[Feature] Improved QuickBooks integration

readme.md

@@ -45,8 +45,38 @@ QB_BASE_URL=
 
 ### Connect QuickBooks account
 
-Go to `{yourdomain}/quickbooks/connect` to 
-connect your QuickBooks account with your application.
+To connect your application with your QuickBooks company you can use `QuickbooksConnect` helper.
+Helper has two methods:
+* `getAuthorizationUrl` -> Returns redirect URL and puts `quickbooks_auth` cookie into Laravel cookie queue. 
+Cookie is valid for 30 minutes.
+* `processHook` -> Validates `quickbooks_auth` cookie and sets realm id, access token and refresh token.
+
+Usage example:
+
+```php
+namespace App\Http\Controllers;
+
+use LifeOnScreen\LaravelQuickBooks\QuickbooksConnect;
+use Cookie;
+
+class QuickBooksController extends Controller
+{
+    public function connect()
+    {
+        return redirect(QuickbooksConnect::getAuthorizationUrl())
+            ->withCookies(Cookie::getQueuedCookies());
+    }
+
+    public function refreshTokens()
+    {
+        if (QuickbooksConnect::processHook()) {
+            return 'Tokens successfully refreshed.';
+        }
+
+        return 'There were some problems refreshing tokens.';
+    }
+}
+```
 
 ### Sync Eloquent model to QuickBooks
 

src/LaravelQuickBooksServiceProvider.php

@@ -13,9 +13,6 @@ class LaravelQuickBooksServiceProvider extends ServiceProvider
      */
     public function boot()
     {
-        $this->loadRoutesFrom(__DIR__ . '/Routes/routes.php');
-        $this->loadViewsFrom(__DIR__ . '/path/to/views', 'courier');
-
         // Publishing is only necessary when using the CLI.
         if ($this->app->runningInConsole()) {
 

src/QuickBooksEntity.php

@@ -30,16 +30,6 @@ abstract class QuickBooksEntity extends Model implements QuickBookable
      */
     protected $quickBooksConnection;
 
-    /**
-     * QuickBooksEntity constructor.
-     * @param array $attributes
-     */
-    public function __construct(array $attributes = [])
-    {
-        $this->quickBooksConnection = App::make(QuickBooksConnection::class);
-        parent::__construct($attributes);
-    }
-
     abstract protected function getQuickBooksArray(): array;
 
     /**
@@ -140,6 +130,7 @@ protected function updateToQuickBooks(array $updateArray): bool
      */
     public function syncToQuickbooks(): bool
     {
+        $this->quickBooksConnection = App::make(QuickBooksConnection::class);
         $syncArray = $this->getQuickBooksArray();
         if (empty($this->quickbooks_id)) {
             return $this->insertToQuickBooks($syncArray);

src/QuickBooksResources.php

@@ -2,7 +2,7 @@
 
 namespace LifeOnScreen\LaravelQuickBooks;
 
-use QuickBooksOnline\API\Facades AS QuickBooksFacades;
+use QuickBooksOnline\API\Facades as QuickBooksFacades;
 
 /**
  * Class QuickBooksResources

src/QuickbooksConnect.php

@@ -2,66 +2,89 @@
 
 namespace LifeOnScreen\LaravelQuickBooks;
 
+use Carbon\Carbon;
+use Cookie;
 use Exception;
 use QuickBooksOnline\API\DataService\DataService;
+use Request;
 
 /**
  * Class Init
  * @package LifeOnScreen\LaravelQuickBooks
  */
 class QuickbooksConnect
 {
-    /**
-     * @var DataService
-     */
-    private $dataService;
 
     /**
-     * Init constructor.
+     * @return string
      * @throws \QuickBooksOnline\API\Exception\SdkException
      */
-    public function __construct()
+    public static function getAuthorizationUrl(): string
     {
-        $this->dataService = DataService::Configure([
-            'auth_mode'    => config('quickbooks.data-service.auth-mode'),
-            'ClientID'     => config('quickbooks.data-service.client-id'),
-            'ClientSecret' => config('quickbooks.data-service.client-secret'),
-            'RedirectURI'  => config('quickbooks.data-service.redirect-uri'),
-            'scope'        => config('quickbooks.data-service.scope'),
-            'baseUrl'      => config('quickbooks.data-service.base-url')
-        ]);
-    }
+        $cookieValue = str_random(32);
+        $validUntil = Carbon::now()->addMinutes(30)->timestamp;
+        Cookie::queue(Cookie::make('quickbooks_auth', $cookieValue, 30));
+        option(['qb-auth' => "{$cookieValue}|{$validUntil}"]);
 
-    /**
-     * @throws \QuickBooksOnline\API\Exception\SdkException
-     */
-    public function getAuthorizationUrl()
-    {
-        $OAuth2LoginHelper = $this->dataService->getOAuth2LoginHelper();
-
-        return $OAuth2LoginHelper->getAuthorizationCodeURL();
+        return self::getDataService()->getOAuth2LoginHelper()->getAuthorizationCodeURL();
     }
 
     /**
-     * @param $requestCode
-     * @param $realmID
+     * Set realm id, access token and refresh token.
      * @return bool
      */
-    public function processHook(string $realmID, string $requestCode): bool
+    public static function processHook(): bool
     {
+        $realmID = Request::get('realmId');
+        $requestCode = Request::get('code');
+        if (empty($realmID) || empty($requestCode) || !self::cookieIsValid()) {
+            return false;
+        }
+
         try {
-            $OAuth2LoginHelper = $this->dataService->getOAuth2LoginHelper();
+
+            $OAuth2LoginHelper = self::getDataService()->getOAuth2LoginHelper();
             $accessTokenObj = $OAuth2LoginHelper->exchangeAuthorizationCodeForToken($requestCode, $realmID);
 
             $accessTokenValue = $accessTokenObj->getAccessToken();
             $refreshTokenValue = $accessTokenObj->getRefreshToken();
             option(['qb-realm-id' => $realmID]);
             option(['qb-access-token' => $accessTokenValue]);
             option(['qb-refresh-token' => $refreshTokenValue]);
+
             return true;
         } catch (Exception $e) {
             return false;
         }
+    }
+
+    /**
+     * Get QuickBooksOnline\API\DataService\DataService object.
+     * @throws \QuickBooksOnline\API\Exception\SdkException
+     */
+    protected static function getDataService(): DataService
+    {
+        return DataService::Configure([
+            'auth_mode'    => config('quickbooks.data-service.auth-mode'),
+            'ClientID'     => config('quickbooks.data-service.client-id'),
+            'ClientSecret' => config('quickbooks.data-service.client-secret'),
+            'RedirectURI'  => config('quickbooks.data-service.redirect-uri'),
+            'scope'        => config('quickbooks.data-service.scope'),
+            'baseUrl'      => config('quickbooks.data-service.base-url')
+        ]);
+    }
+
+    /**
+     * Checks if the cookie is valid.
+     * @return bool
+     */
+    protected static function cookieIsValid(): bool
+    {
+        $validCookie = explode('|', option('qb-auth'));
+        if ($validCookie[0] === Cookie::get('quickbooks_auth') && (int)$validCookie[1] > time()) {
+            return true;
+        }
 
+        return false;
     }
 }