two interfaces

two interfaces.

<?php

declare(strict_types = 1);


class NameAndAge
{
    private int $age;

    private string $name;

    /**
     *
     * @param int $age
     * @param string $name
     */
    public function __construct(int $age, string $name)
    {
        $this->age = $age;
        $this->name = $name;
    }

    /**
     * @return int
     */
    public function getAge(): int
    {
        return $this->age;
    }

    /**
     * @return string
     */
    public function getName(): string
    {
        return $this->name;
    }
}

interface UserDataMapper
{
    public function mapUserData(UserDataDto $userData): array;
}

interface ClientDataMapper
{
    public function mapClientData(ClientDataDto $clientDataDto): array;
}


class UserDataMapper implements UserDataMapper, ClientDataMapper
{
    private function mapNameAndAge(NameAndAge $userData): array
    {
        //whatever processing is not included in the example done here.
    }

    public function mapUserData(UserDataDto $userData): array
    {
        $nameAndAge = new NameAndAge(
            $userData->getName() ?? 'Fred',
            $userData->getAge ?? 0
        );

        return $this->mapNameAndAge($nameAndAge);
    }

    public function mapClientData(ClientDataDto $clientDataDto): array
    {
        $nameAndAge = new NameAndAge(
            $clientDataDto->getName() ?? 'Fred',
            $clientDataDto->getAge ?? 0,
        );

        return $this->mapNameAndAge($nameAndAge);
    }

}


// USAGE OF MAPPER CLASS
class SomeUserController
{
    // dependenc on UserDataMapper

    public function someUserMethod()
    {
        $userDataDto = // get user data from DB and set UserDataDto object
        $mappedUserData = $this->userDataMapper->mapUserData($userDataDto);
    }
}

// I WANT TO DO RESUSE MAPPER CLASS WITH NEW OBJECT
class SomeClientController
{
    // Dependency on ClientDataMapper

    public function someClientMethod()
    {
        $clientDataDto = // get client data from DB and set ClientDataDto object
        $mappedClientData = $this->clientDataMapper->mapClientData($clientDataDto);
    }
}