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 {

				// Bail if no post ID
				if ( empty( $args[0] ) ) {
					break;
				}

				// 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' );

					// Moderators can always read forum content
					} elseif ( user_can( $user_id, 'moderate', $_post->ID ) ) {
						$caps = array( 'spectate' );

					// Private
					} elseif ( bbp_get_hidden_status_id() === $_post->post_status ) {
						$caps = array( $post_type->cap->read_hidden_posts );

					// Hidden
					} elseif ( bbp_get_private_status_id() === $_post->post_status ) {
						$caps = array( $post_type->cap->read_private_posts );

					// Unknown, so map to private
					} 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 ( bbp_is_user_keymaster( $user_id ) ) {
				$caps = array( 'spectate' );

			// Otherwise, block
			} else {
				$caps = array( 'do_not_allow' );
			}

			break;

		// Used everywhere
		case 'edit_forum' :

			// Bail if no post ID
			if ( empty( $args[0] ) ) {
				break;
			}

			// 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 );

				// Add 'do_not_allow' cap if user is spam or deleted
				if ( bbp_is_user_inactive( $user_id ) ) {
					$caps = array( 'do_not_allow' );

				// Moderators can always read forum content
				} elseif ( user_can( $user_id, 'moderate', $_post->ID ) ) {
					$caps = array( 'spectate' );

				// User is author so allow edit if not in admin
				} elseif ( ! is_admin() && ( (int) $user_id === (int) $_post->post_author ) ) {
					$caps = array( $post_type->cap->edit_posts );

				// Unknown, so map to edit_others_posts
				} else {
					$caps = array( $post_type->cap->edit_others_posts );
				}
			}

			break;

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

		// Allow forum authors to delete forums (for BuddyPress groups, etc)
		case 'delete_forum' :

			// Bail if no post ID
			if ( empty( $args[0] ) ) {
				break;
			}

			// 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 );

				// Add 'do_not_allow' cap if user is spam or deleted
				if ( bbp_is_user_inactive( $user_id ) ) {
					$caps = array( 'do_not_allow' );

				// User is author so allow to delete
				} elseif ( (int) $user_id === (int) $_post->post_author ) {
					$caps = array( $post_type->cap->delete_posts );

				// Unknown so map to delete_others_posts
				} else {
					$caps = array( $post_type->cap->delete_others_posts );
				}
			}

			break;

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

		// Forum admin area.
		case 'bbp_forums_admin' :
			$caps = array( 'edit_forums' );
			break;
	}

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