invoiceninja/app/Services/Import/Quickbooks/Auth.php

<?php
namespace App\Services\Import\Quickbooks;

use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Cache;
use App\Services\Import\Quickbooks\Repositories\CompanyTokensRepository;
use App\Services\Import\QuickBooks\Contracts\SDKInterface as QuickbooksInterface;

final class Auth
{    
    private QuickbooksInterface $sdk;

    public function __construct(QuickbooksInterface $quickbooks) {
        $this->sdk = $quickbooks;
    }

    public function accessToken(string $code, string $realm ) : array
    {
       // TODO: Get or put token in Cache or DB?
        return $this->sdk->accessToken($code, $realm);
    }

    public function refreshToken() : array
    {
        // TODO: Get or put token in Cache or DB?
        return  $this->sdk->refreshToken();
    }

    public function getAuthorizationUrl(): string 
    {
        return $this->sdk->getAuthorizationUrl();
    }

    public function getState() : string
    {
        return $this->sdk->getState();
    }

    public function saveTokens($key, $tokens)
    {
        $token_store = new CompanyTokensRepository($key);
        $token_store->save($tokens); 
    }

    public function getAccessToken() : array
    {
        $token_store = new CompanyTokensRepository();
        $tokens = $token_store->get(); 
        if(empty($tokens)) {
            $token = $this->sdk->getAccessToken();
            $access_token = $token->getAccessToken();
            $realm = $token->getRealmID();
            $refresh_token = $token->getRefreshToken();
            $access_token_expires = $token->getAccessTokenExpiresAt();
            $refresh_token_expires = $token->getRefreshTokenExpiresAt();     
            $tokens = compact('access_token', 'refresh_token','access_token_expires', 'refresh_token_expires','realm');
        }
        
        return $tokens;
    }

    public function getRefreshToken() : array
    {
        return  $this->getAccessToken();
    }
}