handle thumbnail logic

controllers/upload_video.inc.php

@@ -34,3 +34,26 @@ function is_video_file_invalid(array $video): bool
         return true;
     }
 }
+
+// check if thumbnail is not empty and is a valid image
+function is_thumbnail_file_invalid(array $thumbnail): bool
+{
+    $thumbnail_name = $thumbnail['name'];
+    $thumbnail_size = $thumbnail['size'];
+    $thumbnail_error = $thumbnail['error'];
+
+    $thumbnail_ext = explode('.', $thumbnail_name);
+    $thumbnail_actual_ext = strtolower(end($thumbnail_ext));
+
+    $allowed = ['jpg', 'jpeg', 'png'];
+
+    if (in_array($thumbnail_actual_ext, $allowed)) {
+        if ($thumbnail_error === 0 && $thumbnail_size > 0) {
+            return false;
+        } else {
+            return true;
+        }
+    } else {
+        return true;
+    }
+}

includes/upload_video.inc.php

@@ -7,6 +7,8 @@
     $description = $_POST['description'];
     $thumbnail = $_FILES['thumbnail'];
 
+
+
     try {
         require_once "./db_handler.inc.php";
         require_once "../models/upload_video.inc.php";
@@ -24,7 +26,10 @@
         else if (is_video_file_invalid($video)) {
             $errors['invalid_video'] = 'Please upload a valid video in .mp4 format';
         }
-
+        // check if thumbnail array is not empty and is a valid image, if empty, ignore
+        else if (!empty($thumbnail['name']) && is_thumbnail_file_invalid($thumbnail)) {
+            $errors['invalid_thumbnail'] = 'Please upload a valid image in .jpg, .jpeg or .png format';
+        }
         require_once "./config_session.inc.php";
 
         if ($errors) {