KT-MyPage/app/Http/Controllers/Web/Auth/LoginController.php

<?php

namespace App\Http\Controllers\Web\Auth;

use App\Http\Controllers\Web\WebController;
use App\Kintone\Models\Customer;
use App\Models\User;
use Exception;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;

class LoginController extends WebController
{

    public function name(): string
    {
        return "ログイン";
    }

    public function description(): string
    {
        return "ログインを行う";
    }


    public function __construct(protected LoginParam $param)
    {
        parent::__construct();
    }

    protected function run(Request $request): JsonResponse
    {
        // 取得したユーザ情報を登録しログインを行う
        $param = $this->param;

        $access = Customer::getAccess();
        $query = Customer::getQuery()->where(Customer::FIELD_EMAIL, $param->email);

        $customer = $access->some($query);

        if ($customer->count() !== 1) {
            return $this->failedResponse();
        }

        $customer = $customer->first();

        $kintoneId = $customer->getRecordId();

        $user = User::whereKintoneId($kintoneId)
            ->first();

        if ($user instanceof User) {
            // すでにユーザー登録されているケース

            //データ同期
            if ($user->email !== $param->email) {
                $user->email = $param->email;
                $user->save();
            }
            if ($user->kintone_customer_code !== $customer->getNumber(Customer::FIELD_CUSTOMER_CODE)) {
                $user->kintone_customer_code = $customer->getNumber(Customer::FIELD_CUSTOMER_CODE);
                $user->save();
            }

            if (Auth::attempt([
                'email' => $param->email,
                'password' => $param->password,
            ])) {
                return $this->successResponse($customer->toArray());
            } else {
                return $this->failedResponse();
            }
        } else {
            return $this->failedResponse();
        }
    }
}