<?php

namespace App\User\UseCases\PromoteUserToAdmin;

use App\Exceptions\BadRequestException;
use App\Exceptions\ForbiddenException;
use App\User\User;
use App\User\UserRepository;
use DomainException;

class PromoteUserToAdmin
{
    public function __construct(
        private UserRepository $userRepo,
    ) {}

    /**
     * @throws BadRequestException
     * @throws ForbiddenException
     * @throws DomainException
     */
    public function execute(PromoteUserToAdminRequest $request): User
    {
        if (! $request->requesterIsAdmin) {
            throw new ForbiddenException(
                'only admins can promote users'
            );
        }
        if ($request->targetUserId <= 0) {
            throw new BadRequestException(
                'targetUserId must be positive'
            );
        }

        $target = $this->userRepo->find($request->targetUserId);
        if ($target === null) {
            throw new DomainException('user not found');
        }

        if ($target->isAdmin()) {
            return $target;
        }

        return $this->userRepo->update(new User(
            id: $target->getId(),
            email: $target->getEmail(),
            displayName: $target->getDisplayName(),
            passwordHash: $target->getPasswordHash(),
            isAdmin: true,
            emailConfirmedAt: $target->getEmailConfirmedAt(),
        ));
    }
}