilities
		add_filter( 'bbp_map_meta_caps',   array( $this, 'map_settings_meta_caps' ), 10, 4 );

// Allow keymasters to save forums settings
		add_filter( 'option_page_capability_bbpress',  array( $this, 'option_page_capability_bbpress' ) );

/** Network Admin *****************************************************/

// Add menu item to settings menu
		add_action( 'network_admin_menu',  array( $this, 'network_admin_menus' ) );

/** Dependencies ******************************************************/

// Allow plugins to modify these actions
		do_action_ref_array( 'bbp_admin_loaded', array( &$this ) );
	}

/**
	 * Setup general admin area notices.
	 *
	 * @since 2.6.0 bbPress (r6701)
	 */
	public function setup_notices() {

// Avoid malformed notices variable
		if ( ! is_array( $this->notices ) ) {
			$this->notices = array();
		}

// Get page
		$page = ! empty( $_GET['page'] )
			? sanitize_key( $_GET['page'] )
			: false;

// Pending database upgrades!
		if ( ( 'bbp-upgrade' !== $page ) && bbp_get_pending_upgrades() && current_user_can( 'bbp_tools_upgrade_page' ) ) {

// Link to upgrade page
			$upgrade_url  = add_query_arg( array( 'page' => 'bbp-upgrade', 'status' => 'pending' ), admin_url( 'tools.php' ) );
			$dismiss_url  = wp_nonce_url( add_query_arg( array( 'bbp-hide-notice' => 'bbp-skip-upgrades' ) ), 'bbp-hide-notice' );
			$upgrade_link = '<a href="' . esc_url( $upgrade_url ) . '">' . esc_html__( 'Learn More',   'bbpress' ) . '</a>';
			$dismiss_link = '<a href="' . esc_url( $dismiss_url ) . '">' . esc_html__( 'Hide For Now', 'bbpress' ) . '</a>';
			$bbp_dashicon = '<span class="bbpress-logo-icon"></span>';
			$message      = $bbp_dashicon . sprintf(
				esc_html__( 'bbPress requires a manual database upgrade. %s or %s.', 'bbpress' ),
				$upgrade_link,
				$dismiss_link
			);

// Add tools feedback
			$this->add_notice( $message, 'notice-bbpress', false );
		}
	}

/**
	 * Handle hiding of general admin area notices.
	 *
	 * @since 2.6.0 bbPress (r6701)
	 */
	public function hide_notices() {

// Hiding a notice?
		$hiding_notice = ! empty( $_GET['bbp-hide-notice'] )
			? sanitize_key( $_GET['bbp-hide-notice'] )
			: false;

// Bail if not hiding a notice
		if ( empty( $hiding_notice ) ) {
			return;
		}

// Bail if user cannot visit upgrade page (cannot clear notice either!)
		if ( ! current_user_can( 'bbp_tools_upgrade_page' ) ) {
			return;
		}

// Check the admin referer
		check_admin_referer( 'bbp-hide-notice' );

// Maybe delete notices
		switch ( $hiding_notice ) {

// Skipped upgrade notice
			case 'bbp-skip-upgrades' :
				bbp_clear_pending_upgrades();
				break;
		}
	}

/**
	 * Output all admin area notices
	 *
	 * @since 2.6.0 bbPress (r6771)
	 */
	public function output_notices() {

// Bail if no notices
		if ( empty( $this->notices ) || ! is_array( $this->notices ) ) {
			return;
		}

// Start an output buffer
		ob_start();

// Loop through notices, and add them to buffer
		foreach ( $this->notices as $notice ) {
			echo $notice;
		}

// Output the current buffer
		echo ob_get_clean();
	}

/**
	 * Add a notice to the notices array
	 *
	 * @since 2.6.0 bbPress (r6771)
	 *
	 * @param string|WP_Error $message        A message to be displayed or {@link WP_Error}
	 * @param string          $class          Optional. A class to be added to the message div
	 * @param bool            $is_dismissible Optional. True to dismiss, false to persist
	 *
	 * @return void
	 */
	public function add_notice( $message, $class = false, $is_dismissible = true ) {

// One message as string
		if ( is_string( $message ) ) {
			$message       = '<p>' . $this->esc_notice( $message ) . '</p>';
			$default_class ='updated';

// Messages as objects
		} elseif ( is_wp_error( $message ) ) {
			$errors  = $message->get_error_messages();

switch ( count( $errors ) ) {
				case 0:
					return false;

case 1:
					$message = '<p>' . $this->esc_notice( $errors[0] ) . '</p>';
					break;

default:
					$escaped = array_map( array( $this, 'esc_notice' ), $errors );
					$message = '<ul>' . "\n\t" . '<li>' . implode( '</li>' . "\n\t" . '<li>', $escaped ) . '</li>' . "\n" . '</ul>';
					break;
			}

$default_class = 'is-error';

// Message is an unknown format, so bail
		} else {
			return false;
		}

// CSS Classes
		$classes = ! empty( $class )
			? array( $class )
			: array( $default_class );

// Add dismissible class
		if ( ! empty( $is_dismissible ) ) {
			array_push( $classes, 'is-dismissible' );
		}

