<?php 


class MdlUser{

    private $con; 

    public function __construct(Connection $con){ 
        $this->con = $con; 
    } 

    public function getUserForConnection(string $username, string $password): ?User{
        if (!empty($username) && !empty($password)){
            $results=[];
            $gate=new UserGateway($this->con);
            $results=$gate->findByNamePassword($username, $password);
            if (!empty($results)){
                $user=new User($results[0]['id'], $results[0]['username'], $results[0]['password']);
                return $user;
            }
        }
        return null;
    }

    public function insert(string $username, string $password): ?User{
        $gate=new UserGateway($this->con);
        $results=$gate->findByName($username);
        if ($results==null){
            $u=new User(0, $username, $password);
            $gate->insert($u);
            $id=$gate->getLastId();
            $u->setId($id[0]['oldId']);
            return $u; 
        }
        return null;
    }

    public function delete(User $user){
        $gate=new UserGateway($this->con);
        $gate->delete($user);
    }

    public function update(User $user, string $username, string $password){
        $user->setUsername($username);
        $user->setPassword($password);
        $gate=new UserGateway($this->con);
        $gate->update($user);
    }


}


?>