add region setting

Author: josiasmontag

README.md

@@ -204,6 +204,22 @@ $url = $cloudConvert->signedUrlBuilder()->createFromJob($signedUrlBase, $signing
 ```
 
 
+
+Setting a Region
+-----------------
+
+By default, the region in your [account settings](https://cloudconvert.com/dashboard/region) is used. Alternatively, you can set a fixed region:
+
+```php
+// Pass the region to the constructor
+$cloudconvert = new CloudConvert([
+    'api_key' => 'API_KEY',
+    'sandbox' => false,
+    'region'  => 'us-east'
+]);
+```
+
+
 Unit Tests
 -----------------
 

src/CloudConvert.php

@@ -59,6 +59,9 @@ public function configureOptions(OptionsResolver $resolver): void
         $resolver->setDefined('http_client');
         $resolver->setAllowedTypes('http_client', [ClientInterface::class]);
 
+        $resolver->setDefined('region');
+        $resolver->setAllowedTypes('region', 'string');
+
     }
 
 

src/Transport/HttpTransport.php

@@ -65,15 +65,21 @@ protected function createHttpClientInstance(): PluginClient
      */
     public function getBaseUri(): string
     {
-        return $this->options['sandbox'] ? 'https://api.sandbox.cloudconvert.com/v2' : 'https://api.cloudconvert.com/v2';
+        if ($this->options['sandbox']) {
+            return 'https://api.sandbox.cloudconvert.com/v2';
+        }
+        return isset($this->options['region']) ? 'https://' . $this->options['region'] . '.api.cloudconvert.com/v2' : 'https://api.cloudconvert.com/v2';
     }
 
     /**
      * @return string
      */
     public function getSyncBaseUri(): string
     {
-        return $this->options['sandbox'] ? 'https://sync.api.sandbox.cloudconvert.com/v2' : 'https://sync.api.cloudconvert.com/v2';
+        if ($this->options['sandbox']) {
+            return 'https://sync.api.sandbox.cloudconvert.com/v2';
+        }
+        return isset($this->options['region']) ? 'https://' . $this->options['region'] . '.sync.api.cloudconvert.com/v2' : 'https://sync.api.cloudconvert.com/v2';
     }
 
     /**