// Assemble the message
		$message = '<div id="message" class="notice ' . implode( ' ', array_map( 'sanitize_html_class', $classes ) ) . '">' . $message . '</div>';
		$message = str_replace( "'", "\'", $message );

// Avoid malformed notices variable
		if ( ! is_array( $this->notices ) ) {
			$this->notices = array();
		}

// Add notice to notices array
		$this->notices[] = $message;
	}

/**
	 * Escape message string output
	 *
	 * @since 2.6.0 bbPress (r6775)
	 *
	 * @param string $message
	 *
	 * @return string
	 */
	private function esc_notice( $message = '' ) {

// Get allowed HTML
		$tags = wp_kses_allowed_html();

// Allow spans with classes in notices
		$tags['span'] = array(
			'class' => 1
		);

// Parse the message and remove unsafe tags
		$text = wp_kses( $message, $tags );

// Return the message text
		return $text;
	}

/**
	 * Maybe append the pending upgrade count to the "Tools" menu.
	 *
	 * @since 2.6.0 bbPress (r6896)
	 *
	 * @global menu $menu
	 */
	public function add_upgrade_count() {
		global $menu;

// Skip if no menu (AJAX, shortinit, etc...)
		if ( empty( $menu ) ) {
			return;
		}

// Loop through menus, and maybe add the upgrade count
		foreach ( $menu as $menu_index => $menu_item ) {
			$found = array_search( 'tools.php', $menu_item, true );

if ( false !== $found ) {
				$menu[ $menu_index ][ 0 ] = bbp_maybe_append_pending_upgrade_count( $menu[ $menu_index ][ 0 ] );
				continue;
			}
		}
	}

/**
	 * Add the admin menus
	 *
	 * @since 2.0.0 bbPress (r2646)
	 */
	public function admin_menus() {

// Default hooks array
		$hooks = array();

// Get the tools pages
		$tools = bbp_get_tools_admin_pages();

// Loop through tools and check
		if ( ! empty( $tools ) ) {
			foreach ( $tools as $tool ) {

// Try to add the admin page
				$page = add_management_page(
					$tool['name'],
					$tool['name'],
					$tool['cap'],
					$tool['page'],
					$tool['func']
				);

// Add page to hook if user can view it
				if ( false !== $page ) {
					$hooks[] = $page;
				}
			}

// Fudge the highlighted subnav item when on a bbPress admin page
			if ( ! empty( $hooks ) ) {
				foreach ( $hooks as $hook ) {
					add_action( "admin_head-{$hook}", 'bbp_tools_modify_menu_highlight' );
				}
			}
		}

// Forums Tools Root
		add_management_page(
			esc_html__( 'Forums', 'bbpress' ),
			bbp_maybe_append_pending_upgrade_count( esc_html__( 'Forums', 'bbpress' ) ),
			'bbp_tools_page',
			'bbp-repair',
			'bbp_admin_repair_page'
		);

// Are settings enabled?
		if ( 'basic' === bbp_settings_integration() ) {
			add_options_page(
				esc_html__( 'Forums',  'bbpress' ),
				esc_html__( 'Forums',  'bbpress' ),
				'bbp_settings_page',
				'bbpress',
				'bbp_admin_settings'
			);
		}

// These are later removed in admin_head
		if ( current_user_can( 'bbp_about_page' ) ) {

// About
			add_dashboard_page(
				esc_html__( 'Welcome to bbPress',  'bbpress' ),
				esc_html__( 'Welcome to bbPress',  'bbpress' ),
				'bbp_about_page',
				'bbp-about',
				array( $this, 'about_screen' )
			);

// Credits
			add_dashboard_page(
				esc_html__( 'Welcome to bbPress',  'bbpress' ),
				esc_html__( 'Welcome to bbPress',  'bbpress' ),
				'bbp_about_page',
				'bbp-credits',
				array( $this, 'credits_screen' )
			);
		}

// Bail if plugin is not network activated
		if ( ! is_plugin_active_for_network( bbpress()->basename ) ) {
			return;
		}

add_submenu_page(
			'index.php',
			esc_html__( 'Update Forums', 'bbpress' ),
			esc_html__( 'Update Forums', 'bbpress' ),
			'manage_network',
			'bbp-update',
			array( $this, 'update_screen' )
		);
	}

/**
	 * Add the network admin menus
	 *
	 * @since 2.1.0 bbPress (r3689)
	 */
	public function network_admin_menus() {

// Bail if plugin is not network activated
		if ( ! is_plugin_active_for_network( bbpress()->basename ) ) {
			return;
		}

add_submenu_page(
			'upgrade.php',
			esc_html__( 'Update Forums', 'bbpress' ),
			esc_html__( 'Update Forums', 'bbpress' ),
			'manage_network',
			'bbpress-update',
			array( $this, 'network_update_screen' )
		);
	}

/**
	 * Register the settings
	 *
	 * @since 2.0.0 bbPress (r2737)
	 *
	 * @todo Put fields into multidimensional array
	 */
	public static function register_admin_settings() {

