fix: Properly reformat gmails

Author: aawnu

src/Helper/UserDataHelper.php

@@ -13,7 +13,7 @@ class UserDataHelper
     public function addEmail(string $email): int
     {
         // Sanitize & Validate email
-        $email = str_replace(" ", "", $email);
+        $email = str_replace(" ", "", mb_strtolower($email));
         if (!filter_var($email, FILTER_VALIDATE_EMAIL)) return -1; // Invalid email format
 
         // Google Mail Sanitizer
@@ -28,16 +28,15 @@ public function addEmail(string $email): int
                 $x[1] = "gmail.com"; // 
             }
             $x[0] = explode("+", $x[0], 2)[0]; // https://gmail.googleblog.com/2008/03/2-hidden-ways-to-get-more-from-your.html
-            $x[0] = str_replace($x[0], ".", "");
+            $x[0] = str_replace(".", "", $x[0]);
             $email = implode("@", $x);
         }
 
         // Sha256 encode
-        $email = hash("sha256", mb_strtolower($email));
+        $email = hash("sha256", $email);
 
-        // Append email to user
-        array_push($this->sha256_email_address, $email);
-        $this->sha256_email_address = array_unique($this->sha256_email_address);
-        return array_search($email, $this->sha256_email_address, true);
+        // Skip duplicated and append email
+        $this->sha256_email_address = array_filter($this->sha256_email_address, fn ($v) => $v != $email);
+        return array_push($this->sha256_email_address, $email) - 1;
     }
 }