maps two page fields POC

MapPageField.module

<?php

class MapPageField extends WireData implements Module{

    public static function getModuleInfo(){
        return array(
         'title' => 'MapPageField',
         'version' => 100,
         'singular' => true,
         'autoload' => true
         );
    }
    // autoload module extends WireData
    public function init(){

        $this->set("tpl_team","basic-page");
        $this->set("users_select","users_select");
        $this->set("tpl_user","user");
        $this->set("teams_select","teams_select");


        $this->pages->addHookAfter("save",$this,"hookPageSave");
    }

    public function hookPageSave(HookEvent $event){

        // get current page saved
        $page = $event->argumentsByName("page");

        // check if page is saved by this module to prevent recursion
        if($page->skipme) return;

        if($page->template == $this->tpl_user){

            if(count($page->get($this->teams_select))){
                // at least one team selected, iterate all team pages once
                foreach($this->pages->find("template={$this->tpl_team}") as $team){

                    // iterate each selected team in the current user page to map
                    // and add or remove
                    foreach($page->get($this->teams_select) as $s_team) {
                        // if team page is a selected one and user not added, add user (page) to it
                        if($s_team === $team) {
                            if(!$team->get($this->users_select)->has($page)) {
                                $team->get($this->users_select)->add($page);
                                $team->skipme = true;
                                $team->save();
                            }
                        } else {
                            // if it's not in the selected team but found in field, remove page from it
                            if($team->get($this->users_select)->has($page)) {
                                $team->get($this->users_select)->remove($page);
                                $team->skipme = true;
                                $team->save();
                            }

                        }
                    }
                }
            } else {
                // no team selected remove all references on team pages
                $foundteams = $this->pages->find("template=$this->tpl_team,$this->user_select=$page");
                if($foundteams){
                    foreach($foundteams as $team){
                        $team->get($this->users_select)->remove($page);
                        $team->skipme = true;
                        $team->save();
                    }
                }
            }

        }
        // same for team page save
        if($page->template == $this->tpl_team){

            if(count($page->get($this->users_select))){
                // iterate all team pages once
                foreach($this->pages->find("template={$this->tpl_user}") as $user){
                    foreach($page->get($this->users_select) as $s_user) {
                        if($s_user === $user) {
                            if(!$user->get($this->teams_select)->has($page)) {
                                $user->get($this->teams_select)->add($page);
                                $user->skipme = true;
                                $user->save();
                            }
                        } else {
                            if($user->get($this->teams_select)->has($page)) {
                                $user->get($this->teams_select)->remove($page);
                                $user->skipme = true;
                                $user->save();
                            }
                        }
                    }
                }
            } else {
                // no users selected remove all references on users in case any found
                $foundusers = $this->pages->find("template=$this->tpl_user,$this->teams_select=$page");
                if($foundusers){
                    foreach($foundusers as $user){
                        $user->get($this->teams_select)->remove($page);
                        $user->skipme = true;
                        $user->save();
                    }
                }
            }
        }
    }
}