// Bail if no sections available
		$sections = bbp_admin_get_settings_sections();
		if ( empty( $sections ) ) {
			return false;
		}

// Are we using settings integration?
		$settings_integration = bbp_settings_integration();

// Loop through sections
		foreach ( (array) $sections as $section_id => $section ) {

// Only proceed if current user can see this section
			if ( ! current_user_can( $section_id ) ) {
				continue;
			}

// Only add section and fields if section has fields
			$fields = bbp_admin_get_settings_fields_for_section( $section_id );
			if ( empty( $fields ) ) {
				continue;
			}

// Overload the converter page
			if ( ! empty( $section['page'] ) && ( ( 'converter' === $section['page'] ) || ( 'deep' === $settings_integration ) ) ) {
				$page = $section['page'];
			} else {
				$page = 'bbpress';
			}

// Add the section
			add_settings_section( $section_id, $section['title'], $section['callback'], $page );

// Loop through fields for this section
			foreach ( (array) $fields as $field_id => $field ) {

// Skip field if user is not capable
				if ( ! empty( $field['capability'] ) && ! current_user_can( $field['capability'] ) ) {
					continue;
				}

// Add the field
				if ( ! empty( $field['callback'] ) && ! empty( $field['title'] ) ) {
					add_settings_field( $field_id, $field['title'], $field['callback'], $page, $section_id, $field['args'] );
				}

// Register the setting
				register_setting( $page, $field_id, $field['sanitize_callback'] );
			}
		}
	}

/**
	 * Maps settings capabilities
	 *
	 * @since 2.2.0 bbPress (r4242)
	 *
	 * @param array $caps Capabilities for meta capability
	 * @param string $cap Capability name
	 * @param int $user_id User id
	 * @param array $args Arguments
	 *
	 * @return array Actual capabilities for meta capability
	 */
	public static function map_settings_meta_caps( $caps = array(), $cap = '', $user_id = 0, $args = array() ) {

// What capability is being checked?
		switch ( $cap ) {

// Pages
			case 'bbp_about_page'            : // About and Credits
			case 'bbp_tools_page'            : // Tools Page
			case 'bbp_tools_repair_page'     : // Tools - Repair Page
			case 'bbp_tools_upgrade_page'    : // Tools - Upgrade Page
			case 'bbp_tools_import_page'     : // Tools - Import Page
			case 'bbp_tools_reset_page'      : // Tools - Reset Page
			case 'bbp_settings_page'         : // Settings Page

// Converter Sections
			case 'bbp_converter_connection'  : // Converter - Connection
			case 'bbp_converter_options'     : // Converter - Options

// Settings Sections
			case 'bbp_settings_users'        : // Settings - Users
			case 'bbp_settings_features'     : // Settings - Features
			case 'bbp_settings_theme_compat' : // Settings - Theme compat
			case 'bbp_settings_root_slugs'   : // Settings - Root slugs
			case 'bbp_settings_single_slugs' : // Settings - Single slugs
			case 'bbp_settings_user_slugs'   : // Settings - User slugs
			case 'bbp_settings_per_page'     : // Settings - Per page
			case 'bbp_settings_per_rss_page' : // Settings - Per RSS page
				$caps = array( bbp_admin()->minimum_capability );
				break;

// Extend - BuddyPress
			case 'bbp_settings_buddypress' :
				if ( ( is_plugin_active( 'buddypress/bp-loader.php' ) && defined( 'BP_VERSION' ) && bp_is_root_blog() ) && is_super_admin() ) {
					$caps = array( bbp_admin()->minimum_capability );
				} else {
					$caps = array( 'do_not_allow' );
				}

break;

// Extend - Akismet
			case 'bbp_settings_akismet' :
				if ( ( is_plugin_active( 'akismet/akismet.php' ) && defined( 'AKISMET_VERSION' ) ) && is_super_admin() ) {
					$caps = array( bbp_admin()->minimum_capability );
				} else {
					$caps = array( 'do_not_allow' );
				}

break;
		}

// Filter & return
		return (array) apply_filters( 'bbp_map_settings_meta_caps', $caps, $cap, $user_id, $args );
	}

/**
	 * Register the importers
	 *
	 * @since 2.0.0 bbPress (r2737)
	 */
	public function register_importers() {

// Leave if we're not in the import section
		if ( ! defined( 'WP_LOAD_IMPORTERS' ) ) {
			return;
		}

// Load Importer API
		require_once ABSPATH . 'wp-admin/includes/import.php';

// Load our importers
		$importers = apply_filters( 'bbp_importers', array( 'bbpress' ) );

// Loop through included importers
		foreach ( $importers as $importer ) {

// Allow custom importer directory
			$import_dir  = apply_filters( 'bbp_importer_path', $this->admin_dir . 'importers', $importer );

// Compile the importer path
			$import_file = trailingslashit( $import_dir ) . $importer . '.php';

// If the file exists, include it
			if ( file_exists( $import_file ) ) {
				require $import_file;
			}
		}
	}

/**
	 * Add Settings link to plugins area
	 *
	 * @since 2.0.0 bbPress (r2737)
	 *
	 * @param array $links Links array in which we would prepend our link
	 * @param string $file Current plugin basename
	 * @return array Processed links
	 */
	public static function modify_plugin_action_links( $links, $file ) {

