Add sales invoice attachments

src/Picqer/Financials/Moneybird/Connection.php

@@ -245,6 +245,34 @@ public function delete($url)
         }
     }
 
+    /**
+     * @param string $method
+     * @param string $url
+     * @param array $options
+     */
+    public function request($method, $url, $options)
+    {
+        $headers = [];
+
+        // If access token is not set or token has expired, acquire new token
+        if (empty($this->accessToken)) {
+            $this->acquireAccessToken();
+        }
+
+        // If we have a token, sign the request
+        if (!empty($this->accessToken)) {
+            $headers['Authorization'] = 'Bearer ' . $this->accessToken;
+        }
+
+        $options['headers'] = $headers;
+
+        try {
+            $this->client()->request($method, $this->formatUrl($url, 'post'), $options);
+        } catch (Exception $e) {
+            $this->parseExceptionForErrorMessages($e);
+        }
+    }
+
     /**
      * @return string
      */
@@ -482,6 +510,5 @@ public function setScopes($scopes)
     {
         $this->scopes = $scopes;
     }
-
 }
 

src/Picqer/Financials/Moneybird/Entities/SalesInvoice.php

@@ -116,7 +116,7 @@ public function sendInvoice($deliveryMethod = 'Email')
                 'delivery_method' => $deliveryMethod
             ]
         ]));
-	    
+
 	return $this;
     }
 
@@ -153,7 +153,7 @@ public function registerPayment(SalesInvoicePayment $salesInvoicePayment)
         $this->connection()->patch($this->endpoint . '/' . $this->id . '/register_payment',
             $salesInvoicePayment->jsonWithNamespace()
         );
-	    
+
 	return $this;
     }
 
@@ -169,7 +169,7 @@ public function addNote(Note $note)
         $this->connection()->post($this->endpoint . '/' . $this->id . '/notes',
             $note->jsonWithNamespace()
         );
-	    
+
 	return $this;
     }
 
@@ -186,4 +186,19 @@ public function duplicateToCreditInvoice()
 
 		return $this->makeFromResponse($response);
 	}
+
+    /**
+     * @param string $file
+     */
+    public function addAttachment($file)
+    {
+        $this->connection()->request('post', $this->endpoint . '/' . $this->id . '/attachments', [
+            'multipart' => [
+                [
+                    'name' => 'file',
+                    'contents' => fopen($file, 'r'),
+                ],
+            ]
+        ]);
+    }
 }