<?php

/**

 * bbPress Forum Capabilites

 *

 * Used to map forum capabilities to WordPress's existing capabilities.

 *

 * @package bbPress

 * @subpackage Capabilities

 */

/**

 * Return forum capabilities

 *

 * @since bbPress (r2593)

 *

 * @uses apply_filters() Calls 'bbp_get_forum_caps' with the capabilities

 * @return array Forum capabilities

 */

function bbp_get_forum_caps() {

	return apply_filters( 'bbp_get_forum_caps', array (

		'edit_posts'          => 'edit_forums',

		'edit_others_posts'   => 'edit_others_forums',

		'publish_posts'       => 'publish_forums',

		'read_private_posts'  => 'read_private_forums',

		'read_hidden_posts'   => 'read_hidden_forums',

		'delete_posts'        => 'delete_forums',

		'delete_others_posts' => 'delete_others_forums'

	) );

}

/**

 * Maps forum 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() Filter capability map results

 * @return array Actual capabilities for meta capability

 */

function bbp_map_forum_meta_caps( $caps = array(), $cap = '', $user_id = 0, $args = array() ) {

	// What capability is being checked?

	switch ( $cap ) {

		/** Reading ***********************************************************/

		case 'read_private_forums' :

		case 'read_hidden_forums'  :

			// Moderators can always read private/hidden forums

			if ( user_can( $user_id, 'moderate' ) ) {

				$caps = array( 'moderate' );

			}

			break;

		case 'read_forum' :

			// User cannot spectate

			if ( ! user_can( $user_id, 'spectate' ) ) {

				$caps = array( 'do_not_allow' );

			// Do some post ID based logic

			} else {

				// Get the post

				$_post = get_post( $args[0] );

				if ( !empty( $_post ) ) {

					// Get caps for post type object

					$post_type = get_post_type_object( $_post->post_type );

					// Post is public

					if ( bbp_get_public_status_id() == $_post->post_status ) {

						$caps = array( 'spectate' );

					// User is author so allow read

					} elseif ( (int) $user_id == (int) $_post->post_author ) {

						$caps = array( 'spectate' );

					// Unknown so map to private posts

					} else {

						$caps = array( $post_type->cap->read_private_posts );

					}

				}

			}

			break;

		/** Publishing ********************************************************/

		case 'publish_forums'  :

			// Moderators can always edit

			if ( user_can( $user_id, 'moderate' ) ) {

				$caps = array( 'moderate' );

			}

			break;

		/** Editing ***********************************************************/

		// Used primarily in wp-admin

		case 'edit_forums'         :

		case 'edit_others_forums'  :

			// Moderators can always edit

			if ( user_can( $user_id, 'moderate' ) ) {

				$caps = array( 'moderate' );

			}

			break;

		// Used everywhere

		case 'edit_forum' :

			// Get the post

			$_post = get_post( $args[0] );

			if ( !empty( $_post ) ) {

				// Get caps for post type object

				$post_type = get_post_type_object( $_post->post_type );

				$caps      = array();

				// Add 'do_not_allow' cap if user is spam or deleted

				if ( bbp_is_user_inactive( $user_id ) ) {

					$caps[] = 'do_not_allow';

				// User is author so allow edit

				} elseif ( (int) $user_id == (int) $_post->post_author ) {

					$caps[] = $post_type->cap->edit_posts;

				// Unknown, so map to edit_others_posts

				} else {

					$caps[] = $post_type->cap->edit_others_posts;

				}

			}

			break;

		/** Deleting **********************************************************/

		// Allow forum authors to delete forums (for BuddyPress groups, etc)

		case 'delete_forum' :

			// Get the post

			$_post = get_post( $args[0] );

			if ( !empty( $_post ) ) {

				// Get caps for post type object

				$post_type = get_post_type_object( $_post->post_type );

				$caps      = array();

				// Add 'do_not_allow' cap if user is spam or deleted

				if ( bbp_is_user_inactive( $user_id ) ) {

					$caps[] = 'do_not_allow';

				// User is author so allow to delete

				} elseif ( (int) $user_id == (int) $_post->post_author ) {

					$caps[] = $post_type->cap->delete_posts;

				// Unknown so map to delete_others_posts

				} else {

					$caps[] = $post_type->cap->delete_others_posts;

				}

			}

			break;

		/** Admin *************************************************************/

		case 'bbp_forums_admin' :

			$caps = array( 'manage_options' );

			break;

	}

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

}