// Return normal links if not bbPress
		if ( plugin_basename( bbpress()->basename ) !== $file ) {
			return $links;
		}

// New links to merge into existing links
		$new_links = array();

// Settings page link
		if ( current_user_can( 'bbp_settings_page' ) ) {
			$new_links['settings'] = '<a href="' . esc_url( add_query_arg( array( 'page' => 'bbpress'   ), admin_url( 'options-general.php' ) ) ) . '">' . esc_html__( 'Settings', 'bbpress' ) . '</a>';
		}

// About page link
		if ( current_user_can( 'bbp_about_page' ) ) {
			$new_links['about']    = '<a href="' . esc_url( add_query_arg( array( 'page' => 'bbp-about' ), admin_url( 'index.php'           ) ) ) . '">' . esc_html__( 'About',    'bbpress' ) . '</a>';
		}

// Add a few links to the existing links array
		return array_merge( $links, $new_links );
	}

/**
	 * Enqueue any admin scripts we might need
	 *
	 * @since 2.2.0 bbPress (r4260)
	 */
	public function enqueue_scripts() {

// Get the current screen
		$current_screen = get_current_screen();

// Enqueue suggest for forum/topic/reply autocompletes
		wp_enqueue_script( 'suggest' );

// Post type checker (only topics and replies)
		if ( 'post' === $current_screen->base ) {
			switch ( $current_screen->post_type ) {
				case bbp_get_reply_post_type() :
				case bbp_get_topic_post_type() :

// Enqueue the common JS
					wp_enqueue_script( 'bbp-admin-common-js' );

// Topics admin
					if ( bbp_get_topic_post_type() === $current_screen->post_type ) {
						wp_enqueue_script( 'bbp-admin-topics-js' );

// Replies admin
					} elseif ( bbp_get_reply_post_type() === $current_screen->post_type ) {
						wp_enqueue_script( 'bbp-admin-replies-js' );
					}

break;
			}

// Enqueue the badge JS
		} elseif ( in_array( $current_screen->id, array( 'dashboard_page_bbp-about', 'dashboard_page_bbp-credits' ), true ) ) {
			wp_enqueue_script( 'bbp-admin-badge-js' );
		}
	}

/**
	 * Enqueue any admin scripts we might need
	 *
	 * @since 2.6.0 bbPress (r5224)
	 */
	public function enqueue_styles() {
		wp_enqueue_style( 'bbp-admin-css' );
	}

/**
	 * Remove the individual recount and converter menus.
	 * They are grouped together by h2 tabs
	 *
	 * @since 2.0.0 bbPress (r2464)
	 */
	public function admin_head() {

// Tools
		foreach ( bbp_get_tools_admin_pages() as $tool ) {
			remove_submenu_page( 'tools.php', $tool['page'] );
		}

// About
		remove_submenu_page( 'index.php', 'bbp-about'   );
		remove_submenu_page( 'index.php', 'bbp-credits' );
	}

/**
	 * Registers the bbPress admin styling and color schemes
	 *
	 * Because wp-content can exist outside of the WordPress root, there is no
	 * way to be certain what the relative path of admin images is.
	 *
	 * @since 2.6.0 bbPress (r2521)
	 */
	public function register_admin_styles() {

// RTL and/or minified
		$suffix  = is_rtl() ? '-rtl' : '';
		$suffix .= defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';

// Get the version to use for JS
		$version = bbp_get_version();

// Register admin CSS with dashicons dependency
		wp_register_style( 'bbp-admin-css', $this->css_url . 'admin' . $suffix . '.css', array( 'dashicons' ), $version );

// Color schemes are not available when running out of src
		if ( false !== strpos( plugin_basename( bbpress()->file ), 'src' ) ) {
			return;
		}

// Mint
		wp_admin_css_color(
			'bbp-mint',
			esc_html_x( 'Mint', 'admin color scheme', 'bbpress' ),
			$this->styles_url . 'mint/colors' . $suffix . '.css',
			array( '#4f6d59', '#33834e', '#5FB37C', '#81c498' ),
			array( 'base' => '#f1f3f2', 'focus' => '#fff', 'current' => '#fff' )
		);

// Evergreen
		wp_admin_css_color(
			'bbp-evergreen',
			esc_html_x( 'Evergreen', 'admin color scheme', 'bbpress' ),
			$this->styles_url . 'evergreen/colors' . $suffix . '.css',
			array( '#324d3a', '#446950', '#56b274', '#324d3a' ),
			array( 'base' => '#f1f3f2', 'focus' => '#fff', 'current' => '#fff' )
		);
	}

/**
	 * Registers the bbPress admin color schemes
	 *
	 * Because wp-content can exist outside of the WordPress root there is no
	 * way to be certain what the relative path of the admin images is.
	 * We are including the two most common configurations here, just in case.
	 *
	 * @since 2.6.0 bbPress (r2521)
	 */
	public function register_admin_scripts() {

// Minified
		$suffix  = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';

// Get the version to use for JS
		$version = bbp_get_version();

