BP_REST_Topics_Endpoint::get_topic_current_user_permissions( int $topic_id )

	public function get_topic_current_user_permissions( $topic_id ) {
		if ( empty( $topic_id ) ) {
			return;
		}

		$topic   = bbp_get_topic( bbp_get_topic_id( (int) $topic_id ) );
		$form_id = bbp_get_topic_forum_id( $topic_id );

		return array(
			'show_replies' => $this->forum_endpoint->can_access_content( $form_id ),
			'edit'         => (
				current_user_can( 'moderate' )
				|| (
					! empty( $topic )
					&& current_user_can( 'edit_topic', $topic->ID )
					&& ! bbp_past_edit_lock( $topic->post_date_gmt )
				)
			),
			'moderate'     => ! empty( $topic ) && current_user_can( 'moderate', $topic_id ),
			'reply'        => ! empty( $topic ) && bbp_current_user_can_publish_replies() && $this->forum_endpoint->can_access_content( $form_id, true ),
			'trash'        => ! empty( $topic ) && current_user_can( 'delete_topic', $topic->ID ),
		);
	}