Added methods to control the name of attached file (#2)

src/Message.php

@@ -12,6 +12,7 @@ class Message implements ArrayableInterface
     private ?string $username = null;
     private bool $tts = false;
     private ?string $file = null;
+    private ?string $filename = null;
 
     private SplObjectStorage $embeds;
 
@@ -80,6 +81,18 @@ public function setFile(?string $file): self
         return $this;
     }
 
+    public function getFilename(): ?string
+    {
+        return $this->filename;
+    }
+
+    public function setFilename(?string $filename): self
+    {
+        $this->filename = $filename;
+
+        return $this;
+    }
+
     public function getEmbeds(): SplObjectStorage
     {
         return $this->embeds;
@@ -133,6 +146,7 @@ public function toArray(): array
 
         if ($this->file !== null) {
             $data['file'] = $this->file;
+            $data['filename'] = $this->filename ?? basename($this->file);
         }
 
         return $data;

src/Webhook.php

@@ -34,11 +34,13 @@ public function send(Message $message): int
         try {
             if (isset($data['file'])) {
                 $file = $data['file'];
-                unset($data['file']);
+                $filename = $data['filename'];
+
+                unset($data['file'], $data['filename']);
 
                 $options[CURLOPT_HTTPHEADER] = ['Content-type: multipart/form-data'];
                 $options[CURLOPT_POSTFIELDS] = [
-                    'file' => new CURLFile($file, '', basename($file)),
+                    'file' => new CURLFile($file, '', $filename),
                     'payload_json' => json_encode($data, JSON_THROW_ON_ERROR),
                 ];
             } else {