// Header JS
		wp_register_script( 'bbp-admin-common-js',  $this->js_url . 'common'    . $suffix . '.js', array( 'jquery', 'suggest'              ), $version );
		wp_register_script( 'bbp-admin-topics-js',  $this->js_url . 'topics'    . $suffix . '.js', array( 'jquery'                         ), $version );
		wp_register_script( 'bbp-admin-replies-js', $this->js_url . 'replies'   . $suffix . '.js', array( 'jquery', 'suggest'              ), $version );
		wp_register_script( 'bbp-converter',        $this->js_url . 'converter' . $suffix . '.js', array( 'jquery', 'postbox', 'dashboard' ), $version );

// Footer JS
		wp_register_script( 'bbp-admin-badge-js',   $this->js_url . 'badge' . $suffix . '.js', array(), $version, true );
	}

/**
	 * Allow keymaster role to save Forums settings
	 *
	 * @since 2.3.0 bbPress (r4678)
	 *
	 * @param string $capability
	 * @return string Return minimum capability
	 */
	public function option_page_capability_bbpress( $capability = 'manage_options' ) {
		$capability = $this->minimum_capability;
		return $capability;
	}

/** Ajax ******************************************************************/

/**
	 * Ajax action for facilitating the forum auto-suggest
	 *
	 * @since 2.2.0 bbPress (r4261)
	 */
	public function suggest_topic() {

// Do some very basic request checking
		$request = ! empty( $_REQUEST['q'] )
			? trim( $_REQUEST['q'] )
			: '';

// Bail early if empty request
		if ( empty( $request ) ) {
			wp_die();
		}

// Bail if user cannot moderate
		if ( ! current_user_can( 'moderate' ) ) {
			wp_die();
		}

// Check the ajax nonce
		check_ajax_referer( 'bbp_suggest_topic_nonce' );

// Allow the maximum number of results to be filtered
		$number = (int) apply_filters( 'bbp_suggest_topic_count', 10 );

// Try to get some topics
		$topics = get_posts( array(
			's'              => bbp_db()->esc_like( $_REQUEST['q'] ),
			'post_type'      => bbp_get_topic_post_type(),
			'posts_per_page' => $number,

// Performance
			'nopaging'               => true,
			'suppress_filters'       => true,
			'update_post_term_cache' => false,
			'update_post_meta_cache' => false,
			'ignore_sticky_posts'    => true,
			'no_found_rows'          => true
		) );

// If we found some topics, loop through and display them
		if ( ! empty( $topics ) ) {
			foreach ( (array) $topics as $post ) {
				printf( esc_html__( '%1$s - %2$s', 'bbpress' ), bbp_get_topic_id( $post->ID ), bbp_get_topic_title( $post->ID ) . "\n" );
			}
		}
		die();
	}

/**
	 * Ajax action for facilitating the topic and reply author auto-suggest
	 *
	 * @since 2.4.0 bbPress (r5014)
	 */
	public function suggest_user() {

// Do some very basic request checking
		$request = ! empty( $_REQUEST['q'] )
			? trim( $_REQUEST['q'] )
			: '';

// Bail early if empty request
		if ( empty( $request ) ) {
			wp_die();
		}

// Bail if user cannot moderate
		if ( ! current_user_can( 'moderate' ) ) {
			wp_die();
		}

// Check the ajax nonce
		check_ajax_referer( 'bbp_suggest_user_nonce' );

// Fields to retrieve & search by
		$fields = $search = array( 'ID', 'user_nicename' );

// Keymasters & Super-Mods can also search by email
		if ( current_user_can( 'keep_gate' ) || bbp_allow_super_mods() ) {

// Add user_email to searchable columns
			array_push( $search, 'user_email' );

// Unstrict to also allow some email characters
			$strict = false;

// Strict sanitizing if not Keymaster or Super-Mod
		} else {
			$strict = true;
		}

// Sanitize the request value (possibly not strictly)
		$suggest = sanitize_user( $request, $strict );

// Bail if searching for invalid user string
		if ( empty( $suggest ) ) {
			wp_die();
		}

// These single characters should not trigger a user query
		$disallowed_single_chars = array( '@', '.', '_', '-', '+', '!', '#', '$', '%', '&', '\\', '*', '+', '/', '=', '?', '^', '`', '{', '|', '}', '~' );

// Bail if request is only for the above single characters
		if ( in_array( $suggest, $disallowed_single_chars, true ) ) {
			wp_die();
		}

// Allow the maximum number of results to be filtered
		$number = (int) apply_filters( 'bbp_suggest_user_count', 10 );

// Query database for users based on above criteria
		$users_query = new WP_User_Query( array(
			'search'         => '*' . bbp_db()->esc_like( $suggest ) . '*',
			'fields'         => $fields,
			'search_columns' => $search,
			'orderby'        => 'ID',
			'number'         => $number,
			'count_total'    => false
		) );

// If we found some users, loop through and output them to the AJAX
		if ( ! empty( $users_query->results ) ) {
			foreach ( (array) $users_query->results as $user ) {
				printf( esc_html__( '%1$s - %2$s', 'bbpress' ), bbp_get_user_id( $user->ID ), bbp_get_user_nicename( $user->ID, array( 'force' => $user->user_nicename ) ) . "\n" );
			}
		}
		die();
	}

