[4.x] Fix inputfile usages

src/Telegram/Endpoints/CustomEndpoints.php

@@ -495,7 +495,7 @@ public function sendChunkedVoice(
 
     protected function sendChunkedMedia(
         string $endpoint,
-        mixed $media,
+        InputFile|string $media,
         string $param,
         array $opt = [],
         $clientOpt = []

src/Telegram/Types/Input/InputMedia.php

@@ -20,18 +20,4 @@ abstract class InputMedia extends BaseType
      * Type of the result
      */
     public InputMediaType $type;
-
-    /**
-     * File to send. Pass a file_id to send a file that exists on the Telegram servers (recommended),
-     * pass an HTTP URL for Telegram to get a file from the Internet, or pass “attach://<file_attach_name>”
-     * to upload a new one using multipart/form-data under <file_attach_name> name.
-     * @see https://core.telegram.org/bots/api#sending-files More info on Sending Files
-     * @var string|resource $media
-     */
-    public mixed $media;
-
-    /**
-     * Optional. Caption of the photo to be sent, 0-1024 characters after entities parsing
-     */
-    public ?string $caption = null;
 }

src/Telegram/Types/Internal/InputFile.php

@@ -19,33 +19,38 @@ class InputFile
     protected ?string $filename;
 
     /**
-     * @param  mixed  $resource
-     * @param  string|null  $filename
+     * @param resource|string $resource Resource or path to file
+     * @param string|null $filename Filename
      */
-    public function __construct($resource, ?string $filename = null)
+    public function __construct(mixed $resource, ?string $filename = null)
     {
         $this->filename = $filename;
         if (is_resource($resource)) {
             $this->resource = $resource;
         } elseif (is_string($resource) && file_exists($resource)) {
-            $this->resource = fopen($resource, 'rb+');
+            $res = fopen($resource, 'rb+');
+            if ($res === false) {
+                throw new \InvalidArgumentException('Invalid resource specified.');
+            }
+
+            $this->resource = $res;
         } else {
             throw new \InvalidArgumentException('Invalid resource specified.');
         }
     }
 
     /**
-     * @param  resource  $resource
-     * @param  string|null  $filename
+     * @param resource|string $resource Resource or path to file
+     * @param string|null $filename Filename
      * @return InputFile
      */
-    public static function make($resource, ?string $filename = null): InputFile
+    public static function make(mixed $resource, ?string $filename = null): InputFile
     {
         return new self($resource, $filename);
     }
 
     /**
-     * @param  string|null  $filename
+     * @param string|null $filename
      * @return InputFile
      */
     public function filename(?string $filename): InputFile
@@ -65,7 +70,7 @@ public function getResource()
     /**
      * @return string
      */
-    public function getFilename()
+    public function getFilename(): string
     {
         $metadata = stream_get_meta_data($this->resource);