function bbp_map_topic_tag_meta_caps( $caps, $cap, $user_id, $args ) {

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

		/** Assignment ********************************************************/

		case 'assign_topic_tags' :

			// Get post
			$post_id = ! empty( $args[0] )
				? get_post( $args[0] )->ID
				: 0;

			// 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 assign
			} elseif ( user_can( $user_id, 'moderate', $post_id ) ) {
				$caps = array( 'moderate' );

			// Do not allow if topic tags are disabled
			} elseif ( ! bbp_allow_topic_tags() ) {
				$caps = array( 'do_not_allow' );
			}

			break;

		/** Management ********************************************************/

		case 'manage_topic_tags' :

			// Moderators can always edit
			if ( user_can( $user_id, 'moderate' ) ) {
				$caps = array( 'moderate' );
			}

			break;

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

		case 'edit_topic_tags' :

			// Moderators can always edit
			if ( user_can( $user_id, 'moderate' ) ) {
				$caps = array( 'moderate' );
			}

			break;

		case 'edit_topic_tag' :

			// Get the term
			$_tag = get_term( $args[0], bbp_get_topic_tag_tax_id() );
			if ( ! empty( $_tag ) ) {

				// 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 edit topic tags
				} elseif ( user_can( $user_id, 'moderate', $_tag->term_id ) ) {
					$caps = array( 'spectate' );

				// Fallback to edit_terms.
				} else {
					$taxonomy = get_taxonomy( bbp_get_topic_tag_tax_id() );
					$caps     = array( $taxonomy->cap->edit_terms );
				}
			}

			break;

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

		case 'delete_topic_tags' :

			// Moderators can always edit
			if ( user_can( $user_id, 'moderate' ) ) {
				$caps = array( 'moderate' );
			}

			break;

		case 'delete_topic_tag' :

			// Get the term
			$_tag = get_term( $args[0], bbp_get_topic_tag_tax_id() );
			if ( ! empty( $_tag ) ) {

				// 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 delete topic tags
				} elseif ( user_can( $user_id, 'moderate', $_tag->term_id ) ) {
					$caps = array( 'spectate' );

				// Fallback to delete_terms.
				} else {
					$taxonomy = get_taxonomy( $_tag->post_type );
					$caps     = array( $taxonomy->cap->delete_terms );
				}
			}

			break;

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

		case 'bbp_topic_tags_admin' :

			// Moderators can always edit
			if ( user_can( $user_id, 'moderate' ) ) {
				$caps = array( 'moderate' );
			}

			break;
	}

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