/** About *****************************************************************/

/**
	 * Output the shared screen header for about_screen() & credits_screen()
	 *
	 * Contains title, subtitle, and badge area
	 *
	 * @since 2.6.0 bbPress (r6604)
	 */
	private function screen_header() {
		list( $display_version ) = explode( '-', bbp_get_version() ); ?>

<?php
	}

/**
	 * Output the about screen
	 *
	 * @since 2.2.0 bbPress (r4159)
	 *
	 * @todo Host this remotely.
	 */
	public function about_screen() {
		?>

<?php $this->screen_header(); ?>

<h2 class="nav-tab-wrapper">
				<a class="nav-tab nav-tab-active" href="<?php echo esc_url( add_query_arg( array( 'page' => 'bbp-about' ), admin_url( 'index.php' ) ) ); ?>">
					<?php esc_html_e( 'What&#8217;s New', 'bbpress' ); ?>
				</a><a class="nav-tab" href="<?php echo esc_url( add_query_arg( array( 'page' => 'bbp-credits' ), admin_url( 'index.php' ) ) ); ?>">
					<?php esc_html_e( 'Credits', 'bbpress' ); ?>
				</a>
			</h2>

<div class="return-to-dashboard">
				<a href="<?php echo esc_url( add_query_arg( array( 'page' => 'bbpress' ), admin_url( 'options-general.php' ) ) ); ?>"><?php esc_html_e( 'Go to Forum Settings', 'bbpress' ); ?></a>
			</div>

</div>

<?php
	}

/**
	 * Output the credits screen
	 *
	 * @since 2.2.0 bbPress (r4159)
	 *
	 * @todo Host this remotely.
	 */
	public function credits_screen() {
		?>

<?php $this->screen_header(); ?>

<h2 class="nav-tab-wrapper">
				<a href="<?php echo esc_url( add_query_arg( array( 'page' => 'bbp-about' ), admin_url( 'index.php' ) ) ); ?>" class="nav-tab">
					<?php esc_html_e( 'What&#8217;s New', 'bbpress' ); ?>
				</a><a href="<?php echo esc_url( add_query_arg( array( 'page' => 'bbp-credits' ), admin_url( 'index.php' ) ) ); ?>" class="nav-tab nav-tab-active">
					<?php esc_html_e( 'Credits', 'bbpress' ); ?>
				</a>
			</h2>

<h3 class="wp-people-group"><?php esc_html_e( 'Project Leaders', 'bbpress' ); ?></h3>
			<ul class="wp-people-group " id="wp-people-group-project-leaders">
				<li class="wp-person" id="wp-person-matt">
					<a href="https://profiles.wordpress.org/matt" class="web"><img src="http://0.gravatar.com/avatar/767fc9c115a1b989744c755db47feb60?s=120" class="gravatar" alt="" />Matt Mullenweg</a>
					<span class="title"><?php esc_html_e( 'Founding Developer', 'bbpress' ); ?></span>
				</li>
				<li class="wp-person" id="wp-person-johnjamesjacoby">
					<a href="https://profiles.wordpress.org/johnjamesjacoby" class="web"><img src="http://0.gravatar.com/avatar/7a2644fb53ae2f7bfd7143b504af396c?s=120" class="gravatar" alt="" />John James Jacoby</a>
					<span class="title"><?php esc_html_e( 'Lead Developer', 'bbpress' ); ?></span>
				</li>
				<li class="wp-person" id="wp-person-jmdodd">
					<a href="https://profiles.wordpress.org/jmdodd" class="web"><img src="http://0.gravatar.com/avatar/6a7c997edea340616bcc6d0fe03f65dd?s=120" class="gravatar" alt="" />Jennifer M. Dodd</a>
					<span class="title"><?php esc_html_e( 'Feature Virtuoso', 'bbpress' ); ?></span>
				</li>
				<li class="wp-person" id="wp-person-netweb">
					<a href="https://profiles.wordpress.org/netweb" class="web"><img src="http://0.gravatar.com/avatar/97e1620b501da675315ba7cfb740e80f?s=120" class="gravatar" alt="" />Stephen Edgar</a>
					<span class="title"><?php esc_html_e( 'Tool Maven', 'bbpress' ); ?></span>
				</li>
			</ul>

<h3 class="wp-people-group"><?php esc_html_e( 'Contributing Developers', 'bbpress' ); ?></h3>
			<ul class="wp-people-group " id="wp-people-group-contributing-developers">
				<li class="wp-person" id="wp-person-sergeybiryukov">
					<a href="https://profiles.wordpress.org/SergeyBiryukov" class="web"><img src="http://0.gravatar.com/avatar/750b7b0fcd855389264c2b1294d61bd6?s=120" class="gravatar" alt="" />Sergey Biryukov</a>
					<span class="title"><?php esc_html_e( 'Core Developer', 'bbpress' ); ?></span>
				</li>
				<li class="wp-person" id="wp-person-thebrandonallen">
					<a href="https://profiles.wordpress.org/thebrandonallen" class="web"><img src="http://0.gravatar.com/avatar/6d3f77bf3c9ca94c406dea401b566950?s?s=120" class="gravatar" alt="" />Brandon Allen</a>
					<span class="title"><?php esc_html_e( 'Core Developer', 'bbpress' ); ?></span>
				</li>
			</ul>

