/**
     * Gets all tags currently applied to the user, also update the list of available tags
     *
     * @access public
     * @return array Tags
     */

    public function get_tags( $contact_id ) {

        if ( ! $this->params ) {
            $this->get_params();
        }

        $request      = 'https://api.hubapi.com/contacts/v1/contact/vid/' . $contact_id . '/profile';
        $response     = wp_remote_get( $request, $this->params );

        if( is_wp_error( $response ) ) {
            return $response;
        }

        $body_json = json_decode( wp_remote_retrieve_body( $response ) );

        $tags = array();

        if( empty( $body_json ) || empty( $body_json->{'list-memberships'} ) ) {
            return $tags;
        }

        foreach( $body_json->{'list-memberships'} as $list ) {

            $tags[] = $list->{'static-list-id'};

        }

        return $tags;
    }

    /**
     * Applies tags to a contact
     *
     * @access public
     * @return bool
     */

    public function apply_tags( $tags, $contact_id ) {

        if ( ! $this->params ) {
            $this->get_params();
        }

        foreach( $tags as $tag ) {

            $params = $this->params;
            $params['body'] = json_encode( array( 'vids' => array( $contact_id ) ) );

            $request      = 'https://api.hubapi.com/contacts/v1/lists/' . $tag . '/add';
            $response     = wp_remote_post( $request, $params );

            if( is_wp_error( $response ) ) {
                return $response;
            }

        }

        return true;

    }

    /**
     * Removes tags from a contact
     *
     * @access public
     * @return bool
     */

    public function remove_tags( $tags, $contact_id ) {

        if ( ! $this->params ) {
            $this->get_params();
        }

        foreach( $tags as $tag ) {

            $params = $this->params;
            $params['body'] = json_encode( array( 'vids' => array( $contact_id ) ) );

            $request      = 'https://api.hubapi.com/contacts/v1/lists/' . $tag . '/remove';
            $response     = wp_remote_post( $request, $params );

            if( is_wp_error( $response ) ) {
                return $response;
            }

        }

        return true;

    }