<?php

/**

 * Main bbPress Admin Class

 *

 * @package bbPress

 * @subpackage Administration

 */

// Exit if accessed directly

if ( !defined( 'ABSPATH' ) ) exit;

if ( !class_exists( 'BBP_Admin' ) ) :

/**

 * Loads bbPress plugin admin area

 *

 * @package bbPress

 * @subpackage Administration

 * @since 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 = '';

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

	/**

	 * @var bool Minimum capability to access Tools and Settings

	 */

	public $minimum_capability = 'manage_options';

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

	/**

	 * The main bbPress admin loader

	 *

	 * @since bbPress (r2515)

	 *

	 * @uses BBP_Admin::setup_globals() Setup the globals needed

	 * @uses BBP_Admin::includes() Include the required files

	 * @uses BBP_Admin::setup_actions() Setup the hooks and actions

	 */

	public function __construct() {

		$this->setup_globals();

		$this->includes();

		$this->setup_actions();

	}

	/**

	 * Admin globals

	 *

	 * @since 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

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

		$this->styles_url = trailingslashit( $this->admin_url   . 'styles' ); // Admin styles URL

	}

	/**

	 * Include required files

	 *

	 * @since bbPress (r2646)

	 * @access private

	 */

	private function includes() {

		require( $this->admin_dir . 'tools.php'     );

		require( $this->admin_dir . 'converter.php' );

		require( $this->admin_dir . 'settings.php'  );

		require( $this->admin_dir . 'functions.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 bbPress (r2646)

	 * @access private

	 *

	 * @uses add_action() To add various actions

	 * @uses add_filter() To add various filters

	 */

	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 menu item to settings menu

		add_action( 'bbp_admin_head',              array( $this, 'admin_head'                 ) ); // Add some general styling to the admin area

		add_action( 'bbp_admin_notices',           array( $this, 'activation_notice'          ) ); // Add notice if not using a bbPress theme

		add_action( 'bbp_register_admin_style',    array( $this, 'register_admin_style'       ) ); // Add green admin style

		add_action( 'bbp_register_admin_settings', array( $this, 'register_admin_settings'    ) ); // Add settings

		add_action( 'bbp_activation',              array( $this, 'new_install'                ) ); // Add menu item to settings menu

		add_action( 'admin_enqueue_scripts',       array( $this, 'enqueue_scripts'            ) ); // Add enqueued JS and CSS

		add_action( 'wp_dashboard_setup',          array( $this, 'dashboard_widget_right_now' ) ); // Forums 'Right now' Dashboard widget

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

		add_action( 'wp_ajax_bbp_suggest_topic',        array( $this, 'suggest_topic' ) );

		add_action( 'wp_ajax_nopriv_bbp_suggest_topic', array( $this, 'suggest_topic' ) );

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

		// Modify bbPress's 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 );

		// Hide the theme compat package selection

		add_filter( 'bbp_admin_get_settings_sections', array( $this, 'hide_theme_compat_packages' ) );

		/** 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 ) );

	}

	/**

	 * Add the admin menus

	 *

	 * @since bbPress (r2646)

	 *

	 * @uses add_management_page() To add the Recount page in Tools section

	 * @uses add_options_page() To add the Forums settings page in Settings

	 *                           section

	 */

	public function admin_menus() {

		$hooks = array();

		// These are later removed in admin_head

		if ( current_user_can( 'bbp_tools_page' ) ) {

			if ( current_user_can( 'bbp_tools_repair_page' ) ) {

				$hooks[] = add_management_page(

					__( 'Repair Forums', 'bbpress' ),

					__( 'Forum Repair',  'bbpress' ),

					$this->minimum_capability,

					'bbp-repair',

					'bbp_admin_repair'

				);

			}

			if ( current_user_can( 'bbp_tools_import_page' ) ) {

				$hooks[] = add_management_page(

					__( 'Import Forums', 'bbpress' ),

					__( 'Forum Import',  'bbpress' ),

					$this->minimum_capability,

					'bbp-converter',

					'bbp_converter_settings'

				);

			}

			if ( current_user_can( 'bbp_tools_reset_page' ) ) {

				$hooks[] = add_management_page(

					__( 'Reset Forums', 'bbpress' ),

					__( 'Forum Reset',  'bbpress' ),

					$this->minimum_capability,

					'bbp-reset',

					'bbp_admin_reset'

				);

			}

			// Fudge the highlighted subnav item when on a bbPress admin page

			foreach( $hooks as $hook ) {

				add_action( "admin_head-$hook", 'bbp_tools_modify_menu_highlight' );

			}

			// Forums Tools Root

			add_management_page(

				__( 'Forums', 'bbpress' ),

				__( 'Forums', 'bbpress' ),

				$this->minimum_capability,

				'bbp-repair',

				'bbp_admin_repair'

