'title' => $title,
            'data' => $data
        );

        $this->update($profile_data);

        return $key;
    }

    public function get($key = '') {
        $profiles = get_option($this->option_key, array());

        if (isset($profiles[$key])) {
            return $profiles[$key];
        }

        return $profiles;
    }

    public function update($profile_data) {
        update_option($this->option_key, $profile_data);
    }

    public function delete($key) {

        if (in_array($key, $this->non_deletable_profiles)) {
            return false;
        }

        //***

        $profile_data = $this->get();
        unset($profile_data[$key]);
        $this->update($profile_data);

        return true;
    }

    public function get_current($data) {
        $profiles = $this->get();
        if (!empty($profiles)) {
            foreach ($profiles as $key => $p) {
                if ($p['data'] === $data AND count($data) === count($p['data'])) {
                    return array('key' => $key, 'title' => $p['title']);
                }
            }
        }

        return array();
    }

    //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    //ajax
    public function load_profile() {

        if (!current_user_can('manage_woocommerce')) {
            die('0');
        }
		
		if (!isset($_REQUEST['tools_panel_nonce']) || !wp_verify_nonce($_REQUEST['tools_panel_nonce'], 'woobe_tools_panel_nonce')) {
            die('0');
        }	
		
        $profile = $this->get(sanitize_text_field($_REQUEST['profile_key']));   

        if (!empty($profile)) {
            if (isset($profile['data']) AND ! empty($profile['data'])) {
                $options = $this->settings->get_options();
                if (isset($options['fields']) AND ! empty($options['fields'])) {

                    //set zero to all
                    foreach ($options['fields'] as $key => $o) {
                        $options['fields'][$key]['show'] = 0;
                    }

                    //collect columns from profile to set them on the top and ordered as they saved
                    $new_columns_fields_structure = array();
                    foreach ($profile['data'] as $cid) {
                        if (isset($options['fields'][$cid])) {
                            $new_columns_fields_structure[$cid] = $options['fields'][$cid];
                            $new_columns_fields_structure[$cid]['show'] = 1;
                        }
                    }

                    //remove columns from options which are in profile
                    foreach ($options['fields'] as $key => $o) {
                        if (isset($new_columns_fields_structure[$key])) {
                            unset($options['fields'][$key]);
                        }
                    }


                    $options['fields'] = array_merge($new_columns_fields_structure, $options['fields']);
                    $this->settings->update_options($options);
                }
            } else {
                echo -1;
            }
        } else {
            echo -1;
        }

        exit;
    }

    //ajax
    public function create_profile() {


        if (!current_user_can('manage_woocommerce')) {
            die('0');
        }
		
		if (!isset($_REQUEST['tools_panel_nonce']) || !wp_verify_nonce($_REQUEST['tools_panel_nonce'], 'woobe_tools_panel_nonce')) {
            die('0');
        }
		
        $profile_title = sanitize_text_field(trim(htmlentities($_REQUEST['profile_title'], ENT_NOQUOTES)));

        if (!empty($profile_title)) {
            $columns = array();           

            foreach ($this->settings->get_fields(false) as $key => $f) {
                if (intval($f['show']) === 1) {
                    $columns[] = $key;
                }
            }

            echo $this->create($columns, $profile_title);
        }

        exit;
    }

    //ajax
    public function delete_profile() {

        if (!current_user_can('manage_woocommerce')) {
            die('0');
        }

		if (!isset($_REQUEST['tools_panel_nonce']) || !wp_verify_nonce($_REQUEST['tools_panel_nonce'], 'woobe_tools_panel_nonce')) {
            die('0');
        }
		
        $this->delete(sanitize_text_field($_REQUEST['profile_key']));

        exit;
    }

    //hook
    public function woobe_print_plugin_options($args) {
        $args['current_profile'] = $this->get_current(array_keys($this->settings->active_fields));
        return $args;
    }

}