Rate limiting (#2)

* Rate limiting

* Make stan happy

* Throw original exception if cannot be json decoded

* Remove unnecessary count check on errors

* Clean up code

---------

Co-authored-by: Morgan Arnel <morgan@synergitech.co.uk>

Author: williamrenfrew

src/Services/SalesforceService.php

@@ -4,6 +4,7 @@
 
 use Exception;
 use Omniphx\Forrest\Providers\Laravel\Facades\Forrest;
+use Omniphx\Forrest\Providers\Laravel\LaravelCache;
 use SynergiTech\Salesforce\Exceptions\AuthenticationFailedException;
 
 class SalesforceService
@@ -14,8 +15,13 @@ public static function table(string $tableName): TableService
         return new TableService($tableName);
     }
 
-    protected static function authenticate(): void
+    protected static function authenticate(bool $force = false): void
     {
+        /** @var LaravelCache $cache */
+        $cache = app(LaravelCache::class);
+        if (!$force && $cache->has('token')) {
+            return;
+        }
         try {
             Forrest::authenticate();
         } catch (Exception $ex) {

src/Services/TableService.php

@@ -213,6 +213,10 @@ protected function decodeError(SalesforceException $ex): stdClass
             throw new JsonParseErrorException('Error message received was not valid json. Message: ' . $message);
         }
 
+        if (!$errors) {
+            throw $ex;
+        }
+
         /** @var stdClass{errorCode:string, message:string} $error */
         return $errors[0];
     }