			);

		}

		// Are settings enabled?

		if ( current_user_can( 'bbp_settings_page' ) ) {

			add_options_page(

				__( 'Forums',  'bbpress' ),

				__( 'Forums',  'bbpress' ),

				$this->minimum_capability,

				'bbpress',

				'bbp_admin_settings'

			);

		}

		// These are later removed in admin_head

		if ( current_user_can( 'bbp_about_page' ) ) {

			// About

			add_dashboard_page(

				__( 'Welcome to bbPress',  'bbpress' ),

				__( 'Welcome to bbPress',  'bbpress' ),

				$this->minimum_capability,

				'bbp-about',

				array( $this, 'about_screen' )

			);

			// Credits

			add_dashboard_page(

				__( 'Welcome to bbPress',  'bbpress' ),

				__( 'Welcome to bbPress',  'bbpress' ),

				$this->minimum_capability,

				'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',

			__( 'Update Forums', 'bbpress' ),

			__( 'Update Forums', 'bbpress' ),

			'manage_network',

			'bbp-update',

			array( $this, 'update_screen' )

		);

	}

	/**

	 * Add the network admin menus

	 *

	 * @since bbPress (r3689)

	 * @uses add_submenu_page() To add the Update Forums page in Updates

	 */

	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',

			__( 'Update Forums', 'bbpress' ),

			__( 'Update Forums', 'bbpress' ),

			'manage_network',

			'bbpress-update',

			array( $this, 'network_update_screen' )

		);

	}

	/**

	 * If this is a new installation, create some initial forum content.

	 *

	 * @since bbPress (r3767)

	 * @return type

	 */

	public static function new_install() {

		if ( !bbp_is_install() )

			return;

		bbp_create_initial_content();

	}

	/**

	 * Register the settings

	 *

	 * @since bbPress (r2737)

	 *

	 * @uses add_settings_section() To add our own settings section

	 * @uses add_settings_field() To add various settings fields

	 * @uses register_setting() To register various settings

	 * @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;

		// 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;

			// Add the section

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

			// Loop through fields for this section

			foreach ( (array) $fields as $field_id => $field ) {

				// Add the field

				add_settings_field( $field_id, $field['title'], $field['callback'], $section['page'], $section_id, $field['args'] );

				// Register the setting

				register_setting( $section['page'], $field_id, $field['sanitize_callback'] );

			}

		}

	}

	/**

	 * Maps settings capabilities

	 *

	 * @since bbPress (r4242)

	 *

	 * @param array $caps Capabilities for meta capability

	 * @param string $cap Capability name

	 * @param int $user_id User id

	 * @param mixed $args Arguments

	 * @uses get_post() To get the post

	 * @uses get_post_type_object() To get the post type object

	 * @uses apply_filters() Calls 'bbp_map_meta_caps' with caps, cap, user id and

	 *                        args

	 * @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 ) {

			// BuddyPress

			case 'bbp_settings_buddypress' :

				if ( ( is_plugin_active( 'buddypress/bp-loader.php' ) && defined( 'BP_VERSION' ) ) && is_super_admin() ) {

					$caps = array( bbpress()->admin->minimum_capability );

				} else {

					$caps = array( 'do_not_allow' );

				}

				break;

			// Akismet

			case 'bbp_settings_akismet' :

				if ( ( is_plugin_active( 'akismet/akismet.php' ) && defined( 'AKISMET_VERSION' ) ) && is_super_admin() ) {

					$caps = array( bbpress()->admin->minimum_capability );

				} else {

					$caps = array( 'do_not_allow' );

				}

				break;

			// bbPress

			case 'bbp_about_page'            : // About and Credits

			case 'bbp_tools_page'            : // Tools Page

			case 'bbp_tools_repair_page'     : // Tools - Repair Page

			case 'bbp_tools_import_page'     : // Tools - Import Page

			case 'bbp_tools_reset_page'      : // Tools - Reset Page

			case 'bbp_settings_page'         : // Settings Page

			case 'bbp_settings_main'         : // Settings - General

			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_per_page'     : // Settings - Single slugs

			case 'bbp_settings_per_page_rss' : // Settings - Single slugs

				$caps = array( bbpress()->admin->minimum_capability );

				break;

		}

		return apply_filters( 'bbp_map_settings_meta_caps', $caps, $cap, $user_id, $args );

	}

	/**

	 * Register the importers

	 *

	 * @since bbPress (r2737)

	 *

	 * @uses apply_filters() Calls 'bbp_importer_path' filter to allow plugins

	 *                        to customize the importer script locations.

	 */

	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 );

			}

		}

	}

	/**

	 * Admin area activation notice

	 *

	 * Shows a nag message in admin area about the theme not supporting bbPress