From 26e692563b9908427bed9e2be5f5e4e4f120299b Mon Sep 17 00:00:00 2001
From: Yuri Kuznetsov <yurikuzn@users.noreply.github.com>
Date: Wed, 5 Oct 2022 14:42:54 +0300
Subject: [PATCH] username validator

---
 .../FieldValidators/User/UserName/Valid.php   | 79 +++++++++++++++++++
 .../Resources/metadata/entityDefs/User.json   |  5 +-
 2 files changed, 83 insertions(+), 1 deletion(-)
 create mode 100644 application/Espo/Classes/FieldValidators/User/UserName/Valid.php

diff --git a/application/Espo/Classes/FieldValidators/User/UserName/Valid.php b/application/Espo/Classes/FieldValidators/User/UserName/Valid.php
new file mode 100644
index 0000000000..ac036a6ccf
--- /dev/null
+++ b/application/Espo/Classes/FieldValidators/User/UserName/Valid.php
@@ -0,0 +1,79 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM - Open Source CRM application.
+ * Copyright (C) 2014-2022 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * EspoCRM is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EspoCRM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EspoCRM. If not, see http://www.gnu.org/licenses/.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Classes\FieldValidators\User\UserName;
+
+use Espo\Core\FieldValidation\Validator;
+use Espo\Core\FieldValidation\Validator\Data;
+use Espo\Core\FieldValidation\Validator\Failure;
+use Espo\Core\Utils\Config;
+use Espo\Entities\User;
+use Espo\ORM\Entity;
+use RuntimeException;
+
+/**
+ * @implements Validator<User>
+ */
+class Valid implements Validator
+{
+    private Config $config;
+
+    public function __construct(Config $config) {
+        $this->config = $config;
+    }
+
+    /**
+     * @param User $entity
+     */
+    public function validate(Entity $entity, string $field, Data $data): ?Failure
+    {
+        $value = $entity->getUserName();
+
+        if ($value === null) {
+            return null;
+        }
+
+        /** @var ?string $regExp */
+        $regExp = $this->config->get('userNameRegularExpression');
+
+        if (!$regExp) {
+            throw new RuntimeException("No `userNameRegularExpression` in config.");
+        }
+
+        if (strpos($value, ' ') !== false) {
+            return Failure::create();
+        }
+
+        if (preg_replace("/{$regExp}/", '_', $value) !== $value) {
+            return Failure::create();
+        }
+
+        return null;
+    }
+}
diff --git a/application/Espo/Resources/metadata/entityDefs/User.json b/application/Espo/Resources/metadata/entityDefs/User.json
index f03cc236bd..f4f147b793 100644
--- a/application/Espo/Resources/metadata/entityDefs/User.json
+++ b/application/Espo/Resources/metadata/entityDefs/User.json
@@ -11,7 +11,10 @@
                 "tooltipText",
                 "inlineEditDisabled"
             ],
-            "index": true
+            "index": true,
+            "validatorClassNameList": [
+                "Espo\\Classes\\FieldValidators\\User\\UserName\\Valid"
+            ]
         },
         "name": {
             "type": "personName",