<h3 class="wp-people-group"><?php esc_html_e( 'Project Emeriti', 'bbpress' ); ?></h3>
			<ul class="wp-people-group " id="wp-people-group-project-emeriti">
				<li class="wp-person" id="wp-person-gautamgupta">
					<a href="https://profiles.wordpress.org/gautamgupta" class="web"><img src="http://0.gravatar.com/avatar/b0810422cbe6e4eead4def5ae7a90b34?s=120" class="gravatar" alt="" />Gautam Gupta</a>
					<span class="title"><?php esc_html_e( 'Feature Developer', 'bbpress' ); ?></span>
				</li>
				<li class="wp-person" id="wp-person-jaredatch">
					<a href="https://profiles.wordpress.org/jaredatch" class="web"><img src="http://0.gravatar.com/avatar/e341eca9e1a85dcae7127044301b4363?s=120" class="gravatar" alt="" />Jared Atchison</a>
					<span class="title"><?php esc_html_e( 'Integration Testing', 'bbpress' ); ?></span>
				</li>
			</ul>

<h3 class="wp-people-group"><?php esc_html_e( 'Contributors to bbPress 2.6', 'bbpress' ); ?></h3>
			<p class="wp-credits-list">
				<a href="https://profiles.wordpress.org/alex-ye">alex-ye</a>,
				<a href="https://profiles.wordpress.org/ankit-k-gupta">ankit-k-gupta</a>,
				<a href="https://profiles.wordpress.org/barryhughes-1">barryhughes-1</a>,
				<a href="https://profiles.wordpress.org/boonebgorges">boonebgorges</a>,
				<a href="https://profiles.wordpress.org/casiepa">casiepa</a>,
				<a href="https://profiles.wordpress.org/cfinke">cfinke</a>,
				<a href="https://profiles.wordpress.org/danielbachhuber">danielbachhuber</a>,
				<a href="https://profiles.wordpress.org/dimitrovadrian">dimitrov.adrian</a>,
				<a href="https://profiles.wordpress.org/DJPaul">DJPaul</a>,
				<a href="https://profiles.wordpress.org/DrPepper75">DrPepper75</a>,
				<a href="https://profiles.wordpress.org/eoigal">eoigal</a>,
				<a href="https://profiles.wordpress.org/ericlewis">ericlewis</a>,
				<a href="https://profiles.wordpress.org/extendwings">extendwings</a>,
				<a href="https://profiles.wordpress.org/Faison">Faison</a>,
				<a href="https://profiles.wordpress.org/gautamgupta">gautamgupta</a>,
				<a href="https://profiles.wordpress.org/glynwintle">glynwintle</a>,
				<a href="https://profiles.wordpress.org/gusrb84">gusrb84</a>,
				<a href="https://profiles.wordpress.org/hellofromTonya">hellofromTonya</a>,
				<a href="https://profiles.wordpress.org/icu0755">icu0755</a>,
				<a href="https://profiles.wordpress.org/imath">imath</a>,
				<a href="https://profiles.wordpress.org/jbrinley">jbrinley</a>,
				<a href="https://profiles.wordpress.org/jdgrimes">jdgrimes</a>,
				<a href="https://profiles.wordpress.org/jmdodd">jmdodd</a>,
				<a href="https://profiles.wordpress.org/joedolson">joedolson</a>,
				<a href="https://profiles.wordpress.org/johnbillion">johnbillion</a>,
				<a href="https://profiles.wordpress.org/johnjamesjacoby">johnjamesjacoby</a>,
				<a href="https://profiles.wordpress.org/jorbin">jorbin</a>,
				<a href="https://profiles.wordpress.org/jreeve">jreeve</a>,
				<a href="https://profiles.wordpress.org/kadamwhite ">kadamwhite</a>,
				<a href="https://profiles.wordpress.org/karlgroves">karlgroves</a>,
				<a href="https://profiles.wordpress.org/mat-lipe">mat-lipe</a>,
				<a href="https://profiles.wordpress.org/mazengamal">mazengamal</a>,
				<a href="https://profiles.wordpress.org/melchoyce">melchoyce</a>,
				<a href="https://profiles.wordpress.org/mercime">mercime</a>,
				<a href="https://profiles.wordpress.org/michaelbeil">michaelbeil</a>,
				<a href="https://profiles.wordpress.org/mikelopez">mikelopez</a>,
				<a href="https://profiles.wordpress.org/mordauk">mordauk</a>,
				<a href="https://profiles.wordpress.org/mspecht">mspecht</a>,
				<a href="https://profiles.wordpress.org/MZAWeb">MZAWeb</a>,
				<a href="https://profiles.wordpress.org/netweb">netweb</a>,
				<a href="https://profiles.wordpress.org/ocean90">ocean90</a>,
				<a href="https://profiles.wordpress.org/offereins">offereins</a>,
				<a href="https://profiles.wordpress.org/pareshradadiya">pareshradadiya</a>,
				<a href="https://profiles.wordpress.org/r-a-y">r-a-y</a>,
				<a href="https://profiles.wordpress.org/ramiy">ramiy</a>,
				<a href="https://profiles.wordpress.org/robin-w">robin-w</a>,
				<a href="https://profiles.wordpress.org/robkk">robkk</a>,
				<a href="https://profiles.wordpress.org/ryelle">ryelle</a>,
				<a href="https://profiles.wordpress.org/satollo">satollo</a>,
				<a href="https://profiles.wordpress.org/SergeyBiryukov">Sergey Biryukov</a>,
				<a href="https://profiles.wordpress.org/SGr33n">SGr33n</a>,
				<a href="https://profiles.wordpress.org/stephdau">stephdau</a>,
				<a href="https://profiles.wordpress.org/tharsheblows">tharsheblows</a>,
				<a href="https://profiles.wordpress.org/thebrandonallen">thebrandonallen</a>,
				<a href="https://profiles.wordpress.org/tobyhawkins">tobyhawkins</a>,
				<a href="https://profiles.wordpress.org/tonyrix">tonyrix</a>,
				<a href="https://profiles.wordpress.org/treyhunner">treyhunner</a>,
				<a href="https://profiles.wordpress.org/tw2113">tw2113</a>,
				<a href="https://profiles.wordpress.org/xknown">xknown</a>
			</p>

