<?php

namespace Modules\Core\Privacy\DTOs;

use Illuminate\Contracts\Auth\Authenticatable;
use Lunar\Base\LunarUser;

/**
 * Identifies "the person" for a User-scoped data-subject request — erasing/
 * exporting one individual's own identity (login, name, email) wherever it
 * appears, regardless of how many Customer (business) accounts they're linked to.
 * Deliberately carries no customerId: a provider that needs to know which
 * Customer accounts this User is linked to (e.g. to detach them, or to find data
 * keyed by a shared email) looks that up itself, rather than this value object
 * assuming one fixed Customer — the whole point is that one User can belong to
 * many Customer accounts (B2B multi-seat access) and erasing the User must not
 * assume or privilege any single one of them.
 */
class UserSubject
{
    public function __construct(
        public readonly int $userId,
        public readonly ?string $email = null,
    ) {}

    public static function forUser(Authenticatable&LunarUser $user): self
    {
        return new self(userId: $user->id, email: $user->email);
    }
}