WIP

packages/framework/src/Model/Customer/CustomerFacade.php

@@ -198,7 +198,7 @@ public function editByAdmin($userId, CustomerData $customerData)
             $customerData->userData->email,
             $customerData->userData->domainId
         );
-        $user->changeEmail($customerData->userData->email, $userByEmailAndDomain);
+        $this->changeEmail($customerData->userData->email, $userByEmailAndDomain);
 
         $this->em->flush();
 
@@ -243,4 +243,36 @@ public function amendCustomerDataFromOrder(User $user, Order $order)
 
         $this->em->flush();
     }
+
+    /**
+     * @param string $email
+     * @param \Shopsys\FrameworkBundle\Model\Customer\User|null $userByEmail
+     */
+    protected function changeEmail(string $email, ?self $userByEmail)
+    {
+        $email = mb_strtolower($email);
+
+        if ($this !== $userByEmail) {
+            $this->checkDuplicateEmail($email, $userByEmail);
+        }
+
+        $this->email = $email;
+    }
+
+    /**
+     * @param string $email
+     * @param \Shopsys\FrameworkBundle\Model\Customer\User|null $userByEmail
+     */
+    protected function checkDuplicateEmail(string $email, ?User $userByEmail): void
+    {
+        if ($userByEmail === null) {
+            return;
+        }
+
+        $isSameEmail = ($userByEmail->getEmail() === $email);
+        $isSameDomain = ($userByEmail->getDomainId() === $this->do);
+        if ($isSameEmail && $isSameDomain) {
+            throw new \Shopsys\FrameworkBundle\Model\Customer\Exception\DuplicateEmailException($email);
+        }
+    }
 }

packages/framework/src/Model/Customer/User.php

@@ -162,6 +162,14 @@ public function edit(UserData $userData, EncoderFactoryInterface $encoderFactory
         }
     }
 
+    /**
+     * @param string $email
+     */
+    public function setEmail(string $email): void
+    {
+        $this->email = mb_strtolower($email);
+    }
+
     /**
      * @param string $email
      * @param \Shopsys\FrameworkBundle\Model\Customer\User|null $userByEmail