</div>

<?php
	}

/** Updaters **************************************************************/

/**
	 * Update all bbPress forums across all sites
	 *
	 * @since 2.1.0 bbPress (r3689)
	 */
	public static function update_screen() {

// Get action
		$action = isset( $_GET['action'] ) ? $_GET['action'] : ''; ?>

<?php

// Taking action
		switch ( $action ) {
			case 'bbp-update' :

// Run the full updater
				bbp_version_updater(); ?>

<?php

break;

case 'show' :
			default : ?>

<?php break;

} ?>

</div><?php
	}

/**
	 * Update all bbPress forums across all sites
	 *
	 * @since 2.1.0 bbPress (r3689)
	 */
	public static function network_update_screen() {
		$bbp_db = bbp_db();

// Get action
		$action = isset( $_GET['action'] ) ? $_GET['action'] : ''; ?>

<?php

// Taking action
		switch ( $action ) {
			case 'bbpress-update' :

// Site counter
				$n = isset( $_GET['n'] ) ? intval( $_GET['n'] ) : 0;

// Get blogs 5 at a time
				$blogs = $bbp_db->get_results( "SELECT * FROM {$bbp_db->blogs} WHERE site_id = '{$bbp_db->siteid}' AND spam = '0' AND deleted = '0' AND archived = '0' ORDER BY registered DESC LIMIT {$n}, 5", ARRAY_A );

// No blogs so all done!
				if ( empty( $blogs ) ) : ?>

<?php

// Still have sites to loop through
				else : ?>

<ul>

<?php foreach ( (array) $blogs as $details ) :

// Get site URLs
							$site_url   = get_site_url( $details['blog_id'] );
							$admin_url  = get_site_url( $details['blog_id'], 'wp-admin.php', 'admin' );
							$remote_url = add_query_arg( array(
								'page'   => 'bbp-update',
								'action' => 'bbp-update'
							), $admin_url ); ?>

<?php

// Get the response of the bbPress update on this site
							$response = wp_remote_get(
								$remote_url,
								array(
									'timeout'     => 30,
									'httpversion' => '1.1'
								)
							);

// Site errored out, no response?
							if ( is_wp_error( $response ) ) {
								wp_die( sprintf( esc_html__( 'Warning! Problem updating %1$s. Your server may not be able to connect to sites running on it. Error message: %2$s', 'bbpress' ), $site_url, '<em>' . $response->get_error_message() . '</em>' ) );
							}

// Switch to the new site
							bbp_switch_to_site( $details[ 'blog_id' ] );

$basename = bbpress()->basename;

// Run the updater on this site
							if ( is_plugin_active_for_network( $basename ) || is_plugin_active( $basename ) ) {
								bbp_version_updater();
							}

// Restore original site
							bbp_restore_current_site();

// Do some actions to allow plugins to do things too
							do_action( 'after_bbpress_upgrade', $response             );
							do_action( 'bbp_upgrade_site',      $details[ 'blog_id' ] );

endforeach; ?>

</ul>

<p>
						<?php esc_html_e( 'If your browser doesn&#8217;t start loading the next page automatically, click this link:', 'bbpress' ); ?>
						<a class="button" href="update-core.php?page=bbpress-update&amp;action=bbpress-update&amp;n=<?php echo ( $n + 5 ); ?>"><?php esc_html_e( 'Next Forums', 'bbpress' ); ?></a>
					</p>
					<script type='text/javascript'>
						
					</script><?php

endif;

break;

case 'show' :
			default : ?>

<?php break;

} ?>

</div><?php
	}
}
endif; // class_exists check